/* -*- 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_SD_SOURCE_UI_SLIDESORTER_INC_CONTROLLER_SLSCURRENTSLIDEMANAGER_HXX #define INCLUDED_SD_SOURCE_UI_SLIDESORTER_INC_CONTROLLER_SLSCURRENTSLIDEMANAGER_HXX #include "model/SlsSharedPageDescriptor.hxx" #include #include #include class SdPage; namespace sd { namespace slidesorter { class SlideSorter; } } namespace sd { namespace slidesorter { namespace 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). @param bUpdateSelection When then the page selection is cleared and only the new current slide is selected. */ void SwitchCurrentSlide ( const sal_Int32 nSlideIndex, const bool bUpdateSelection = false); 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. */ model::SharedPageDescriptor GetCurrentSlide() { 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; bool IsCurrentSlideIsValid(); 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_TYPED(SwitchPageCallback, Timer*, void); }; } } } // end of namespace ::sd::slidesorter::controller #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */