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/* Evolution calendar - alarm notification dialog
 *
 * Copyright (C) 2000 Helix Code, Inc.
 * Copyright (C) 2000 Ximian, Inc.
 *
 * Author: Federico Mena-Quintero <federico@ximian.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

#include <config.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkspinbutton.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkwindow.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <glade/glade.h>
#include "alarm-notify-dialog.h"



/* The useful contents of the alarm notify dialog */
typedef struct {
    GladeXML *xml;

    GtkWidget *dialog;
    GtkWidget *close;
    GtkWidget *snooze;
    GtkWidget *edit;
    GtkWidget *heading;
    GtkWidget *summary;
    GtkWidget *snooze_time;

    AlarmNotifyFunc func;
    gpointer func_data;
} AlarmNotify;



/* Callback used when the notify dialog is destroyed */
static void
dialog_destroy_cb (GtkObject *object, gpointer data)
{
    AlarmNotify *an;

    an = data;
    gtk_object_unref (GTK_OBJECT (an->xml));
    g_free (an);
}

/* Delete_event handler for the alarm notify dialog */
static gint
delete_event_cb (GtkWidget *widget, GdkEvent *event, gpointer data)
{
    AlarmNotify *an;

    an = data;
    g_assert (an->func != NULL);

    (* an->func) (ALARM_NOTIFY_CLOSE, -1, an->func_data);

    gtk_widget_destroy (widget);
    return TRUE;
}

/* Callback for the close button */
static void
close_clicked_cb (GtkWidget *widget, gpointer data)
{
    AlarmNotify *an;

    an = data;
    g_assert (an->func != NULL);

    (* an->func) (ALARM_NOTIFY_CLOSE, -1, an->func_data);

    gtk_widget_destroy (an->dialog);
}

/* Callback for the snooze button */
static void
snooze_clicked_cb (GtkWidget *widget, gpointer data)
{
    AlarmNotify *an;
    int snooze_time;

    an = data;
    g_assert (an->func != NULL);

    snooze_time = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (an->snooze_time));
    (* an->func) (ALARM_NOTIFY_SNOOZE, snooze_time, an->func_data);

    gtk_widget_destroy (an->dialog);
}

/* Callback for the edit button */
static void
edit_clicked_cb (GtkWidget *widget, gpointer data)
{
    AlarmNotify *an;

    an = data;
    g_assert (an->func != NULL);

    (* an->func) (ALARM_NOTIFY_EDIT, -1, an->func_data);

    gtk_widget_destroy (an->dialog);
}

/**
 * alarm_notify_dialog:
 * @trigger: Trigger time for the alarm.
 * @occur: Occurrence time for the event.
 * @comp: Calendar component object which corresponds to the alarm.
 * @func: Function to be called when a dialog action is invoked.
 * @func_data: Closure data for @func.
 * 
 * Runs the alarm notification dialog.  The specified @func will be used to
 * notify the client about result of the actions in the dialog.
 * 
 * Return value: TRUE on success, FALSE if the dialog could not be created.
 **/
gboolean
alarm_notify_dialog (time_t trigger, time_t occur, CalComponent *comp,
             AlarmNotifyFunc func, gpointer func_data)
{
    AlarmNotify *an;
    char buf[256];
    struct tm tm_trigger;
    struct tm tm_occur;
    CalComponentText summary;

    g_return_val_if_fail (trigger != -1, FALSE);
    g_return_val_if_fail (occur != -1, FALSE);
    g_return_val_if_fail (comp != NULL, FALSE);
    g_return_val_if_fail (IS_CAL_COMPONENT (comp), FALSE);
    g_return_val_if_fail (func != NULL, FALSE);

    an = g_new0 (AlarmNotify, 1);

    an->func = func;
    an->func_data = func_data;

    an->xml = glade_xml_new (EVOLUTION_GLADEDIR "/alarm-notify.glade", NULL);
    if (!an->xml) {
        g_message ("alarm_notify_dialog(): Could not load the Glade XML file!");
        g_free (an);
        return FALSE;
    }

    an->dialog = glade_xml_get_widget (an->xml, "alarm-notify");
    an->close = glade_xml_get_widget (an->xml, "close");
    an->snooze = glade_xml_get_widget (an->xml, "snooze");
    an->edit = glade_xml_get_widget (an->xml, "edit");
    an->heading = glade_xml_get_widget (an->xml, "heading");
    an->summary = glade_xml_get_widget (an->xml, "summary");
    an->snooze_time = glade_xml_get_widget (an->xml, "snooze-time");

    if (!(an->dialog && an->close && an->snooze && an->edit && an->heading && an->summary
          && an->snooze_time)) {
        g_message ("alarm_notify_dialog(): Could not find all widgets in Glade file!");
        gtk_object_unref (GTK_OBJECT (an->xml));
        g_free (an);
        return FALSE;
    }

    gtk_object_set_data (GTK_OBJECT (an->dialog), "alarm-notify", an);
    gtk_signal_connect (GTK_OBJECT (an->dialog), "destroy",
                GTK_SIGNAL_FUNC (dialog_destroy_cb), an);

    /* Title */

    /* FIXME: use am_pm_flag or 24-hour time */

    tm_trigger = *localtime (&trigger);
    strftime (buf, sizeof (buf), _("Alarm on %A %b %d %Y %H:%M"), &tm_trigger);
    gtk_window_set_title (GTK_WINDOW (an->dialog), buf);

    /* Heading */

    tm_occur = *localtime (&occur);
    strftime (buf, sizeof (buf),
          _("Notification about your appointment on %A %b %d %Y %H:%M"),
          &tm_occur);
    gtk_label_set_text (GTK_LABEL (an->heading), buf);

    /* Summary */

    cal_component_get_summary (comp, &summary);

    if (summary.value)
        gtk_label_set_text (GTK_LABEL (an->summary), summary.value);
    else
        gtk_label_set_text (GTK_LABEL (an->summary), _("No summary available."));

    /* Connect actions */

    gtk_signal_connect (GTK_OBJECT (an->dialog), "delete_event",
                GTK_SIGNAL_FUNC (delete_event_cb),
                an);
                
    gtk_signal_connect (GTK_OBJECT (an->close), "clicked",
                GTK_SIGNAL_FUNC (close_clicked_cb),
                an);

    gtk_signal_connect (GTK_OBJECT (an->snooze), "clicked",
                GTK_SIGNAL_FUNC (snooze_clicked_cb),
                an);

    gtk_signal_connect (GTK_OBJECT (an->edit), "clicked",
                GTK_SIGNAL_FUNC (edit_clicked_cb),
                an);

    /* Run! */

    gtk_widget_show (an->dialog);
    return TRUE;
}