diff options
Diffstat (limited to '')
-rw-r--r-- | sd/source/ui/slidesorter/inc/controller/SlsCurrentSlideManager.hxx | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/inc/controller/SlsCurrentSlideManager.hxx b/sd/source/ui/slidesorter/inc/controller/SlsCurrentSlideManager.hxx new file mode 100644 index 000000000..0c5b3b243 --- /dev/null +++ b/sd/source/ui/slidesorter/inc/controller/SlsCurrentSlideManager.hxx @@ -0,0 +1,112 @@ +/* -*- 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: */ |