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 "CompositeEditCommand.h" 30 31 namespace WebCore { 32 33 class DeleteSelectionCommand : public CompositeEditCommand { 34 public: 35 static PassRefPtr<DeleteSelectionCommand> create(Document* document, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool replace = false, bool expandForSpecialElements = false) 36 { 37 return adoptRef(new DeleteSelectionCommand(document, smartDelete, mergeBlocksAfterDelete, replace, expandForSpecialElements)); 38 } 39 static PassRefPtr<DeleteSelectionCommand> create(const VisibleSelection& selection, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool replace = false, bool expandForSpecialElements = false) 40 { 41 return adoptRef(new DeleteSelectionCommand(selection, smartDelete, mergeBlocksAfterDelete, replace, expandForSpecialElements)); 42 } 43 44 private: 45 DeleteSelectionCommand(Document*, bool smartDelete, bool mergeBlocksAfterDelete, bool replace, bool expandForSpecialElements); 46 DeleteSelectionCommand(const VisibleSelection&, bool smartDelete, bool mergeBlocksAfterDelete, bool replace, bool expandForSpecialElements); 47 48 virtual void doApply(); 49 virtual EditAction editingAction() const; 50 51 virtual bool preservesTypingStyle() const; 52 53 void initializeStartEnd(Position&, Position&); 54 void initializePositionData(); 55 void saveTypingStyleState(); 56 void insertPlaceholderForAncestorBlockContent(); 57 bool handleSpecialCaseBRDelete(); 58 void handleGeneralDelete(); 59 void fixupWhitespace(); 60 void mergeParagraphs(); 61 void removePreviouslySelectedEmptyTableRows(); 62 void calculateEndingPosition(); 63 void calculateTypingStyleAfterDelete(); 64 void clearTransientState(); 65 virtual void removeNode(PassRefPtr<Node>); 66 virtual void deleteTextFromNode(PassRefPtr<Text>, unsigned, unsigned); 67 68 bool m_hasSelectionToDelete; 69 bool m_smartDelete; 70 bool m_mergeBlocksAfterDelete; 71 bool m_needPlaceholder; 72 bool m_replace; 73 bool m_expandForSpecialElements; 74 bool m_pruneStartBlockIfNecessary; 75 bool m_startsAtEmptyLine; 76 77 // This data is transient and should be cleared at the end of the doApply function. 78 VisibleSelection m_selectionToDelete; 79 Position m_upstreamStart; 80 Position m_downstreamStart; 81 Position m_upstreamEnd; 82 Position m_downstreamEnd; 83 Position m_endingPosition; 84 Position m_leadingWhitespace; 85 Position m_trailingWhitespace; 86 RefPtr<Node> m_startBlock; 87 RefPtr<Node> m_endBlock; 88 RefPtr<CSSMutableStyleDeclaration> m_typingStyle; 89 RefPtr<CSSMutableStyleDeclaration> m_deleteIntoBlockquoteStyle; 90 RefPtr<Node> m_startRoot; 91 RefPtr<Node> m_endRoot; 92 RefPtr<Node> m_startTableRow; 93 RefPtr<Node> m_endTableRow; 94 RefPtr<Node> m_temporaryPlaceholder; 95 }; 96 97 } // namespace WebCore 98 99 #endif // DeleteSelectionCommand_h 100