moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 550 insertions, 0 deletions

diff --git a/mate-session/gsm-presence.c b/mate-session/gsm-presence.c
new file mode 100644
index 0000000..dc179c0
--- /dev/null
+++ b/mate-session/gsm-presence.c
@@ -0,0 +1,550 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2009 Red Hat, Inc.
+ *
+ * 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
+ * Lesser 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 <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <dbus/dbus-glib.h>
+
+#include "gs-idle-monitor.h"
+
+#include "gsm-presence.h"
+#include "gsm-presence-glue.h"
+
+#define GSM_PRESENCE_DBUS_PATH "/org/mate/SessionManager/Presence"
+
+#define GS_NAME      "org.mate.ScreenSaver"
+#define GS_PATH      "/org/mate/ScreenSaver"
+#define GS_INTERFACE "org.mate.ScreenSaver"
+
+#define MAX_STATUS_TEXT 140
+
+#define IS_STRING_EMPTY(x) ((x)==NULL||(x)[0]=='\0')
+
+#define GSM_PRESENCE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GSM_TYPE_PRESENCE, GsmPresencePrivate))
+
+struct GsmPresencePrivate
+{
+        guint            status;
+        guint            saved_status;
+        char            *status_text;
+        gboolean         idle_enabled;
+        GSIdleMonitor   *idle_monitor;
+        guint            idle_watch_id;
+        guint            idle_timeout;
+        gboolean         screensaver_active;
+        DBusGConnection *bus_connection;
+        DBusGProxy      *bus_proxy;
+        DBusGProxy      *screensaver_proxy;
+};
+
+enum {
+        PROP_0,
+        PROP_STATUS,
+        PROP_STATUS_TEXT,
+        PROP_IDLE_ENABLED,
+        PROP_IDLE_TIMEOUT,
+};
+
+
+enum {
+        STATUS_CHANGED,
+        STATUS_TEXT_CHANGED,
+        LAST_SIGNAL
+};
+
+static guint signals [LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (GsmPresence, gsm_presence, G_TYPE_OBJECT)
+
+GQuark
+gsm_presence_error_quark (void)
+{
+        static GQuark ret = 0;
+        if (ret == 0) {
+                ret = g_quark_from_static_string ("gsm_presence_error");
+        }
+
+        return ret;
+}
+
+#define ENUM_ENTRY(NAME, DESC) { NAME, "" #NAME "", DESC }
+
+GType
+gsm_presence_error_get_type (void)
+{
+        static GType etype = 0;
+
+        if (etype == 0) {
+                static const GEnumValue values[] = {
+                        ENUM_ENTRY (GSM_PRESENCE_ERROR_GENERAL, "GeneralError"),
+                        { 0, 0, 0 }
+                };
+
+                g_assert (GSM_PRESENCE_NUM_ERRORS == G_N_ELEMENTS (values) - 1);
+
+                etype = g_enum_register_static ("GsmPresenceError", values);
+        }
+
+        return etype;
+}
+
+static void
+set_session_idle (GsmPresence   *presence,
+                  gboolean       is_idle)
+{
+        g_debug ("GsmPresence: setting idle: %d", is_idle);
+
+        if (is_idle) {
+                if (presence->priv->status == GSM_PRESENCE_STATUS_IDLE) {
+                        g_debug ("GsmPresence: already idle, ignoring");
+                        return;
+                }
+
+                /* save current status */
+                presence->priv->saved_status = presence->priv->status;
+                gsm_presence_set_status (presence, GSM_PRESENCE_STATUS_IDLE, NULL);
+        } else {
+                if (presence->priv->status != GSM_PRESENCE_STATUS_IDLE) {
+                        g_debug ("GsmPresence: already not idle, ignoring");
+                        return;
+                }
+
+                /* restore saved status */
+                gsm_presence_set_status (presence, presence->priv->saved_status, NULL);
+                presence->priv->saved_status = GSM_PRESENCE_STATUS_AVAILABLE;
+        }
+}
+
+static gboolean
+on_idle_timeout (GSIdleMonitor *monitor,
+                 guint          id,
+                 gboolean       condition,
+                 GsmPresence   *presence)
+{
+        gboolean handled;
+
+        handled = TRUE;
+        set_session_idle (presence, condition);
+
+        return handled;
+}
+
+static void
+reset_idle_watch (GsmPresence  *presence)
+{
+        if (presence->priv->idle_monitor == NULL) {
+                return;
+        }
+
+        if (presence->priv->idle_watch_id > 0) {
+                g_debug ("GsmPresence: removing idle watch");
+                gs_idle_monitor_remove_watch (presence->priv->idle_monitor,
+                                              presence->priv->idle_watch_id);
+                presence->priv->idle_watch_id = 0;
+        }
+
+        if (! presence->priv->screensaver_active
+            && presence->priv->idle_enabled) {
+                g_debug ("GsmPresence: adding idle watch");
+
+                presence->priv->idle_watch_id = gs_idle_monitor_add_watch (presence->priv->idle_monitor,
+                                                                           presence->priv->idle_timeout,
+                                                                           (GSIdleMonitorWatchFunc)on_idle_timeout,
+                                                                           presence);
+        }
+}
+
+static void
+on_screensaver_active_changed (DBusGProxy  *proxy,
+                               gboolean     is_active,
+                               GsmPresence *presence)
+{
+        g_debug ("screensaver status changed: %d", is_active);
+        if (presence->priv->screensaver_active != is_active) {
+                presence->priv->screensaver_active = is_active;
+                reset_idle_watch (presence);
+                set_session_idle (presence, is_active);
+        }
+}
+
+static void
+on_screensaver_proxy_destroy (GObject     *proxy,
+                              GsmPresence *presence)
+{
+        g_warning ("Detected that screensaver has left the bus");
+
+        presence->priv->screensaver_proxy = NULL;
+        presence->priv->screensaver_active = FALSE;
+        set_session_idle (presence, FALSE);
+        reset_idle_watch (presence);
+}
+
+static void
+on_bus_name_owner_changed (DBusGProxy  *bus_proxy,
+                           const char  *service_name,
+                           const char  *old_service_name,
+                           const char  *new_service_name,
+                           GsmPresence *presence)
+{
+        GError *error;
+
+        if (service_name == NULL
+            || strcmp (service_name, GS_NAME) != 0) {
+                /* ignore */
+                return;
+        }
+
+        if (strlen (new_service_name) == 0
+            && strlen (old_service_name) > 0) {
+                /* service removed */
+                /* let destroy signal handle this? */
+        } else if (strlen (old_service_name) == 0
+                   && strlen (new_service_name) > 0) {
+                /* service added */
+                error = NULL;
+                presence->priv->screensaver_proxy = dbus_g_proxy_new_for_name_owner (presence->priv->bus_connection,
+                                                                                     GS_NAME,
+                                                                                     GS_PATH,
+                                                                                     GS_INTERFACE,
+                                                                                     &error);
+                if (presence->priv->screensaver_proxy != NULL) {
+                        g_signal_connect (presence->priv->screensaver_proxy,
+                                          "destroy",
+                                          G_CALLBACK (on_screensaver_proxy_destroy),
+                                          presence);
+                        dbus_g_proxy_add_signal (presence->priv->screensaver_proxy,
+                                                 "ActiveChanged",
+                                                 G_TYPE_BOOLEAN,
+                                                 G_TYPE_INVALID);
+                        dbus_g_proxy_connect_signal (presence->priv->screensaver_proxy,
+                                                     "ActiveChanged",
+                                                     G_CALLBACK (on_screensaver_active_changed),
+                                                     presence,
+                                                     NULL);
+                } else {
+                        g_warning ("Unable to get screensaver proxy: %s", error->message);
+                        g_error_free (error);
+                }
+        }
+}
+
+static gboolean
+register_presence (GsmPresence *presence)
+{
+        GError *error;
+
+        error = NULL;
+        presence->priv->bus_connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
+        if (presence->priv->bus_connection == NULL) {
+                if (error != NULL) {
+                        g_critical ("error getting session bus: %s", error->message);
+                        g_error_free (error);
+                }
+                return FALSE;
+        }
+
+        dbus_g_connection_register_g_object (presence->priv->bus_connection, GSM_PRESENCE_DBUS_PATH, G_OBJECT (presence));
+
+        return TRUE;
+}
+
+static GObject *
+gsm_presence_constructor (GType                  type,
+                          guint                  n_construct_properties,
+                          GObjectConstructParam *construct_properties)
+{
+        GsmPresence *presence;
+        gboolean     res;
+
+        presence = GSM_PRESENCE (G_OBJECT_CLASS (gsm_presence_parent_class)->constructor (type,
+                                                                                             n_construct_properties,
+                                                                                             construct_properties));
+
+        res = register_presence (presence);
+        if (! res) {
+                g_warning ("Unable to register presence with session bus");
+        }
+
+        presence->priv->bus_proxy = dbus_g_proxy_new_for_name (presence->priv->bus_connection,
+                                                               DBUS_SERVICE_DBUS,
+                                                               DBUS_PATH_DBUS,
+                                                               DBUS_INTERFACE_DBUS);
+        if (presence->priv->bus_proxy != NULL) {
+                dbus_g_proxy_add_signal (presence->priv->bus_proxy,
+                                         "NameOwnerChanged",
+                                         G_TYPE_STRING,
+                                         G_TYPE_STRING,
+                                         G_TYPE_STRING,
+                                         G_TYPE_INVALID);
+                dbus_g_proxy_connect_signal (presence->priv->bus_proxy,
+                                             "NameOwnerChanged",
+                                             G_CALLBACK (on_bus_name_owner_changed),
+                                             presence,
+                                             NULL);
+        }
+
+        return G_OBJECT (presence);
+}
+
+static void
+gsm_presence_init (GsmPresence *presence)
+{
+        presence->priv = GSM_PRESENCE_GET_PRIVATE (presence);
+
+        presence->priv->idle_monitor = gs_idle_monitor_new ();
+}
+
+void
+gsm_presence_set_idle_enabled (GsmPresence  *presence,
+                               gboolean      enabled)
+{
+        g_return_if_fail (GSM_IS_PRESENCE (presence));
+
+        if (presence->priv->idle_enabled != enabled) {
+                presence->priv->idle_enabled = enabled;
+                reset_idle_watch (presence);
+                g_object_notify (G_OBJECT (presence), "idle-enabled");
+
+        }
+}
+
+gboolean
+gsm_presence_set_status_text (GsmPresence  *presence,
+                              const char   *status_text,
+                              GError      **error)
+{
+        g_return_val_if_fail (GSM_IS_PRESENCE (presence), FALSE);
+
+        g_free (presence->priv->status_text);
+
+        /* check length */
+        if (status_text != NULL && strlen (status_text) > MAX_STATUS_TEXT) {
+                g_set_error (error,
+                             GSM_PRESENCE_ERROR,
+                             GSM_PRESENCE_ERROR_GENERAL,
+                             "Status text too long");
+                return FALSE;
+        }
+
+        if (status_text != NULL) {
+                presence->priv->status_text = g_strdup (status_text);
+        } else {
+                presence->priv->status_text = g_strdup ("");
+        }
+        g_object_notify (G_OBJECT (presence), "status-text");
+        g_signal_emit (presence, signals[STATUS_TEXT_CHANGED], 0, presence->priv->status_text);
+        return TRUE;
+}
+
+gboolean
+gsm_presence_set_status (GsmPresence  *presence,
+                         guint         status,
+                         GError      **error)
+{
+        g_return_val_if_fail (GSM_IS_PRESENCE (presence), FALSE);
+
+        if (status != presence->priv->status) {
+                presence->priv->status = status;
+                g_object_notify (G_OBJECT (presence), "status");
+                g_signal_emit (presence, signals[STATUS_CHANGED], 0, presence->priv->status);
+        }
+        return TRUE;
+}
+
+void
+gsm_presence_set_idle_timeout (GsmPresence  *presence,
+                               guint         timeout)
+{
+        g_return_if_fail (GSM_IS_PRESENCE (presence));
+
+        if (timeout != presence->priv->idle_timeout) {
+                presence->priv->idle_timeout = timeout;
+                reset_idle_watch (presence);
+                g_object_notify (G_OBJECT (presence), "idle-timeout");
+        }
+}
+
+static void
+gsm_presence_set_property (GObject       *object,
+                           guint          prop_id,
+                           const GValue  *value,
+                           GParamSpec    *pspec)
+{
+        GsmPresence *self;
+
+        self = GSM_PRESENCE (object);
+
+        switch (prop_id) {
+        case PROP_STATUS:
+                gsm_presence_set_status (self, g_value_get_uint (value), NULL);
+                break;
+        case PROP_STATUS_TEXT:
+                gsm_presence_set_status_text (self, g_value_get_string (value), NULL);
+                break;
+        case PROP_IDLE_ENABLED:
+                gsm_presence_set_idle_enabled (self, g_value_get_boolean (value));
+                break;
+        case PROP_IDLE_TIMEOUT:
+                gsm_presence_set_idle_timeout (self, g_value_get_uint (value));
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gsm_presence_get_property (GObject    *object,
+                           guint       prop_id,
+                           GValue     *value,
+                           GParamSpec *pspec)
+{
+        GsmPresence *self;
+
+        self = GSM_PRESENCE (object);
+
+        switch (prop_id) {
+        case PROP_STATUS:
+                g_value_set_uint (value, self->priv->status);
+                break;
+        case PROP_STATUS_TEXT:
+                g_value_set_string (value, self->priv->status_text);
+                break;
+        case PROP_IDLE_ENABLED:
+                g_value_set_boolean (value, self->priv->idle_enabled);
+                break;
+        case PROP_IDLE_TIMEOUT:
+                g_value_set_uint (value, self->priv->idle_timeout);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gsm_presence_finalize (GObject *object)
+{
+        GsmPresence *presence = (GsmPresence *) object;
+
+        if (presence->priv->idle_watch_id > 0) {
+                gs_idle_monitor_remove_watch (presence->priv->idle_monitor,
+                                              presence->priv->idle_watch_id);
+                presence->priv->idle_watch_id = 0;
+        }
+
+        if (presence->priv->status_text != NULL) {
+                g_free (presence->priv->status_text);
+                presence->priv->status_text = NULL;
+        }
+
+        if (presence->priv->idle_monitor != NULL) {
+                g_object_unref (presence->priv->idle_monitor);
+                presence->priv->idle_monitor = NULL;
+        }
+
+        G_OBJECT_CLASS (gsm_presence_parent_class)->finalize (object);
+}
+
+static void
+gsm_presence_class_init (GsmPresenceClass *klass)
+{
+        GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+        object_class->finalize             = gsm_presence_finalize;
+        object_class->constructor          = gsm_presence_constructor;
+        object_class->get_property         = gsm_presence_get_property;
+        object_class->set_property         = gsm_presence_set_property;
+
+        signals [STATUS_CHANGED] =
+                g_signal_new ("status-changed",
+                              G_TYPE_FROM_CLASS (object_class),
+                              G_SIGNAL_RUN_LAST,
+                              G_STRUCT_OFFSET (GsmPresenceClass, status_changed),
+                              NULL,
+                              NULL,
+                              g_cclosure_marshal_VOID__UINT,
+                              G_TYPE_NONE,
+                              1, G_TYPE_UINT);
+        signals [STATUS_TEXT_CHANGED] =
+                g_signal_new ("status-text-changed",
+                              G_TYPE_FROM_CLASS (object_class),
+                              G_SIGNAL_RUN_LAST,
+                              G_STRUCT_OFFSET (GsmPresenceClass, status_text_changed),
+                              NULL,
+                              NULL,
+                              g_cclosure_marshal_VOID__STRING,
+                              G_TYPE_NONE,
+                              1, G_TYPE_STRING);
+
+        g_object_class_install_property (object_class,
+                                         PROP_STATUS,
+                                         g_param_spec_uint ("status",
+                                                            "status",
+                                                            "status",
+                                                            0,
+                                                            G_MAXINT,
+                                                            0,
+                                                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+        g_object_class_install_property (object_class,
+                                         PROP_STATUS_TEXT,
+                                         g_param_spec_string ("status-text",
+                                                              "status text",
+                                                              "status text",
+                                                              "",
+                                                              G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+        g_object_class_install_property (object_class,
+                                         PROP_IDLE_ENABLED,
+                                         g_param_spec_boolean ("idle-enabled",
+                                                               NULL,
+                                                               NULL,
+                                                               FALSE,
+                                                               G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+        g_object_class_install_property (object_class,
+                                         PROP_IDLE_TIMEOUT,
+                                         g_param_spec_uint ("idle-timeout",
+                                                            "idle timeout",
+                                                            "idle timeout",
+                                                            0,
+                                                            G_MAXINT,
+                                                            300000,
+                                                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+        dbus_g_object_type_install_info (GSM_TYPE_PRESENCE, &dbus_glib_gsm_presence_object_info);
+        dbus_g_error_domain_register (GSM_PRESENCE_ERROR, NULL, GSM_PRESENCE_TYPE_ERROR);
+        g_type_class_add_private (klass, sizeof (GsmPresencePrivate));
+}
+
+GsmPresence *
+gsm_presence_new (void)
+{
+        GsmPresence *presence;
+
+        presence = g_object_new (GSM_TYPE_PRESENCE,
+                                 NULL);
+
+        return presence;
+}