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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2004-2006 William Jon McCann <mccann@jhu.edu>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Authors: William Jon McCann <mccann@jhu.edu>
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <glib.h>
#include <glib-object.h>
#include "gnome-screensaver.h"
#include "gs-manager.h"
#include "gs-watcher.h"
#include "gs-fade.h"
#include "gs-grab.h"
#include "gs-listener-dbus.h"
#include "gs-monitor.h"
#include "gs-prefs.h"
#include "gs-debug.h"
static void gs_monitor_class_init (GSMonitorClass *klass);
static void gs_monitor_init (GSMonitor *monitor);
static void gs_monitor_finalize (GObject *object);
#define GS_MONITOR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GS_TYPE_MONITOR, GSMonitorPrivate))
struct GSMonitorPrivate
{
GSWatcher *watcher;
GSListener *listener;
GSManager *manager;
GSPrefs *prefs;
GSFade *fade;
GSGrab *grab;
guint release_grab_id;
};
#define FADE_TIMEOUT 10000
G_DEFINE_TYPE (GSMonitor, gs_monitor, G_TYPE_OBJECT)
static void
gs_monitor_class_init (GSMonitorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gs_monitor_finalize;
g_type_class_add_private (klass, sizeof (GSMonitorPrivate));
}
static void
manager_activated_cb (GSManager *manager,
GSMonitor *monitor)
{
}
static void
manager_deactivated_cb (GSManager *manager,
GSMonitor *monitor)
{
gs_listener_set_active (monitor->priv->listener, FALSE);
}
static gboolean
watcher_idle_cb (GSWatcher *watcher,
gboolean is_idle,
GSMonitor *monitor)
{
gboolean res;
gs_debug ("Idle signal detected: %d", is_idle);
res = gs_listener_set_session_idle (monitor->priv->listener, is_idle);
return res;
}
static gboolean
release_grab_timeout (GSMonitor *monitor)
{
gboolean manager_active;
manager_active = gs_manager_get_active (monitor->priv->manager);
if (! manager_active) {
gs_grab_release (monitor->priv->grab);
}
monitor->priv->release_grab_id = 0;
return FALSE;
}
static gboolean
watcher_idle_notice_cb (GSWatcher *watcher,
gboolean in_effect,
GSMonitor *monitor)
{
gboolean activation_enabled;
gboolean handled;
gs_debug ("Idle notice signal detected: %d", in_effect);
/* only fade if screensaver can activate */
activation_enabled = gs_listener_get_activation_enabled (monitor->priv->listener);
handled = FALSE;
if (in_effect) {
if (activation_enabled) {
/* start slow fade */
if (gs_grab_grab_offscreen (monitor->priv->grab, FALSE)) {
gs_fade_async (monitor->priv->fade, FADE_TIMEOUT, NULL, NULL);
} else {
gs_debug ("Could not grab the keyboard so not performing idle warning fade-out");
}
handled = TRUE;
}
} else {
gboolean manager_active;
manager_active = gs_manager_get_active (monitor->priv->manager);
/* cancel the fade unless manager was activated */
if (! manager_active) {
gs_debug ("manager not active, performing fade cancellation");
gs_fade_reset (monitor->priv->fade);
/* don't release the grab immediately to prevent typing passwords into windows */
if (monitor->priv->release_grab_id != 0) {
g_source_remove (monitor->priv->release_grab_id);
}
monitor->priv->release_grab_id = g_timeout_add (1000, (GSourceFunc)release_grab_timeout, monitor);
} else {
gs_debug ("manager active, skipping fade cancellation");
}
handled = TRUE;
}
return handled;
}
static void
gs_monitor_lock_screen (GSMonitor *monitor)
{
gboolean res;
gboolean locked;
gboolean active;
/* set lock flag before trying to activate screensaver
in case something tries to react to the ActiveChanged signal */
gs_manager_get_lock_active (monitor->priv->manager, &locked);
gs_manager_set_lock_active (monitor->priv->manager, TRUE);
active = gs_manager_get_active (monitor->priv->manager);
if (! active) {
res = gs_listener_set_active (monitor->priv->listener, TRUE);
if (! res) {
/* If we've failed then restore lock status */
gs_manager_set_lock_active (monitor->priv->manager, locked);
gs_debug ("Unable to lock the screen");
}
}
}
static void
gs_monitor_simulate_user_activity (GSMonitor *monitor)
{
/* FIXME: reset the xsync timer? */
/* request that the manager unlock -
will pop up a dialog if necessary */
gs_manager_request_unlock (monitor->priv->manager);
}
static void
listener_lock_cb (GSListener *listener,
GSMonitor *monitor)
{
if (! monitor->priv->prefs->lock_disabled) {
gs_monitor_lock_screen (monitor);
} else {
gs_debug ("Locking disabled by the administrator");
}
}
static void
listener_config_lock_cb (GSListener *listener,
GSMonitor *monitor)
{
if (! monitor->priv->prefs->lock_disabled) {
gs_debug ("Locking the screen suspend");
gs_monitor_lock_screen (monitor);
} else {
gs_debug ("Locking disabled by the administrator");
}
}
static void
listener_quit_cb (GSListener *listener,
GSMonitor *monitor)
{
gs_listener_set_active (monitor->priv->listener, FALSE);
gnome_screensaver_quit ();
}
static void
listener_show_message_cb (GSListener *listener,
const char *summary,
const char *body,
const char *icon,
GSMonitor *monitor)
{
gs_manager_show_message (monitor->priv->manager,
summary,
body,
icon);
}
static gboolean
listener_active_changed_cb (GSListener *listener,
gboolean active,
GSMonitor *monitor)
{
gboolean res;
gboolean ret;
gboolean idle_watch_enabled;
res = gs_manager_set_active (monitor->priv->manager, active);
if (! res) {
gs_debug ("Unable to set manager active: %d", active);
ret = FALSE;
goto done;
}
ret = TRUE;
done:
idle_watch_enabled = gs_watcher_get_enabled (monitor->priv->watcher);
if (ret && idle_watch_enabled) {
res = gs_watcher_set_active (monitor->priv->watcher, !active);
if (! res) {
gs_debug ("Unable to set the idle watcher active: %d", !active);
}
}
return ret;
}
static void
listener_simulate_user_activity_cb (GSListener *listener,
GSMonitor *monitor)
{
gs_monitor_simulate_user_activity (monitor);
}
static void
_gs_monitor_update_from_prefs (GSMonitor *monitor,
GSPrefs *prefs)
{
gboolean idle_detection_enabled;
gboolean idle_detection_active;
gboolean activate_watch;
gboolean manager_active;
gboolean lock_enabled;
gboolean user_switch_enabled;
lock_enabled = (monitor->priv->prefs->lock_enabled && !monitor->priv->prefs->lock_disabled);
user_switch_enabled = (monitor->priv->prefs->user_switch_enabled && !monitor->priv->prefs->user_switch_disabled);
gs_manager_set_lock_enabled (monitor->priv->manager, lock_enabled);
gs_manager_set_lock_timeout (monitor->priv->manager, monitor->priv->prefs->lock_timeout);
gs_manager_set_logout_enabled (monitor->priv->manager, monitor->priv->prefs->logout_enabled);
gs_manager_set_user_switch_enabled (monitor->priv->manager, user_switch_enabled);
gs_manager_set_keyboard_enabled (monitor->priv->manager, monitor->priv->prefs->keyboard_enabled);
gs_manager_set_logout_timeout (monitor->priv->manager, monitor->priv->prefs->logout_timeout);
gs_manager_set_logout_command (monitor->priv->manager, monitor->priv->prefs->logout_command);
gs_manager_set_keyboard_command (monitor->priv->manager, monitor->priv->prefs->keyboard_command);
/* enable activation when allowed */
gs_listener_set_activation_enabled (monitor->priv->listener,
monitor->priv->prefs->idle_activation_enabled);
/* idle detection always enabled */
idle_detection_enabled = TRUE;
gs_watcher_set_enabled (monitor->priv->watcher, idle_detection_enabled);
/* in the case where idle detection is reenabled we may need to
activate the watcher too */
manager_active = gs_manager_get_active (monitor->priv->manager);
idle_detection_active = gs_watcher_get_active (monitor->priv->watcher);
activate_watch = (! manager_active
&& ! idle_detection_active
&& idle_detection_enabled);
if (activate_watch) {
gs_watcher_set_active (monitor->priv->watcher, TRUE);
}
if (monitor->priv->prefs->status_message_enabled) {
char *text;
g_object_get (monitor->priv->watcher,
"status-message", &text,
NULL);
gs_manager_set_status_message (monitor->priv->manager, text);
g_free (text);
} else {
gs_manager_set_status_message (monitor->priv->manager, NULL);
}
}
static void
disconnect_listener_signals (GSMonitor *monitor)
{
g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_lock_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_config_lock_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_quit_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_active_changed_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_simulate_user_activity_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->listener, listener_show_message_cb, monitor);
