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+/*************************************************************************
+ *
+ * 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 SD_ASYNCHRONOUS_CALL_HXX
+#define SD_ASYNCHRONOUS_CALL_HXX
+
+#include <vcl/timer.hxx>
+#include <memory>
+#include <boost/function.hpp>
+
+namespace sd { namespace tools {
+
+
+/** Store a function object and execute it asynchronous.
+
+    The features of this class are:
+    a) It provides a wrapper around a VCL Timer so that generic function
+    objects can be used.
+    b) When more than one function objects are posted to be executed later
+    then the pending ones are erased and only the last one will actually be
+    executed.
+
+    Use this class like this:
+    aInstanceOfAsynchronousCall.Post(
+        ::boost::bind(
+            ::std::mem_fun(&DrawViewShell::SwitchPage),
+            pDrawViewShell,
+            11));
+*/
+class AsynchronousCall
+{
+public:
+    /** Create a new asynchronous call.  Each object of this class processes
+        one (semantical) type of call.
+    */
+    AsynchronousCall (void);
+
+    ~AsynchronousCall (void);
+
+    /** Post a function object that is to be executed asynchronously.  When
+        this method is called while the current function object has not bee
+        executed then the later is destroyed and only the given function
+        object will be executed.
+        @param rFunction
+            The function object that may be called asynchronously in the
+            near future.
+        @param nTimeoutInMilliseconds
+            The timeout in milliseconds until the function object is
+            executed.
+    */
+    typedef ::boost::function0<void> AsynchronousFunction;
+    void Post (
+        const AsynchronousFunction& rFunction,
+        sal_uInt32 nTimeoutInMilliseconds=10);
+
+private:
+    Timer maTimer;
+    /** The function object that will be executed when the TimerCallback
+        function is called the next time.  This pointer may be NULL.
+    */
+    ::std::auto_ptr<AsynchronousFunction> mpFunction;
+    DECL_LINK(TimerCallback,Timer*);
+};
+
+
+} } // end of namespace ::sd::tools
+
+#endif