sw/inc/HandleAnchorNodeChg.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 #ifndef INCLUDED_SW_INC_HANDLEANCHORNODECHG_HXX
  20 #define INCLUDED_SW_INC_HANDLEANCHORNODECHG_HXX
  21
  22 #include "pam.hxx"
  23 #include <wrtsh.hxx>
  24
  25 class SwFlyFrameFormat;
  26 class SwFormatAnchor;
  27 class SwFlyFrame;
  28
  29 // helper class to track change of anchor node of at-paragraph respectively
  30 // at-character anchored fly frames
  31 // if such a change happens, it has to be checked, if the count of the anchor
  32 // frames also change. if yes, a re-creation of the fly frames is needed:
  33 // - deletion of existing fly frames before the intrinsic anchor node changes
  34 // - creation of new fly frames after the intrinsic anchor node change.
  35 class SwHandleAnchorNodeChg
  36 {
  37 public:
  38     /** checks, if re-creation of fly frames for an anchor node change at the
  39         given fly frame format is necessary, and performs the first part.
  40
  41         @param _rFlyFrameFormat
  42         reference to the fly frame format instance, which is handled.
  43
  44         @param _rNewAnchorFormat
  45         new anchor attribute, which will be applied at the given fly frame format
  46
  47         @param _pKeepThisFlyFrame
  48         optional parameter - pointer to a fly frame of the given fly frame format,
  49         which isn't deleted, if re-creation of fly frames is necessary.
  50     */
  51     SwHandleAnchorNodeChg(SwFlyFrameFormat& _rFlyFrameFormat,
  52                           const SwFormatAnchor& _rNewAnchorFormat,
  53                           SwFlyFrame const* _pKeepThisFlyFrame = nullptr);
  54
  55     /** calls <SwFlyFrameFormat::MakeFrames>, if re-creation of fly frames is necessary. */
  56     ~SwHandleAnchorNodeChg();
  57
  58 private:
  59     // fly frame format, which is tracked for an anchor node change.
  60     SwFlyFrameFormat& mrFlyFrameFormat;
  61     // internal flag, which indicates that the certain anchor node change occurs
  62     // and that re-creation of fly frames is necessary.
  63     bool mbAnchorNodeChanged;
  64
  65     /// If the fly frame has a comment, this points to the old comment anchor.
  66     std::unique_ptr<SwPosition> mpCommentAnchor;
  67
  68     SwWrtShell* mpWrtShell;
  69
  70     void ImplDestroy();
  71
  72     SwHandleAnchorNodeChg(const SwHandleAnchorNodeChg&) = delete;
  73     void operator=(const SwHandleAnchorNodeChg) = delete;
  74 };
  75 #endif
  76
  77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */