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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 _SVX_ACCESSIBILITY_IACCESSIBLE_VIEW_FORWARDER_LISTENER_HXX
#define _SVX_ACCESSIBILITY_IACCESSIBLE_VIEW_FORWARDER_LISTENER_HXX
#include <sal/types.h>
#include <tools/gen.hxx>
namespace accessibility {
class IAccessibleViewForwarder;
/** <p>The purpose of this interface is to notify a user of an
IAccessibleViewForwarder when that view forwarder changes its
properties. Such a change may be one of the following:
<ul>
<li>Change of the coordinate transformation.</li>
<li>Change of the visible area (which in turn results in a change of the
coordinate transformation.</li>
<li>Change of the validity state of the view forwarder.</li>
*/
class IAccessibleViewForwarderListener
{
public:
/** Enumeration of the different change types.
*/
enum ChangeType {TRANSFORMATION, VISIBLE_AREA, STATE};
/** This method is called to indicate a change of the specified view
forwarder.
@param aChangeType
The type of the change. TRANSFORMATION indicates a change of
the coordinate transformation with a constant visible area. If
the visible area changes, just use VISIBLE_AREA. This changes
the transformation implicitly. The value STATE indicates a
change of the validity state. Check the IsValid method of the
view forwarder before doing further calls.
@param pViewForwarder
The modified view forwarder. It is specified just in case that
there is more than one view forwarder in use at the same time.
*/
virtual void ViewForwarderChanged (ChangeType aChangeType,
const IAccessibleViewForwarder* pViewForwarder) = 0;
protected:
~IAccessibleViewForwarderListener() {}
};
} // end of namespace accessibility
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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