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path: root/calendar/gui/e-calendar-table.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * Authors :
 *  Damon Chaplin <damon@ximian.com>
 *  Rodrigo Moya <rodrigo@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 * USA
 */

/*
 * ECalendarTable - displays the ECalComponent objects in a table (an ETable).
 * Used for calendar events and tasks.
 */

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

#include <sys/stat.h>
#include <unistd.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include <gnome.h>
#include <gtk/gtktooltip.h>
#include <misc/e-gui-utils.h>
#include <table/e-cell-checkbox.h>
#include <table/e-cell-toggle.h>
#include <table/e-cell-text.h>
#include <table/e-cell-combo.h>
#include <e-util/e-dialog-utils.h>
#include <e-util/e-util-private.h>
#include <misc/e-cell-date-edit.h>
#include <misc/e-cell-percent.h>
#include <libecal/e-cal-time-util.h>
#include <libedataserver/e-time-utils.h>

#include "calendar-component.h"
#include "calendar-config.h"
#include "dialogs/delete-comp.h"
#include "dialogs/delete-error.h"
#include "dialogs/task-editor.h"
#include "e-cal-model-tasks.h"
#include "e-calendar-table.h"
#include "e-calendar-view.h"
#include "e-cell-date-edit-text.h"
#include "e-comp-editor-registry.h"
#include "print.h"
#include <e-util/e-icon-factory.h>
#include "e-cal-popup.h"
#include "e-tasks.h"
#include "misc.h"

enum TargetType{
    TARGET_TYPE_VCALENDAR
};

static GtkTargetEntry target_types[] = {
    { "text/x-calendar", 0, TARGET_TYPE_VCALENDAR },
    { "text/calendar",   0, TARGET_TYPE_VCALENDAR }
};

static guint n_target_types = G_N_ELEMENTS (target_types);

extern ECompEditorRegistry *comp_editor_registry;

static void e_calendar_table_class_init     (ECalendarTableClass *class);
static void e_calendar_table_init       (ECalendarTable *cal_table);
static void e_calendar_table_destroy        (GtkObject  *object);

static void e_calendar_table_on_double_click    (ETable     *table,
                         gint        row,
                         gint        col,
                         GdkEvent   *event,
                         ECalendarTable *cal_table);
static gint e_calendar_table_show_popup_menu    (ETable *table,
                         GdkEvent *gdk_event,
                         ECalendarTable *cal_table);

static gint e_calendar_table_on_right_click (ETable     *table,
                         gint        row,
                         gint        col,
                         GdkEvent       *event,
                         ECalendarTable *cal_table);
static gboolean e_calendar_table_on_popup_menu  (GtkWidget *widget,
                         gpointer data);

static gint e_calendar_table_on_key_press   (ETable     *table,
                         gint        row,
                         gint        col,
                         GdkEventKey    *event,
                         ECalendarTable *cal_table);

static struct tm e_calendar_table_get_current_time (ECellDateEdit *ecde,
                            gpointer data);
static void mark_as_complete_cb (EPopup *ep, EPopupItem *pitem, void *data);

static void hide_completed_rows (ECalModel *model, GList *clients_list, char *hide_sexp, GPtrArray *comp_objects);
static void show_completed_rows (ECalModel *model, GList *clients_list, char *show_sexp, GPtrArray *comp_objects);

/* Signal IDs */
enum {
    USER_CREATED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

/* The icons to represent the task. */
#define E_CALENDAR_MODEL_NUM_ICONS  4
static const char* icon_names[E_CALENDAR_MODEL_NUM_ICONS] = {
    "stock_task", "stock_task-recurring", "stock_task-assigned", "stock_task-assigned-to"
};
static GdkPixbuf* icon_pixbufs[E_CALENDAR_MODEL_NUM_ICONS] = { NULL };

static GdkAtom clipboard_atom = GDK_NONE;

G_DEFINE_TYPE (ECalendarTable, e_calendar_table, GTK_TYPE_TABLE)

static void
e_calendar_table_class_init (ECalendarTableClass *class)
{
    GtkObjectClass *object_class;

    object_class = (GtkObjectClass *) class;

    /* Method override */
    object_class->destroy       = e_calendar_table_destroy;

    signals[USER_CREATED] =
        g_signal_new ("user_created",
                  G_TYPE_FROM_CLASS (class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ECalendarTableClass, user_created),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);

    /* clipboard atom */
    if (!clipboard_atom)
        clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE);
}

static gint
date_compare_cb (gconstpointer a, gconstpointer b)
{
    ECellDateEditValue *dv1 = (ECellDateEditValue *) a;
    ECellDateEditValue *dv2 = (ECellDateEditValue *) b;
    struct icaltimetype tt;

    /* First check if either is NULL. NULL dates sort last. */
    if (!dv1 || !dv2) {
        if (dv1 == dv2)
            return 0;
        else if (dv1)
            return -1;
        else
            return 1;
    }

    /* Copy the 2nd value and convert it to the same timezone as the
       first. */
    tt = dv2->tt;

    icaltimezone_convert_time (&tt, dv2->zone, dv1->zone);

    /* Now we can compare them. */

    return icaltime_compare (dv1->tt, tt);
}

static gint
percent_compare_cb (gconstpointer a, gconstpointer b)
{
    int percent1 = GPOINTER_TO_INT (a);
    int percent2 = GPOINTER_TO_INT (b);
    int retval;

    if (percent1 > percent2)
        retval = 1;
    else if (percent1 < percent2)
        retval = -1;
    else
        retval = 0;

    return retval;
}

static gint
priority_compare_cb (gconstpointer a, gconstpointer b)
{
    int priority1, priority2;

    priority1 = e_cal_util_priority_from_string ((const char*) a);
    priority2 = e_cal_util_priority_from_string ((const char*) b);

    /* We change undefined priorities so they appear after 'Low'. */
    if (priority1 <= 0)
        priority1 = 10;
    if (priority2 <= 0)
        priority2 = 10;

    /* We'll just use the ordering of the priority values. */
    if (priority1 < priority2)
        return -1;
    else if (priority1 > priority2)
        return 1;
    else
        return 0;
}

static gint
status_from_string (const char *str)
{
    int status = -2;

    if (!str || !str[0])
        status = -1;
    else if (!g_utf8_collate (str, _("Not Started")))
        status = 0;
    else if (!g_utf8_collate (str, _("In Progress")))
        status = 1;
    else if (!g_utf8_collate (str, _("Completed")))
        status = 2;
    else if (!g_utf8_collate (str, _("Canceled")))
        status = 3;

    return status;
}

static gint
status_compare_cb (gconstpointer a, gconstpointer b)
{
    int sa = status_from_string ((const char *)a);
    int sb = status_from_string ((const char *)b);

    if (sa < sb)
        return -1;
    else if (sa > sb)
        return 1;

    return 0;
}

static void
row_appended_cb (ECalModel *model, ECalendarTable *cal_table)
{
    g_signal_emit (cal_table, signals[USER_CREATED], 0);
}

static void
get_time_as_text (struct icaltimetype *tt, icaltimezone *f_zone, icaltimezone *t_zone, char *buff, int buff_len)
{
        struct tm tmp_tm;

    buff [0] = 0;

    tmp_tm = icaltimetype_to_tm_with_zone (tt, f_zone, t_zone);
        e_time_format_date_and_time (&tmp_tm,
                                     calendar_config_get_24_hour_format (),
                                     FALSE, FALSE,
                                     buff, buff_len);
}

static gboolean
query_tooltip_cb (GtkWidget *widget, gint x, gint y, gboolean keyboard_mode, GtkTooltip *tooltip, gpointer user_data)
{
    ECalendarTable *cal_table;
    ECalModelComponent *comp;
    int row = -1, col = -1;
    GtkWidget *box, *l, *w;
    GtkStyle *style = gtk_widget_get_default_style ();
    char *tmp;
    const char *str;
    GString *tmp2;
    char buff[1001];
    gboolean free_text = FALSE;
    ECalComponent *new_comp;
    ECalComponentOrganizer organizer;
    ECalComponentDateTime dtstart, dtdue;
    icaltimezone *zone, *default_zone;
    GSList *desc, *p;
    int len;
    ETable *etable;
    ESelectionModel *esm;

    if (keyboard_mode)
        return FALSE;

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (E_IS_CALENDAR_TABLE (user_data), FALSE);
    g_return_val_if_fail (tooltip != NULL, FALSE);

    cal_table = E_CALENDAR_TABLE (user_data);

    etable = e_calendar_table_get_table (cal_table);
    e_table_get_mouse_over_cell (etable, x, y, &row, &col);
    if (row == -1 || !etable)
        return FALSE;

    /* respect sorting option, the 'e_table_get_mouse_over_cell' returns sorted row, not the model one */
    esm = e_table_get_selection_model (etable);
    if (esm && esm->sorter && e_sorter_needs_sorting (esm->sorter))
        row = e_sorter_sorted_to_model (esm->sorter, row);

    comp = e_cal_model_get_component_at (cal_table->model, row);
    if (!comp || !comp->icalcomp)
        return FALSE;

    new_comp = e_cal_component_new ();
    if (!e_cal_component_set_icalcomponent (new_comp, icalcomponent_new_clone (comp->icalcomp))) {
        g_object_unref (new_comp);
        return FALSE;
    }

    box = gtk_vbox_new (FALSE, 0);

    str = e_calendar_view_get_icalcomponent_summary (comp->client, comp->icalcomp, &free_text);
    if (!(str && *str)) {
        if (free_text)
            g_free ((char *)str);
        free_text = FALSE;
        str = _("* No Summary *");
    }

    l = gtk_label_new (NULL);
    tmp = g_markup_printf_escaped ("<b>%s</b>", str);
    gtk_label_set_line_wrap (GTK_LABEL (l), TRUE);
    gtk_label_set_markup (GTK_LABEL (l), tmp);
    gtk_misc_set_alignment (GTK_MISC (l), 0.0, 0.5);
    w = gtk_event_box_new ();

    gtk_widget_modify_bg (w, GTK_STATE_NORMAL, &(style->bg[GTK_STATE_SELECTED]));
    gtk_widget_modify_fg (l, GTK_STATE_NORMAL, &(style->text[GTK_STATE_SELECTED]));
    gtk_container_add (GTK_CONTAINER (w), l);
    gtk_box_pack_start (GTK_BOX (box), w, TRUE, TRUE, 0);
    g_free (tmp);

    if (free_text)
        g_free ((char *)str);
    free_text = FALSE;

    w = gtk_event_box_new ();
    gtk_widget_modify_bg (w, GTK_STATE_NORMAL, &(style->bg[GTK_STATE_NORMAL]));

    l = gtk_vbox_new (FALSE, 0);
    gtk_container_add (GTK_CONTAINER (w), l);
    gtk_box_pack_start (GTK_BOX (box), w, FALSE, FALSE, 0);
    w = l;

    e_cal_component_get_organizer (new_comp, &organizer);
    if (organizer.cn) {
        char *ptr ;
        ptr = strchr( organizer.value, ':');

        if (ptr) {
            ptr++;
            /* To Translators: It will display "Organiser: NameOfTheUser <email@ofuser.com>" */
            tmp = g_strdup_printf (_("Organizer: %s <%s>"), organizer.cn, ptr);
        } else {
            /* With SunOne accounts, there may be no ':' in organiser.value */
            tmp = g_strdup_printf (_("Organizer: %s"), organizer.cn);
        }

        l = gtk_label_new (tmp);
        gtk_label_set_line_wrap (GTK_LABEL (l), FALSE);
        gtk_misc_set_alignment (GTK_MISC (l), 0.0, 0.5);
        gtk_box_pack_start (GTK_BOX (w), l, FALSE, FALSE, 0);
        g_free (tmp);
    }

    e_cal_component_get_dtstart (new_comp, &dtstart);
    e_cal_component_get_due (new_comp, &dtdue);

    default_zone = e_cal_model_get_timezone  (cal_table->model);

    if (dtstart.tzid) {
        zone = icalcomponent_get_timezone (e_cal_component_get_icalcomponent (new_comp), dtstart.tzid);
        if (!zone)
            e_cal_get_timezone (comp->client, dtstart.tzid, &zone, NULL);
        if (!zone)
            zone = default_zone;
    } else {
        zone = NULL;
    }

    tmp2 = g_string_new ("");

    if (dtstart.value) {
        get_time_as_text (dtstart.value, zone, default_zone, buff, 1000);

        if (buff [0]) {
            g_string_append (tmp2, _("Start: "));
            g_string_append (tmp2, buff);
        }
    }

    if (dtdue.value) {
        get_time_as_text (dtdue.value, zone, default_zone, buff, 1000);

        if (buff [0]) {
            if (tmp2->len)
                g_string_append (tmp2, "; ");

            g_string_append (tmp2, _("Due: "));
            g_string_append (tmp2, buff);
        }
    }

    if (tmp2->len) {
        l = gtk_label_new (tmp2->str);
        gtk_misc_set_alignment (GTK_MISC (l), 0.0, 0.5);
        gtk_box_pack_start (GTK_BOX (w), l, FALSE, FALSE, 0);
    }

    g_string_free (tmp2, TRUE);

    e_cal_component_free_datetime (&dtstart);
    e_cal_component_free_datetime (&dtdue);

    tmp2 = g_string_new ("");
    e_cal_component_get_description_list (new_comp, &desc);
    for (len = 0, p = desc; p != NULL; p = p->next) {
        ECalComponentText *text = p->data;

        if (text->value != NULL) {
            len += strlen (text->value);
            g_string_append (tmp2, text->value);
            if (len > 1024) {
                g_string_set_size (tmp2, 1020);
                g_string_append (tmp2, "...");
                break;
            }
        }
    }
    e_cal_component_free_text_list (desc);

    if (tmp2->len) {
        l = gtk_label_new (tmp2->str);
        gtk_misc_set_alignment (GTK_MISC (l), 0.0, 0.5);
        gtk_box_pack_start (GTK_BOX (box), l, FALSE, FALSE, 0);
    }

    g_string_free (tmp2, TRUE);

    gtk_widget_show_all (box);
    gtk_tooltip_set_custom (tooltip, box);

    g_object_unref (new_comp);

    return TRUE;
}

static void
e_calendar_table_init (ECalendarTable *cal_table)
{
    GtkWidget *table;
    ETable *e_table;
    ECell *cell, *popup_cell;
    ETableExtras *extras;
    gint i;
    GdkPixbuf *pixbuf;
    GList *strings;
    AtkObject *a11y;
    char *etspecfile;

    /* Create the model */

    cal_table->model = (ECalModel *) e_cal_model_tasks_new ();
    g_signal_connect (cal_table->model, "row_appended", G_CALLBACK (row_appended_cb), cal_table);

    cal_table->user_created_cal = NULL;

    /* Create the header columns */

    extras = e_table_extras_new();

    /*
     * Normal string fields.
     */
    cell = e_cell_text_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              NULL);

    e_table_extras_add_cell (extras, "calstring", cell);


    /*
     * Date fields.
     */
    cell = e_cell_date_edit_text_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              NULL);

    popup_cell = e_cell_date_edit_new ();
    e_cell_popup_set_child (E_CELL_POPUP (popup_cell), cell);
    g_object_unref (cell);
    e_table_extras_add_cell (extras, "dateedit", popup_cell);
    cal_table->dates_cell = E_CELL_DATE_EDIT (popup_cell);

    e_cell_date_edit_set_get_time_callback (E_CELL_DATE_EDIT (popup_cell),
                        e_calendar_table_get_current_time,
                        cal_table, NULL);


    /*
     * Combo fields.
     */

    /* Classification field. */
    cell = e_cell_text_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              "editable", FALSE,
              NULL);

    popup_cell = e_cell_combo_new ();
    e_cell_popup_set_child (E_CELL_POPUP (popup_cell), cell);
    g_object_unref (cell);

    strings = NULL;
    strings = g_list_append (strings, (char*) _("Public"));
    strings = g_list_append (strings, (char*) _("Private"));
    strings = g_list_append (strings, (char*) _("Confidential"));
    e_cell_combo_set_popdown_strings (E_CELL_COMBO (popup_cell),
                      strings);

    e_table_extras_add_cell (extras, "classification", popup_cell);

    /* Priority field. */
    cell = e_cell_text_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              "editable", FALSE,
              NULL);

    popup_cell = e_cell_combo_new ();
    e_cell_popup_set_child (E_CELL_POPUP (popup_cell), cell);
    g_object_unref (cell);

    strings = NULL;
    strings = g_list_append (strings, (char*) _("High"));
    strings = g_list_append (strings, (char*) _("Normal"));
    strings = g_list_append (strings, (char*) _("Low"));
    strings = g_list_append (strings, (char*) _("Undefined"));
    e_cell_combo_set_popdown_strings (E_CELL_COMBO (popup_cell),
                      strings);

    e_table_extras_add_cell (extras, "priority", popup_cell);

    /* Percent field. */
    cell = e_cell_percent_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              NULL);

    popup_cell = e_cell_combo_new ();
    e_cell_popup_set_child (E_CELL_POPUP (popup_cell), cell);
    g_object_unref (cell);

    strings = NULL;
    strings = g_list_append (strings, (char*) _("0%"));
    strings = g_list_append (strings, (char*) _("10%"));
    strings = g_list_append (strings, (char*) _("20%"));
    strings = g_list_append (strings, (char*) _("30%"));
    strings = g_list_append (strings, (char*) _("40%"));
    strings = g_list_append (strings, (char*) _("50%"));
    strings = g_list_append (strings, (char*) _("60%"));
    strings = g_list_append (strings, (char*) _("70%"));
    strings = g_list_append (strings, (char*) _("80%"));
    strings = g_list_append (strings, (char*) _("90%"));
    strings = g_list_append (strings, (char*) _("100%"));
    e_cell_combo_set_popdown_strings (E_CELL_COMBO (popup_cell),
                      strings);

    e_table_extras_add_cell (extras, "percent", popup_cell);

    /* Transparency field. */
    cell = e_cell_text_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              "editable", FALSE,
              NULL);

    popup_cell = e_cell_combo_new ();
    e_cell_popup_set_child (E_CELL_POPUP (popup_cell), cell);
    g_object_unref (cell);

    strings = NULL;
    strings = g_list_append (strings, (char*) _("Free"));
    strings = g_list_append (strings, (char*) _("Busy"));
    e_cell_combo_set_popdown_strings (E_CELL_COMBO (popup_cell),
                      strings);

    e_table_extras_add_cell (extras, "transparency", popup_cell);

    /* Status field. */
    cell = e_cell_text_new (NULL, GTK_JUSTIFY_LEFT);
    g_object_set (G_OBJECT (cell),
              "strikeout_column", E_CAL_MODEL_TASKS_FIELD_STRIKEOUT,
              "bold_column", E_CAL_MODEL_TASKS_FIELD_OVERDUE,
              "bg_color_column", E_CAL_MODEL_FIELD_COLOR,
              "editable", FALSE,
              NULL);

    popup_cell = e_cell_combo_new ();
    e_cell_popup_set_child (E_CELL_POPUP (popup_cell), cell);
    g_object_unref (cell);

    strings = NULL;
    strings = g_list_append (strings, (char*) _("Not Started"));
    strings = g_list_append (strings, (char*) _("In Progress"));
    strings = g_list_append (strings, (char*) _("Completed"));
    strings = g_list_append (strings, (char*) _("Canceled"));
    e_cell_combo_set_popdown_strings (E_CELL_COMBO (popup_cell),
                      strings);

    e_table_extras_add_cell (extras, "calstatus", popup_cell);

    e_table_extras_add_compare (extras, "date-compare",
                    date_compare_cb);
    e_table_extras_add_compare (extras, "percent-compare",
                    percent_compare_cb);
    e_table_extras_add_compare (extras, "priority-compare",
                    priority_compare_cb);
    e_table_extras_add_compare (extras, "status-compare",
                    status_compare_cb);

    /* Create pixmaps */

    if (!icon_pixbufs[0])
        for (i = 0; i < E_CALENDAR_MODEL_NUM_ICONS; i++) {
            icon_pixbufs[i] = e_icon_factory_get_icon (icon_names[i], E_ICON_SIZE_LIST);
        }

    cell = e_cell_toggle_new (0, E_CALENDAR_MODEL_NUM_ICONS, icon_pixbufs);
    e_table_extras_add_cell(extras, "icon", cell);
    e_table_extras_add_pixbuf(extras, "icon", icon_pixbufs[0]);

    pixbuf = e_icon_factory_get_icon ("stock_check-filled", E_ICON_SIZE_LIST);
    e_table_extras_add_pixbuf(extras, "complete", pixbuf);
    g_object_unref(pixbuf);

    /* Create the table */

    etspecfile = g_build_filename (EVOLUTION_ETSPECDIR,
                       "e-calendar-table.etspec",
                       NULL);
    table = e_table_scrolled_new_from_spec_file (E_TABLE_MODEL (cal_table->model),
                             extras,
                             etspecfile,
                             NULL);
    g_free (etspecfile);

    /* FIXME: this causes a message from GLib about 'extras' having only a floating
       reference */
    /* g_object_unref (extras); */

    cal_table->etable = table;
    gtk_table_attach (GTK_TABLE (cal_table), table, 0, 1, 0, 1,
              GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
    gtk_widget_show (table);


    e_table = e_table_scrolled_get_table (E_TABLE_SCROLLED (table));
    g_signal_connect (e_table, "double_click", G_CALLBACK (e_calendar_table_on_double_click), cal_table);
    g_signal_connect (e_table, "right_click", G_CALLBACK (e_calendar_table_on_right_click), cal_table);
    g_signal_connect (e_table, "key_press", G_CALLBACK (e_calendar_table_on_key_press), cal_table);
    g_signal_connect (e_table, "popup_menu", G_CALLBACK (e_calendar_table_on_popup_menu), cal_table);
    g_signal_connect (e_table, "query-tooltip", G_CALLBACK (query_tooltip_cb), cal_table);
    gtk_widget_set_has_tooltip (GTK_WIDGET (e_table), TRUE);

    a11y = gtk_widget_get_accessible ((GtkWidget *)e_table);
    if (a11y)
        atk_object_set_name (a11y, _("Tasks"));
}


/**
 * e_calendar_table_new:
 * @Returns: a new #ECalendarTable.
 *
 * Creates a new #ECalendarTable.
 **/
GtkWidget *
e_calendar_table_new (void)
{
    GtkWidget *cal_table;

    cal_table = GTK_WIDGET (g_object_new (e_calendar_table_get_type (), NULL));

    return cal_table;
}


/**
 * e_calendar_table_get_model:
 * @cal_table: A calendar table.
 *
 * Queries the calendar data model that a calendar table is using.
 *
 * Return value: A calendar model.
 **/
ECalModel *
e_calendar_table_get_model (ECalendarTable *cal_table)
{
    g_return_val_if_fail (cal_table != NULL, NULL);
    g_return_val_if_fail (E_IS_CALENDAR_TABLE (cal_table), NULL);

    return cal_table->model;
}


static void
e_calendar_table_destroy (GtkObject *object)
{
    ECalendarTable *cal_table;

    cal_table = E_CALENDAR_TABLE (object);

    if (cal_table->model) {
        g_object_unref (cal_table->model);
        cal_table->model = NULL;
    }

    GTK_OBJECT_CLASS (e_calendar_table_parent_class)->destroy (object);
}

/**
 * e_calendar_table_get_table:
 * @cal_table: A calendar table.
 *
 * Queries the #ETable widget that the calendar table is using.
 *
 * Return value: The #ETable widget that the calendar table uses to display its
 * data.
 **/
ETable *
e_calendar_table_get_table (ECalendarTable *cal_table)
{
    g_return_val_if_fail (cal_table != NULL, NULL);
    g_return_val_if_fail (E_IS_CALENDAR_TABLE (cal_table), NULL);

    return e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));
}

void
e_calendar_table_open_selected (ECalendarTable *cal_table)
{
    ECalModelComponent *comp_data;
    icalproperty *prop;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_ATTENDEE_PROPERTY);
    if (comp_data != NULL)
        e_calendar_table_open_task (cal_table, comp_data->client, comp_data->icalcomp, prop ? TRUE : FALSE);
}

/**
 * e_calendar_table_complete_selected:
 * @cal_table: A calendar table
 *
 * Marks the selected items as completed
 **/
void
e_calendar_table_complete_selected (ECalendarTable *cal_table)
{
    g_return_if_fail (cal_table != NULL);
    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    mark_as_complete_cb (NULL, NULL, cal_table);
}

/* Used from e_table_selected_row_foreach(); puts the selected row number in an
 * int pointed to by the closure data.
 */
static void
get_selected_row_cb (int model_row, gpointer data)
{
    int *row;

    row = data;
    *row = model_row;
}

/* Returns the component that is selected in the table; only works if there is
 * one and only one selected row.
 */
ECalModelComponent *
e_calendar_table_get_selected_comp (ECalendarTable *cal_table)
{
    ETable *etable;
    int row;

    etable = e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));
    if (e_table_selected_count (etable) != 1)
        return NULL;

    row = -1;
    e_table_selected_row_foreach (etable,
                      get_selected_row_cb,
                      &row);
    g_return_val_if_fail (row != -1, NULL);

    return e_cal_model_get_component_at (cal_table->model, row);
}

struct get_selected_uids_closure {
    ECalendarTable *cal_table;
    GSList *objects;
};

/* Used from e_table_selected_row_foreach(), builds a list of the selected UIDs */
static void
add_uid_cb (int model_row, gpointer data)
{
    struct get_selected_uids_closure *closure;
    ECalModelComponent *comp_data;

    closure = data;

    comp_data = e_cal_model_get_component_at (closure->cal_table->model, model_row);

    closure->objects = g_slist_prepend (closure->objects, comp_data);
}

static GSList *
get_selected_objects (ECalendarTable *cal_table)
{
    struct get_selected_uids_closure closure;
    ETable *etable;

    closure.cal_table = cal_table;
    closure.objects = NULL;

    etable = e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));
    e_table_selected_row_foreach (etable, add_uid_cb, &closure);

    return closure.objects;
}

/* Deletes all of the selected components in the table */
static void
delete_selected_components (ECalendarTable *cal_table)
{
    GSList *objs, *l;

    objs = get_selected_objects (cal_table);

    e_calendar_table_set_status_message (cal_table, _("Deleting selected objects"), -1);

    for (l = objs; l; l = l->next) {
        ECalModelComponent *comp_data = (ECalModelComponent *) l->data;
        GError *error = NULL;

        e_cal_remove_object (comp_data->client,
                     icalcomponent_get_uid (comp_data->icalcomp), &error);
        delete_error_dialog (error, E_CAL_COMPONENT_TODO);
        g_clear_error (&error);
    }

    e_calendar_table_set_status_message (cal_table, NULL, -1);

    g_slist_free (objs);
}
static void
add_retract_data (ECalComponent *comp, const char *retract_comment)
{
    icalcomponent *icalcomp = NULL;
    icalproperty *icalprop = NULL;

    icalcomp = e_cal_component_get_icalcomponent (comp);
    if (retract_comment && *retract_comment)
        icalprop = icalproperty_new_x (retract_comment);
    else
        icalprop = icalproperty_new_x ("0");
    icalproperty_set_x_name (icalprop, "X-EVOLUTION-RETRACT-COMMENT");
    icalcomponent_add_property (icalcomp, icalprop);
}

static gboolean
check_for_retract (ECalComponent *comp, ECal *client)
{
    ECalComponentOrganizer org;
    char *email = NULL;
    const char *strip = NULL;
    gboolean ret_val = FALSE;

    if (!(e_cal_component_has_attendees (comp) &&
                e_cal_get_save_schedules (client)))
        return ret_val;

    e_cal_component_get_organizer (comp, &org);
    strip = itip_strip_mailto (org.value);

    if (e_cal_get_cal_address (client, &email, NULL) && !g_ascii_strcasecmp (email, strip)) {
        ret_val = TRUE;
    }

    if (!ret_val)
        ret_val = e_account_list_find(itip_addresses_get(), E_ACCOUNT_FIND_ID_ADDRESS, strip) != NULL;

    g_free (email);
    return ret_val;
}

/**
 * e_calendar_table_delete_selected:
 * @cal_table: A calendar table.
 *
 * Deletes the selected components in the table; asks the user first.
 **/
void
e_calendar_table_delete_selected (ECalendarTable *cal_table)
{
    ETable *etable;
    int n_selected;
    ECalModelComponent *comp_data;
    ECalComponent *comp = NULL;
    gboolean  delete = FALSE;
    GError *error = NULL;

    g_return_if_fail (cal_table != NULL);
    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    etable = e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));

    n_selected = e_table_selected_count (etable);
    if (n_selected <= 0)
        return;

    if (n_selected == 1)
        comp_data = e_calendar_table_get_selected_comp (cal_table);
    else
        comp_data = NULL;

    /* FIXME: this may be something other than a TODO component */

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

    if ((n_selected == 1) && comp && check_for_retract (comp, comp_data->client)) {
        char *retract_comment = NULL;
        gboolean retract = FALSE;

        retract = prompt_retract_dialog (comp, &retract_comment, GTK_WIDGET (cal_table));
        delete = retract;
        if (retract) {
            GList *users = NULL;
            icalcomponent *icalcomp = NULL, *mod_comp = NULL;

            add_retract_data (comp, retract_comment);
            icalcomp = e_cal_component_get_icalcomponent (comp);
            icalcomponent_set_method (icalcomp, ICAL_METHOD_CANCEL);
            if (!e_cal_send_objects (comp_data->client, icalcomp, &users,
                        &mod_comp, &error)) {
                delete_error_dialog (error, E_CAL_COMPONENT_TODO);
                g_clear_error (&error);
                error = NULL;
            } else {

                if (mod_comp)
                    icalcomponent_free (mod_comp);

                if (users) {
                    g_list_foreach (users, (GFunc) g_free, NULL);
                    g_list_free (users);
                }
            }

        }
    } else {
        delete = delete_component_dialog (comp, FALSE, n_selected, E_CAL_COMPONENT_TODO, GTK_WIDGET (cal_table));
    }

    if (delete)
        delete_selected_components (cal_table);

    /* free memory */
    if (comp)
        g_object_unref (comp);
}

/**
 * e_calendar_table_get_selected:
 * @cal_table:
 *
 * Get the currently selected ECalModelComponent's on the table.
 *
 * Return value: A GSList of the components, which should be
 * g_slist_free'd when finished with.
 **/
GSList *
e_calendar_table_get_selected (ECalendarTable *cal_table)
{
    return get_selected_objects(cal_table);
}

/**
 * e_calendar_table_cut_clipboard:
 * @cal_table: A calendar table.
 *
 * Cuts selected tasks in the given calendar table
 */
void
e_calendar_table_cut_clipboard (ECalendarTable *cal_table)
{
    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    e_calendar_table_copy_clipboard (cal_table);
    delete_selected_components (cal_table);
}

static void
clipboard_get_calendar_cb (GtkClipboard *clipboard,
               GtkSelectionData *selection_data,
               guint info,
               gpointer data)
{
    gchar *comp_str = (gchar *) data;

    switch (info) {
    case TARGET_TYPE_VCALENDAR:
        gtk_selection_data_set (selection_data,
                    gdk_atom_intern (target_types[info].target, FALSE), 8,
                    (const guchar *) comp_str,
                    (gint) strlen (comp_str));
        break;
    default:
        break;
    }
}

/* callback for e_table_selected_row_foreach */
static void
copy_row_cb (int model_row, gpointer data)
{
    ECalendarTable *cal_table;
    ECalModelComponent *comp_data;
    gchar *comp_str;
    icalcomponent *child;

    cal_table = E_CALENDAR_TABLE (data);

    g_return_if_fail (cal_table->tmp_vcal != NULL);

    comp_data = e_cal_model_get_component_at (cal_table->model, model_row);
    if (!comp_data)
        return;

    /* add timezones to the VCALENDAR component */
    e_cal_util_add_timezones_from_component (cal_table->tmp_vcal, comp_data->icalcomp);

    /* add the new component to the VCALENDAR component */
    comp_str = icalcomponent_as_ical_string (comp_data->icalcomp);
    child = icalparser_parse_string (comp_str);
    if (child) {
        icalcomponent_add_component (cal_table->tmp_vcal,
                         icalcomponent_new_clone (child));
        icalcomponent_free (child);
    }
    g_free (comp_str);
}

/**
 * e_calendar_table_copy_clipboard:
 * @cal_table: A calendar table.
 *
 * Copies selected tasks into the clipboard
 */
void
e_calendar_table_copy_clipboard (ECalendarTable *cal_table)
{
    ETable *etable;
    GtkClipboard *clipboard;
    char *comp_str;

    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    /* create temporary VCALENDAR object */
    cal_table->tmp_vcal = e_cal_util_new_top_level ();

    etable = e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));
    e_table_selected_row_foreach (etable, copy_row_cb, cal_table);
    comp_str = icalcomponent_as_ical_string (cal_table->tmp_vcal);
    clipboard = gtk_widget_get_clipboard (GTK_WIDGET (cal_table), clipboard_atom);
    if (!gtk_clipboard_set_with_data(clipboard, target_types, n_target_types,
                     clipboard_get_calendar_cb,
                     NULL, comp_str)) {

        /* do not free this pointer, it owns libical */
        /* g_free (comp_str); */
    } else {
        gtk_clipboard_set_can_store (clipboard, target_types + 1, n_target_types - 1);
    }

    /* free memory */
    icalcomponent_free (cal_table->tmp_vcal);
    g_free (comp_str);
    cal_table->tmp_vcal = NULL;
}

static void
clipboard_get_calendar_data (ECalendarTable *cal_table, const gchar *text)
{
    icalcomponent *icalcomp;
    char *uid;
    ECalComponent *comp;
    ECal *client;
    icalcomponent_kind kind;

    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    if (!text || !*text)
        return;

    icalcomp = icalparser_parse_string (text);
    if (!icalcomp)
        return;

    /* check the type of the component */
    kind = icalcomponent_isa (icalcomp);
    if (kind != ICAL_VCALENDAR_COMPONENT &&
        kind != ICAL_VEVENT_COMPONENT &&
        kind != ICAL_VTODO_COMPONENT &&
        kind != ICAL_VJOURNAL_COMPONENT) {
        return;
    }

    client = e_cal_model_get_default_client (cal_table->model);

    e_calendar_table_set_status_message (cal_table, _("Updating objects"), -1);

    if (kind == ICAL_VCALENDAR_COMPONENT) {
        icalcomponent_kind child_kind;
        icalcomponent *subcomp;
        icalcomponent *vcal_comp;

        vcal_comp = icalcomp;
        subcomp = icalcomponent_get_first_component (
            vcal_comp, ICAL_ANY_COMPONENT);
        while (subcomp) {
            child_kind = icalcomponent_isa (subcomp);
            if (child_kind == ICAL_VEVENT_COMPONENT ||
                child_kind == ICAL_VTODO_COMPONENT ||
                child_kind == ICAL_VJOURNAL_COMPONENT) {
                ECalComponent *tmp_comp;

                uid = e_cal_component_gen_uid ();
                tmp_comp = e_cal_component_new ();
                e_cal_component_set_icalcomponent (
                    tmp_comp, icalcomponent_new_clone (subcomp));
                e_cal_component_set_uid (tmp_comp, uid);
                free (uid);

                /* FIXME should we convert start/due/complete times? */
                /* FIXME Error handling */
                e_cal_create_object (client, e_cal_component_get_icalcomponent (tmp_comp), NULL, NULL);

                g_object_unref (tmp_comp);
            }
            subcomp = icalcomponent_get_next_component (
                vcal_comp, ICAL_ANY_COMPONENT);
        }
    } else {
        comp = e_cal_component_new ();
        e_cal_component_set_icalcomponent (comp, icalcomp);
        uid = e_cal_component_gen_uid ();
        e_cal_component_set_uid (comp, (const char *) uid);
        free (uid);

        e_cal_create_object (client, e_cal_component_get_icalcomponent (comp), NULL, NULL);

        g_object_unref (comp);
    }

    e_calendar_table_set_status_message (cal_table, NULL, -1);
}

static void
clipboard_paste_received_cb (GtkClipboard *clipboard,
                 GtkSelectionData *selection_data,
                 gpointer data)
{
    ECalendarTable *cal_table = E_CALENDAR_TABLE (data);
    ETable *e_table = e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));
    GnomeCanvas *canvas = e_table->table_canvas;
    GnomeCanvasItem *item = GNOME_CANVAS (canvas)->focused_item;

    if (gtk_clipboard_wait_is_text_available (clipboard) &&
        GTK_WIDGET_HAS_FOCUS (canvas) &&
        E_IS_TABLE_ITEM (item) &&
        E_TABLE_ITEM (item)->editing_col >= 0 &&
        E_TABLE_ITEM (item)->editing_row >= 0) {
        ETableItem *eti = E_TABLE_ITEM (item);
        ECellView *cell_view = eti->cell_views[eti->editing_col];
        e_cell_text_paste_clipboard (cell_view, eti->editing_col, eti->editing_row);
    } else {
        GdkAtom type = selection_data->type;
        if (type == gdk_atom_intern (target_types[TARGET_TYPE_VCALENDAR].target, TRUE)) {
            gchar *result = NULL;
            result = g_strndup ((const gchar *) selection_data->data,
                        selection_data->length);
            clipboard_get_calendar_data (cal_table, result);
            g_free (result);
        }
    }
    g_object_unref (cal_table);
}

/**
 * e_calendar_table_paste_clipboard:
 * @cal_table: A calendar table.
 *
 * Pastes tasks currently in the clipboard into the given calendar table
 */
void
e_calendar_table_paste_clipboard (ECalendarTable *cal_table)
{
    GtkClipboard *clipboard;
    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    clipboard = gtk_widget_get_clipboard (GTK_WIDGET (cal_table), clipboard_atom);
    g_object_ref (cal_table);

    gtk_clipboard_request_contents (clipboard,
                    gdk_atom_intern (target_types[0].target, FALSE),
                    clipboard_paste_received_cb, cal_table);
}

/* Opens a task in the task editor */
void
e_calendar_table_open_task (ECalendarTable *cal_table, ECal *client, icalcomponent *icalcomp, gboolean assign)
{
    CompEditor *tedit;
    const char *uid;
    guint32 flags = 0;

    uid = icalcomponent_get_uid (icalcomp);

    tedit = e_comp_editor_registry_find (comp_editor_registry, uid);
    if (tedit == NULL) {
        ECalComponent *comp;

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

        if (assign) {
            flags |= COMP_EDITOR_IS_ASSIGNED;

            if (itip_organizer_is_user (comp, client) ||
                    !e_cal_component_has_attendees (comp))
                flags |= COMP_EDITOR_USER_ORG;
        }

        tedit = task_editor_new (client, flags);
        comp_editor_edit_comp (tedit, comp);
        g_object_unref (comp);

        if (flags & COMP_EDITOR_IS_ASSIGNED)
            task_editor_show_assignment (TASK_EDITOR (tedit));

        e_comp_editor_registry_add (comp_editor_registry, tedit, FALSE);
    }
    gtk_window_present (GTK_WINDOW (tedit));
}

/* Opens the task in the specified row */
static void
open_task_by_row (ECalendarTable *cal_table, int row)
{
    ECalModelComponent *comp_data;
    icalproperty *prop;

    comp_data = e_cal_model_get_component_at (cal_table->model, row);
    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_ATTENDEE_PROPERTY);
    e_calendar_table_open_task (cal_table, comp_data->client, comp_data->icalcomp, prop ? TRUE : FALSE);
}

static void
e_calendar_table_on_double_click (ETable *table,
                  gint row,
                  gint col,
                  GdkEvent *event,
                  ECalendarTable *cal_table)
{
    open_task_by_row (cal_table, row);
}

/* popup menu callbacks */

static void
e_calendar_table_on_open_task (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ECalModelComponent *comp_data;
    icalproperty *prop;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_ATTENDEE_PROPERTY);
    if (comp_data)
        e_calendar_table_open_task (cal_table, comp_data->client, comp_data->icalcomp, prop ? TRUE : FALSE);
}

static void
e_calendar_table_on_save_as (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ECalModelComponent *comp_data;
    char *filename;
    char *ical_string;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    if (comp_data == NULL)
        return;

    filename = e_file_dialog_save (_("Save as..."), NULL);
    if (filename == NULL)
        return;

    ical_string = e_cal_get_component_as_string (comp_data->client, comp_data->icalcomp);
    if (ical_string == NULL) {
        g_warning ("Couldn't convert item to a string");
        return;
    }

    e_write_file_uri (filename, ical_string);

    g_free (ical_string);
}

static void
e_calendar_table_on_print_task (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ECalModelComponent *comp_data;
    ECalComponent *comp;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    if (comp_data == NULL)
        return;

    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (comp_data->icalcomp));
    print_comp (comp, comp_data->client, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG);

    g_object_unref (comp);
}

static void
e_calendar_table_on_cut (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;

    e_calendar_table_cut_clipboard (cal_table);
}

static void
e_calendar_table_on_copy (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;

    e_calendar_table_copy_clipboard (cal_table);
}

static void
e_calendar_table_on_paste (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;

    e_calendar_table_paste_clipboard (cal_table);
}

static void
e_calendar_table_on_assign (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ECalModelComponent *comp_data;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    if (comp_data)
        e_calendar_table_open_task (cal_table, comp_data->client, comp_data->icalcomp, TRUE);
}

static void
e_calendar_table_on_forward (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ECalModelComponent *comp_data;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    if (comp_data) {
        ECalComponent *comp;

        comp = e_cal_component_new ();
        e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (comp_data->icalcomp));
        itip_send_comp (E_CAL_COMPONENT_METHOD_PUBLISH, comp, comp_data->client, NULL, NULL, NULL);

        g_object_unref (comp);
    }
}

struct AffectedComponents {
    ECalendarTable *cal_table;
    GSList *components; /* contains pointers to ECalModelComponent */
};

/**
 * get_selected_components_cb
 * Helper function to fill list of selected components in ECalendarTable.
 * This function is called from e_table_selected_row_foreach.
 **/
static void
get_selected_components_cb (int model_row, gpointer data)
{
    struct AffectedComponents *ac = (struct AffectedComponents *) data;

    if (!ac || !ac->cal_table)
        return;

    ac->components = g_slist_prepend (ac->components, e_cal_model_get_component_at (E_CAL_MODEL (ac->cal_table->model), model_row));
}

/**
 * do_for_selected_components
 * Calls function func for all selected components in cal_table.
 *
 * @param cal_table Table with selected components of our interest
 * @param func Function to be called on each selected component from cal_table.
 *        The first parameter of this function is a pointer to ECalModelComponent and
 *        the second parameter of this function is pointer to cal_table
 **/
static void
do_for_selected_components (ECalendarTable *cal_table, GFunc func)
{
    ETable *etable;
    struct AffectedComponents ac;

    g_return_if_fail (cal_table != NULL);

    ac.cal_table = cal_table;
    ac.components = NULL;

    etable = e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable));
    e_table_selected_row_foreach (etable, get_selected_components_cb, &ac);

    g_slist_foreach (ac.components, func, cal_table);
    g_slist_free (ac.components);
}

/**
 * mark_comp_complete_cb
 * Function used in call to @ref do_for_selected_components to mark each component as complete
 **/
static void
mark_comp_complete_cb (gpointer data, gpointer user_data)
{
    ECalendarTable *cal_table;
    ECalModelComponent *comp_data;

    comp_data = (ECalModelComponent *) data;
    cal_table = E_CALENDAR_TABLE (user_data);

    e_cal_model_tasks_mark_comp_complete (E_CAL_MODEL_TASKS (cal_table->model), comp_data);
}

/**
 * mark_comp_incomplete_cb
 * Function used in call to @ref do_for_selected_components to mark each component as incomplete
 **/
static void
mark_comp_incomplete_cb (gpointer data, gpointer user_data)
{
    ECalendarTable *cal_table;
    ECalModelComponent *comp_data;

    comp_data = (ECalModelComponent *) data;
    cal_table = E_CALENDAR_TABLE (user_data);

    e_cal_model_tasks_mark_comp_incomplete (E_CAL_MODEL_TASKS (cal_table->model), comp_data);
}

/* Callback used for the "mark tasks as incomplete" menu item */
static void
mark_as_incomplete_cb (EPopup *ep, EPopupItem *pitem, void *data)
{
    do_for_selected_components (data, mark_comp_incomplete_cb);
}

/* Callback used for the "mark tasks as complete" menu item */
static void
mark_as_complete_cb (EPopup *ep, EPopupItem *pitem, void *data)
{
    do_for_selected_components (data, mark_comp_complete_cb);
}

/* Opens the URL of the task */
static void
open_url_cb (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ECalModelComponent *comp_data;
    icalproperty *prop;

    comp_data = e_calendar_table_get_selected_comp (cal_table);
    if (!comp_data)
        return;

    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_URL_PROPERTY);
    if (!prop)
        return;

    gnome_url_show (icalproperty_get_url (prop), NULL);
}

/* Opens a new task editor */
static void
on_new_task (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;
    ETasks *tasks = g_object_get_data (G_OBJECT (cal_table), "tasks");

    if (!tasks)
        return;

    e_tasks_new_task (tasks);

}

/* Callback for the "delete tasks" menu item */
static void
delete_cb (EPopup *ep, EPopupItem *pitem, void *data)
{
    ECalendarTable *cal_table = data;

    e_calendar_table_delete_selected (cal_table);
}

static EPopupItem tasks_popup_items [] = {
    { E_POPUP_ITEM, "00.newtask", N_("New _Task"), on_new_task, NULL, "stock_task", 0, 0},
    { E_POPUP_BAR, "01.bar" },

    { E_POPUP_ITEM, "03.open", N_("_Open"), e_calendar_table_on_open_task, NULL, GTK_STOCK_OPEN, E_CAL_POPUP_SELECT_ONE },
    { E_POPUP_ITEM, "05.openweb", N_("Open _Web Page"), open_url_cb, NULL, NULL, E_CAL_POPUP_SELECT_ONE, E_CAL_POPUP_SELECT_HASURL },
    { E_POPUP_ITEM, "10.saveas", N_("_Save As..."), e_calendar_table_on_save_as, NULL, GTK_STOCK_SAVE_AS, E_CAL_POPUP_SELECT_ONE },
    { E_POPUP_ITEM, "20.print", N_("P_rint..."), e_calendar_table_on_print_task, NULL, GTK_STOCK_PRINT, E_CAL_POPUP_SELECT_ONE },

    { E_POPUP_BAR, "30.bar" },

    { E_POPUP_ITEM, "40.cut", N_("C_ut"), e_calendar_table_on_cut, NULL, GTK_STOCK_CUT, 0, E_CAL_POPUP_SELECT_EDITABLE },
    { E_POPUP_ITEM, "50.copy", N_("_Copy"), e_calendar_table_on_copy, NULL, GTK_STOCK_COPY, 0, 0 },
    { E_POPUP_ITEM, "60.paste", N_("_Paste"), e_calendar_table_on_paste, NULL, GTK_STOCK_PASTE, 0, E_CAL_POPUP_SELECT_EDITABLE },

    { E_POPUP_BAR, "70.bar" },

    { E_POPUP_ITEM, "80.assign", N_("_Assign Task"), e_calendar_table_on_assign, NULL, NULL, E_CAL_POPUP_SELECT_ONE, E_CAL_POPUP_SELECT_EDITABLE|E_CAL_POPUP_SELECT_ASSIGNABLE },
    { E_POPUP_ITEM, "90.forward", N_("_Forward as iCalendar"), e_calendar_table_on_forward, NULL, "mail-forward", E_CAL_POPUP_SELECT_ONE },
    { E_POPUP_ITEM, "a0.markonecomplete", N_("_Mark as Complete"), mark_as_complete_cb, NULL, NULL, E_CAL_POPUP_SELECT_ONE, E_CAL_POPUP_SELECT_EDITABLE | E_CAL_POPUP_SELECT_NOTCOMPLETE},
    { E_POPUP_ITEM, "b0.markmanycomplete", N_("_Mark Selected Tasks as Complete"), mark_as_complete_cb, NULL, NULL, E_CAL_POPUP_SELECT_MANY, E_CAL_POPUP_SELECT_EDITABLE | E_CAL_POPUP_SELECT_NOTCOMPLETE },
    { E_POPUP_ITEM, "c0.markoneincomplete", N_("_Mark as Incomplete"), mark_as_incomplete_cb, NULL, NULL, E_CAL_POPUP_SELECT_ONE, E_CAL_POPUP_SELECT_EDITABLE|E_CAL_POPUP_SELECT_COMPLETE},
    { E_POPUP_ITEM, "d0.markmanyincomplete", N_("_Mark Selected Tasks as Incomplete"), mark_as_incomplete_cb, NULL, NULL, E_CAL_POPUP_SELECT_MANY, E_CAL_POPUP_SELECT_EDITABLE | E_CAL_POPUP_SELECT_COMPLETE },

    { E_POPUP_BAR, "e0.bar" },

    { E_POPUP_ITEM, "f0.delete", N_("_Delete"), delete_cb, NULL, GTK_STOCK_DELETE, E_CAL_POPUP_SELECT_ONE, E_CAL_POPUP_SELECT_EDITABLE },
    { E_POPUP_ITEM, "g0.deletemany", N_("_Delete Selected Tasks"), delete_cb, NULL, GTK_STOCK_DELETE, E_CAL_POPUP_SELECT_MANY, E_CAL_POPUP_SELECT_EDITABLE },
};

static void
ect_popup_free(EPopup *ep, GSList *items, void *data)
{
    g_slist_free(items);
}

static gint
e_calendar_table_show_popup_menu (ETable *table,
                  GdkEvent *gdk_event,
                  ECalendarTable *cal_table)
{
    GtkMenu *menu;
    GSList *selection, *l, *menus = NULL;
    GPtrArray *events;
    ECalPopup *ep;
    ECalPopupTargetSelect *t;
    int i;

    selection = get_selected_objects (cal_table);
    if (!selection)
        return TRUE;

    /** @HookPoint-ECalPopup: Tasks Table Context Menu
     * @Id: org.gnome.evolution.tasks.table.popup
     * @Class: org.gnome.evolution.calendar.popup:1.0
     * @Target: ECalPopupTargetSelect
     *
     * The context menu on the tasks table.
     */
    ep = e_cal_popup_new("org.gnome.evolution.tasks.table.popup");

    events = g_ptr_array_new();
    for (l=selection;l;l=g_slist_next(l))
        g_ptr_array_add(events, e_cal_model_copy_component_data((ECalModelComponent *)l->data));
    g_slist_free(selection);

    t = e_cal_popup_target_new_select(ep, cal_table->model, events);
    t->target.widget = (GtkWidget *)cal_table;

    for (i=0;i<sizeof(tasks_popup_items)/sizeof(tasks_popup_items[0]);i++)
        menus = g_slist_prepend(menus, &tasks_popup_items[i]);
    e_popup_add_items((EPopup *)ep, menus, NULL, ect_popup_free, cal_table);

    menu = e_popup_create_menu_once((EPopup *)ep, (EPopupTarget *)t, 0);

    gtk_menu_popup(menu, NULL, NULL, NULL, NULL, gdk_event?gdk_event->button.button:0,
               gdk_event?gdk_event->button.time:gtk_get_current_event_time());

    return TRUE;
}

static gint
e_calendar_table_on_right_click (ETable *table,
                 gint row,
                 gint col,
                 GdkEvent *event,
                 ECalendarTable *cal_table)
{
    return e_calendar_table_show_popup_menu (table, event, cal_table);
}

static gboolean
e_calendar_table_on_popup_menu (GtkWidget *widget, gpointer data)
{
    ETable *table = E_TABLE(widget);
    g_return_val_if_fail(table, FALSE);

    return e_calendar_table_show_popup_menu (table, NULL,
                         E_CALENDAR_TABLE(data));
}

static gint
e_calendar_table_on_key_press (ETable *table,
                   gint row,
                   gint col,
                   GdkEventKey *event,
                   ECalendarTable *cal_table)
{
    if (event->keyval == GDK_Delete) {
        delete_cb (NULL, NULL, cal_table);
        return TRUE;
    } else if ((event->keyval == GDK_o)
           &&(event->state & GDK_CONTROL_MASK)) {
        open_task_by_row (cal_table, row);
        return TRUE;
    }

