path: root/plugins/mail-notification/mail-notification.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Author: Miguel Angel Lopez Hernandez <miguel@gulev.org.mx>
 *
 *  Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of version 2 of the GNU General Public
 *  License as published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

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

#include <string.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gconf/gconf-client.h>
#include <libgnome/libgnome.h>

#ifdef HAVE_DBUS
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-lowlevel.h>
#endif

#include <time.h>

#include "e-util/e-config.h"
#include "e-util/e-icon-factory.h"
#include "mail/em-utils.h"
#include "mail/em-event.h"
#include "mail/em-folder-tree-model.h"
#include "camel/camel-folder.h"

#ifdef HAVE_LIBNOTIFY
#include <libnotify/notify.h>
#endif

#define GCONF_KEY_ROOT          "/apps/evolution/eplugin/mail-notification/"
#define GCONF_KEY_NOTIFY_ONLY_INBOX GCONF_KEY_ROOT "notify-only-inbox"
#define GCONF_KEY_ENABLED_DBUS      GCONF_KEY_ROOT "dbus-enabled"
#define GCONF_KEY_ENABLED_STATUS    GCONF_KEY_ROOT "status-enabled"
#define GCONF_KEY_ENABLED_SOUND     GCONF_KEY_ROOT "sound-enabled"

static gboolean enabled = FALSE;
static GtkWidget *get_cfg_widget (void);

/**
 * each part should "implement" its own "public" functions:
 * a) void new_notify_... (EMEventTargetFolder *t)
 *    when new_notify message is sent by Evolution
 *
 * b) void read_notify_... (EMEventTargetMessage *t)
 *    it is called when read_notify message is sent by Evolution
 *
 * c) void enable_... (int enable)
 *    when plugin itself or the part is enabled/disabled
 *
 * d) GtkWidget *get_config_widget_...(void)
 *    to obtain config widget for the particular part
 *
 * It also should have its own gconf key for enabled state. In each particular
 * function it should do its work as expected. enable_... will be called always
 * when disabling plugin, but only when enabling/disabling part itself.
 **/

/* -------------------------------------------------------------------  */
/*                       Helper functions                               */
/* -------------------------------------------------------------------  */

static gboolean
is_part_enabled (const gchar *gconf_key)
{
    /* the part is enabled by defaul */
    gboolean res = TRUE;
    GConfClient *client;
    GConfValue  *is_key;

    client = gconf_client_get_default ();

    is_key = gconf_client_get (client, gconf_key, NULL);
    if (is_key) {
        res = gconf_client_get_bool (client, gconf_key, NULL);
        gconf_value_free (is_key);
    }

    g_object_unref (client);

    return res;
}

static void
set_part_enabled (const gchar *gconf_key, gboolean enable)
{
    GConfClient *client;

    client = gconf_client_get_default ();

    gconf_client_set_bool (client, gconf_key, enable, NULL);
    g_object_unref (client);
}

/* -------------------------------------------------------------------  */
/*                           DBUS part                                  */
/* -------------------------------------------------------------------  */

#ifdef HAVE_DBUS

#define DBUS_PATH       "/org/gnome/evolution/mail/newmail"
#define DBUS_INTERFACE      "org.gnome.evolution.mail.dbus.Signal"

static DBusConnection *bus = NULL;

static gboolean init_dbus (void);

static void
send_dbus_message (const char *name, const char *data, guint new)
{
    DBusMessage *message;

    /* Create a new message on the DBUS_INTERFACE */
    if (!(message = dbus_message_new_signal (DBUS_PATH, DBUS_INTERFACE, name)))
        return;

    /* Appends the data as an argument to the message */
    dbus_message_append_args (message,
#if FOUND_DBUS_VERSION >= 310
                  DBUS_TYPE_STRING, &data,
#else
                  DBUS_TYPE_STRING, data,
#endif
                  DBUS_TYPE_INVALID);

    if (new) {
        char * display_name = em_utils_folder_name_from_uri (data);
        dbus_message_append_args (message,
#if FOUND_DBUS_VERSION >= 310
                      DBUS_TYPE_STRING, &display_name, DBUS_TYPE_UINT32, &new,
#else
                      DBUS_TYPE_STRING, display_name, DBUS_TYPE_UINT32, new,
#endif
                      DBUS_TYPE_INVALID);

    }

    /* Sends the message */
    dbus_connection_send (bus, message, NULL);

    /* Frees the message */
    dbus_message_unref (message);
}

static gboolean
reinit_dbus (gpointer user_data)
{
    if (!enabled || init_dbus ())
        return FALSE;

    /* keep trying to re-establish dbus connection */
    return TRUE;
}

static DBusHandlerResult
filter_function (DBusConnection *connection, DBusMessage *message, void *user_data)
{
    if (dbus_message_is_signal (message, DBUS_INTERFACE_LOCAL, "Disconnected") &&
        strcmp (dbus_message_get_path (message), DBUS_PATH_LOCAL) == 0) {
        dbus_connection_unref (bus);
        bus = NULL;

        g_timeout_add (3000, reinit_dbus, NULL);

        return DBUS_HANDLER_RESULT_HANDLED;
    }

    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}

static gboolean
init_dbus (void)
{
    DBusError error;

    if (bus != NULL)
        return TRUE;

    dbus_error_init (&error);
    if (!(bus = dbus_bus_get (DBUS_BUS_SESSION, &error))) {
        g_warning ("could not get system bus: %s\n", error.message);
        dbus_error_free (&error);
        return FALSE;
    }

    dbus_connection_setup_with_g_main (bus, NULL);
    dbus_connection_set_exit_on_disconnect (bus, FALSE);

    dbus_connection_add_filter (bus, filter_function, NULL, NULL);

    return TRUE;
}

static void
toggled_dbus_cb (GtkWidget *widget, gpointer data)
{
    g_return_if_fail (widget != NULL);

    set_part_enabled (GCONF_KEY_ENABLED_DBUS, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
}

/* -------------------------------------------------------------------  */

static void
new_notify_dbus (EMEventTargetFolder *t)
{
    if (bus != NULL)
        send_dbus_message ("Newmail", t->uri, t->new);
}

static void
read_notify_dbus (EMEventTargetMessage *t)
{
    if (bus != NULL)
        send_dbus_message ("MessageReading", t->folder->name, 0);
}

static void
enable_dbus (int enable)
{
    if (enable) {
        /* we ignore errors here */
        init_dbus ();
    } else if (bus != NULL) {
        dbus_connection_unref (bus);
        bus = NULL;
    }
}

static GtkWidget *
get_config_widget_dbus (void)
{
    GtkWidget *w;

    w = gtk_check_button_new_with_mnemonic (_("Generate a _D-Bus message"));

    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (w), is_part_enabled (GCONF_KEY_ENABLED_DBUS));
    g_signal_connect (G_OBJECT (w), "toggled", G_CALLBACK (toggled_dbus_cb), NULL);
    gtk_widget_show (w);

    return w;
}

#endif

/* -------------------------------------------------------------------  */
/*                     Notification area part                           */
/* -------------------------------------------------------------------  */

#define GCONF_KEY_STATUS_BLINK      GCONF_KEY_ROOT "status-blink-icon"
#define GCONF_KEY_STATUS_NOTIFICATION   GCONF_KEY_ROOT "status-notification"

static GtkStatusIcon *status_icon = NULL;
static unsigned int status_count = 0;

#ifdef HAVE_LIBNOTIFY
static gboolean notification_callback (gpointer notify);
static NotifyNotification *notify = NULL;
#endif

static void
#ifdef HAVE_LIBNOTIFY
icon_activated (GtkStatusIcon *icon, NotifyNotification *pnotify)
#else
icon_activated (GtkStatusIcon *icon, gpointer pnotify)
#endif
{
    #ifdef HAVE_LIBNOTIFY
    if (notify)
        notify_notification_close (notify, NULL);

    notify = NULL;
    #endif

    gtk_status_icon_set_visible (status_icon, FALSE);
    g_object_unref (status_icon);

    status_icon = NULL;
    status_count = 0;
}

#ifdef HAVE_LIBNOTIFY
static gboolean
notification_callback (gpointer notify)
{
    return (!notify_notification_show (notify, NULL));
}
#endif

struct _StatusConfigureWidgets
{
    GtkWidget *enable;
    GtkWidget *blink;
    #ifdef HAVE_LIBNOTIFY
    GtkWidget *message;
    #endif
};

static void
toggled_status_cb (GtkWidget *widget, gpointer data)
{
    struct _StatusConfigureWidgets *scw = (struct _StatusConfigureWidgets *) data;
    gboolean enabl;

    g_return_if_fail (scw != NULL);
    g_return_if_fail (scw->enable != NULL);
    g_return_if_fail (scw->blink != NULL);
    #ifdef HAVE_LIBNOTIFY
    g_return_if_fail (scw->message != NULL);
    #endif

    enabl = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (scw->enable));
    if (widget == scw->enable)
        set_part_enabled (GCONF_KEY_ENABLED_STATUS, enabl);

    #define work_widget(w, key) \
        gtk_widget_set_sensitive (w, enabl); \
        if (widget == w) \
            set_part_enabled (key, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (w)));

    work_widget (scw->blink, GCONF_KEY_STATUS_BLINK);
    #ifdef HAVE_LIBNOTIFY
    work_widget (scw->message, GCONF_KEY_STATUS_NOTIFICATION);
    #endif

    #undef work_widget
}

/* -------------------------------------------------------------------  */

static void
do_properties (GtkMenuItem *item, gpointer user_data)
{
    GtkWidget *cfg, *dialog, *vbox, *label, *hbox;
    char *text;

    cfg = get_cfg_widget ();
    if (!cfg)
        return;

    text = g_strconcat ("<span size=\"x-large\">", _("Evolution's Mail Notification"), "</span>", NULL);

    vbox = gtk_vbox_new (FALSE, 10);
    label = gtk_label_new (NULL);
    gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
    gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
    gtk_label_set_markup (GTK_LABEL (label), text);
    g_free (text);

    gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
    gtk_widget_show (label);
    gtk_widget_show (vbox);

    hbox = gtk_hbox_new (FALSE, 10);
    label = gtk_label_new ("   ");
    gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
    gtk_widget_show_all (hbox);

    gtk_box_pack_start (GTK_BOX (hbox), cfg, TRUE, TRUE, 0);
    gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);

    dialog = gtk_dialog_new_with_buttons (_("Mail Notification Properties"),
                        NULL, 
                        GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, 
                        GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
                        NULL);

    gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
    gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), vbox);
    gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
    gtk_widget_set_size_request (dialog, 400, -1);
    g_signal_connect_swapped (dialog, "response",  G_CALLBACK (gtk_widget_destroy), dialog);
    gtk_widget_show (dialog);
}

static void
popup_menu_status (GtkStatusIcon *status_icon, guint button, guint activate_time, gpointer user_data)
{
    GtkMenu *menu;
    GtkWidget *item;

    menu = GTK_MENU (gtk_menu_new ());

    item = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLOSE, NULL);
    #ifdef HAVE_LIBNOTIFY
    g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (icon_activated), notify);
    #else
    g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (icon_activated), NULL);
    #endif
    gtk_widget_show (item);
    gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
    
    item = gtk_separator_menu_item_new ();
    gtk_widget_show (item);
    gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

    item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PROPERTIES, NULL);
    g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (do_properties), NULL);
    gtk_widget_show (item);
    gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

    g_object_ref_sink (menu);
    gtk_menu_popup (menu, NULL, NULL, NULL, NULL, button, activate_time);
    g_object_unref (menu);
}

static void
new_notify_status (EMEventTargetFolder *t)
{
    char *msg;

    if (!status_icon) {
        status_icon = gtk_status_icon_new ();
        gtk_status_icon_set_from_pixbuf (status_icon, e_icon_factory_get_icon ("mail-unread", E_ICON_SIZE_LARGE_TOOLBAR));
    }

    if (!status_count) {
        status_count = t->new;
        /* To translators: '%d' is the number of mails recieved and '%s' is the name of the folder*/
        msg = g_strdup_printf (ngettext ("You have received %d new message\nin %s.",
                         "You have received %d new messages\nin %s.",
                         status_count),status_count, t->name);
    } else {
        status_count += t->new;
        msg = g_strdup_printf (ngettext ("You have received %d new message.",
                         "You have received %d new messages.", status_count), status_count);
    }

    gtk_status_icon_set_tooltip (status_icon, msg);
    gtk_status_icon_set_visible (status_icon, TRUE);
    gtk_status_icon_set_blinking (status_icon, is_part_enabled (GCONF_KEY_STATUS_BLINK));

    #ifdef HAVE_LIBNOTIFY
    /* Now check whether we're supposed to send notifications */
    if (is_part_enabled (GCONF_KEY_STATUS_NOTIFICATION)) {
        if (notify) {
            notify_notification_update (notify, _("New email"), msg, "mail-unread");
        } else {
            if (!notify_init ("evolution-mail-notification"))
                fprintf (stderr,"notify init error");

            notify  = notify_notification_new (_("New email"), msg, "mail-unread", NULL);
            notify_notification_attach_to_status_icon (notify, status_icon);

            notify_notification_set_urgency (notify, NOTIFY_URGENCY_NORMAL);
            notify_notification_set_timeout (notify, NOTIFY_EXPIRES_DEFAULT);
            g_timeout_add (500, notification_callback, notify);
        }
    }
    #endif

    g_free (msg);

    #ifdef HAVE_LIBNOTIFY
    g_signal_connect (G_OBJECT (status_icon), "activate", G_CALLBACK (icon_activated), notify);
    #else
    g_signal_connect (G_OBJECT (status_icon), "activate", G_CALLBACK (icon_activated), NULL);
    #endif

    g_signal_connect (G_OBJECT (status_icon), "popup-menu", G_CALLBACK (popup_menu_status), NULL);
}

static void
read_notify_status (EMEventTargetMessage *t)
{
    if (!status_icon)
        return;

    #ifdef HAVE_LIBNOTIFY
    icon_activated (status_icon, notify);
    #else
    icon_activated (status_icon, NULL);
    #endif
}

static void
enable_status (int enable)
{
    /* this does nothing on enable, it's here just to be
       consistent with other parts of this plugin */
}

static GtkWidget *
get_config_widget_status (void)
{
    GtkWidget *vbox, *parent, *alignment;
    struct _StatusConfigureWidgets *scw;

    vbox = gtk_vbox_new (FALSE, 0);
    scw = g_malloc0 (sizeof (struct _StatusConfigureWidgets));

    #define create_check(c, key, desc)                          \
        c = gtk_check_button_new_with_mnemonic (desc);                  \
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c), is_part_enabled (key));    \
        gtk_box_pack_start (GTK_BOX (parent), c, FALSE, FALSE, 0);          \
        g_signal_connect (G_OBJECT (c), "toggled", G_CALLBACK (toggled_status_cb), scw);

    parent = vbox;
    create_check (scw->enable,     GCONF_KEY_ENABLED_STATUS,      _("Show icon in _notification area"));

    parent = gtk_vbox_new (FALSE, 0);
    create_check (scw->blink,      GCONF_KEY_STATUS_BLINK,        _("B_link icon in notification area"));
    #ifdef HAVE_LIBNOTIFY
    create_check (scw->message,    GCONF_KEY_STATUS_NOTIFICATION, _("Popup _message together with the icon"));
    #endif

    alignment = gtk_alignment_new (0.0, 0.0, 1.0, 1.0);
    gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 0, 0, 20, 0);
    gtk_container_add (GTK_CONTAINER (alignment), parent);
    gtk_box_pack_start (GTK_BOX (vbox), alignment, FALSE, FALSE, 0);

    #undef create_check

    /* to let structure free properly */
    g_object_set_data_full (G_OBJECT (vbox), "scw-data", scw, g_free);

    toggled_status_cb (NULL, scw);
    gtk_widget_show_all (vbox);

    return vbox;
}

/* -------------------------------------------------------------------  */
/*                         Sound part                                   */
/* -------------------------------------------------------------------  */

/* min no. seconds between newmail notifications */
#define NOTIFY_THROTTLE 30

#define GCONF_KEY_SOUND_BEEP        GCONF_KEY_ROOT "sound-beep"
#define GCONF_KEY_SOUND_FILE        GCONF_KEY_ROOT "sound-file"

static void
do_play_sound (gboolean beep, const gchar *file)
{
    if (beep)
        gdk_beep ();
    else if (!file || !*file)
        g_warning ("No file to play!");
    else
        gnome_sound_play (file);
}

struct _SoundConfigureWidgets
{
    GtkWidget *enable;
    GtkWidget *beep;
    GtkWidget *file;
    GtkWidget *label;
    GtkWidget *filechooser;
    GtkWidget *play;
};

static void
toggled_sound_cb (GtkWidget *widget, gpointer data)
{
    struct _SoundConfigureWidgets *scw = (struct _SoundConfigureWidgets *) data;
    gboolean enabl;

    g_return_if_fail (data != NULL);
    g_return_if_fail (scw->enable != NULL);
    g_return_if_fail (scw->beep != NULL);
    g_return_if_fail (scw->file != NULL);
    g_return_if_fail (scw->label != NULL);
    g_return_if_fail (scw->filechooser != NULL);
    g_return_if_fail (scw->play != NULL);

    enabl = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (scw->enable));
    if (widget == scw->enable)
        set_part_enabled (GCONF_KEY_ENABLED_SOUND, enabl);

    gtk_widget_set_sensitive (scw->beep, enabl);
    gtk_widget_set_sensitive (scw->file, enabl);
    gtk_widget_set_sensitive (scw->label, enabl);
    gtk_widget_set_sensitive (scw->filechooser, enabl && gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (scw->file)));
    gtk_widget_set_sensitive (scw->play, enabl);

    if (widget == scw->beep || widget == scw->file)
        set_part_enabled (GCONF_KEY_SOUND_BEEP, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (scw->beep)));
}

static void
sound_file_set_cb (GtkWidget *widget, gpointer data)
{
    gchar *file;
    GConfClient *client;

    g_return_if_fail (widget != NULL);

    client = gconf_client_get_default ();
    file = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));

    gconf_client_set_string (client, GCONF_KEY_SOUND_FILE, file ? file : "", NULL);

    g_object_unref (client);
    g_free (file);
}

static void
sound_play_cb (GtkWidget *widget, gpointer data)
{
    struct _SoundConfigureWidgets *scw = (struct _SoundConfigureWidgets *) data;
    gchar *file;

    g_return_if_fail (data != NULL);

    if (!gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (scw->enable)))
        return;

    file = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (scw->filechooser));
    do_play_sound (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (scw->beep)), file);
    g_free (file);
}

struct _SoundNotifyData {
    time_t last_notify;
    guint notify_idle_id;
};

static gboolean
sound_notify_idle_cb (gpointer user_data)
{
    gchar *file;
    GConfClient *client;
    struct _SoundNotifyData *data = (struct _SoundNotifyData *) user_data;

    g_return_val_if_fail (data != NULL, FALSE);

    client = gconf_client_get_default ();
    file = gconf_client_get_string (client, GCONF_KEY_SOUND_FILE, NULL);

    do_play_sound (is_part_enabled (GCONF_KEY_SOUND_BEEP), file);

    g_object_unref (client);
    g_free (file);

    time (&data->last_notify);

    data->notify_idle_id = 0;

    return FALSE;
}

/* -------------------------------------------------------------------  */

static void
new_notify_sound (EMEventTargetFolder *t)
{
    time_t last_newmail;
    static struct _SoundNotifyData data = {0, 0};

    time (&last_newmail);

    /* just put it to the idle queue */
    if (data.notify_idle_id == 0 && (last_newmail - data.last_notify >= NOTIFY_THROTTLE))
        data.notify_idle_id = g_idle_add_full (G_PRIORITY_LOW, sound_notify_idle_cb, &data, NULL);
}

static void
read_notify_sound (EMEventTargetMessage *t)
{
    /* we do nothing here */
}

static void
enable_sound (int enable)
{
    if (enable)
        gnome_sound_init ("localhost");
    else
        gnome_sound_shutdown ();
}

static GtkWidget *
get_config_widget_sound (void)
{
    GtkWidget *vbox, *alignment, *parent, *hbox;
    gchar *file;
    GConfClient *client;
    struct _SoundConfigureWidgets *scw;

    vbox = gtk_vbox_new (FALSE, 0);
    scw = g_malloc0 (sizeof (struct _SoundConfigureWidgets));

    scw->enable = gtk_check_button_new_with_mnemonic (_("_Play sound when new messages arrive"));
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (scw->enable), is_part_enabled (GCONF_KEY_ENABLED_SOUND));
    gtk_box_pack_start (GTK_BOX (vbox), scw->enable, FALSE, FALSE, 0);
    g_signal_connect (G_OBJECT (scw->enable), "toggled", G_CALLBACK (toggled_sound_cb), scw);

    parent = gtk_vbox_new (FALSE, 0);
    scw->beep = gtk_radio_button_new_with_mnemonic (NULL, _("_Beep"));
    scw->file = gtk_radio_button_new_with_mnemonic_from_widget (GTK_RADIO_BUTTON (scw->beep), _("Play _sound file"));

    if (is_part_enabled (GCONF_KEY_SOUND_BEEP))
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (scw->beep), TRUE);
    else
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (scw->file), TRUE);

    g_signal_connect (G_OBJECT (scw->beep), "toggled", G_CALLBACK (toggled_sound_cb), scw);
    g_signal_connect (G_OBJECT (scw->file), "toggled", G_CALLBACK (toggled_sound_cb), scw);

    hbox = gtk_hbox_new (FALSE, 0);
    scw->label = gtk_label_new_with_mnemonic (_("Specify _filename:"));
    scw->filechooser = gtk_file_chooser_button_new (_("Select sound file"), GTK_FILE_CHOOSER_ACTION_OPEN);
    scw->play = gtk_button_new_with_mnemonic (_("Pl_ay"));

    gtk_label_set_mnemonic_widget (GTK_LABEL (scw->label), scw->filechooser);
    gtk_button_set_image (GTK_BUTTON (scw->play), gtk_image_new_from_icon_name ("media-playback-start", GTK_ICON_SIZE_BUTTON));

    client = gconf_client_get_default ();
    file = gconf_client_get_string (client, GCONF_KEY_SOUND_FILE, NULL);

    if (file && *file)
        gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (scw->filechooser), file);

    g_object_unref (client);
    g_free (file);

    g_signal_connect (G_OBJECT (scw->filechooser), "file-set", G_CALLBACK (sound_file_set_cb), scw);
    g_signal_connect (G_OBJECT (scw->play), "clicked", G_CALLBACK (sound_play_cb), scw);

    gtk_box_pack_start (GTK_BOX (hbox), scw->label, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), scw->filechooser, TRUE, TRUE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), scw->play, FALSE, FALSE, 0);

    gtk_box_pack_start (GTK_BOX (parent), scw->beep, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (parent), scw->file, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (parent), hbox, FALSE, FALSE, 0);

    alignment = gtk_alignment_new (0.0, 0.0, 1.0, 1.0);
    gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 0, 0, 20, 0);
    gtk_container_add (GTK_CONTAINER (alignment), parent);
    gtk_box_pack_start (GTK_BOX (vbox), alignment, FALSE, FALSE, 0);

    /* to let structure free properly */
    g_object_set_data_full (G_OBJECT (vbox), "scw-data", scw, g_free);

    toggled_sound_cb (NULL, scw);
    gtk_widget_show_all (vbox);

    return vbox;
}

/* -------------------------------------------------------------------  */
/*                     Plugin itself part                               */
/* -------------------------------------------------------------------  */

static void
toggled_only_inbox_cb (GtkWidget *widget, gpointer data)
{
    g_return_if_fail (widget != NULL);

    set_part_enabled (GCONF_KEY_NOTIFY_ONLY_INBOX, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
}

static GtkWidget *
get_cfg_widget (void)
{
    GtkWidget *cfg, *vbox, *check;

    vbox = gtk_vbox_new (FALSE, 6);
    check = gtk_check_button_new_with_mnemonic (_("Notify new messages for _Inbox only"));

    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), is_part_enabled (GCONF_KEY_NOTIFY_ONLY_INBOX));
    g_signal_connect (G_OBJECT (check), "toggled", G_CALLBACK (toggled_only_inbox_cb), NULL);
    gtk_widget_show (check);
    gtk_box_pack_start (GTK_BOX (vbox), check, FALSE, FALSE, 0);

#ifdef HAVE_DBUS    
    cfg = get_config_widget_dbus ();
    if (cfg)
        gtk_box_pack_start (GTK_BOX (vbox), cfg, FALSE, FALSE, 0);
#endif 
    cfg = get_config_widget_status ();
    if (cfg)
        gtk_box_pack_start (GTK_BOX (vbox), cfg, FALSE, FALSE, 0);

    cfg = get_config_widget_sound ();
    if (cfg)
        gtk_box_pack_start (GTK_BOX (vbox), cfg, FALSE, FALSE, 0);

    gtk_widget_show (vbox);

    return vbox;
}

void org_gnome_mail_new_notify (EPlugin *ep, EMEventTargetFolder *t);
void org_gnome_mail_read_notify (EPlugin *ep, EMEventTargetMessage *t);

int e_plugin_lib_enable (EPluginLib *ep, int enable);
GtkWidget *e_plugin_lib_get_configure_widget (EPlugin *epl);

static GStaticMutex mlock = G_STATIC_MUTEX_INIT;

void
org_gnome_mail_new_notify (EPlugin *ep, EMEventTargetFolder *t)
{
    g_return_if_fail (t != NULL);

    if (!enabled || !t->new || (!t->is_inbox && is_part_enabled (GCONF_KEY_NOTIFY_ONLY_INBOX)))
        return;

    g_static_mutex_lock (&mlock);

#ifdef HAVE_DBUS    
    if (is_part_enabled (GCONF_KEY_ENABLED_DBUS))
        new_notify_dbus (t);
#endif
    if (is_part_enabled (GCONF_KEY_ENABLED_STATUS))
        new_notify_status (t);

    if (is_part_enabled (GCONF_KEY_ENABLED_SOUND))
        new_notify_sound (t);

    g_static_mutex_unlock (&mlock);
}

void
org_gnome_mail_read_notify (EPlugin *ep, EMEventTargetMessage *t)
{
    g_return_if_fail (t != NULL);

    if (!enabled)
        return;

    g_static_mutex_lock (&mlock);

#ifdef HAVE_DBUS
    if (is_part_enabled (GCONF_KEY_ENABLED_DBUS))
        read_notify_dbus (t);
#endif
    if (is_part_enabled (GCONF_KEY_ENABLED_STATUS))
        read_notify_status (t);

    if (is_part_enabled (GCONF_KEY_ENABLED_SOUND))
        read_notify_sound (t);

    g_static_mutex_unlock (&mlock);
}

int
e_plugin_lib_enable (EPluginLib *ep, int enable)
{
    if (enable) {
#ifdef HAVE_DBUS        
        if (is_part_enabled (GCONF_KEY_ENABLED_DBUS))
            enable_dbus (enable);
#endif
        if (is_part_enabled (GCONF_KEY_ENABLED_STATUS))
            enable_status (enable);

        if (is_part_enabled (GCONF_KEY_ENABLED_SOUND))
            enable_sound (enable);

        enabled = TRUE;
    } else {
#ifdef HAVE_DBUS
        enable_dbus (enable);
#endif 
        enable_status (enable);
        enable_sound (enable);

        enabled = FALSE;
    }

    return 0;
}

GtkWidget *
e_plugin_lib_get_configure_widget (EPlugin *epl)
{
    return get_cfg_widget ();
}