libmate-panel-applet: Register 'Activate' DBus method

This in turn emits an 'activate' signal that any applet can connect to
and perform whatever action it means to activate in that applet.

This allows users to control certain applet functionalities through
DBus, like registering new keybindings, or integrating them with other
software.

1 files changed, 28 insertions, 0 deletions

diff --git a/libmate-panel-applet/mate-panel-applet.c b/libmate-panel-applet/mate-panel-applet.c
index 897f1726..a4118165 100644
--- a/libmate-panel-applet/mate-panel-applet.c
+++ b/libmate-panel-applet/mate-panel-applet.c
@@ -94,6 +94,7 @@ enum {
 	CHANGE_SIZE,
 	CHANGE_BACKGROUND,
 	MOVE_FOCUS_OUT_OF_APPLET,
+	ACTIVATE,
 	LAST_SIGNAL
 };
 
@@ -2150,6 +2151,19 @@ mate_panel_applet_class_init (MatePanelAppletClass *klass)
 			      1,
 			      GTK_TYPE_DIRECTION_TYPE);
 
+	mate_panel_applet_signals [ACTIVATE] =
+		g_signal_new ("activate",
+			      G_TYPE_FROM_CLASS (klass),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (MatePanelAppletClass, activate),
+			      g_signal_accumulator_true_handled,
+			      NULL,
+			      NULL,
+			      G_TYPE_BOOLEAN,
+			      2,
+			      G_TYPE_STRING,
+			      G_TYPE_UINT);
+
 	binding_set = gtk_binding_set_by_class (gobject_class);
 	add_tab_bindings (binding_set, 0, GTK_DIR_TAB_FORWARD);
 	add_tab_bindings (binding_set, GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
@@ -2213,6 +2227,15 @@ method_call_cb (GDBusConnection       *connection,
 		gdk_event_free (event);
 
 		g_dbus_method_invocation_return_value (invocation, NULL);
+	} else if (g_strcmp0 (method_name, "Activate") == 0) {
+		const gchar *action;
+		guint32 timestamp;
+		gboolean success = FALSE;
+
+		g_variant_get (parameters, "(&su)", &action, &timestamp);
+
+		g_signal_emit_by_name (applet, "activate", action, timestamp, &success);
+		g_dbus_method_invocation_return_value (invocation, g_variant_new ("(b)", success));
 	}
 }
 
@@ -2303,6 +2326,11 @@ static const gchar introspection_xml[] =
 	      "<arg name='button' type='u' direction='in'/>"
 	      "<arg name='time' type='u' direction='in'/>"
 	    "</method>"
+	    "<method name='Activate'>"
+	      "<arg name='action' type='s' direction='in'/>"
+	      "<arg name='timestamp' type='u' direction='in'/>"
+	      "<arg name='success' type='b' direction='out'/>"
+	    "</method>"
 	    "<property name='PrefsPath' type='s' access='readwrite'/>"
 	    "<property name='Orient' type='u' access='readwrite' />"
 	    "<property name='Size' type='u' access='readwrite'/>"