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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 .
*/
#pragma once
#include <model/SlsSharedPageDescriptor.hxx>
#include <vcl/timer.hxx>
#include <tools/link.hxx>
class SdPage;
namespace sd::slidesorter
{
class SlideSorter;
}
namespace sd::slidesorter::controller
{
/** Manage the current slide. This includes setting the according flags at
the PageDescriptor objects and setting the current slide at the main
view shell.
Switching pages is triggered only after a little delay. This allows
fast travelling through a larger set of slides without having to wait
for the edit view to update its content after every slide change.
*/
class CurrentSlideManager
{
public:
/** Create a new CurrentSlideManager object that manages the current
slide for the given SlideSorter.
*/
CurrentSlideManager(SlideSorter& rSlideSorter);
~CurrentSlideManager();
/** Call this when the current page of the main view shell has been
switched. Use SwitchCurrentSlide() to initiate such a switch.
*/
void NotifyCurrentSlideChange(const sal_Int32 nSlideIndex);
void NotifyCurrentSlideChange(const SdPage* pPage);
/** Call this method to switch the current page of the main view shell
to the given slide. Use CurrentSlideHasChanged() when the current
slide change has been initiated by someone else.
@param nSlideIndex
Zero based index in the range [0,number-of-slides).
The page selection is cleared and only the new
current slide is selected.
*/
void SwitchCurrentSlide(const sal_Int32 nSlideIndex);
void SwitchCurrentSlide(const model::SharedPageDescriptor& rpSlide,
const bool bUpdateSelection = false);
/** Return the page descriptor for the current slide. Note, that when
there is no current slide then the returned pointer is empty.
*/
const model::SharedPageDescriptor& GetCurrentSlide() const { return mpCurrentSlide; }
/** Release all references to model data.
*/
void PrepareModelChange();
/** Modify inner state in reaction to a change of the SlideSorterModel.
*/
void HandleModelChange();
private:
SlideSorter& mrSlideSorter;
sal_Int32 mnCurrentSlideIndex;
model::SharedPageDescriptor mpCurrentSlide;
/** Timer to control the delay after which to ask
XController/ViewShellBase to switch to another slide.
*/
Timer maSwitchPageDelayTimer;
void SetCurrentSlideAtViewShellBase(const model::SharedPageDescriptor& rpSlide);
void SetCurrentSlideAtTabControl(const model::SharedPageDescriptor& rpSlide);
void SetCurrentSlideAtXController(const model::SharedPageDescriptor& rpSlide);
/** When switching from one slide to a new current slide then this
method releases all ties to the old slide.
*/
void ReleaseCurrentSlide();
/** When switching from one slide to a new current slide then this
method connects to the new current slide.
*/
void AcquireCurrentSlide(const sal_Int32 nSlideIndex);
DECL_LINK(SwitchPageCallback, Timer*, void);
};
} // end of namespace ::sd::slidesorter::controller
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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