1 /* 2 * Copyright (C) 2005, 2006, 2007 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 #include "config.h" 27 #include "core/editing/EditCommand.h" 28 29 #include "core/dom/Document.h" 30 #include "core/dom/NodeTraversal.h" 31 #include "core/editing/CompositeEditCommand.h" 32 #include "core/editing/FrameSelection.h" 33 #include "core/frame/LocalFrame.h" 34 35 namespace blink { 36 37 EditCommand::EditCommand(Document& document) 38 : m_document(&document) 39 , m_parent(nullptr) 40 { 41 ASSERT(m_document); 42 ASSERT(m_document->frame()); 43 setStartingSelection(m_document->frame()->selection().selection()); 44 setEndingSelection(m_startingSelection); 45 } 46 47 EditCommand::EditCommand(Document* document, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection) 48 : m_document(document) 49 , m_parent(nullptr) 50 { 51 ASSERT(m_document); 52 ASSERT(m_document->frame()); 53 setStartingSelection(startingSelection); 54 setEndingSelection(endingSelection); 55 } 56 57 EditCommand::~EditCommand() 58 { 59 } 60 61 EditAction EditCommand::editingAction() const 62 { 63 return EditActionUnspecified; 64 } 65 66 static inline EditCommandComposition* compositionIfPossible(EditCommand* command) 67 { 68 if (!command->isCompositeEditCommand()) 69 return 0; 70 return toCompositeEditCommand(command)->composition(); 71 } 72 73 void EditCommand::setStartingSelection(const VisibleSelection& selection) 74 { 75 for (EditCommand* command = this; ; command = command->m_parent) { 76 if (EditCommandComposition* composition = compositionIfPossible(command)) { 77 ASSERT(command->isTopLevelCommand()); 78 composition->setStartingSelection(selection); 79 } 80 command->m_startingSelection = selection; 81 if (!command->m_parent || command->m_parent->isFirstCommand(command)) 82 break; 83 } 84 } 85 86 void EditCommand::setStartingSelection(const VisiblePosition& position) 87 { 88 setStartingSelection(VisibleSelection(position)); 89 } 90 91 void EditCommand::setEndingSelection(const VisibleSelection& selection) 92 { 93 for (EditCommand* command = this; command; command = command->m_parent) { 94 if (EditCommandComposition* composition = compositionIfPossible(command)) { 95 ASSERT(command->isTopLevelCommand()); 96 composition->setEndingSelection(selection); 97 } 98 command->m_endingSelection = selection; 99 } 100 } 101 102 void EditCommand::setEndingSelection(const VisiblePosition& position) 103 { 104 setEndingSelection(VisibleSelection(position)); 105 } 106 107 void EditCommand::setParent(CompositeEditCommand* parent) 108 { 109 ASSERT((parent && !m_parent) || (!parent && m_parent)); 110 ASSERT(!parent || !isCompositeEditCommand() || !toCompositeEditCommand(this)->composition()); 111 m_parent = parent; 112 if (parent) { 113 m_startingSelection = parent->m_endingSelection; 114 m_endingSelection = parent->m_endingSelection; 115 } 116 } 117 118 void SimpleEditCommand::doReapply() 119 { 120 doApply(); 121 } 122 123 void EditCommand::trace(Visitor* visitor) 124 { 125 visitor->trace(m_document); 126 visitor->trace(m_startingSelection); 127 visitor->trace(m_endingSelection); 128 visitor->trace(m_parent); 129 } 130 131 } // namespace blink 132