sd/source/ui/slidesorter/controller/SlsSelectionObserver.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <SlideSorter.hxx>
  21 #include <controller/SlideSorterController.hxx>
  22 #include <controller/SlsSelectionManager.hxx>
  23 #include <controller/SlsSelectionObserver.hxx>
  24 #include <controller/SlsPageSelector.hxx>
  25 #include <controller/SlsFocusManager.hxx>
  26 #include <model/SlideSorterModel.hxx>
  27 #include <model/SlsPageDescriptor.hxx>
  28 #include <svx/svdmodel.hxx>
  29 #include <drawdoc.hxx>
  30 #include <sdpage.hxx>
  31
  32 namespace sd { namespace slidesorter { namespace controller {
  33
  34 SelectionObserver::Context::Context (SlideSorter const & rSlideSorter)
  35     : mpSelectionObserver(
  36         rSlideSorter.GetController().GetSelectionManager()->GetSelectionObserver())
  37 {
  38     if (mpSelectionObserver)
  39         mpSelectionObserver->StartObservation();
  40 }
  41
  42 SelectionObserver::Context::~Context() COVERITY_NOEXCEPT_FALSE
  43 {
  44     if (mpSelectionObserver)
  45         mpSelectionObserver->EndObservation();
  46 }
  47
  48 void SelectionObserver::Context::Abort()
  49 {
  50     if (mpSelectionObserver)
  51     {
  52         mpSelectionObserver->AbortObservation();
  53         mpSelectionObserver.reset();
  54     }
  55 }
  56
  57 //===== SelectionObserver =====================================================
  58
  59 SelectionObserver::SelectionObserver (SlideSorter& rSlideSorter)
  60     : mrSlideSorter(rSlideSorter)
  61     , mbIsObservationActive(false)
  62     , mbPageEventOccurred(false)
  63     , maInsertedPages()
  64 {
  65 }
  66
  67 SelectionObserver::~SelectionObserver()
  68 {
  69 }
  70
  71 void SelectionObserver::NotifyPageEvent (const SdrPage* pSdrPage)
  72 {
  73     if (!mbIsObservationActive)
  74         return;
  75
  76     mbPageEventOccurred = true;
  77
  78     const SdPage* pPage = dynamic_cast<const SdPage*>(pSdrPage);
  79     if (pPage == nullptr)
  80         return;
  81
  82     //NotifyPageEvent is called for add, remove, *and* change position so for
  83     //the change position case we must ensure we don't end up with the slide
  84     //duplicated in our list
  85     std::vector<const SdPage*>::iterator iPage(
  86         std::find(maInsertedPages.begin(), maInsertedPages.end(), pPage));
  87     if (iPage != maInsertedPages.end())
  88         maInsertedPages.erase(iPage);
  89
  90     if (pPage->IsInserted())
  91         maInsertedPages.push_back(pPage);
  92 }
  93
  94 void SelectionObserver::StartObservation()
  95 {
  96     OSL_ASSERT(!mbIsObservationActive);
  97     maInsertedPages.clear();
  98     mbIsObservationActive = true;
  99 }
 100
 101 void SelectionObserver::AbortObservation()
 102 {
 103     OSL_ASSERT(mbIsObservationActive);
 104     mbIsObservationActive = false;
 105     maInsertedPages.clear();
 106 }
 107
 108 void SelectionObserver::EndObservation()
 109 {
 110     OSL_ASSERT(mbIsObservationActive);
 111     mbIsObservationActive = false;
 112
 113     if (!mbPageEventOccurred)
 114         return;
 115
 116     PageSelector& rSelector (mrSlideSorter.GetController().GetPageSelector());
 117     PageSelector::UpdateLock aUpdateLock (mrSlideSorter);
 118     rSelector.DeselectAllPages();
 119     if ( ! maInsertedPages.empty())
 120     {
 121         // Select the inserted pages.
 122         for (const auto& rpPage : maInsertedPages)
 123         {
 124             rSelector.SelectPage(rpPage);
 125         }
 126         maInsertedPages.clear();
 127     }
 128
 129     aUpdateLock.Release();
 130     mrSlideSorter.GetController().GetFocusManager().SetFocusedPageToCurrentPage();
 131
 132 }
 133
 134 } } } // end of namespace ::sd::slidesorter::controller
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */