path: root/calendar/gui/e-day-view.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * EDayView - displays the Day & Work-Week views of the calendar.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 * Authors:
 *      Damon Chaplin <damon@ximian.com>
 *      Rodrigo Moya <rodrigo@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-day-view.h"

#include <math.h>
#include <time.h>

#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>

#include "libgnomecanvas/libgnomecanvas.h"

#include "dialogs/delete-comp.h"
#include "dialogs/delete-error.h"
#include "dialogs/send-comp.h"
#include "dialogs/cancel-comp.h"
#include "dialogs/recur-comp.h"
#include "dialogs/goto-dialog.h"

#include "calendar-config.h"
#include "comp-util.h"
#include "e-cal-model-calendar.h"
#include "e-day-view-layout.h"
#include "e-day-view-main-item.h"
#include "e-day-view-time-item.h"
#include "e-day-view-top-item.h"
#include "ea-calendar.h"
#include "itip-utils.h"
#include "misc.h"
#include "print.h"

#define E_DAY_VIEW_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_DAY_VIEW, EDayViewPrivate))

/* The minimum amount of space wanted on each side of the date string. */
#define E_DAY_VIEW_DATE_X_PAD   4

#define E_DAY_VIEW_LARGE_FONT_PTSIZE 18
#define E_DAY_VIEW_SMALL_FONT_PTSIZE 10

/* The offset from the top/bottom of the canvas before auto-scrolling starts.*/
#define E_DAY_VIEW_AUTO_SCROLL_OFFSET   16

/* The time between each auto-scroll, in milliseconds. */
#define E_DAY_VIEW_AUTO_SCROLL_TIMEOUT  50

/* The number of timeouts we skip before we start scrolling. */
#define E_DAY_VIEW_AUTO_SCROLL_DELAY    5

/* The number of pixels the mouse has to be moved with the button down before
 * we start a drag. */
#define E_DAY_VIEW_DRAG_START_OFFSET    4

/* The amount we scroll the main canvas when the Page Up/Down keys are pressed,
 * as a fraction of the page size. */
#define E_DAY_VIEW_PAGE_STEP        0.5

/* The amount we scroll the main canvas when the mouse wheel buttons are
 * pressed, as a fraction of the page size. */
#define E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE    0.25

/* The timeout before we do a layout, so we don't do a layout for each event
 * we get from the server. */
#define E_DAY_VIEW_LAYOUT_TIMEOUT   100

/* How many rows can be shown at a top_canvas; there will be always + 2 for
 * caption item and DnD space */
#define E_DAY_VIEW_MAX_ROWS_AT_TOP     6

struct _EDayViewPrivate {
    ECalModel *model;
    gulong notify_work_day_monday_handler_id;
    gulong notify_work_day_tuesday_handler_id;
    gulong notify_work_day_wednesday_handler_id;
    gulong notify_work_day_thursday_handler_id;
    gulong notify_work_day_friday_handler_id;
    gulong notify_work_day_saturday_handler_id;
    gulong notify_work_day_sunday_handler_id;
};

typedef struct {
    EDayView *day_view;
    ECalModelComponent *comp_data;
} AddEventData;

/* Drag and Drop stuff. */
static GtkTargetEntry target_table[] = {
    { (gchar *) "application/x-e-calendar-event", 0, 0 }
};

static void e_day_view_set_colors (EDayView *day_view, GtkWidget *widget);
static gboolean e_day_view_update_scroll_regions (EDayView *day_view);
static gboolean e_day_view_get_next_tab_event (EDayView *day_view,
                           GtkDirectionType direction,
                           gint *day, gint *event_num);
static gboolean e_day_view_get_extreme_long_event (EDayView *day_view,
                           gboolean first,
                           gint *day_out,
                           gint *event_num_out);
static gboolean e_day_view_get_extreme_event (EDayView *day_view,
                          gint start_day,
                          gint end_day,
                          gboolean first,
                          gint *day_out,
                          gint *event_num_out);
static gboolean e_day_view_do_key_press (GtkWidget *widget,
                     GdkEventKey *event);
static void e_day_view_update_query (EDayView *day_view);
static void e_day_view_goto_start_of_work_day (EDayView *day_view);
static void e_day_view_goto_end_of_work_day (EDayView *day_view);
static void e_day_view_change_duration_to_start_of_work_day (EDayView *day_view);
static void e_day_view_change_duration_to_end_of_work_day (EDayView *day_view);
static void e_day_view_cursor_key_up_shifted (EDayView *day_view,
                          GdkEventKey *event);
static void e_day_view_cursor_key_down_shifted (EDayView *day_view,
                        GdkEventKey *event);
static void e_day_view_cursor_key_left_shifted (EDayView *day_view,
                        GdkEventKey *event);
static void e_day_view_cursor_key_right_shifted (EDayView *day_view,
                         GdkEventKey *event);
static void e_day_view_cursor_key_up (EDayView *day_view,
                      GdkEventKey *event);
static void e_day_view_cursor_key_down (EDayView *day_view,
                    GdkEventKey *event);
static void e_day_view_cursor_key_left (EDayView *day_view,
                    GdkEventKey *event);
static void e_day_view_cursor_key_right (EDayView *day_view,
                     GdkEventKey *event);
static void e_day_view_scroll   (EDayView   *day_view,
                 gfloat      pages_to_scroll);

static void e_day_view_top_scroll (EDayView *day_view,
                   gfloat    pages_to_scroll);

static void e_day_view_update_top_scroll (EDayView *day_view, gboolean scroll_to_top);

static void e_day_view_on_canvas_realized (GtkWidget *widget,
                       EDayView *day_view);

static gboolean e_day_view_on_top_canvas_button_press (GtkWidget *widget,
                               GdkEvent *button_event,
                               EDayView *day_view);
static gboolean e_day_view_on_top_canvas_button_release (GtkWidget *widget,
                             GdkEvent *button_event,
                             EDayView *day_view);
static gboolean e_day_view_on_top_canvas_motion (GtkWidget *widget,
                         GdkEventMotion *event,
                         EDayView *day_view);

static gboolean e_day_view_on_main_canvas_button_press (GtkWidget *widget,
                            GdkEvent *button_event,
                            EDayView *day_view);
static gboolean e_day_view_on_main_canvas_button_release (GtkWidget *widget,
                              GdkEvent *button_event,
                              EDayView *day_view);

static gboolean e_day_view_on_top_canvas_scroll (GtkWidget *widget,
                         GdkEventScroll *scroll,
                         EDayView *day_view);

static gboolean e_day_view_on_main_canvas_scroll (GtkWidget *widget,
                          GdkEventScroll *scroll,
                          EDayView *day_view);
static gboolean e_day_view_on_time_canvas_scroll (GtkWidget *widget,
                          GdkEventScroll *scroll,
                          EDayView *day_view);
static gboolean e_day_view_on_main_canvas_motion (GtkWidget *widget,
                          GdkEventMotion *event,
                          EDayView *day_view);
static gboolean e_day_view_convert_event_coords (EDayView *day_view,
                         GdkEvent *event,
                         GdkWindow *window,
                         gint *x_return,
                         gint *y_return);
static void e_day_view_update_long_event_resize (EDayView *day_view,
                         gint day);
static void e_day_view_update_resize (EDayView *day_view,
                      gint row);
static void e_day_view_finish_long_event_resize (EDayView *day_view);
static void e_day_view_finish_resize (EDayView *day_view);
static void e_day_view_abort_resize (EDayView *day_view);

static gboolean e_day_view_on_long_event_button_press (EDayView     *day_view,
                               gint      event_num,
                               GdkEvent *button_event,
                               ECalendarViewPosition  pos,
                               gint      event_x,
                               gint      event_y);
static gboolean e_day_view_on_event_button_press (EDayView   *day_view,
                          gint        day,
                          gint        event_num,
                          GdkEvent *button_event,
                          ECalendarViewPosition pos,
                          gint        event_x,
                          gint        event_y);
static void e_day_view_on_long_event_click (EDayView *day_view,
                        gint event_num,
                        GdkEvent *button_event,
                        ECalendarViewPosition pos,
                        gint         event_x,
                        gint         event_y);
static void e_day_view_on_event_click (EDayView *day_view,
                       gint day,
                       gint event_num,
                       GdkEvent *button_event,
                       ECalendarViewPosition pos,
                       gint     event_x,
                       gint     event_y);
static void e_day_view_on_event_double_click (EDayView *day_view,
                          gint day,
                          gint event_num);
static void e_day_view_on_event_right_click (EDayView *day_view,
                         GdkEvent *button_event,
                         gint day,
                         gint event_num);
static void e_day_view_show_popup_menu (EDayView *day_view,
                    GdkEvent *button_event,
                    gint day,
                    gint event_num);

static void e_day_view_recalc_day_starts (EDayView *day_view,
                      time_t start_time);
static void e_day_view_recalc_num_rows  (EDayView   *day_view);
static void e_day_view_recalc_cell_sizes    (EDayView   *day_view);

static ECalendarViewPosition e_day_view_convert_position_in_top_canvas (EDayView *day_view,
                                   gint x,
                                   gint y,
                                   gint *day_return,
                                   gint *event_num_return);
static ECalendarViewPosition e_day_view_convert_position_in_main_canvas (EDayView *day_view,
                                    gint x,
                                    gint y,
                                    gint *day_return,
                                    gint *row_return,
                                    gint *event_num_return);
static gboolean e_day_view_find_event_from_uid (EDayView *day_view,
                        ECalClient *client,
                        const gchar *uid,
                        const gchar *rid,
                        gint *day_return,
                        gint *event_num_return);

typedef gboolean (* EDayViewForeachEventCallback) (EDayView *day_view,
                           gint day,
                           gint event_num,
                           gpointer data);

static void e_day_view_foreach_event        (EDayView   *day_view,
                         EDayViewForeachEventCallback callback,
                         gpointer    data);
static void e_day_view_foreach_event_with_uid (EDayView *day_view,
                           const gchar *uid,
                           EDayViewForeachEventCallback callback,
                           gpointer data);

static void e_day_view_free_events (EDayView *day_view);
static void e_day_view_free_event_array (EDayView *day_view,
                     GArray *array);
static gint e_day_view_add_event (ESourceRegistry *registry,
                 ECalComponent *comp,
                 time_t   start,
                 time_t   end,
                 gpointer data);
static void e_day_view_update_event_label (EDayView *day_view,
                       gint day,
                       gint event_num);
static void e_day_view_update_long_event_label (EDayView *day_view,
                        gint event_num);

static void e_day_view_reshape_long_events (EDayView *day_view);
static void e_day_view_reshape_long_event (EDayView *day_view,
                       gint event_num);
static void e_day_view_reshape_day_events (EDayView *day_view,
                       gint day);
static void e_day_view_reshape_day_event (EDayView *day_view,
                      gint  day,
                      gint  event_num);
static void e_day_view_reshape_main_canvas_resize_bars (EDayView *day_view);

static void e_day_view_ensure_events_sorted (EDayView *day_view);

static void e_day_view_start_editing_event (EDayView *day_view,
                        gint day,
                        gint event_num,
                        GdkEventKey *key_event);
static void e_day_view_stop_editing_event (EDayView *day_view);
static gboolean e_day_view_on_text_item_event (GnomeCanvasItem *item,
                           GdkEvent *event,
                           EDayView *day_view);
static gboolean e_day_view_event_move (ECalendarView *cal_view, ECalViewMoveDirection direction);
static void e_day_view_change_event_time (EDayView *day_view, time_t start_dt,
time_t end_dt);
static void e_day_view_change_event_end_time_up (EDayView *day_view);
static void e_day_view_change_event_end_time_down (EDayView *day_view);
static void e_day_view_on_editing_started (EDayView *day_view,
                       GnomeCanvasItem *item);
static void e_day_view_on_editing_stopped (EDayView *day_view,
                       GnomeCanvasItem *item);

static time_t e_day_view_convert_grid_position_to_time (EDayView *day_view,
                            gint col,
                            gint row);
static gboolean e_day_view_convert_time_to_grid_position (EDayView *day_view,
                              time_t time,
                              gint *col,
                              gint *row);

static void e_day_view_start_auto_scroll (EDayView *day_view,
                      gboolean scroll_up);
static gboolean e_day_view_auto_scroll_handler (gpointer data);

static gboolean e_day_view_on_top_canvas_drag_motion (GtkWidget      *widget,
                              GdkDragContext *context,
                              gint            x,
                              gint            y,
                              guint           time,
                              EDayView    *day_view);
static void e_day_view_update_top_canvas_drag (EDayView *day_view,
                           gint day);
static void e_day_view_reshape_top_canvas_drag_item (EDayView *day_view);
static gboolean e_day_view_on_main_canvas_drag_motion (GtkWidget      *widget,
                               GdkDragContext *context,
                               gint            x,
                               gint            y,
                               guint           time,
                               EDayView   *day_view);
static void e_day_view_reshape_main_canvas_drag_item (EDayView *day_view);
static void e_day_view_update_main_canvas_drag (EDayView *day_view,
                        gint row,
                        gint day);
static void e_day_view_on_top_canvas_drag_leave (GtkWidget      *widget,
                         GdkDragContext *context,
                         guint           time,
                         EDayView        *day_view);
static void e_day_view_on_main_canvas_drag_leave (GtkWidget      *widget,
                          GdkDragContext *context,
                          guint           time,
                          EDayView   *day_view);
static void e_day_view_on_drag_begin (GtkWidget      *widget,
                      GdkDragContext *context,
                      EDayView     *day_view);
static void e_day_view_on_drag_end (GtkWidget      *widget,
                    GdkDragContext *context,
                    EDayView       *day_view);
static void e_day_view_on_drag_data_get (GtkWidget          *widget,
                     GdkDragContext     *context,
                     GtkSelectionData   *selection_data,
                     guint               info,
                     guint               time,
                     EDayView       *day_view);
static void e_day_view_on_top_canvas_drag_data_received (GtkWidget  *widget,
                             GdkDragContext *context,
                             gint            x,
                             gint            y,
                             GtkSelectionData *data,
                             guint           info,
                             guint           time,
                             EDayView   *day_view);
static void e_day_view_on_main_canvas_drag_data_received (GtkWidget      *widget,
                              GdkDragContext *context,
                              gint            x,
                              gint            y,
                              GtkSelectionData *data,
                              guint           info,
                              guint           time,
                              EDayView   *day_view);

static gboolean e_day_view_remove_event_cb (EDayView *day_view,
                        gint day,
                        gint event_num,
                        gpointer data);
static void e_day_view_normalize_selection (EDayView *day_view);
static gboolean e_day_view_set_show_times_cb    (EDayView   *day_view,
                         gint        day,
                         gint        event_num,
                         gpointer    data);
static time_t e_day_view_find_work_week_start   (EDayView   *day_view,
                         time_t      start_time);
static void e_day_view_recalc_work_week     (EDayView   *day_view);
static void e_day_view_recalc_work_week_days_shown  (EDayView   *day_view);

static void e_day_view_queue_layout (EDayView *day_view);
static void e_day_view_cancel_layout (EDayView *day_view);
static gboolean e_day_view_layout_timeout_cb (gpointer data);
static void tooltip_destroy (EDayView *day_view, GnomeCanvasItem *item);

enum {
    PROP_0,
    PROP_MARCUS_BAINS_SHOW_LINE,
    PROP_MARCUS_BAINS_DAY_VIEW_COLOR,
    PROP_MARCUS_BAINS_TIME_BAR_COLOR
};

G_DEFINE_TYPE (EDayView, e_day_view, E_TYPE_CALENDAR_VIEW)

static void
day_view_notify_time_divisions_cb (EDayView *day_view)
{
    gint day;

    e_day_view_recalc_num_rows (day_view);

    /* If we aren't visible, we'll sort it out later. */
    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    for (day = 0; day < E_DAY_VIEW_MAX_DAYS; day++)
        day_view->need_layout[day] = TRUE;

    /* We need to update all the day event labels since the start & end
     * times may or may not be on row boundaries any more. */
    e_day_view_foreach_event (day_view,
                  e_day_view_set_show_times_cb, NULL);

    /* We must layout the events before updating the scroll region, since
     * that will result in a redraw which would crash otherwise. */
    e_day_view_check_layout (day_view);
    gtk_widget_queue_draw (day_view->time_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);

    e_day_view_update_scroll_regions (day_view);
}

static void
day_view_notify_week_start_day_cb (EDayView *day_view)
{
    /* FIXME Write an EWorkWeekView subclass, like EMonthView. */

    if (day_view->work_week_view)
        e_day_view_recalc_work_week (day_view);
}

static void
day_view_notify_work_day_cb (ECalModel *model,
                             GParamSpec *pspec,
                             EDayView *day_view)
{
    /* FIXME Write an EWorkWeekView subclass, like EMonthView. */

    if (day_view->work_week_view)
        e_day_view_recalc_work_week (day_view);

    /* We have to do this, as the new working days may have no effect on
     * the days shown, but we still want the background color to change. */
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_recalc_main_canvas_size (EDayView *day_view)
{
    ECalModel *model;
    gint work_day_start_hour;
    gint work_day_start_minute;
    gint day, scroll_y;
    gboolean need_reshape;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    work_day_start_hour = e_cal_model_get_work_day_start_hour (model);
    work_day_start_minute = e_cal_model_get_work_day_start_minute (model);

    /* Set the scroll region of the top canvas */
    e_day_view_update_top_scroll (day_view, TRUE);

    need_reshape = e_day_view_update_scroll_regions (day_view);

    e_day_view_recalc_cell_sizes (day_view);

    /* Scroll to the start of the working day, if this is the initial
     * allocation. */
    if (day_view->scroll_to_work_day) {
        scroll_y = e_day_view_convert_time_to_position (
            day_view, work_day_start_hour, work_day_start_minute);
        gnome_canvas_scroll_to (
            GNOME_CANVAS (day_view->main_canvas), 0, scroll_y);
        day_view->scroll_to_work_day = FALSE;
    }

    /* Flag that we need to reshape the events. Note that changes in height
     * don't matter, since the rows are always the same height. */
    if (need_reshape) {
        day_view->long_events_need_reshape = TRUE;
        for (day = 0; day < E_DAY_VIEW_MAX_DAYS; day++)
            day_view->need_reshape[day] = TRUE;

        e_day_view_check_layout (day_view);
    }
}

static GdkColor
e_day_view_get_text_color (EDayView *day_view,
                           EDayViewEvent *event,
                           GtkWidget *widget)
{
    GtkStyle *style;
    GdkColor bg_color;
    guint16 red, green, blue;
    gdouble cc = 65535.0;

    red = day_view->colors[E_DAY_VIEW_COLOR_EVENT_BACKGROUND].red;
    green = day_view->colors[E_DAY_VIEW_COLOR_EVENT_BACKGROUND].green;
    blue = day_view->colors[E_DAY_VIEW_COLOR_EVENT_BACKGROUND].blue;

    if (is_comp_data_valid (event) && gdk_color_parse (e_cal_model_get_color_for_component (e_calendar_view_get_model (E_CALENDAR_VIEW (day_view)), event->comp_data),
         &bg_color)) {
        red = bg_color.red;
        green = bg_color.green;
        blue = bg_color.blue;
    }

    style = gtk_widget_get_style (widget);

    if ((red / cc > 0.7) || (green / cc > 0.7) || (blue / cc > 0.7))
        return style->black;
    else
        return style->white;
}

/* Returns the selected time range. */
static gboolean
day_view_get_selected_time_range (ECalendarView *cal_view,
                                  time_t *start_time,
                                  time_t *end_time)
{
    gint start_col, start_row, end_col, end_row;
    time_t start, end;
    EDayView *day_view = E_DAY_VIEW (cal_view);

    start_col = day_view->selection_start_day;
    start_row = day_view->selection_start_row;
    end_col = day_view->selection_end_day;
    end_row = day_view->selection_end_row;

    if (start_col == -1) {
        start_col = 0;
        start_row = 0;
        end_col = 0;
        end_row = 0;
    }

    /* Check if the selection is only in the top canvas, in which case
     * we can simply use the day_starts array. */
    if (day_view->selection_in_top_canvas) {
        start = day_view->day_starts[start_col];
        end = day_view->day_starts[end_col + 1];
    } else {
        /* Convert the start col + row into a time. */
        start = e_day_view_convert_grid_position_to_time (day_view, start_col, start_row);
        end = e_day_view_convert_grid_position_to_time (day_view, end_col, end_row + 1);
    }

    if (start_time)
        *start_time = start;

    if (end_time)
        *end_time = end;

    return TRUE;
}

static gboolean
e_day_view_add_new_event_in_selected_range (EDayView *day_view,
                                            GdkEventKey *key_event)
{
    icalcomponent *icalcomp;
    ECalClient *client;
    ECalModel *model;
    ECalComponent *comp;
    gint day, event_num;
    time_t dtstart, dtend;
    ECalComponentDateTime start_dt, end_dt;
    struct icaltimetype start_tt, end_tt;
    const gchar *uid;
    AddEventData add_event_data;
    ESourceRegistry *registry;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));

    registry = e_cal_model_get_registry (model);
    client = e_cal_model_get_default_client (model);

    /* Check if the client is read only */
    if (e_client_is_readonly (E_CLIENT (client)))
        return FALSE;

    icalcomp = e_cal_model_create_component_with_defaults (model, day_view->selection_in_top_canvas);
    if (!icalcomp)
        return FALSE;

    uid = icalcomponent_get_uid (icalcomp);

    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomp);

    day_view_get_selected_time_range ((ECalendarView *) day_view, &dtstart, &dtend);

    start_tt = icaltime_from_timet_with_zone (
        dtstart, FALSE,
        e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

    end_tt = icaltime_from_timet_with_zone (
        dtend, FALSE,
        e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

    if (day_view->selection_in_top_canvas) {
        start_dt.tzid = NULL;
        start_tt.is_date = 1;
        end_tt.is_date = 1;

        /* Editor default in day/work-week view - top canvas */
        e_cal_component_set_transparency (comp, E_CAL_COMPONENT_TRANSP_TRANSPARENT);
    } else {
        start_dt.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

        /* Editor default in day/work-week view - main canvas */
        e_cal_component_set_transparency (comp, E_CAL_COMPONENT_TRANSP_OPAQUE);
    }

    start_dt.value = &start_tt;
    end_dt.value = &end_tt;
    end_dt.tzid = start_dt.tzid;
    e_cal_component_set_dtstart (comp, &start_dt);
    e_cal_component_set_dtend (comp, &end_dt);

    e_cal_component_set_categories (
        comp, e_calendar_view_get_default_category (E_CALENDAR_VIEW (day_view)));

    /* We add the event locally and start editing it. We don't send it
     * to the server until the user finishes editing it. */
    add_event_data.day_view = day_view;
    add_event_data.comp_data = NULL;
    e_day_view_add_event (registry, comp, dtstart, dtend, &add_event_data);
    e_day_view_check_layout (day_view);
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);

    if (!e_day_view_find_event_from_uid (day_view, client, uid, NULL, &day, &event_num)) {
        g_warning ("Couldn't find event to start editing.\n");
        g_object_unref (comp);
        return FALSE;
    }

    e_day_view_start_editing_event (day_view, day, event_num, key_event);

    g_object_unref (comp);
    return TRUE;
}

static void
day_view_set_property (GObject *object,
                       guint property_id,
                       const GValue *value,
                       GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_MARCUS_BAINS_SHOW_LINE:
            e_day_view_marcus_bains_set_show_line (
                E_DAY_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_MARCUS_BAINS_DAY_VIEW_COLOR:
            e_day_view_marcus_bains_set_day_view_color (
                E_DAY_VIEW (object),
                g_value_get_string (value));
            return;

        case PROP_MARCUS_BAINS_TIME_BAR_COLOR:
            e_day_view_marcus_bains_set_time_bar_color (
                E_DAY_VIEW (object),
                g_value_get_string (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
day_view_get_property (GObject *object,
                       guint property_id,
                       GValue *value,
                       GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_MARCUS_BAINS_SHOW_LINE:
            g_value_set_boolean (
                value,
                e_day_view_marcus_bains_get_show_line (
                E_DAY_VIEW (object)));
            return;

        case PROP_MARCUS_BAINS_DAY_VIEW_COLOR:
            g_value_set_string (
                value,
                e_day_view_marcus_bains_get_day_view_color (
                E_DAY_VIEW (object)));
            return;

        case PROP_MARCUS_BAINS_TIME_BAR_COLOR:
            g_value_set_string (
                value,
                e_day_view_marcus_bains_get_time_bar_color (
                E_DAY_VIEW (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
day_view_dispose (GObject *object)
{
    EDayView *day_view;
    gint day;

    day_view = E_DAY_VIEW (object);

    e_day_view_cancel_layout (day_view);

    e_day_view_stop_auto_scroll (day_view);

    if (day_view->large_font_desc) {
        pango_font_description_free (day_view->large_font_desc);
        day_view->large_font_desc = NULL;
    }

    if (day_view->small_font_desc) {
        pango_font_description_free (day_view->small_font_desc);
        day_view->small_font_desc = NULL;
    }

    if (day_view->normal_cursor) {
        g_object_unref (day_view->normal_cursor);
        day_view->normal_cursor = NULL;
    }
    if (day_view->move_cursor) {
        g_object_unref (day_view->move_cursor);
        day_view->move_cursor = NULL;
    }
    if (day_view->resize_width_cursor) {
        g_object_unref (day_view->resize_width_cursor);
        day_view->resize_width_cursor = NULL;
    }
    if (day_view->resize_height_cursor) {
        g_object_unref (day_view->resize_height_cursor);
        day_view->resize_height_cursor = NULL;
    }

    if (day_view->long_events) {
        e_day_view_free_events (day_view);
        g_array_free (day_view->long_events, TRUE);
        day_view->long_events = NULL;
    }

    for (day = 0; day < E_DAY_VIEW_MAX_DAYS; day++) {
        if (day_view->events[day]) {
            g_array_free (day_view->events[day], TRUE);
            day_view->events[day] = NULL;
        }
    }

    if (day_view->grabbed_pointer != NULL) {
        gdk_device_ungrab (
            day_view->grabbed_pointer,
            GDK_CURRENT_TIME);
        g_object_unref (day_view->grabbed_pointer);
        day_view->grabbed_pointer = NULL;
    }

    if (day_view->priv->notify_work_day_monday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_monday_handler_id);
        day_view->priv->notify_work_day_monday_handler_id = 0;
    }

    if (day_view->priv->notify_work_day_tuesday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_tuesday_handler_id);
        day_view->priv->notify_work_day_tuesday_handler_id = 0;
    }

    if (day_view->priv->notify_work_day_wednesday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_wednesday_handler_id);
        day_view->priv->notify_work_day_wednesday_handler_id = 0;
    }

    if (day_view->priv->notify_work_day_thursday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_thursday_handler_id);
        day_view->priv->notify_work_day_thursday_handler_id = 0;
    }

    if (day_view->priv->notify_work_day_friday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_friday_handler_id);
        day_view->priv->notify_work_day_friday_handler_id = 0;
    }

    if (day_view->priv->notify_work_day_saturday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_saturday_handler_id);
        day_view->priv->notify_work_day_saturday_handler_id = 0;
    }

    if (day_view->priv->notify_work_day_sunday_handler_id > 0) {
        g_signal_handler_disconnect (
            day_view->priv->model,
            day_view->priv->notify_work_day_sunday_handler_id);
        day_view->priv->notify_work_day_sunday_handler_id = 0;
    }

    g_clear_object (&day_view->priv->model);

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (e_day_view_parent_class)->dispose (object);
}

static void
day_view_constructed (GObject *object)
{
    EDayView *day_view;
    ECalModel *model;
    gulong handler_id;

    day_view = E_DAY_VIEW (object);

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_day_view_parent_class)->constructed (object);

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));

    /* Keep our own model reference so we can
     * disconnect signal handlers in dispose(). */
    day_view->priv->model = g_object_ref (model);

    handler_id = g_signal_connect (
        model, "notify::work-day-monday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_monday_handler_id = handler_id;

    handler_id = g_signal_connect (
        model, "notify::work-day-tuesday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_tuesday_handler_id = handler_id;

    handler_id = g_signal_connect (
        model, "notify::work-day-wednesday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_wednesday_handler_id = handler_id;

    handler_id = g_signal_connect (
        model, "notify::work-day-thursday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_thursday_handler_id = handler_id;

    handler_id = g_signal_connect (
        model, "notify::work-day-friday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_friday_handler_id = handler_id;

    handler_id = g_signal_connect (
        model, "notify::work-day-saturday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_saturday_handler_id = handler_id;

    handler_id = g_signal_connect (
        model, "notify::work-day-sunday",
        G_CALLBACK (day_view_notify_work_day_cb), day_view);
    day_view->priv->notify_work_day_sunday_handler_id = handler_id;

    /* FIXME Should be doing something similar for these handlers. */

    g_signal_connect_swapped (
        day_view, "notify::time-divisions",
        G_CALLBACK (day_view_notify_time_divisions_cb), day_view);

    g_signal_connect_swapped (
        model, "notify::week-start-day",
        G_CALLBACK (day_view_notify_week_start_day_cb), day_view);

    g_signal_connect_swapped (
        model, "notify::work-day-start-hour",
        G_CALLBACK (gtk_widget_queue_draw), day_view->main_canvas);

    g_signal_connect_swapped (
        model, "notify::work-day-start-minute",
        G_CALLBACK (gtk_widget_queue_draw), day_view->main_canvas);

    g_signal_connect_swapped (
        model, "notify::work-day-end-hour",
        G_CALLBACK (gtk_widget_queue_draw), day_view->main_canvas);

    g_signal_connect_swapped (
        model, "notify::work-day-end-minute",
        G_CALLBACK (gtk_widget_queue_draw), day_view->main_canvas);
}

static void
day_view_realize (GtkWidget *widget)
{
    EDayView *day_view;

    if (GTK_WIDGET_CLASS (e_day_view_parent_class)->realize)
        (*GTK_WIDGET_CLASS (e_day_view_parent_class)->realize)(widget);

    day_view = E_DAY_VIEW (widget);

    /* Allocate the colors. */

    e_day_view_set_colors (day_view, widget);

    /* Create the pixmaps. */
    day_view->reminder_icon = e_icon_factory_get_icon ("stock_bell", GTK_ICON_SIZE_MENU);
    day_view->recurrence_icon = e_icon_factory_get_icon ("view-refresh", GTK_ICON_SIZE_MENU);
    day_view->timezone_icon = e_icon_factory_get_icon ("stock_timezone", GTK_ICON_SIZE_MENU);
    day_view->meeting_icon = e_icon_factory_get_icon ("stock_people", GTK_ICON_SIZE_MENU);
    day_view->attach_icon = e_icon_factory_get_icon ("mail-attachment", GTK_ICON_SIZE_MENU);

    /* Set the canvas item colors. */
    gnome_canvas_item_set (
        day_view->drag_long_event_rect_item,
        "fill_color_gdk", &day_view->colors[E_DAY_VIEW_COLOR_EVENT_BACKGROUND],
        "outline_color_gdk", &day_view->colors[E_DAY_VIEW_COLOR_EVENT_BORDER],
        NULL);

    gnome_canvas_item_set (
        day_view->drag_rect_item,
        "fill_color_gdk", &day_view->colors[E_DAY_VIEW_COLOR_EVENT_BACKGROUND],
        "outline_color_gdk", &day_view->colors[E_DAY_VIEW_COLOR_EVENT_BORDER],
        NULL);

    gnome_canvas_item_set (
        day_view->drag_bar_item,
        "fill_color_gdk", &day_view->colors[E_DAY_VIEW_COLOR_EVENT_VBAR],
        "outline_color_gdk", &day_view->colors[E_DAY_VIEW_COLOR_EVENT_BORDER],
        NULL);
}

static void
day_view_unrealize (GtkWidget *widget)
{
    EDayView *day_view;

    day_view = E_DAY_VIEW (widget);

    g_object_unref (day_view->reminder_icon);
    day_view->reminder_icon = NULL;
    g_object_unref (day_view->recurrence_icon);
    day_view->recurrence_icon = NULL;
    g_object_unref (day_view->timezone_icon);
    day_view->timezone_icon = NULL;
    g_object_unref (day_view->meeting_icon);
    day_view->meeting_icon = NULL;
    g_object_unref (day_view->attach_icon);
    day_view->attach_icon = NULL;

    if (GTK_WIDGET_CLASS (e_day_view_parent_class)->unrealize)
        (*GTK_WIDGET_CLASS (e_day_view_parent_class)->unrealize)(widget);
}

static void
day_view_size_allocate (GtkWidget *widget,
                        GtkAllocation *allocation)
{
    (*GTK_WIDGET_CLASS (e_day_view_parent_class)->size_allocate) (widget, allocation);

    e_day_view_recalc_main_canvas_size (E_DAY_VIEW (widget));
}

static void
day_view_style_set (GtkWidget *widget,
                    GtkStyle *previous_style)
{
    EDayView *day_view;
    gint hour;
    gint minute, max_minute_width, i;
    gint month, day, width;
    gint longest_month_width, longest_abbreviated_month_width;
    gint longest_weekday_width, longest_abbreviated_weekday_width;
    gchar buffer[128];
    const gchar *name;
    gint times_width;
    PangoFontDescription *font_desc;
    PangoContext *pango_context;
    PangoFontMetrics *font_metrics;
    PangoLayout *layout;
    gint week_day, event_num;
    GtkAdjustment *adjustment;
    EDayViewEvent *event;
    GdkColor color;

    if (GTK_WIDGET_CLASS (e_day_view_parent_class)->style_set)
        (*GTK_WIDGET_CLASS (e_day_view_parent_class)->style_set)(widget, previous_style);

    day_view = E_DAY_VIEW (widget);
    e_day_view_set_colors (day_view, widget);

    for (week_day = 0; week_day < E_DAY_VIEW_MAX_DAYS; week_day++) {
        for (event_num = 0; event_num < day_view->events[week_day]->len; event_num++) {
            event = &g_array_index (day_view->events[week_day], EDayViewEvent, event_num);
            if (event->canvas_item) {
                color = e_day_view_get_text_color (day_view, event, widget);
                gnome_canvas_item_set (
                    event->canvas_item,
                    "fill_color_gdk", &color,
                    NULL);
            }
        }
    }
    for (event_num = 0; event_num < day_view->long_events->len; event_num++) {
        event = &g_array_index (day_view->long_events, EDayViewEvent, event_num);
        if (event->canvas_item) {
            color = e_day_view_get_text_color (day_view, event, widget);
            gnome_canvas_item_set (
                event->canvas_item,
                "fill_color_gdk", &color,
                NULL);
        }
    }

    /* Set up Pango prerequisites */
    font_desc = gtk_widget_get_style (widget)->font_desc;
    pango_context = gtk_widget_get_pango_context (widget);
    font_metrics = pango_context_get_metrics (
        pango_context, font_desc,
        pango_context_get_language (pango_context));
    layout = pango_layout_new (pango_context);

    /* Create the large font. */
    if (day_view->large_font_desc != NULL)
        pango_font_description_free (day_view->large_font_desc);

    day_view->large_font_desc = pango_font_description_copy (font_desc);
    pango_font_description_set_size (
        day_view->large_font_desc,
        E_DAY_VIEW_LARGE_FONT_PTSIZE * PANGO_SCALE);

    /* Create the small fonts. */
    if (day_view->small_font_desc != NULL)
        pango_font_description_free (day_view->small_font_desc);

    day_view->small_font_desc = pango_font_description_copy (font_desc);
    pango_font_description_set_size (
        day_view->small_font_desc,
        E_DAY_VIEW_SMALL_FONT_PTSIZE * PANGO_SCALE);

    /* Recalculate the height of each row based on the font size. */
    day_view->row_height =
        PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) +
        PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)) +
        E_DAY_VIEW_EVENT_BORDER_HEIGHT + E_DAY_VIEW_EVENT_Y_PAD * 2 + 2 /* FIXME */;
    day_view->row_height = MAX (
        day_view->row_height,
        E_DAY_VIEW_ICON_HEIGHT + E_DAY_VIEW_ICON_Y_PAD + 2);

    adjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (day_view->main_canvas));
    gtk_adjustment_set_step_increment (adjustment, day_view->row_height);

    day_view->top_row_height =
        PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) +
        PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)) +
        E_DAY_VIEW_LONG_EVENT_BORDER_HEIGHT * 2 + E_DAY_VIEW_LONG_EVENT_Y_PAD * 2 +
        E_DAY_VIEW_TOP_CANVAS_Y_GAP;
    day_view->top_row_height =
        MAX (
            day_view->top_row_height,
        E_DAY_VIEW_ICON_HEIGHT + E_DAY_VIEW_ICON_Y_PAD + 2 +
        E_DAY_VIEW_TOP_CANVAS_Y_GAP);

    adjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (day_view->top_canvas));
    gtk_adjustment_set_step_increment (adjustment, day_view->top_row_height);
    gtk_widget_set_size_request (day_view->top_dates_canvas, -1, day_view->top_row_height - 2);

    e_day_view_update_top_scroll (day_view, TRUE);

    /* Find the longest full & abbreviated month names. */
    longest_month_width = 0;
    longest_abbreviated_month_width = 0;
    for (month = 0; month < 12; month++) {
        name = e_get_month_name (month + 1, FALSE);
        pango_layout_set_text (layout, name, -1);
        pango_layout_get_pixel_size (layout, &width, NULL);

        if (width > longest_month_width) {
            longest_month_width = width;
            day_view->longest_month_name = month;
        }

        name = e_get_month_name (month + 1, TRUE);
        pango_layout_set_text (layout, name, -1);
        pango_layout_get_pixel_size (layout, &width, NULL);

        if (width > longest_abbreviated_month_width) {
            longest_abbreviated_month_width = width;
            day_view->longest_abbreviated_month_name = month;
        }
    }

    /* Find the longest full & abbreviated weekday names. */
    longest_weekday_width = 0;
    longest_abbreviated_weekday_width = 0;
    for (day = 0; day < 7; day++) {
        name = e_get_weekday_name (day + 1, FALSE);
        pango_layout_set_text (layout, name, -1);
        pango_layout_get_pixel_size (layout, &width, NULL);

        if (width > longest_weekday_width) {
            longest_weekday_width = width;
            day_view->longest_weekday_name = day;
        }

        name = e_get_weekday_name (day + 1, TRUE);
        pango_layout_set_text (layout, name, -1);
        pango_layout_get_pixel_size (layout, &width, NULL);

        if (width > longest_abbreviated_weekday_width) {
            longest_abbreviated_weekday_width = width;
            day_view->longest_abbreviated_weekday_name = day;
        }
    }

    /* Calculate the widths of all the time strings necessary. */
    day_view->max_small_hour_width = 0;
    for (hour = 0; hour < 24; hour++) {
        g_snprintf (buffer, sizeof (buffer), "%02i", hour);
        pango_layout_set_text (layout, buffer, -1);
        pango_layout_get_pixel_size (layout, &day_view->small_hour_widths[hour], NULL);

        day_view->max_small_hour_width = MAX (day_view->max_small_hour_width, day_view->small_hour_widths[hour]);
    }

    max_minute_width = 0;
    for (minute = 0, i = 0; minute < 60; minute += 5, i++) {
        gint minute_width;

        g_snprintf (buffer, sizeof (buffer), "%02i", minute);
        pango_layout_set_text (layout, buffer, -1);
        pango_layout_get_pixel_size (layout, &minute_width, NULL);

        max_minute_width = MAX (max_minute_width, minute_width);
    }
    day_view->max_minute_width = max_minute_width;

    pango_layout_set_text (layout, ":", 1);
    pango_layout_get_pixel_size (layout, &day_view->colon_width, NULL);
    pango_layout_set_text (layout, "0", 1);
    pango_layout_get_pixel_size (layout, &day_view->digit_width, NULL);

    pango_layout_set_text (layout, day_view->am_string, -1);
    pango_layout_get_pixel_size (layout, &day_view->am_string_width, NULL);
    pango_layout_set_text (layout, day_view->pm_string, -1);
    pango_layout_get_pixel_size (layout, &day_view->pm_string_width, NULL);

    /* Calculate the width of the time column. */
    times_width = e_day_view_time_item_get_column_width (E_DAY_VIEW_TIME_ITEM (day_view->time_canvas_item));
    gtk_widget_set_size_request (day_view->time_canvas, times_width, -1);

    g_object_unref (layout);
    pango_font_metrics_unref (font_metrics);
}

static gboolean
day_view_focus (GtkWidget *widget,
                GtkDirectionType direction)
{
    EDayView *day_view;
    gint new_day;
    gint new_event_num;
    gint start_row, end_row;

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (E_IS_DAY_VIEW (widget), FALSE);
    day_view = E_DAY_VIEW (widget);

    if (!e_day_view_get_next_tab_event (day_view, direction,
                        &new_day, &new_event_num))
        return FALSE;

    if ((new_day == -1) && (new_event_num == -1)) {
        /* focus should go to the day view widget itself
         */
        gtk_widget_grab_focus (GTK_WIDGET (day_view));
        return TRUE;
    }

    if (new_day != E_DAY_VIEW_LONG_EVENT && new_day != -1) {
        if (e_day_view_get_event_rows (day_view, new_day,
                           new_event_num,
                           &start_row, &end_row))
            /* ensure the event to be seen */
            e_day_view_ensure_rows_visible (
                day_view,
                start_row, end_row);
    }
    e_day_view_start_editing_event (
        day_view, new_day,
        new_event_num, NULL);

    return TRUE;
}

static gboolean
day_view_key_press (GtkWidget *widget,
                    GdkEventKey *event)
{
    gboolean handled = FALSE;
    handled = e_day_view_do_key_press (widget, event);

    /* if not handled, try key bindings */
    if (!handled)
        handled = GTK_WIDGET_CLASS (e_day_view_parent_class)->key_press_event (widget, event);
    return handled;
}

static gint
day_view_focus_in (GtkWidget *widget,
                   GdkEventFocus *event)
{
    EDayView *day_view;

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (E_IS_DAY_VIEW (widget), FALSE);
    g_return_val_if_fail (event != NULL, FALSE);

    day_view = E_DAY_VIEW (widget);

    /* XXX Can't access flags directly anymore, but is it really needed?
     *     If so, could we call gtk_widget_send_focus_change() instead? */
#if 0
    GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
#endif

    if (E_CALENDAR_VIEW (day_view)->in_focus && day_view->requires_update) {
        time_t my_start = 0, my_end = 0, model_start = 0, model_end = 0;

        day_view->requires_update = FALSE;

        e_cal_model_get_time_range (e_calendar_view_get_model (E_CALENDAR_VIEW (day_view)), &model_start, &model_end);

        if (e_calendar_view_get_visible_time_range (E_CALENDAR_VIEW (day_view), &my_start, &my_end) &&
            model_start == my_start && model_end == my_end) {
            /* update only when the same time range is set in a view and in a model;
             * otherwise time range change invokes also query update */
            e_day_view_recalc_day_starts (day_view, day_view->lower);
            e_day_view_update_query (day_view);
        }
    }

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);

    return FALSE;
}

static gint
day_view_focus_out (GtkWidget *widget,
                    GdkEventFocus *event)
{
    EDayView *day_view;

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (E_IS_DAY_VIEW (widget), FALSE);
    g_return_val_if_fail (event != NULL, FALSE);

    day_view = E_DAY_VIEW (widget);

    /* XXX Can't access flags directly anymore, but is it really needed?
     *     If so, could we call gtk_widget_send_focus_change() instead? */
#if 0
    GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
#endif

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);

    return FALSE;
}

static gboolean
day_view_popup_menu (GtkWidget *widget)
{
    EDayView *day_view = E_DAY_VIEW (widget);
    e_day_view_show_popup_menu (
        day_view, NULL,
        day_view->editing_event_day,
        day_view->editing_event_num);
    return TRUE;
}

/* Returns the currently-selected event, or NULL if none */
static GList *
day_view_get_selected_events (ECalendarView *cal_view)
{
    EDayViewEvent *event = NULL;
    GList *list = NULL;
    EDayView *day_view = (EDayView *) cal_view;

    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), NULL);

    if (day_view->editing_event_num != -1) {
        if (day_view->editing_event_day == E_DAY_VIEW_LONG_EVENT) {
            if (!is_array_index_in_bounds (day_view->long_events, day_view->editing_event_num))
                return NULL;

            event = &g_array_index (day_view->long_events,
                        EDayViewEvent,
                        day_view->editing_event_num);
        } else {
            if (!is_array_index_in_bounds (day_view->events[day_view->editing_event_day], day_view->editing_event_num))
                return NULL;

            event = &g_array_index (day_view->events[day_view->editing_event_day],
                        EDayViewEvent,
                        day_view->editing_event_num);
        }
    } else if (day_view->popup_event_num != -1) {
        if (day_view->popup_event_day == E_DAY_VIEW_LONG_EVENT) {
            if (!is_array_index_in_bounds (day_view->long_events, day_view->popup_event_num))
                return NULL;

            event = &g_array_index (day_view->long_events,
                        EDayViewEvent,
                        day_view->popup_event_num);
        } else {
            if (!is_array_index_in_bounds (day_view->events[day_view->popup_event_day], day_view->popup_event_num))
                return NULL;

            event = &g_array_index (day_view->events[day_view->popup_event_day],
                        EDayViewEvent,
                        day_view->popup_event_num);
        }
    }

    if (event)
        list = g_list_append (list, event);

    return list;
}

/* This sets the selected time range. If the start_time & end_time are not equal
 * and are both visible in the view, then the selection is set to those times,
 * otherwise it is set to 1 hour from the start of the working day. */
static void
day_view_set_selected_time_range (ECalendarView *cal_view,
                                  time_t start_time,
                                  time_t end_time)
{
    ECalModel *model;
    EDayView *day_view;
    gint work_day_start_hour;
    gint work_day_start_minute;
    gint start_row, start_col, end_row, end_col;
    gboolean need_redraw = FALSE, start_in_grid, end_in_grid;

    day_view = E_DAY_VIEW (cal_view);
    model = e_calendar_view_get_model (cal_view);
    work_day_start_hour = e_cal_model_get_work_day_start_hour (model);
    work_day_start_minute = e_cal_model_get_work_day_start_minute (model);

    if (start_time == end_time)
        end_time += e_calendar_view_get_time_divisions (cal_view) * 60;

    /* Set the selection. */
    start_in_grid = e_day_view_convert_time_to_grid_position (
        day_view,
        start_time,
        &start_col,
        &start_row);
    end_in_grid = e_day_view_convert_time_to_grid_position (
        day_view,
        end_time - 60,
        &end_col,
        &end_row);

    /* If either of the times isn't in the grid, or the selection covers
     * an entire day, we set the selection to 1 row from the start of the
     * working day, in the day corresponding to the start time. */
    if (!start_in_grid || !end_in_grid
        || (start_row == 0 && end_row == day_view->rows - 1)) {
        end_col = start_col;

        start_row = e_day_view_convert_time_to_row (
            day_view, work_day_start_hour, work_day_start_minute);
        start_row = CLAMP (start_row, 0, day_view->rows - 1);
        end_row = start_row;
    }

    if (start_row != day_view->selection_start_row
        || start_col != day_view->selection_start_day) {
        need_redraw = TRUE;
        day_view->selection_in_top_canvas = FALSE;
        day_view->selection_start_row = start_row;
        day_view->selection_start_day = start_col;
    }

    if (end_row != day_view->selection_end_row
        || end_col != day_view->selection_end_day) {
        need_redraw = TRUE;
        day_view->selection_in_top_canvas = FALSE;
        day_view->selection_end_row = end_row;
        day_view->selection_end_day = end_col;
    }

    if (need_redraw) {
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->top_dates_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
}

/* Gets the visible time range. Returns FALSE if no time range has been set. */
static gboolean
day_view_get_visible_time_range (ECalendarView *cal_view,
                                 time_t *start_time,
                                 time_t *end_time)
{
    EDayView *day_view = E_DAY_VIEW (cal_view);

    /* If the date isn't set, return FALSE. */
    if (day_view->lower == 0 && day_view->upper == 0)
        return FALSE;

    *start_time = day_view->day_starts[0];
    *end_time = day_view->day_starts[day_view->days_shown];

    return TRUE;
}

static void
day_view_paste_text (ECalendarView *cal_view)
{
    EDayView *day_view;
    EDayViewEvent *event;

    g_return_if_fail (E_IS_DAY_VIEW (cal_view));

    day_view = E_DAY_VIEW (cal_view);

    if (day_view->editing_event_num == -1 &&
        !e_day_view_add_new_event_in_selected_range (day_view, NULL))
        return;

    if (day_view->editing_event_day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, day_view->editing_event_num))
            return;

        event = &g_array_index (day_view->long_events,
                    EDayViewEvent,
                    day_view->editing_event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day_view->editing_event_day], day_view->editing_event_num))
            return;

        event = &g_array_index (day_view->events[day_view->editing_event_day],
                    EDayViewEvent,
                    day_view->editing_event_num);
    }

    if (event->canvas_item &&
        E_IS_TEXT (event->canvas_item) &&
        E_TEXT (event->canvas_item)->editing) {
        e_text_paste_clipboard (E_TEXT (event->canvas_item));
    }
}

static void
e_day_view_class_init (EDayViewClass *class)
{
    GObjectClass *object_class;
    GtkWidgetClass *widget_class;
    ECalendarViewClass *view_class;

    g_type_class_add_private (class, sizeof (EDayViewPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = day_view_set_property;
    object_class->get_property = day_view_get_property;
    object_class->constructed = day_view_constructed;
    object_class->dispose = day_view_dispose;

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->realize = day_view_realize;
    widget_class->unrealize = day_view_unrealize;
    widget_class->size_allocate = day_view_size_allocate;
    widget_class->style_set = day_view_style_set;
    widget_class->focus = day_view_focus;
    widget_class->key_press_event = day_view_key_press;
    widget_class->focus_in_event = day_view_focus_in;
    widget_class->focus_out_event = day_view_focus_out;
    widget_class->popup_menu = day_view_popup_menu;

    view_class = E_CALENDAR_VIEW_CLASS (class);
    view_class->get_selected_events = day_view_get_selected_events;
    view_class->get_selected_time_range = day_view_get_selected_time_range;
    view_class->set_selected_time_range = day_view_set_selected_time_range;
    view_class->get_visible_time_range = day_view_get_visible_time_range;
    view_class->paste_text = day_view_paste_text;

    /* XXX Should these be constructor properties? */

    g_object_class_install_property (
        object_class,
        PROP_MARCUS_BAINS_SHOW_LINE,
        g_param_spec_boolean (
            "marcus-bains-show-line",
            "Marcus Bains Show Line",
            NULL,
            TRUE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_MARCUS_BAINS_DAY_VIEW_COLOR,
        g_param_spec_string (
            "marcus-bains-day-view-color",
            "Marcus Bains Day View Color",
            NULL,
            NULL,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_MARCUS_BAINS_TIME_BAR_COLOR,
        g_param_spec_string (
            "marcus-bains-time-bar-color",
            "Marcus Bains Time Bar Color",
            NULL,
            NULL,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    /* init the accessibility support for e_day_view */
    e_day_view_a11y_init ();
}

static void
e_day_view_init (EDayView *day_view)
{
    gint day;
    GnomeCanvasGroup *canvas_group;
    GtkAdjustment *adjustment;
    GtkScrollable *scrollable;
    GtkWidget *w;

    day_view->priv = E_DAY_VIEW_GET_PRIVATE (day_view);

    gtk_widget_set_can_focus (GTK_WIDGET (day_view), TRUE);

    day_view->long_events = g_array_new (
        FALSE, FALSE,
        sizeof (EDayViewEvent));
    day_view->long_events_sorted = TRUE;
    day_view->long_events_need_layout = FALSE;
    day_view->long_events_need_reshape = FALSE;

    day_view->layout_timeout_id = 0;

    for (day = 0; day < E_DAY_VIEW_MAX_DAYS; day++) {
        day_view->events[day] = g_array_new (
            FALSE, FALSE,
            sizeof (EDayViewEvent));
        day_view->events_sorted[day] = TRUE;
        day_view->need_layout[day] = FALSE;
        day_view->need_reshape[day] = FALSE;
    }

    /* These indicate that the times haven't been set. */
    day_view->lower = 0;
    day_view->upper = 0;

    day_view->work_week_view = FALSE;
    day_view->days_shown = 1;

    day_view->date_format = E_DAY_VIEW_DATE_FULL;
    day_view->rows_in_top_display = 0;

    /* Note that these don't work yet. It would need a few fixes to the
     * way event->start_minute and event->end_minute are used, and there
     * may be problems with events that go outside the visible times. */
    day_view->first_hour_shown = 0;
    day_view->first_minute_shown = 0;
    day_view->last_hour_shown = 24;
    day_view->last_minute_shown = 0;

    e_day_view_recalc_num_rows (day_view);

    day_view->show_event_end_times = TRUE;
    day_view->scroll_to_work_day = TRUE;

    day_view->marcus_bains_show_line = TRUE;
    day_view->marcus_bains_day_view_color = NULL;
    day_view->marcus_bains_time_bar_color = NULL;

    day_view->editing_event_day = -1;
    day_view->editing_event_num = -1;

    day_view->resize_event_num = -1;
    day_view->resize_bars_event_day = -1;
    day_view->resize_bars_event_num = -1;

    day_view->last_edited_comp_string = NULL;

    day_view->selection_start_row = -1;
    day_view->selection_start_day = -1;
    day_view->selection_end_row = -1;
    day_view->selection_end_day = -1;
    day_view->selection_is_being_dragged = FALSE;
    day_view->selection_drag_pos = E_DAY_VIEW_DRAG_END;
    day_view->selection_in_top_canvas = FALSE;
    day_view->drag_event_day = -1;
    day_view->drag_event_num = -1;
    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_NONE;

    day_view->pressed_event_day = -1;

    day_view->drag_event_day = -1;
    day_view->drag_last_day = -1;

    day_view->auto_scroll_timeout_id = 0;

    day_view->large_font_desc = NULL;
    day_view->small_font_desc = NULL;

    /* String to use in 12-hour time format for times in the morning. */
    day_view->am_string = _("am");

    /* String to use in 12-hour time format for times in the afternoon. */
    day_view->pm_string = _("pm");

    day_view->bc_event_time = 0;
    day_view->before_click_dtstart = 0;
    day_view->before_click_dtend = 0;

    day_view->week_number_label = gtk_label_new ("");
    gtk_table_attach (GTK_TABLE (day_view), day_view->week_number_label, 0, 1, 0, 1, GTK_FILL, GTK_FILL, 0, 0);

    /*
     * Top Canvas
     */
    w = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);

    day_view->top_dates_canvas = e_canvas_new ();
    gtk_box_pack_start (GTK_BOX (w), day_view->top_dates_canvas, TRUE, TRUE, 0);
    day_view->top_canvas = e_canvas_new ();
    gtk_box_pack_end (GTK_BOX (w), day_view->top_canvas, TRUE, TRUE, 0);

    gtk_table_attach (
        GTK_TABLE (day_view), w,
        1, 2, 0, 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
    gtk_widget_show_all (w);

    g_signal_connect_after (
        day_view->top_canvas, "button_press_event",
        G_CALLBACK (e_day_view_on_top_canvas_button_press), day_view);
    g_signal_connect (
        day_view->top_canvas, "button_release_event",
        G_CALLBACK (e_day_view_on_top_canvas_button_release), day_view);
    g_signal_connect (
        day_view->top_canvas, "scroll_event",
        G_CALLBACK (e_day_view_on_top_canvas_scroll), day_view);
    g_signal_connect (
        day_view->top_canvas, "motion_notify_event",
        G_CALLBACK (e_day_view_on_top_canvas_motion), day_view);
    g_signal_connect (
        day_view->top_canvas, "drag_motion",
        G_CALLBACK (e_day_view_on_top_canvas_drag_motion), day_view);
    g_signal_connect (
        day_view->top_canvas, "drag_leave",
        G_CALLBACK (e_day_view_on_top_canvas_drag_leave), day_view);

    g_signal_connect (
        day_view->top_canvas, "drag_begin",
        G_CALLBACK (e_day_view_on_drag_begin), day_view);
    g_signal_connect (
        day_view->top_canvas, "drag_end",
        G_CALLBACK (e_day_view_on_drag_end), day_view);
    g_signal_connect (
        day_view->top_canvas, "drag_data_get",
        G_CALLBACK (e_day_view_on_drag_data_get), day_view);
    g_signal_connect (
        day_view->top_canvas, "drag_data_received",
        G_CALLBACK (e_day_view_on_top_canvas_drag_data_received), day_view);

    canvas_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->top_dates_canvas)->root);

    day_view->top_dates_canvas_item =
        gnome_canvas_item_new (
            canvas_group,
            e_day_view_top_item_get_type (),
            "EDayViewTopItem::day_view", day_view,
            "EDayViewTopItem::show_dates", TRUE,
            NULL);
    gtk_widget_set_size_request (day_view->top_dates_canvas, -1, day_view->top_row_height);

    canvas_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->top_canvas)->root);

    day_view->top_canvas_item =
        gnome_canvas_item_new (
            canvas_group,
            e_day_view_top_item_get_type (),
            "EDayViewTopItem::day_view", day_view,
            "EDayViewTopItem::show_dates", FALSE,
            NULL);

    day_view->drag_long_event_rect_item =
        gnome_canvas_item_new (
            canvas_group,
            gnome_canvas_rect_get_type (),
            "line_width", 1.0,
            NULL);
    gnome_canvas_item_hide (day_view->drag_long_event_rect_item);

    day_view->drag_long_event_item =
        gnome_canvas_item_new (
            canvas_group,
            e_text_get_type (),
            "line_wrap", TRUE,
            "clip", TRUE,
            "max_lines", 1,
            "editable", TRUE,
            "fill_color_rgba", GNOME_CANVAS_COLOR (0, 0, 0),
            NULL);
    gnome_canvas_item_hide (day_view->drag_long_event_item);

    /*
     * Main Canvas
     */
    day_view->main_canvas = e_canvas_new ();
    gtk_table_attach (
        GTK_TABLE (day_view), day_view->main_canvas,
        1, 2, 1, 2,
        GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
    gtk_widget_show (day_view->main_canvas);
    g_signal_connect (
        day_view->main_canvas, "realize",
        G_CALLBACK (e_day_view_on_canvas_realized), day_view);

    g_signal_connect (
        day_view->main_canvas, "button_press_event",
        G_CALLBACK (e_day_view_on_main_canvas_button_press), day_view);
    g_signal_connect (
        day_view->main_canvas, "button_release_event",
        G_CALLBACK (e_day_view_on_main_canvas_button_release),
        day_view);
    g_signal_connect (
        day_view->main_canvas, "scroll_event",
        G_CALLBACK (e_day_view_on_main_canvas_scroll), day_view);
    g_signal_connect (
        day_view->main_canvas, "motion_notify_event",
        G_CALLBACK (e_day_view_on_main_canvas_motion), day_view);
    g_signal_connect (
        day_view->main_canvas, "drag_motion",
        G_CALLBACK (e_day_view_on_main_canvas_drag_motion), day_view);
    g_signal_connect (
        day_view->main_canvas, "drag_leave",
        G_CALLBACK (e_day_view_on_main_canvas_drag_leave), day_view);

    g_signal_connect (
        day_view->main_canvas, "drag_begin",
        G_CALLBACK (e_day_view_on_drag_begin), day_view);
    g_signal_connect (
        day_view->main_canvas, "drag_end",
        G_CALLBACK (e_day_view_on_drag_end), day_view);
    g_signal_connect (
        day_view->main_canvas, "drag_data_get",
        G_CALLBACK (e_day_view_on_drag_data_get), day_view);
    g_signal_connect (
        day_view->main_canvas, "drag_data_received",
        G_CALLBACK (e_day_view_on_main_canvas_drag_data_received), day_view);

    canvas_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->main_canvas)->root);

    day_view->main_canvas_item =
        gnome_canvas_item_new (
            canvas_group,
            e_day_view_main_item_get_type (),
            "EDayViewMainItem::day_view", day_view,
            NULL);

    day_view->drag_rect_item =
        gnome_canvas_item_new (
            canvas_group,
            gnome_canvas_rect_get_type (),
            "line_width", 1.0,
            NULL);
    gnome_canvas_item_hide (day_view->drag_rect_item);

    day_view->drag_bar_item =
        gnome_canvas_item_new (
            canvas_group,
            gnome_canvas_rect_get_type (),
            "line_width", 1.0,
            NULL);
    gnome_canvas_item_hide (day_view->drag_bar_item);

    day_view->drag_item =
        gnome_canvas_item_new (
            canvas_group,
            e_text_get_type (),
            "line_wrap", TRUE,
            "clip", TRUE,
            "editable", TRUE,
            "fill_color_rgba", GNOME_CANVAS_COLOR (0, 0, 0),
            NULL);
    gnome_canvas_item_hide (day_view->drag_item);

    /*
     * Times Canvas
     */
    day_view->time_canvas = e_canvas_new ();
    scrollable = GTK_SCROLLABLE (day_view->main_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);
    scrollable = GTK_SCROLLABLE (day_view->time_canvas);
    gtk_scrollable_set_vadjustment (scrollable, adjustment);
    gtk_table_attach (
        GTK_TABLE (day_view), day_view->time_canvas,
        0, 1, 1, 2,
        GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
    gtk_widget_show (day_view->time_canvas);
    g_signal_connect_after (
        day_view->time_canvas, "scroll_event",
        G_CALLBACK (e_day_view_on_time_canvas_scroll), day_view);

    canvas_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->time_canvas)->root);

    day_view->time_canvas_item =
        gnome_canvas_item_new (
            canvas_group,
            e_day_view_time_item_get_type (),
            "EDayViewTimeItem::day_view", day_view,
            NULL);

    /*
     * Scrollbar.
     */
    scrollable = GTK_SCROLLABLE (day_view->main_canvas);
    adjustment = gtk_scrollable_get_hadjustment (scrollable);
    day_view->mc_hscrollbar = gtk_scrollbar_new (
        GTK_ORIENTATION_HORIZONTAL, adjustment);
    gtk_table_attach (GTK_TABLE (day_view), day_view->mc_hscrollbar, 1, 2, 2, 3, GTK_FILL, 0, 0, 0);
    gtk_widget_show (day_view->mc_hscrollbar);

    scrollable = GTK_SCROLLABLE (day_view->top_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);
    day_view->tc_vscrollbar = gtk_scrollbar_new (
        GTK_ORIENTATION_VERTICAL, adjustment);
    gtk_table_attach (
        GTK_TABLE (day_view), day_view->tc_vscrollbar,
        2, 3, 0, 1, 0, GTK_FILL, 0, 0);
    /* gtk_widget_show (day_view->tc_vscrollbar); */

    scrollable = GTK_SCROLLABLE (day_view->main_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);
    day_view->vscrollbar = gtk_scrollbar_new (
        GTK_ORIENTATION_VERTICAL, adjustment);
    gtk_table_attach (
        GTK_TABLE (day_view), day_view->vscrollbar,
        2, 3, 1, 2, 0, GTK_EXPAND | GTK_FILL, 0, 0);
    gtk_widget_show (day_view->vscrollbar);

    /* Create the cursors. */
    day_view->normal_cursor = gdk_cursor_new (GDK_LEFT_PTR);
    day_view->move_cursor = gdk_cursor_new (GDK_FLEUR);
    day_view->resize_width_cursor = gdk_cursor_new (GDK_SB_H_DOUBLE_ARROW);
    day_view->resize_height_cursor = gdk_cursor_new (GDK_SB_V_DOUBLE_ARROW);
    day_view->last_cursor_set_in_top_canvas = NULL;
    day_view->last_cursor_set_in_main_canvas = NULL;

    /* Set up the drop sites. */
    gtk_drag_dest_set (
        day_view->top_canvas, GTK_DEST_DEFAULT_ALL,
        target_table, G_N_ELEMENTS (target_table),
        GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_ASK);

    e_drag_dest_add_calendar_targets (day_view->top_canvas);

    gtk_drag_dest_set (
        day_view->main_canvas, GTK_DEST_DEFAULT_ALL,
        target_table, G_N_ELEMENTS (target_table),
        GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_ASK);

    e_drag_dest_add_calendar_targets (day_view->main_canvas);

    day_view->requires_update = FALSE;
}

static void
time_range_changed_cb (ECalModel *model,
                       time_t start_time,
                       time_t end_time,
                       gpointer user_data)
{
    EDayView *day_view = E_DAY_VIEW (user_data);
    EDayViewTimeItem *eti;
    time_t lower;

    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    /* Calculate the first day that should be shown, based on start_time
     * and the days_shown setting. If we are showing 1 day it is just the
     * start of the day given by start_time, otherwise it is the previous
     * work-week start day. */
    if (!day_view->work_week_view) {
        lower = time_day_begin_with_zone (start_time, e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    } else {
        lower = e_day_view_find_work_week_start (day_view, start_time);
    }

    /* See if we need to change the days shown. */
    if (lower != day_view->lower)
        e_day_view_recalc_day_starts (day_view, lower);

    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    /* If we don't show the new selection, don't preserve it */
    if (day_view->selection_start_day == -1 || day_view->days_shown <= day_view->selection_start_day)
        day_view_set_selected_time_range (E_CALENDAR_VIEW (day_view), start_time, end_time);

    if (day_view->selection_start_row != -1)
        e_day_view_ensure_rows_visible (day_view, day_view->selection_start_row, day_view->selection_start_row);

    /* update the time canvas to show proper date in it */
    eti = E_DAY_VIEW_TIME_ITEM (day_view->time_canvas_item);
    if (eti && e_day_view_time_item_get_second_zone (eti))
        gtk_widget_queue_draw (day_view->time_canvas);
}

static void
process_component (EDayView *day_view,
                   ECalModelComponent *comp_data)
{
    const gchar *uid;
    gchar *rid = NULL;
    ECalModel *model;
    ECalComponent *comp;
    ESourceRegistry *registry;
    AddEventData add_event_data;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    registry = e_cal_model_get_registry (model);

    /* If our time hasn't been set yet, just return. */
    if (day_view->lower == 0 && day_view->upper == 0)
        return;

    comp = e_cal_component_new ();
    if (!e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (comp_data->icalcomp))) {
        g_object_unref (comp);

        g_message (G_STRLOC ": Could not set icalcomponent on ECalComponent");
        return;
    }

    e_cal_component_get_uid (comp, &uid);
    if (e_cal_component_is_instance (comp))
        rid = e_cal_component_get_recurid_as_string (comp);
    else
        rid = NULL;
    /* rid is never used below here, why? */

    /* Add the object */
    add_event_data.day_view = day_view;
    add_event_data.comp_data = comp_data;
    e_day_view_add_event (
        registry, comp, comp_data->instance_start,
        comp_data->instance_end, &add_event_data);

    g_object_unref (comp);
    g_free (rid);
}

static void
update_row (EDayView *day_view,
            gint row)
{
    ECalModelComponent *comp_data;
    ECalModel *model;
    gint day, event_num;
    const gchar *uid = NULL;
    gchar *rid = NULL;

    e_day_view_stop_editing_event (day_view);

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    comp_data = e_cal_model_get_component_at (model, row);
    g_return_if_fail (comp_data != NULL);

    uid = icalcomponent_get_uid (comp_data->icalcomp);
    if (e_cal_util_component_is_instance (comp_data->icalcomp)) {
        icalproperty *prop;

        prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_RECURRENCEID_PROPERTY);
        if (prop)
            rid = icaltime_as_ical_string_r (icalcomponent_get_recurrenceid (comp_data->icalcomp));
    }

    if (e_day_view_find_event_from_uid (day_view, comp_data->client, uid, rid, &day, &event_num))
        e_day_view_remove_event_cb (day_view, day, event_num, NULL);

    g_free (rid);

    process_component (day_view, comp_data);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
    e_day_view_queue_layout (day_view);
}

static void
model_row_changed_cb (ETableModel *etm,
                      gint row,
                      gpointer user_data)
{
    EDayView *day_view = E_DAY_VIEW (user_data);

    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    update_row (day_view, row);
}

static void
model_cell_changed_cb (ETableModel *etm,
                       gint col,
                       gint row,
                       gpointer user_data)
{
    EDayView *day_view = E_DAY_VIEW (user_data);

    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    update_row (day_view, row);
}

static void
model_rows_inserted_cb (ETableModel *etm,
                        gint row,
                        gint count,
                        gpointer user_data)
{
    EDayView *day_view = E_DAY_VIEW (user_data);
    ECalModel *model;
    gint i;

    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    e_day_view_stop_editing_event (day_view);

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    for (i = 0; i < count; i++) {
        ECalModelComponent *comp_data;

        comp_data = e_cal_model_get_component_at (model, row + i);
        if (comp_data == NULL) {
            g_warning ("comp_data is NULL\n");
            continue;
        }
        process_component (day_view, comp_data);
    }

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
    e_day_view_queue_layout (day_view);

}

static void
model_comps_deleted_cb (ETableModel *etm,
                        gpointer data,
                        gpointer user_data)
{
    EDayView *day_view = E_DAY_VIEW (user_data);
    GSList *l, *list = data;

    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    e_day_view_stop_editing_event (day_view);

    for (l = list; l != NULL; l = g_slist_next (l)) {
        ECalModelComponent *comp_data = l->data;
        gint day, event_num;
        const gchar *uid = NULL;
        gchar *rid = NULL;

        uid = icalcomponent_get_uid (comp_data->icalcomp);
        if (e_cal_util_component_is_instance (comp_data->icalcomp)) {
            icalproperty *prop;

            prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_RECURRENCEID_PROPERTY);
            if (prop)
                rid = icaltime_as_ical_string_r (icalcomponent_get_recurrenceid (comp_data->icalcomp));
        }

        if (e_day_view_find_event_from_uid (day_view, comp_data->client, uid, rid, &day, &event_num))
            e_day_view_remove_event_cb (day_view, day, event_num, NULL);

        g_free (rid);
    }

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
    e_day_view_queue_layout (day_view);
}

static void
timezone_changed_cb (ECalModel *cal_model,
                     icaltimezone *old_zone,
                     icaltimezone *new_zone,
                     gpointer user_data)
{
    struct icaltimetype tt;
    time_t lower;
    EDayView *day_view = (EDayView *) user_data;
    ECalendarView *cal_view = (ECalendarView *) day_view;

    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    if (!cal_view->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    /* If our time hasn't been set yet, just return. */
    if (day_view->lower == 0 && day_view->upper == 0)
        return;

    /* Recalculate the new start of the first day. We just use exactly
     * the same time, but with the new timezone. */
    tt = icaltime_from_timet_with_zone (
        day_view->lower, FALSE,
        old_zone);

    lower = icaltime_as_timet_with_zone (tt, new_zone);

    e_day_view_recalc_day_starts (day_view, lower);
    e_day_view_update_query (day_view);
}

static void
init_model (EDayView *day_view,
            ECalModel *model)
{
    /* connect to ECalModel's signals */
    g_signal_connect (
        model, "time_range_changed",
        G_CALLBACK (time_range_changed_cb), day_view);
    g_signal_connect (
        model, "model_row_changed",
        G_CALLBACK (model_row_changed_cb), day_view);
    g_signal_connect (
        model, "model_cell_changed",
        G_CALLBACK (model_cell_changed_cb), day_view);
    g_signal_connect (
        model, "model_rows_inserted",
        G_CALLBACK (model_rows_inserted_cb), day_view);
    g_signal_connect (
        model, "comps_deleted",
        G_CALLBACK (model_comps_deleted_cb), day_view);
    g_signal_connect (
        model, "timezone_changed",
        G_CALLBACK (timezone_changed_cb), day_view);
}

/* Turn off the background of the canvas windows. This reduces flicker
 * considerably when scrolling. (Why isn't it in GnomeCanvas?). */
static void
e_day_view_on_canvas_realized (GtkWidget *widget,
                               EDayView *day_view)
{
    GdkWindow *window;

    window = gtk_layout_get_bin_window (GTK_LAYOUT (widget));
    gdk_window_set_background_pattern (window, NULL);
}

/**
 * e_day_view_new:
 * @Returns: a new #EDayView.
 *
 * Creates a new #EDayView.
 **/
ECalendarView *
e_day_view_new (ECalModel *model)
{
    ECalendarView *day_view;

    g_return_val_if_fail (E_IS_CAL_MODEL (model), NULL);

    day_view = g_object_new (E_TYPE_DAY_VIEW, "model", model, NULL);
    init_model (E_DAY_VIEW (day_view), model);

    return day_view;
}

static void
e_day_view_set_colors (EDayView *day_view,
                       GtkWidget *widget)
{
    GtkStyle *style;

    style = gtk_widget_get_style (widget);

    day_view->colors[E_DAY_VIEW_COLOR_BG_WORKING] = style->base[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_BG_NOT_WORKING] = style->bg[GTK_STATE_ACTIVE];
    day_view->colors[E_DAY_VIEW_COLOR_BG_SELECTED] = style->base[GTK_STATE_SELECTED];
    day_view->colors[E_DAY_VIEW_COLOR_BG_SELECTED_UNFOCUSSED] = style->bg[GTK_STATE_SELECTED];
    day_view->colors[E_DAY_VIEW_COLOR_BG_GRID] = style->dark[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_BG_MULTIDAY_TODAY] = get_today_background (day_view->colors[E_DAY_VIEW_COLOR_BG_WORKING]);
    day_view->colors[E_DAY_VIEW_COLOR_BG_TOP_CANVAS] = style->dark[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_BG_TOP_CANVAS_SELECTED] = style->bg[GTK_STATE_SELECTED];
    day_view->colors[E_DAY_VIEW_COLOR_BG_TOP_CANVAS_GRID] = style->light[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_EVENT_VBAR] = style->base[GTK_STATE_SELECTED];
    day_view->colors[E_DAY_VIEW_COLOR_EVENT_BACKGROUND] = style->base[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_EVENT_BORDER] = style->dark[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_LONG_EVENT_BACKGROUND] = style->bg[GTK_STATE_ACTIVE];
    day_view->colors[E_DAY_VIEW_COLOR_LONG_EVENT_BORDER] = style->dark[GTK_STATE_NORMAL];
    day_view->colors[E_DAY_VIEW_COLOR_MARCUS_BAINS_LINE] = style->dark[GTK_STATE_PRELIGHT];
}

static void
e_day_view_update_top_scroll (EDayView *day_view,
                              gboolean scroll_to_top)
{
    GtkAllocation allocation;
    gint top_rows, top_canvas_height;
    gdouble old_x2, old_y2, new_x2, new_y2;

    /* Set the height of the top canvas based on the row height and the
     * number of rows needed (min 1 + 1 for the dates + 1 space for DnD).*/
    top_rows = MAX (1, day_view->rows_in_top_display);
    top_canvas_height = (top_rows + 1) * day_view->top_row_height;
    if (top_rows <= E_DAY_VIEW_MAX_ROWS_AT_TOP) {
        gtk_widget_set_size_request (day_view->top_canvas, -1, top_canvas_height);
        gtk_widget_hide (day_view->tc_vscrollbar);
    } else {
        gtk_widget_set_size_request (day_view->top_canvas, -1, (E_DAY_VIEW_MAX_ROWS_AT_TOP + 1) * day_view->top_row_height);
        gtk_widget_show (day_view->tc_vscrollbar);
    }

    /* Set the scroll region of the top canvas */
    gnome_canvas_get_scroll_region (
        GNOME_CANVAS (day_view->top_canvas),
        NULL, NULL, &old_x2, &old_y2);
    gtk_widget_get_allocation (day_view->top_canvas, &allocation);
    new_x2 = allocation.width - 1;
    new_y2 = (MAX (1, day_view->rows_in_top_display) + 1) * day_view->top_row_height - 1;
    if (old_x2 != new_x2 || old_y2 != new_y2) {
        gnome_canvas_set_scroll_region (
            GNOME_CANVAS (day_view->top_canvas),
            0, 0, new_x2, new_y2);

        if (scroll_to_top)
            gnome_canvas_scroll_to (GNOME_CANVAS (day_view->top_canvas), 0, 0);
    }
    new_y2 = day_view->top_row_height - 1 - 2;
    gnome_canvas_get_scroll_region (GNOME_CANVAS (day_view->top_dates_canvas), NULL, NULL, &old_x2, &old_y2);

    if (old_x2 != new_x2 || old_y2 != new_y2) {
        gnome_canvas_set_scroll_region (GNOME_CANVAS (day_view->top_dates_canvas), 0, 0, new_x2, new_y2);
        gnome_canvas_scroll_to (GNOME_CANVAS (day_view->top_dates_canvas), 0, 0);
    }
}

static void
e_day_view_recalc_cell_sizes (EDayView *day_view)
{
    /* An array of dates, one for each month in the year 2000. They must
     * all be Sundays. */
    static const gint days[12] = { 23, 20, 19, 23, 21, 18,
                      23, 20, 17, 22, 19, 24 };
    gfloat width, offset;
    gint day, max_width;
    struct tm date_tm;
    gchar buffer[128];
    GtkAllocation allocation;
    PangoContext *pango_context;
    PangoLayout *layout;
    gint pango_width;

    g_return_if_fail (gtk_widget_get_style (GTK_WIDGET (day_view)) != NULL);

    gtk_widget_get_allocation (day_view->main_canvas, &allocation);

    /* Set up Pango prerequisites */
    pango_context = gtk_widget_get_pango_context (GTK_WIDGET (day_view));
    layout = pango_layout_new (pango_context);

    /* Calculate the column sizes, using floating point so that pixels
     * get divided evenly. Note that we use one more element than the
     * number of columns, to make it easy to get the column widths. */
    width = allocation.width;
    if (day_view->days_shown == 1)
        width = MAX (width, day_view->max_cols * (E_DAY_VIEW_MIN_DAY_COL_WIDTH + E_DAY_VIEW_GAP_WIDTH) - E_DAY_VIEW_MIN_DAY_COL_WIDTH - 1);
    width /= day_view->days_shown;
    offset = 0;
    for (day = 0; day <= day_view->days_shown; day++) {
        day_view->day_offsets[day] = floor (offset + 0.5);
        offset += width;
    }

    /* Calculate the days widths based on the offsets. */
    for (day = 0; day < day_view->days_shown; day++) {
        day_view->day_widths[day] = day_view->day_offsets[day + 1] - day_view->day_offsets[day];
    }

    /* Determine which date format to use, based on the column widths.
     * We want to check the widths using the longest full or abbreviated
     * month name and the longest full or abbreviated weekday name, as
     * appropriate. */
    max_width = day_view->day_widths[0];

    memset (&date_tm, 0, sizeof (date_tm));
    date_tm.tm_year = 100;

    /* Try "Thursday 21 January". */
    date_tm.tm_mon = day_view->longest_month_name;
    date_tm.tm_mday = days[date_tm.tm_mon]
        + day_view->longest_weekday_name;
    date_tm.tm_wday = day_view->longest_weekday_name;
    date_tm.tm_isdst = -1;
    /* strftime format %A = full weekday name, %d = day of month,
     * %B = full month name. Don't use any other specifiers. */
    e_utf8_strftime (buffer, sizeof (buffer), _("%A %d %B"), &date_tm);
    pango_layout_set_text (layout, buffer, -1);
    pango_layout_get_pixel_size (layout, &pango_width, NULL);

    if (pango_width < max_width) {
        day_view->date_format = E_DAY_VIEW_DATE_FULL;
        goto exit;
    }

    /* Try "Thu 21 Jan". */
    date_tm.tm_mon = day_view->longest_abbreviated_month_name;
    date_tm.tm_mday = days[date_tm.tm_mon]
        + day_view->longest_abbreviated_weekday_name;
    date_tm.tm_wday = day_view->longest_abbreviated_weekday_name;
    date_tm.tm_isdst = -1;
    /* strftime format %a = abbreviated weekday name, %d = day of month,
     * %b = abbreviated month name. Don't use any other specifiers. */
    e_utf8_strftime (buffer, sizeof (buffer), _("%a %d %b"), &date_tm);
    pango_layout_set_text (layout, buffer, -1);
    pango_layout_get_pixel_size (layout, &pango_width, NULL);

    if (pango_width < max_width) {
        day_view->date_format = E_DAY_VIEW_DATE_ABBREVIATED;
        goto exit;
    }

    /* Try "23 Jan". */
    date_tm.tm_mon = day_view->longest_abbreviated_month_name;
    date_tm.tm_mday = 23;
    date_tm.tm_wday = 0;
    date_tm.tm_isdst = -1;
    /* strftime format %d = day of month, %b = abbreviated month name.
     * Don't use any other specifiers. */
    e_utf8_strftime (buffer, sizeof (buffer), _("%d %b"), &date_tm);
    pango_layout_set_text (layout, buffer, -1);
    pango_layout_get_pixel_size (layout, &pango_width, NULL);

    if (pango_width < max_width)
        day_view->date_format = E_DAY_VIEW_DATE_NO_WEEKDAY;
    else
        day_view->date_format = E_DAY_VIEW_DATE_SHORT;

exit:
    g_object_unref (layout);
}

/* This calls a given function for each event instance (in both views).
 * If the callback returns FALSE the iteration is stopped.
 * Note that it is safe for the callback to remove the event (since we
 * step backwards through the arrays). */
static void
e_day_view_foreach_event (EDayView *day_view,
                          EDayViewForeachEventCallback callback,
                          gpointer data)
{
    gint day, event_num;

    for (day = 0; day < day_view->days_shown; day++) {
        for (event_num = day_view->events[day]->len - 1;
             event_num >= 0;
             event_num--) {
            if (!(*callback) (day_view, day, event_num, data))
                return;
        }
    }

    for (event_num = day_view->long_events->len - 1;
         event_num >= 0;
         event_num--) {
        if (!(*callback) (day_view, E_DAY_VIEW_LONG_EVENT, event_num,
                  data))
            return;
    }
}

/* This calls a given function for each event instance that matches the given
 * uid. If the callback returns FALSE the iteration is stopped.
 * Note that it is safe for the callback to remove the event (since we
 * step backwards through the arrays). */
static void
e_day_view_foreach_event_with_uid (EDayView *day_view,
                                   const gchar *uid,
                                   EDayViewForeachEventCallback callback,
                                   gpointer data)
{
    EDayViewEvent *event;
    gint day, event_num;
    const gchar *u;

    if (!uid)
        return;

    for (day = 0; day < day_view->days_shown; day++) {
        for (event_num = day_view->events[day]->len - 1;
             event_num >= 0;
             event_num--) {
            event = &g_array_index (day_view->events[day],
                        EDayViewEvent, event_num);

            if (!is_comp_data_valid (event))
                continue;

            u = icalcomponent_get_uid (event->comp_data->icalcomp);
            if (u && !strcmp (uid, u)) {
                if (!(*callback) (day_view, day, event_num, data))
                    return;
            }
        }
    }

    for (event_num = day_view->long_events->len - 1;
         event_num >= 0;
         event_num--) {
        event = &g_array_index (day_view->long_events,
                    EDayViewEvent, event_num);

        if (!is_comp_data_valid (event))
            continue;

        u = icalcomponent_get_uid (event->comp_data->icalcomp);
        if (u && !strcmp (uid, u)) {
            if (!(*callback) (day_view, E_DAY_VIEW_LONG_EVENT, event_num, data))
                return;
        }
    }
}

static gboolean
e_day_view_remove_event_cb (EDayView *day_view,
                            gint day,
                            gint event_num,
                            gpointer data)
{
    EDayViewEvent *event;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return TRUE;

        event = &g_array_index (day_view->long_events,
                    EDayViewEvent, event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return TRUE;

        event = &g_array_index (day_view->events[day],
                    EDayViewEvent, event_num);
    }

    if (!event)
        return TRUE;

    /* If we were editing this event, set editing_event_day to -1 so
     * on_editing_stopped doesn't try to update the event. */
    if (day_view->editing_event_num == event_num && day_view->editing_event_day == day) {
        day_view->editing_event_num = -1;
        day_view->editing_event_day = -1;
    }

    if (day_view->popup_event_num == event_num && day_view->popup_event_day == day) {
        day_view->popup_event_num = -1;
        day_view->popup_event_day = -1;
    }

    if (event->canvas_item)
        g_object_run_dispose (G_OBJECT (event->canvas_item));

    if (is_comp_data_valid (event))
        g_object_unref (event->comp_data);
    event->comp_data = NULL;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        g_array_remove_index (day_view->long_events, event_num);
        day_view->long_events_need_layout = TRUE;
        gtk_widget_grab_focus (GTK_WIDGET (day_view->top_canvas));
    } else {
        g_array_remove_index (day_view->events[day], event_num);
        day_view->need_layout[day] = TRUE;
        gtk_widget_grab_focus (GTK_WIDGET (day_view->main_canvas));
    }
    return TRUE;
}

/* Checks if the users participation status is NEEDS-ACTION and shows the summary as bold text */
static void
set_text_as_bold (EDayViewEvent *event,
                  ESourceRegistry *registry)
{
    ECalComponent *comp;
    GSList *attendees = NULL, *l;
    gchar *address;
    ECalComponentAttendee *at = NULL;

    if (!is_comp_data_valid (event))
        return;

    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));
    address = itip_get_comp_attendee (
        registry, comp, event->comp_data->client);
    e_cal_component_get_attendee_list (comp, &attendees);
    for (l = attendees; l; l = l->next) {
        ECalComponentAttendee *attendee = l->data;

        if ((g_str_equal (itip_strip_mailto (attendee->value), address))
         || (attendee->sentby && g_str_equal (itip_strip_mailto (attendee->sentby), address))) {
            at = attendee;
            break;
        }
    }

    /* The attendee has not yet accepted the meeting, display the summary as bolded.
     * If the attendee is not present, it might have come through a mailing list.
     * In that case, we never show the meeting as bold even if it is unaccepted. */
    if (at && (at->status == ICAL_PARTSTAT_NEEDSACTION))
        gnome_canvas_item_set (event->canvas_item, "bold", TRUE, NULL);

    e_cal_component_free_attendee_list (attendees);
    g_free (address);
    g_object_unref (comp);
}

/* This updates the text shown for an event. If the event start or end do not
 * lie on a row boundary, the time is displayed before the summary. */
static void
e_day_view_update_event_label (EDayView *day_view,
                               gint day,
                               gint event_num)
{
    EDayViewEvent *event;
    ECalendarView *cal_view;
    ESourceRegistry *registry;
    ECalModel *model;
    gboolean free_text = FALSE, editing_event = FALSE, short_event = FALSE;
    const gchar *summary;
    gchar *text;
    gint time_divisions;
    gint interval;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent, event_num);

    /* If the event isn't visible just return. */
    if (!event->canvas_item || !is_comp_data_valid (event))
        return;

    summary = icalcomponent_get_summary (event->comp_data->icalcomp);
    text = summary ? (gchar *) summary : (gchar *) "";

    if (day_view->editing_event_day == day
        && day_view->editing_event_num == event_num)
        editing_event = TRUE;

    interval = event->end_minute - event->start_minute;

    cal_view = E_CALENDAR_VIEW (day_view);
    model = e_calendar_view_get_model (cal_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    registry = e_cal_model_get_registry (model);

    if ((interval / time_divisions) >= 2)
        short_event = FALSE;
    else if ((interval % time_divisions) == 0) {
        if (((event->end_minute % time_divisions) == 0) ||
            ((event->start_minute % time_divisions) == 0)) {
            short_event = TRUE;
        }
    } else
        short_event = FALSE;

    if (!editing_event) {
        if (!short_event) {
            const gchar *location = icalcomponent_get_location (event->comp_data->icalcomp);

            if (location && *location)
                text = g_strdup_printf (" \n%s%c(%s)", text, day_view->days_shown == 1 ? ' ' : '\n', location);
            else
                text = g_strdup_printf (" \n%s", text);

            free_text = TRUE;
        }
    }

    gnome_canvas_item_set (
        event->canvas_item,
        "text", text,
        NULL);

    if (e_client_check_capability (E_CLIENT (event->comp_data->client), CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
                && e_cal_util_component_has_attendee (event->comp_data->icalcomp))
        set_text_as_bold (event, registry);

    if (free_text)
        g_free (text);
}

static void
e_day_view_update_long_event_label (EDayView *day_view,
                                    gint event_num)
{
    EDayViewEvent *event;
    ECalendarView *cal_view;
    ECalModel *model;
    ESourceRegistry *registry;
    const gchar *summary;
    gboolean free_text = FALSE;

    cal_view = E_CALENDAR_VIEW (day_view);
    model = e_calendar_view_get_model (cal_view);

    registry = e_cal_model_get_registry (model);

    if (!is_array_index_in_bounds (day_view->long_events, event_num))
        return;

    event = &g_array_index (day_view->long_events, EDayViewEvent,
                event_num);

    /* If the event isn't visible just return. */
    if (!event->canvas_item || !is_comp_data_valid (event))
        return;

    summary = e_calendar_view_get_icalcomponent_summary (event->comp_data->client, event->comp_data->icalcomp, &free_text);

    gnome_canvas_item_set (
        event->canvas_item,
        "text", summary ? summary : "",
        NULL);

    if (free_text)
        g_free ((gchar *) summary);

    if (e_client_check_capability (E_CLIENT (event->comp_data->client), CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
                && e_cal_util_component_has_attendee (event->comp_data->icalcomp))
        set_text_as_bold (event, registry);
}

/* Finds the day and index of the event with the given canvas item.
 * If is is a long event, -1 is returned as the day.
 * Returns TRUE if the event was found. */
gboolean
e_day_view_find_event_from_item (EDayView *day_view,
                                 GnomeCanvasItem *item,
                                 gint *day_return,
                                 gint *event_num_return)
{
    EDayViewEvent *event;
    gint day, event_num;

    for (day = 0; day < day_view->days_shown; day++) {
        for (event_num = 0; event_num < day_view->events[day]->len;
             event_num++) {
            event = &g_array_index (day_view->events[day],
                        EDayViewEvent, event_num);
            if (event->canvas_item == item) {
                *day_return = day;
                *event_num_return = event_num;
                return TRUE;
            }
        }
    }

    for (event_num = 0; event_num < day_view->long_events->len;
         event_num++) {
        event = &g_array_index (day_view->long_events,
                    EDayViewEvent, event_num);
        if (event->canvas_item == item) {
            *day_return = E_DAY_VIEW_LONG_EVENT;
            *event_num_return = event_num;
            return TRUE;
        }
    }

    return FALSE;
}

/* Finds the day and index of the event with the given uid.
 * If is is a long event, E_DAY_VIEW_LONG_EVENT is returned as the day.
 * Returns TRUE if an event with the uid was found.
 * Note that for recurring events there may be several EDayViewEvents, one
 * for each instance, all with the same iCalObject and uid. So only use this
 * function if you know the event doesn't recur or you are just checking to
 * see if any events with the uid exist. */
static gboolean
e_day_view_find_event_from_uid (EDayView *day_view,
                                ECalClient *client,
                                const gchar *uid,
                                const gchar *rid,
                                gint *day_return,
                                gint *event_num_return)
{
    EDayViewEvent *event;
    gint day, event_num;
    const gchar *u;
    gchar *r = NULL;

    if (!uid)
        return FALSE;

    for (day = 0; day < day_view->days_shown; day++) {
        for (event_num = 0; event_num < day_view->events[day]->len;
             event_num++) {
            event = &g_array_index (day_view->events[day],
                        EDayViewEvent, event_num);

            if (!is_comp_data_valid (event))
                continue;

            if (event->comp_data->client != client)
                continue;

            u = icalcomponent_get_uid (event->comp_data->icalcomp);
            if (u && !strcmp (uid, u)) {
                if (rid && *rid) {
                    r = icaltime_as_ical_string_r (icalcomponent_get_recurrenceid (event->comp_data->icalcomp));
                    if (!r || !*r)
                        continue;
                    if (strcmp (rid, r) != 0) {
                        g_free (r);
                        continue;
                    }
                    g_free (r);
                }

                *day_return = day;
                *event_num_return = event_num;
                return TRUE;
            }
        }
    }

    for (event_num = 0; event_num < day_view->long_events->len;
         event_num++) {
        event = &g_array_index (day_view->long_events,
                    EDayViewEvent, event_num);

        if (!is_comp_data_valid (event))
            continue;

        if (event->comp_data->client != client)
            continue;

        u = icalcomponent_get_uid (event->comp_data->icalcomp);
        if (u && !strcmp (uid, u)) {
            *day_return = E_DAY_VIEW_LONG_EVENT;
            *event_num_return = event_num;
            return TRUE;
        }
    }

    return FALSE;
}

static void
e_day_view_set_selected_time_range_in_top_visible (EDayView *day_view,
                                                   time_t start_time,
                                                   time_t end_time)
{
    gint start_row, start_col, end_row, end_col;
    gboolean need_redraw = FALSE, start_in_grid, end_in_grid;

    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    /* Set the selection. */
    start_in_grid = e_day_view_convert_time_to_grid_position (
        day_view,
        start_time,
        &start_col,
        &start_row);
    end_in_grid = e_day_view_convert_time_to_grid_position (
        day_view,
        end_time - 60,
        &end_col,
        &end_row);

    if (!start_in_grid)
        start_col = 0;
    if (!end_in_grid)
        end_col = day_view->days_shown - 1;

    if (start_row != day_view->selection_start_row
        || start_col != day_view->selection_start_day) {
        need_redraw = TRUE;
        day_view->selection_in_top_canvas = TRUE;
        day_view->selection_start_row = -1;
        day_view->selection_start_day = start_col;
    }

    if (end_row != day_view->selection_end_row
        || end_col != day_view->selection_end_day) {
        need_redraw = TRUE;
        day_view->selection_in_top_canvas = TRUE;
        day_view->selection_end_row = -1;
        day_view->selection_end_day = end_col;
    }

    if (need_redraw) {
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->top_dates_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
}

static void
e_day_view_set_selected_time_range_visible (EDayView *day_view,
                                            time_t start_time,
                                            time_t end_time)
{
    ECalModel *model;
    gint work_day_start_hour;
    gint work_day_start_minute;
    gint start_row, start_col, end_row, end_col;
    gboolean need_redraw = FALSE, start_in_grid, end_in_grid;

    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    work_day_start_hour = e_cal_model_get_work_day_start_hour (model);
    work_day_start_minute = e_cal_model_get_work_day_start_minute (model);

    /* Set the selection. */
    start_in_grid = e_day_view_convert_time_to_grid_position (
        day_view,
        start_time,
        &start_col,
        &start_row);
    end_in_grid = e_day_view_convert_time_to_grid_position (
        day_view,
                                end_time - 60,
                                &end_col,
                                &end_row);

    /* If either of the times isn't in the grid, or the selection covers
     * an entire day, we set the selection to 1 row from the start of the
     * working day, in the day corresponding to the start time. */
    if (!start_in_grid || !end_in_grid
        || (start_row == 0 && end_row == day_view->rows - 1)) {
        end_col = start_col;

        start_row = e_day_view_convert_time_to_row (
            day_view, work_day_start_hour, work_day_start_minute);
        start_row = CLAMP (start_row, 0, day_view->rows - 1);
        end_row = start_row;
    }

    if (start_row != day_view->selection_start_row
        || start_col != day_view->selection_start_day) {
        need_redraw = TRUE;
        day_view->selection_in_top_canvas = FALSE;
        day_view->selection_start_row = start_row;
        day_view->selection_start_day = start_col;
    }

    if (end_row != day_view->selection_end_row
        || end_col != day_view->selection_end_day) {
        need_redraw = TRUE;
        day_view->selection_in_top_canvas = FALSE;
        day_view->selection_end_row = end_row;
        day_view->selection_end_day = end_col;
    }

    if (need_redraw) {
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->top_dates_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
}

/* Finds the start of the working week which includes the given time. */
static time_t
e_day_view_find_work_week_start (EDayView *day_view,
                                 time_t start_time)
{
    GDate date;
    ECalModel *model;
    guint offset;
    GDateWeekday weekday;
    GDateWeekday first_work_day;
    struct icaltimetype tt = icaltime_null_time ();
    icaltimezone *zone;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    zone = e_cal_model_get_timezone (model);

    time_to_gdate_with_zone (&date, start_time, zone);

    /* The start of the work-week is the first working day after the
     * week start day. */

    /* Get the weekday corresponding to start_time. */
    weekday = g_date_get_weekday (&date);

    /* Calculate the first working day of the week. */
    first_work_day = e_cal_model_get_work_day_first (model);
    if (first_work_day == G_DATE_BAD_WEEKDAY)
        first_work_day = e_cal_model_get_week_start_day (model) + 1;

    /* Calculate how many days we need to go back to the first workday. */
    if (weekday < first_work_day)
        offset = (weekday + 7) - first_work_day;
    else
        offset = weekday - first_work_day;

    if (offset > 0)
        g_date_subtract_days (&date, offset);

    tt.year = g_date_get_year (&date);
    tt.month = g_date_get_month (&date);
    tt.day = g_date_get_day (&date);

    return icaltime_as_timet_with_zone (tt, zone);
}

static void
e_day_view_recalc_day_starts (EDayView *day_view,
                              time_t start_time)
{
    gint day;
    gchar *str;
    struct icaltimetype tt;
    GDate dt;

    day_view->day_starts[0] = start_time;
    for (day = 1; day <= day_view->days_shown; day++) {
        day_view->day_starts[day] = time_add_day_with_zone (day_view->day_starts[day - 1], 1, e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    }

    day_view->lower = start_time;
    day_view->upper = day_view->day_starts[day_view->days_shown];

    tt = icaltime_from_timet_with_zone (day_view->day_starts[0], FALSE, e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    g_date_clear (&dt, 1);
    g_date_set_dmy (&dt, tt.day, tt.month, tt.year);
    /* To Translators: the %d stands for a week number, it's value between 1 and 52/53 */
    str = g_strdup_printf (_("Week %d"), g_date_get_iso8601_week_of_year (&dt));
    gtk_label_set_text (GTK_LABEL (day_view->week_number_label), str);
    g_free (str);

    if (day_view->work_week_view)
        e_day_view_recalc_work_week (day_view);
}

/* Whether we are displaying a work-week, in which case the display always
 * starts on the first day of the working week. */
gboolean
e_day_view_get_work_week_view (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), FALSE);

    return day_view->work_week_view;
}

void
e_day_view_set_work_week_view (EDayView *day_view,
                               gboolean work_week_view)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    if (day_view->work_week_view == work_week_view)
        return;

    day_view->work_week_view = work_week_view;

    if (day_view->work_week_view)
        e_day_view_recalc_work_week (day_view);
}

gint
e_day_view_get_days_shown (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), -1);

    return day_view->days_shown;
}

void
e_day_view_set_days_shown (EDayView *day_view,
                           gint days_shown)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));
    g_return_if_fail (days_shown >= 1);
    g_return_if_fail (days_shown <= E_DAY_VIEW_MAX_DAYS);

    if (day_view->days_shown == days_shown)
        return;

    day_view->days_shown = days_shown;

    /* If the date isn't set, just return. */
    if (day_view->lower == 0 && day_view->upper == 0)
        return;

    e_day_view_recalc_day_starts (day_view, day_view->lower);
    e_day_view_recalc_cell_sizes (day_view);

    e_day_view_update_query (day_view);
}

static void
e_day_view_recalc_work_week_days_shown (EDayView *day_view)
{
    ECalModel *model;
    GDateWeekday first_work_day;
    GDateWeekday last_work_day;
    gint days_shown;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));

    /* Find the first working day in the week. */
    first_work_day = e_cal_model_get_work_day_first (model);

    if (first_work_day != G_DATE_BAD_WEEKDAY) {
        last_work_day = e_cal_model_get_work_day_last (model);

        /* Now calculate the days we need to show to include all the
         * working days in the week. Add 1 to make it inclusive. */
        days_shown = e_weekday_get_days_between (
            first_work_day, last_work_day) + 1;
    } else {
        /* If no working days are set, just use 7. */
        days_shown = 7;
    }

    e_day_view_set_days_shown (day_view, days_shown);
}

/* Force a redraw of the Marcus Bains Lines */
void
e_day_view_marcus_bains_update (EDayView *day_view)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));
    gtk_widget_queue_draw (day_view->main_canvas);
    gtk_widget_queue_draw (day_view->time_canvas);
}

gboolean
e_day_view_marcus_bains_get_show_line (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), FALSE);

    return day_view->marcus_bains_show_line;
}

void
e_day_view_marcus_bains_set_show_line (EDayView *day_view,
                                       gboolean show_line)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    if (day_view->marcus_bains_show_line == show_line)
        return;

    day_view->marcus_bains_show_line = show_line;

    e_day_view_marcus_bains_update (day_view);

    g_object_notify (G_OBJECT (day_view), "marcus-bains-show-line");
}

const gchar *
e_day_view_marcus_bains_get_day_view_color (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), NULL);

    return day_view->marcus_bains_day_view_color;
}

void
e_day_view_marcus_bains_set_day_view_color (EDayView *day_view,
                                            const gchar *day_view_color)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    if (g_strcmp0 (day_view->marcus_bains_day_view_color, day_view_color) == 0)
        return;

    g_free (day_view->marcus_bains_day_view_color);
    day_view->marcus_bains_day_view_color = g_strdup (day_view_color);

    e_day_view_marcus_bains_update (day_view);

    g_object_notify (G_OBJECT (day_view), "marcus-bains-day-view-color");
}

const gchar *
e_day_view_marcus_bains_get_time_bar_color (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), NULL);

    return day_view->marcus_bains_time_bar_color;
}

void
e_day_view_marcus_bains_set_time_bar_color (EDayView *day_view,
                                            const gchar *time_bar_color)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    if (g_strcmp0 (day_view->marcus_bains_time_bar_color, time_bar_color) == 0)
        return;

    g_free (day_view->marcus_bains_time_bar_color);
    day_view->marcus_bains_time_bar_color = g_strdup (time_bar_color);

    e_day_view_marcus_bains_update (day_view);

    g_object_notify (G_OBJECT (day_view), "marcus-bains-time-bar-color");
}

/* Whether we display event end times in the main canvas. */
gboolean
e_day_view_get_show_event_end_times (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), TRUE);

    return day_view->show_event_end_times;
}

void
e_day_view_set_show_event_end_times (EDayView *day_view,
                                     gboolean show)
{
    g_return_if_fail (E_IS_DAY_VIEW (day_view));

    if (day_view->show_event_end_times != show) {
        day_view->show_event_end_times = show;
        e_day_view_foreach_event (day_view,
                      e_day_view_set_show_times_cb, NULL);
    }
}

/* This is a callback used to update all day event labels. */
static gboolean
e_day_view_set_show_times_cb (EDayView *day_view,
                              gint day,
                              gint event_num,
                              gpointer data)
{
    if (day != E_DAY_VIEW_LONG_EVENT) {
        e_day_view_update_event_label (day_view, day, event_num);
    }

    return TRUE;
}

static void
e_day_view_recalc_work_week (EDayView *day_view)
{
    time_t lower;

    /* If we aren't showing the work week, just return. */
    if (!day_view->work_week_view)
        return;

    e_day_view_recalc_work_week_days_shown (day_view);

    /* If the date isn't set, just return. */
    if (day_view->lower == 0 && day_view->upper == 0)
        return;

    lower = e_day_view_find_work_week_start (day_view, day_view->lower);
    if (lower != day_view->lower) {
        /* Reset the selection, as it may disappear. */
        day_view->selection_start_day = -1;

        e_day_view_recalc_day_starts (day_view, lower);
        e_day_view_update_query (day_view);

        /* This updates the date navigator. */
        e_day_view_update_calendar_selection_time (day_view);
    }
}

static gboolean
e_day_view_update_scroll_regions (EDayView *day_view)
{
    GtkAllocation main_canvas_allocation;
    GtkAllocation time_canvas_allocation;
    gdouble old_x2, old_y2, new_x2, new_y2;
    gboolean need_reshape = FALSE;

    gtk_widget_get_allocation (
        day_view->main_canvas, &main_canvas_allocation);
    gtk_widget_get_allocation (
        day_view->time_canvas, &time_canvas_allocation);

    /* Set the scroll region of the time canvas to its allocated width,
     * but with the height the same as the main canvas. */
    gnome_canvas_get_scroll_region (
        GNOME_CANVAS (day_view->time_canvas),
        NULL, NULL, &old_x2, &old_y2);
    new_x2 = time_canvas_allocation.width - 1;
    new_y2 = MAX (
        day_view->rows * day_view->row_height,
        main_canvas_allocation.height) - 1;
    if (old_x2 != new_x2 || old_y2 != new_y2)
        gnome_canvas_set_scroll_region (GNOME_CANVAS (day_view->time_canvas),
                        0, 0, new_x2, new_y2);

    /* Set the scroll region of the main canvas to its allocated width,
     * but with the height depending on the number of rows needed. */
    gnome_canvas_get_scroll_region (
        GNOME_CANVAS (day_view->main_canvas),
        NULL, NULL, &old_x2, &old_y2);
    new_x2 = main_canvas_allocation.width - 1;

    if (day_view->days_shown == 1)
        new_x2 = MAX (new_x2, day_view->max_cols * (E_DAY_VIEW_MIN_DAY_COL_WIDTH + E_DAY_VIEW_GAP_WIDTH) - E_DAY_VIEW_MIN_DAY_COL_WIDTH - 1);

    if (old_x2 != new_x2 || old_y2 != new_y2) {
        need_reshape = TRUE;
        gnome_canvas_set_scroll_region (
            GNOME_CANVAS (day_view->main_canvas),
            0, 0, new_x2, new_y2);
    }

    if (new_x2 <= main_canvas_allocation.width - 1)
        gtk_widget_hide (day_view->mc_hscrollbar);
    else
        gtk_widget_show (day_view->mc_hscrollbar);

    return need_reshape;
}

/* This recalculates the number of rows to display, based on the time range
 * shown and the minutes per row. */
static void
e_day_view_recalc_num_rows (EDayView *day_view)
{
    ECalendarView *cal_view;
    gint time_divisions;
    gint hours, minutes, total_minutes;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    hours = day_view->last_hour_shown - day_view->first_hour_shown;
    /* This could be negative but it works out OK. */
    minutes = day_view->last_minute_shown - day_view->first_minute_shown;
    total_minutes = hours * 60 + minutes;
    day_view->rows = total_minutes / time_divisions;
}

/* Converts an hour and minute to a row in the canvas. Note that if we aren't
 * showing all 24 hours of the day, the returned row may be negative or
 * greater than day_view->rows. */
gint
e_day_view_convert_time_to_row (EDayView *day_view,
                                gint hour,
                                gint minute)
{
    ECalendarView *cal_view;
    gint time_divisions;
    gint total_minutes, start_minute, offset;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    total_minutes = hour * 60 + minute;
    start_minute = day_view->first_hour_shown * 60
        + day_view->first_minute_shown;
    offset = total_minutes - start_minute;
    if (offset < 0)
        return -1;
    else
        return offset / time_divisions;
}

/* Converts an hour and minute to a y coordinate in the canvas. */
gint
e_day_view_convert_time_to_position (EDayView *day_view,
                                     gint hour,
                                     gint minute)
{
    ECalendarView *cal_view;
    gint time_divisions;
    gint total_minutes, start_minute, offset;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    total_minutes = hour * 60 + minute;
    start_minute = day_view->first_hour_shown * 60
        + day_view->first_minute_shown;
    offset = total_minutes - start_minute;

    return offset * day_view->row_height / time_divisions;
}

static gboolean
e_day_view_on_top_canvas_button_press (GtkWidget *widget,
                                       GdkEvent *button_event,
                                       EDayView *day_view)
{
    gint event_x, event_y, day, event_num;
    ECalendarViewPosition pos;
    GtkLayout *layout;
    GdkWindow *window;
    GdkDevice *event_device;
    guint event_button = 0;
    guint32 event_time;

    layout = GTK_LAYOUT (widget);
    window = gtk_layout_get_bin_window (layout);

    gdk_event_get_button (button_event, &event_button);
    event_device = gdk_event_get_device (button_event);
    event_time = gdk_event_get_time (button_event);

    if (day_view->resize_event_num != -1)
        day_view->resize_event_num = -1;

    if (day_view->drag_event_num != -1)
        day_view->drag_event_num = -1;

    /* Convert the coords to the main canvas window, or return if the
     * window is not found. */
    if (!e_day_view_convert_event_coords (
        day_view, button_event, window, &event_x, &event_y))
        return FALSE;

    pos = e_day_view_convert_position_in_top_canvas (
        day_view,
        event_x, event_y,
        &day, &event_num);

    if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
        return FALSE;

    if (pos != E_CALENDAR_VIEW_POS_NONE)
        return e_day_view_on_long_event_button_press (
            day_view,
            event_num,
            button_event,
            pos,
            event_x,
            event_y);

    e_day_view_stop_editing_event (day_view);

    if (event_button == 1) {
        GdkGrabStatus grab_status;

        if (button_event->type == GDK_2BUTTON_PRESS) {
            time_t dtstart, dtend;

            day_view_get_selected_time_range ((ECalendarView *) day_view, &dtstart, &dtend);
            if (dtstart < day_view->before_click_dtend && dtend > day_view->before_click_dtstart) {
                dtstart = day_view->before_click_dtstart;
                dtend = day_view->before_click_dtend;
                day_view_set_selected_time_range ((ECalendarView *) day_view, dtstart, dtend);
            }

            e_calendar_view_new_appointment_for (
                E_CALENDAR_VIEW (day_view),
                dtstart, dtend, TRUE,
                calendar_config_get_prefer_meeting ());
            return TRUE;
        }

        if (!gtk_widget_has_focus (GTK_WIDGET (day_view)))
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

        grab_status = gdk_device_grab (
            event_device,
            window,
            GDK_OWNERSHIP_NONE,
            FALSE,
            GDK_POINTER_MOTION_MASK |
            GDK_BUTTON_RELEASE_MASK,
            NULL,
            event_time);

        if (grab_status == GDK_GRAB_SUCCESS) {
            g_warn_if_fail (day_view->grabbed_pointer == NULL);
            day_view->grabbed_pointer = g_object_ref (event_device);

            if (event_time - day_view->bc_event_time > 250)
                day_view_get_selected_time_range (
                    E_CALENDAR_VIEW (day_view),
                    &day_view->before_click_dtstart,
                    &day_view->before_click_dtend);
            day_view->bc_event_time = event_time;
            e_day_view_start_selection (day_view, day, -1);
        }
    } else if (event_button == 3) {
        if (!gtk_widget_has_focus (GTK_WIDGET (day_view)))
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

        if (day < day_view->selection_start_day || day > day_view->selection_end_day) {
            e_day_view_start_selection (day_view, day, -1);
            e_day_view_finish_selection (day_view);
        }

        e_day_view_on_event_right_click (day_view, button_event, -1, -1);
    }

    return TRUE;
}

static gboolean
e_day_view_convert_event_coords (EDayView *day_view,
                                 GdkEvent *event,
                                 GdkWindow *window,
                                 gint *x_return,
                                 gint *y_return)
{
    gint event_x, event_y, win_x, win_y;
    GdkWindow *event_window;;

    /* Get the event window, x & y from the appropriate event struct. */
    switch (event->type) {
    case GDK_BUTTON_PRESS:
    case GDK_2BUTTON_PRESS:
    case GDK_3BUTTON_PRESS:
    case GDK_BUTTON_RELEASE:
        event_x = event->button.x;
        event_y = event->button.y;
        event_window = event->button.window;
        break;
    case GDK_MOTION_NOTIFY:
        event_x = event->motion.x;
        event_y = event->motion.y;
        event_window = event->motion.window;
        break;
    case GDK_ENTER_NOTIFY:
    case GDK_LEAVE_NOTIFY:
        event_x = event->crossing.x;
        event_y = event->crossing.y;
        event_window = event->crossing.window;
        break;
    default:
        /* Shouldn't get here. */
        g_return_val_if_reached (FALSE);
    }

    while (event_window && event_window != window
           && event_window != gdk_get_default_root_window ()) {
        gdk_window_get_position (event_window, &win_x, &win_y);
        event_x += win_x;
        event_y += win_y;
        event_window = gdk_window_get_parent (event_window);
    }

    *x_return = event_x;
    *y_return = event_y;

    return (event_window == window) ? TRUE : FALSE;
}

static gboolean
e_day_view_on_main_canvas_button_press (GtkWidget *widget,
                                        GdkEvent *button_event,
                                        EDayView *day_view)
{
    gint event_x, event_y, row, day, event_num;
    ECalendarViewPosition pos;
    GtkLayout *layout;
    GdkWindow *window;
    GdkDevice *event_device;
    guint event_button = 0;
    guint32 event_time;

    layout = GTK_LAYOUT (widget);
    window = gtk_layout_get_bin_window (layout);

    gdk_event_get_button (button_event, &event_button);
    event_device = gdk_event_get_device (button_event);
    event_time = gdk_event_get_time (button_event);

    if (day_view->resize_event_num != -1)
        day_view->resize_event_num = -1;

    if (day_view->drag_event_num != -1)
        day_view->drag_event_num = -1;

    /* Convert the coords to the main canvas window, or return if the
     * window is not found. */
    if (!e_day_view_convert_event_coords (
        day_view, button_event, window, &event_x, &event_y))
        return FALSE;

    /* Find out where the mouse is. */
    pos = e_day_view_convert_position_in_main_canvas (
        day_view,
        event_x, event_y,
        &day, &row,
        &event_num);

    if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
        return FALSE;

    if (pos != E_CALENDAR_VIEW_POS_NONE)
        return e_day_view_on_event_button_press (
            day_view,
            day,
            event_num,
            button_event,
            pos,
            event_x,
            event_y);

    e_day_view_stop_editing_event (day_view);

    /* Start the selection drag. */
    if (event_button == 1) {
        GdkGrabStatus grab_status;

        if (button_event->type == GDK_2BUTTON_PRESS) {
            time_t dtstart, dtend;

            day_view_get_selected_time_range ((ECalendarView *) day_view, &dtstart, &dtend);
            if (dtstart < day_view->before_click_dtend && dtend > day_view->before_click_dtstart) {
                dtstart = day_view->before_click_dtstart;
                dtend = day_view->before_click_dtend;
                day_view_set_selected_time_range ((ECalendarView *) day_view, dtstart, dtend);
            }
            e_calendar_view_new_appointment_for (
                E_CALENDAR_VIEW (day_view),
                dtstart, dtend, FALSE,
                calendar_config_get_prefer_meeting ());
            return TRUE;
        }

        if (!gtk_widget_has_focus (GTK_WIDGET (day_view)) && !gtk_widget_has_focus (GTK_WIDGET (day_view->main_canvas)))
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

        grab_status = gdk_device_grab (
            event_device,
            window,
            GDK_OWNERSHIP_NONE,
            FALSE,
            GDK_POINTER_MOTION_MASK |
            GDK_BUTTON_RELEASE_MASK,
            NULL,
            event_time);

        if (grab_status == GDK_GRAB_SUCCESS) {
            g_warn_if_fail (day_view->grabbed_pointer == NULL);
            day_view->grabbed_pointer = g_object_ref (event_device);

            if (event_time - day_view->bc_event_time > 250)
                day_view_get_selected_time_range (
                    E_CALENDAR_VIEW (day_view),
                    &day_view->before_click_dtstart,
                    &day_view->before_click_dtend);
            day_view->bc_event_time = event_time;
            e_day_view_start_selection (day_view, day, row);
            g_signal_emit_by_name (day_view, "selected_time_changed");
        }
    } else if (event_button == 3) {
        if (!gtk_widget_has_focus (GTK_WIDGET (day_view)))
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

        if ((day < day_view->selection_start_day || day > day_view->selection_end_day)
            || (day == day_view->selection_start_day && row < day_view->selection_start_row)
            || (day == day_view->selection_end_day && row > day_view->selection_end_row)) {
            e_day_view_start_selection (day_view, day, row);
            e_day_view_finish_selection (day_view);
        }

        e_day_view_on_event_right_click (day_view, button_event, -1, -1);
    }

    return TRUE;
}

static gboolean
e_day_view_on_main_canvas_scroll (GtkWidget *widget,
                                  GdkEventScroll *scroll,
                                  EDayView *day_view)
{
    switch (scroll->direction) {
    case GDK_SCROLL_UP:
        e_day_view_scroll (day_view, E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
        return TRUE;
    case GDK_SCROLL_DOWN:
        e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
        return TRUE;
    case GDK_SCROLL_SMOOTH:
        if (scroll->delta_y < -0.001 || scroll->delta_y > 0.001) {
            e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE * scroll->delta_y);
            return TRUE;
        }
        break;
    default:
        break;
    }

    return FALSE;
}

static gboolean
e_day_view_on_top_canvas_scroll (GtkWidget *widget,
                                  GdkEventScroll *scroll,
                                  EDayView *day_view)
{
    switch (scroll->direction) {
    case GDK_SCROLL_UP:
        e_day_view_top_scroll (day_view, E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
        return TRUE;
    case GDK_SCROLL_DOWN:
        e_day_view_top_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
        return TRUE;
    case GDK_SCROLL_SMOOTH:
        if (scroll->delta_y < -0.001 || scroll->delta_y > 0.001) {
            e_day_view_top_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE * scroll->delta_y);
            return TRUE;
        }
        break;
    default:
        break;
    }

    return FALSE;
}

static gboolean
e_day_view_on_time_canvas_scroll (GtkWidget *widget,
                                  GdkEventScroll *scroll,
                                  EDayView *day_view)
{
    GtkWidget *tool_window = g_object_get_data ((GObject *) day_view, "tooltip-window");

    if (tool_window) {
        gtk_widget_destroy (tool_window);
        g_object_set_data (G_OBJECT (day_view), "tooltip-window", NULL);
    }

    switch (scroll->direction) {
    case GDK_SCROLL_UP:
        e_day_view_scroll (day_view, E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
        return TRUE;
    case GDK_SCROLL_DOWN:
        e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
        return TRUE;
    case GDK_SCROLL_SMOOTH:
        if (scroll->delta_y < -0.001 || scroll->delta_y > 0.001) {
            e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE * scroll->delta_y);
            return TRUE;
        }
        break;
    default:
        break;
    }

    return FALSE;
}

static gboolean
e_day_view_on_long_event_button_press (EDayView *day_view,
                                       gint event_num,
                                       GdkEvent *button_event,
                                       ECalendarViewPosition pos,
                                       gint event_x,
                                       gint event_y)
{
    guint event_button = 0;

    gdk_event_get_button (button_event, &event_button);

    if (event_button == 1) {
        if (button_event->type == GDK_BUTTON_PRESS) {
            e_day_view_on_long_event_click (
                day_view, event_num,
                button_event, pos,
                event_x, event_y);
            return TRUE;
        } else if (button_event->type == GDK_2BUTTON_PRESS) {
            e_day_view_on_event_double_click (
                day_view, -1,
                event_num);
            g_signal_stop_emission_by_name (day_view->top_canvas, "button_press_event");
            return TRUE;
        }
    } else if (event_button == 3) {
        EDayViewEvent *e;

        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return TRUE;

        e = &g_array_index (day_view->long_events, EDayViewEvent, event_num);

        e_day_view_set_selected_time_range_in_top_visible (day_view, e->start, e->end);

        e_day_view_on_event_right_click (
            day_view, button_event,
            E_DAY_VIEW_LONG_EVENT,
            event_num);

        return TRUE;
    }
    return FALSE;
}

static gboolean
e_day_view_on_event_button_press (EDayView *day_view,
                                  gint day,
                                  gint event_num,
                                  GdkEvent *button_event,
                                  ECalendarViewPosition pos,
                                  gint event_x,
                                  gint event_y)
{
    guint event_button = 0;

    gdk_event_get_button (button_event, &event_button);

    if (event_button == 1) {
        if (button_event->type == GDK_BUTTON_PRESS) {
            e_day_view_on_event_click (
                day_view, day, event_num,
                button_event, pos,
                event_x, event_y);
            return TRUE;
        } else if (button_event->type == GDK_2BUTTON_PRESS) {
            e_day_view_on_event_double_click (
                day_view, day,
                event_num);

            g_signal_stop_emission_by_name (day_view->main_canvas, "button_press_event");
            return TRUE;
        }
    } else if (event_button == 3) {
        EDayViewEvent *e;

        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return TRUE;

        e = &g_array_index (day_view->events[day], EDayViewEvent, event_num);

        e_day_view_set_selected_time_range_visible (day_view, e->start, e->end);

        e_day_view_on_event_right_click (
            day_view, button_event, day, event_num);

        return TRUE;
    }
    return FALSE;
}

static void
e_day_view_on_long_event_click (EDayView *day_view,
                                gint event_num,
                                GdkEvent *button_event,
                                ECalendarViewPosition pos,
                                gint event_x,
                                gint event_y)
{
    EDayViewEvent *event;
    GtkLayout *layout;
    GdkWindow *window;
    gint start_day, end_day, day;
    gint item_x, item_y, item_w, item_h;

    if (!is_array_index_in_bounds (day_view->long_events, event_num))
        return;

    event = &g_array_index (day_view->long_events, EDayViewEvent,
                event_num);

    if (!is_comp_data_valid (event))
        return;

    /* Ignore clicks on the EText while editing. */
    if (pos == E_CALENDAR_VIEW_POS_EVENT
        && E_TEXT (event->canvas_item)->editing) {
        GNOME_CANVAS_ITEM_GET_CLASS (event->canvas_item)->event (
            event->canvas_item, button_event);
        return;
    }

    if ((e_cal_util_component_is_instance (event->comp_data->icalcomp) ||
         !e_cal_util_component_has_recurrences (event->comp_data->icalcomp))
        && (pos == E_CALENDAR_VIEW_POS_LEFT_EDGE
        || pos == E_CALENDAR_VIEW_POS_RIGHT_EDGE)) {
        GdkGrabStatus grab_status;
        GdkDevice *event_device;
        guint32 event_time;

        if (!e_day_view_find_long_event_days (event,
                              day_view->days_shown,
                              day_view->day_starts,
                              &start_day, &end_day))
            return;

        /* Grab the keyboard focus, so the event being edited is saved
         * and we can use the Escape key to abort the resize. */
        if (!gtk_widget_has_focus (GTK_WIDGET (day_view)))
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

        layout = GTK_LAYOUT (day_view->top_canvas);
        window = gtk_layout_get_bin_window (layout);

        event_device = gdk_event_get_device (button_event);
        event_time = gdk_event_get_time (button_event);

        grab_status = gdk_device_grab (
            event_device,
            window,
            GDK_OWNERSHIP_NONE,
            FALSE,
            GDK_POINTER_MOTION_MASK |
            GDK_BUTTON_RELEASE_MASK,
            NULL,
            event_time);

        if (grab_status == GDK_GRAB_SUCCESS) {
            g_warn_if_fail (day_view->grabbed_pointer == NULL);
            day_view->grabbed_pointer = g_object_ref (event_device);

            day_view->resize_event_day = E_DAY_VIEW_LONG_EVENT;
            day_view->resize_event_num = event_num;
            day_view->resize_drag_pos = pos;
            day_view->resize_start_row = start_day;
            day_view->resize_end_row = end_day;

            /* Raise the event's item, above the rect as well. */
            gnome_canvas_item_raise_to_top (event->canvas_item);
        }
    } else if (e_day_view_get_long_event_position (day_view, event_num,
                               &start_day, &end_day,
                               &item_x, &item_y,
                               &item_w, &item_h)) {
        /* Remember the item clicked and the mouse position,
         * so we can start a drag if the mouse moves. */
        day_view->pressed_event_day = E_DAY_VIEW_LONG_EVENT;
        day_view->pressed_event_num = event_num;

        day_view->drag_event_x = event_x;
        day_view->drag_event_y = event_y;

        e_day_view_convert_position_in_top_canvas (
            day_view,
            event_x, event_y,
            &day, NULL);
        day_view->drag_event_offset = day - start_day;
    }
}

static void
e_day_view_on_event_click (EDayView *day_view,
                           gint day,
                           gint event_num,
                           GdkEvent *button_event,
                           ECalendarViewPosition pos,
                           gint event_x,
                           gint event_y)
{
    EDayViewEvent *event;
    ECalendarView *cal_view;
    GtkLayout *layout;
    GdkWindow *window;
    gint time_divisions;
    gint tmp_day, row, start_row;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);

    if (!is_comp_data_valid (event))
        return;

    /* Ignore clicks on the EText while editing. */
    if (pos == E_CALENDAR_VIEW_POS_EVENT
        && E_TEXT (event->canvas_item)->editing) {
        GNOME_CANVAS_ITEM_GET_CLASS (event->canvas_item)->event (
            event->canvas_item, button_event);
        return;
    }

    if ((e_cal_util_component_is_instance (event->comp_data->icalcomp) ||
         !e_cal_util_component_has_recurrences (event->comp_data->icalcomp))
        && (pos == E_CALENDAR_VIEW_POS_TOP_EDGE
        || pos == E_CALENDAR_VIEW_POS_BOTTOM_EDGE)) {
        GdkGrabStatus grab_status;
        GdkDevice *event_device;
        guint32 event_time;

        if (event && (!event->is_editable || e_client_is_readonly (E_CLIENT (event->comp_data->client)))) {
            return;
        }

        /* Grab the keyboard focus, so the event being edited is saved
         * and we can use the Escape key to abort the resize. */
        if (!gtk_widget_has_focus (GTK_WIDGET (day_view)))
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

        layout = GTK_LAYOUT (day_view->main_canvas);
        window = gtk_layout_get_bin_window (layout);

        event_device = gdk_event_get_device (button_event);
        event_time = gdk_event_get_time (button_event);

        grab_status = gdk_device_grab (
            event_device,
            window,
            GDK_OWNERSHIP_NONE,
            FALSE,
            GDK_POINTER_MOTION_MASK |
            GDK_BUTTON_RELEASE_MASK,
            NULL,
            event_time);

        if (grab_status == GDK_GRAB_SUCCESS) {
            g_warn_if_fail (day_view->grabbed_pointer == NULL);
            day_view->grabbed_pointer = g_object_ref (event_device);

            day_view->resize_event_day = day;
            day_view->resize_event_num = event_num;
            day_view->resize_drag_pos = pos;
            day_view->resize_start_row = event->start_minute / time_divisions;
            day_view->resize_end_row = (event->end_minute - 1) / time_divisions;
            if (day_view->resize_end_row < day_view->resize_start_row)
                day_view->resize_end_row = day_view->resize_start_row;

            day_view->resize_bars_event_day = day;
            day_view->resize_bars_event_num = event_num;

            e_day_view_reshape_main_canvas_resize_bars (day_view);

            /* Raise the event's item, above the rect as well. */
            gnome_canvas_item_raise_to_top (event->canvas_item);
        }

    } else {
        /* Remember the item clicked and the mouse position,
         * so we can start a drag if the mouse moves. */
        day_view->pressed_event_day = day;
        day_view->pressed_event_num = event_num;

        day_view->drag_event_x = event_x;
        day_view->drag_event_y = event_y;

        e_day_view_convert_position_in_main_canvas (
            day_view,
            event_x, event_y,
            &tmp_day, &row,
            NULL);
        start_row = event->start_minute / time_divisions;
        day_view->drag_event_offset = row - start_row;
    }
}

static void
e_day_view_on_event_double_click (EDayView *day_view,
                                  gint day,
                                  gint event_num)
{
    EDayViewEvent *event;

    if (day == -1) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);
    }

    if (!is_comp_data_valid (event))
        return;

    e_calendar_view_edit_appointment ((ECalendarView *) day_view, event->comp_data->client, event->comp_data->icalcomp, EDIT_EVENT_AUTODETECT);
}

static void
e_day_view_show_popup_menu (EDayView *day_view,
                            GdkEvent *button_event,
                            gint day,
                            gint event_num)
{
    tooltip_destroy (day_view, NULL);

    day_view->popup_event_day = day;
    day_view->popup_event_num = event_num;

    e_calendar_view_popup_event (E_CALENDAR_VIEW (day_view), button_event);
}

/* Restarts a query for the day view */
static void
e_day_view_update_query (EDayView *day_view)
{
    gint rows, r;

    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    day_view->requires_update = FALSE;

    e_day_view_stop_editing_event (day_view);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->top_dates_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
    e_day_view_free_events (day_view);
    e_day_view_queue_layout (day_view);

    rows = e_table_model_row_count (E_TABLE_MODEL (e_calendar_view_get_model (E_CALENDAR_VIEW (day_view))));
    for (r = 0; r < rows; r++) {
        ECalModelComponent *comp_data;

        comp_data = e_cal_model_get_component_at (e_calendar_view_get_model (E_CALENDAR_VIEW (day_view)), r);
        g_return_if_fail (comp_data != NULL);
        process_component (day_view, comp_data);
    }
}

static void
e_day_view_on_event_right_click (EDayView *day_view,
                                 GdkEvent *button_event,
                                 gint day,
                                 gint event_num)
{
    e_day_view_show_popup_menu (day_view, button_event, day, event_num);
}

static gboolean
e_day_view_on_top_canvas_button_release (GtkWidget *widget,
                                         GdkEvent *button_event,
                                         EDayView *day_view)
{
    GdkDevice *event_device;
    guint32 event_time;

    event_device = gdk_event_get_device (button_event);
    event_time = gdk_event_get_time (button_event);

    if (day_view->grabbed_pointer == event_device) {
        gdk_device_ungrab (day_view->grabbed_pointer, event_time);
        g_object_unref (day_view->grabbed_pointer);
        day_view->grabbed_pointer = NULL;
    }

    if (day_view->selection_is_being_dragged) {
        e_day_view_finish_selection (day_view);
    } else if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE) {
        e_day_view_finish_long_event_resize (day_view);
    } else if (day_view->pressed_event_day != -1) {
        e_day_view_start_editing_event (
            day_view,
            day_view->pressed_event_day,
            day_view->pressed_event_num,
            NULL);
    }

    day_view->pressed_event_day = -1;

    return FALSE;
}

static gboolean
e_day_view_on_main_canvas_button_release (GtkWidget *widget,
                                          GdkEvent *button_event,
                                          EDayView *day_view)
{
    GdkDevice *event_device;
    guint32 event_time;

    event_device = gdk_event_get_device (button_event);
    event_time = gdk_event_get_time (button_event);

    if (day_view->grabbed_pointer == event_device) {
        gdk_device_ungrab (day_view->grabbed_pointer, event_time);
        g_object_unref (day_view->grabbed_pointer);
        day_view->grabbed_pointer = NULL;
    }

    if (day_view->selection_is_being_dragged) {
        e_day_view_finish_selection (day_view);
        e_day_view_stop_auto_scroll (day_view);
    } else if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE) {
        e_day_view_finish_resize (day_view);
        e_day_view_stop_auto_scroll (day_view);
    } else if (day_view->pressed_event_day != -1) {
        e_day_view_start_editing_event (
            day_view,
            day_view->pressed_event_day,
            day_view->pressed_event_num,
            NULL);
    }

    day_view->pressed_event_day = -1;

    return FALSE;
}

void
e_day_view_update_calendar_selection_time (EDayView *day_view)
{
    time_t start, end;

    day_view_get_selected_time_range ((ECalendarView *) day_view, &start, &end);
}

static gboolean
e_day_view_on_top_canvas_motion (GtkWidget *widget,
                                 GdkEventMotion *mevent,
                                 EDayView *day_view)
{
    EDayViewEvent *event = NULL;
    ECalendarViewPosition pos;
    gint event_x, event_y, canvas_x, canvas_y;
    gint day, event_num;
    GdkCursor *cursor;
    GdkWindow *window;

    window = gtk_layout_get_bin_window (GTK_LAYOUT (widget));

    /* Convert the coords to the main canvas window, or return if the
     * window is not found. */
    if (!e_day_view_convert_event_coords (
        day_view, (GdkEvent *) mevent, window, &event_x, &event_y))
        return FALSE;

    canvas_x = event_x;
    canvas_y = event_y;

    pos = e_day_view_convert_position_in_top_canvas (
        day_view,
        canvas_x, canvas_y,
        &day, &event_num);
    if (event_num != -1) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return FALSE;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);
    }

    if (day_view->selection_is_being_dragged) {
        e_day_view_update_selection (day_view, day, -1);
        return TRUE;
    } else if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE) {
        if (pos != E_CALENDAR_VIEW_POS_OUTSIDE) {
            e_day_view_update_long_event_resize (day_view, day);
            return TRUE;
        }
    } else if (day_view->pressed_event_day == E_DAY_VIEW_LONG_EVENT) {
        GtkTargetList *target_list;

        if (!is_array_index_in_bounds (day_view->long_events, day_view->pressed_event_num))
            return FALSE;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    day_view->pressed_event_num);

        if (!is_comp_data_valid (event))
            return FALSE;

        if (!e_cal_util_component_has_recurrences (event->comp_data->icalcomp)
            && (abs (canvas_x - day_view->drag_event_x)
            > E_DAY_VIEW_DRAG_START_OFFSET
            || abs (canvas_y - day_view->drag_event_y)
            > E_DAY_VIEW_DRAG_START_OFFSET)) {
            day_view->drag_event_day = day_view->pressed_event_day;
            day_view->drag_event_num = day_view->pressed_event_num;
            day_view->pressed_event_day = -1;

            /* Hide the horizontal bars. */
            if (day_view->resize_bars_event_day != -1) {
                day_view->resize_bars_event_day = -1;
                day_view->resize_bars_event_num = -1;
            }

            target_list = gtk_target_list_new (
                target_table, G_N_ELEMENTS (target_table));
            e_target_list_add_calendar_targets (target_list, 0);
            gtk_drag_begin (
                widget, target_list,
                GDK_ACTION_COPY | GDK_ACTION_MOVE,
                1, (GdkEvent *) mevent);
            gtk_target_list_unref (target_list);
        }
    } else {
        cursor = day_view->normal_cursor;

        /* Recurring events can't be resized. */
        if (event && is_comp_data_valid (event) && !e_cal_util_component_has_recurrences (event->comp_data->icalcomp)) {
            switch (pos) {
            case E_CALENDAR_VIEW_POS_LEFT_EDGE:
            case E_CALENDAR_VIEW_POS_RIGHT_EDGE:
                cursor = day_view->resize_width_cursor;
                break;
            default:
                break;
            }
        }

        /* Only set the cursor if it is different to last one set. */
        if (day_view->last_cursor_set_in_top_canvas != cursor) {
            GdkWindow *window;

            day_view->last_cursor_set_in_top_canvas = cursor;

            window = gtk_widget_get_window (widget);
            gdk_window_set_cursor (window, cursor);
        }

        if (event && E_IS_TEXT (event->canvas_item) && E_TEXT (event->canvas_item)->editing) {
            GNOME_CANVAS_ITEM_GET_CLASS (event->canvas_item)->event (event->canvas_item, (GdkEvent *) mevent);
        }
    }

    return FALSE;
}

static gboolean
e_day_view_on_main_canvas_motion (GtkWidget *widget,
                                  GdkEventMotion *mevent,
                                  EDayView *day_view)
{
    EDayViewEvent *event = NULL;
    ECalendarViewPosition pos;
    gint event_x, event_y, canvas_x, canvas_y;
    gint row, day, event_num;
    GdkWindow *window;
    GdkCursor *cursor;

    window = gtk_layout_get_bin_window (GTK_LAYOUT (widget));

    /* Convert the coords to the main canvas window, or return if the
     * window is not found. */
    if (!e_day_view_convert_event_coords (
        day_view, (GdkEvent *) mevent, window, &event_x, &event_y))
        return FALSE;

    canvas_x = event_x;
    canvas_y = event_y;

    pos = e_day_view_convert_position_in_main_canvas (
        day_view,
        canvas_x, canvas_y,
        &day, &row,
        &event_num);
    if (event_num != -1) {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return FALSE;

        event = &g_array_index (day_view->events[day], EDayViewEvent,
                    event_num);
    }

    if (day_view->selection_is_being_dragged) {
        if (pos != E_CALENDAR_VIEW_POS_OUTSIDE) {
            e_day_view_update_selection (day_view, day, row);
            e_day_view_check_auto_scroll (
                day_view,
                event_x, event_y);
            return TRUE;
        }
    } else if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE) {
        if (pos != E_CALENDAR_VIEW_POS_OUTSIDE) {
            e_day_view_update_resize (day_view, row);
            e_day_view_check_auto_scroll (
                day_view,
                event_x, event_y);
            return TRUE;
        }
    } else if (day_view->pressed_event_day != -1
           && day_view->pressed_event_day != E_DAY_VIEW_LONG_EVENT) {
        GtkTargetList *target_list;

        if ((abs (canvas_x - day_view->drag_event_x)
            > E_DAY_VIEW_DRAG_START_OFFSET
            || abs (canvas_y - day_view->drag_event_y)
            > E_DAY_VIEW_DRAG_START_OFFSET)) {
            day_view->drag_event_day = day_view->pressed_event_day;
            day_view->drag_event_num = day_view->pressed_event_num;
            day_view->pressed_event_day = -1;

            /* Hide the horizontal bars. */
            if (day_view->resize_bars_event_day != -1) {
                day_view->resize_bars_event_day = -1;
                day_view->resize_bars_event_num = -1;
            }

            target_list = gtk_target_list_new (
                target_table, G_N_ELEMENTS (target_table));
            e_target_list_add_calendar_targets (target_list, 0);
            gtk_drag_begin (
                widget, target_list,
                GDK_ACTION_COPY | GDK_ACTION_MOVE,
                1, (GdkEvent *) mevent);
            gtk_target_list_unref (target_list);
        }
    } else {
        cursor = day_view->normal_cursor;

        /* Check if the event is editable and client is not readonly while changing the cursor */
        if (event && event->is_editable && is_comp_data_valid (event) && !e_client_is_readonly (E_CLIENT (event->comp_data->client))) {

            switch (pos) {
            case E_CALENDAR_VIEW_POS_LEFT_EDGE:
                cursor = day_view->move_cursor;
                break;
            case E_CALENDAR_VIEW_POS_TOP_EDGE:
            case E_CALENDAR_VIEW_POS_BOTTOM_EDGE:
                cursor = day_view->resize_height_cursor;
                break;
            default:
                break;
            }
        }

        /* Only set the cursor if it is different to last one set. */
        if (day_view->last_cursor_set_in_main_canvas != cursor) {
            GdkWindow *window;

            day_view->last_cursor_set_in_main_canvas = cursor;

            window = gtk_widget_get_window (widget);
            gdk_window_set_cursor (window, cursor);
        }

        if (event && E_IS_TEXT (event->canvas_item) && E_TEXT (event->canvas_item)->editing) {
            GNOME_CANVAS_ITEM_GET_CLASS (event->canvas_item)->event (event->canvas_item, (GdkEvent *) mevent);
        }
    }

    return FALSE;
}

/* This sets the selection to a single cell. If day is -1 then the current
 * start day is reused. If row is -1 then the selection is in the top canvas.
*/
void
e_day_view_start_selection (EDayView *day_view,
                            gint day,
                            gint row)
{
    if (day == -1) {
        day = day_view->selection_start_day;
        if (day == -1)
            day = 0;
    }

    day_view->selection_start_day = day;
    day_view->selection_end_day = day;

    day_view->selection_start_row = row;
    day_view->selection_end_row = row;

    day_view->selection_is_being_dragged = TRUE;
    day_view->selection_drag_pos = E_DAY_VIEW_DRAG_END;
    day_view->selection_in_top_canvas = (row == -1) ? TRUE : FALSE;

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

/* Updates the selection during a drag. If day is -1 the selection day is
 * unchanged. */
void
e_day_view_update_selection (EDayView *day_view,
                             gint day,
                             gint row)
{
    gboolean need_redraw = FALSE;

    day_view->selection_in_top_canvas = (row == -1) ? TRUE : FALSE;

    if (day == -1)
        day = (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START)
            ? day_view->selection_start_day
            : day_view->selection_end_day;

    if (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START) {
        if (row != day_view->selection_start_row
            || day != day_view->selection_start_day) {
            need_redraw = TRUE;
            day_view->selection_start_row = row;
            day_view->selection_start_day = day;
        }
    } else {
        if (row != day_view->selection_end_row
            || day != day_view->selection_end_day) {
            need_redraw = TRUE;
            day_view->selection_end_row = row;
            day_view->selection_end_day = day;
        }
    }

    e_day_view_normalize_selection (day_view);

    /* FIXME: Optimise? */
    if (need_redraw) {
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
}

static void
e_day_view_normalize_selection (EDayView *day_view)
{
    gint tmp_row, tmp_day;

    /* Switch the drag position if necessary. */
    if (day_view->selection_start_day > day_view->selection_end_day
        || (day_view->selection_start_day == day_view->selection_end_day
        && day_view->selection_start_row > day_view->selection_end_row)) {
        tmp_row = day_view->selection_start_row;
        tmp_day = day_view->selection_start_day;
        day_view->selection_start_day = day_view->selection_end_day;
        day_view->selection_start_row = day_view->selection_end_row;
        day_view->selection_end_day = tmp_day;
        day_view->selection_end_row = tmp_row;
        if (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START)
            day_view->selection_drag_pos = E_DAY_VIEW_DRAG_END;
        else
            day_view->selection_drag_pos = E_DAY_VIEW_DRAG_START;
    }
}

void
e_day_view_finish_selection (EDayView *day_view)
{
    day_view->selection_is_being_dragged = FALSE;
    e_day_view_update_calendar_selection_time (day_view);
}

static void
e_day_view_update_long_event_resize (EDayView *day_view,
                                     gint day)
{
    gint event_num;
    gboolean need_reshape = FALSE;

    event_num = day_view->resize_event_num;

    if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_LEFT_EDGE) {
        day = MIN (day, day_view->resize_end_row);
        if (day != day_view->resize_start_row) {
            need_reshape = TRUE;
            day_view->resize_start_row = day;

        }
    } else {
        day = MAX (day, day_view->resize_start_row);
        if (day != day_view->resize_end_row) {
            need_reshape = TRUE;
            day_view->resize_end_row = day;
        }
    }

    /* FIXME: Optimise? */
    if (need_reshape) {
        e_day_view_reshape_long_event (day_view, event_num);
        gtk_widget_queue_draw (day_view->top_canvas);
    }
}

static void
e_day_view_update_resize (EDayView *day_view,
                          gint row)
{
    /* Same thing again? */
    EDayViewEvent *event;
    gint day, event_num;
    gboolean need_reshape = FALSE;

    if (day_view->resize_event_num == -1)
        return;

    day = day_view->resize_event_day;
    event_num = day_view->resize_event_num;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);

    if (event && (!event->is_editable || !is_comp_data_valid (event) || e_client_is_readonly (E_CLIENT (event->comp_data->client)))) {
        return;
    }

    if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_TOP_EDGE) {
        row = MIN (row, day_view->resize_end_row);
        if (row != day_view->resize_start_row) {
            need_reshape = TRUE;
            day_view->resize_start_row = row;

        }
    } else {
        row = MAX (row, day_view->resize_start_row);
        if (row != day_view->resize_end_row) {
            need_reshape = TRUE;
            day_view->resize_end_row = row;
        }
    }

    /* FIXME: Optimise? */
    if (need_reshape) {
        e_day_view_reshape_day_event (day_view, day, event_num);
        e_day_view_reshape_main_canvas_resize_bars (day_view);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
}

/* This converts the resize start or end row back to a time and updates the
 * event. */
static void
e_day_view_finish_long_event_resize (EDayView *day_view)
{
    EDayViewEvent *event;
    gint event_num;
    ECalComponent *comp;
    ECalComponentDateTime date;
    struct icaltimetype itt;
    time_t dt;
    ECalModel *model;
    ECalClient *client;
    ESourceRegistry *registry;
    CalObjModType mod = CALOBJ_MOD_ALL;
    GtkWindow *toplevel;
    gint is_date;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    registry = e_cal_model_get_registry (model);

    event_num = day_view->resize_event_num;

    if (!is_array_index_in_bounds (day_view->long_events, event_num))
        return;

    event = &g_array_index (day_view->long_events, EDayViewEvent,
                event_num);

    if (!is_comp_data_valid (event))
        return;

    client = event->comp_data->client;

    /* We use a temporary copy of the comp since we don't want to
     * change the original comp here. Otherwise we would not detect that
     * the event's time had changed in the "update_event" callback. */
    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

    if (e_cal_component_has_attendees (comp) &&
        !itip_organizer_is_user (registry, comp, client)) {
        g_object_unref (comp);
        e_day_view_abort_resize (day_view);
        return;
    }

    date.value = &itt;
    date.tzid = NULL;

    if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_LEFT_EDGE) {
        ECalComponentDateTime ecdt;

        e_cal_component_get_dtstart (comp, &ecdt);
        is_date = ecdt.value && ecdt.value->is_date;
        if (!is_date)
            date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
        dt = day_view->day_starts[day_view->resize_start_row];
        *date.value = icaltime_from_timet_with_zone (dt, is_date,
                                 e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
        cal_comp_set_dtstart_with_oldzone (client, comp, &date);
        e_cal_component_free_datetime (&ecdt);
        date.tzid = NULL; /* do not reuse it later */
    } else {
        ECalComponentDateTime ecdt;

        e_cal_component_get_dtend (comp, &ecdt);
        is_date = ecdt.value && ecdt.value->is_date;
        if (!is_date)
            date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
        dt = day_view->day_starts[day_view->resize_end_row + 1];
        *date.value = icaltime_from_timet_with_zone (dt, is_date,
                                 e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
        cal_comp_set_dtend_with_oldzone (client, comp, &date);
        e_cal_component_free_datetime (&ecdt);
        date.tzid = NULL; /* do not reuse it later */
    }

    e_cal_component_commit_sequence (comp);
    if (e_cal_component_has_recurrences (comp)) {
        if (!recur_component_dialog (client, comp, &mod, NULL, FALSE)) {
            gtk_widget_queue_draw (day_view->top_canvas);
            goto out;
        }

        if (mod == CALOBJ_MOD_ALL)
            comp_util_sanitize_recurrence_master (comp, client);

        if (mod == CALOBJ_MOD_THIS) {
            /* set the correct DTSTART/DTEND on the individual recurrence */
            if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_TOP_EDGE) {
                *date.value = icaltime_from_timet_with_zone (
                    event->comp_data->instance_end, FALSE,
                    e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
                cal_comp_set_dtend_with_oldzone (client, comp, &date);
            } else {
                *date.value = icaltime_from_timet_with_zone (
                    event->comp_data->instance_start, FALSE,
                    e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
                cal_comp_set_dtstart_with_oldzone (client, comp, &date);
            }

            e_cal_component_set_rdate_list (comp, NULL);
            e_cal_component_set_rrule_list (comp, NULL);
            e_cal_component_set_exdate_list (comp, NULL);
            e_cal_component_set_exrule_list (comp, NULL);

            e_cal_component_commit_sequence (comp);
        }
    } else if (e_cal_component_is_instance (comp))
        mod = CALOBJ_MOD_THIS;

    toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (day_view)));

    e_calendar_view_modify_and_send (
        E_CALENDAR_VIEW (day_view),
        comp, client, mod, toplevel, TRUE);

 out:
    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_NONE;

    g_object_unref (comp);
}

/* This converts the resize start or end row back to a time and updates the
 * event. */
static void
e_day_view_finish_resize (EDayView *day_view)
{
    EDayViewEvent *event;
    gint day, event_num;
    ECalComponent *comp;
    ECalComponentDateTime date;
    struct icaltimetype itt;
    time_t dt;
    ECalModel *model;
    ECalClient *client;
    ESourceRegistry *registry;
    CalObjModType mod = CALOBJ_MOD_ALL;
    GtkWindow *toplevel;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    registry = e_cal_model_get_registry (model);

    if (day_view->resize_event_num == -1)
        return;

    day = day_view->resize_event_day;
    event_num = day_view->resize_event_num;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);

    if (!is_comp_data_valid (event))
        return;

    client = event->comp_data->client;

    /* We use a temporary shallow copy of the ico since we don't want to
     * change the original ico here. Otherwise we would not detect that
     * the event's time had changed in the "update_event" callback. */
    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

    if (e_cal_component_has_attendees (comp) &&
        !itip_organizer_is_user (registry, comp, client)) {
        g_object_unref (comp);
        e_day_view_abort_resize (day_view);
        return;
    }

    date.value = &itt;
    date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

    if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_TOP_EDGE) {
        dt = e_day_view_convert_grid_position_to_time (day_view, day, day_view->resize_start_row);
        *date.value = icaltime_from_timet_with_zone (dt, FALSE,
                                 e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
        cal_comp_set_dtstart_with_oldzone (client, comp, &date);
    } else {
        dt = e_day_view_convert_grid_position_to_time (day_view, day, day_view->resize_end_row + 1);
        *date.value = icaltime_from_timet_with_zone (dt, FALSE,
                                 e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
        cal_comp_set_dtend_with_oldzone (client, comp, &date);
    }

    e_cal_component_commit_sequence (comp);

    if (day_view->last_edited_comp_string != NULL) {
        g_free (day_view->last_edited_comp_string);
        day_view->last_edited_comp_string = NULL;
    }

    day_view->last_edited_comp_string = e_cal_component_get_as_string (comp);

    /* Hide the horizontal bars. */
    day_view->resize_bars_event_day = -1;
    day_view->resize_bars_event_num = -1;

    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_NONE;

    if (e_cal_component_has_recurrences (comp)) {
        if (!recur_component_dialog (client, comp, &mod, NULL, FALSE)) {
            gtk_widget_queue_draw (day_view->top_canvas);
            goto out;
        }

        if (mod == CALOBJ_MOD_ALL)
            comp_util_sanitize_recurrence_master (comp, client);

        if (mod == CALOBJ_MOD_THIS) {
            /* set the correct DTSTART/DTEND on the individual recurrence */
            if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_TOP_EDGE) {
                *date.value = icaltime_from_timet_with_zone (
                    event->comp_data->instance_end, FALSE,
                    e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
                cal_comp_set_dtend_with_oldzone (client, comp, &date);
            } else {
                *date.value = icaltime_from_timet_with_zone (
                    event->comp_data->instance_start, FALSE,
                    e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
                cal_comp_set_dtstart_with_oldzone (client, comp, &date);
            }

            e_cal_component_set_rdate_list (comp, NULL);
            e_cal_component_set_rrule_list (comp, NULL);
            e_cal_component_set_exdate_list (comp, NULL);
            e_cal_component_set_exrule_list (comp, NULL);
        }
    } else if (e_cal_component_is_instance (comp))
        mod = CALOBJ_MOD_THIS;

    toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (day_view)));

    e_cal_component_commit_sequence (comp);

    e_calendar_view_modify_and_send (
        E_CALENDAR_VIEW (day_view),
        comp, client, mod, toplevel, TRUE);

 out:
    g_object_unref (comp);
}

static void
e_day_view_abort_resize (EDayView *day_view)
{
    GdkWindow *window;
    gint day, event_num;

    if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_NONE)
        return;

    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_NONE;

    day = day_view->resize_event_day;
    event_num = day_view->resize_event_num;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        e_day_view_reshape_long_event (day_view, event_num);
        gtk_widget_queue_draw (day_view->top_canvas);

        day_view->last_cursor_set_in_top_canvas = day_view->normal_cursor;
        window = gtk_widget_get_window (day_view->top_canvas);
        gdk_window_set_cursor (window, day_view->normal_cursor);
    } else {
        e_day_view_reshape_day_event (day_view, day, event_num);
        e_day_view_reshape_main_canvas_resize_bars (day_view);
        gtk_widget_queue_draw (day_view->main_canvas);

        day_view->last_cursor_set_in_main_canvas = day_view->normal_cursor;
        window = gtk_widget_get_window (day_view->main_canvas);
        gdk_window_set_cursor (window, day_view->normal_cursor);
    }
}

static void
e_day_view_free_events (EDayView *day_view)
{
    gint day;

    /* Reset all our indices. */
    day_view->editing_event_day = -1;
    day_view->popup_event_day = -1;
    day_view->resize_bars_event_day = -1;
    day_view->resize_event_day = -1;
    day_view->pressed_event_day = -1;
    day_view->drag_event_day = -1;
    day_view->editing_event_num = -1;
    day_view->popup_event_num = -1;

    e_day_view_free_event_array (day_view, day_view->long_events);

    for (day = 0; day < E_DAY_VIEW_MAX_DAYS; day++)
        e_day_view_free_event_array (day_view, day_view->events[day]);
}

static void
e_day_view_free_event_array (EDayView *day_view,
                             GArray *array)
{
    EDayViewEvent *event;
    gint event_num;

    for (event_num = 0; event_num < array->len; event_num++) {
        event = &g_array_index (array, EDayViewEvent, event_num);
        if (event->canvas_item)
            g_object_run_dispose (G_OBJECT (event->canvas_item));

        if (is_comp_data_valid (event))
            g_object_unref (event->comp_data);
    }

    g_array_set_size (array, 0);
}

/* This adds one event to the view, adding it to the appropriate array. */
static gboolean
e_day_view_add_event (ESourceRegistry *registry,
                      ECalComponent *comp,
                      time_t start,
                      time_t end,
                      gpointer data)

{
    EDayViewEvent event;
    gint day, offset;
    struct icaltimetype start_tt, end_tt;
    AddEventData *add_event_data;

    add_event_data = data;

    /*if (end < start || start >= add_event_data->day_view->upper || end < add_event_data->day_view->lower) {
        g_print ("%s: day_view: %p\n", G_STRFUNC, add_event_data->day_view);
        g_print ("\tDay view lower: %s", ctime (&add_event_data->day_view->lower));
        g_print ("\tDay view upper: %s", ctime (&add_event_data->day_view->upper));
        g_print ("\tEvent start: %s", ctime (&start));
        g_print ("\tEvent end  : %s\n", ctime (&end));
    }*/

    /* Check that the event times are valid. */
    g_return_val_if_fail (start <= end, TRUE);
    g_return_val_if_fail (start < add_event_data->day_view->upper, TRUE);
    g_return_val_if_fail (end > add_event_data->day_view->lower, TRUE);

    start_tt = icaltime_from_timet_with_zone (
        start, FALSE,
        e_calendar_view_get_timezone (E_CALENDAR_VIEW (add_event_data->day_view)));
    end_tt = icaltime_from_timet_with_zone (
        end, FALSE,
        e_calendar_view_get_timezone (E_CALENDAR_VIEW (add_event_data->day_view)));

    if (add_event_data->comp_data) {
        event.comp_data = g_object_ref (add_event_data->comp_data);
    } else {
        event.comp_data = g_object_new (E_TYPE_CAL_MODEL_COMPONENT, NULL);

        event.comp_data->client = g_object_ref (e_cal_model_get_default_client (e_calendar_view_get_model (E_CALENDAR_VIEW (add_event_data->day_view))));
        e_cal_component_abort_sequence (comp);
        event.comp_data->icalcomp = icalcomponent_new_clone (e_cal_component_get_icalcomponent (comp));
    }

    event.start = start;
    event.tooltip = NULL;
    event.color = NULL;
    event.timeout = -1;
    event.end = end;
    event.canvas_item = NULL;
    event.comp_data->instance_start = start;
    event.comp_data->instance_end = end;

    /* Calculate the start & end minute, relative to the top of the
     * display. */
    offset = add_event_data->day_view->first_hour_shown * 60
        + add_event_data->day_view->first_minute_shown;
    event.start_minute = start_tt.hour * 60 + start_tt.minute - offset;
    event.end_minute = end_tt.hour * 60 + end_tt.minute - offset;

    event.start_row_or_col = 0;
    event.num_columns = 0;

    event.different_timezone = FALSE;
    if (!cal_comp_util_compare_event_timezones (comp,
                            event.comp_data->client,
                            e_calendar_view_get_timezone (E_CALENDAR_VIEW (add_event_data->day_view))))
        event.different_timezone = TRUE;

    if (!e_cal_component_has_attendees (comp) ||
        itip_organizer_is_user (registry, comp, event.comp_data->client) ||
        itip_sentby_is_user (registry, comp, event.comp_data->client))
        event.is_editable = TRUE;
    else
        event.is_editable = FALSE;

    /* Find out which array to add the event to. */
    for (day = 0; day < add_event_data->day_view->days_shown; day++) {
        if (start >= add_event_data->day_view->day_starts[day]
            && end <= add_event_data->day_view->day_starts[day + 1]) {

            /* Special case for when the appointment ends at
             * midnight, i.e. the start of the next day. */
            if (end == add_event_data->day_view->day_starts[day + 1]) {

                /* If the event last the entire day, then we
                 * skip it here so it gets added to the top
                 * canvas. */
                if (start == add_event_data->day_view->day_starts[day])
                    break;

                event.end_minute = 24 * 60;
            }

            g_array_append_val (add_event_data->day_view->events[day], event);
            add_event_data->day_view->events_sorted[day] = FALSE;
            add_event_data->day_view->need_layout[day] = TRUE;
            return TRUE;
        }
    }

    /* The event wasn't within one day so it must be a long event,
     * i.e. shown in the top canvas. */
    g_array_append_val (add_event_data->day_view->long_events, event);
    add_event_data->day_view->long_events_sorted = FALSE;
    add_event_data->day_view->long_events_need_layout = TRUE;
    return TRUE;
}

/* This lays out the short (less than 1 day) events in the columns.
 * Any long events are simply skipped. */
void
e_day_view_check_layout (EDayView *day_view)
{
    ECalendarView *cal_view;
    gint time_divisions;
    gint day, rows_in_top_display;
    gint max_cols = -1;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    /* Don't bother if we aren't visible. */
    if (!E_CALENDAR_VIEW (day_view)->in_focus) {
        e_day_view_free_events (day_view);
        day_view->requires_update = TRUE;
        return;
    }

    /* Make sure the events are sorted (by start and size). */
    e_day_view_ensure_events_sorted (day_view);

    for (day = 0; day < day_view->days_shown; day++) {
        if (day_view->need_layout[day]) {
            gint cols;

            cols = e_day_view_layout_day_events (
                day_view->events[day],
                day_view->rows,
                time_divisions,
                day_view->cols_per_row[day],
                day_view->days_shown == 1 ? -1 :
                E_DAY_VIEW_MULTI_DAY_MAX_COLUMNS);

            max_cols = MAX (cols, max_cols);
        }

        if (day_view->need_layout[day]
            || day_view->need_reshape[day]) {
            e_day_view_reshape_day_events (day_view, day);

            if (day_view->resize_bars_event_day == day)
                e_day_view_reshape_main_canvas_resize_bars (day_view);
        }

        day_view->need_layout[day] = FALSE;
        day_view->need_reshape[day] = FALSE;
    }

    if (day_view->long_events_need_layout) {
        e_day_view_layout_long_events (
            day_view->long_events,
            day_view->days_shown,
            day_view->day_starts,
            &rows_in_top_display);
    }

    if (day_view->long_events_need_layout
        || day_view->long_events_need_reshape)
        e_day_view_reshape_long_events (day_view);

    if (day_view->long_events_need_layout
            && day_view->rows_in_top_display != rows_in_top_display) {
        day_view->rows_in_top_display = rows_in_top_display;
        e_day_view_update_top_scroll (day_view, FALSE);
    }

    day_view->long_events_need_layout = FALSE;
    day_view->long_events_need_reshape = FALSE;

    if (max_cols != -1 && max_cols != day_view->max_cols) {
        day_view->max_cols = max_cols;
        e_day_view_recalc_main_canvas_size (day_view);
    }
}

static void
e_day_view_reshape_long_events (EDayView *day_view)
{
    EDayViewEvent *event;
    gint event_num;

    for (event_num = 0; event_num < day_view->long_events->len;
         event_num++) {
        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);

        if (event->num_columns == 0) {
            if (event->canvas_item) {
                g_object_run_dispose (G_OBJECT (event->canvas_item));
                event->canvas_item = NULL;
            }
        } else {
            e_day_view_reshape_long_event (day_view, event_num);
        }
    }
}

static void
e_day_view_reshape_long_event (EDayView *day_view,
                               gint event_num)
{
    EDayViewEvent *event;
    gint start_day, end_day, item_x, item_y, item_w, item_h;
    gint text_x, text_w, num_icons, icons_width, width, time_width;
    ECalComponent *comp;
    gint min_text_x, max_text_w, text_width, line_len;
    gchar *text, *end_of_line;
    gboolean show_icons = TRUE, use_max_width = FALSE;
    PangoContext *pango_context;
    PangoLayout *layout;

    if (!is_array_index_in_bounds (day_view->long_events, event_num))
        return;

    event = &g_array_index (day_view->long_events, EDayViewEvent,
                event_num);

    if (!e_day_view_get_long_event_position (day_view, event_num,
                         &start_day, &end_day,
                         &item_x, &item_y,
                         &item_w, &item_h)) {
        if (event->canvas_item) {
            g_object_run_dispose (G_OBJECT (event->canvas_item));
            event->canvas_item = NULL;
        }
        return;
    }

    if (!is_comp_data_valid (event))
        return;

    /* Take off the border and padding. */
    item_x += E_DAY_VIEW_LONG_EVENT_BORDER_WIDTH + E_DAY_VIEW_LONG_EVENT_X_PAD;
    item_w -= (E_DAY_VIEW_LONG_EVENT_BORDER_WIDTH + E_DAY_VIEW_LONG_EVENT_X_PAD) * 2;
    item_y += E_DAY_VIEW_LONG_EVENT_BORDER_HEIGHT + E_DAY_VIEW_LONG_EVENT_Y_PAD;
    item_h -= (E_DAY_VIEW_LONG_EVENT_BORDER_HEIGHT + E_DAY_VIEW_LONG_EVENT_Y_PAD) * 2;

    /* We don't show the icons while resizing, since we'd have to
     * draw them on top of the resize rect. Nor when editing. */
    num_icons = 0;
    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

    /* Set up Pango prerequisites */
    pango_context = gtk_widget_get_pango_context (GTK_WIDGET (day_view));
    layout = pango_layout_new (pango_context);

    if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE
        && day_view->resize_event_day == E_DAY_VIEW_LONG_EVENT
        && day_view->resize_event_num == event_num)
        show_icons = FALSE;

    if (day_view->editing_event_day == E_DAY_VIEW_LONG_EVENT
        && day_view->editing_event_num == event_num) {
        show_icons = FALSE;
        use_max_width = TRUE;
    }

    if (show_icons) {
        if (e_cal_component_has_alarms (comp))
            num_icons++;
        if (e_cal_component_has_recurrences (comp) || e_cal_component_is_instance (comp))
            num_icons++;
        if (event->different_timezone)
            num_icons++;

        if (e_cal_component_has_attendees (comp))
            num_icons++;
        if (e_cal_component_has_attachments (comp))
            num_icons++;
        num_icons += cal_comp_util_get_n_icons (comp, NULL);
    }

    if (!event->canvas_item) {
        GtkWidget *widget;
        GdkColor color;

        widget = (GtkWidget *) day_view;

        color = e_day_view_get_text_color (day_view, event, widget);

        event->canvas_item =
            gnome_canvas_item_new (
                GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->top_canvas)->root),
                e_text_get_type (),
                "clip", TRUE,
                "max_lines", 1,
                "editable", TRUE,
                "use_ellipsis", TRUE,
                "fill_color_gdk", &color,
                "im_context", E_CANVAS (day_view->top_canvas)->im_context,
                NULL);
        g_object_set_data (G_OBJECT (event->canvas_item), "event-num", GINT_TO_POINTER (event_num));
        g_object_set_data (G_OBJECT (event->canvas_item), "event-day", GINT_TO_POINTER (E_DAY_VIEW_LONG_EVENT));
        g_signal_connect (
            event->canvas_item, "event",
            G_CALLBACK (e_day_view_on_text_item_event), day_view);
        g_signal_emit_by_name (day_view, "event_added", event);

        e_day_view_update_long_event_label (day_view, event_num);
    }

    /* Calculate its position. We first calculate the ideal position which
     * is centered with the icons. We then make sure we haven't gone off
     * the left edge of the available space. Finally we make sure we don't
     * go off the right edge. */
    icons_width = (E_DAY_VIEW_ICON_WIDTH + E_DAY_VIEW_ICON_X_PAD)
        * num_icons + E_DAY_VIEW_LONG_EVENT_ICON_R_PAD;
    time_width = e_day_view_get_time_string_width (day_view);

    if (use_max_width) {
        text_x = item_x;
        text_w = item_w;
    } else {
        /* Get the requested size of the label. */
        g_object_get (event->canvas_item, "text", &text, NULL);
        text_width = 0;
        if (text) {
            end_of_line = strchr (text, '\n');
            if (end_of_line)
                line_len = end_of_line - text;
            else
                line_len = strlen (text);
            pango_layout_set_text (layout, text, line_len);
            pango_layout_get_pixel_size (layout, &text_width, NULL);
            g_free (text);
        }

        width = text_width + icons_width;
        text_x = item_x + (item_w - width) / 2;

        min_text_x = item_x;
        if (event->start > day_view->day_starts[start_day])
            min_text_x += time_width + E_DAY_VIEW_LONG_EVENT_TIME_X_PAD;

        text_x = MAX (text_x, min_text_x);

        max_text_w = item_x + item_w - text_x;
        if (event->end < day_view->day_starts[end_day + 1])
            max_text_w -= time_width + E_DAY_VIEW_LONG_EVENT_TIME_X_PAD;

        text_w = MIN (width, max_text_w);

        /* Now take out the space for the icons. */
        text_x += icons_width;
        text_w -= icons_width;
    }

    text_w = MAX (text_w, 0);
    gnome_canvas_item_set (
        event->canvas_item,
        "clip_width", (gdouble) text_w,
        "clip_height", (gdouble) item_h,
        NULL);
    e_canvas_item_move_absolute (
        event->canvas_item,
        text_x, item_y);

    g_object_unref (layout);
    g_object_unref (comp);
}

/* This creates or updates the sizes of the canvas items for one day of the
 * main canvas. */
static void
e_day_view_reshape_day_events (EDayView *day_view,
                               gint day)
{
    gint event_num;

    for (event_num = 0; event_num < day_view->events[day]->len;
         event_num++) {
        EDayViewEvent *event;
        gchar *current_comp_string;

        e_day_view_reshape_day_event (day_view, day, event_num);
        event = &g_array_index (day_view->events[day], EDayViewEvent, event_num);

        if (!is_comp_data_valid (event))
            continue;

        current_comp_string = icalcomponent_as_ical_string_r (event->comp_data->icalcomp);
        if (day_view->last_edited_comp_string == NULL) {
            g_free (current_comp_string);
            continue;
        }

        if (strncmp (current_comp_string, day_view->last_edited_comp_string,50) == 0) {
            e_canvas_item_grab_focus (event->canvas_item, TRUE);
            g_free (day_view->last_edited_comp_string);
            day_view-> last_edited_comp_string = NULL;
        }
        g_free (current_comp_string);
    }
}

static void
e_day_view_reshape_day_event (EDayView *day_view,
                              gint day,
                              gint event_num)
{
    EDayViewEvent *event;
    gint item_x, item_y, item_w, item_h;
    gint num_icons, icons_offset;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);

    if (!e_day_view_get_event_position (day_view, day, event_num,
                        &item_x, &item_y,
                        &item_w, &item_h)) {
        if (event->canvas_item) {
            g_object_run_dispose (G_OBJECT (event->canvas_item));
            event->canvas_item = NULL;
        }
    } else {
        /* Skip the border and padding. */
        item_x += E_DAY_VIEW_BAR_WIDTH + E_DAY_VIEW_EVENT_X_PAD;
        item_w -= E_DAY_VIEW_BAR_WIDTH + E_DAY_VIEW_EVENT_X_PAD * 2;
        item_y += E_DAY_VIEW_EVENT_BORDER_HEIGHT + E_DAY_VIEW_EVENT_Y_PAD;
        item_h -= (E_DAY_VIEW_EVENT_BORDER_HEIGHT + E_DAY_VIEW_EVENT_Y_PAD) * 2;

        /* We don't show the icons while resizing, since we'd have to
         * draw them on top of the resize rect. */
        icons_offset = 0;
        num_icons = 0;
        if (is_comp_data_valid (event) && (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_NONE
            || day_view->resize_event_day != day
            || day_view->resize_event_num != event_num)) {
            ECalComponent *comp;

            comp = e_cal_component_new ();
            e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

            if (e_cal_component_has_alarms (comp))
                num_icons++;
            if (e_cal_component_has_recurrences (comp) || e_cal_component_is_instance (comp))
                num_icons++;
            if (e_cal_component_has_attachments (comp))
                num_icons++;
            if (event->different_timezone)
                num_icons++;
            if (e_cal_component_has_attendees (comp))
                num_icons++;

            num_icons += cal_comp_util_get_n_icons (comp, NULL);
            g_object_unref (comp);
        }

        if (num_icons > 0) {
            if (item_h >= (E_DAY_VIEW_ICON_HEIGHT + E_DAY_VIEW_ICON_Y_PAD) * num_icons)
                icons_offset = E_DAY_VIEW_ICON_WIDTH + E_DAY_VIEW_ICON_X_PAD * 2;
            else if (item_h <= (E_DAY_VIEW_ICON_HEIGHT + E_DAY_VIEW_ICON_Y_PAD) * 2 || num_icons == 1)
                icons_offset = (E_DAY_VIEW_ICON_WIDTH + E_DAY_VIEW_ICON_X_PAD) * num_icons + E_DAY_VIEW_ICON_X_PAD;
            else
                icons_offset = E_DAY_VIEW_ICON_X_PAD;
        }

        if (!event->canvas_item) {
            GtkWidget *widget;
            GdkColor color;

            widget = (GtkWidget *) day_view;

            color = e_day_view_get_text_color (day_view, event, widget);

            event->canvas_item = gnome_canvas_item_new (
                GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->main_canvas)->root),
                e_text_get_type (),
                "line_wrap", TRUE,
                "editable", TRUE,
                "clip", TRUE,
                "use_ellipsis", TRUE,
                "fill_color_gdk", &color,
                "im_context", E_CANVAS (day_view->main_canvas)->im_context,
                NULL);
            g_object_set_data (G_OBJECT (event->canvas_item), "event-num", GINT_TO_POINTER (event_num));
            g_object_set_data (G_OBJECT (event->canvas_item), "event-day", GINT_TO_POINTER (day));
            g_signal_connect (
                event->canvas_item, "event",
                G_CALLBACK (e_day_view_on_text_item_event), day_view);
            g_signal_emit_by_name (day_view, "event_added", event);

            e_day_view_update_event_label (day_view, day, event_num);
        }

        item_w = MAX (item_w, 0);
        gnome_canvas_item_set (
            event->canvas_item,
            "clip_width", (gdouble) item_w,
            "clip_height", (gdouble) item_h,
            "x_offset", (gdouble) icons_offset,
            NULL);
        e_canvas_item_move_absolute (
            event->canvas_item,
            item_x, item_y);
    }
}

/* This creates or resizes the horizontal bars used to resize events in the
 * main canvas. */
static void
e_day_view_reshape_main_canvas_resize_bars (EDayView *day_view)
{
    gint day, event_num;
    gint item_x, item_y, item_w, item_h;
    gdouble x, y, w, h;

    day = day_view->resize_bars_event_day;
    event_num = day_view->resize_bars_event_num;

    /* If we're not editing an event, or the event is not shown,
     * hide the resize bars. */
    if (day != -1 && day == day_view->drag_event_day
        && event_num == day_view->drag_event_num) {
        g_object_get (
            day_view->drag_rect_item,
            "x1", &x,
            "y1", &y,
            "x2", &w,
            "y2", &h,
            NULL);
        w -= x;
        x++;
        h -= y;
    } else if (day != -1
           && e_day_view_get_event_position (day_view, day, event_num,
                             &item_x, &item_y,
                             &item_w, &item_h)) {
        x = item_x + E_DAY_VIEW_BAR_WIDTH;
        y = item_y;
        w = item_w - E_DAY_VIEW_BAR_WIDTH;
        h = item_h;

        gtk_widget_queue_draw (day_view->main_canvas);
    } else {
        return;
    }
}

static void
e_day_view_ensure_events_sorted (EDayView *day_view)
{
    gint day;

    /* Sort the long events. */
    if (!day_view->long_events_sorted) {
        qsort (
            day_view->long_events->data,
            day_view->long_events->len,
            sizeof (EDayViewEvent),
            e_day_view_event_sort_func);
        day_view->long_events_sorted = TRUE;
    }

    /* Sort the events for each day. */
    for (day = 0; day < day_view->days_shown; day++) {
        if (!day_view->events_sorted[day]) {
            qsort (
                day_view->events[day]->data,
                day_view->events[day]->len,
                sizeof (EDayViewEvent),
                e_day_view_event_sort_func);
            day_view->events_sorted[day] = TRUE;
        }
    }
}

gint
e_day_view_event_sort_func (gconstpointer arg1,
                            gconstpointer arg2)
{
    EDayViewEvent *event1, *event2;

    event1 = (EDayViewEvent *) arg1;
    event2 = (EDayViewEvent *) arg2;

    if (event1->start < event2->start)
        return -1;
    if (event1->start > event2->start)
        return 1;

    if (event1->end > event2->end)
        return -1;
    if (event1->end < event2->end)
        return 1;

    return 0;
}

static gboolean
e_day_view_do_key_press (GtkWidget *widget,
                         GdkEventKey *event)
{
    EDayView *day_view;
    guint keyval;
    gboolean stop_emission;

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (E_IS_DAY_VIEW (widget), FALSE);
    g_return_val_if_fail (event != NULL, FALSE);

    day_view = E_DAY_VIEW (widget);
    keyval = event->keyval;

    /* The Escape key aborts a resize operation. */
    if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE) {
        if (keyval == GDK_KEY_Escape) {
            if (day_view->grabbed_pointer != NULL) {
                gdk_device_ungrab (
                    day_view->grabbed_pointer,
                    event->time);
                g_object_unref (day_view->grabbed_pointer);
                day_view->grabbed_pointer = NULL;
            }
            e_day_view_abort_resize (day_view);
        }
        return FALSE;
    }

    /* Alt + Arrow Keys to move a selected event through time lines */
    if (((event->state & GDK_SHIFT_MASK) != GDK_SHIFT_MASK)
        &&((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK)
        &&((event->state & GDK_MOD1_MASK) == GDK_MOD1_MASK)) {
        if (keyval == GDK_KEY_Up || keyval == GDK_KEY_KP_Up)
            return e_day_view_event_move ((ECalendarView *) day_view, E_CAL_VIEW_MOVE_UP);
        else if (keyval == GDK_KEY_Down || keyval == GDK_KEY_KP_Down)
            return e_day_view_event_move ((ECalendarView *) day_view, E_CAL_VIEW_MOVE_DOWN);
        else if (keyval == GDK_KEY_Left || keyval == GDK_KEY_KP_Left)
            return e_day_view_event_move ((ECalendarView *) day_view, E_CAL_VIEW_MOVE_LEFT);
        else if (keyval == GDK_KEY_Right || keyval == GDK_KEY_KP_Right)
            return e_day_view_event_move ((ECalendarView *) day_view, E_CAL_VIEW_MOVE_RIGHT);
    }

    /*Go to the start/end of a work day*/
    if ((keyval == GDK_KEY_Home)
            &&((event->state & GDK_SHIFT_MASK) != GDK_SHIFT_MASK)
            &&((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK)
            &&((event->state & GDK_MOD1_MASK) != GDK_MOD1_MASK)) {
        e_day_view_goto_start_of_work_day (day_view);
        return TRUE;
    }
    if ((keyval == GDK_KEY_End)
        &&((event->state & GDK_SHIFT_MASK) != GDK_SHIFT_MASK)
        &&((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK)
        &&((event->state & GDK_MOD1_MASK) != GDK_MOD1_MASK)) {
        e_day_view_goto_end_of_work_day (day_view);
        return TRUE;
    }

    /* In DayView, Shift+Home/End, Change the duration to the time that begins/ends the current work day */
    if ((keyval == GDK_KEY_Home)
        &&((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
        &&((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK)
        &&((event->state & GDK_MOD1_MASK) != GDK_MOD1_MASK)) {
        e_day_view_change_duration_to_start_of_work_day (day_view);
        return TRUE;
    }
    if ((keyval == GDK_KEY_End)
        &&((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
        &&((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK)
        &&((event->state & GDK_MOD1_MASK) != GDK_MOD1_MASK)) {
        e_day_view_change_duration_to_end_of_work_day (day_view);
        return TRUE;
    }

    /* Handle the cursor keys for moving & extending the selection. */
    stop_emission = TRUE;
    if (event->state & GDK_SHIFT_MASK) {
        switch (keyval) {
        case GDK_KEY_Up:
            e_day_view_cursor_key_up_shifted (day_view, event);
            break;
        case GDK_KEY_Down:
            e_day_view_cursor_key_down_shifted (day_view, event);
            break;
        case GDK_KEY_Left:
            e_day_view_cursor_key_left_shifted (day_view, event);
            break;
        case GDK_KEY_Right:
            e_day_view_cursor_key_right_shifted (day_view, event);
            break;
        default:
            stop_emission = FALSE;
            break;
        }
    } else if (!(event->state & GDK_MOD1_MASK)) {
        switch (keyval) {
        case GDK_KEY_Up:
            e_day_view_cursor_key_up (day_view, event);
            break;
        case GDK_KEY_Down:
            e_day_view_cursor_key_down (day_view, event);
            break;
        case GDK_KEY_Left:
            e_day_view_cursor_key_left (day_view, event);
            break;
        case GDK_KEY_Right:
            e_day_view_cursor_key_right (day_view, event);
            break;
        case GDK_KEY_Page_Up:
            e_day_view_scroll (day_view, E_DAY_VIEW_PAGE_STEP);
            break;
        case GDK_KEY_Page_Down:
            e_day_view_scroll (day_view, -E_DAY_VIEW_PAGE_STEP);
            break;
        default:
            stop_emission = FALSE;
            break;
        }
    }
    else
        stop_emission = FALSE;
    if (stop_emission)
        return TRUE;

    if (day_view->selection_start_day == -1)
        return FALSE;

    /* We only want to start an edit with a return key or a simple
     * character. */
    if ((keyval != GDK_KEY_Return) &&
        (((keyval >= 0x20) && (keyval <= 0xFF)
          && (event->state & (GDK_CONTROL_MASK | GDK_MOD1_MASK)))
         || (event->length == 0)
         || (keyval == GDK_KEY_Tab))) {
        return FALSE;
    }

    return e_day_view_add_new_event_in_selected_range (day_view, event);
}

/* Select the time that begins a work day*/
static void
e_day_view_goto_start_of_work_day (EDayView *day_view)
{
    ECalModel *model;
    gint work_day_start_hour;
    gint work_day_start_minute;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    work_day_start_hour = e_cal_model_get_work_day_start_hour (model);
    work_day_start_minute = e_cal_model_get_work_day_start_minute (model);

    if (day_view->selection_in_top_canvas)
        return;
    else
        day_view->selection_start_row =
            e_day_view_convert_time_to_row (
            day_view, work_day_start_hour, work_day_start_minute);
    day_view->selection_end_row = day_view->selection_start_row;

    e_day_view_ensure_rows_visible (
        day_view,
        day_view->selection_start_row,
        day_view->selection_end_row);

    e_day_view_update_calendar_selection_time (day_view);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->top_dates_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

/* Select the time that ends a work day*/
static void
e_day_view_goto_end_of_work_day (EDayView *day_view)
{
    ECalModel *model;
    gint work_day_end_hour;
    gint work_day_end_minute;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    work_day_end_hour = e_cal_model_get_work_day_end_hour (model);
    work_day_end_minute = e_cal_model_get_work_day_end_minute (model);

    if (day_view->selection_in_top_canvas)
        return;
    else
        day_view->selection_start_row =
            e_day_view_convert_time_to_row (
            day_view, work_day_end_hour - 1, work_day_end_minute + 30);
    day_view->selection_end_row = day_view->selection_start_row;

    e_day_view_ensure_rows_visible (
        day_view,
        day_view->selection_start_row,
        day_view->selection_end_row);

    e_day_view_update_calendar_selection_time (day_view);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->top_dates_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

/* Change the duration to the time that begins the current work day */
static void
e_day_view_change_duration_to_start_of_work_day (EDayView *day_view)
{
    ECalModel *model;
    gint work_day_start_hour;
    gint work_day_start_minute;

    g_return_if_fail (day_view != NULL);

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    work_day_start_hour = e_cal_model_get_work_day_start_hour (model);
    work_day_start_minute = e_cal_model_get_work_day_start_minute (model);

    if (day_view->selection_in_top_canvas)
        return;
    else {
        /* These are never used after being set? */
        gint work_start_row,selection_start_row;

        work_start_row = e_day_view_convert_time_to_row (
            day_view, work_day_start_hour, work_day_start_minute);
        selection_start_row = day_view->selection_start_row;
        if (selection_start_row < work_start_row)
            day_view->selection_end_row = work_start_row - 1;
        else day_view->selection_start_row = work_start_row;
    }

    e_day_view_ensure_rows_visible (
        day_view,
        day_view->selection_start_row,
        day_view->selection_end_row);

    e_day_view_update_calendar_selection_time (day_view);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->top_dates_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

/* Change the duration to the time that ends the current work day */
static void
e_day_view_change_duration_to_end_of_work_day (EDayView *day_view)
{
    ECalModel *model;
    gint work_day_end_hour;
    gint work_day_end_minute;

    g_return_if_fail (day_view != NULL);

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    work_day_end_hour = e_cal_model_get_work_day_end_hour (model);
    work_day_end_minute = e_cal_model_get_work_day_end_minute (model);

    if (day_view->selection_in_top_canvas)
        return;
    else {
        gint work_end_row,selection_start_row;

        work_end_row = e_day_view_convert_time_to_row (
            day_view, work_day_end_hour - 1, work_day_end_minute + 30);
        selection_start_row = day_view->selection_start_row;
        if (selection_start_row <= work_end_row)
            day_view->selection_end_row = work_end_row;
        else {
            day_view->selection_start_row = work_end_row + 1;
            day_view->selection_end_row = selection_start_row;
        }
    }

    e_day_view_ensure_rows_visible (
        day_view,
        day_view->selection_start_row,
        day_view->selection_end_row);

    e_day_view_update_calendar_selection_time (day_view);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->top_dates_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_cursor_key_up_shifted (EDayView *day_view,
                                  GdkEventKey *event)
{
    gint *row;

    if (day_view->selection_in_top_canvas)
        return;

    if (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START)
        row = &day_view->selection_start_row;
    else
        row = &day_view->selection_end_row;

    if (*row == 0)
        return;

    *row = *row - 1;

    e_day_view_ensure_rows_visible (day_view, *row, *row);

    e_day_view_normalize_selection (day_view);

    e_day_view_update_calendar_selection_time (day_view);

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

/**
 * e_day_view_get_extreme_event
 * @day_view: the day view widget operates on
 * @start_day, @end_day: range of search, both inclusive
 * @first: %TURE indicate to return the data for the first event in the range,
 *         %FALSE to return data for the last event in the range.
 * @day_out: out value, day of the event found. -1 for no event found.
 * @event_num_out: out value, event number of the event found.
 *                  -1 for no event found.
 *
 * Get day and event_num value for the first or last event found in the day range.
 *
 * Return value: %TRUE, if a event found.
 **/
static gboolean
e_day_view_get_extreme_event (EDayView *day_view,
                              gint start_day,
                              gint end_day,
                              gboolean first,
                              gint *day_out,
                              gint *event_num_out)
{
    gint loop_day;

    g_return_val_if_fail (day_view != NULL, FALSE);
    g_return_val_if_fail (start_day >= 0, FALSE);
    g_return_val_if_fail (end_day <= E_DAY_VIEW_LONG_EVENT, FALSE);
    g_return_val_if_fail (day_out && event_num_out, FALSE);

    if (start_day > end_day)
        return FALSE;
    if (first) {
        for (loop_day = start_day; loop_day <= end_day; ++loop_day)
            if (day_view->events[loop_day]->len > 0) {
                *day_out = loop_day;
                *event_num_out = 0;
                return TRUE;
            }
    }
    else {
        for (loop_day = end_day; loop_day >= start_day; --loop_day)
            if (day_view->events[loop_day]->len > 0) {
                *day_out = loop_day;
                *event_num_out =
                    day_view->events[loop_day]->len - 1;
                return TRUE;
            }
    }
    *day_out = -1;
    *event_num_out = -1;
    return FALSE;
}

/**
 * e_day_view_get_extreme_long_event
 * @day_view: the day view widget operates on
 * @first: %TURE indicate to return the data for the first event in the range,
 *         %FALSE to return data for the last event in the range.
 * @event_num_out: out value, event number of the event found.
 *                  -1 for no event found.
 *
 * Similar to e_day_view_get_extreme_event, but run for long events.
 *
 * Return value: %TRUE, if a event found.
 **/
static gboolean
e_day_view_get_extreme_long_event (EDayView *day_view,
                                   gboolean first,
                                   gint *day_out,
                                   gint *event_num_out)
{
    g_return_val_if_fail (day_view != NULL, FALSE);
    g_return_val_if_fail (day_out && event_num_out, FALSE);

    if (first && (day_view->long_events->len > 0)) {
        *day_out = E_DAY_VIEW_LONG_EVENT;
        *event_num_out = 0;
        return TRUE;
    }
    if ((!first) && (day_view->long_events->len > 0)) {
        *day_out = E_DAY_VIEW_LONG_EVENT;
        *event_num_out = day_view->long_events->len - 1;
        return TRUE;
    }
    *day_out = -1;
    *event_num_out = -1;
    return FALSE;
}

/**
 * e_day_view_get_next_tab_event
 * @day_view: the day view widget operates on
 * @direction: GTK_DIR_TAB_BACKWARD or GTK_DIR_TAB_FORWARD
 * @day_out: out value, day of the event found. -1 for no event found.
 * @event_num_out: out value, event number of the event found.
 *                  -1 for no event found.
 *
 * Decide on which event the focus should go next.
 * if ((day_out == -1) && (event_num_out == -1)) is true, focus should go
 * to day_view widget itself.
 *
 * Return value: %TRUE, if a event found.
 **/
static gboolean
e_day_view_get_next_tab_event (EDayView *day_view,
                               GtkDirectionType direction,
                               gint *day_out,
                               gint *event_num_out)
{
    gint new_day;
    gint new_event_num;
    gint days_shown;

    g_return_val_if_fail (day_view != NULL, FALSE);
    g_return_val_if_fail (day_out != NULL, FALSE);
    g_return_val_if_fail (event_num_out != NULL, FALSE);

    days_shown = e_day_view_get_days_shown (day_view);
    *day_out = -1;
    *event_num_out = -1;

    g_return_val_if_fail (days_shown > 0, FALSE);

    switch (direction) {
    case GTK_DIR_TAB_BACKWARD:
        new_event_num = day_view->editing_event_num - 1;
        break;
    case GTK_DIR_TAB_FORWARD:
        new_event_num = day_view->editing_event_num + 1;
        break;
    default:
        return FALSE;
    }

    new_day = day_view->editing_event_day;

    /* not current editing event, set to first long event if there is one
     */
    if (new_day == -1) {
        if (direction == GTK_DIR_TAB_FORWARD) {
            if (e_day_view_get_extreme_long_event (day_view, TRUE,
                                   day_out,
                                   event_num_out))
                return TRUE;

            /* no long event, set to first event if there is
             */
            e_day_view_get_extreme_event (
                day_view, 0,
                days_shown - 1, TRUE,
                day_out, event_num_out);
            /* go to event if found, or day view widget
             */
            return TRUE;
        }
        else {
            if (e_day_view_get_extreme_event (day_view, 0,
                              days_shown - 1, FALSE,
                              day_out, event_num_out))
                return TRUE;

            /* no event, set to last long event if there is
             */
            e_day_view_get_extreme_long_event (
                day_view, FALSE,
                day_out,
                event_num_out);

            /* go to long event if found, or day view widget
             */
            return TRUE;
        }
    }
    /* go backward from the first long event */
    else if ((new_day == E_DAY_VIEW_LONG_EVENT) && (new_event_num < 0)) {
        /* let focus go to day view widget in this case
         */
        return TRUE;
    }
    /* go forward from the last long event */
    else if ((new_day == E_DAY_VIEW_LONG_EVENT) &&
         (new_event_num >= day_view->long_events->len)) {
        e_day_view_get_extreme_event (
            day_view, 0,
            days_shown - 1, TRUE,
            day_out, event_num_out);
        /* go to the next main item event if found or day view widget
         */
        return TRUE;
    }

    /* go backward from the first event in current editting day */
    else if ((new_day < E_DAY_VIEW_LONG_EVENT) && (new_event_num < 0)) {
        /* try to find a event from the previous day in days shown
         */
        if (e_day_view_get_extreme_event (day_view, 0,
                          new_day - 1, FALSE,
                          day_out, event_num_out))
            return TRUE;
        /* try to find a long event
         */
        e_day_view_get_extreme_long_event (
            day_view, FALSE,
            day_out, event_num_out);
        /* go to a long event if found, or day view widget
         */
        return TRUE;
    }
    /* go forward from the last event in current editting day */
    else if ((new_day < E_DAY_VIEW_LONG_EVENT) &&
         (new_event_num >= day_view->events[new_day]->len)) {
        /* try to find a event from the next day in days shown
         */
        e_day_view_get_extreme_event (
            day_view, (new_day + 1),
            days_shown - 1, TRUE,
            day_out, event_num_out);
        /* go to a event found, or day view widget
         */
        return TRUE;
    }
    /* in the normal case
     */
    *day_out = new_day;
    *event_num_out = new_event_num;
    return TRUE;
}

static void
e_day_view_cursor_key_down_shifted (EDayView *day_view,
                                    GdkEventKey *event)
{
    gint *row;

    if (day_view->selection_in_top_canvas)
        return;

    if (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START)
        row = &day_view->selection_start_row;
    else
        row = &day_view->selection_end_row;

    if (*row >= day_view->rows - 1)
        return;

    *row = *row + 1;

    e_day_view_ensure_rows_visible (day_view, *row, *row);

    e_day_view_normalize_selection (day_view);

    e_day_view_update_calendar_selection_time (day_view);

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_cursor_key_left_shifted (EDayView *day_view,
                                    GdkEventKey *event)
{
    gint *day;

    if (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START)
        day = &day_view->selection_start_day;
    else
        day = &day_view->selection_end_day;

    if (*day == 0)
        return;

    *day = *day - 1;

    e_day_view_normalize_selection (day_view);

    e_day_view_update_calendar_selection_time (day_view);

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_cursor_key_right_shifted (EDayView *day_view,
                                     GdkEventKey *event)
{
    gint *day;

    if (day_view->selection_drag_pos == E_DAY_VIEW_DRAG_START)
        day = &day_view->selection_start_day;
    else
        day = &day_view->selection_end_day;

    if (*day >= day_view->days_shown - 1)
        return;

    *day = *day + 1;

    e_day_view_normalize_selection (day_view);

    e_day_view_update_calendar_selection_time (day_view);

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_cursor_key_up (EDayView *day_view,
                          GdkEventKey *event)
{
    if (day_view->selection_start_day == -1) {
        day_view->selection_start_day = 0;
        day_view->selection_start_row = 0;
    }
    day_view->selection_end_day = day_view->selection_start_day;

    if (day_view->selection_in_top_canvas) {
        return;
    } else if (day_view->selection_start_row == 0) {
        day_view->selection_in_top_canvas = TRUE;
        day_view->selection_start_row = -1;
    } else {
        day_view->selection_start_row--;
    }
    day_view->selection_end_row = day_view->selection_start_row;

    if (!day_view->selection_in_top_canvas)
        e_day_view_ensure_rows_visible (
            day_view,
            day_view->selection_start_row,
            day_view->selection_end_row);

    g_signal_emit_by_name (day_view, "selected_time_changed");
    e_day_view_update_calendar_selection_time (day_view);

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_cursor_key_down (EDayView *day_view,
                            GdkEventKey *event)
{
    if (day_view->selection_start_day == -1) {
        day_view->selection_start_day = 0;
        day_view->selection_start_row = 0;
    }
    day_view->selection_end_day = day_view->selection_start_day;

    if (day_view->selection_in_top_canvas) {
        day_view->selection_in_top_canvas = FALSE;
        day_view->selection_start_row = 0;
    } else if (day_view->selection_start_row >= day_view->rows - 1) {
        return;
    } else {
        day_view->selection_start_row++;
    }
    day_view->selection_end_row = day_view->selection_start_row;

    if (!day_view->selection_in_top_canvas)
        e_day_view_ensure_rows_visible (
            day_view,
                        day_view->selection_start_row,
                        day_view->selection_end_row);

    g_signal_emit_by_name (day_view, "selected_time_changed");
    e_day_view_update_calendar_selection_time (day_view);

    /* FIXME: Optimise? */
    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
}

static void
e_day_view_cursor_key_left (EDayView *day_view,
                            GdkEventKey *event)
{
    if (day_view->selection_start_day == 0) {
        gnome_calendar_previous (e_calendar_view_get_calendar (E_CALENDAR_VIEW (day_view)));
    } else {
        day_view->selection_start_day--;
        day_view->selection_end_day--;

        e_day_view_update_calendar_selection_time (day_view);

        /* FIXME: Optimise? */
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
    g_signal_emit_by_name (day_view, "selected_time_changed");
}

static void
e_day_view_cursor_key_right (EDayView *day_view,
                             GdkEventKey *event)
{
    if (day_view->selection_end_day == day_view->days_shown - 1) {
        gnome_calendar_next (e_calendar_view_get_calendar (E_CALENDAR_VIEW (day_view)));
    } else {
        day_view->selection_start_day++;
        day_view->selection_end_day++;

        e_day_view_update_calendar_selection_time (day_view);

        /* FIXME: Optimise? */
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
    }
    g_signal_emit_by_name (day_view, "selected_time_changed");
}

/* Scrolls the main canvas up or down. The pages_to_scroll argument
 * is multiplied with the adjustment's page size and added to the adjustment's
 * value, while ensuring we stay within the bounds. A positive value will
 * scroll the canvas down and a negative value will scroll it up. */
static void
e_day_view_scroll (EDayView *day_view,
                   gfloat pages_to_scroll)
{
    GtkAdjustment *adjustment;
    GtkScrollable *scrollable;
    gdouble new_value;
    gdouble page_size;
    gdouble lower;
    gdouble upper;
    gdouble value;

    scrollable = GTK_SCROLLABLE (day_view->main_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);

    page_size = gtk_adjustment_get_page_size (adjustment);
    lower = gtk_adjustment_get_lower (adjustment);
    upper = gtk_adjustment_get_upper (adjustment);
    value = gtk_adjustment_get_value (adjustment);

    new_value = value - page_size * pages_to_scroll;
    new_value = CLAMP (new_value, lower, upper - page_size);
    gtk_adjustment_set_value (adjustment, new_value);
}

static void
e_day_view_top_scroll (EDayView *day_view,
                       gfloat pages_to_scroll)
{
    GtkAdjustment *adjustment;
    GtkScrollable *scrollable;
    gdouble new_value;
    gdouble page_size;
    gdouble lower;
    gdouble upper;
    gdouble value;

    scrollable = GTK_SCROLLABLE (day_view->top_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);

    page_size = gtk_adjustment_get_page_size (adjustment);
    lower = gtk_adjustment_get_lower (adjustment);
    upper = gtk_adjustment_get_upper (adjustment);
    value = gtk_adjustment_get_value (adjustment);

    new_value = value - page_size * pages_to_scroll;
    new_value = CLAMP (new_value, lower, upper - page_size);
    gtk_adjustment_set_value (adjustment, new_value);
}

void
e_day_view_ensure_rows_visible (EDayView *day_view,
                                gint start_row,
                                gint end_row)
{
    GtkAdjustment *adjustment;
    GtkScrollable *scrollable;
    gdouble max_value;
    gdouble min_value;
    gdouble page_size;
    gdouble value;

    scrollable = GTK_SCROLLABLE (day_view->main_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);

    value = gtk_adjustment_get_value (adjustment);
    page_size = gtk_adjustment_get_page_size (adjustment);

    min_value = (end_row + 1) * day_view->row_height - page_size;
    if (value < min_value)
        value = min_value;

    max_value = start_row * day_view->row_height;
    if (value > max_value)
        value = max_value;

    gtk_adjustment_set_value (adjustment, value);
}

static void
e_day_view_start_editing_event (EDayView *day_view,
                                gint day,
                                gint event_num,
                                GdkEventKey *key_event)
{
    EDayViewEvent *event;
    ETextEventProcessor *event_processor = NULL;
    ETextEventProcessorCommand command;

    /* If we are already editing the event, just return. */
    if (day == day_view->editing_event_day
        && event_num == day_view->editing_event_num)
        return;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day], EDayViewEvent,
                    event_num);
    }

    if (!is_comp_data_valid (event))
        return;

    if (e_client_is_readonly (E_CLIENT (event->comp_data->client)))
        return;

    /* If the event is not shown, don't try to edit it. */
    if (!event->canvas_item)
        return;

    /* We must grab the focus before setting the initial text, since
     * grabbing the focus will result in a call to
     * e_day_view_on_editing_started (), which will reset the text to get
     * rid of the start and end times. */
    e_canvas_item_grab_focus (event->canvas_item, TRUE);

    if (key_event) {
        if (gtk_im_context_filter_keypress (((EText *)(event->canvas_item))->im_context, key_event)) {
            ((EText *)(event->canvas_item))->need_im_reset = TRUE;
        }
        else {
            gchar *initial_text;

            initial_text = e_utf8_from_gtk_event_key (GTK_WIDGET (day_view), key_event->keyval, key_event->string);
            gnome_canvas_item_set (
                event->canvas_item,
                "text", initial_text,
                NULL);
            if (initial_text)
                g_free (initial_text);
        }
    }

    /* Try to move the cursor to the end of the text. */
    g_object_get (
        event->canvas_item,
        "event_processor", &event_processor,
        NULL);
    if (event_processor) {
        command.action = E_TEP_MOVE;
        command.position = E_TEP_END_OF_BUFFER;
        g_signal_emit_by_name (
            event_processor,
            "command", &command);
    }
}

/* This stops the current edit. If accept is TRUE the event summary is updated,
 * else the edit is cancelled. */
static void
e_day_view_stop_editing_event (EDayView *day_view)
{
    GtkWidget *toplevel;

    /* Check we are editing an event. */
    if (day_view->editing_event_day == -1)
        return;

    /* Set focus to the toplevel so the item loses focus. */
    toplevel = gtk_widget_get_toplevel (GTK_WIDGET (day_view));
    if (toplevel && GTK_IS_WINDOW (toplevel))
        gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
}

/* Cancels the current edition by resetting the appointment's text to its original value */
static void
cancel_editing (EDayView *day_view)
{
    gint day, event_num;
    EDayViewEvent *event;
    const gchar *summary;

    day = day_view->editing_event_day;
    event_num = day_view->editing_event_num;

    g_return_if_fail (day != -1);

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent, event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day], EDayViewEvent, event_num);
    }

    if (!is_comp_data_valid (event))
        return;

    /* Reset the text to what was in the component */

    summary = icalcomponent_get_summary (event->comp_data->icalcomp);
    g_object_set (
        event->canvas_item,
        "text", summary ? summary : "",
        NULL);

    /* Stop editing */
    e_day_view_stop_editing_event (day_view);
}

static EDayViewEvent *
tooltip_get_view_event (EDayView *day_view,
                        gint day,
                        gint event_num)
{
    EDayViewEvent *pevent;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return  NULL;

        pevent = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return NULL;

        pevent = &g_array_index (day_view->events[day], EDayViewEvent,
                    event_num);
    }

    return pevent;
}

static void
tooltip_destroy (EDayView *day_view,
                 GnomeCanvasItem *item)
{
    GtkWidget *tooltip = g_object_get_data (G_OBJECT (day_view), "tooltip-window");

    if (tooltip) {
        gtk_widget_destroy (tooltip);
        g_object_set_data (G_OBJECT (day_view), "tooltip-window", NULL);
    }

    if (item) {
        EDayViewEvent *pevent;
        gint event_num = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "event-num"));
        gint day = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "event-day"));

        pevent = tooltip_get_view_event (day_view, day, event_num);
        if (pevent) {
            pevent->tooltip = NULL;
            if (pevent->timeout != -1) {
                g_source_remove (pevent->timeout);
                pevent->timeout = -1;
            }
        }
    }
}

static gboolean
e_day_view_on_text_item_event (GnomeCanvasItem *item,
                               GdkEvent *event,
                               EDayView *day_view)
{
    switch (event->type) {
    case GDK_KEY_PRESS:
        tooltip_destroy (day_view, item);
        if (!E_TEXT (item)->preedit_len && event && event->key.keyval == GDK_KEY_Return) {
            day_view->resize_event_num = -1;

            /* We set the keyboard focus to the EDayView, so the
             * EText item loses it and stops the edit. */
            gtk_widget_grab_focus (GTK_WIDGET (day_view));

            /* Stop the signal last or we will also stop any
             * other events getting to the EText item. */
            g_signal_stop_emission_by_name (item, "event");
            return TRUE;
        } else if (event->key.keyval == GDK_KEY_Escape) {
            cancel_editing (day_view);
            g_signal_stop_emission_by_name (item, "event");
            /* focus should go to day view when stop editing */
            gtk_widget_grab_focus (GTK_WIDGET (day_view));
            return TRUE;
           } else if ((event->key.keyval == GDK_KEY_Up)
              && (event->key.state & GDK_SHIFT_MASK)
              && (event->key.state & GDK_CONTROL_MASK)
              && !(event->key.state & GDK_MOD1_MASK)) {
               e_day_view_change_event_end_time_up (day_view);
               return TRUE;
           } else if ((event->key.keyval == GDK_KEY_Down)
              && (event->key.state & GDK_SHIFT_MASK)
              && (event->key.state & GDK_CONTROL_MASK)
              && !(event->key.state & GDK_MOD1_MASK)) {
               e_day_view_change_event_end_time_down (day_view);
               return TRUE;
        }
        break;
    case GDK_2BUTTON_PRESS:
        break;

    case GDK_BUTTON_RELEASE:
            if (day_view->resize_event_num != -1)
                day_view->resize_event_num = -1;

            if (day_view->drag_event_num != -1)
                day_view->drag_event_num = -1;

    case GDK_BUTTON_PRESS:
        tooltip_destroy (day_view, item);
        /* Only let the EText handle the event while editing. */
        if (!E_TEXT (item)->editing)
            g_signal_stop_emission_by_name (item, "event");
        break;
    case GDK_FOCUS_CHANGE:
        if (event->focus_change.in)
            e_day_view_on_editing_started (day_view, item);
        else
            e_day_view_on_editing_stopped (day_view, item);

        return FALSE;
    case GDK_ENTER_NOTIFY:
        {
            EDayViewEvent *pevent;
            ECalendarViewEventData *data;
            gint event_x, event_y, row, day, event_num;
            ECalendarViewPosition pos;
            gboolean main_canvas = TRUE;
            GdkWindow *window;
            GtkLayout *layout;

            if (day_view->editing_event_num != -1)
                break;

            if (day_view->resize_event_num != -1)
                break;

            if (day_view->drag_event_num != -1)
                break;

            /* Convert the coords to the main canvas window, or return if the
             * window is not found. */
            layout = GTK_LAYOUT (day_view->main_canvas);
            window = gtk_layout_get_bin_window (layout);
            if (!e_day_view_convert_event_coords (
                day_view, (GdkEvent *) event,
                window, &event_x, &event_y)) {

                main_canvas = FALSE;

                layout = GTK_LAYOUT (day_view->top_canvas);
                window = gtk_layout_get_bin_window (layout);
                if (!e_day_view_convert_event_coords (
                    day_view, (GdkEvent *) event,
                    window, &event_x, &event_y))  {
                    return FALSE;
                }
            }
            /* Find out where the mouse is. */
            if (main_canvas) {
                pos = e_day_view_convert_position_in_main_canvas (
                    day_view,
                    event_x, event_y,
                    &day, &row,
                    &event_num);
            } else {
                gint tmp;

                pos = e_day_view_convert_position_in_top_canvas (
                    day_view,
                    event_x, event_y,
                    &tmp, &event_num);
                day = E_DAY_VIEW_LONG_EVENT;
            }

            if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
                break;

            /* even when returns position inside, or other, then the day and/or event_num
             * can be unknown, thus check for this here, otherwise it will crash later */
            if (day == -1 || event_num == -1)
                break;

            pevent = tooltip_get_view_event (day_view, day, event_num);
            if (!pevent)
                break;

            g_object_set_data (G_OBJECT (item), "event-num", GINT_TO_POINTER (event_num));
            g_object_set_data (G_OBJECT (item), "event-day", GINT_TO_POINTER (day));

            data = g_malloc (sizeof (ECalendarViewEventData));
            pevent->x = ((GdkEventCrossing *) event)->x_root;
            pevent->y = ((GdkEventCrossing *) event)->y_root;
            pevent->tooltip = NULL;

            data->cal_view = (ECalendarView *) day_view;
            data->day = day;
            data->event_num = event_num;
            data->get_view_event = (ECalendarViewEvent * (*)(ECalendarView *, int, gint)) tooltip_get_view_event;
            pevent->timeout = g_timeout_add_full (
                G_PRIORITY_DEFAULT, 500,
                (GSourceFunc) e_calendar_view_get_tooltips,
                data, (GDestroyNotify) g_free);

        return TRUE;
        }
    case GDK_LEAVE_NOTIFY:
        tooltip_destroy (day_view, item);
        return TRUE;
    case GDK_MOTION_NOTIFY:
        {
            EDayViewEvent *pevent;
            gint event_num = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "event-num"));
            gint day = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "event-day"));

            pevent = tooltip_get_view_event (day_view, day, event_num);
            if (!pevent)
                break;

            pevent->x = ((GdkEventMotion *) event)->x_root;
            pevent->y = ((GdkEventMotion *) event)->y_root;
            pevent->tooltip = (GtkWidget *) g_object_get_data (G_OBJECT (day_view), "tooltip-window");

            if (pevent->tooltip) {
                e_calendar_view_move_tip (pevent->tooltip, pevent->x + 16, pevent->y + 16);
            }

            return TRUE;
        }
    default:
        break;
    }

    return FALSE;
}

static gboolean
e_day_view_event_move (ECalendarView *cal_view,
                       ECalViewMoveDirection direction)
{
    EDayViewEvent *event;
    EDayView *day_view;
    gint time_divisions;
    gint day, event_num, resize_start_row, resize_end_row;
    time_t start_dt, end_dt;
    struct icaltimetype start_time, end_time;

    day_view = E_DAY_VIEW (cal_view);
    day = day_view->editing_event_day;
    event_num = day_view->editing_event_num;

    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    if ((day == -1) || (day == E_DAY_VIEW_LONG_EVENT))
        return FALSE;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return FALSE;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);
    day_view->resize_event_day = day;
    day_view->resize_event_num = event_num;
    day_view->resize_bars_event_day = day;
    day_view->resize_bars_event_num = event_num;
    resize_start_row = event->start_minute / time_divisions;
    resize_end_row = (event->end_minute - 1) / time_divisions;
    if (resize_end_row < resize_start_row)
        resize_end_row = resize_start_row;

    switch (direction) {
    case E_CAL_VIEW_MOVE_UP:
        if (resize_start_row <= 0)
            return FALSE;
        resize_start_row--;
        resize_end_row--;
        start_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_start_row);
        end_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_end_row + 1);
        break;
    case E_CAL_VIEW_MOVE_DOWN:
        if (resize_end_row >= day_view->rows - 1)
            return FALSE;
        resize_start_row++;
        resize_end_row++;
        start_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_start_row);
        end_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_end_row + 1);
        break;
    case E_CAL_VIEW_MOVE_LEFT:
        if (day <= 0)
            return TRUE;
        start_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_start_row);
        end_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_end_row + 1);
        start_time = icaltime_from_timet (start_dt, 0);
        end_time = icaltime_from_timet (end_dt, 0);
        icaltime_adjust (&start_time ,-1,0,0,0);
        icaltime_adjust (&end_time ,-1,0,0,0);
        start_dt = icaltime_as_timet (start_time);
        end_dt = icaltime_as_timet (end_time);
        break;
    case E_CAL_VIEW_MOVE_RIGHT:
        if (day + 1 >= day_view->days_shown)
            return TRUE;
        start_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_start_row);
        end_dt = e_day_view_convert_grid_position_to_time (day_view, day, resize_end_row + 1);
        start_time = icaltime_from_timet (start_dt, 0);
        end_time = icaltime_from_timet (end_dt, 0);
        icaltime_adjust (&start_time ,1,0,0,0);
        icaltime_adjust (&end_time ,1,0,0,0);
        start_dt = icaltime_as_timet (start_time);
        end_dt = icaltime_as_timet (end_time);
        break;
    default:
        return FALSE;
    }

    e_day_view_change_event_time (day_view, start_dt, end_dt);
    e_day_view_ensure_rows_visible (day_view, resize_start_row, resize_end_row);

    return TRUE;
}

static void
e_day_view_change_event_time (EDayView *day_view,
                              time_t start_dt,
                              time_t end_dt)
{
    EDayViewEvent *event;
    gint day, event_num;
    ECalComponent *comp;
    ECalComponentDateTime date;
    struct icaltimetype itt;
    ECalModel *model;
    ECalClient *client;
    ESourceRegistry *registry;
    CalObjModType mod = CALOBJ_MOD_ALL;
    GtkWindow *toplevel;

    day = day_view->editing_event_day;
    event_num = day_view->editing_event_num;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    registry = e_cal_model_get_registry (model);

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);

    if (!is_comp_data_valid (event))
        return;

    client = event->comp_data->client;

    /* We use a temporary shallow copy of the ico since we don't want to
     * change the original ico here. Otherwise we would not detect that
     * the event's time had changed in the "update_event" callback. */
    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

    if (e_cal_component_has_attendees (comp) &&
        !itip_organizer_is_user (registry, comp, client)) {
        g_object_unref (comp);
        return;
    }

    date.value = &itt;
    /* FIXME: Should probably keep the timezone of the original start
     * and end times. */
    date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

    *date.value = icaltime_from_timet_with_zone (start_dt, FALSE,
                             e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    cal_comp_set_dtstart_with_oldzone (client, comp, &date);
    *date.value = icaltime_from_timet_with_zone (end_dt, FALSE,
                             e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    cal_comp_set_dtend_with_oldzone (client, comp, &date);

    e_cal_component_commit_sequence (comp);

    if (day_view->last_edited_comp_string != NULL) {
        g_free (day_view->last_edited_comp_string);
        day_view->last_edited_comp_string = NULL;
    }

    day_view->last_edited_comp_string = e_cal_component_get_as_string (comp);

    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_NONE;

    if (e_cal_component_has_recurrences (comp)) {
        if (!recur_component_dialog (client, comp, &mod, NULL, FALSE)) {
            gtk_widget_queue_draw (day_view->top_canvas);
            goto out;
        }

        if (mod == CALOBJ_MOD_ALL)
            comp_util_sanitize_recurrence_master (comp, client);

        if (mod == CALOBJ_MOD_THIS) {
            e_cal_component_set_rdate_list (comp, NULL);
            e_cal_component_set_rrule_list (comp, NULL);
            e_cal_component_set_exdate_list (comp, NULL);
            e_cal_component_set_exrule_list (comp, NULL);
        }
    } else if (e_cal_component_is_instance (comp))
        mod = CALOBJ_MOD_THIS;

    toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (day_view)));

    e_cal_component_commit_sequence (comp);

    e_calendar_view_modify_and_send (
        E_CALENDAR_VIEW (day_view),
        comp, client, mod, toplevel, TRUE);

out:
    g_object_unref (comp);
}

static void
e_day_view_change_event_end_time_up (EDayView *day_view)
{
    EDayViewEvent *event;
    ECalendarView *cal_view;
    gint time_divisions;
    gint day, event_num, resize_start_row, resize_end_row;

    day = day_view->editing_event_day;
    event_num = day_view->editing_event_num;
    if ((day == -1) || (day == E_DAY_VIEW_LONG_EVENT))
        return;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);
    day_view->resize_event_day = day;
    day_view->resize_event_num = event_num;
    day_view->resize_bars_event_day = day;
    day_view->resize_bars_event_num = event_num;
    resize_start_row = event->start_minute / time_divisions;
    resize_end_row = (event->end_minute - 1) / time_divisions;
    if (resize_end_row < resize_start_row)
        resize_end_row = resize_start_row;
    if (resize_end_row == resize_start_row)
        return;
    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_BOTTOM_EDGE;
    resize_end_row--;
    day_view->resize_start_row = resize_start_row;
    day_view->resize_end_row = resize_end_row;
    e_day_view_finish_resize (day_view);
    e_day_view_ensure_rows_visible (day_view, resize_start_row, resize_end_row);
}

static void
e_day_view_change_event_end_time_down (EDayView *day_view)
{
    EDayViewEvent *event;
    ECalendarView *cal_view;
    gint time_divisions;
    gint day, event_num, resize_start_row, resize_end_row;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    day = day_view->editing_event_day;
    event_num = day_view->editing_event_num;
    if ((day == -1) || (day == E_DAY_VIEW_LONG_EVENT))
        return;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);
    day_view->resize_event_day = day;
    day_view->resize_event_num = event_num;
    day_view->resize_bars_event_day = day;
    day_view->resize_bars_event_num = event_num;
    resize_start_row = event->start_minute / time_divisions;
    resize_end_row = (event->end_minute - 1) / time_divisions;
    if (resize_end_row < resize_start_row)
        resize_end_row = resize_start_row;
    if (resize_end_row == day_view->rows -1)
        return;
    day_view->resize_drag_pos = E_CALENDAR_VIEW_POS_BOTTOM_EDGE;
    resize_end_row++;
    day_view->resize_start_row = resize_start_row;
    day_view->resize_end_row = resize_end_row;
    e_day_view_finish_resize (day_view);
    e_day_view_ensure_rows_visible (day_view, resize_start_row, resize_end_row);
}

static void
e_day_view_on_editing_started (EDayView *day_view,
                               GnomeCanvasItem *item)
{
    GtkAllocation allocation;
    gint day, event_num;

    if (!e_day_view_find_event_from_item (day_view, item,
                          &day, &event_num))
        return;

    /* FIXME: This is a temporary workaround for a bug which seems to stop
     * us getting focus_out signals. It is not a complete fix since if we
     * don't get focus_out signals we don't save the appointment text so
     * this may be lost. */
    if (day_view->editing_event_day == day
        && day_view->editing_event_num == event_num)
        return;

    day_view->editing_event_day = day;
    day_view->editing_event_num = event_num;

    gtk_widget_get_allocation (day_view->top_canvas, &allocation);

    if (day == E_DAY_VIEW_LONG_EVENT) {
        gint item_x, item_y, item_w, item_h, scroll_y;
        gint start_day, end_day;

        e_day_view_reshape_long_event (day_view, event_num);

        if (e_day_view_get_long_event_position (day_view, event_num,
                               &start_day, &end_day,
                               &item_x, &item_y,
                               &item_w, &item_h)) {
            GtkAdjustment *adjustment;
            GtkScrollable *scrollable;

            scrollable = GTK_SCROLLABLE (day_view->top_canvas);
            adjustment = gtk_scrollable_get_vadjustment (scrollable);

            /* and ensure it's visible too */
            /*item_y = (event_num * (day_view->top_row_height + 1)) - 1;*/
            scroll_y = gtk_adjustment_get_value (adjustment);
            if (item_y + day_view->top_row_height > allocation.height + scroll_y || item_y < scroll_y)
                gnome_canvas_scroll_to (GNOME_CANVAS (day_view->top_canvas), 0, item_y);
        }
    } else {
        day_view->resize_bars_event_day = day;
        day_view->resize_bars_event_num = event_num;
        e_day_view_update_event_label (day_view, day, event_num);
        e_day_view_reshape_main_canvas_resize_bars (day_view);
    }

    g_signal_emit_by_name (day_view, "selection_changed");
}

static void
e_day_view_on_editing_stopped (EDayView *day_view,
                               GnomeCanvasItem *item)
{
    gint day, event_num;
    EDayViewEvent *event;
    gchar *text = NULL;
    ECalComponentText summary;
    ECalComponent *comp;
    ECalClient *client;
    gboolean on_server;

    /* Note: the item we are passed here isn't reliable, so we just stop
     * the edit of whatever item was being edited. We also receive this
     * event twice for some reason. */
    day = day_view->editing_event_day;
    event_num = day_view->editing_event_num;

    /* If no item is being edited, just return. */
    if (day == -1)
        return;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day], EDayViewEvent,
                    event_num);

    }

    if (!is_comp_data_valid (event))
        return;

    /* Reset the edit fields. */
    day_view->editing_event_day = -1;
    day_view->editing_event_num = -1;

    day_view->resize_bars_event_day = -1;
    day_view->resize_bars_event_num = -1;

    g_object_set (event->canvas_item, "handle_popup", FALSE, NULL);
    g_object_get (
        event->canvas_item,
        "text", &text,
        NULL);
    g_return_if_fail (text != NULL);

    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

    client = event->comp_data->client;
    on_server = cal_comp_is_on_server (comp, client);

    if (string_is_empty (text) && !on_server) {
        const gchar *uid;

        e_cal_component_get_uid (comp, &uid);

        e_day_view_foreach_event_with_uid (day_view, uid,
                           e_day_view_remove_event_cb, NULL);
        e_day_view_check_layout (day_view);
        gtk_widget_queue_draw (day_view->top_canvas);
        gtk_widget_queue_draw (day_view->main_canvas);
        goto out;
    }

    /* Only update the summary if necessary. */
    e_cal_component_get_summary (comp, &summary);
    if (summary.value && !strcmp (text, summary.value)) {
        if (day == E_DAY_VIEW_LONG_EVENT)
            e_day_view_reshape_long_event (day_view, event_num);
        else
            e_day_view_update_event_label (
                day_view, day,
                event_num);
    } else if (summary.value || !string_is_empty (text)) {
        icalcomponent *icalcomp = e_cal_component_get_icalcomponent (comp);

        summary.value = text;
        summary.altrep = NULL;
        e_cal_component_set_summary (comp, &summary);
        e_cal_component_commit_sequence (comp);

        if (!on_server) {
            gchar *uid = NULL;
            GError *error = NULL;

            e_cal_client_create_object_sync (
                client, icalcomp, &uid, NULL, &error);

            if (error != NULL) {
                uid = NULL;
                g_warning (
                    "%s: Could not create the object! %s",
                    G_STRFUNC, error->message);
                g_error_free (error);
            } else {
                icalcomponent_set_uid (icalcomp, uid);
                e_calendar_view_emit_user_created (
                    E_CALENDAR_VIEW (day_view), client);
            }

            g_free (uid);

            /* we remove the object since we either got the update from the server or failed */
            e_day_view_remove_event_cb (day_view, day, event_num, NULL);
        } else {
            CalObjModType mod = CALOBJ_MOD_ALL;
            GtkWindow *toplevel;
            if (e_cal_component_has_recurrences (comp)) {
                if (!recur_component_dialog (client, comp, &mod, NULL, FALSE)) {
                    goto out;
                }

                if (mod == CALOBJ_MOD_ALL)
                    comp_util_sanitize_recurrence_master (comp, client);

                if (mod == CALOBJ_MOD_THIS) {
                    ECalComponentDateTime olddt, dt;
                    icaltimetype itt;

                    dt.value = &itt;

                    e_cal_component_get_dtstart (comp, &olddt);
                    if (olddt.value->zone) {
                        *dt.value = icaltime_from_timet_with_zone (
                            event->comp_data->instance_start,
                            olddt.value->is_date,
                            olddt.value->zone);
                    } else {
                        *dt.value = icaltime_from_timet_with_zone (
                            event->comp_data->instance_start,
                            olddt.value->is_date,
                            e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
                    }
                    dt.tzid = olddt.tzid;
                    e_cal_component_set_dtstart (comp, &dt);
                    dt.tzid = NULL;
                    e_cal_component_free_datetime (&olddt);

                    e_cal_component_get_dtend (comp, &olddt);
                    if (olddt.value->zone) {
                        *dt.value = icaltime_from_timet_with_zone (
                            event->comp_data->instance_end,
                            olddt.value->is_date,
                            olddt.value->zone);
                    } else {
                        *dt.value = icaltime_from_timet_with_zone (
                            event->comp_data->instance_end,
                            olddt.value->is_date,
                            e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
                    }
                    dt.tzid = olddt.tzid;
                    e_cal_component_set_dtend (comp, &dt);
                    dt.tzid = NULL;
                    e_cal_component_free_datetime (&olddt);

                    e_cal_component_set_rdate_list (comp, NULL);
                    e_cal_component_set_rrule_list (comp, NULL);
                    e_cal_component_set_exdate_list (comp, NULL);
                    e_cal_component_set_exrule_list (comp, NULL);

                    e_cal_component_commit_sequence (comp);
                }
            } else if (e_cal_component_is_instance (comp))
                mod = CALOBJ_MOD_THIS;

            /* FIXME When sending here, what exactly should we send? */
            toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (day_view)));

            e_calendar_view_modify_and_send (
                E_CALENDAR_VIEW (day_view),
                comp, client, mod, toplevel, FALSE);
        }

    }
    gtk_widget_queue_draw (day_view->main_canvas);

 out:

    g_object_unref (comp);
    g_free (text);

    g_signal_emit_by_name (day_view, "selection_changed");
}

/* FIXME: It is possible that we may produce an invalid time due to daylight
 * saving times (i.e. when clocks go forward there is a range of time which
 * is not valid). I don't know the best way to handle daylight saving time. */
static time_t
e_day_view_convert_grid_position_to_time (EDayView *day_view,
                                          gint col,
                                          gint row)
{
    ECalendarView *cal_view;
    gint time_divisions;
    struct icaltimetype tt;
    time_t val;
    gint minutes;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    /* Calulate the number of minutes since the start of the day. */
    minutes = day_view->first_hour_shown * 60
        + day_view->first_minute_shown
        + row * time_divisions;

    /* A special case for midnight, where we can use the start of the
     * next day. */
    if (minutes == 60 * 24)
        return day_view->day_starts[col + 1];

    /* Create an icaltimetype and convert to a time_t. */
    tt = icaltime_from_timet_with_zone (
        day_view->day_starts[col],
        FALSE, e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    tt.hour = minutes / 60;
    tt.minute = minutes % 60;
    tt.second = 0;

    val = icaltime_as_timet_with_zone (tt, e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
    return val;
}

static gboolean
e_day_view_convert_time_to_grid_position (EDayView *day_view,
                                          time_t time,
                                          gint *col,
                                          gint *row)
{
    ECalendarView *cal_view;
    struct icaltimetype tt;
    gint time_divisions;
    gint day, minutes;

    *col = *row = 0;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    if (time < day_view->lower || time >= day_view->upper)
        return FALSE;

    /* We can find the column easily using the day_starts array. */
    for (day = 1; day <= day_view->days_shown; day++) {
        if (time < day_view->day_starts[day]) {
            *col = day - 1;
            break;
        }
    }

    /* To find the row we need to convert the time to an icaltimetype,
     * calculate the offset in minutes from the top of the display and
     * divide it by the mins per row setting. */
    tt = icaltime_from_timet_with_zone (time, FALSE, e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

    minutes = tt.hour * 60 + tt.minute;
    minutes -= day_view->first_hour_shown * 60 + day_view->first_minute_shown;

    *row = minutes / time_divisions;

    if (*row < 0 || *row >= day_view->rows)
        return FALSE;

    return TRUE;
}

/* This starts or stops auto-scrolling when dragging a selection or resizing
 * an event. */
void
e_day_view_check_auto_scroll (EDayView *day_view,
                              gint event_x,
                              gint event_y)
{
    GtkAllocation allocation;
    gint scroll_x, scroll_y;

    gnome_canvas_get_scroll_offsets (
        GNOME_CANVAS (day_view->main_canvas),
        &scroll_x, &scroll_y);

    event_x -= scroll_x;
    event_y -= scroll_y;

    day_view->last_mouse_x = event_x;
    day_view->last_mouse_y = event_y;

    gtk_widget_get_allocation (day_view->main_canvas, &allocation);

    if (event_y < E_DAY_VIEW_AUTO_SCROLL_OFFSET)
        e_day_view_start_auto_scroll (day_view, TRUE);
    else if (event_y >= allocation.height - E_DAY_VIEW_AUTO_SCROLL_OFFSET)
        e_day_view_start_auto_scroll (day_view, FALSE);
    else
        e_day_view_stop_auto_scroll (day_view);
}

static void
e_day_view_start_auto_scroll (EDayView *day_view,
                              gboolean scroll_up)
{
    if (day_view->auto_scroll_timeout_id == 0) {
        day_view->auto_scroll_timeout_id = g_timeout_add (E_DAY_VIEW_AUTO_SCROLL_TIMEOUT, e_day_view_auto_scroll_handler, day_view);
        day_view->auto_scroll_delay = E_DAY_VIEW_AUTO_SCROLL_DELAY;
    }
    day_view->auto_scroll_up = scroll_up;
}

void
e_day_view_stop_auto_scroll (EDayView *day_view)
{
    if (day_view->auto_scroll_timeout_id != 0) {
        g_source_remove (day_view->auto_scroll_timeout_id);
        day_view->auto_scroll_timeout_id = 0;
    }
}

static gboolean
e_day_view_auto_scroll_handler (gpointer data)
{
    EDayView *day_view;
    ECalendarViewPosition pos;
    gint scroll_x, scroll_y, new_scroll_y, canvas_x, canvas_y, row, day;
    GtkAdjustment *adjustment;
    GtkScrollable *scrollable;
    gdouble step_increment;
    gdouble page_size;
    gdouble upper;

    g_return_val_if_fail (E_IS_DAY_VIEW (data), FALSE);

    day_view = E_DAY_VIEW (data);

    if (day_view->auto_scroll_delay > 0) {
        day_view->auto_scroll_delay--;
        return TRUE;
    }

    gnome_canvas_get_scroll_offsets (
        GNOME_CANVAS (day_view->main_canvas),
        &scroll_x, &scroll_y);

    scrollable = GTK_SCROLLABLE (day_view->main_canvas);
    adjustment = gtk_scrollable_get_vadjustment (scrollable);

    step_increment = gtk_adjustment_get_step_increment (adjustment);
    page_size = gtk_adjustment_get_page_size (adjustment);
    upper = gtk_adjustment_get_upper (adjustment);

    if (day_view->auto_scroll_up)
        new_scroll_y = MAX (scroll_y - step_increment, 0);
    else
        new_scroll_y = MIN (
            scroll_y + step_increment,
            upper - page_size);

    if (new_scroll_y != scroll_y) {
        /* NOTE: This reduces flicker, but only works if we don't use
         * canvas items which have X windows. */
        gnome_canvas_scroll_to (
            GNOME_CANVAS (day_view->main_canvas),
            scroll_x, new_scroll_y);
    }

    canvas_x = day_view->last_mouse_x + scroll_x;
    canvas_y = day_view->last_mouse_y + new_scroll_y;

    /* The last_mouse_x position is set to -1 when we are selecting using
     * the time column. In this case we set canvas_x to 0 and we ignore
     * the resulting day. */
    if (day_view->last_mouse_x == -1)
        canvas_x = 0;

    /* Update the selection/resize/drag if necessary. */
    pos = e_day_view_convert_position_in_main_canvas (
        day_view,
        canvas_x, canvas_y,
        &day, &row, NULL);

    if (day_view->last_mouse_x == -1)
        day = -1;

    if (pos != E_CALENDAR_VIEW_POS_OUTSIDE) {
        if (day_view->selection_is_being_dragged) {
            e_day_view_update_selection (day_view, day, row);
        } else if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE) {
            e_day_view_update_resize (day_view, row);
        } else if (day_view->drag_item->flags & GNOME_CANVAS_ITEM_VISIBLE) {
            e_day_view_update_main_canvas_drag (day_view, row, day);
        }
    }

    return TRUE;
}

gboolean
e_day_view_get_event_rows (EDayView *day_view,
                           gint day,
                           gint event_num,
                           gint *start_row_out,
                           gint *end_row_out)
{
    ECalendarView *cal_view;
    EDayViewEvent *event;
    gint time_divisions;
    gint start_row, end_row;

    g_return_val_if_fail (day >= 0, FALSE);
    g_return_val_if_fail (day < E_DAY_VIEW_LONG_EVENT, FALSE);
    g_return_val_if_fail (event_num >= 0, FALSE);

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return FALSE;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);
    start_row = event->start_minute / time_divisions;
    end_row = (event->end_minute - 1) / time_divisions;
    if (end_row < start_row)
        end_row = start_row;

    *start_row_out = start_row;
    *end_row_out = end_row;
    return TRUE;
}

gboolean
e_day_view_get_event_position (EDayView *day_view,
                               gint day,
                               gint event_num,
                               gint *item_x,
                               gint *item_y,
                               gint *item_w,
                               gint *item_h)
{
    EDayViewEvent *event;
    gint start_row, end_row, cols_in_row, start_col, num_columns;

    if (!is_array_index_in_bounds (day_view->events[day], event_num))
        return FALSE;

    event = &g_array_index (day_view->events[day], EDayViewEvent,
                event_num);

    /* If the event is flagged as not displayed, return FALSE. */
    if (event->num_columns == 0)
        return FALSE;

    e_day_view_get_event_rows (day_view, day, event_num, &start_row, &end_row);

    cols_in_row = day_view->cols_per_row[day][start_row];
    start_col = event->start_row_or_col;
    num_columns = event->num_columns;

    if (cols_in_row == 0)
        return FALSE;

    /* If the event is being resize, use the resize position. */
    if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE
        && day_view->resize_event_day == day
        && day_view->resize_event_num == event_num) {
        if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_TOP_EDGE)
            start_row = day_view->resize_start_row;
        else if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_BOTTOM_EDGE)
            end_row = day_view->resize_end_row;
    }

    *item_x = day_view->day_offsets[day]
        + day_view->day_widths[day] * start_col / cols_in_row;
    *item_w = day_view->day_widths[day] * num_columns / cols_in_row
        - E_DAY_VIEW_GAP_WIDTH;
    *item_w = MAX (*item_w, 0);
    *item_y = start_row * day_view->row_height;

    /* This makes the event end on the grid line of the next row,
     * which maybe looks nicer if you have 2 events on consecutive rows. */
    *item_h = (end_row - start_row + 1) * day_view->row_height + 1;

    return TRUE;
}

gboolean
e_day_view_get_long_event_position (EDayView *day_view,
                                    gint event_num,
                                    gint *start_day,
                                    gint *end_day,
                                    gint *item_x,
                                    gint *item_y,
                                    gint *item_w,
                                    gint *item_h)
{
    EDayViewEvent *event;

    if (!is_array_index_in_bounds (day_view->long_events, event_num))
        return FALSE;

    event = &g_array_index (day_view->long_events, EDayViewEvent,
                event_num);

    /* If the event is flagged as not displayed, return FALSE. */
    if (event->num_columns == 0)
        return FALSE;

    if (!e_day_view_find_long_event_days (event,
                          day_view->days_shown,
                          day_view->day_starts,
                          start_day, end_day))
        return FALSE;

    /* If the event is being resize, use the resize position. */
    if (day_view->resize_drag_pos != E_CALENDAR_VIEW_POS_NONE
        && day_view->resize_event_day == E_DAY_VIEW_LONG_EVENT
        && day_view->resize_event_num == event_num) {
        if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_LEFT_EDGE)
            *start_day = day_view->resize_start_row;
        else if (day_view->resize_drag_pos == E_CALENDAR_VIEW_POS_RIGHT_EDGE)
            *end_day = day_view->resize_end_row;
    }

    *item_x = day_view->day_offsets[*start_day] + E_DAY_VIEW_BAR_WIDTH;
    if (day_view->days_shown == 1) {
        GtkAllocation allocation;

        gtk_widget_get_allocation (day_view->top_canvas, &allocation);
        *item_w = allocation.width;
    } else
        *item_w = day_view->day_offsets[*end_day + 1];
    *item_w = MAX (*item_w - *item_x - E_DAY_VIEW_GAP_WIDTH, 0);
    *item_y = (event->start_row_or_col) * day_view->top_row_height;
    *item_h = day_view->top_row_height - E_DAY_VIEW_TOP_CANVAS_Y_GAP;
    return TRUE;
}

/* Converts a position within the entire top canvas to a day & event and
 * a place within the event if appropriate. If event_num_return is NULL, it
 * simply returns the grid position without trying to find the event. */
static ECalendarViewPosition
e_day_view_convert_position_in_top_canvas (EDayView *day_view,
                                           gint x,
                                           gint y,
                                           gint *day_return,
                                           gint *event_num_return)
{
    EDayViewEvent *event;
    gint day, row, col;
    gint event_num, start_day, end_day, item_x, item_y, item_w, item_h;

    *day_return = -1;
    if (event_num_return)
        *event_num_return = -1;

    if (x < 0 || y < 0)
        return E_CALENDAR_VIEW_POS_OUTSIDE;

    row = y / day_view->top_row_height;

    day = -1;
    for (col = 1; col <= day_view->days_shown; col++) {
        if (x < day_view->day_offsets[col]) {
            day = col - 1;
            break;
        }
    }
    if (day == -1)
        return E_CALENDAR_VIEW_POS_OUTSIDE;

    *day_return = day;

    /* If only the grid position is wanted, return. */
    if (event_num_return == NULL)
        return E_CALENDAR_VIEW_POS_NONE;

    for (event_num = 0; event_num < day_view->long_events->len;
         event_num++) {
        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);

        if (event->start_row_or_col != row)
            continue;

        if (!e_day_view_get_long_event_position (day_view, event_num,
                             &start_day, &end_day,
                             &item_x, &item_y,
                             &item_w, &item_h))
            continue;

        if (x < item_x)
            continue;

        if (x >= item_x + item_w)
            continue;

        *event_num_return = event_num;

        if (x < item_x + E_DAY_VIEW_LONG_EVENT_BORDER_WIDTH
            + E_DAY_VIEW_LONG_EVENT_X_PAD)
            return E_CALENDAR_VIEW_POS_LEFT_EDGE;

        if (x >= item_x + item_w - E_DAY_VIEW_LONG_EVENT_BORDER_WIDTH
            - E_DAY_VIEW_LONG_EVENT_X_PAD)
            return E_CALENDAR_VIEW_POS_RIGHT_EDGE;

        return E_CALENDAR_VIEW_POS_EVENT;
    }

    return E_CALENDAR_VIEW_POS_NONE;
}

/* Converts a position within the entire main canvas to a day, row, event and
 * a place within the event if appropriate. If event_num_return is NULL, it
 * simply returns the grid position without trying to find the event. */
static ECalendarViewPosition
e_day_view_convert_position_in_main_canvas (EDayView *day_view,
                                            gint x,
                                            gint y,
                                            gint *day_return,
                                            gint *row_return,
                                            gint *event_num_return)
{
    gint day, row, col, event_num;
    gint item_x, item_y, item_w, item_h;

    *day_return = -1;
    *row_return = -1;
    if (event_num_return)
        *event_num_return = -1;

    /* Check the position is inside the canvas, and determine the day
     * and row. */
    if (x < 0 || y < 0)
        return E_CALENDAR_VIEW_POS_OUTSIDE;

    row = y / day_view->row_height;
    if (row >= day_view->rows)
        return E_CALENDAR_VIEW_POS_OUTSIDE;

    day = -1;
    for (col = 1; col <= day_view->days_shown; col++) {
        if (x < day_view->day_offsets[col]) {
            day = col - 1;
            break;
        }
    }
    if (day == -1)
        return E_CALENDAR_VIEW_POS_OUTSIDE;

    *day_return = day;
    *row_return = row;

    /* If only the grid position is wanted, return. */
    if (event_num_return == NULL)
        return E_CALENDAR_VIEW_POS_NONE;

    /* Check the selected item first, since the horizontal resizing bars
     * may be above other events. */
    if (day_view->resize_bars_event_day == day) {
        if (e_day_view_get_event_position (day_view, day,
                           day_view->resize_bars_event_num,
                           &item_x, &item_y,
                           &item_w, &item_h)) {
            if (x >= item_x && x < item_x + item_w) {
                *event_num_return = day_view->resize_bars_event_num;
                if (y >= item_y - E_DAY_VIEW_BAR_HEIGHT
                    && y < item_y + E_DAY_VIEW_EVENT_BORDER_HEIGHT)
                    return E_CALENDAR_VIEW_POS_TOP_EDGE;
                if (y >= item_y + item_h - E_DAY_VIEW_EVENT_BORDER_HEIGHT
                    && y < item_y + item_h + E_DAY_VIEW_BAR_HEIGHT)
                    return E_CALENDAR_VIEW_POS_BOTTOM_EDGE;
            }
        }
    }

    /* Try to find the event at the found position. */
    *event_num_return = -1;
    for (event_num = 0; event_num < day_view->events[day]->len;
         event_num++) {
        if (!e_day_view_get_event_position (day_view, day, event_num,
                            &item_x, &item_y,
                            &item_w, &item_h))
            continue;

        if (x < item_x || x >= item_x + item_w
            || y < item_y || y >= item_y + item_h)
            continue;

