sw/inc/undobj.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.
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   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_UNDOBJ_HXX
  20 #define INCLUDED_SW_INC_UNDOBJ_HXX
  21
  22 #include <vector>
  23 #include <memory>
  24
  25 #include <svl/undo.hxx>
  26 #include <tools/solar.h>
  27 #include "SwRewriter.hxx"
  28 #include "swundo.hxx"
  29 #include <o3tl/typed_flags_set.hxx>
  30 #include <optional>
  31
  32 class SwHistory;
  33 class SwPaM;
  34 struct SwPosition;
  35 class SwDoc;
  36 class SwTextFormatColl;
  37 class SwFrameFormat;
  38 class SwFormatAnchor;
  39 class SwNodeIndex;
  40 class SwNodeRange;
  41 class SwRedlineData;
  42 class SwRedlineSaveDatas;
  43 enum class RedlineFlags;
  44 enum class RndStdIds;
  45 typedef struct _xmlTextWriter* xmlTextWriterPtr;
  46
  47 namespace sw {
  48     class UndoRedoContext;
  49     class RepeatContext;
  50 }
  51
  52 class SwUndo
  53     : public SfxUndoAction
  54 {
  55     SwUndoId const m_nId;
  56     RedlineFlags   m_nOrigRedlineFlags;
  57     ViewShellId    m_nViewShellId;
  58     bool m_isRepeatIgnored; ///< for multi-selection, only repeat 1st selection
  59
  60 protected:
  61     bool m_bCacheComment;
  62     mutable std::optional<OUString> maComment;
  63
  64     static void RemoveIdxFromSection( SwDoc&, sal_uLong nSttIdx, const sal_uLong* pEndIdx = nullptr );
  65     static void RemoveIdxFromRange( SwPaM& rPam, bool bMoveNext );
  66     static void RemoveIdxRel( sal_uLong, const SwPosition& );
  67
  68     static bool CanRedlineGroup( SwRedlineSaveDatas& rCurr,
  69                                 const SwRedlineSaveDatas& rCheck,
  70                                 bool bCurrIsEnd );
  71
  72     /**
  73        Returns the rewriter for this object.
  74
  75        @return the rewriter for this object
  76     */
  77     virtual SwRewriter GetRewriter() const;
  78
  79     // the 4 methods that derived classes have to override
  80     // base implementation does nothing
  81     virtual void RepeatImpl( ::sw::RepeatContext & );
  82 public: // should not be public, but ran into trouble in untbl.cxx
  83     virtual void UndoImpl( ::sw::UndoRedoContext & ) = 0;
  84     virtual void RedoImpl( ::sw::UndoRedoContext & ) = 0;
  85
  86 private:
  87     /// Try to obtain the view shell ID of the current view.
  88     static ViewShellId CreateViewShellId(const SwDoc* pDoc);
  89     // SfxUndoAction
  90     virtual void Undo() override;
  91     virtual void Redo() override;
  92     virtual void UndoWithContext(SfxUndoContext &) override;
  93     virtual void RedoWithContext(SfxUndoContext &) override;
  94     virtual void Repeat(SfxRepeatTarget &) override;
  95     virtual bool CanRepeat(SfxRepeatTarget &) const override;
  96
  97 public:
  98     SwUndo(SwUndoId const nId, const SwDoc* pDoc);
  99     virtual ~SwUndo() override;
 100
 101     SwUndoId GetId() const { return m_nId; }
 102
 103     /**
 104        Returns textual comment for this undo object.
 105
 106        The textual comment is created from the resource string
 107        corresponding to this object's ID. The rewriter of this object
 108        is applied to the resource string to get the final comment.
 109
 110        @return textual comment for this undo object
 111     */
 112     virtual OUString GetComment() const override;
 113
 114     /// See SfxUndoAction::GetViewShellId().
 115     ViewShellId GetViewShellId() const override;
 116
 117     // UndoObject remembers which mode was turned on.