    return FALSE;
}

static void
hide_completed_rows (ECalModel *model, GList *clients_list, char *hide_sexp, GPtrArray *comp_objects)
{
    GList *l, *m, *objects;
    ECal *client;
    int pos;

    for (l = clients_list; l != NULL; l = l->next) {
        client = l->data;

        if (!e_cal_get_object_list (client, hide_sexp, &objects, NULL)) {
            g_warning (G_STRLOC ": Could not get the objects");

            continue;
        }

        for (m = objects; m; m = m->next) {
            ECalModelComponent *comp_data;
            ECalComponentId *id;
            ECalComponent *comp = e_cal_component_new ();

            e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (m->data));
            id = e_cal_component_get_id (comp);

            if ((comp_data =  e_cal_model_get_component_for_uid (model, id))) {
                e_table_model_pre_change (E_TABLE_MODEL (model));
                pos = get_position_in_array (comp_objects, comp_data);
                e_table_model_row_deleted (E_TABLE_MODEL (model), pos);

                if (g_ptr_array_remove (comp_objects, comp_data))
                    e_cal_model_free_component_data (comp_data);
            }
            e_cal_component_free_id (id);
            g_object_unref (comp);
        }

        g_list_foreach (objects, (GFunc) icalcomponent_free, NULL);
        g_list_free (objects);

        /* to notify about changes, because in call of row_deleted there are still all events */
        e_table_model_changed (E_TABLE_MODEL (model));
    }
}

static void
show_completed_rows (ECalModel *model, GList *clients_list, char *show_sexp, GPtrArray *comp_objects)
{
    GList *l, *m, *objects;
    ECal *client;

    for (l = clients_list; l != NULL; l = l->next) {
        client = l->data;

        if (!e_cal_get_object_list (client, show_sexp, &objects, NULL)) {
            g_warning (G_STRLOC ": Could not get the objects");

            continue;
        }

        for (m = objects; m; m = m->next) {
            ECalModelComponent *comp_data;
            ECalComponentId *id;
            ECalComponent *comp = e_cal_component_new ();

            e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (m->data));
            id = e_cal_component_get_id (comp);

            if (!(e_cal_model_get_component_for_uid (model, id))) {
                e_table_model_pre_change (E_TABLE_MODEL (model));
                comp_data = g_new0 (ECalModelComponent, 1);
                comp_data->client = g_object_ref (client);
                comp_data->icalcomp = icalcomponent_new_clone (m->data);
                e_cal_model_set_instance_times (comp_data,
                        e_cal_model_get_timezone (model));
                comp_data->dtstart = comp_data->dtend = comp_data->due = comp_data->completed = NULL;
                comp_data->color = NULL;

                g_ptr_array_add (comp_objects, comp_data);
                e_table_model_row_inserted (E_TABLE_MODEL (model), comp_objects->len - 1);
            }
            e_cal_component_free_id (id);
            g_object_unref (comp);
        }
    }
}

/* Loads the state of the table (headers shown etc.) from the given file. */
void
e_calendar_table_load_state (ECalendarTable *cal_table,
                 gchar      *filename)
{
    struct stat st;

    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    if (g_stat (filename, &st) == 0 && st.st_size > 0
        && S_ISREG (st.st_mode)) {
        e_table_load_state (e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable)), filename);
    }
}


/* Saves the state of the table (headers shown etc.) to the given file. */
void
e_calendar_table_save_state (ECalendarTable *cal_table,
                 gchar      *filename)
{
    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    e_table_save_state (e_table_scrolled_get_table (E_TABLE_SCROLLED (cal_table->etable)),
                filename);
}

/* Returns the current time, for the ECellDateEdit items.
   FIXME: Should probably use the timezone of the item rather than the
   current timezone, though that may be difficult to get from here. */
static struct tm
e_calendar_table_get_current_time (ECellDateEdit *ecde, gpointer data)
{
    icaltimezone *zone;
    struct tm tmp_tm = { 0 };
    struct icaltimetype tt;

    /* Get the current timezone. */
    zone = calendar_config_get_icaltimezone ();

    tt = icaltime_from_timet_with_zone (time (NULL), FALSE, zone);

    /* Now copy it to the struct tm and return it. */
    tmp_tm.tm_year  = tt.year - 1900;
    tmp_tm.tm_mon   = tt.month - 1;
    tmp_tm.tm_mday  = tt.day;
    tmp_tm.tm_hour  = tt.hour;
    tmp_tm.tm_min   = tt.minute;
    tmp_tm.tm_sec   = tt.second;
    tmp_tm.tm_isdst = -1;

    return tmp_tm;
}


#ifdef TRANSLATORS_ONLY

static char *test[] = {
    N_("Click to add a task")
};

#endif

/* Displays messages on the status bar */
#define EVOLUTION_TASKS_PROGRESS_IMAGE "stock_todo"
static GdkPixbuf *progress_icon = NULL;

void
e_calendar_table_set_activity_handler (ECalendarTable *cal_table, EActivityHandler *activity_handler)
{
    g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    cal_table->activity_handler = activity_handler;
}

void
e_calendar_table_set_status_message (ECalendarTable *cal_table, const gchar *message, int percent)
{
        g_return_if_fail (E_IS_CALENDAR_TABLE (cal_table));

    if (!cal_table->activity_handler)
        return;

        if (!message || !*message) {
        if (cal_table->activity_id != 0) {
            e_activity_handler_operation_finished (cal_table->activity_handler, cal_table->activity_id);
            cal_table->activity_id = 0;
        }
        } else if (cal_table->activity_id == 0) {
                char *client_id = g_strdup_printf ("%p", cal_table);

                if (progress_icon == NULL)
                        progress_icon = e_icon_factory_get_icon (EVOLUTION_TASKS_PROGRESS_IMAGE, E_ICON_SIZE_STATUS);

                cal_table->activity_id = e_activity_handler_operation_started (cal_table->activity_handler, client_id,
                                           progress_icon, message, TRUE);

                g_free (client_id);
        } else {

        double progress;

        if (percent < 0)
            progress = -1.0;
        else {
            progress = ((double) percent / 100);
        }

                e_activity_handler_operation_progressing (cal_table->activity_handler, cal_table->activity_id, message, progress);
    }
}

/**
 * e_calendar_table_hide_completed_tasks:
 * @table: A calendar table model.
 * @client_list: Clients List
 *
 * Hide completed tasks.
 */
void
e_calendar_table_process_completed_tasks (ECalendarTable *table, GList *clients_list, gboolean config_changed)
{
    ECalModel *model;
    static GMutex *mutex = NULL;
    char *hide_sexp, *show_sexp;
    GPtrArray *comp_objects = NULL;

    if (!mutex)
        mutex = g_mutex_new ();

    g_mutex_lock (mutex);

    model = e_calendar_table_get_model (table);
    comp_objects = e_cal_model_get_object_array (model);

    hide_sexp = calendar_config_get_hide_completed_tasks_sexp (TRUE);
    show_sexp = calendar_config_get_hide_completed_tasks_sexp (FALSE);

    /* If hide option is unchecked */
    if (!(hide_sexp && show_sexp))
        show_sexp = g_strdup ("(is-completed?)");

    /* Delete rows from model*/
    if (hide_sexp) {
        hide_completed_rows (model, clients_list, hide_sexp, comp_objects);
    }

    /* Insert rows into model */
    if (config_changed) {
        show_completed_rows (model, clients_list, show_sexp, comp_objects);
    }

    g_free (hide_sexp);
    g_free (show_sexp);
    g_mutex_unlock (mutex);
}