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+/* -*- 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 SD_TOOLPANEL_FOCUS_MANAGER_HXX
+#define SD_TOOLPANEL_FOCUS_MANAGER_HXX
+
+#include <tools/link.hxx>
+
+#include <memory>
+
+class KeyCode;
+class VclSimpleEvent;
+class Window;
+
+namespace sd { namespace toolpanel {
+
+/** On certain key presses the focus is moved from one window to another.
+ For this to work every window that wants its focus managed has to
+ register or be registered and tell where to put the focus on what key
+ press.
+*/
+class FocusManager
+{
+public:
+ /** Return an instance of the focus manager.
+ */
+ static FocusManager& Instance (void);
+
+ /** Register a link from one window to another so that any time the
+ specified key is pressed while the source window is focused, the
+ focus is transferred to the target window.
+ @param pSource
+ The window from which the focus will be transferred.
+ @param pTarget
+ The window to which the focus will be transferred.
+ @param rKey
+ The key for which the focus is transferred from the source
+ window to the target window.
+ */
+ void RegisterLink (
+ ::Window* pSource,
+ ::Window* pTarget,
+ const KeyCode& rKey);
+
+ /** Register a link that will move the focus from the source window to
+ the target window when the source window is focused and KEY_ESCAPE
+ is pressed.
+ @param pSource
+ The window from which the focus will be transferred.
+ @param pTarget
+ The window to which the focus will be transferred.
+ */
+ void RegisterUpLink (::Window* pSource, ::Window* pTarget);
+
+ /** Register a link that will move the focus from the source window to
+ the target window when the source window is focused and KEY_RETURN
+ is pressed.
+ @param pSource
+ The window from which the focus will be transferred.
+ @param pTarget
+ The window to which the focus will be transferred.
+ */
+ void RegisterDownLink (::Window* pSource, ::Window* pTarget);
+
+ /** Remove all links from the source window to the target window. When
+ there are links from the target window to the source window then
+ these are not touced.
+ */
+ void RemoveLinks (
+ ::Window* pSource,
+ ::Window* pTarget);
+
+ /** Let the focus manager transfer the focus from the specified source
+ window to a target window that is determined according the the
+ registered links and the given key code.
+ When there is no rule for this combination of source window and key
+ code then the focus stays where it is.
+ */
+ bool TransferFocus (::Window* pSource, const KeyCode& rCode);
+
+private:
+ class LinkMap;
+ ::std::auto_ptr<LinkMap> mpLinks;
+
+ FocusManager (void);
+ ~FocusManager (void);
+
+ /** Clear the list of focus transfer links. This removes all window
+ listeners.
+ */
+ void Clear (void);
+
+ /** Remove all links from or to the given window.
+ */
+ void RemoveLinks (::Window* pWindow);
+
+ /** Unregister as event listener from the given window when there are no
+ links from this window anymore.
+ */
+ void RemoveUnusedEventListener (::Window* pWindow);
+
+ /** Listen for key events and on KEY_RETURN go down and on
+ KEY_ESCAPE go up.
+ */
+ DECL_LINK(WindowEventListener, VclSimpleEvent*);
+};
+
+} } // end of namespace ::sd::toolpanel
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */