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/* -*- 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_SLIDESHOW_SOURCE_INC_VIEWEVENTHANDLER_HXX
#define INCLUDED_SLIDESHOW_SOURCE_INC_VIEWEVENTHANDLER_HXX
#include <memory>
#include "unoview.hxx"
#include "disposable.hxx"
/* Definition of ViewEventHandler interface */
namespace slideshow::internal
{
/** Interface for handling view events.
Classes implementing this interface can be added to an
EventMultiplexer object, and are called from there to
handle view events.
*/
class ViewEventHandler : public virtual SharedPtrAble
{
public:
/** Notify new view.
@param rView
The newly added view
*/
virtual void viewAdded( const UnoViewSharedPtr& rView ) = 0;
/** Notify removed view.
@param rView
The removed view
*/
virtual void viewRemoved( const UnoViewSharedPtr& rView ) = 0;
/** Notify changed view.
Reasons for a viewChanged notification can be
different view size, transformation, or other device
properties (color resolution or profile, etc.)
@param rView
The changed view
*/
virtual void viewChanged( const UnoViewSharedPtr& rView ) = 0;
/** Notify that all views changed.
Reasons for a viewChanged notification can be
different view size, transformation, or other device
properties (color resolution or profile, etc.)
Note that this method avoids hidden inefficiencies
(O(n^2) behaviour when viewChanged() needs to perform
linear searches)
*/
virtual void viewsChanged() = 0;
};
typedef ::std::weak_ptr< ViewEventHandler > ViewEventHandlerWeakPtr;
}
#endif // INCLUDED_SLIDESHOW_SOURCE_INC_VIEWEVENTHANDLER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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