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 FINAL : public CompositeEditCommand { 36 public: 37 static PassRefPtrWillBeRawPtr<DeleteSelectionCommand> create(Document& document, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true) 38 { 39 return adoptRefWillBeNoop(new DeleteSelectionCommand(document, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup)); 40 } 41 static PassRefPtrWillBeRawPtr<DeleteSelectionCommand> create(const VisibleSelection& selection, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true) 42 { 43 return adoptRefWillBeNoop(new DeleteSelectionCommand(selection, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup)); 44 } 45 46 virtual void trace(Visitor*) OVERRIDE; 47 48 private: 49 DeleteSelectionCommand(Document&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool santizeMarkup); 50 DeleteSelectionCommand(const VisibleSelection&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool sanitizeMarkup); 51 52 virtual void doApply() OVERRIDE; 53 virtual EditAction editingAction() const OVERRIDE; 54 55 virtual bool preservesTypingStyle() const OVERRIDE; 56 57 void initializeStartEnd(Position&, Position&); 58 void setStartingSelectionOnSmartDelete(const Position&, const Position&); 59 void initializePositionData(); 60 void saveTypingStyleState(); 61 bool handleSpecialCaseBRDelete(); 62 void handleGeneralDelete(); 63 void fixupWhitespace(); 64 void mergeParagraphs(); 65 void removePreviouslySelectedEmptyTableRows(); 66 void calculateTypingStyleAfterDelete(); 67 void clearTransientState(); 68 void makeStylingElementsDirectChildrenOfEditableRootToPreventStyleLoss(); 69 virtual void removeNode(PassRefPtrWillBeRawPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable) OVERRIDE; 70 virtual void deleteTextFromNode(PassRefPtrWillBeRawPtr<Text>, unsigned, unsigned) OVERRIDE; 71 void removeRedundantBlocks(); 72 73 bool m_hasSelectionToDelete; 74 bool m_smartDelete; 75 bool m_mergeBlocksAfterDelete; 76 bool m_needPlaceholder; 77 bool m_expandForSpecialElements; 78 bool m_pruneStartBlockIfNecessary; 79 bool m_startsAtEmptyLine; 80 bool m_sanitizeMarkup; 81 82 // This data is transient and should be cleared at the end of the doApply function. 83 VisibleSelection m_selectionToDelete; 84 Position m_upstreamStart; 85 Position m_downstreamStart; 86 Position m_upstreamEnd; 87 Position m_downstreamEnd; 88 Position m_endingPosition; 89 Position m_leadingWhitespace; 90 Position m_trailingWhitespace; 91 RefPtrWillBeMember<Node> m_startBlock; 92 RefPtrWillBeMember<Node> m_endBlock; 93 RefPtrWillBeMember<EditingStyle> m_typingStyle; 94 RefPtrWillBeMember<EditingStyle> m_deleteIntoBlockquoteStyle; 95 RefPtrWillBeMember<Node> m_startRoot; 96 RefPtrWillBeMember<Node> m_endRoot; 97 RefPtrWillBeMember<Node> m_startTableRow; 98 RefPtrWillBeMember<Node> m_endTableRow; 99 RefPtrWillBeMember<Node> m_temporaryPlaceholder; 100 }; 101 102 } // namespace WebCore 103 104 #endif // DeleteSelectionCommand_h 105