sd/source/core/PageListWatcher.hxx

   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 #pragma once
  21
  22 #include <pres.hxx>
  23 #include <sal/types.h>
  24 #include <vector>
  25
  26 class SdPage;
  27 class SdrModel;
  28
  29 /** Maintain a map of page indices to page objects for faster access that
  30     remains valid during deletions and insertions of pages (#109538#).
  31 */
  32 class ImpPageListWatcher
  33 {
  34 protected:
  35     // typedefs for a vector of SdPages
  36     typedef ::std::vector< SdPage* > SdPageVector;
  37
  38     const SdrModel&                 mrModel;
  39
  40     SdPageVector                    maPageVectorStandard;
  41     SdPageVector                    maPageVectorNotes;
  42     SdPage*                         mpHandoutPage;
  43
  44     bool                        mbPageListValid;
  45
  46     void ImpRecreateSortedPageListOnDemand();
  47     virtual sal_uInt32 ImpGetPageCount() const = 0;
  48
  49     /** Return the page with the given index.
  50         @param nIndex
  51             When given an invalid index then NULL is returned.
  52     */
  53     virtual SdPage* ImpGetPage (sal_uInt32 nIndex) const = 0;
  54
  55 public:
  56     explicit ImpPageListWatcher(const SdrModel& rModel);
  57     virtual ~ImpPageListWatcher();
  58
  59     void Invalidate() { mbPageListValid = false; }
  60     SdPage* GetSdPage(PageKind ePgKind, sal_uInt32 nPgNum);
  61     sal_uInt32 GetSdPageCount(PageKind ePgKind);
  62     sal_uInt32 GetVisibleSdPageCount() const;
  63 };
  64
  65 class ImpDrawPageListWatcher : public ImpPageListWatcher
  66 {
  67 protected:
  68     virtual sal_uInt32 ImpGetPageCount() const override;
  69     virtual SdPage* ImpGetPage(sal_uInt32 nIndex) const override;
  70
  71 public:
  72     explicit ImpDrawPageListWatcher(const SdrModel& rModel);
  73     virtual ~ImpDrawPageListWatcher() override;
  74 };
  75
  76 class ImpMasterPageListWatcher : public ImpPageListWatcher
  77 {
  78 protected:
  79     virtual sal_uInt32 ImpGetPageCount() const override;
  80     virtual SdPage* ImpGetPage(sal_uInt32 nIndex) const override;
  81
  82 public:
  83     explicit ImpMasterPageListWatcher(const SdrModel& rModel);
  84     virtual ~ImpMasterPageListWatcher() override;
  85 };
  86
  87 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */