1 /* 2 * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef DeleteSelectionCommand_h 27 #define DeleteSelectionCommand_h 28 29 #include "core/editing/CompositeEditCommand.h" 30 31 namespace WebCore { 32 33 class EditingStyle; 34 35 class DeleteSelectionCommand : public CompositeEditCommand { 36 public: 37 static PassRefPtr<DeleteSelectionCommand> create(Document& document, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool replace = false, bool expandForSpecialElements = false, bool sanitizeMarkup = true) 38 { 39 return adoptRef(new DeleteSelectionCommand(document, smartDelete, mergeBlocksAfterDelete, replace, expandForSpecialElements, sanitizeMarkup)); 40 } 41 static PassRefPtr<DeleteSelectionCommand> create(const VisibleSelection& selection, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool replace = false, bool expandForSpecialElements = false, bool sanitizeMarkup = true) 42 { 43 return adoptRef(new DeleteSelectionCommand(selection, smartDelete, mergeBlocksAfterDelete, replace, expandForSpecialElements, sanitizeMarkup)); 44 } 45 46 private: 47 DeleteSelectionCommand(Document&, bool smartDelete, bool mergeBlocksAfterDelete, bool replace, bool expandForSpecialElements, bool santizeMarkup); 48 DeleteSelectionCommand(const VisibleSelection&, bool smartDelete, bool mergeBlocksAfterDelete, bool replace, bool expandForSpecialElements, bool sanitizeMarkup); 49 50 virtual void doApply(); 51 virtual EditAction editingAction() const; 52 53 virtual bool preservesTypingStyle() const; 54 55 void initializeStartEnd(Position&, Position&); 56 void setStartingSelectionOnSmartDelete(const Position&, const Position&); 57 void initializePositionData(); 58 void saveTypingStyleState(); 59 void insertPlaceholderForAncestorBlockContent(); 60 bool handleSpecialCaseBRDelete(); 61 void handleGeneralDelete(); 62 void fixupWhitespace(); 63 void mergeParagraphs(); 64 void removePreviouslySelectedEmptyTableRows(); 65 void calculateEndingPosition(); 66 void calculateTypingStyleAfterDelete(); 67 void clearTransientState(); 68 void makeStylingElementsDirectChildrenOfEditableRootToPreventStyleLoss(); 69 virtual void removeNode(PassRefPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable); 70 virtual void deleteTextFromNode(PassRefPtr<Text>, unsigned, unsigned); 71 void removeRedundantBlocks(); 72 73 bool m_hasSelectionToDelete; 74 bool m_smartDelete; 75 bool m_mergeBlocksAfterDelete; 76 bool m_needPlaceholder; 77 bool m_replace; 78 bool m_expandForSpecialElements; 79 bool m_pruneStartBlockIfNecessary; 80 bool m_startsAtEmptyLine; 81 bool m_sanitizeMarkup; 82 83 // This data is transient and should be cleared at the end of the doApply function. 84 VisibleSelection m_selectionToDelete; 85 Position m_upstreamStart; 86 Position m_downstreamStart; 87 Position m_upstreamEnd; 88 Position m_downstreamEnd; 89 Position m_endingPosition; 90 Position m_leadingWhitespace; 91 Position m_trailingWhitespace; 92 RefPtr<Node> m_startBlock; 93 RefPtr<Node> m_endBlock; 94 RefPtr<EditingStyle> m_typingStyle; 95 RefPtr<EditingStyle> m_deleteIntoBlockquoteStyle; 96 RefPtr<Node> m_startRoot; 97 RefPtr<Node> m_endRoot; 98 RefPtr<Node> m_startTableRow; 99 RefPtr<Node> m_endTableRow; 100 RefPtr<Node> m_temporaryPlaceholder; 101 }; 102 103 } // namespace WebCore 104 105 #endif // DeleteSelectionCommand_h 106