path: root/calendar/alarm-notify/alarm-notify.c

/*
 * 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>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <string.h>
#include <camel/camel.h>

#include "e-util/e-util.h"

#include "alarm.h"
#include "alarm-notify.h"
#include "alarm-queue.h"
#include "config-data.h"

#define ALARM_NOTIFY_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), TYPE_ALARM_NOTIFY, AlarmNotifyPrivate))

#define APPLICATION_ID "org.gnome.EvolutionAlarmNotify"

struct _AlarmNotifyPrivate {
    ESourceRegistry *registry;
    GHashTable *clients;
    GMutex mutex;
};

/* Forward Declarations */
static void alarm_notify_initable_init  (GInitableIface *interface);

G_DEFINE_TYPE_WITH_CODE (
    AlarmNotify, alarm_notify, GTK_TYPE_APPLICATION,
    G_IMPLEMENT_INTERFACE (
        G_TYPE_INITABLE, alarm_notify_initable_init))

static void
alarm_notify_load_calendars (AlarmNotify *an)
{
    GList *list, *iter;

    /* Add all available ESources.  alarm_notify_add_calendar() will
     * discard the ones we're not interested in (mail accounts, etc.). */

    list = e_source_registry_list_sources (an->priv->registry, NULL);

    for (iter = list; iter != NULL; iter = g_list_next (iter))
        alarm_notify_add_calendar (an, E_SOURCE (iter->data));

    g_list_free_full (list, (GDestroyNotify) g_object_unref);
}

static void
alarm_notify_dispose (GObject *object)
{
    AlarmNotifyPrivate *priv;
    GHashTableIter iter;
    gpointer client;

    priv = ALARM_NOTIFY_GET_PRIVATE (object);

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

    g_hash_table_iter_init (&iter, priv->clients);
    while (g_hash_table_iter_next (&iter, NULL, &client))
        alarm_queue_remove_client (client, TRUE);

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

static void
alarm_notify_finalize (GObject *object)
{
    AlarmNotifyPrivate *priv;

    priv = ALARM_NOTIFY_GET_PRIVATE (object);

    g_hash_table_destroy (priv->clients);

    alarm_queue_done ();
    alarm_done ();

    g_mutex_clear (&priv->mutex);

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

static void
alarm_notify_startup (GApplication *application)
{
    GtkIconTheme *icon_theme;

    /* Chain up to parent's startup() method. */
    G_APPLICATION_CLASS (alarm_notify_parent_class)->startup (application);

    /* Keep the application running. */
    g_application_hold (application);

    config_data_init_debugging ();

    /* FIXME Ideally we should not use Camel libraries in calendar,
     *       though it is the case currently for attachments.  Remove
     *       this once that is fixed. */

    /* Initialize Camel's type system. */
    camel_object_get_type ();

    icon_theme = gtk_icon_theme_get_default ();
    gtk_icon_theme_append_search_path (icon_theme, EVOLUTION_ICONDIR);
}

static void
alarm_notify_activate (GApplication *application)
{
    AlarmNotify *an = ALARM_NOTIFY (application);

    if (g_application_get_is_remote (application)) {
        g_application_quit (application);
        return;
    }

    if (an->priv->registry != NULL) {
        alarm_notify_load_calendars (an);

        g_signal_connect_swapped (
            an->priv->registry, "source-added",
            G_CALLBACK (alarm_notify_add_calendar), an);

        g_signal_connect_swapped (
            an->priv->registry, "source-removed",
            G_CALLBACK (alarm_notify_remove_calendar), an);
    }
}

static gboolean
alarm_notify_initable (GInitable *initable,
                       GCancellable *cancellable,
                       GError **error)
{
    AlarmNotify *an = ALARM_NOTIFY (initable);

    an->priv->registry = e_source_registry_new_sync (cancellable, error);

    return (an->priv->registry != NULL);
}

static void
alarm_notify_class_init (AlarmNotifyClass *class)
{
    GObjectClass *object_class;
    GApplicationClass *application_class;

    g_type_class_add_private (class, sizeof (AlarmNotifyPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->dispose = alarm_notify_dispose;
    object_class->finalize = alarm_notify_finalize;

    application_class = G_APPLICATION_CLASS (class);
    application_class->startup = alarm_notify_startup;
    application_class->activate = alarm_notify_activate;
}

static void
alarm_notify_initable_init (GInitableIface *interface)
{
    /* XXX Awkward name since we're missing an 'E' prefix. */
    interface->init = alarm_notify_initable;
}

static void
alarm_notify_init (AlarmNotify *an)
{
    an->priv = ALARM_NOTIFY_GET_PRIVATE (an);
    g_mutex_init (&an->priv->mutex);

    an->priv->clients = g_hash_table_new_full (
        (GHashFunc) e_source_hash,
        (GEqualFunc) e_source_equal,
        (GDestroyNotify) g_object_unref,
        (GDestroyNotify) g_object_unref);

    alarm_queue_init (an);
}

/**
 * alarm_notify_new:
 *
 * Creates a new #AlarmNotify object.
 *
 * Returns: a newly-created #AlarmNotify
 **/
AlarmNotify *
alarm_notify_new (GCancellable *cancellable,
                  GError **error)
{
    return g_initable_new (
        TYPE_ALARM_NOTIFY, cancellable, error,
        "application-id", APPLICATION_ID, NULL);
}

static void
client_connect_cb (GObject *source_object,
                   GAsyncResult *result,
                   gpointer user_data)
{
    ESource *source = E_SOURCE (source_object);
    AlarmNotify *an = ALARM_NOTIFY (user_data);
    EClient *client;
    ECalClient *cal_client;
    GError *error = NULL;

    client = e_cal_client_connect_finish (result, &error);

    /* Sanity check. */
    g_return_if_fail (
        ((client != NULL) && (error == NULL)) ||
        ((client == NULL) && (error != NULL)));

    if (error != NULL) {
        debug (
            ("Failed to open '%s' (%s): %s",
            e_source_get_display_name (source),
            e_source_get_uid (source), error->message));
        g_error_free (error);
        return;
    }

    g_hash_table_insert (
        an->priv->clients,
        g_object_ref (source), client);

    cal_client = E_CAL_CLIENT (client);

    /* to resolve floating DATE-TIME properly */
    e_cal_client_set_default_timezone (
        cal_client, config_data_get_timezone ());

    alarm_queue_add_client (cal_client);
}

/**
 * alarm_notify_add_calendar:
 * @an: an #AlarmNotify
 * @source: the #ESource to create an #ECal from
 *
 * Tells the alarm notification service to load a calendar and start
 * monitoring its alarms.
 **/
void
alarm_notify_add_calendar (AlarmNotify *an,
                           ESource *source)
{
    ECalClientSourceType source_type;
    const gchar *extension_name;

    g_return_if_fail (IS_ALARM_NOTIFY (an));

    g_mutex_lock (&an->priv->mutex);

    /* Check if we already know about this ESource. */
    if (g_hash_table_lookup (an->priv->clients, source) != NULL) {
        g_mutex_unlock (&an->priv->mutex);
        return;
    }

    /* Check if this is an ESource we're interested in. */
    if (e_source_has_extension (source, E_SOURCE_EXTENSION_CALENDAR))
        source_type = E_CAL_CLIENT_SOURCE_TYPE_EVENTS;
    else if (e_source_has_extension (source, E_SOURCE_EXTENSION_MEMO_LIST))
        source_type = E_CAL_CLIENT_SOURCE_TYPE_MEMOS;
    else if (e_source_has_extension (source, E_SOURCE_EXTENSION_TASK_LIST))
        source_type = E_CAL_CLIENT_SOURCE_TYPE_TASKS;
    else {
        g_mutex_unlock (&an->priv->mutex);
        return;
    }

    /* Check if alarms are even wanted on this ESource. */
    extension_name = E_SOURCE_EXTENSION_ALARMS;
    if (e_source_has_extension (source, extension_name)) {
        ESourceAlarms *extension;
        extension = e_source_get_extension (source, extension_name);
        if (!e_source_alarms_get_include_me (extension)) {
            g_mutex_unlock (&an->priv->mutex);
            return;
        }
    }

    debug (("Opening '%s' (%s)", e_source_get_display_name (source), e_source_get_uid (source)));

    e_cal_client_connect (
        source, source_type, NULL,
        client_connect_cb, an);

    g_mutex_unlock (&an->priv->mutex);
}

void
alarm_notify_remove_calendar (AlarmNotify *an,
                              ESource *source)
{
    ECalClient *cal_client;

    cal_client = g_hash_table_lookup (an->priv->clients, source);
    if (cal_client != NULL) {
        alarm_queue_remove_client (cal_client, FALSE);
        g_hash_table_remove (an->priv->clients, source);
    }
}