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 35namespace WebCore { 36 37EditCommand::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 47EditCommand::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 57EditCommand::~EditCommand() 58{ 59} 60 61EditAction EditCommand::editingAction() const 62{ 63 return EditActionUnspecified; 64} 65 66static inline EditCommandComposition* compositionIfPossible(EditCommand* command) 67{ 68 if (!command->isCompositeEditCommand()) 69 return 0; 70 return toCompositeEditCommand(command)->composition(); 71} 72 73void 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 86void EditCommand::setStartingSelection(const VisiblePosition& position) 87{ 88 setStartingSelection(VisibleSelection(position)); 89} 90 91void 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 102void EditCommand::setEndingSelection(const VisiblePosition& position) 103{ 104 setEndingSelection(VisibleSelection(position)); 105} 106 107void 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 118void SimpleEditCommand::doReapply() 119{ 120 doApply(); 121} 122 123void 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 WebCore 132