Introduce com.sun.star.frame.theDesktop singleton.

Change-Id: I3d269609119149e289652f6bc106e6bd9061672d

framework/util/fwk.component

@@ -38,6 +38,7 @@
   </implementation>
   <implementation name="com.sun.star.comp.framework.Desktop">
     <service name="com.sun.star.frame.Desktop"/>
+    <singleton name="com.sun.star.frame.theDesktop"/>
   </implementation>
   <implementation name="com.sun.star.comp.framework.DocumentAcceleratorConfiguration"
       constructor="com_sun_star_comp_framework_DocumentAcceleratorConfiguration_get_implementation">

offapi/UnoApi_offapi.mk

@@ -201,6 +201,7 @@ $(eval $(call gb_UnoApi_add_idlfiles_nohdl,offapi,com/sun/star/frame,\
     TaskCreator \
 	UICommandDescription \
 	theAutoRecovery \
+	theDesktop \
 	theGlobalEventBroadcaster \
 	theUICommandDescription \
 ))

offapi/com/sun/star/frame/Desktop.idl

@@ -24,17 +24,13 @@
 
  module com {  module sun {  module star {  module frame {
 
-/** is the environment for components which can instantiate within frames
-
-    <p>
-    A desktop environment contains tasks with one or more frames
-    in which components can be loaded. The term "task" or naming a frame as a
-    "task frame" is not in any way related to any additional implemented
-    interfaces, it's  just because these frames use task windows.
-    </p>
+/**
+    A legacy (single-instance) service-variant of theDesktop singleton.
+
+    @deprecated Use theDesktop singleton instead.
  */
-published service Desktop : XDesktop2;
 
+published service Desktop : XDesktop2;
 
 }; }; }; };
 

offapi/com/sun/star/frame/theDesktop.idl

+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef __com_sun_star_frame_theDesktop_idl__
+#define __com_sun_star_frame_theDesktop_idl__
+
+#include <com/sun/star/frame/XDesktop2.idl>
+
+
+ module com {  module sun {  module star {  module frame {
+
+/** is the environment for components which can instantiate within frames
+
+    <p>
+    A desktop environment contains tasks with one or more frames
+    in which components can be loaded. The term "task" or naming a frame as a
+    "task frame" is not in any way related to any additional implemented
+    interfaces, it's  just because these frames use task windows.
+    </p>
+
+    Prior to LibreOffice 4.3, this singleton was only available as a
+    (single-instance) Desktop service.
+
+    @since LibreOffice 4.3
+ */
+published singleton theDesktop : XDesktop2;
+
+}; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */