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 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 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 31namespace WebCore { 32 33class EditingStyle; 34 35class DeleteSelectionCommand : public CompositeEditCommand { 36public: 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 46protected: 47 DeleteSelectionCommand(Document&, bool smartDelete, bool mergeBlocksAfterDelete, bool replace, bool expandForSpecialElements, bool santizeMarkup); 48 49private: 50 DeleteSelectionCommand(const VisibleSelection&, bool smartDelete, bool mergeBlocksAfterDelete, bool replace, bool expandForSpecialElements, bool sanitizeMarkup); 51 52 virtual void doApply(); 53 virtual EditAction editingAction() const; 54 55 virtual bool preservesTypingStyle() const; 56 57 void initializeStartEnd(Position&, Position&); 58 void setStartingSelectionOnSmartDelete(const Position&, const Position&); 59 void initializePositionData(); 60 void saveTypingStyleState(); 61 void insertPlaceholderForAncestorBlockContent(); 62 bool handleSpecialCaseBRDelete(); 63 void handleGeneralDelete(); 64 void fixupWhitespace(); 65 void mergeParagraphs(); 66 void removePreviouslySelectedEmptyTableRows(); 67 void calculateEndingPosition(); 68 void calculateTypingStyleAfterDelete(); 69 void clearTransientState(); 70 void makeStylingElementsDirectChildrenOfEditableRootToPreventStyleLoss(); 71 virtual void removeNode(PassRefPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable); 72 virtual void deleteTextFromNode(PassRefPtr<Text>, unsigned, unsigned); 73 void removeRedundantBlocks(); 74 75 // This function provides access to original string after the correction has been deleted. 76 String originalStringForAutocorrectionAtBeginningOfSelection(); 77 78 bool m_hasSelectionToDelete; 79 bool m_smartDelete; 80 bool m_mergeBlocksAfterDelete; 81 bool m_needPlaceholder; 82 bool m_replace; 83 bool m_expandForSpecialElements; 84 bool m_pruneStartBlockIfNecessary; 85 bool m_startsAtEmptyLine; 86 bool m_sanitizeMarkup; 87 88 // This data is transient and should be cleared at the end of the doApply function. 89 VisibleSelection m_selectionToDelete; 90 Position m_upstreamStart; 91 Position m_downstreamStart; 92 Position m_upstreamEnd; 93 Position m_downstreamEnd; 94 Position m_endingPosition; 95 Position m_leadingWhitespace; 96 Position m_trailingWhitespace; 97 RefPtr<Node> m_startBlock; 98 RefPtr<Node> m_endBlock; 99 RefPtr<EditingStyle> m_typingStyle; 100 RefPtr<EditingStyle> m_deleteIntoBlockquoteStyle; 101 RefPtr<Node> m_startRoot; 102 RefPtr<Node> m_endRoot; 103 RefPtr<Node> m_startTableRow; 104 RefPtr<Node> m_endTableRow; 105 RefPtr<Node> m_temporaryPlaceholder; 106}; 107 108} // namespace WebCore 109 110#endif // DeleteSelectionCommand_h 111