}
static void
connect_listener_signals (GSMonitor *monitor)
{
g_signal_connect (monitor->priv->listener, "lock",
G_CALLBACK (listener_lock_cb), monitor);
g_signal_connect (monitor->priv->listener, "config-lock",
G_CALLBACK (listener_config_lock_cb), monitor);
g_signal_connect (monitor->priv->listener, "quit",
G_CALLBACK (listener_quit_cb), monitor);
g_signal_connect (monitor->priv->listener, "active-changed",
G_CALLBACK (listener_active_changed_cb), monitor);
g_signal_connect (monitor->priv->listener, "simulate-user-activity",
G_CALLBACK (listener_simulate_user_activity_cb), monitor);
g_signal_connect (monitor->priv->listener, "show-message",
G_CALLBACK (listener_show_message_cb), monitor);
}
static void
on_watcher_status_message_changed (GSWatcher *watcher,
GParamSpec *pspec,
GSMonitor *monitor)
{
char *text;
g_object_get (watcher, "status-message", &text, NULL);
gs_manager_set_status_message (monitor->priv->manager, text);
g_free (text);
}
static void
disconnect_watcher_signals (GSMonitor *monitor)
{
g_signal_handlers_disconnect_by_func (monitor->priv->watcher, watcher_idle_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->watcher, watcher_idle_notice_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->watcher, on_watcher_status_message_changed, monitor);
}
static void
connect_watcher_signals (GSMonitor *monitor)
{
g_signal_connect (monitor->priv->watcher, "idle-changed",
G_CALLBACK (watcher_idle_cb), monitor);
g_signal_connect (monitor->priv->watcher, "idle-notice-changed",
G_CALLBACK (watcher_idle_notice_cb), monitor);
g_signal_connect (monitor->priv->watcher, "notify::status-message",
G_CALLBACK (on_watcher_status_message_changed), monitor);
}
static void
disconnect_manager_signals (GSMonitor *monitor)
{
g_signal_handlers_disconnect_by_func (monitor->priv->manager, manager_activated_cb, monitor);
g_signal_handlers_disconnect_by_func (monitor->priv->manager, manager_deactivated_cb, monitor);
}
static void
connect_manager_signals (GSMonitor *monitor)
{
g_signal_connect (monitor->priv->manager, "activated",
G_CALLBACK (manager_activated_cb), monitor);
g_signal_connect (monitor->priv->manager, "deactivated",
G_CALLBACK (manager_deactivated_cb), monitor);
}
static void
disconnect_prefs_signals (GSMonitor *monitor)
{
g_signal_handlers_disconnect_by_func (monitor->priv->prefs, _gs_monitor_update_from_prefs, monitor);
}
static void
connect_prefs_signals (GSMonitor *monitor)
{
g_signal_connect_swapped (monitor->priv->prefs, "changed",
G_CALLBACK (_gs_monitor_update_from_prefs), monitor);
}
static void
gs_monitor_init (GSMonitor *monitor)
{
monitor->priv = GS_MONITOR_GET_PRIVATE (monitor);
monitor->priv->prefs = gs_prefs_new ();
connect_prefs_signals (monitor);
monitor->priv->listener = gs_listener_new ();
connect_listener_signals (monitor);
monitor->priv->fade = gs_fade_new ();
monitor->priv->grab = gs_grab_new ();
monitor->priv->watcher = gs_watcher_new ();
connect_watcher_signals (monitor);
monitor->priv->manager = gs_manager_new ();
connect_manager_signals (monitor);
_gs_monitor_update_from_prefs (monitor, monitor->priv->prefs);
}
static void
gs_monitor_finalize (GObject *object)
{
GSMonitor *monitor;
g_return_if_fail (object != NULL);
g_return_if_fail (GS_IS_MONITOR (object));
monitor = GS_MONITOR (object);
g_return_if_fail (monitor->priv != NULL);
disconnect_watcher_signals (monitor);
disconnect_listener_signals (monitor);
disconnect_manager_signals (monitor);
disconnect_prefs_signals (monitor);
g_object_unref (monitor->priv->fade);
g_object_unref (monitor->priv->grab);
g_object_unref (monitor->priv->watcher);
g_object_unref (monitor->priv->listener);
g_object_unref (monitor->priv->manager);
g_object_unref (monitor->priv->prefs);
G_OBJECT_CLASS (gs_monitor_parent_class)->finalize (object);
}
GSMonitor *
gs_monitor_new (void)
{
GSMonitor *monitor;
monitor = g_object_new (GS_TYPE_MONITOR, NULL);
return GS_MONITOR (monitor);
}
gboolean
gs_monitor_start (GSMonitor *monitor,
GError **error)
{
g_return_val_if_fail (GS_IS_MONITOR (monitor), FALSE);
if (! gs_listener_acquire (monitor->priv->listener, error)) {
return FALSE;
}
return TRUE;
}
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