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Diffstat (limited to 'include/svx/IAccessibleViewForwarderListener.hxx')
-rw-r--r-- | include/svx/IAccessibleViewForwarderListener.hxx | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/include/svx/IAccessibleViewForwarderListener.hxx b/include/svx/IAccessibleViewForwarderListener.hxx new file mode 100644 index 000000000000..8a9a061bfb5e --- /dev/null +++ b/include/svx/IAccessibleViewForwarderListener.hxx @@ -0,0 +1,70 @@ +/* -*- 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 _SVX_ACCESSIBILITY_IACCESSIBLE_VIEW_FORWARDER_LISTENER_HXX +#define _SVX_ACCESSIBILITY_IACCESSIBLE_VIEW_FORWARDER_LISTENER_HXX + +#include <sal/types.h> + + +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: */ |