        *event_num_return = event_num;

        if (x < item_x + E_DAY_VIEW_BAR_WIDTH)
            return E_CALENDAR_VIEW_POS_LEFT_EDGE;

        if (y < item_y + E_DAY_VIEW_EVENT_BORDER_HEIGHT
            + E_DAY_VIEW_EVENT_Y_PAD)
            return E_CALENDAR_VIEW_POS_TOP_EDGE;

        if (y >= item_y + item_h - E_DAY_VIEW_EVENT_BORDER_HEIGHT
            - E_DAY_VIEW_EVENT_Y_PAD)
            return E_CALENDAR_VIEW_POS_BOTTOM_EDGE;

        return E_CALENDAR_VIEW_POS_EVENT;
    }

    return E_CALENDAR_VIEW_POS_NONE;
}

static gboolean
e_day_view_on_top_canvas_drag_motion (GtkWidget *widget,
                                      GdkDragContext *context,
                                      gint x,
                                      gint y,
                                      guint time,
                                      EDayView *day_view)
{
    gint scroll_x, scroll_y;

    gnome_canvas_get_scroll_offsets (
        GNOME_CANVAS (widget),
        &scroll_x, &scroll_y);
    day_view->drag_event_x = x + scroll_x;
    day_view->drag_event_y = y + scroll_y;

    e_day_view_reshape_top_canvas_drag_item (day_view);

    return TRUE;
}

static void
e_day_view_reshape_top_canvas_drag_item (EDayView *day_view)
{
    ECalendarViewPosition pos;
    gint x, y, day;

    /* Calculate the day & start row of the event being dragged, using
     * the current mouse position. */
    x = day_view->drag_event_x;
    y = day_view->drag_event_y;
    pos = e_day_view_convert_position_in_top_canvas (
        day_view, x, y,
        &day, NULL);
    /* This shouldn't really happen in a drag. */
    if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
        return;

    if (day_view->drag_event_day == E_DAY_VIEW_LONG_EVENT)
        day -= day_view->drag_event_offset;
    day = MAX (day, 0);

    e_day_view_update_top_canvas_drag (day_view, day);
}

static void
e_day_view_update_top_canvas_drag (EDayView *day_view,
                                   gint day)
{
    EDayViewEvent *event = NULL;
    gint row, num_days, start_day, end_day;
    gdouble item_x, item_y, item_w, item_h;
    gchar *text;

    /* Calculate the event's position. If the event is in the same
     * position we started in, we use the same columns. */
    row = day_view->rows_in_top_display + 1;
    num_days = 1;

    if (day_view->drag_event_day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, day_view->drag_event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    day_view->drag_event_num);
        row = event->start_row_or_col + 1;

        if (!e_day_view_find_long_event_days (event,
                              day_view->days_shown,
                              day_view->day_starts,
                              &start_day, &end_day))
            return;

        num_days = end_day - start_day + 1;

        /* Make sure we don't go off the screen. */
        day = MIN (day, day_view->days_shown - num_days);

    } else if (day_view->drag_event_day != -1) {
        if (!is_array_index_in_bounds (day_view->events[day_view->drag_event_day], day_view->drag_event_num))
            return;

        event = &g_array_index (day_view->events[day_view->drag_event_day],
                    EDayViewEvent,
                    day_view->drag_event_num);
    }

    /* If the position hasn't changed, just return. */
    if (day_view->drag_last_day == day
        && (day_view->drag_long_event_item->flags & GNOME_CANVAS_ITEM_VISIBLE))
        return;

    day_view->drag_last_day = day;

    item_x = day_view->day_offsets[day] + E_DAY_VIEW_BAR_WIDTH;
    item_w = day_view->day_offsets[day + num_days] - item_x
        - E_DAY_VIEW_GAP_WIDTH;
    item_y = row * day_view->top_row_height;
    item_h = day_view->top_row_height - E_DAY_VIEW_TOP_CANVAS_Y_GAP;

    /* Set the positions of the event & associated items. */
    gnome_canvas_item_set (
        day_view->drag_long_event_rect_item,
        "x1", item_x,
        "y1", item_y,
        "x2", item_x + item_w - 1,
        "y2", item_y + item_h - 1,
        NULL);

    gnome_canvas_item_set (
        day_view->drag_long_event_item,
        "clip_width", item_w - (E_DAY_VIEW_LONG_EVENT_BORDER_WIDTH + E_DAY_VIEW_LONG_EVENT_X_PAD) * 2,
        "clip_height", item_h - (E_DAY_VIEW_LONG_EVENT_BORDER_HEIGHT + E_DAY_VIEW_LONG_EVENT_Y_PAD) * 2,
        NULL);
    e_canvas_item_move_absolute (
        day_view->drag_long_event_item,
        item_x + E_DAY_VIEW_LONG_EVENT_BORDER_WIDTH + E_DAY_VIEW_LONG_EVENT_X_PAD,
        item_y + E_DAY_VIEW_LONG_EVENT_BORDER_HEIGHT + E_DAY_VIEW_LONG_EVENT_Y_PAD);

    if (!(day_view->drag_long_event_rect_item->flags & GNOME_CANVAS_ITEM_VISIBLE)) {
        gnome_canvas_item_raise_to_top (day_view->drag_long_event_rect_item);
        gnome_canvas_item_show (day_view->drag_long_event_rect_item);
    }

    /* Set the text, if necessary. We don't want to set the text every
     * time it moves, so we check if it is currently invisible and only
     * set the text then. */
    if (!(day_view->drag_long_event_item->flags & GNOME_CANVAS_ITEM_VISIBLE)) {
        const gchar *summary;

        if (event && is_comp_data_valid (event)) {
            summary = icalcomponent_get_summary (event->comp_data->icalcomp);
            text = g_strdup (summary);
        } else {
            text = NULL;
        }

        gnome_canvas_item_set (
            day_view->drag_long_event_item,
            "text", text ? text : "",
            NULL);
        gnome_canvas_item_raise_to_top (day_view->drag_long_event_item);
        gnome_canvas_item_show (day_view->drag_long_event_item);

        g_free (text);
    }
}

static gboolean
e_day_view_on_main_canvas_drag_motion (GtkWidget *widget,
                                       GdkDragContext *context,
                                       gint x,
                                       gint y,
                                       guint time,
                                       EDayView *day_view)
{
    gint scroll_x, scroll_y;

    gnome_canvas_get_scroll_offsets (
        GNOME_CANVAS (widget),
        &scroll_x, &scroll_y);

    day_view->drag_event_x = x + scroll_x;
    day_view->drag_event_y = y + scroll_y;

    e_day_view_reshape_main_canvas_drag_item (day_view);
    e_day_view_reshape_main_canvas_resize_bars (day_view);

    e_day_view_check_auto_scroll (day_view, day_view->drag_event_x, day_view->drag_event_y);

    return TRUE;
}

static void
e_day_view_reshape_main_canvas_drag_item (EDayView *day_view)
{
    ECalendarViewPosition pos;
    gint x, y, day, row;

    /* Calculate the day & start row of the event being dragged, using
     * the current mouse position. */
    x = day_view->drag_event_x;
    y = day_view->drag_event_y;
    pos = e_day_view_convert_position_in_main_canvas (
        day_view, x, y,
        &day, &row, NULL);
    /* This shouldn't really happen in a drag. */
    if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
        return;

    if (day_view->drag_event_day != -1
        && day_view->drag_event_day != E_DAY_VIEW_LONG_EVENT)
        row -= day_view->drag_event_offset;
    row = MAX (row, 0);

    e_day_view_update_main_canvas_drag (day_view, row, day);
}

static void
e_day_view_update_main_canvas_drag (EDayView *day_view,
                                    gint row,
                                    gint day)
{
    EDayViewEvent *event = NULL;
    ECalendarView *cal_view;
    gint time_divisions;
    gint cols_in_row, start_col, num_columns, num_rows, start_row, end_row;
    gdouble item_x, item_y, item_w, item_h;
    gchar *text;

    cal_view = E_CALENDAR_VIEW (day_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    /* If the position hasn't changed, just return. */
    if (day_view->drag_last_day == day
        && day_view->drag_last_row == row
        && (day_view->drag_item->flags & GNOME_CANVAS_ITEM_VISIBLE))
        return;

    day_view->drag_last_day = day;
    day_view->drag_last_row = row;

    /* Calculate the event's position. If the event is in the same
     * position we started in, we use the same columns. */
    cols_in_row = 1;
    start_row = 0;
    start_col = 0;
    num_columns = 1;
    num_rows = 1;

    if (day_view->drag_event_day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, day_view->drag_event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    day_view->drag_event_num);
    } else if (day_view->drag_event_day != -1) {
        if (!is_array_index_in_bounds (day_view->events[day_view->drag_event_day], day_view->drag_event_num))
            return;

        event = &g_array_index (day_view->events[day_view->drag_event_day],
                    EDayViewEvent,
                    day_view->drag_event_num);
        start_row = event->start_minute / time_divisions;
        end_row = (event->end_minute - 1) / time_divisions;
        if (end_row < start_row)
            end_row = start_row;

        num_rows = end_row - start_row + 1;
    }

    if (event && day_view->drag_event_day == day && start_row == row) {
        cols_in_row = day_view->cols_per_row[day][row];
        start_col = event->start_row_or_col;
        num_columns = event->num_columns;
    }

    item_x = day_view->day_offsets[day]
        + day_view->day_widths[day] * start_col / cols_in_row;
    item_w = day_view->day_widths[day] * num_columns / cols_in_row
        - E_DAY_VIEW_GAP_WIDTH;
    item_y = row * day_view->row_height;
    item_h = num_rows * day_view->row_height;

    /* Set the positions of the event & associated items. */
    gnome_canvas_item_set (
        day_view->drag_rect_item,
        "x1", item_x + E_DAY_VIEW_BAR_WIDTH - 1,
        "y1", item_y,
        "x2", item_x + item_w - 1,
        "y2", item_y + item_h - 1,
        NULL);

    gnome_canvas_item_set (
        day_view->drag_bar_item,
        "x1", item_x,
        "y1", item_y,
        "x2", item_x + E_DAY_VIEW_BAR_WIDTH - 1,
        "y2", item_y + item_h - 1,
        NULL);

    gnome_canvas_item_set (
        day_view->drag_item,
        "clip_width", item_w - E_DAY_VIEW_BAR_WIDTH - E_DAY_VIEW_EVENT_X_PAD * 2,
        "clip_height", item_h - (E_DAY_VIEW_EVENT_BORDER_HEIGHT + E_DAY_VIEW_EVENT_Y_PAD) * 2,
        NULL);
    e_canvas_item_move_absolute (
        day_view->drag_item,
        item_x + E_DAY_VIEW_BAR_WIDTH + E_DAY_VIEW_EVENT_X_PAD,
        item_y + E_DAY_VIEW_EVENT_BORDER_HEIGHT + E_DAY_VIEW_EVENT_Y_PAD);

    if (!(day_view->drag_bar_item->flags & GNOME_CANVAS_ITEM_VISIBLE)) {
        gnome_canvas_item_raise_to_top (day_view->drag_bar_item);
        gnome_canvas_item_show (day_view->drag_bar_item);
    }

    if (!(day_view->drag_rect_item->flags & GNOME_CANVAS_ITEM_VISIBLE)) {
        gnome_canvas_item_raise_to_top (day_view->drag_rect_item);
        gnome_canvas_item_show (day_view->drag_rect_item);
    }

    /* Set the text, if necessary. We don't want to set the text every
     * time it moves, so we check if it is currently invisible and only
     * set the text then. */
    if (!(day_view->drag_item->flags & GNOME_CANVAS_ITEM_VISIBLE)) {
        const gchar *summary;

        if (event && is_comp_data_valid (event)) {
            summary = icalcomponent_get_summary (event->comp_data->icalcomp);
            text = g_strdup (summary);
        } else {
            text = NULL;
        }

        gnome_canvas_item_set (
            day_view->drag_item,
            "text", text ? text : "",
            NULL);
        gnome_canvas_item_raise_to_top (day_view->drag_item);
        gnome_canvas_item_show (day_view->drag_item);

        g_free (text);
    }
}

static void
e_day_view_on_top_canvas_drag_leave (GtkWidget *widget,
                                     GdkDragContext *context,
                                     guint time,
                                     EDayView *day_view)
{
    day_view->drag_last_day = -1;

    gnome_canvas_item_hide (day_view->drag_long_event_rect_item);
    gnome_canvas_item_hide (day_view->drag_long_event_item);
}

static void
e_day_view_on_main_canvas_drag_leave (GtkWidget *widget,
                                      GdkDragContext *context,
                                      guint time,
                                      EDayView *day_view)
{
    day_view->drag_last_day = -1;

    e_day_view_stop_auto_scroll (day_view);

    gnome_canvas_item_hide (day_view->drag_rect_item);
    gnome_canvas_item_hide (day_view->drag_bar_item);
    gnome_canvas_item_hide (day_view->drag_item);

    /* Hide the resize bars if they are being used in the drag. */
    if (day_view->drag_event_day == day_view->resize_bars_event_day
        && day_view->drag_event_num == day_view->resize_bars_event_num) {
    }
}

static void
e_day_view_on_drag_begin (GtkWidget *widget,
                          GdkDragContext *context,
                          EDayView *day_view)
{
    EDayViewEvent *event;
    gint day, event_num;

    day = day_view->drag_event_day;
    event_num = day_view->drag_event_num;

    /* These should both be set. */
    g_return_if_fail (day != -1);
    g_return_if_fail (event_num != -1);

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day], EDayViewEvent,
                    event_num);
    }

    /* Hide the text item, since it will be shown in the special drag
     * items. */
    gnome_canvas_item_hide (event->canvas_item);
}

static void
e_day_view_on_drag_end (GtkWidget *widget,
                        GdkDragContext *context,
                        EDayView *day_view)
{
    EDayViewEvent *event;
    gint day, event_num;

    day = day_view->drag_event_day;
    event_num = day_view->drag_event_num;

    /* If the calendar has already been updated in drag_data_received()
     * we just return. */
    if (day == -1 || event_num == -1)
        return;

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events, EDayViewEvent,
                    event_num);
        gtk_widget_queue_draw (day_view->top_canvas);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day], EDayViewEvent,
                    event_num);
        gtk_widget_queue_draw (day_view->main_canvas);
    }

    /* Show the text item again. */
    gnome_canvas_item_show (event->canvas_item);

    day_view->drag_event_day = -1;
    day_view->drag_event_num = -1;
}

static void
e_day_view_on_drag_data_get (GtkWidget *widget,
                             GdkDragContext *context,
                             GtkSelectionData *selection_data,
                             guint info,
                             guint time,
                             EDayView *day_view)
{
    EDayViewEvent *event;
    icalcomponent *vcal;
    gint day, event_num;
    gchar *comp_str;

    day = day_view->drag_event_day;
    event_num = day_view->drag_event_num;

    /* These should both be set. */
    g_return_if_fail (day != -1);
    g_return_if_fail (event_num != -1);

    if (day == E_DAY_VIEW_LONG_EVENT) {
        if (!is_array_index_in_bounds (day_view->long_events, event_num))
            return;

        event = &g_array_index (day_view->long_events,
                    EDayViewEvent, event_num);
    } else {
        if (!is_array_index_in_bounds (day_view->events[day], event_num))
            return;

        event = &g_array_index (day_view->events[day],
                    EDayViewEvent, event_num);
    }

    if (!is_comp_data_valid (event))
        return;

    vcal = e_cal_util_new_top_level ();
    e_cal_util_add_timezones_from_component (
        vcal, event->comp_data->icalcomp);
    icalcomponent_add_component (
        vcal, icalcomponent_new_clone (event->comp_data->icalcomp));

    comp_str = icalcomponent_as_ical_string_r (vcal);
    if (comp_str) {
        ESource *source;
        const gchar *source_uid;
        GdkAtom target;
        gchar *tmp;

        source = e_client_get_source (E_CLIENT (event->comp_data->client));
        source_uid = e_source_get_uid (source);

        tmp = g_strconcat (source_uid, "\n", comp_str, NULL);
        target = gtk_selection_data_get_target (selection_data);
        gtk_selection_data_set (
            selection_data, target, 8,
            (guchar *) tmp, strlen (tmp));

        g_free (tmp);
    }

    icalcomponent_free (vcal);
    g_free (comp_str);
}

static void
e_day_view_on_top_canvas_drag_data_received (GtkWidget *widget,
                                             GdkDragContext *context,
                                             gint x,
                                             gint y,
                                             GtkSelectionData *selection_data,
                                             guint info,
                                             guint time,
                                             EDayView *day_view)
{
    EDayViewEvent *event = NULL;
    ECalendarViewPosition pos;
    gint day, start_day, end_day, num_days;
    gint start_offset, end_offset;
    ECalComponent *comp;
    ECalComponentDateTime date;
    ESourceRegistry *registry;
    struct icaltimetype itt;
    time_t dt;
    gboolean all_day_event;
    ECalClient *client;
    ECalModel *model;
    ECalendarView *cal_view;
    gboolean drag_from_same_window;
    const guchar *data;
    gint format, length;

    data = gtk_selection_data_get_data (selection_data);
    format = gtk_selection_data_get_format (selection_data);
    length = gtk_selection_data_get_length (selection_data);

    if (day_view->drag_event_day != -1)
        drag_from_same_window = TRUE;
    else
        drag_from_same_window = FALSE;

    cal_view = E_CALENDAR_VIEW (day_view);
    model = e_calendar_view_get_model (cal_view);

    registry = e_cal_model_get_registry (model);
    client = e_cal_model_get_default_client (model);

    /* Note that we only support DnD within the EDayView at present. */
    if (length >= 0 && format == 8 && day_view->drag_event_day != -1) {
        /* We are dragging in the same window */

        pos = e_day_view_convert_position_in_top_canvas (
            day_view,
            x, y, &day,
            NULL);
        if (pos != E_CALENDAR_VIEW_POS_OUTSIDE) {
            CalObjModType mod = CALOBJ_MOD_ALL;
            GtkWindow *toplevel;

            num_days = 1;
            start_offset = 0;
            end_offset = 0;

            if (day_view->drag_event_day == E_DAY_VIEW_LONG_EVENT) {
                if (!is_array_index_in_bounds (day_view->long_events, day_view->drag_event_num))
                    return;

                event = &g_array_index (day_view->long_events, EDayViewEvent,
                            day_view->drag_event_num);

                if (!is_comp_data_valid (event))
                    return;

                day -= day_view->drag_event_offset;
                day = MAX (day, 0);

                e_day_view_find_long_event_days (
                    event,
                    day_view->days_shown,
                    day_view->day_starts,
                    &start_day,
                    &end_day);
                num_days = end_day - start_day + 1;
                /* Make sure we don't go off the screen. */
                day = MIN (day, day_view->days_shown - num_days);

                start_offset = event->start_minute;
                end_offset = event->end_minute;
            } else {
                if (!is_array_index_in_bounds (day_view->events[day_view->drag_event_day], day_view->drag_event_num))
                    return;

                event = &g_array_index (day_view->events[day_view->drag_event_day],
                            EDayViewEvent,
                            day_view->drag_event_num);

                if (!is_comp_data_valid (event))
                    return;
            }

            client = event->comp_data->client;

            /* We clone the event since we don't want to change
             * the original comp here.
             * Otherwise we would not detect that the event's time
             * had changed in the "update_event" callback. */

            comp = e_cal_component_new ();
            e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

            if (e_cal_component_has_attendees (comp) &&
                !itip_organizer_is_user (registry, comp, client)) {
                g_object_unref (comp);
                return;
            }

            if (start_offset == 0 && end_offset == 0)
                all_day_event = TRUE;
            else
                all_day_event = FALSE;

            date.value = &itt;

            dt = day_view->day_starts[day] + start_offset * 60;
            itt = icaltime_from_timet_with_zone (
                dt, FALSE,
                e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
            if (all_day_event) {
                itt.is_date = TRUE;
                date.tzid = NULL;
            } else {
                /* FIXME: Should probably keep the timezone of
                 * the original start and end times. */
                date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
            }
            cal_comp_set_dtstart_with_oldzone (client, comp, &date);

            if (end_offset == 0)
                dt = day_view->day_starts[day + num_days];
            else
                dt = day_view->day_starts[day + num_days - 1] + end_offset * 60;
            itt = icaltime_from_timet_with_zone (
                dt, FALSE,
                e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
            if (all_day_event) {
                itt.is_date = TRUE;
                date.tzid = NULL;
            } else {
                /* FIXME: Should probably keep the timezone of
                 * the original start and end times. */
                date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
            }
            cal_comp_set_dtend_with_oldzone (client, comp, &date);

            gtk_drag_finish (context, TRUE, TRUE, time);

            /* Reset this since it will be invalid. */
            day_view->drag_event_day = -1;

            /* Show the text item again, just in case it hasn't
             * moved. If we don't do this it may not appear. */
            if (event->canvas_item)
                gnome_canvas_item_show (event->canvas_item);

            e_cal_component_commit_sequence (comp);
            if (e_cal_component_has_recurrences (comp)) {
                if (!recur_component_dialog (client, comp, &mod, NULL, FALSE)) {
                    g_object_unref (comp);
                    return;
                }

                if (mod == CALOBJ_MOD_ALL)
                    comp_util_sanitize_recurrence_master (comp, client);

                if (mod == CALOBJ_MOD_THIS) {
                    e_cal_component_set_rdate_list (comp, NULL);
                    e_cal_component_set_rrule_list (comp, NULL);
                    e_cal_component_set_exdate_list (comp, NULL);
                    e_cal_component_set_exrule_list (comp, NULL);
                }
            } else if (e_cal_component_is_instance (comp))
                mod = CALOBJ_MOD_THIS;

            toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (day_view)));

            e_calendar_view_modify_and_send (
                E_CALENDAR_VIEW (day_view),
                comp, client, mod, toplevel, FALSE);

            g_object_unref (comp);

            return;
        }
    }

    if (length >= 0 && format == 8 && !drag_from_same_window) {
        /* We are dragging between different window */

        icalcomponent *icalcomp;
        icalcomponent_kind kind;
        time_t dtstart;
        icaltimezone *default_zone;

        pos = e_day_view_convert_position_in_top_canvas (
            day_view,
            x, y, &day,
            NULL);
        if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
            goto error;

        icalcomp = icalparser_parse_string ((const gchar *) data);
        if (!icalcomp)
            goto error;

        default_zone = e_cal_model_get_timezone (model);

        /* check the type of the component */
        kind = icalcomponent_isa (icalcomp);
        if (kind != ICAL_VCALENDAR_COMPONENT && kind != ICAL_VEVENT_COMPONENT)
            goto error;

        dtstart = day_view->day_starts[day];

        if (kind == ICAL_VCALENDAR_COMPONENT) {
            icalcomponent_kind child_kind;
            icalcomponent *subcomp;

            subcomp = icalcomponent_get_first_component (icalcomp, ICAL_ANY_COMPONENT);
            while (subcomp) {
                child_kind = icalcomponent_isa (subcomp);
                if (child_kind == ICAL_VEVENT_COMPONENT)
                    e_calendar_view_add_event (
                        E_CALENDAR_VIEW (day_view), client, dtstart,
                        default_zone, subcomp, TRUE);
                else if (child_kind == ICAL_VTIMEZONE_COMPONENT) {
                    icaltimezone *zone;

                    zone = icaltimezone_new ();
                    icaltimezone_set_component (zone, subcomp);
                    e_cal_client_add_timezone_sync (client, zone, NULL, NULL);

                    icaltimezone_free (zone, 1);
                }

                subcomp = icalcomponent_get_next_component (
                    icalcomp, ICAL_ANY_COMPONENT);
            }

            icalcomponent_free (icalcomp);

        } else {
            e_calendar_view_add_event (E_CALENDAR_VIEW (day_view), client, dtstart, default_zone, icalcomp, TRUE);
        }

        gtk_drag_finish (context, TRUE, TRUE, time);
        return;
    }

error:
    gtk_drag_finish (context, FALSE, FALSE, time);
}

static void
e_day_view_on_main_canvas_drag_data_received (GtkWidget *widget,
                                              GdkDragContext *context,
                                              gint x,
                                              gint y,
                                              GtkSelectionData *selection_data,
                                              guint info,
                                              guint time,
                                              EDayView *day_view)
{
    ECalendarView *cal_view;
    EDayViewEvent *event = NULL;
    ECalendarViewPosition pos;
    gint time_divisions;
    gint day, row, start_row, end_row, num_rows, scroll_x, scroll_y;
    gint start_offset, end_offset;
    ECalModel *model;
    ECalComponent *comp;
    ECalComponentDateTime date;
    ESourceRegistry *registry;
    struct icaltimetype itt;
    time_t dt;
    ECalClient *client;
    gboolean drag_from_same_window;
    const guchar *data;
    gint format, length;

    cal_view = E_CALENDAR_VIEW (day_view);
    model = e_calendar_view_get_model (cal_view);
    time_divisions = e_calendar_view_get_time_divisions (cal_view);

    registry = e_cal_model_get_registry (model);

    data = gtk_selection_data_get_data (selection_data);
    format = gtk_selection_data_get_format (selection_data);
    length = gtk_selection_data_get_length (selection_data);

    if (day_view->drag_event_day != -1)
        drag_from_same_window = TRUE;
    else
        drag_from_same_window = FALSE;

    client = e_cal_model_get_default_client (e_calendar_view_get_model (E_CALENDAR_VIEW (day_view)));

    gnome_canvas_get_scroll_offsets (
        GNOME_CANVAS (widget),
        &scroll_x, &scroll_y);
    x += scroll_x;
    y += scroll_y;

    /* Note that we only support DnD within the EDayView at present. */
    if (length >= 0 && format == 8 && (day_view->drag_event_day != -1)) {
        /* We are dragging in the same window */

        pos = e_day_view_convert_position_in_main_canvas (
            day_view,
            x, y, &day,
            &row, NULL);
        if (pos != E_CALENDAR_VIEW_POS_OUTSIDE) {
            CalObjModType mod = CALOBJ_MOD_ALL;
            GtkWindow *toplevel;

            num_rows = 1;
            start_offset = 0;
            end_offset = 0;

            if (day_view->drag_event_day == E_DAY_VIEW_LONG_EVENT) {
                if (!is_array_index_in_bounds (day_view->long_events, day_view->drag_event_num))
                    return;

                event = &g_array_index (day_view->long_events, EDayViewEvent,
                            day_view->drag_event_num);

                if (!is_comp_data_valid (event))
                    return;
            } else {
                if (!is_array_index_in_bounds (day_view->events[day_view->drag_event_day], day_view->drag_event_num))
                    return;

                event = &g_array_index (day_view->events[day_view->drag_event_day],
                            EDayViewEvent,
                            day_view->drag_event_num);

                if (!is_comp_data_valid (event))
                    return;

                row -= day_view->drag_event_offset;

                /* Calculate time offset from start row. */
                start_row = event->start_minute / time_divisions;
                end_row = (event->end_minute - 1) / time_divisions;
                if (end_row < start_row)
                    end_row = start_row;

                num_rows = end_row - start_row + 1;

                start_offset = event->start_minute % time_divisions;
                end_offset = event->end_minute % time_divisions;
                if (end_offset != 0)
                    end_offset = time_divisions - end_offset;
            }

            client = event->comp_data->client;

            /* We use a temporary shallow copy of comp since we
             * don't want to change the original comp here.
             * Otherwise we would not detect that the event's time
             * had changed in the "update_event" callback. */
            comp = e_cal_component_new ();
            e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (event->comp_data->icalcomp));

            if (e_cal_component_has_attendees (comp) &&
                !itip_organizer_is_user (registry, comp, client)) {
                g_object_unref (comp);
                return;
            }

            date.value = &itt;
            date.tzid = icaltimezone_get_tzid (e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));

            dt = e_day_view_convert_grid_position_to_time (day_view, day, row) + start_offset * 60;
            *date.value = icaltime_from_timet_with_zone (dt, FALSE,
                                     e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
            cal_comp_set_dtstart_with_oldzone (client, comp, &date);
            dt = e_day_view_convert_grid_position_to_time (day_view, day, row + num_rows) - end_offset * 60;
            *date.value = icaltime_from_timet_with_zone (dt, FALSE,
                                     e_calendar_view_get_timezone (E_CALENDAR_VIEW (day_view)));
            cal_comp_set_dtend_with_oldzone (client, comp, &date);
            e_cal_component_abort_sequence (comp);

            gtk_drag_finish (context, TRUE, TRUE, time);

            /* Reset this since it will be invalid. */
            day_view->drag_event_day = -1;

            /* Show the text item again, just in case it hasn't
             * moved. If we don't do this it may not appear. */
            if (event->canvas_item)
                gnome_canvas_item_show (event->canvas_item);

            e_cal_component_commit_sequence (comp);
            if (e_cal_component_has_recurrences (comp)) {
                if (!recur_component_dialog (client, comp, &mod, NULL, FALSE)) {
                    g_object_unref (comp);
                    return;
                }

                if (mod == CALOBJ_MOD_ALL)
                    comp_util_sanitize_recurrence_master (comp, client);

                if (mod == CALOBJ_MOD_THIS) {
                    e_cal_component_set_rdate_list (comp, NULL);
                    e_cal_component_set_rrule_list (comp, NULL);
                    e_cal_component_set_exdate_list (comp, NULL);
                    e_cal_component_set_exrule_list (comp, NULL);
                }
            } else if (e_cal_component_is_instance (comp))
                mod = CALOBJ_MOD_THIS;

            toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (day_view)));

            e_calendar_view_modify_and_send (
                E_CALENDAR_VIEW (day_view),
                comp, client, mod, toplevel, FALSE);

            g_object_unref (comp);

            return;
        }
    }

    if (length >= 0 && format == 8 && !drag_from_same_window) {
        /* We are dragging between different window */

        icalcomponent *icalcomp;
        icalcomponent_kind kind;
        time_t dtstart;
        icaltimezone *default_zone;

        pos = e_day_view_convert_position_in_main_canvas (
            day_view,
            x, y, &day,
            &row, NULL);
        if (pos == E_CALENDAR_VIEW_POS_OUTSIDE)
            goto error;

        icalcomp = icalparser_parse_string ((const gchar *) data);
        if (!icalcomp)
            goto error;

        default_zone = e_cal_model_get_timezone (model);

        /* check the type of the component */
        kind = icalcomponent_isa (icalcomp);
        if (kind != ICAL_VCALENDAR_COMPONENT && kind != ICAL_VEVENT_COMPONENT)
            goto error;

        dtstart = e_day_view_convert_grid_position_to_time (day_view, day, row);

        if (kind == ICAL_VCALENDAR_COMPONENT) {
            icalcomponent_kind child_kind;
            icalcomponent *subcomp;

            subcomp = icalcomponent_get_first_component (icalcomp, ICAL_ANY_COMPONENT);
            while (subcomp) {
                child_kind = icalcomponent_isa (subcomp);
                if (child_kind == ICAL_VEVENT_COMPONENT)
                    e_calendar_view_add_event (
                        E_CALENDAR_VIEW (day_view), client, dtstart,
                        default_zone, subcomp, FALSE);
                else if (child_kind == ICAL_VTIMEZONE_COMPONENT) {
                    icaltimezone *zone;

                    zone = icaltimezone_new ();
                    icaltimezone_set_component (zone, subcomp);
                    e_cal_client_add_timezone_sync (client, zone, NULL, NULL);

                    icaltimezone_free (zone, 1);
                }

                subcomp = icalcomponent_get_next_component (
                    icalcomp, ICAL_ANY_COMPONENT);
            }

            icalcomponent_free (icalcomp);

        } else {
            e_calendar_view_add_event (E_CALENDAR_VIEW (day_view), client, dtstart, default_zone, icalcomp, FALSE);
        }

        gtk_drag_finish (context, TRUE, TRUE, time);
        return;
    }

error:
    gtk_drag_finish (context, FALSE, FALSE, time);
}

/* Converts an hour from 0-23 to the preferred time format, and returns the
 * suffix to add and the width of it in the normal font. */
void
e_day_view_convert_time_to_display (EDayView *day_view,
                                    gint hour,
                                    gint *display_hour,
                                    const gchar **suffix,
                                    gint *suffix_width)
{
    ECalModel *model;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));

    /* Calculate the actual hour number to display. For 12-hour
     * format we convert 0-23 to 12-11am/12-11pm. */
    *display_hour = hour;
    if (e_cal_model_get_use_24_hour_format (model)) {
        *suffix = "";
        *suffix_width = 0;
    } else {
        if (hour < 12) {
            *suffix = day_view->am_string;
            *suffix_width = day_view->am_string_width;
        } else {
            *display_hour -= 12;
            *suffix = day_view->pm_string;
            *suffix_width = day_view->pm_string_width;
        }

        /* 12-hour uses 12:00 rather than 0:00. */
        if (*display_hour == 0)
            *display_hour = 12;
    }
}

gint
e_day_view_get_time_string_width (EDayView *day_view)
{
    ECalModel *model;
    gint time_width;

    model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
    time_width = day_view->digit_width * 4 + day_view->colon_width;

    if (!e_cal_model_get_use_24_hour_format (model))
        time_width += MAX (day_view->am_string_width,
                   day_view->pm_string_width);

    return time_width;
}

/* Queues a layout, unless one is already queued. */
static void
e_day_view_queue_layout (EDayView *day_view)
{
    if (day_view->layout_timeout_id == 0) {
        day_view->layout_timeout_id = g_timeout_add (E_DAY_VIEW_LAYOUT_TIMEOUT, e_day_view_layout_timeout_cb, day_view);
    }
}

/* Removes any queued layout. */
static void
e_day_view_cancel_layout (EDayView *day_view)
{
    if (day_view->layout_timeout_id != 0) {
        g_source_remove (day_view->layout_timeout_id);
        day_view->layout_timeout_id = 0;
    }
}

static gboolean
e_day_view_layout_timeout_cb (gpointer data)
{
    EDayView *day_view = E_DAY_VIEW (data);

    gtk_widget_queue_draw (day_view->top_canvas);
    gtk_widget_queue_draw (day_view->top_dates_canvas);
    gtk_widget_queue_draw (day_view->main_canvas);
    e_day_view_check_layout (day_view);

    day_view->layout_timeout_id = 0;
    return FALSE;
}

/* Returns the number of selected events (0 or 1 at present). */
gint
e_day_view_get_num_events_selected (EDayView *day_view)
{
    g_return_val_if_fail (E_IS_DAY_VIEW (day_view), 0);

    return (day_view->editing_event_day != -1) ? 1 : 0;
}