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diff --git a/desktop/source/deployment/gui/dp_gui_extensioncmdqueue.hxx b/desktop/source/deployment/gui/dp_gui_extensioncmdqueue.hxx
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@@ -0,0 +1,114 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_DP_GUI_EXTENSIONCMDQUEUE_HXX
+#define INCLUDED_DP_GUI_EXTENSIONCMDQUEUE_HXX
+
+#include "sal/config.h"
+
+#include "com/sun/star/uno/Reference.hxx"
+#include "rtl/ref.hxx"
+
+#include <vector>
+
+#include "dp_gui_updatedata.hxx"
+
+/// @HTML
+
+namespace com { namespace sun { namespace star {
+    namespace task { class XInteractionRequest; }
+    namespace uno { class XComponentContext; }
+} } }
+
+namespace dp_gui {
+
+class DialogHelper;
+class TheExtensionManager;
+
+/**
+   Manages installing of extensions in the GUI mode. Requests for installing
+   Extensions can be asynchronous. For example, the Extension Manager is running
+   in an office process and someone uses the system integration to install an Extension.
+   That is, the user double clicks an extension symbol in a file browser, which then
+   causes an invocation of "unopkg gui ext". When at that time the Extension Manager
+   already performs a task, triggered by the user (for example, add, update, disable,
+   enable) then adding of the extension will be postponed until the user has finished
+   the task.
+
+   This class also ensures that the extensions are not installed in the main thread.
+   Doing so would cause a deadlock because of the progress bar which needs to be constantly
+   updated.
+*/
+class ExtensionCmdQueue {
+
+public:
+    /**
+       Create an instance.
+    */
+    ExtensionCmdQueue( DialogHelper * pDialogHelper,
+                       TheExtensionManager *pManager,
+                       const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > & rContext);
+
+    ~ExtensionCmdQueue();
+
+    /**
+    */
+    void addExtension( const ::rtl::OUString &rExtensionURL,
+                       const ::rtl::OUString &rRepository,
+                       const bool bWarnUser );
+    void removeExtension( const ::com::sun::star::uno::Reference< ::com::sun::star::deployment::XPackage > &rPackage );
+    void enableExtension( const ::com::sun::star::uno::Reference< ::com::sun::star::deployment::XPackage > &rPackage,
+                          const bool bEnable );
+    void checkForUpdates(const std::vector< ::com::sun::star::uno::Reference<
+                         ::com::sun::star::deployment::XPackage > > &vList );
+    void acceptLicense( const ::com::sun::star::uno::Reference< ::com::sun::star::deployment::XPackage > &rPackage );
+    static void syncRepositories( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > & xContext );
+    /**
+       This call does not block. It signals the internal thread
+       that it should install the remaining extensions and then terminate.
+    */
+    void stop();
+
+    bool isBusy();
+private:
+    ExtensionCmdQueue(ExtensionCmdQueue &); // not defined
+    void operator =(ExtensionCmdQueue &); // not defined
+
+    class Thread;
+
+    rtl::Reference< Thread > m_thread;
+};
+
+void handleInteractionRequest( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > & xContext,
+                               const ::com::sun::star::uno::Reference< ::com::sun::star::task::XInteractionRequest > & xRequest );
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */