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 blink { 32 33 class EditingStyle; 34 class HTMLTableRowElement; 35 36 class DeleteSelectionCommand FINAL : public CompositeEditCommand { 37 public: 38 static PassRefPtrWillBeRawPtr<DeleteSelectionCommand> create(Document& document, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true) 39 { 40 return adoptRefWillBeNoop(new DeleteSelectionCommand(document, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup)); 41 } 42 static PassRefPtrWillBeRawPtr<DeleteSelectionCommand> create(const VisibleSelection& selection, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = false, bool sanitizeMarkup = true) 43 { 44 return adoptRefWillBeNoop(new DeleteSelectionCommand(selection, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup)); 45 } 46 47 virtual void trace(Visitor*) OVERRIDE; 48 49 private: 50 DeleteSelectionCommand(Document&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool santizeMarkup); 51 DeleteSelectionCommand(const VisibleSelection&, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool sanitizeMarkup); 52 53 virtual void doApply() OVERRIDE; 54 virtual EditAction editingAction() const OVERRIDE; 55 56 virtual bool preservesTypingStyle() const OVERRIDE; 57 58 void initializeStartEnd(Position&, Position&); 59 void setStartingSelectionOnSmartDelete(const Position&, const Position&); 60 void initializePositionData(); 61 void saveTypingStyleState(); 62 bool handleSpecialCaseBRDelete(); 63 void handleGeneralDelete(); 64 void fixupWhitespace(); 65 void mergeParagraphs(); 66 void removePreviouslySelectedEmptyTableRows(); 67 void calculateTypingStyleAfterDelete(); 68 void clearTransientState(); 69 void makeStylingElementsDirectChildrenOfEditableRootToPreventStyleLoss(); 70 virtual void removeNode(PassRefPtrWillBeRawPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable) OVERRIDE; 71 virtual void deleteTextFromNode(PassRefPtrWillBeRawPtr<Text>, unsigned, unsigned) OVERRIDE; 72 void removeRedundantBlocks(); 73 74 bool m_hasSelectionToDelete; 75 bool m_smartDelete; 76 bool m_mergeBlocksAfterDelete; 77 bool m_needPlaceholder; 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 RefPtrWillBeMember<Node> m_startBlock; 93 RefPtrWillBeMember<Node> m_endBlock; 94 RefPtrWillBeMember<EditingStyle> m_typingStyle; 95 RefPtrWillBeMember<EditingStyle> m_deleteIntoBlockquoteStyle; 96 RefPtrWillBeMember<Element> m_startRoot; 97 RefPtrWillBeMember<Element> m_endRoot; 98 RefPtrWillBeMember<HTMLTableRowElement> m_startTableRow; 99 RefPtrWillBeMember<HTMLTableRowElement> m_endTableRow; 100 RefPtrWillBeMember<Node> m_temporaryPlaceholder; 101 }; 102 103 } // namespace blink 104 105 #endif // DeleteSelectionCommand_h 106