 118     // In Undo/Redo/Repeat this remembered mode is switched on.
 119     RedlineFlags GetRedlineFlags() const { return m_nOrigRedlineFlags; }
 120     void SetRedlineFlags( RedlineFlags eMode ) { m_nOrigRedlineFlags = eMode; }
 121
 122     bool IsDelBox() const;
 123
 124     // Save and set Redline data.
 125     static bool FillSaveData( const SwPaM& rRange, SwRedlineSaveDatas& rSData,
 126                               bool bDelRange = true, bool bCopyNext = true );
 127     static bool FillSaveDataForFormat( const SwPaM& , SwRedlineSaveDatas& );
 128     static void SetSaveData( SwDoc& rDoc, SwRedlineSaveDatas& rSData );
 129     static bool HasHiddenRedlines( const SwRedlineSaveDatas& rSData );
 130     void IgnoreRepeat() { m_isRepeatIgnored = true; }
 131 };
 132
 133 enum class DelContentType : sal_uInt16
 134 {
 135     Ftn          = 0x01,
 136     Fly          = 0x02,
 137     Bkm          = 0x08,
 138     AllMask      = 0x0b,
 139     Replace      = 0x10,
 140     WriterfilterHack = 0x20,
 141     ExcludeFlyAtStartEnd = 0x40,
 142     CheckNoCntnt = 0x80,
 143 };
 144 namespace o3tl {
 145     template<> struct typed_flags<DelContentType> : is_typed_flags<DelContentType, 0xfb> {};
 146 }
 147
 148 /// will DelContentIndex destroy a frame anchored at character at rAnchorPos?
 149 bool IsDestroyFrameAnchoredAtChar(SwPosition const & rAnchorPos,
 150         SwPosition const & rStart, SwPosition const & rEnd,
 151         DelContentType const nDelContentType = DelContentType::AllMask);
 152 /// is a fly anchored at paragraph at rAnchorPos selected?
 153 bool IsSelectFrameAnchoredAtPara(SwPosition const & rAnchorPos,
 154         SwPosition const & rStart, SwPosition const & rEnd,
 155         DelContentType const nDelContentType = DelContentType::AllMask);
 156 /// check at-char and at-para flys in rDoc
 157 bool IsFlySelectedByCursor(SwDoc const & rDoc,
 158         SwPosition const & rStart, SwPosition const & rEnd);
 159
 160 // This class has to be inherited into an Undo-object if it saves content
 161 // for Redo/Undo...
 162 class SwUndoSaveContent
 163 {
 164 protected:
 165
 166     std::unique_ptr<SwHistory> m_pHistory;
 167
 168     // Needed for deletion of content. For Redo content is moved into the
 169     // UndoNodesArray. These methods always create a new node to insert
 170     // content. So the attributes do not get expanded.
 171     // MoveTo:      moves from the NodesArray into the UndoNodesArray.
 172     // MoveFrom:    moves from the UndoNodesArray into the NodesArray.
 173     static void MoveToUndoNds( SwPaM& rPam,
 174                         SwNodeIndex* pNodeIdx,
 175                         sal_uLong* pEndNdIdx = nullptr );
 176     static void MoveFromUndoNds( SwDoc& rDoc, sal_uLong nNodeIdx,
 177                           SwPosition& rInsPos,
 178                           const sal_uLong* pEndNdIdx = nullptr,
 179                           bool bForceCreateFrames = false);
 180
 181     // These two methods move the SPoint back/forth from PaM. With it
 182     // a range can be spanned for Undo/Redo. (In this case the SPoint
 183     // is before the manipulated range!!)
 184     // The flag indicates if there is content before the SPoint.
 185     static bool MovePtBackward( SwPaM& rPam );
 186     static void MovePtForward( SwPaM& rPam, bool bMvBkwrd );
 187
 188     // Before moving stuff into UndoNodes-Array care has to be taken that
 189     // the content-bearing attributes are removed from the nodes-array.
 190     void DelContentIndex( const SwPosition& pMark, const SwPosition& pPoint,
 191                         DelContentType nDelContentType = DelContentType::AllMask );
 192
 193 public:
 194     SwUndoSaveContent();
 195     virtual ~SwUndoSaveContent() COVERITY_NOEXCEPT_FALSE;
 196     virtual void dumpAsXml(xmlTextWriterPtr pWriter) const;
 197 };
 198
 199 // Save a complete section in nodes-array.
 200 class SwUndoSaveSection : private SwUndoSaveContent
 201 {
 202     std::unique_ptr<SwNodeIndex> m_pMovedStart;
 203     std::unique_ptr<SwRedlineSaveDatas> m_pRedlineSaveData;
 204     sal_uLong m_nMoveLen;           // Index into UndoNodes-Array.
 205     sal_uLong m_nStartPos;
 206
 207 protected:
 208     SwNodeIndex* GetMvSttIdx() const { return m_pMovedStart.get(); }
 209     sal_uLong GetMvNodeCnt() const { return m_nMoveLen; }
 210
 211 public:
 212     SwUndoSaveSection();
 213     ~SwUndoSaveSection();
 214
 215     void SaveSection( const SwNodeIndex& rSttIdx );
 216     void SaveSection(const SwNodeRange& rRange, bool bExpandNodes = true);
 217     void RestoreSection( SwDoc* pDoc, SwNodeIndex* pIdx, sal_uInt16 nSectType );
 218     void RestoreSection(SwDoc* pDoc, const SwNodeIndex& rInsPos, bool bForceCreateFrames = false);
 219
 220     const SwHistory* GetHistory() const { return m_pHistory.get(); }
 221           SwHistory* GetHistory()       { return m_pHistory.get(); }
 222     virtual void dumpAsXml(xmlTextWriterPtr pWriter) const;
 223 };
 224
 225 // This class saves the PaM as sal_uInt16's and is able to restore it
 226 // into a PaM.
 227 class SwUndRng
 228 {
 229 public:
 230     sal_uLong m_nSttNode, m_nEndNode;
 231     sal_Int32 m_nSttContent, m_nEndContent;
 232
 233     SwUndRng();
 234     SwUndRng( const SwPaM& );
 235
 236     void SetValues( const SwPaM& rPam );
 237     void SetPaM( SwPaM&, bool bCorrToContent = false ) const;
 238     SwPaM & AddUndoRedoPaM(
 239         ::sw::UndoRedoContext &, bool const bCorrToContent = false) const;
 240 };
 241
 242 class SwUndoInsLayFormat;
 243
 244 namespace sw {
 245
 246 std::unique_ptr<std::vector<SwFrameFormat*>>
 247 GetFlysAnchoredAt(SwDoc & rDoc, sal_uLong nSttNode);
 248
 249 }
 250
 251 // base class for insertion of Document, Glossaries and Copy
 252 class SwUndoInserts : public SwUndo, public SwUndRng, private SwUndoSaveContent
 253 {
 254     SwTextFormatColl *m_pTextFormatColl, *m_pLastNodeColl;
 255     std::unique_ptr<std::vector<SwFrameFormat*>> m_pFrameFormats;
 256     std::vector< std::shared_ptr<SwUndoInsLayFormat> > m_FlyUndos;
 257     std::unique_ptr<SwRedlineData> m_pRedlineData;
 258     int m_nDeleteTextNodes;
 259
 260 protected:
 261     sal_uLong m_nNodeDiff;
 262     /// start of Content in UndoNodes for Redo
 263     std::unique_ptr<SwNodeIndex> m_pUndoNodeIndex;
 264     sal_uInt16 m_nSetPos;                 // Start in the history list.
 265
 266     SwUndoInserts( SwUndoId nUndoId, const SwPaM& );
 267 public:
 268     virtual ~SwUndoInserts() override;
 269
 270     virtual void UndoImpl( ::sw::UndoRedoContext & ) override;
 271     virtual void RedoImpl( ::sw::UndoRedoContext & ) override;
 272     virtual void RepeatImpl( ::sw::RepeatContext & ) override;
 273
 274     // Set destination range after reading.
 275     void SetInsertRange( const SwPaM&, bool bScanFlys = true,
 276                          int nDeleteTextNodes = 1);
 277
 278     static bool IsCreateUndoForNewFly(SwFormatAnchor const& rAnchor,
 279         sal_uLong const nStartNode, sal_uLong const nEndNode);
 280     std::vector<SwFrameFormat*> * GetFlysAnchoredAt() { return m_pFrameFormats.get(); }
 281
 282     void dumpAsXml(xmlTextWriterPtr pWriter) const override;
 283 };
 284
 285 class SwUndoInsDoc final : public SwUndoInserts
 286 {
 287 public:
 288     SwUndoInsDoc( const SwPaM& );
 289 };
 290
 291 class SwUndoCpyDoc final : public SwUndoInserts
 292 {
 293 public:
 294     SwUndoCpyDoc( const SwPaM& );
 295 };
 296
 297 class SwUndoFlyBase : public SwUndo, private SwUndoSaveSection
 298 {
 299 protected:
 300     SwFrameFormat* m_pFrameFormat;          // The saved FlyFormat.
 301     sal_uLong m_nNodePagePos;
 302     sal_Int32 m_nContentPos;         // Page at/in paragraph.
 303     RndStdIds m_nRndId;
 304     bool m_bDelFormat;           // Delete saved format.
 305
 306     void InsFly(::sw::UndoRedoContext & rContext, bool bShowSel = true);
 307     void DelFly( SwDoc* );
 308
 309     SwUndoFlyBase( SwFrameFormat* pFormat, SwUndoId nUndoId );
 310
 311     SwNodeIndex* GetMvSttIdx() const { return SwUndoSaveSection::GetMvSttIdx(); }
 312     sal_uLong GetMvNodeCnt() const { return SwUndoSaveSection::GetMvNodeCnt(); }
 313
 314 public:
 315     virtual ~SwUndoFlyBase() override;
 316     void dumpAsXml(xmlTextWriterPtr pWriter) const override;
 317
 318 };
 319
 320 class SwUndoInsLayFormat : public SwUndoFlyBase
 321 {
 322     sal_uLong mnCursorSaveIndexPara;           // Cursor position
 323     sal_Int32 mnCursorSaveIndexPos;            // for undo
 324 public:
 325     SwUndoInsLayFormat( SwFrameFormat* pFormat, sal_uLong nNodeIdx, sal_Int32 nCntIdx );
 326
 327     virtual ~SwUndoInsLayFormat() override;
 328
 329     virtual void UndoImpl( ::sw::UndoRedoContext & ) override;
 330     virtual void RedoImpl( ::sw::UndoRedoContext & ) override;
 331     virtual void RepeatImpl( ::sw::RepeatContext & ) override;
 332
 333     virtual OUString GetComment() const override;
 334
 335 };
 336
 337 class SwUndoDelLayFormat final : public SwUndoFlyBase
 338 {
 339     bool m_bShowSelFrame;
 340 public:
 341     SwUndoDelLayFormat( SwFrameFormat* pFormat );
 342
 343     virtual void UndoImpl( ::sw::UndoRedoContext & ) override;
 344     virtual void RedoImpl( ::sw::UndoRedoContext & ) override;
 345
 346     void RedoForRollback();
 347
 348     void ChgShowSel( bool bNew ) { m_bShowSelFrame = bNew; }
 349
 350     virtual SwRewriter GetRewriter() const override;
 351
 352 };
 353
 354 #endif
 355
 356 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */