Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 90 insertions, 0 deletions

diff --git a/svx/source/accessibility/AccessibleTextEventQueue.hxx b/svx/source/accessibility/AccessibleTextEventQueue.hxx
new file mode 100644
index 000000000..23dbf9faa
--- /dev/null
+++ b/svx/source/accessibility/AccessibleTextEventQueue.hxx
@@ -0,0 +1,90 @@
+/* -*- 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 INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLETEXTEVENTQUEUE_HXX
+#define INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLETEXTEVENTQUEUE_HXX
+
+#include <memory>
+#include <deque>
+#include <algorithm>
+
+class SfxHint;
+class SdrHint;
+class TextHint;
+class SvxViewChangedHint;
+class SvxEditSourceHint;
+
+namespace accessibility
+{
+    /** This class handles the notification events for the
+        AccessibleTextHelper class.
+
+        For various reasons, we cannot process EditEngine events as
+        they arrive, but have to queue and handle them in a batch.
+     */
+    class AccessibleTextEventQueue
+    {
+    public:
+        typedef ::std::deque< SfxHint* > EventQueue;
+
+        AccessibleTextEventQueue();
+        ~AccessibleTextEventQueue();
+
+        /// Append event to end of queue
+        void Append( const SdrHint& rHint );
+        /// Append event to end of queue
+        void Append( const TextHint& rHint );
+        /// Append event to end of queue
+        void Append( const SvxViewChangedHint& rHint );
+        /// Append event to end of queue
+        void Append( const SvxEditSourceHint& rHint );
+
+        /** Pop first queue element
+
+            return first queue element, ownership transfers to caller
+        */
+        ::std::unique_ptr< SfxHint > PopFront();
+
+        /** Apply functor to every queue member
+
+            @param rFunctor
+            Functor to apply. Functor receives queue element as
+            parameter: void func( const SfxHint* );
+        */
+        template < typename Functor > void ForEach( Functor& rFunctor ) const
+        {
+            // #109864# Make sure results are put back into rFunctor
+            rFunctor = ::std::for_each( maEventQueue.begin(), maEventQueue.end(), rFunctor );
+        }
+
+        /// Query whether queue is empty
+        bool IsEmpty() const;
+
+        /// Clear event queue
+        void Clear();
+
+    private:
+        EventQueue maEventQueue;
+    };
+
+} // end of namespace accessibility
+
+#endif // INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLETEXTEVENTQUEUE_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */