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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_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:
static FocusManager* spInstance;
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
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