add two bits of data that session applications really want -- battery mode and low battery mode

3 files changed, 113 insertions, 0 deletions

diff --git a/src/devkit-power-daemon.c b/src/devkit-power-daemon.c
index ea9d869..06a423d 100644
--- a/src/devkit-power-daemon.c
+++ b/src/devkit-power-daemon.c
@@ -44,6 +44,8 @@ enum
         DEVICE_ADDED_SIGNAL,
         DEVICE_REMOVED_SIGNAL,
         DEVICE_CHANGED_SIGNAL,
+        ON_BATTERY_CHANGED_SIGNAL,
+        LOW_BATTERY_CHANGED_SIGNAL,
         LAST_SIGNAL,
 };
 
@@ -57,6 +59,8 @@ struct DevkitPowerDaemonPrivate
         PolKitTracker     *pk_tracker;
 
         GHashTable        *map_native_path_to_device;
+        gboolean           on_battery;
+        gboolean           low_battery;
 
         DevkitClient      *devkit_client;
 };
@@ -161,6 +165,24 @@ devkit_power_daemon_class_init (DevkitPowerDaemonClass *klass)
                               g_cclosure_marshal_VOID__STRING,
                               G_TYPE_NONE, 1, G_TYPE_STRING);
 
+        signals[ON_BATTERY_CHANGED_SIGNAL] =
+                g_signal_new ("on-battery-changed",
+                              G_OBJECT_CLASS_TYPE (klass),
+                              G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+                              0,
+                              NULL, NULL,
+                              g_cclosure_marshal_VOID__BOOLEAN,
+                              G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
+
+        signals[LOW_BATTERY_CHANGED_SIGNAL] =
+                g_signal_new ("low-battery-changed",
+                              G_OBJECT_CLASS_TYPE (klass),
+                              G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+                              0,
+                              NULL, NULL,
+                              g_cclosure_marshal_VOID__BOOLEAN,
+                              G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
+
         dbus_g_object_type_install_info (DEVKIT_TYPE_POWER_DAEMON, &dbus_glib_devkit_power_daemon_object_info);
 
         dbus_g_error_domain_register (DEVKIT_POWER_DAEMON_ERROR,
@@ -172,6 +194,8 @@ static void
 devkit_power_daemon_init (DevkitPowerDaemon *daemon)
 {
         daemon->priv = DEVKIT_POWER_DAEMON_GET_PRIVATE (daemon);
+        daemon->priv->on_battery = FALSE;
+        daemon->priv->low_battery = FALSE;
         daemon->priv->map_native_path_to_device = g_hash_table_new_full (g_str_hash,
                                                                          g_str_equal,
                                                                          g_free,
@@ -366,6 +390,10 @@ device_remove (DevkitPowerDaemon *daemon, DevkitDevice *d)
         }
 }
 
+//TODO: hook into the devices
+//g_signal_emit (daemon, signals[ON_BATTERY_CHANGED_SIGNAL], 0, FALSE);
+//g_signal_emit (daemon, signals[LOW_BATTERY_CHANGED_SIGNAL], 0, FALSE);
+
 static void
 device_event_signal_handler (DevkitClient *client,
                              const char   *action,
@@ -631,6 +659,24 @@ devkit_power_daemon_enumerate_devices (DevkitPowerDaemon     *daemon,
 }
 
 gboolean
+devkit_power_daemon_get_on_battery (DevkitPowerDaemon     *daemon,
+                                    DBusGMethodInvocation *context)
+{
+        /* this is cached as it's expensive to check all sources */
+        dbus_g_method_return (context, daemon->priv->on_battery);
+        return TRUE;
+}
+
+gboolean
+devkit_power_daemon_get_low_battery (DevkitPowerDaemon     *daemon,
+                                     DBusGMethodInvocation *context)
+{
+        /* this is cached as it's expensive to check all sources */
+        dbus_g_method_return (context, daemon->priv->low_battery);
+        return TRUE;
+}
+
+gboolean
 devkit_power_daemon_suspend (DevkitPowerDaemon *daemon, DBusGMethodInvocation *context)
 {
         gboolean ret;
diff --git a/src/devkit-power-daemon.h b/src/devkit-power-daemon.h
index cb8b2a4..63987f5 100644
--- a/src/devkit-power-daemon.h
+++ b/src/devkit-power-daemon.h
@@ -78,6 +78,10 @@ gboolean      devkit_power_damon_local_check_auth (DevkitPowerDaemon     *daemon
 
 gboolean devkit_power_daemon_enumerate_devices (DevkitPowerDaemon     *daemon,
                                                 DBusGMethodInvocation *context);
+gboolean devkit_power_daemon_get_on_battery (DevkitPowerDaemon     *daemon,
+                                             DBusGMethodInvocation *context);
+gboolean devkit_power_daemon_get_low_battery (DevkitPowerDaemon     *daemon,
+                                              DBusGMethodInvocation *context);
 gboolean devkit_power_daemon_suspend (DevkitPowerDaemon     *daemon,
                                       DBusGMethodInvocation *context);
 gboolean devkit_power_daemon_hibernate (DevkitPowerDaemon     *daemon,
diff --git a/src/org.freedesktop.DeviceKit.Power.xml b/src/org.freedesktop.DeviceKit.Power.xml
index 7227c4e..48a96e2 100644
--- a/src/org.freedesktop.DeviceKit.Power.xml
+++ b/src/org.freedesktop.DeviceKit.Power.xml
@@ -71,6 +71,69 @@
     </signal>
 
     <!-- ************************************************************ -->
+    <signal name="OnBatteryChanged">
+      <arg name="on_battery" type="b">
+        <doc:doc><doc:summary>If we are on battery power.</doc:summary></doc:doc>
+      </arg>
+
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            Emitted when the main power source of the system has changed.
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </signal>
+
+    <!-- ************************************************************ -->
+    <signal name="LowBatteryChanged">
+      <arg name="low_battery" type="b">
+        <doc:doc><doc:summary>If we are critically low on battery power.</doc:summary></doc:doc>
+      </arg>
+
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            Emitted when the main power source of the system is critically low in power.
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </signal>
+
+    <!-- ************************************************************ -->
+    <method name="GetOnBattery">
+      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+      <arg name="on_battery" type="b">
+        <doc:doc><doc:summary>If we are on battery power.</doc:summary></doc:doc>
+      </arg>
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            Finds out if we are using battery so we can make policy decisions,
+            for instance not running the indexer when we are on battery power.
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </method>
+
+    <!-- ************************************************************ -->
+    <method name="GetLowBattery">
+      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+      <arg name="low_battery" type="b">
+        <doc:doc><doc:summary>If we are critically low on battery power.</doc:summary></doc:doc>
+      </arg>
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            Finds out if we are critically low on battery so we can make policy
+            decisions, for instance saving documents or turning off network
+            connections.
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </method>
+
+    <!-- ************************************************************ -->
 
     <method name="Suspend">
       <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>