path: root/calendar/gui/dialogs/event-page.c

/*
 * Evolution calendar - Main page of the event editor dialog
 *
 * 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:
 *      Federico Mena-Quintero <federico@ximian.com>
 *      Miguel de Icaza <miguel@ximian.com>
 *      Seth Alves <alves@hungry.com>
 *      JP Rosevear <jpr@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <errno.h>
#include <string.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>

#include <libedataserverui/libedataserverui.h>

#include <e-util/e-util.h>
#include <e-util/e-categories-config.h>
#include <e-util/e-dialog-utils.h>
#include <e-util/e-dialog-widgets.h>
#include <e-util/e-util-private.h>

#include <misc/e-dateedit.h>
#include <misc/e-send-options.h>
#include <misc/e-spell-entry.h>
#include <misc/e-buffer-tagger.h>

#include "../e-alarm-list.h"
#include "../e-meeting-attendee.h"
#include "../e-meeting-list-view.h"
#include "../e-meeting-store.h"
#include "../e-timezone-entry.h"

#include "alarm-list-dialog.h"
#include "comp-editor-util.h"
#include "comp-editor.h"
#include "e-send-options-utils.h"
#include "event-page.h"

#define EVENT_PAGE_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), TYPE_EVENT_PAGE, EventPagePrivate))

#define EVENT_PAGE_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), TYPE_EVENT_PAGE, EventPagePrivate))

enum {
    ALARM_NONE,
    ALARM_15_MINUTES,
    ALARM_1_HOUR,
    ALARM_1_DAY,
    ALARM_USER_TIME,
    ALARM_CUSTOM
};

static const gint alarm_map_with_user_time[] = {
    ALARM_NONE,
    ALARM_15_MINUTES,
    ALARM_1_HOUR,
    ALARM_1_DAY,
    ALARM_USER_TIME,
    ALARM_CUSTOM,
    -1
};

static const gint alarm_map_without_user_time[] = {
    ALARM_NONE,
    ALARM_15_MINUTES,
    ALARM_1_HOUR,
    ALARM_1_DAY,
    ALARM_CUSTOM,
    -1
};

/* Private part of the EventPage structure */
struct _EventPagePrivate {
    GtkBuilder *builder;

    /* Widgets from the UI file */
    GtkWidget *main;

    /* Generic informative messages placeholder */
    GtkWidget *info_hbox;
    GtkWidget *info_icon;
    GtkWidget *info_string;

    GtkWidget *summary;
    GtkWidget *summary_label;
    GtkWidget *location;
    GtkWidget *location_label;
    GtkEntryCompletion *location_completion;

    gchar **address_strings;
    gchar *fallback_address;
    EMeetingAttendee *ia;
    gchar *user_add;
    ECalComponent *comp;

    /* For meeting/event */
    GtkWidget *calendar_label;
    GtkWidget *org_cal_label;
    GtkWidget *attendee_box;

    /* Lists of attendees */
    GPtrArray *deleted_attendees;

    GtkWidget *start_time;
    GtkWidget *end_time;
    GtkWidget *end_time_combo;
    GtkWidget *time_hour;
    GtkWidget *hour_selector;
    GtkWidget *minute_selector;
    GtkWidget *start_timezone;
    GtkWidget *end_timezone;
    GtkWidget *timezone_label;
    gboolean   all_day_event;
    GtkWidget *status_icons;
    GtkWidget *alarm_icon;
    GtkWidget *recur_icon;

    GtkWidget *description;

    gboolean  show_time_as_busy;

    GtkWidget *alarm_dialog;
    GtkWidget *alarm_time_combo;
    GtkWidget *alarm_warning;
    GtkWidget *alarm_box;

    GtkWidget *categories_btn;
    GtkWidget *categories;

    GtkWidget *source_combo_box;

    /* Meeting related items */
    GtkWidget *list_box;
    GtkWidget *organizer_table;
    GtkWidget *organizer;
    GtkWidget *add;
    GtkWidget *remove;
    GtkWidget *edit;
    GtkWidget *invite;
    GtkWidget *invite_label;
    GtkWidget *attendees_label;

    /* ListView stuff */
    EMeetingStore *meeting_store;
    EMeetingListView *list_view;
    gint row;

    /* For handling who the organizer is */
    gboolean user_org;
    gboolean existing;

    EAlarmList *alarm_list_store;

    gboolean sendoptions_shown;

    ESendOptionsDialog *sod;
    gchar *old_summary;
    EDurationType alarm_units;
    gint alarm_interval;

    /* This is TRUE if both the start & end timezone are the same. If the
     * start timezone is then changed, we updated the end timezone to the
     * same value, since 99% of events start and end in one timezone. */
    gboolean sync_timezones;
    gboolean is_meeting;

    GtkWidget *alarm_list_dlg_widget;

    /* either with-user-time or without it */
    const gint *alarm_map;

    GCancellable *open_cancellable;
};

static void event_page_set_dates (CompEditorPage *page, CompEditorPageDates *dates);
static void notify_dates_changed (EventPage *epage, struct icaltimetype *start_tt, struct icaltimetype *end_tt);
static gboolean check_start_before_end (struct icaltimetype *start_tt, icaltimezone *start_zone,
                    struct icaltimetype *end_tt, icaltimezone *end_zone, gboolean adjust_end_time);
static void set_attendees (ECalComponent *comp, const GPtrArray *attendees);
static void hour_sel_changed ( GtkSpinButton *widget, EventPage *epage);
static void minute_sel_changed ( GtkSpinButton *widget, EventPage *epage);
static void hour_minute_changed ( EventPage *epage);
static void update_end_time_combo ( EventPage *epage);
static void event_page_select_organizer (EventPage *epage, const gchar *backend_address);
static void set_subscriber_info_string (EventPage *epage, const gchar *backend_address);

G_DEFINE_TYPE (EventPage, event_page, TYPE_COMP_EDITOR_PAGE)

static gboolean
get_current_identity (EventPage *page,
                      gchar **name,
                      gchar **mailto)
{
    EShell *shell;
    CompEditor *editor;
    ESourceRegistry *registry;
    GList *list, *iter;
    GtkWidget *entry;
    const gchar *extension_name;
    const gchar *text;
    gboolean match = FALSE;

    entry = gtk_bin_get_child (GTK_BIN (page->priv->organizer));
    text = gtk_entry_get_text (GTK_ENTRY (entry));

    if (text == NULL || *text == '\0')
        return FALSE;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (page));
    shell = comp_editor_get_shell (editor);

    registry = e_shell_get_registry (shell);
    extension_name = E_SOURCE_EXTENSION_MAIL_IDENTITY;

    list = e_source_registry_list_sources (registry, extension_name);

    for (iter = list; !match && iter != NULL; iter = g_list_next (iter)) {
        ESource *source = E_SOURCE (iter->data);
        ESourceMailIdentity *extension;
        const gchar *id_name;
        const gchar *id_address;
        gchar *identity;

        extension = e_source_get_extension (source, extension_name);

        id_name = e_source_mail_identity_get_name (extension);
        id_address = e_source_mail_identity_get_address (extension);

        if (id_name == NULL || id_address == NULL)
            continue;

        identity = g_strdup_printf ("%s <%s>", id_name, id_address);
        match = (g_ascii_strcasecmp (text, identity) == 0);
        g_free (identity);

        if (match && name != NULL)
            *name = g_strdup (id_name);

        if (match && mailto != NULL)
            *mailto = g_strdup_printf ("MAILTO:%s", id_address);
    }

    g_list_free_full (list, (GDestroyNotify) g_object_unref);

    return match;
}

static void
set_all_day_event_menu (EventPage *epage,
                        gboolean active)
{
    CompEditor *editor;
    GtkAction *action;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    action = comp_editor_get_action (editor, "all-day-event");
    gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), active);
}

/* Sets the 'All Day Event' flag to the given value (without emitting signals),
 * and shows or hides the widgets as appropriate. */
static void
set_all_day (EventPage *epage,
             gboolean all_day)
{
    set_all_day_event_menu (epage, all_day);

    /* TODO implement for in end time selector */
    if (all_day)
        gtk_combo_box_set_active (
            GTK_COMBO_BOX (epage->priv->end_time_combo), 1);
    gtk_widget_set_sensitive (epage->priv->end_time_combo, !all_day);

    e_date_edit_set_show_time (
        E_DATE_EDIT (epage->priv->start_time), !all_day);
    e_date_edit_set_show_time (
        E_DATE_EDIT (epage->priv->end_time), !all_day);
}

static void
enable_busy_time_menu (EventPage *epage,
                       gboolean sensitive)
{
    CompEditor *editor;
    GtkAction *action;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    action = comp_editor_get_action (editor, "show-time-busy");
    gtk_action_set_sensitive (action, sensitive);
}

static void
set_busy_time_menu (EventPage *epage,
                    gboolean active)
{
    CompEditor *editor;
    GtkAction *action;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    action = comp_editor_get_action (editor, "show-time-busy");
    gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), active);
}

static void
clear_widgets (EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;
    CompEditor *editor;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));

    /* Summary, description */
    gtk_entry_set_text (GTK_ENTRY (priv->summary), "");
    gtk_entry_set_text (GTK_ENTRY (priv->location), "");
    gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->description)), "", 0);
    e_buffer_tagger_update_tags (GTK_TEXT_VIEW (priv->description));

    /* Start and end times */
    g_signal_handlers_block_matched (priv->start_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    g_signal_handlers_block_matched (priv->end_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);

    e_date_edit_set_time (E_DATE_EDIT (priv->start_time), 0);
    e_date_edit_set_time (E_DATE_EDIT (priv->end_time), 0);

    g_signal_handlers_unblock_matched (priv->start_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    g_signal_handlers_unblock_matched (priv->end_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);

    epage->priv->all_day_event = FALSE;
    set_all_day (epage, FALSE);

    /* Classification */
    comp_editor_set_classification (editor, E_CAL_COMPONENT_CLASS_PUBLIC);

    /* Show Time As (Transparency) */
    priv->show_time_as_busy = TRUE;
    set_busy_time_menu (epage, TRUE);

    /* Alarm */
    e_dialog_combo_box_set (priv->alarm_time_combo, ALARM_NONE, priv->alarm_map);

    /* Categories */
    gtk_entry_set_text (GTK_ENTRY (priv->categories), "");
}

static gboolean
is_custom_alarm (ECalComponentAlarm *ca,
                 gchar *old_summary,
                 EDurationType user_units,
                 gint user_interval,
                 gint *alarm_type)
{
    ECalComponentAlarmTrigger trigger;
    ECalComponentAlarmRepeat repeat;
    ECalComponentAlarmAction action;
    ECalComponentText desc;
    icalcomponent *icalcomp;
    icalproperty *icalprop;
    icalattach *attach;
    gboolean needs_desc = FALSE;

    e_cal_component_alarm_get_action (ca, &action);
    if (action != E_CAL_COMPONENT_ALARM_DISPLAY)
        return TRUE;

    e_cal_component_alarm_get_attach (ca, &attach);
    if (attach)
        return TRUE;

    icalcomp = e_cal_component_alarm_get_icalcomponent (ca);
    icalprop = icalcomponent_get_first_property (icalcomp, ICAL_X_PROPERTY);
    while (icalprop) {
        const gchar *x_name;

        x_name = icalproperty_get_x_name (icalprop);
        if (!strcmp (x_name, "X-EVOLUTION-NEEDS-DESCRIPTION"))
            needs_desc = TRUE;

        icalprop = icalcomponent_get_next_property (icalcomp, ICAL_X_PROPERTY);
    }

    if (!needs_desc) {
        e_cal_component_alarm_get_description (ca, &desc);
        if (!desc.value || !old_summary || strcmp (desc.value, old_summary))
            return TRUE;
    }

    e_cal_component_alarm_get_repeat (ca, &repeat);
    if (repeat.repetitions != 0)
        return TRUE;

    if (e_cal_component_alarm_has_attendees (ca))
        return TRUE;

    e_cal_component_alarm_get_trigger (ca, &trigger);
    if (trigger.type != E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_START)
        return TRUE;

    if (trigger.u.rel_duration.is_neg != 1)
        return TRUE;

    if (trigger.u.rel_duration.weeks != 0)
        return TRUE;

    if (trigger.u.rel_duration.seconds != 0)
        return TRUE;

    if (trigger.u.rel_duration.days == 1
        && trigger.u.rel_duration.hours == 0
        && trigger.u.rel_duration.minutes == 0) {
        if (alarm_type)
            *alarm_type = ALARM_1_DAY;
        return FALSE;
    }

    if (trigger.u.rel_duration.days == 0
        && trigger.u.rel_duration.hours == 1
        && trigger.u.rel_duration.minutes == 0) {
        if (alarm_type)
            *alarm_type = ALARM_1_HOUR;
        return FALSE;
    }

    if (trigger.u.rel_duration.days == 0
        && trigger.u.rel_duration.hours == 0
        && trigger.u.rel_duration.minutes == 15) {
        if (alarm_type)
            *alarm_type = ALARM_15_MINUTES;
        return FALSE;
    }

    if (user_interval != -1) {
        switch (user_units) {
        case E_DURATION_DAYS:
            if (trigger.u.rel_duration.days == user_interval
                && trigger.u.rel_duration.hours == 0
                && trigger.u.rel_duration.minutes == 0) {
                if (alarm_type)
                    *alarm_type = ALARM_USER_TIME;
                return FALSE;
            }
            break;

        case E_DURATION_HOURS:
            if (trigger.u.rel_duration.days == 0
                && trigger.u.rel_duration.hours == user_interval
                && trigger.u.rel_duration.minutes == 0) {
                if (alarm_type)
                    *alarm_type = ALARM_USER_TIME;
                return FALSE;
            }
            break;

        case E_DURATION_MINUTES:
            if (trigger.u.rel_duration.days == 0
                && trigger.u.rel_duration.hours == 0
                && trigger.u.rel_duration.minutes == user_interval) {
                if (alarm_type)
                    *alarm_type = ALARM_USER_TIME;
                return FALSE;
            }
            break;
        }
    }

    return TRUE;
}

static gboolean
is_custom_alarm_store (EAlarmList *alarm_list_store,
                       gchar *old_summary,
                       EDurationType user_units,
                       gint user_interval,
                       gint *alarm_type)
{
    const ECalComponentAlarm *alarm;
    GtkTreeModel *model;
    GtkTreeIter iter;
    gboolean valid_iter;

    model = GTK_TREE_MODEL (alarm_list_store);

    valid_iter = gtk_tree_model_get_iter_first (model, &iter);
    if (!valid_iter)
        return FALSE;

    alarm = e_alarm_list_get_alarm (alarm_list_store, &iter);
    if (is_custom_alarm ((ECalComponentAlarm *) alarm, old_summary, user_units, user_interval, alarm_type))
        return TRUE;

    valid_iter = gtk_tree_model_iter_next (model, &iter);
    if (valid_iter)
        return TRUE;

    return FALSE;
}

static gboolean
is_custom_alarm_uid_list (ECalComponent *comp,
                          GList *alarms,
                          gchar *old_summary,
                          EDurationType user_units,
                          gint user_interval,
                          gint *alarm_type)
{
    ECalComponentAlarm *ca;
    gboolean result;

    if (g_list_length (alarms) > 1)
        return TRUE;

    ca = e_cal_component_get_alarm (comp, alarms->data);
    result = is_custom_alarm (
        ca, old_summary, user_units, user_interval, alarm_type);
    e_cal_component_alarm_free (ca);

    return result;
}

/* returns whether changed info text */
static gboolean
check_starts_in_the_past (EventPage *epage)
{
    EventPagePrivate *priv;
    struct icaltimetype start_tt = icaltime_null_time ();
    gboolean date_set;

    if ((comp_editor_get_flags (comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage))) & COMP_EDITOR_NEW_ITEM) == 0)
        return FALSE;

    priv = epage->priv;
    date_set = e_date_edit_get_date (E_DATE_EDIT (priv->start_time), &start_tt.year, &start_tt.month, &start_tt.day);

    g_return_val_if_fail (date_set, FALSE);

    if (priv->all_day_event) {
        start_tt.is_date = TRUE;
    } else {
        e_date_edit_get_time_of_day (E_DATE_EDIT (priv->start_time), &start_tt.hour, &start_tt.minute);
        start_tt.zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->start_timezone));
    }

    if (comp_editor_test_time_in_the_past (start_tt)) {
        gchar *tmp = g_strconcat ("<b>", _("Event's start time is in the past"), "</b>", NULL);
        event_page_set_info_string (epage, GTK_STOCK_DIALOG_WARNING, tmp);
        g_free (tmp);
    } else {
        event_page_set_info_string (epage, NULL, NULL);
    }

    return TRUE;
}

static void
alarm_image_button_clicked_cb (GtkWidget *button,
                               EventPage *epage)
{
    CompEditor *editor;
    GtkAction *action;

    g_return_if_fail (IS_EVENT_PAGE (epage));

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    action = comp_editor_get_action (editor, "alarms");
    gtk_action_activate (action);
}

static GtkWidget *
create_alarm_image_button (const gchar *image_text,
                           const gchar *tip_text,
                           EventPage *epage)
{
    GtkWidget *image, *button;

    button = gtk_button_new ();
    gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
    gtk_widget_set_can_focus (button, FALSE);

    image = gtk_image_new_from_icon_name (image_text, GTK_ICON_SIZE_MENU);

    gtk_container_add ((GtkContainer *) button, image);
    gtk_widget_show_all (button);
    gtk_widget_set_tooltip_text (button, tip_text);

    g_signal_connect (
        button, "clicked",
        G_CALLBACK (alarm_image_button_clicked_cb), epage);

    return button;
}

static void
sensitize_widgets (EventPage *epage)
{
    ECalClient *client;
    EShell *shell;
    CompEditor *editor;
    CompEditorFlags flags;
    GtkActionGroup *action_group;
    GtkAction *action;
    gboolean read_only, custom, alarm, sens = TRUE, sensitize;
    EventPagePrivate *priv;
    gboolean delegate;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    client = comp_editor_get_client (editor);
    flags = comp_editor_get_flags (editor);
    shell = comp_editor_get_shell (editor);

    priv = epage->priv;
    if (flags & COMP_EDITOR_MEETING)
        sens = flags & COMP_EDITOR_USER_ORG;

    read_only = e_client_is_readonly (E_CLIENT (client));

    delegate = flags & COMP_EDITOR_DELEGATE;

    sensitize = !read_only && sens;

    if (read_only) {
        gchar *tmp = g_strconcat ("<b>", _("Event cannot be edited, because the selected calendar is read only"), "</b>", NULL);
        event_page_set_info_string (epage, GTK_STOCK_DIALOG_INFO, tmp);
        g_free (tmp);
    } else if (!sens) {
        gchar *tmp = g_strconcat ("<b>", _("Event cannot be fully edited, because you are not the organizer"), "</b>", NULL);
        event_page_set_info_string (epage, GTK_STOCK_DIALOG_INFO, tmp);
        g_free (tmp);
    } else if (!check_starts_in_the_past (epage)) {
        event_page_set_info_string (epage, NULL, NULL);
    }

    alarm = e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map) != ALARM_NONE;
    custom = is_custom_alarm_store (priv->alarm_list_store, priv->old_summary, priv->alarm_units, priv->alarm_interval, NULL) ||
         e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map)  == ALARM_CUSTOM ? TRUE : FALSE;

    if (alarm && !priv->alarm_icon) {
        priv->alarm_icon = create_alarm_image_button ("stock_bell", _("This event has reminders"), epage);
        gtk_box_pack_start ((GtkBox *) priv->status_icons, priv->alarm_icon, FALSE, FALSE, 6);
    }

    /* The list of organizers is set to be non-editable. Otherwise any
     * change in the displayed list causes an 'Account not found' error.
     */
    gtk_editable_set_editable (GTK_EDITABLE (gtk_bin_get_child (GTK_BIN (priv->organizer))), FALSE);

    gtk_editable_set_editable (GTK_EDITABLE (priv->summary), !read_only);
    gtk_editable_set_editable (GTK_EDITABLE (priv->location), sensitize);
    gtk_widget_set_sensitive (priv->alarm_box, custom);
    gtk_widget_set_sensitive (priv->start_time, sensitize);
    gtk_widget_set_sensitive (priv->start_timezone, sensitize);
    gtk_widget_set_sensitive (priv->end_time, sensitize);
    gtk_widget_set_sensitive (priv->end_timezone, sensitize);
    gtk_text_view_set_editable (GTK_TEXT_VIEW (priv->description), !read_only);
    gtk_widget_set_sensitive (priv->alarm_time_combo, !read_only);
    gtk_widget_set_sensitive (priv->categories_btn, !read_only);
    /*TODO implement the for portion of the end time selector */
    if (flags & COMP_EDITOR_NEW_ITEM) {
        if (priv->all_day_event)
            gtk_combo_box_set_active (GTK_COMBO_BOX (priv->end_time_combo), 1);
        else
            gtk_combo_box_set_active (GTK_COMBO_BOX (priv->end_time_combo), 0);
    } else
        gtk_combo_box_set_active (GTK_COMBO_BOX (priv->end_time_combo), 1);

    gtk_widget_set_sensitive (priv->hour_selector, sensitize);
    gtk_widget_set_sensitive (priv->minute_selector, sensitize);

    gtk_editable_set_editable (GTK_EDITABLE (priv->categories), !read_only);

    if (delegate) {
        gtk_widget_set_sensitive (priv->source_combo_box, FALSE);
    }

    gtk_widget_set_sensitive (priv->organizer, !read_only);
    gtk_widget_set_sensitive (priv->add, (!read_only &&  sens) || delegate);
    gtk_widget_set_sensitive (priv->edit, (!read_only && sens) || delegate);
    e_meeting_list_view_set_editable (priv->list_view, (!read_only && sens) || delegate);
    gtk_widget_set_sensitive (priv->remove, (!read_only &&  sens) || delegate);
    gtk_widget_set_sensitive (priv->invite, (!read_only &&  sens) || delegate);
    gtk_widget_set_sensitive (GTK_WIDGET (priv->list_view), !read_only);

    action_group = comp_editor_get_action_group (editor, "editable");
    gtk_action_group_set_sensitive (action_group, !read_only);

    action_group = comp_editor_get_action_group (editor, "individual");
    gtk_action_group_set_sensitive (action_group, sensitize);

    action = comp_editor_get_action (editor, "free-busy");
    gtk_action_set_sensitive (action, sensitize);

    if (!priv->is_meeting) {
        gtk_widget_hide (priv->calendar_label);
        gtk_widget_hide (priv->list_box);
        gtk_widget_hide (priv->attendee_box);
        gtk_widget_hide (priv->organizer);
        gtk_label_set_text_with_mnemonic ((GtkLabel *) priv->org_cal_label, _("_Calendar:"));
        gtk_label_set_mnemonic_widget ((GtkLabel *) priv->org_cal_label, priv->source_combo_box);
    } else {
        gtk_widget_show (priv->calendar_label);
        gtk_widget_show (priv->list_box);
        if (!e_shell_get_express_mode (shell))
            gtk_widget_show (priv->attendee_box);
        gtk_widget_show (priv->organizer);
        gtk_label_set_text_with_mnemonic ((GtkLabel *) priv->org_cal_label, _("Or_ganizer:"));
    }
}

static void
update_time (EventPage *epage,
             ECalComponentDateTime *start_date,
             ECalComponentDateTime *end_date)
{
    CompEditor *editor;
    ECalClient *client;
    GtkAction *action;
    struct icaltimetype *start_tt, *end_tt, implied_tt;
    icaltimezone *start_zone = NULL, *def_zone = NULL;
    gboolean all_day_event, homezone = TRUE;
    gboolean show_timezone;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    client = comp_editor_get_client (editor);

    if (start_date->tzid) {
        /* Note that if we are creating a new event, the timezones may not be
         * on the server, so we try to get the builtin timezone with the TZID
         * first. */
        start_zone = icaltimezone_get_builtin_timezone_from_tzid (start_date->tzid);
        if (!start_zone) {
            /* FIXME: Handle error better. */
            GError *error = NULL;
            if (!e_cal_client_get_timezone_sync (client, start_date->tzid, &start_zone, NULL, &error)) {
                g_warning ("Couldn't get timezone '%s' from server: %s",
                    start_date->tzid ? start_date->tzid : "", error ? error->message : "Unknown error");
                if (error)
                    g_error_free (error);
            }
        }
    }

    /* If both times are DATE values, we set the 'All Day Event' checkbox.
     * Also, if DTEND is after DTSTART, we subtract 1 day from it. */
    all_day_event = FALSE;
    start_tt = start_date->value;
    end_tt = end_date->value;
    if (!end_tt && start_tt->is_date) {
        end_tt = &implied_tt;
        *end_tt = *start_tt;
        icaltime_adjust (end_tt, 1, 0, 0, 0);
    }

    if (start_tt->is_date && end_tt->is_date) {
        all_day_event = TRUE;
        if (icaltime_compare_date_only (*end_tt, *start_tt) > 0) {
            icaltime_adjust (end_tt, -1, 0, 0, 0);
        }
    }

    epage->priv->all_day_event = all_day_event;
    set_all_day (epage, all_day_event);

    /* If it is an all day event, we set both timezones to the current
     * timezone, so that if the user toggles the 'All Day Event' checkbox
     * the event uses the current timezone rather than none at all. */
    if (all_day_event)
        start_zone = e_meeting_store_get_timezone (
            epage->priv->meeting_store);

    g_signal_handlers_block_matched (
        epage->priv->start_time, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);
    g_signal_handlers_block_matched (
        epage->priv->end_time, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);

    e_date_edit_set_date (
        E_DATE_EDIT (epage->priv->start_time),
        start_tt->year, start_tt->month, start_tt->day);
    e_date_edit_set_time_of_day (
        E_DATE_EDIT (epage->priv->start_time),
        start_tt->hour, start_tt->minute);

    e_date_edit_set_date (
        E_DATE_EDIT (epage->priv->end_time),
        end_tt->year, end_tt->month, end_tt->day);
    e_date_edit_set_time_of_day (
        E_DATE_EDIT (epage->priv->end_time),
        end_tt->hour, end_tt->minute);

    g_signal_handlers_unblock_matched (
        epage->priv->start_time, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);
    g_signal_handlers_unblock_matched (
        epage->priv->end_time, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);

    /* Set the timezones, and set sync_timezones to TRUE if both timezones
     * are the same. */
    g_signal_handlers_block_matched (
        epage->priv->start_timezone, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);
    g_signal_handlers_block_matched (
        epage->priv->end_timezone, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);

    if (start_zone)
        e_timezone_entry_set_timezone (
            E_TIMEZONE_ENTRY (epage->priv->start_timezone),
            start_zone);
    def_zone = e_meeting_store_get_timezone (epage->priv->meeting_store);
    if (!def_zone || !start_zone || strcmp (icaltimezone_get_tzid (def_zone), icaltimezone_get_tzid (start_zone)))
         homezone = FALSE;

    action = comp_editor_get_action (editor, "view-time-zone");
    show_timezone = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    event_page_set_show_timezone (epage, (show_timezone || !homezone) & !all_day_event);

    /*unblock the endtimezone widget*/
    g_signal_handlers_unblock_matched (
        epage->priv->end_timezone, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);
    g_signal_handlers_unblock_matched (
        epage->priv->start_timezone, G_SIGNAL_MATCH_DATA,
        0, 0, NULL, NULL, epage);

    epage->priv->sync_timezones = TRUE;

    update_end_time_combo (epage);
}

static void
organizer_changed_cb (GtkEntry *entry,
                      EventPage *epage)
{
    gchar *name;
    gchar *mailto;

    g_return_if_fail (GTK_IS_ENTRY (entry));
    g_return_if_fail (IS_EVENT_PAGE (epage));

    if (!epage->priv->ia)
        return;

    if (!get_current_identity (epage, &name, &mailto))
        return;

    /* XXX EMeetingAttendee takes ownership of the strings. */
    e_meeting_attendee_set_cn (epage->priv->ia, name);
    e_meeting_attendee_set_address (epage->priv->ia, mailto);
}

static void
event_page_dispose (GObject *object)
{
    EventPagePrivate *priv;

    priv = EVENT_PAGE_GET_PRIVATE (object);

    if (priv->open_cancellable) {
        g_cancellable_cancel (priv->open_cancellable);
        g_object_unref (priv->open_cancellable);
        priv->open_cancellable = NULL;
    }

    if (priv->location_completion != NULL) {
        g_object_unref (priv->location_completion);
        priv->location_completion = NULL;
    }

    if (priv->comp != NULL) {
        g_object_unref (priv->comp);
        priv->comp = NULL;
    }

    if (priv->main != NULL) {
        g_object_unref (priv->main);
        priv->main = NULL;
    }

    if (priv->builder != NULL) {
        g_object_unref (priv->builder);
        priv->builder = NULL;
    }

    if (priv->alarm_list_store != NULL) {
        g_object_unref (priv->alarm_list_store);
        priv->alarm_list_store = NULL;
    }

    if (priv->sod != NULL) {
        g_object_unref (priv->sod);
        priv->sod = NULL;
    }

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

static void
event_page_finalize (GObject *object)
{
    EventPagePrivate *priv;

    priv = EVENT_PAGE_GET_PRIVATE (object);

    g_strfreev (priv->address_strings);
    g_free (priv->fallback_address);

    g_ptr_array_foreach (
        priv->deleted_attendees, (GFunc) g_object_unref, NULL);
    g_ptr_array_free (priv->deleted_attendees, TRUE);

    g_free (priv->old_summary);

    priv->alarm_list_dlg_widget = NULL;

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

static GtkWidget *
event_page_get_widget (CompEditorPage *page)
{
    EventPage *event_page = EVENT_PAGE (page);

    return event_page->priv->main;
}

static void
event_page_focus_main_widget (CompEditorPage *page)
{
    EventPage *event_page = EVENT_PAGE (page);

    gtk_widget_grab_focus (event_page->priv->summary);
}

static void
event_page_load_locations_list (CompEditorPage *page,
                                ECalComponent *comp)
{
    EShell *shell;
    EShellBackend *backend;
    EventPagePrivate *priv;
    CompEditor *editor;
    GtkListStore *store;
    GError *error;

    const gchar *cache_dir;
    gchar *file_name, *contents;
    gchar **locations;
    gint row;

    priv = EVENT_PAGE (page)->priv;
    editor = comp_editor_page_get_editor (page);

    shell = comp_editor_get_shell (editor);
    backend = e_shell_get_backend_by_name (shell, "calendar");
    cache_dir = e_shell_backend_get_config_dir (backend);
    file_name = g_build_filename (cache_dir, "locations", NULL);

    if (!g_file_test (file_name, G_FILE_TEST_EXISTS)) {
        g_free (file_name);
        return;
    }

    error = NULL;
    g_file_get_contents (file_name, &contents, NULL, &error);
    if (error) {
        g_warning ("%s: Failed to load locations list: %s", G_STRFUNC, error->message);
        g_error_free (error);
        g_free (file_name);
        return;
    }

    locations = g_strsplit (contents, "\n", 0);
    if (!locations) {
        g_free (contents);
        g_free (file_name);
        return;
    }

    row = 0;
    store = GTK_LIST_STORE (gtk_entry_completion_get_model (priv->location_completion));
    while (locations[row] && *locations[row]) {
        GtkTreeIter iter;
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter, 0, locations[row], -1);
        row++;
    }

    g_strfreev (locations);
    g_free (contents);
    g_free (file_name);
}

static void
event_page_save_locations_list (CompEditorPage *page,
                                ECalComponent *comp)
{
    EShell *shell;
    EShellBackend *backend;
    EventPagePrivate *priv;
    CompEditor *editor;
    GError *error;
    GtkTreeModel *model;
    GtkTreeIter iter;

    const gchar *cache_dir;
    const gchar *current_location;
    gchar *file_name;
    GString *contents;

    priv = EVENT_PAGE (page)->priv;
    editor = comp_editor_page_get_editor (page);

    shell = comp_editor_get_shell (editor);
    backend = e_shell_get_backend_by_name (shell, "calendar");
    cache_dir = e_shell_backend_get_config_dir (backend);
    file_name = g_build_filename (cache_dir, "locations", NULL);

    if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
        gint r = g_mkdir_with_parents (cache_dir, 0700);
        if (r < 0) {
            g_warning ("%s: Failed to create %s: %s", G_STRFUNC, cache_dir, g_strerror (errno));
            g_free (file_name);
            return;
        }
    }

    current_location = gtk_entry_get_text (GTK_ENTRY (priv->location));

    /* Put current locatin on the very top of the list */
    contents = g_string_new (current_location);
    g_string_append_c (contents, '\n');

    model = gtk_entry_completion_get_model (priv->location_completion);
    if (gtk_tree_model_get_iter_first (model, &iter)) {
        gint i = 0;
        do {
            gchar *str;

            gtk_tree_model_get (model, &iter, 0, &str, -1);

            /* Skip the current location */
            if (str && *str && g_ascii_strcasecmp (str, current_location) != 0)
                g_string_append_printf (contents, "%s\n", str);

            g_free (str);

            i++;

        } while (gtk_tree_model_iter_next (model, &iter) && (i < 20));
    }

    error = NULL;
    g_file_set_contents (file_name, contents->str, -1, &error);
    if (error) {
        g_warning ("%s: Failed to save locations: %s", G_STRFUNC, error->message);
        g_error_free (error);
    }

    g_string_free (contents, TRUE);
    g_free (file_name);
}

static gboolean
event_page_fill_widgets (CompEditorPage *page,
                         ECalComponent *comp)
{
    ECalClient *client;
    CompEditor *editor;
    CompEditorFlags flags;
    EventPage *epage;
    EventPagePrivate *priv;
    ECalComponentText text;
    ECalComponentClassification cl;
    ECalComponentTransparency transparency;
    ECalComponentDateTime start_date, end_date;
    ESourceRegistry *registry;
    EShell *shell;
    const gchar *location, *uid = NULL;
    const gchar *categories;
    gchar *backend_addr = NULL;
    GSList *l;
    gboolean validated = TRUE;

    epage = EVENT_PAGE (page);
    priv = epage->priv;

    editor = comp_editor_page_get_editor (page);
    client = comp_editor_get_client (editor);
    flags = comp_editor_get_flags (editor);
    shell = comp_editor_get_shell (editor);

    registry = e_shell_get_registry (shell);

    if (!e_cal_component_has_organizer (comp)) {
        flags |= COMP_EDITOR_USER_ORG;
        comp_editor_set_flags (editor, flags);
    }

    /* Clean out old data */
    if (priv->comp != NULL)
        g_object_unref (priv->comp);
    priv->comp = NULL;

    g_ptr_array_foreach (
        priv->deleted_attendees, (GFunc) g_object_unref, NULL);
    g_ptr_array_set_size (priv->deleted_attendees, 0);

    /* Clean the page */
    clear_widgets (epage);

    /* Summary, location, description(s) */

    /* Component for cancellation */
    priv->comp = e_cal_component_clone (comp);
    comp_editor_copy_new_attendees (priv->comp, comp);

    e_cal_component_get_summary (comp, &text);
    if (text.value != NULL)
        gtk_entry_set_text (GTK_ENTRY (priv->summary), text.value);
    else
        gtk_entry_set_text (GTK_ENTRY (priv->summary), "");
    priv->old_summary = g_strdup (text.value);

    e_cal_component_get_location (comp, &location);
    if (location != NULL)
        gtk_entry_set_text (GTK_ENTRY (priv->location), location);
    else
        gtk_entry_set_text (GTK_ENTRY (priv->location), "");
    event_page_load_locations_list (page, comp);

    e_cal_component_get_description_list (comp, &l);
    if (l && l->data) {
        ECalComponentText *dtext;

        dtext = l->data;
        gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->description)),
                      dtext->value ? dtext->value : "", -1);
    } else {
        gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->description)),
                      "", 0);
    }
    e_cal_component_free_text_list (l);
    e_buffer_tagger_update_tags (GTK_TEXT_VIEW (priv->description));

    e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
    set_subscriber_info_string (epage, backend_addr);

    if (priv->is_meeting) {
        ECalComponentOrganizer organizer;
        gchar *name = NULL;
        gchar *mailto = NULL;

        priv->user_add = itip_get_comp_attendee (
            registry, comp, client);

        /* Organizer strings */
        event_page_select_organizer (epage, backend_addr);

        /* If there is an existing organizer show it properly */
        if (e_cal_component_has_organizer (comp)) {
            e_cal_component_get_organizer (comp, &organizer);
            if (organizer.value != NULL) {
                const gchar *strip = itip_strip_mailto (organizer.value);
                gchar *string;

                if (itip_organizer_is_user (registry, comp, client) ||
                    itip_sentby_is_user (registry, comp, client)) {
                    if (e_client_check_capability (
                                E_CLIENT (client),
                                CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
                        priv->user_org = TRUE;
                } else {
                    if (e_client_check_capability (
                                E_CLIENT (client),
                                CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
                    gtk_widget_set_sensitive (priv->invite, FALSE);
                    gtk_widget_set_sensitive (priv->add, FALSE);
                    gtk_widget_set_sensitive (priv->edit, FALSE);
                    gtk_widget_set_sensitive (priv->remove, FALSE);
                    priv->user_org = FALSE;
                }

                if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_ORGANIZER) && (flags & COMP_EDITOR_DELEGATE))
                    string = g_strdup (backend_addr);
                else if ( organizer.cn != NULL)
                    string = g_strdup_printf ("%s <%s>", organizer.cn, strip);
                else
                    string = g_strdup (strip);

                g_signal_handlers_block_by_func (gtk_bin_get_child (GTK_BIN (priv->organizer)), organizer_changed_cb, epage);

                if (!priv->user_org) {
                    GtkComboBox *combo_box;
                    GtkListStore *list_store;
                    GtkTreeModel *model;
                    GtkTreeIter iter;

                    combo_box = GTK_COMBO_BOX (priv->organizer);
                    model = gtk_combo_box_get_model (combo_box);
                    list_store = GTK_LIST_STORE (model);

                    gtk_list_store_clear (list_store);
                    gtk_list_store_append (list_store, &iter);
                    gtk_list_store_set (list_store, &iter, 0, string, -1);
                    gtk_combo_box_set_active (combo_box, 0);
                    gtk_editable_set_editable (GTK_EDITABLE (gtk_bin_get_child (GTK_BIN (priv->organizer))), FALSE);
                } else {
                    gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (priv->organizer))), string);
                }

                g_signal_handlers_unblock_by_func (gtk_bin_get_child (GTK_BIN (priv->organizer)), organizer_changed_cb, epage);

                g_free (string);
                priv->existing = TRUE;
            }
        } else if (get_current_identity (epage, &name, &mailto)) {
            EMeetingAttendee *attendee;
            gchar *backend_mailto = NULL;

            if (backend_addr != NULL && *backend_addr != '\0') {
                backend_mailto = g_strdup_printf (
                    "MAILTO:%s", backend_addr);
                if (g_ascii_strcasecmp (backend_mailto, mailto) == 0) {
                    g_free (backend_mailto);
                    backend_mailto = NULL;
                }
            }

            attendee =
                e_meeting_store_add_attendee_with_defaults (
                priv->meeting_store);
            priv->ia = g_object_ref (attendee);

            if (backend_mailto == NULL) {
                e_meeting_attendee_set_cn (attendee, name);
                e_meeting_attendee_set_address (attendee, mailto);
                name = mailto = NULL;
            } else {
                e_meeting_attendee_set_address (attendee, backend_mailto);
                e_meeting_attendee_set_sentby (attendee, mailto);
                backend_mailto = mailto = NULL;
            }

            if (client && e_cal_client_check_organizer_must_accept (client))
                e_meeting_attendee_set_status (
                    attendee, ICAL_PARTSTAT_NEEDSACTION);
            else
                e_meeting_attendee_set_status (
                    attendee, ICAL_PARTSTAT_ACCEPTED);

            e_meeting_list_view_add_attendee_to_name_selector (
                E_MEETING_LIST_VIEW (priv->list_view), attendee);

            g_free (backend_mailto);
        }

        g_free (mailto);
        g_free (name);
    }

    g_free (backend_addr);

    /* Start and end times */
    e_cal_component_get_dtstart (comp, &start_date);
    e_cal_component_get_dtend (comp, &end_date);
    if (!start_date.value) {
        comp_editor_page_display_validation_error (page, _("Event with no start date"), priv->start_time);
        validated = FALSE;
    } else if (!end_date.value) {
        comp_editor_page_display_validation_error (page, _("Event with no end date"), priv->end_time);
        validated = FALSE;
    } else
        update_time (epage, &start_date, &end_date);

    e_cal_component_free_datetime (&start_date);
    e_cal_component_free_datetime (&end_date);

    update_end_time_combo (epage);
    /* Classification */
    e_cal_component_get_classification (comp, &cl);
    comp_editor_set_classification (editor, cl);

    /* Show Time As (Transparency) */
    e_cal_component_get_transparency (comp, &transparency);
    switch (transparency) {
    case E_CAL_COMPONENT_TRANSP_TRANSPARENT:
        priv->show_time_as_busy = FALSE;
        set_busy_time_menu (epage, FALSE);
        break;

    default:
        priv->show_time_as_busy = TRUE;
        set_busy_time_menu (epage, TRUE);
        break;
    }

    if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_TRANSPARENCY))
        enable_busy_time_menu (epage, FALSE);
    else
        enable_busy_time_menu (epage, TRUE);

    /* Alarms */
    g_signal_handlers_block_matched (priv->alarm_time_combo, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    g_signal_handlers_block_matched (priv->alarm_list_store, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);

    if (e_cal_component_has_alarms (comp)) {
        GList *alarms, *list;
        gint alarm_type;

        alarms = e_cal_component_get_alarm_uids (comp);
        if (!is_custom_alarm_uid_list (comp, alarms, priv->old_summary, priv->alarm_units, priv->alarm_interval, &alarm_type))
            e_dialog_combo_box_set (priv->alarm_time_combo, alarm_type, priv->alarm_map);
        else
            e_dialog_combo_box_set (priv->alarm_time_combo, ALARM_CUSTOM, priv->alarm_map);

        for (list = alarms; list != NULL; list = list->next) {
            ECalComponentAlarm *ca;

            ca = e_cal_component_get_alarm (comp, list->data);
            e_alarm_list_append (priv->alarm_list_store, NULL, ca);
            e_cal_component_alarm_free (ca);
        }

        cal_obj_uid_list_free (alarms);
    } else {
        e_dialog_combo_box_set (priv->alarm_time_combo, ALARM_NONE, priv->alarm_map);
    }
    g_signal_handlers_unblock_matched (priv->alarm_time_combo, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    g_signal_handlers_unblock_matched (priv->alarm_list_store, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);

    /* Categories */
    e_cal_component_get_categories (comp, &categories);
    if (categories != NULL)
        gtk_entry_set_text (GTK_ENTRY (priv->categories), categories);
    else
        gtk_entry_set_text (GTK_ENTRY (priv->categories), "");

    /* Source */
    e_source_combo_box_set_active (
        E_SOURCE_COMBO_BOX (priv->source_combo_box),
        e_client_get_source (E_CLIENT (client)));

    e_cal_component_get_uid (comp, &uid);
    if (!(flags & COMP_EDITOR_DELEGATE)
            && !(flags && COMP_EDITOR_NEW_ITEM)) {
        event_page_hide_options (epage);
    }

    sensitize_widgets (epage);

    return validated;
}

static gboolean
event_page_fill_component (CompEditorPage *page,
                           ECalComponent *comp)
{
    CompEditor *editor;
    CompEditorFlags flags;
    ECalClient *client;
    EventPage *epage;
    EventPagePrivate *priv;
    ECalComponentClassification classification;
    ECalComponentDateTime start_date, end_date;
    struct icaltimetype start_tt, end_tt;
    gboolean all_day_event, start_date_set, end_date_set, busy;
    gchar *cat, *str;
    GtkTextBuffer *text_buffer;
    GtkTextIter text_iter_start, text_iter_end;

    epage = EVENT_PAGE (page);
    priv = epage->priv;

    editor = comp_editor_page_get_editor (page);
    client = comp_editor_get_client (editor);
    flags = comp_editor_get_flags (editor);

    text_buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->description));

    comp_editor_copy_new_attendees (comp, priv->comp);

    /* Summary */

    str = gtk_editable_get_chars (GTK_EDITABLE (priv->summary), 0, -1);
    if (str == NULL || *str == '\0')
        e_cal_component_set_summary (comp, NULL);
    else {
        ECalComponentText text;

        text.value = str;
        text.altrep = NULL;

        e_cal_component_set_summary (comp, &text);
    }

    g_free (str);

    /* Location */

    str = gtk_editable_get_chars (GTK_EDITABLE (priv->location), 0, -1);
    if (str == NULL || *str == '\0')
        e_cal_component_set_location (comp, NULL);
    else {
        e_cal_component_set_location (comp, str);
        event_page_save_locations_list (page, comp);
    }

    g_free (str);

    /* Description */

    gtk_text_buffer_get_start_iter (text_buffer, &text_iter_start);
    gtk_text_buffer_get_end_iter   (text_buffer, &text_iter_end);
    str = gtk_text_buffer_get_text (text_buffer, &text_iter_start, &text_iter_end, FALSE);

    if (str == NULL || *str == '\0')
        e_cal_component_set_description_list (comp, NULL);
    else {
        GSList l;
        ECalComponentText text;

        text.value = str;
        text.altrep = NULL;
        l.data = &text;
        l.next = NULL;

        e_cal_component_set_description_list (comp, &l);
    }

    g_free (str);

    /* Dates */

    start_tt = icaltime_null_time ();
    start_date.value = &start_tt;
    start_date.tzid = NULL;

    end_tt = icaltime_null_time ();
    end_date.value = &end_tt;
    end_date.tzid = NULL;

    if (!e_date_edit_date_is_valid (E_DATE_EDIT (priv->start_time))) {
        comp_editor_page_display_validation_error (page, _("Start date is wrong"), priv->start_time);
        return FALSE;
    }
    start_date_set = e_date_edit_get_date (E_DATE_EDIT (priv->start_time),
                           &start_tt.year,
                           &start_tt.month,
                           &start_tt.day);
    g_return_val_if_fail (start_date_set, FALSE);

    if (!e_date_edit_date_is_valid (E_DATE_EDIT (priv->end_time))) {
        comp_editor_page_display_validation_error (page, _("End date is wrong"), priv->end_time);
        return FALSE;
    }
    end_date_set = e_date_edit_get_date (E_DATE_EDIT (priv->end_time),
                         &end_tt.year,
                         &end_tt.month,
                         &end_tt.day);
    g_return_val_if_fail (end_date_set, FALSE);

    /* If the all_day toggle is set, we use DATE values for DTSTART and
     * DTEND. If not, we fetch the hour & minute from the widgets. */
    all_day_event = priv->all_day_event;

    if (all_day_event) {
        start_tt.is_date = TRUE;
        end_tt.is_date = TRUE;

        /* We have to add 1 day to DTEND, as it is not inclusive. */
        icaltime_adjust (&end_tt, 1, 0, 0, 0);
    } else {
        icaltimezone *start_zone;

        if (!e_date_edit_time_is_valid (E_DATE_EDIT (priv->start_time))) {
            comp_editor_page_display_validation_error (page, _("Start time is wrong"), priv->start_time);
            return FALSE;
        }
        e_date_edit_get_time_of_day (E_DATE_EDIT (priv->start_time),
                         &start_tt.hour,
                         &start_tt.minute);
        if (!e_date_edit_time_is_valid (E_DATE_EDIT (priv->end_time))) {
            comp_editor_page_display_validation_error (page, _("End time is wrong"), priv->end_time);
            return FALSE;
        }
        e_date_edit_get_time_of_day (E_DATE_EDIT (priv->end_time),
                         &end_tt.hour,
                         &end_tt.minute);
        start_zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->start_timezone));
        start_date.tzid = icaltimezone_get_tzid (start_zone);
        end_date.tzid = icaltimezone_get_tzid (start_zone);
    }

    e_cal_component_set_dtstart (comp, &start_date);
    e_cal_component_set_dtend (comp, &end_date);

    /* Categories */

    cat = gtk_editable_get_chars (GTK_EDITABLE (priv->categories), 0, -1);
    str = comp_editor_strip_categories (cat);
    g_free (cat);

    e_cal_component_set_categories (comp, str);

    g_free (str);

    /* Classification */
    classification = comp_editor_get_classification (editor);
    e_cal_component_set_classification (comp, classification);

    /* Show Time As (Transparency) */
    busy = priv->show_time_as_busy;
    e_cal_component_set_transparency (comp, busy ? E_CAL_COMPONENT_TRANSP_OPAQUE : E_CAL_COMPONENT_TRANSP_TRANSPARENT);

    /* send options */
    if (priv->sendoptions_shown && priv->sod) {
        icaltimezone *zone = comp_editor_get_timezone (editor);
        e_send_options_utils_fill_component (priv->sod, comp, zone);
    }

    /* Alarm */
    e_cal_component_remove_all_alarms (comp);
    if (e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map) != ALARM_NONE) {
        if (e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map) == ALARM_CUSTOM) {
            GtkTreeModel *model;
            GtkTreeIter iter;
            gboolean valid_iter;

            model = GTK_TREE_MODEL (priv->alarm_list_store);

            for (valid_iter = gtk_tree_model_get_iter_first (model, &iter); valid_iter;
                 valid_iter = gtk_tree_model_iter_next (model, &iter)) {
                ECalComponentAlarm *alarm, *alarm_copy;
                icalcomponent *icalcomp;
                icalproperty *icalprop;

                alarm = (ECalComponentAlarm *) e_alarm_list_get_alarm (priv->alarm_list_store, &iter);
                if (!alarm) {
                    g_warning ("alarm is NULL\n");
                    continue;
                }

                /* We set the description of the alarm if it's got
                 * the X-EVOLUTION-NEEDS-DESCRIPTION property.
                 */
                icalcomp = e_cal_component_alarm_get_icalcomponent (alarm);
                icalprop = icalcomponent_get_first_property (icalcomp, ICAL_X_PROPERTY);
                while (icalprop) {
                    const gchar *x_name;
                    ECalComponentText summary;

                    x_name = icalproperty_get_x_name (icalprop);
                    if (!strcmp (x_name, "X-EVOLUTION-NEEDS-DESCRIPTION")) {
                        e_cal_component_get_summary (comp, &summary);
                        e_cal_component_alarm_set_description (alarm, &summary);

                        icalcomponent_remove_property (icalcomp, icalprop);
                        break;
                    }

                    icalprop = icalcomponent_get_next_property (icalcomp, ICAL_X_PROPERTY);
                }

                /* We clone the alarm to maintain the invariant that the alarm
                 * structures in the list did *not* come from the component.
                 */

                alarm_copy = e_cal_component_alarm_clone (alarm);
                e_cal_component_add_alarm (comp, alarm_copy);
                e_cal_component_alarm_free (alarm_copy);
            }
        } else {
            ECalComponentAlarm *ca;
            ECalComponentText summary;
            ECalComponentAlarmTrigger trigger;
            gint alarm_type;

            ca = e_cal_component_alarm_new ();

            e_cal_component_get_summary (comp, &summary);

            if (summary.value)
                e_cal_component_alarm_set_description (ca, &summary);

            e_cal_component_alarm_set_action (ca, E_CAL_COMPONENT_ALARM_DISPLAY);

            memset (&trigger, 0, sizeof (ECalComponentAlarmTrigger));
            trigger.type = E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_START;
            trigger.u.rel_duration.is_neg = 1;

            alarm_type = e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map);
            switch (alarm_type) {
            case ALARM_15_MINUTES:
                trigger.u.rel_duration.minutes = 15;
                break;

            case ALARM_1_HOUR:
                trigger.u.rel_duration.hours = 1;
                break;

            case ALARM_1_DAY:
                trigger.u.rel_duration.days = 1;
                break;

            case ALARM_USER_TIME:
                switch (e_meeting_store_get_default_reminder_units (priv->meeting_store)) {
                case E_DURATION_DAYS:
                    trigger.u.rel_duration.days = priv->alarm_interval;
                    break;

                case E_DURATION_HOURS:
                    trigger.u.rel_duration.hours = priv->alarm_interval;
                    break;

                case E_DURATION_MINUTES:
                    trigger.u.rel_duration.minutes = priv->alarm_interval;
                    break;
                }
                break;

            default:
                break;
            }
            e_cal_component_alarm_set_trigger (ca, trigger);

            e_cal_component_add_alarm (comp, ca);
            e_cal_component_alarm_free (ca);
        }
    }

    if (priv->is_meeting) {
        ECalComponentOrganizer organizer = {NULL, NULL, NULL, NULL};

        if (!priv->existing) {
            gchar *backend_addr = NULL;
            gchar *backend_mailto = NULL;
            gchar *name;
            gchar *mailto;

            e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);

            /* Find the identity for the organizer or sentby field */
            if (!get_current_identity (epage, &name, &mailto)) {
                e_notice (
                    priv->main, GTK_MESSAGE_ERROR,
                    _("An organizer is required."));
                return FALSE;
            }

            /* Prefer the backend address if we have one. */
            if (backend_addr != NULL && *backend_addr != '\0') {
                backend_mailto = g_strdup_printf (
                    "MAILTO:%s", backend_addr);
                if (g_ascii_strcasecmp (backend_mailto, mailto) == 0) {
                    g_free (backend_mailto);
                    backend_mailto = NULL;
                }
            }

            if (backend_mailto == NULL) {
                organizer.cn = name;
                organizer.value = mailto;
                name = mailto = NULL;
            } else {
                organizer.value = backend_mailto;
                organizer.sentby = mailto;
                backend_mailto = mailto = NULL;
            }

            e_cal_component_set_organizer (comp, &organizer);

            g_free (backend_addr);
            g_free (backend_mailto);
            g_free (name);
            g_free (mailto);
        }

        if (e_meeting_store_count_actual_attendees (priv->meeting_store) < 1) {
            e_notice (priv->main, GTK_MESSAGE_ERROR,
                    _("At least one attendee is required."));
            return FALSE;
        }

        if (flags & COMP_EDITOR_DELEGATE) {
            GSList *attendee_list, *l;
            gint i;
            const GPtrArray *attendees = e_meeting_store_get_attendees (priv->meeting_store);

            e_cal_component_get_attendee_list (priv->comp, &attendee_list);

            for (i = 0; i < attendees->len; i++) {
                EMeetingAttendee *ia = g_ptr_array_index (attendees, i);
                ECalComponentAttendee *ca;

                /* Remove the duplicate user from the component if present */
                if (e_meeting_attendee_is_set_delfrom (ia) || e_meeting_attendee_is_set_delto (ia)) {
                    for (l = attendee_list; l; l = l->next) {
                        ECalComponentAttendee *a = l->data;

                        if (g_str_equal (a->value, e_meeting_attendee_get_address (ia))) {
                            attendee_list = g_slist_remove (attendee_list, l->data);
                            break;
                        }
                    }
                }

                ca = e_meeting_attendee_as_e_cal_component_attendee (ia);

                attendee_list = g_slist_append (attendee_list, ca);
            }
            e_cal_component_set_attendee_list (comp, attendee_list);
            e_cal_component_free_attendee_list (attendee_list);
        } else
            set_attendees (comp, e_meeting_store_get_attendees (priv->meeting_store));
    }

    return TRUE;
}

static gboolean
event_page_fill_timezones (CompEditorPage *page,
                           GHashTable *timezones)
{
    EventPage *epage;
    EventPagePrivate *priv;
    icaltimezone *zone;

    epage = EVENT_PAGE (page);
    priv = epage->priv;

    /* add start date timezone */
    zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->start_timezone));
    if (zone) {
        if (!g_hash_table_lookup (timezones, icaltimezone_get_tzid (zone)))
            g_hash_table_insert (timezones, (gpointer) icaltimezone_get_tzid (zone), zone);
    }

    /* add end date timezone */
    zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->end_timezone));
    if (zone) {
        if (!g_hash_table_lookup (timezones, icaltimezone_get_tzid (zone)))
            g_hash_table_insert (timezones, (gpointer) icaltimezone_get_tzid (zone), zone);
    }

    return TRUE;
}

static void
event_page_set_dates (CompEditorPage *page,
                      CompEditorPageDates *dates)
{
    update_time (EVENT_PAGE (page), dates->start, dates->end);
}

static void
event_page_add_attendee (CompEditorPage *page,
                         EMeetingAttendee *attendee)
{
    CompEditor *editor;
    EventPagePrivate *priv;

    priv = EVENT_PAGE_GET_PRIVATE (page);
    editor = comp_editor_page_get_editor (page);

    if ((comp_editor_get_flags (editor) & COMP_EDITOR_DELEGATE) != 0) {
        gchar *delfrom;

        /* EMeetingAttendee takes ownership of the string. */
        delfrom = g_strdup_printf ("MAILTO:%s", priv->user_add);
        e_meeting_attendee_set_delfrom (attendee, delfrom);
    }

    e_meeting_store_add_attendee (priv->meeting_store, attendee);
    e_meeting_list_view_add_attendee_to_name_selector (
        E_MEETING_LIST_VIEW (priv->list_view), attendee);
}

static void
event_page_class_init (EventPageClass *class)
{
    GObjectClass *object_class;
    CompEditorPageClass *editor_page_class;

    g_type_class_add_private (class, sizeof (EventPagePrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->dispose = event_page_dispose;
    object_class->finalize = event_page_finalize;

    editor_page_class = COMP_EDITOR_PAGE_CLASS (class);
    editor_page_class->get_widget = event_page_get_widget;
    editor_page_class->focus_main_widget = event_page_focus_main_widget;
    editor_page_class->fill_widgets = event_page_fill_widgets;
    editor_page_class->fill_component = event_page_fill_component;
    editor_page_class->fill_timezones = event_page_fill_timezones;
    editor_page_class->set_dates = event_page_set_dates;
    editor_page_class->add_attendee = event_page_add_attendee;
}

static void
event_page_init (EventPage *epage)
{
    epage->priv = EVENT_PAGE_GET_PRIVATE (epage);
    epage->priv->deleted_attendees = g_ptr_array_new ();
    epage->priv->alarm_interval = -1;
    epage->priv->alarm_map = alarm_map_with_user_time;
    epage->priv->location_completion = gtk_entry_completion_new ();
    epage->priv->open_cancellable = NULL;
}

void
event_page_set_view_role (EventPage *epage,
                          gboolean state)
{
    e_meeting_list_view_column_set_visible (
        epage->priv->list_view, E_MEETING_STORE_ROLE_COL, state);
}

void
event_page_set_view_status (EventPage *epage,
                            gboolean state)
{
    e_meeting_list_view_column_set_visible (
        epage->priv->list_view, E_MEETING_STORE_STATUS_COL, state);
}

void
event_page_set_view_type (EventPage *epage,
                          gboolean state)
{
    e_meeting_list_view_column_set_visible (
        epage->priv->list_view, E_MEETING_STORE_TYPE_COL, state);
}

void
event_page_set_view_rsvp (EventPage *epage,
                          gboolean state)
{
    e_meeting_list_view_column_set_visible (
        epage->priv->list_view, E_MEETING_STORE_RSVP_COL, state);
}

void
event_page_hide_options (EventPage *page)
{
    CompEditor *editor;
    GtkAction *action;

    g_return_if_fail (IS_EVENT_PAGE (page));

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (page));
    action = comp_editor_get_action (editor, "send-options");
    gtk_action_set_visible (action, FALSE);
}

void
event_page_show_options (EventPage *page)
{
    CompEditor *editor;
    GtkAction *action;

    g_return_if_fail (IS_EVENT_PAGE (page));

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (page));
    action = comp_editor_get_action (editor, "send-options");
    gtk_action_set_visible (action, TRUE);
}

void
event_page_set_meeting (EventPage *page,
                        gboolean set)
{
    g_return_if_fail (IS_EVENT_PAGE (page));

    page->priv->is_meeting = set;
    if (page->priv->comp)
        sensitize_widgets (page);
}

void
event_page_set_delegate (EventPage *page,
                         gboolean set)
{
    g_return_if_fail (IS_EVENT_PAGE (page));

    if (set)
        gtk_label_set_text_with_mnemonic ((GtkLabel *)page->priv->attendees_label, _("_Delegatees"));
    else
        gtk_label_set_text_with_mnemonic ((GtkLabel *)page->priv->attendees_label, _("Atte_ndees"));
}

static void
time_sel_changed (GtkComboBox *combo,
                  EventPage *epage)
{
    EventPagePrivate *priv;
    gint selection = gtk_combo_box_get_active (combo);

    priv = epage->priv;

    if (selection == 1) {
        gtk_widget_hide (priv->time_hour);
        gtk_widget_show (priv->end_time);
        hour_sel_changed (GTK_SPIN_BUTTON (priv->hour_selector), epage);
        minute_sel_changed (GTK_SPIN_BUTTON (priv->minute_selector), epage);
    } else if (!selection) {
        gtk_widget_show (priv->time_hour);
        gtk_widget_hide (priv->end_time);

        update_end_time_combo ( epage);
    }
}

static
void update_end_time_combo (EventPage *epage)
{
    EventPagePrivate *priv;
    struct icaltimetype start_tt = icaltime_null_time ();
    struct icaltimetype end_tt = icaltime_null_time ();
    time_t start_timet,end_timet;
    gint hours,minutes;

    priv = epage->priv;

    e_date_edit_get_date (E_DATE_EDIT (priv->start_time),
                 &start_tt.year,
                 &start_tt.month,
                 &start_tt.day);
    e_date_edit_get_time_of_day (E_DATE_EDIT (priv->start_time),
                     &start_tt.hour,
                     &start_tt.minute);
    e_date_edit_get_date (E_DATE_EDIT (priv->end_time),
                 &end_tt.year,
                 &end_tt.month,
                 &end_tt.day);
    e_date_edit_get_time_of_day (E_DATE_EDIT (priv->end_time),
                     &end_tt.hour,
                     &end_tt.minute);

    end_timet = icaltime_as_timet (end_tt);
    start_timet = icaltime_as_timet (start_tt);

    end_timet -= start_timet;
    hours = end_timet / ( 60 * 60 );
    minutes = (end_timet / 60) - ( hours * 60 );

    gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->hour_selector), hours);
    gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->minute_selector), minutes);
}

static void
hour_sel_changed (GtkSpinButton *widget,
                  EventPage *epage)
{
    hour_minute_changed (epage);
}

static void
minute_sel_changed (GtkSpinButton *widget,
                    EventPage *epage)
{
    hour_minute_changed (epage);
}

static gboolean
minute_sel_focus_out (GtkSpinButton *widget,
                      GdkEvent *event,
                      EventPage *epage)
{
    const gchar *text;
    gint hours, minutes;

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (epage != NULL, FALSE);

    text = gtk_entry_get_text (GTK_ENTRY (widget));
    minutes = g_strtod (text, NULL);

    if (minutes >= 60) {
        hours = minutes / 60;
        minutes = minutes % 60;

        gtk_spin_button_set_value (GTK_SPIN_BUTTON (epage->priv->hour_selector), hours);
        gtk_spin_button_set_value (GTK_SPIN_BUTTON (epage->priv->minute_selector), minutes);
    }

    return FALSE;
}

static void
hour_minute_changed (EventPage *epage)
{
    EventPagePrivate *priv;
    gint for_hours, for_minutes;
    struct icaltimetype end_tt = icaltime_null_time ();

    priv = epage->priv;

    e_date_edit_get_date (E_DATE_EDIT (priv->start_time),
                  &end_tt.year,
                  &end_tt.month,
                  &end_tt.day);
    e_date_edit_get_time_of_day (E_DATE_EDIT (priv->start_time),
                     &end_tt.hour,
                     &end_tt.minute);

    for_hours = gtk_spin_button_get_value (GTK_SPIN_BUTTON (priv->hour_selector));
    for_minutes = gtk_spin_button_get_value (GTK_SPIN_BUTTON (priv->minute_selector));

    icaltime_adjust (&end_tt, 0, for_hours, for_minutes, 0);

    e_date_edit_set_date_and_time_of_day (E_DATE_EDIT (priv->end_time),
                          end_tt.year,
                          end_tt.month,
                          end_tt.day,
                          end_tt.hour,
                          end_tt.minute);
}

static void
edit_clicked_cb (GtkButton *btn,
                 EventPage *epage)
{
    EventPagePrivate *priv;
    GtkTreePath *path = NULL;
    GtkTreeViewColumn *focus_col;

    priv = epage->priv;

    gtk_tree_view_get_cursor (
        GTK_TREE_VIEW (priv->list_view), &path, NULL);
    g_return_if_fail (path != NULL);

    gtk_tree_view_get_cursor (
        GTK_TREE_VIEW (priv->list_view), &path, &focus_col);
    gtk_tree_view_set_cursor (
        GTK_TREE_VIEW (priv->list_view), path, focus_col, TRUE);
    gtk_tree_path_free (path);
}

static void
add_clicked_cb (GtkButton *btn,
                EventPage *epage)
{
    CompEditor *editor;
    CompEditorFlags flags;
    EMeetingAttendee *attendee;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    flags = comp_editor_get_flags (editor);

    attendee = e_meeting_store_add_attendee_with_defaults (epage->priv->meeting_store);

    if (flags & COMP_EDITOR_DELEGATE) {
        e_meeting_attendee_set_delfrom (attendee, g_strdup_printf ("MAILTO:%s", epage->priv->user_add));
    }

    e_meeting_list_view_edit (epage->priv->list_view, attendee);
}

static gboolean
existing_attendee (EMeetingAttendee *ia,
                   ECalComponent *comp)
{
    GSList *attendees, *l;
    const gchar *ia_address;
    const gchar *ia_sentby = NULL;

    ia_address = itip_strip_mailto (e_meeting_attendee_get_address (ia));
    if (!ia_address)
        return FALSE;

    if (e_meeting_attendee_is_set_sentby (ia))
        ia_sentby = itip_strip_mailto (e_meeting_attendee_get_sentby (ia));

    e_cal_component_get_attendee_list (comp, &attendees);

    for (l = attendees; l; l = l->next) {
        ECalComponentAttendee *attendee = l->data;
        const gchar *address;
        const gchar *sentby = NULL;

        address = itip_strip_mailto (attendee->value);
        if (attendee->sentby)
            sentby = itip_strip_mailto (attendee->sentby);

        if ((address && !g_ascii_strcasecmp (ia_address, address)) || (sentby && ia_sentby&& !g_ascii_strcasecmp (ia_sentby, sentby))) {
            e_cal_component_free_attendee_list (attendees);
            return TRUE;
        }
    }

    e_cal_component_free_attendee_list (attendees);

    return FALSE;
}

static void
remove_attendee (EventPage *epage,
                 EMeetingAttendee *ia)
{
    EventPagePrivate *priv = epage->priv;
    CompEditor *editor;
    CompEditorFlags flags;
    gint pos = 0;
    gboolean delegate;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    flags = comp_editor_get_flags (editor);

    delegate = (flags & COMP_EDITOR_DELEGATE);

    /* If the user deletes the organizer attendee explicitly,
     * assume they no longer want the organizer showing up */
    if (ia == priv->ia) {
        g_object_unref (priv->ia);
        priv->ia = NULL;
    }

    /* If this was a delegatee, no longer delegate */
    if (e_meeting_attendee_is_set_delfrom (ia)) {
        EMeetingAttendee *ib;

        ib = e_meeting_store_find_attendee (priv->meeting_store, e_meeting_attendee_get_delfrom (ia), &pos);
        if (ib != NULL) {
            e_meeting_attendee_set_delto (ib, NULL);

            if (!delegate)
                e_meeting_attendee_set_edit_level (ib,  E_MEETING_ATTENDEE_EDIT_FULL);
        }
    }

    /* Handle deleting all attendees in the delegation chain */
    while (ia != NULL) {
        EMeetingAttendee *ib = NULL;

        /* do not add to deleted_attendees if user removed new attendee */
        if (existing_attendee (ia, priv->comp) && !comp_editor_have_in_new_attendees (priv->comp, ia)) {
            g_object_ref (ia);
            g_ptr_array_add (priv->deleted_attendees, ia);
        }

        if (e_meeting_attendee_get_delto (ia) != NULL)
            ib = e_meeting_store_find_attendee (priv->meeting_store, e_meeting_attendee_get_delto (ia), NULL);

        comp_editor_manage_new_attendees (priv->comp, ia, FALSE);
        e_meeting_list_view_remove_attendee_from_name_selector (priv->list_view, ia);
        e_meeting_store_remove_attendee (priv->meeting_store, ia);

        ia = ib;
    }

    sensitize_widgets (epage);
}

static void
remove_clicked_cb (GtkButton *btn,
                   EventPage *epage)
{
    EventPagePrivate *priv;
    EMeetingAttendee *ia;
    GtkTreeSelection *selection;
    GList *paths = NULL, *tmp;
    GtkTreeIter iter;
    GtkTreePath *path = NULL;
    GtkTreeModel *model = NULL;
    gboolean valid_iter;
    gchar *address;

    priv = epage->priv;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->list_view));
    model = GTK_TREE_MODEL (priv->meeting_store);
    if (!(paths = gtk_tree_selection_get_selected_rows (selection, &model ))) {
        g_warning ("Could not get a selection to delete.");
        return;
    }
    paths = g_list_reverse (paths);

    for (tmp = paths; tmp; tmp = tmp->next) {
        path = tmp->data;

        gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->meeting_store), &iter, path);

        gtk_tree_model_get (GTK_TREE_MODEL (priv->meeting_store), &iter, E_MEETING_STORE_ADDRESS_COL, &address, -1);
        ia = e_meeting_store_find_attendee (priv->meeting_store, address, NULL);
        g_free (address);
        if (!ia) {
            g_warning ("Cannot delete attendee\n");
            continue;
        } else if (e_meeting_attendee_get_edit_level (ia) != E_MEETING_ATTENDEE_EDIT_FULL) {
            g_warning("Not enough rights to delete attendee: %s\n", e_meeting_attendee_get_address(ia));
            continue;
        }

        remove_attendee (epage, ia);
    }

    /* Select closest item after removal */
    valid_iter = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->meeting_store), &iter, path);
    if (!valid_iter) {
        gtk_tree_path_prev (path);
        valid_iter = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->meeting_store), &iter, path);
    }

    if (valid_iter) {
        gtk_tree_selection_unselect_all (selection);
        gtk_tree_selection_select_iter (selection, &iter);
    }

    g_list_foreach (paths, (GFunc) gtk_tree_path_free, NULL);
    g_list_free (paths);
}

static void
invite_cb (GtkWidget *widget,
           EventPage *page)
{
    e_meeting_list_view_invite_others_dialog (page->priv->list_view);
}

static void
attendee_added_cb (EMeetingListView *emlv,
                   EMeetingAttendee *ia,
                   EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;
    CompEditor *editor;
    CompEditorFlags flags;
    ECalClient *client;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    client = comp_editor_get_client (editor);
    flags = comp_editor_get_flags (editor);

    if (!(flags & COMP_EDITOR_DELEGATE)) {
        comp_editor_manage_new_attendees (priv->comp, ia, TRUE);
        return;
    }

    /* do not remove here, it did EMeetingListView already */
    e_meeting_attendee_set_delfrom (ia, g_strdup_printf ("MAILTO:%s", priv->user_add ? priv->user_add : ""));

    if (!e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY)) {
        EMeetingAttendee *delegator;

        gtk_widget_set_sensitive (priv->invite, FALSE);
        gtk_widget_set_sensitive (priv->add, FALSE);
        gtk_widget_set_sensitive (priv->edit, FALSE);

        delegator = e_meeting_store_find_attendee (priv->meeting_store, priv->user_add, NULL);
        g_return_if_fail (delegator != NULL);

        e_meeting_attendee_set_delto (delegator, g_strdup (e_meeting_attendee_get_address (ia)));
    }
}

static gboolean
list_view_event (EMeetingListView *list_view,
                 GdkEvent *event,
                 EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;
    CompEditor *editor;
    CompEditorFlags flags;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    flags = comp_editor_get_flags (editor);

    if (event->type == GDK_2BUTTON_PRESS && flags & COMP_EDITOR_USER_ORG) {
        EMeetingAttendee *attendee;

        attendee = e_meeting_store_add_attendee_with_defaults (priv->meeting_store);

        if (flags & COMP_EDITOR_DELEGATE) {
            e_meeting_attendee_set_delfrom (attendee, g_strdup_printf ("MAILTO:%s", epage->priv->user_add));
        }

        e_meeting_list_view_edit (epage->priv->list_view, attendee);
        return TRUE;
    }

    return FALSE;
}

static gboolean
list_key_press (EMeetingListView *list_view,
                GdkEventKey *event,
                EventPage *epage)
{
    if (event->keyval == GDK_KEY_Delete) {

        remove_clicked_cb (NULL, epage);

        return TRUE;
    } else if (event->keyval == GDK_KEY_Insert) {
        add_clicked_cb (NULL, epage);

        return TRUE;
    }

    return FALSE;
}

void
event_page_set_all_day_event (EventPage *epage,
                              gboolean all_day)
{
    EventPagePrivate *priv = epage->priv;
    struct icaltimetype start_tt = icaltime_null_time ();
    struct icaltimetype end_tt = icaltime_null_time ();
    CompEditor *editor;
    GtkAction *action;
    gboolean date_set;
    gboolean active;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));

    epage->priv->all_day_event = all_day;
    e_date_edit_set_show_time (E_DATE_EDIT (priv->start_time), !all_day);
    e_date_edit_set_show_time (E_DATE_EDIT (priv->end_time), !all_day);

    date_set = e_date_edit_get_date (E_DATE_EDIT (priv->start_time),
                     &start_tt.year,
                     &start_tt.month,
                     &start_tt.day);
    e_date_edit_get_time_of_day (E_DATE_EDIT (priv->start_time),
                     &start_tt.hour,
                     &start_tt.minute);
    g_return_if_fail (date_set);

    date_set = e_date_edit_get_date (E_DATE_EDIT (priv->end_time),
                     &end_tt.year,
                     &end_tt.month,
                     &end_tt.day);
    e_date_edit_get_time_of_day (E_DATE_EDIT (priv->end_time),
                     &end_tt.hour,
                     &end_tt.minute);
    g_return_if_fail (date_set);

    /* TODO implement the for portion in end time selector */
    gtk_widget_set_sensitive (priv->end_time_combo, !all_day);
    if (all_day)
        gtk_combo_box_set_active (GTK_COMBO_BOX (priv->end_time_combo), 1);
    else
        gtk_combo_box_set_active (GTK_COMBO_BOX (priv->end_time_combo), 0);

    action = comp_editor_get_action (editor, "view-time-zone");
    gtk_action_set_sensitive (action, !all_day);

    if (all_day) {
        /* Round down to the start of the day. */
        start_tt.hour = 0;
        start_tt.minute  = 0;
        start_tt.second  = 0;
        start_tt.is_date = TRUE;

        /* Round down to the start of the day, or the start of the
         * previous day if it is midnight. */
        icaltime_adjust (&end_tt, 0, 0, 0, -1);
        end_tt.hour = 0;
        end_tt.minute  = 0;
        end_tt.second  = 0;
        end_tt.is_date = TRUE;
    } else {
        icaltimezone *start_zone;

        if (end_tt.year == start_tt.year
            && end_tt.month == start_tt.month
            && end_tt.day == start_tt.day) {
            /* The event is within one day, so we set the event
             * start to the start of the working day, and the end
             * to one hour later. */
            start_tt.hour =
                comp_editor_get_work_day_start_hour (editor);
            start_tt.minute =
                comp_editor_get_work_day_start_minute (editor);
            start_tt.second  = 0;

            end_tt = start_tt;
            icaltime_adjust (&end_tt, 0, 1, 0, 0);
        } else {
            /* The event is longer than 1 day, so we keep exactly
             * the same times, just using DATE-TIME rather than
             * DATE. */
            icaltime_adjust (&end_tt, 1, 0, 0, 0);
        }

        /* Make sure that end > start using the timezones. */
        start_zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->start_timezone));
        check_start_before_end (&start_tt, start_zone,
                    &end_tt, start_zone,
                    TRUE);
    }

    action = comp_editor_get_action (editor, "view-time-zone");
    active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    event_page_set_show_timezone (epage, active & !all_day);

    g_signal_handlers_block_matched (priv->start_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    g_signal_handlers_block_matched (priv->end_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);

    e_date_edit_set_date (E_DATE_EDIT (priv->start_time), start_tt.year,
                  start_tt.month, start_tt.day);
    e_date_edit_set_time_of_day (E_DATE_EDIT (priv->start_time),
                     start_tt.hour, start_tt.minute);

    e_date_edit_set_date (E_DATE_EDIT (priv->end_time), end_tt.year,
                  end_tt.month, end_tt.day);
    e_date_edit_set_time_of_day (E_DATE_EDIT (priv->end_time),
                     end_tt.hour, end_tt.minute);

    g_signal_handlers_unblock_matched (priv->start_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    g_signal_handlers_unblock_matched (priv->end_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);

    /* Notify upstream */
    notify_dates_changed (epage, &start_tt, &end_tt);

    comp_editor_page_changed (COMP_EDITOR_PAGE (epage));
}

void
event_page_set_show_time_busy (EventPage *epage,
                               gboolean state)
{
    epage->priv->show_time_as_busy = state;
    comp_editor_page_changed (COMP_EDITOR_PAGE (epage));
}

void
event_page_show_alarm (EventPage *epage)
{
    gtk_widget_show (epage->priv->alarm_dialog);
}

void
event_page_set_show_timezone (EventPage *epage,
                              gboolean state)
{
    if (state) {
        gtk_widget_show_all (epage->priv->start_timezone);
        gtk_widget_show (epage->priv->timezone_label);
    } else {
        gtk_widget_hide (epage->priv->start_timezone);
        gtk_widget_hide (epage->priv->timezone_label);
    }

}

void
event_page_set_show_categories (EventPage *epage,
                                gboolean state)
{
    if (state) {
        gtk_widget_show (epage->priv->categories_btn);
        gtk_widget_show (epage->priv->categories);
    } else {
        gtk_widget_hide (epage->priv->categories_btn);
        gtk_widget_hide (epage->priv->categories);
    }
}

/*If the msg has some value set, the icon should always be set */
void
event_page_set_info_string (EventPage *epage,
                            const gchar *icon,
                            const gchar *msg)
{
    EventPagePrivate *priv;

    priv = epage->priv;

    gtk_image_set_from_stock (GTK_IMAGE (priv->info_icon), icon, GTK_ICON_SIZE_BUTTON);
    gtk_label_set_markup (GTK_LABEL (priv->info_string), msg);

    if (msg && icon)
        gtk_widget_show (priv->info_hbox);
    else
        gtk_widget_hide (priv->info_hbox);
}

/* Gets the widgets from the XML file and returns if they are all available. */
static gboolean
get_widgets (EventPage *epage)
{
    EShell *shell;
    ESourceRegistry *registry;
    CompEditor *editor;
    CompEditorPage *page = COMP_EDITOR_PAGE (epage);
    GtkEntryCompletion *completion;
    EventPagePrivate *priv;
    GSList *accel_groups;
    GtkAction *action;
    GtkWidget *parent;
    GtkWidget *toplevel;
    GtkWidget *sw;

    priv = epage->priv;

#define GW(name) e_builder_get_widget (priv->builder, name)

    editor = comp_editor_page_get_editor (page);
    shell = comp_editor_get_shell (editor);
    registry = e_shell_get_registry (shell);

    priv->main = GW ("event-page");
    if (!priv->main)
        return FALSE;

    /* Get the GtkAccelGroup from the toplevel window, so we can install
     * it when the notebook page is mapped. */
    toplevel = gtk_widget_get_toplevel (priv->main);
    accel_groups = gtk_accel_groups_from_object (G_OBJECT (toplevel));
    if (accel_groups)
        page->accel_group = g_object_ref (accel_groups->data);
    priv->alarm_dialog = GW ("alarm-dialog");
    priv->alarm_box = GW ("custom_box");
    priv->alarm_time_combo = GW ("alarm-time-combobox");

    priv->timezone_label = GW ("timezone-label");
    priv->start_timezone = GW ("start-timezone");
    priv->end_timezone = priv->start_timezone;
    priv->status_icons = GW ("status-icons");

    gtk_widget_show (priv->status_icons);

    action = comp_editor_get_action (editor, "view-time-zone");
    if (!gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action))) {
        gtk_widget_hide (priv->timezone_label);
        gtk_widget_hide (priv->start_timezone);
    } else {
        gtk_widget_show (priv->timezone_label);
        gtk_widget_show_all (priv->start_timezone);
    }
    priv->attendees_label = GW ("attendees-label");

    g_object_ref (priv->main);
    parent = gtk_widget_get_parent (priv->main);
    gtk_container_remove (GTK_CONTAINER (parent), priv->main);

    priv->categories = GW ("categories");
    priv->categories_btn = GW ("categories-button");

    priv->organizer = GW ("organizer");
    gtk_list_store_clear (GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (priv->organizer))));
    gtk_combo_box_set_entry_text_column (GTK_COMBO_BOX (priv->organizer), 0);

    priv->summary = GW ("summary");
    priv->summary_label = GW ("summary-label");
    priv->location = GW ("location");
    priv->location_label = GW ("location-label");

    priv->info_hbox = GW ("generic-info");
    priv->info_icon = GW ("generic-info-image");
    priv->info_string = GW ("generic-info-msgs");

    priv->invite = GW ("invite");
    priv->invite_label = GW ("invite-label");
    if (e_shell_get_express_mode (shell))
        gtk_widget_hide (priv->invite);
    else
        gtk_widget_hide (priv->invite_label);

    priv->add = GW ("add-attendee");
    priv->remove = GW ("remove-attendee");
    priv->edit = GW ("edit-attendee");
    priv->list_box = GW ("list-box");

    priv->calendar_label = GW ("calendar-label");
    priv->attendee_box = GW ("attendee-box");
    priv->org_cal_label = GW ("org-cal-label");

    priv->list_view = e_meeting_list_view_new (priv->meeting_store);

    sw = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
    gtk_widget_show (sw);
    gtk_container_add (GTK_CONTAINER (sw), GTK_WIDGET (priv->list_view));
    gtk_box_pack_start (GTK_BOX (priv->list_box), sw, TRUE, TRUE, 0);

    /* Glade's visibility flag doesn't seem to work for custom widgets */
    priv->start_time = GW ("start-time");
    gtk_widget_show (priv->start_time);

    priv->time_hour = GW ("time-hour");
    priv->hour_selector = GW ("hour_selector");
    priv->minute_selector = GW ("minute_selector");
    priv->end_time_combo = GW ("end-time-combobox");

    priv->end_time = GW ("end-time");
    gtk_widget_show_all (priv->time_hour);
    gtk_widget_hide (priv->end_time);

    priv->description = GW ("description");

    priv->source_combo_box = GW ("source");
    e_source_combo_box_set_registry (
        E_SOURCE_COMBO_BOX (priv->source_combo_box), registry);

    completion = e_category_completion_new ();
    gtk_entry_set_completion (GTK_ENTRY (priv->categories), completion);
    g_object_unref (completion);

    if (priv->summary) {
        EShellSettings *shell_settings;

        shell_settings = e_shell_get_shell_settings (shell);

        g_object_bind_property (
            shell_settings, "composer-inline-spelling",
            priv->summary, "checking-enabled",
            G_BINDING_SYNC_CREATE);
    }

    return (priv->summary
        && priv->location
        && priv->start_time
        && priv->end_time
        && priv->description );
}

static void
summary_changed_cb (GtkEntry *entry,
                    CompEditorPage *page)
{
    CompEditor *editor;
    const gchar *text;

    if (comp_editor_page_get_updating (page))
        return;

    editor = comp_editor_page_get_editor (page);
    text = gtk_entry_get_text (entry);
    comp_editor_set_summary (editor, text);
}

/* Note that this assumes that the start_tt and end_tt passed to it are the
 * dates visible to the user. For DATE values, we have to add 1 day to the
 * end_tt before emitting the signal. */
static void
notify_dates_changed (EventPage *epage,
                      struct icaltimetype *start_tt,
                      struct icaltimetype *end_tt)
{
    EventPagePrivate *priv;
    CompEditorPageDates dates;
    ECalComponentDateTime start_dt, end_dt;
    gboolean all_day_event;
    icaltimezone *start_zone = NULL;
    priv = epage->priv;

    all_day_event = priv->all_day_event;

    start_dt.value = start_tt;
    end_dt.value = end_tt;

    if (all_day_event) {
        /* The actual DTEND is 1 day after the displayed date for
         * DATE values. */
        icaltime_adjust (end_tt, 1, 0, 0, 0);
    } else {
        start_zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->start_timezone));
    }

    start_dt.tzid = start_zone ? icaltimezone_get_tzid (start_zone) : NULL;
    end_dt.tzid = start_zone ? icaltimezone_get_tzid (start_zone) : NULL;

    dates.start = &start_dt;
    dates.end = &end_dt;

    dates.due = NULL;
    dates.complete = NULL;

    comp_editor_page_notify_dates_changed (COMP_EDITOR_PAGE (epage),
                           &dates);

    check_starts_in_the_past (epage);
}

static gboolean
check_start_before_end (struct icaltimetype *start_tt,
                        icaltimezone *start_zone,
                        struct icaltimetype *end_tt,
                        icaltimezone *end_zone,
                        gboolean adjust_end_time)
{
    struct icaltimetype end_tt_copy;
    gint cmp;

    /* Convert the end time to the same timezone as the start time. */
    end_tt_copy = *end_tt;
    icaltimezone_convert_time (&end_tt_copy, end_zone, start_zone);

    /* Now check if the start time is after the end time. If it is,
     * we need to modify one of the times. */
    cmp = icaltime_compare (*start_tt, end_tt_copy);
    if (cmp > 0) {
        if (adjust_end_time) {
            /* Modify the end time, to be the start + 1 hour. */
            *end_tt = *start_tt;
            icaltime_adjust (end_tt, 0, 1, 0, 0);
            icaltimezone_convert_time (end_tt, start_zone,
                           end_zone);
        } else {
            /* Modify the start time, to be the end - 1 hour. */
            *start_tt = *end_tt;
            icaltime_adjust (start_tt, 0, -1, 0, 0);
            icaltimezone_convert_time (start_tt, end_zone,
                           start_zone);
        }
        return TRUE;
    }

    return FALSE;
}

/*
 * This is called whenever the start or end dates or timezones is changed.
 * It makes sure that the start date < end date. It also emits the notification
 * signals so the other event editor pages update their labels etc.
 *
 * If adjust_end_time is TRUE, if the start time < end time it will adjust
 * the end time. If FALSE it will adjust the start time. If the user sets the
 * start or end time, the other time is adjusted to make it valid.
 */
static void
times_updated (EventPage *epage,
               gboolean adjust_end_time)
{
    EventPagePrivate *priv;
    struct icaltimetype start_tt = icaltime_null_time ();
    struct icaltimetype end_tt = icaltime_null_time ();
    gboolean date_set, all_day_event;
    gboolean set_start_date = FALSE, set_end_date = FALSE;
    icaltimezone *start_zone;

    priv = epage->priv;

    if (comp_editor_page_get_updating (COMP_EDITOR_PAGE (epage)))
        return;

    /* Fetch the start and end times and timezones from the widgets. */
    all_day_event = priv->all_day_event;

    date_set = e_date_edit_get_date (E_DATE_EDIT (priv->start_time),
                     &start_tt.year,
                     &start_tt.month,
                     &start_tt.day);
    g_return_if_fail (date_set);

    date_set = e_date_edit_get_date (E_DATE_EDIT (priv->end_time),
                     &end_tt.year,
                     &end_tt.month,
                     &end_tt.day);
    g_return_if_fail (date_set);

    if (all_day_event) {
        /* All Day Events are simple. We just compare the dates and if
         * start > end we copy one of them to the other. */
        gint cmp = icaltime_compare_date_only (start_tt, end_tt);
        if (cmp > 0) {
            if (adjust_end_time) {
                end_tt = start_tt;
                set_end_date = TRUE;
            } else {
                start_tt = end_tt;
                set_start_date = TRUE;
            }
        }

        start_tt.is_date = TRUE;
        end_tt.is_date = TRUE;
    } else {
        /* For DATE-TIME events, we have to convert to the same
         * timezone before comparing. */
        e_date_edit_get_time_of_day (E_DATE_EDIT (priv->start_time),
                         &start_tt.hour,
                         &start_tt.minute);
        e_date_edit_get_time_of_day (E_DATE_EDIT (priv->end_time),
                         &end_tt.hour,
                         &end_tt.minute);

        start_zone = e_timezone_entry_get_timezone (E_TIMEZONE_ENTRY (priv->start_timezone));

        if (check_start_before_end (&start_tt, start_zone,
                        &end_tt, start_zone,
                        adjust_end_time)) {
            if (adjust_end_time)
                set_end_date = TRUE;
            else
                set_start_date = TRUE;
        }
    }

    if (set_start_date) {
        g_signal_handlers_block_matched (priv->start_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
        e_date_edit_set_date (E_DATE_EDIT (priv->start_time),
                      start_tt.year, start_tt.month,
                      start_tt.day);
        e_date_edit_set_time_of_day (E_DATE_EDIT (priv->start_time),
                         start_tt.hour, start_tt.minute);
        g_signal_handlers_unblock_matched (priv->start_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    }

    if (set_end_date) {
        g_signal_handlers_block_matched (priv->end_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
        e_date_edit_set_date (E_DATE_EDIT (priv->end_time),
                      end_tt.year, end_tt.month, end_tt.day);
        e_date_edit_set_time_of_day (E_DATE_EDIT (priv->end_time),
                         end_tt.hour, end_tt.minute);
        g_signal_handlers_unblock_matched (priv->end_time, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, epage);
    }

    /* Notify upstream */
    notify_dates_changed (epage, &start_tt, &end_tt);
}

static gboolean
safe_to_process_date_changed_signal (GtkWidget *dedit_widget)
{
    EDateEdit *dedit;
    GtkWidget *entry;

    g_return_val_if_fail (dedit_widget != NULL, FALSE);

    dedit = E_DATE_EDIT (dedit_widget);
    g_return_val_if_fail (dedit != NULL, FALSE);

    entry = e_date_edit_get_entry (dedit);

    return !entry || !gtk_widget_has_focus (entry);
}

/* Callback used when the start date widget change.  We check that the
 * start date < end date and we set the "all day event" button as appropriate.
 */
static void
start_date_changed_cb (GtkWidget *dedit,
                       EventPage *epage)
{
    if (!safe_to_process_date_changed_signal (dedit))
        return;

    hour_minute_changed (epage);
    times_updated (epage, TRUE);
}

/* Callback used when the end date widget change.  We check that the
 * start date < end date and we set the "all day event" button as appropriate.
 */
static void
end_date_changed_cb (GtkWidget *dedit,
                     EventPage *epage)
{
    if (!safe_to_process_date_changed_signal (dedit)) {
        return;
    }

    times_updated (epage, FALSE);
}

/* Callback used when the start timezone is changed. If sync_timezones is set,
 * we set the end timezone to the same value. It also updates the start time
 * labels on the other notebook pages.
 */
static void
start_timezone_changed_cb (GtkWidget *widget,
                           EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;

    if (priv->sync_timezones) {
        comp_editor_page_set_updating (COMP_EDITOR_PAGE (epage), TRUE);
        /*the earlier method caused an infinite recursion*/
        priv->end_timezone = priv->start_timezone;
        gtk_widget_show_all (priv->end_timezone);
        comp_editor_page_set_updating (COMP_EDITOR_PAGE (epage), FALSE);
    }

    times_updated (epage, TRUE);
}

/* Callback used when the categories button is clicked; we must bring up the
 * category list dialog.
 */
static void
categories_clicked_cb (GtkWidget *button,
                       EventPage *epage)
{
    GtkEntry *entry;

    entry = GTK_ENTRY (epage->priv->categories);
    e_categories_config_open_dialog_for_entry (entry);
}

void
event_page_send_options_clicked_cb (EventPage *epage)
{
    EventPagePrivate *priv;
    CompEditor *editor;
    GtkWidget *toplevel;
    ESource *source;
    ECalClient *client;

    priv = epage->priv;
    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    client = comp_editor_get_client (editor);

    if (!priv->sod) {
        priv->sod = e_send_options_dialog_new ();
        source = e_source_combo_box_ref_active (
            E_SOURCE_COMBO_BOX (priv->source_combo_box));
        e_send_options_utils_set_default_data (
            priv->sod, source, "calendar");
        priv->sod->data->initialized = TRUE;
        g_object_unref (source);
    }

    if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_GEN_OPTIONS)) {
        e_send_options_set_need_general_options (priv->sod, FALSE);
    }

    toplevel = gtk_widget_get_toplevel (priv->main);
    e_send_options_dialog_run (priv->sod, toplevel, E_ITEM_CALENDAR);
}

static void
epage_client_opened_cb (GObject *source_object,
                        GAsyncResult *result,
                        gpointer user_data)
{
    ESource *source = E_SOURCE (source_object);
    EClient *client = NULL;
    EventPage *epage = user_data;
    EventPagePrivate *priv;
    CompEditor *editor;
    GError *error = NULL;

    if (!e_client_utils_open_new_finish (source, result, &client, &error)) {
        if (g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_CANCELLED) ||
            g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
            g_clear_error (&error);
            return;
        }
    }

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    priv = epage->priv;

    if (error) {
        GtkWidget *dialog;
        ECalClient *old_client;

        old_client = comp_editor_get_client (editor);

        e_source_combo_box_set_active (
            E_SOURCE_COMBO_BOX (priv->source_combo_box),
            e_client_get_source (E_CLIENT (old_client)));

        dialog = gtk_message_dialog_new (
            NULL, GTK_DIALOG_MODAL,
            GTK_MESSAGE_WARNING, GTK_BUTTONS_OK,
            _("Unable to open the calendar '%s': %s"),
            e_source_get_display_name (source),
            error->message);
        gtk_dialog_run (GTK_DIALOG (dialog));
        gtk_widget_destroy (dialog);

        g_clear_error (&error);
    } else {
        gchar *backend_addr = NULL;
        icaltimezone *zone;
        ECalClient *cal_client = E_CAL_CLIENT (client);

        g_return_if_fail (cal_client != NULL);

        zone = e_meeting_store_get_timezone (priv->meeting_store);
        e_cal_client_set_default_timezone (cal_client, zone);

        comp_editor_set_client (editor, cal_client);
        if (e_client_check_capability (client, CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS) && priv->is_meeting)
            event_page_show_options (epage);
        else
            event_page_hide_options (epage);

        e_client_get_backend_property_sync (client, CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);

        if (priv->is_meeting)
            event_page_select_organizer (epage, backend_addr);

        set_subscriber_info_string (epage, backend_addr);
        g_free (backend_addr);

        sensitize_widgets (epage);

        alarm_list_dialog_set_client (
            priv->alarm_list_dlg_widget, cal_client);
    }
}

static void
source_changed_cb (ESourceComboBox *source_combo_box,
                   EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;
    ESource *source;

    if (comp_editor_page_get_updating (COMP_EDITOR_PAGE (epage)))
        return;

    source = e_source_combo_box_ref_active (source_combo_box);
    g_return_if_fail (source != NULL);

    if (priv->open_cancellable) {
        g_cancellable_cancel (priv->open_cancellable);
        g_object_unref (priv->open_cancellable);
    }
    priv->open_cancellable = g_cancellable_new ();

    e_client_utils_open_new (
        source, E_CLIENT_SOURCE_TYPE_EVENTS,
        FALSE, priv->open_cancellable,
        epage_client_opened_cb, epage);

    g_object_unref (source);
}

static void
set_subscriber_info_string (EventPage *epage,
                            const gchar *backend_address)
{
    if (!check_starts_in_the_past (epage))
        event_page_set_info_string (epage, NULL, NULL);
}

static void
alarm_changed_cb (GtkWidget *widget,
                  EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;

    if (e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map) != ALARM_NONE) {
        ECalComponentAlarm *ca;
        ECalComponentAlarmTrigger trigger;
        icalcomponent *icalcomp;
        icalproperty *icalprop;
        gint alarm_type;

        ca = e_cal_component_alarm_new ();

        e_cal_component_alarm_set_action (ca, E_CAL_COMPONENT_ALARM_DISPLAY);

        memset (&trigger, 0, sizeof (ECalComponentAlarmTrigger));
        trigger.type = E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_START;
        trigger.u.rel_duration.is_neg = 1;

        alarm_type = e_dialog_combo_box_get (priv->alarm_time_combo, priv->alarm_map);
        switch (alarm_type) {
        case ALARM_15_MINUTES:
            e_alarm_list_clear (priv->alarm_list_store);
            trigger.u.rel_duration.minutes = 15;
            break;

        case ALARM_1_HOUR:
            e_alarm_list_clear (priv->alarm_list_store);
            trigger.u.rel_duration.hours = 1;
            break;

        case ALARM_1_DAY:
            e_alarm_list_clear (priv->alarm_list_store);
            trigger.u.rel_duration.days = 1;
            break;

        case ALARM_USER_TIME:
            e_alarm_list_clear (priv->alarm_list_store);
            switch (e_meeting_store_get_default_reminder_units (priv->meeting_store)) {
            case E_DURATION_DAYS:
                trigger.u.rel_duration.days = priv->alarm_interval;
                break;

            case E_DURATION_HOURS:
                trigger.u.rel_duration.hours = priv->alarm_interval;
                break;

            case E_DURATION_MINUTES:
                trigger.u.rel_duration.minutes = priv->alarm_interval;
                break;
            }
            break;
        case ALARM_CUSTOM:
            gtk_widget_set_sensitive (priv->alarm_box, TRUE);

        default:
            break;
        }

        if (alarm_type != ALARM_CUSTOM) {
            e_cal_component_alarm_set_trigger (ca, trigger);

            icalcomp = e_cal_component_alarm_get_icalcomponent (ca);
            icalprop = icalproperty_new_x ("1");
            icalproperty_set_x_name (icalprop, "X-EVOLUTION-NEEDS-DESCRIPTION");
            icalcomponent_add_property (icalcomp, icalprop);

            e_alarm_list_append (priv->alarm_list_store, NULL, ca);
        }
        if (!priv->alarm_icon) {
            priv->alarm_icon = create_alarm_image_button ("stock_bell", _("This event has reminders"), epage);
            gtk_box_pack_start ((GtkBox *) priv->status_icons, priv->alarm_icon, FALSE, FALSE, 6);
        }
    } else {
        e_alarm_list_clear (priv->alarm_list_store);
        if (priv->alarm_icon) {
            gtk_container_remove (GTK_CONTAINER (priv->status_icons), priv->alarm_icon);
            priv->alarm_icon = NULL;
        }
    }

    sensitize_widgets (epage);
}

#if 0
static void
alarm_custom_clicked_cb (GtkWidget *widget,
                         EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;
    EAlarmList *temp_list_store;
    CompEditor *editor;
    GtkTreeModel *model;
    GtkTreeIter iter;
    gboolean valid_iter;
    GtkWidget *toplevel;
    ECalClient *client;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    client = comp_editor_get_client (editor);

    /* Make a copy of the list store in case the user cancels */
    temp_list_store = e_alarm_list_new ();
    model = GTK_TREE_MODEL (priv->alarm_list_store);

    for (valid_iter = gtk_tree_model_get_iter_first (model, &iter); valid_iter;
         valid_iter = gtk_tree_model_iter_next (model, &iter)) {
        ECalComponentAlarm *alarm;

        alarm = (ECalComponentAlarm *) e_alarm_list_get_alarm (priv->alarm_list_store, &iter);
        if (alarm == NULL) {
            g_warning ("alarm is NULL\n");
            continue;
        }

        e_alarm_list_append (temp_list_store, NULL, alarm);
    }

    toplevel = gtk_widget_get_toplevel (priv->main);
    if (alarm_list_dialog_run (toplevel, client, temp_list_store)) {
        g_object_unref (priv->alarm_list_store);
        priv->alarm_list_store = temp_list_store;

        comp_editor_set_changed (editor, TRUE);
    } else {
        g_object_unref (temp_list_store);
    }

    /* If the user erases everything, uncheck the alarm toggle */
    valid_iter = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->alarm_list_store), &iter);

    sensitize_widgets (epage);
}
#endif

/* Hooks the widget signals */
static gboolean
init_widgets (EventPage *epage)
{
    EventPagePrivate *priv = epage->priv;
    EShell *shell;
    CompEditor *editor;
    ESourceRegistry *registry;
    GtkTextBuffer *text_buffer;
    icaltimezone *zone;
    gchar *combo_label = NULL;
    GtkAction *action;
    GtkTreeSelection *selection;
    gboolean active;
    ECalClient *client;
    GtkTreeIter iter;
    GtkListStore *store;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));

    shell = comp_editor_get_shell (editor);
    client = comp_editor_get_client (editor);

    registry = e_shell_get_registry (shell);

    /* Make sure the EDateEdit widgets use our timezones to get the
     * current time. */
    e_date_edit_set_get_time_callback (
        E_DATE_EDIT (priv->start_time),
        (EDateEditGetTimeCallback) comp_editor_get_current_time,
        g_object_ref (editor),
        (GDestroyNotify) g_object_unref);
    e_date_edit_set_get_time_callback (
        E_DATE_EDIT (priv->end_time),
        (EDateEditGetTimeCallback) comp_editor_get_current_time,
        g_object_ref (editor),
        (GDestroyNotify) g_object_unref);

    /* Generic informative messages */
    gtk_widget_hide (priv->info_hbox);

    /* Summary */
    g_signal_connect (
        priv->summary, "changed",
        G_CALLBACK (summary_changed_cb), epage);

    /* Description */
    text_buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (priv->description));

    gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (priv->description), GTK_WRAP_WORD);

    e_buffer_tagger_connect (GTK_TEXT_VIEW (priv->description));

    /* Start and end times */
    g_signal_connect (
        priv->start_time, "changed",
        G_CALLBACK (start_date_changed_cb), epage);
    g_signal_connect (
        priv->end_time, "changed",
        G_CALLBACK (end_date_changed_cb), epage);

    /* Categories */
    g_signal_connect (
        priv->categories_btn, "clicked",
        G_CALLBACK (categories_clicked_cb), epage);

    /* Source selector */
    g_signal_connect (
        priv->source_combo_box, "changed",
        G_CALLBACK (source_changed_cb), epage);

    /* Alarms */
    priv->alarm_list_store = e_alarm_list_new ();
    g_signal_connect_swapped (
        priv->alarm_list_store, "row-inserted",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->alarm_list_store, "row-deleted",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->alarm_list_store, "row-changed",
        G_CALLBACK (comp_editor_page_changed), epage);

    /* Timezone changed */
    g_signal_connect (
        priv->start_timezone, "changed",
        G_CALLBACK (start_timezone_changed_cb), epage);

    e_meeting_list_view_column_set_visible (
        priv->list_view, E_MEETING_STORE_ATTENDEE_COL, TRUE);

    action = comp_editor_get_action (editor, "view-role");
    active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    e_meeting_list_view_column_set_visible (
        priv->list_view, E_MEETING_STORE_ROLE_COL, active);

    action = comp_editor_get_action (editor, "view-rsvp");
    active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    e_meeting_list_view_column_set_visible (
        priv->list_view, E_MEETING_STORE_RSVP_COL, active);

    action = comp_editor_get_action (editor, "view-status");
    active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    e_meeting_list_view_column_set_visible (
        priv->list_view, E_MEETING_STORE_STATUS_COL, active);

    action = comp_editor_get_action (editor, "view-type");
    active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    e_meeting_list_view_column_set_visible (
        priv->list_view, E_MEETING_STORE_TYPE_COL, active);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->list_view));
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);

    g_signal_connect (
        priv->list_view, "event",
        G_CALLBACK (list_view_event), epage);
    g_signal_connect (
        priv->list_view, "key_press_event",
        G_CALLBACK (list_key_press), epage);

    /* Add attendee button */
    g_signal_connect (
        priv->add, "clicked",
        G_CALLBACK (add_clicked_cb), epage);

    /* Remove attendee button */
    g_signal_connect (
        priv->remove, "clicked",
        G_CALLBACK (remove_clicked_cb), epage);

    /* Edit attendee button */
    g_signal_connect (
        priv->edit, "clicked",
        G_CALLBACK (edit_clicked_cb), epage);

    /* Contacts button */
    g_signal_connect (
        priv->invite, "clicked",
        G_CALLBACK (invite_cb), epage);

    /* Alarm dialog */
    g_signal_connect (
        priv->alarm_dialog, "response",
        G_CALLBACK (gtk_widget_hide), priv->alarm_dialog);
    g_signal_connect (
        priv->alarm_dialog, "delete-event",
        G_CALLBACK (gtk_widget_hide), priv->alarm_dialog);
    priv->alarm_list_dlg_widget = alarm_list_dialog_peek (
        registry, client, priv->alarm_list_store);
    gtk_widget_reparent (priv->alarm_list_dlg_widget, priv->alarm_box);
    gtk_widget_show_all (priv->alarm_list_dlg_widget);
    gtk_widget_hide (priv->alarm_dialog);
    gtk_window_set_modal (GTK_WINDOW (priv->alarm_dialog), TRUE);

    /* Meeting List View */
    g_signal_connect (
        priv->list_view, "attendee_added",
        G_CALLBACK (attendee_added_cb), epage);

    gtk_widget_show (GTK_WIDGET (priv->list_view));

    /* categories */
    action = comp_editor_get_action (editor, "view-categories");
    if (!gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action))) {
        gtk_widget_hide (priv->categories_btn);
        gtk_widget_hide (priv->categories);
    } else {
        gtk_widget_show (priv->categories_btn);
        gtk_widget_show (priv->categories);
    }

    /* End time selector */
    gtk_combo_box_set_active (GTK_COMBO_BOX (priv->end_time_combo), 1);
    gtk_widget_hide (priv->time_hour);
    gtk_widget_show (priv->end_time);
    g_signal_connect (
        priv->end_time_combo, "changed",
        G_CALLBACK (time_sel_changed), epage);
    update_end_time_combo ( epage);

    /* Hour and Minute selector */
    gtk_spin_button_set_range ( (GtkSpinButton *) priv->hour_selector, 0, G_MAXINT);
    g_signal_connect (
        priv->hour_selector, "value-changed",
        G_CALLBACK (hour_sel_changed), epage);
    g_signal_connect (
        priv->minute_selector, "value-changed",
        G_CALLBACK (minute_sel_changed), epage);

    g_signal_connect (
        priv->minute_selector, "focus-out-event",
        G_CALLBACK (minute_sel_focus_out), epage);

    /* Add the user defined time if necessary */
    priv->alarm_units =
        e_meeting_store_get_default_reminder_units (
        priv->meeting_store);
    priv->alarm_interval =
        e_meeting_store_get_default_reminder_interval (
        priv->meeting_store);

    combo_label = NULL;
    switch (priv->alarm_units) {
    case E_DURATION_DAYS:
        if (priv->alarm_interval != 1) {
            combo_label = g_strdup_printf (ngettext("%d day before appointment", "%d days before appointment", priv->alarm_interval), priv->alarm_interval);
        }
        break;

    case E_DURATION_HOURS:
        if (priv->alarm_interval != 1) {
            combo_label = g_strdup_printf (ngettext("%d hour before appointment", "%d hours before appointment", priv->alarm_interval), priv->alarm_interval);
        }
        break;

    case E_DURATION_MINUTES:
        if (priv->alarm_interval != 15) {
            combo_label = g_strdup_printf (ngettext("%d minute before appointment", "%d minutes before appointment", priv->alarm_interval), priv->alarm_interval);
        }
        break;
    }

    store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (priv->alarm_time_combo)));
    if (combo_label) {
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter,
            0, combo_label,
            -1);
        g_free (combo_label);
        priv->alarm_map = alarm_map_with_user_time;
    } else {
        priv->alarm_map = alarm_map_without_user_time;
    }

    gtk_list_store_append (store, &iter);
    gtk_list_store_set (store, &iter,
        0, _("Customize"),
        -1);

    gtk_list_store_insert (store, &iter, 0);
    gtk_list_store_set (store, &iter,
        /* Translators: "None" for "No reminder set" */
        0, C_("cal-reminders", "None"),
        -1);

    g_signal_connect_swapped (
        priv->alarm_time_combo, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect (
        priv->alarm_time_combo, "changed",
        G_CALLBACK (alarm_changed_cb), epage);

    /* Belongs to priv->description */
    g_signal_connect_swapped (
        text_buffer, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->summary, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->location, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->start_time, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->end_time, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->categories, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->source_combo_box, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);
    g_signal_connect_swapped (
        priv->start_timezone, "changed",
        G_CALLBACK (comp_editor_page_changed), epage);

    /* Set the default timezone, so the timezone entry may be hidden. */
    zone = e_meeting_store_get_timezone (priv->meeting_store);
    e_timezone_entry_set_default_timezone (E_TIMEZONE_ENTRY (priv->start_timezone), zone);
    e_timezone_entry_set_default_timezone (E_TIMEZONE_ENTRY (priv->end_timezone), zone);

    action = comp_editor_get_action (editor, "view-time-zone");
    active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
    event_page_set_show_timezone (epage, active);

    return TRUE;
}

static void
event_page_select_organizer (EventPage *epage,
                             const gchar *backend_address)
{
    EventPagePrivate *priv = epage->priv;
    const gchar *default_address;
    gint ii;

    /* Treat an empty backend address as NULL. */
    if (backend_address != NULL && *backend_address == '\0')
        backend_address = NULL;

    default_address = priv->fallback_address;

    if (backend_address != NULL) {
        for (ii = 0; priv->address_strings[ii] != NULL; ii++) {
            if (g_strrstr (priv->address_strings[ii], backend_address) != NULL) {
                default_address = priv->address_strings[ii];
                break;
            }
        }
    }

    if (default_address != NULL) {
        if (!priv->comp || !e_cal_component_has_organizer (priv->comp)) {
            GtkEntry *entry = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (priv->organizer)));

            g_signal_handlers_block_by_func (entry, organizer_changed_cb, epage);
            gtk_entry_set_text (entry, default_address);
            g_signal_handlers_unblock_by_func (entry, organizer_changed_cb, epage);
        }
    } else
        g_warning ("No potential organizers!");
}

/**
 * event_page_construct:
 * @epage: An event page.
 *
 * Constructs an event page by loading its Glade data.
 *
 * Return value: The same object as @epage, or NULL if the widgets could not be
 * created.
 **/
EventPage *
event_page_construct (EventPage *epage,
                      EMeetingStore *meeting_store)
{
    EventPagePrivate *priv;
    EShell *shell;
    CompEditor *editor;
    ESourceRegistry *registry;
    GtkComboBox *combo_box;
    GtkListStore *list_store;
    GtkTreeModel *model;
    GtkTreeIter iter;
    gint ii;

    editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
    shell = comp_editor_get_shell (editor);

    priv = epage->priv;
    priv->meeting_store = g_object_ref (meeting_store);

    /* Make sure our custom widget classes are registered with
     * GType before we load the GtkBuilder definition file. */
    E_TYPE_DATE_EDIT;
    E_TYPE_TIMEZONE_ENTRY;
    E_TYPE_SPELL_ENTRY;

    priv->builder = gtk_builder_new ();
    e_load_ui_builder_definition (priv->builder, "event-page.ui");

    if (!get_widgets (epage)) {
        g_message ("event_page_construct(): "
               "Could not find all widgets in the XML file!");
        return NULL;
    }

    /* Create entry completion and attach it to the entry */
    priv->location_completion = gtk_entry_completion_new ();
    gtk_entry_set_completion (GTK_ENTRY (priv->location),
        priv->location_completion);

    /* Initialize completino model */
    list_store = gtk_list_store_new (1, G_TYPE_STRING);
    gtk_entry_completion_set_model (priv->location_completion,
        GTK_TREE_MODEL (list_store));
    gtk_entry_completion_set_text_column (priv->location_completion, 0);

    combo_box = GTK_COMBO_BOX (priv->organizer);
    model = gtk_combo_box_get_model (combo_box);
    list_store = GTK_LIST_STORE (model);

    registry = e_shell_get_registry (shell);
    priv->address_strings = itip_get_user_identities (registry);
    priv->fallback_address = itip_get_fallback_identity (registry);

    /* FIXME Could we just use a GtkComboBoxText? */
    for (ii = 0; priv->address_strings[ii] != NULL; ii++) {
        gtk_list_store_append (list_store, &iter);
        gtk_list_store_set (
            list_store, &iter,
            0, priv->address_strings[ii], -1);
    }

    gtk_combo_box_set_active (combo_box, 0);

    g_signal_connect (
        gtk_bin_get_child (GTK_BIN (priv->organizer)), "changed",
        G_CALLBACK (organizer_changed_cb), epage);

    if (!init_widgets (epage)) {
        g_message ("event_page_construct(): "
               "Could not initialize the widgets!");
        return NULL;
    }

    return epage;
}

/**
 * event_page_new:
 *
 * Creates a new event page.
 *
 * Return value: A newly-created event page, or NULL if the page could
 * not be created.
 **/
EventPage *
event_page_new (EMeetingStore *meeting_store,
                CompEditor *editor)
{
    EventPage *epage;

    epage = g_object_new (TYPE_EVENT_PAGE, "editor", editor, NULL);
    if (!event_page_construct (epage, meeting_store)) {
        g_object_unref (epage);
        g_return_val_if_reached (NULL);
    }

    return epage;
}

static void
set_attendees (ECalComponent *comp,
               const GPtrArray *attendees)
{
    GSList *comp_attendees = NULL, *l;
    gint i;

    for (i = 0; i < attendees->len; i++) {
        EMeetingAttendee *ia = g_ptr_array_index (attendees, i);
        ECalComponentAttendee *ca;

        ca = e_meeting_attendee_as_e_cal_component_attendee (ia);

        comp_attendees = g_slist_prepend (comp_attendees, ca);

    }
    comp_attendees = g_slist_reverse (comp_attendees);

    e_cal_component_set_attendee_list (comp, comp_attendees);

    for (l = comp_attendees; l != NULL; l = l->next)
        g_free (l->data);
    g_slist_free (comp_attendees);
}

ECalComponent *
event_page_get_cancel_comp (EventPage *page)
{
    EventPagePrivate *priv;

    g_return_val_if_fail (page != NULL, NULL);
    g_return_val_if_fail (IS_EVENT_PAGE (page), NULL);

    priv = page->priv;

    if (priv->deleted_attendees->len == 0)
        return NULL;

    set_attendees (priv->comp, priv->deleted_attendees);

    return e_cal_component_clone (priv->comp);
}

ENameSelector *
event_page_get_name_selector (EventPage *epage)
{
    EventPagePrivate *priv;

    g_return_val_if_fail (epage != NULL, NULL);
    g_return_val_if_fail (IS_EVENT_PAGE (epage), NULL);

    priv = epage->priv;

    return e_meeting_list_view_get_name_selector (priv->list_view);
}

/**
 * event_page_remove_all_attendees
 * @epage: an #EventPage
 *
 * Removes all attendees from the meeting store and name selector.
 **/
void
event_page_remove_all_attendees (EventPage *epage)
{
    EventPagePrivate *priv;

    g_return_if_fail (epage != NULL);
    g_return_if_fail (IS_EVENT_PAGE (epage));

    priv = epage->priv;

    e_meeting_store_remove_all_attendees (priv->meeting_store);
    e_meeting_list_view_remove_all_attendees_from_name_selector (E_MEETING_LIST_VIEW (priv->list_view));
}

GtkWidget *
event_page_get_alarm_page (EventPage *epage)
{
    EventPagePrivate *priv;
    GtkWidget *alarm_page, *tmp;

    g_return_val_if_fail (epage != NULL, NULL);
    g_return_val_if_fail (IS_EVENT_PAGE (epage), NULL);

    priv = epage->priv;

    tmp = GW("dialog-vbox1");
    alarm_page = GW("vbox2");
    g_object_ref (alarm_page);
    gtk_container_remove ((GtkContainer *) tmp, alarm_page);

    return alarm_page;
}

GtkWidget *
event_page_get_attendee_page (EventPage *epage)
{
    EventPagePrivate *priv;
    GtkWidget *apage;

    g_return_val_if_fail (epage != NULL, NULL);
    g_return_val_if_fail (IS_EVENT_PAGE (epage), NULL);

    priv = epage->priv;

    apage = priv->list_box;
    g_object_ref (apage);
    gtk_container_remove ((GtkContainer *) gtk_widget_get_parent (apage), apage);
    gtk_widget_hide (priv->attendee_box);

    return apage;
}

#undef GW