1 /* 2 * Copyright (C) 2005, 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 #include "config.h" 27 #include "core/editing/MergeIdenticalElementsCommand.h" 28 29 #include "bindings/v8/ExceptionState.h" 30 #include "bindings/v8/ExceptionStatePlaceholder.h" 31 #include "core/dom/Element.h" 32 33 namespace WebCore { 34 35 MergeIdenticalElementsCommand::MergeIdenticalElementsCommand(PassRefPtrWillBeRawPtr<Element> first, PassRefPtrWillBeRawPtr<Element> second) 36 : SimpleEditCommand(first->document()) 37 , m_element1(first) 38 , m_element2(second) 39 { 40 ASSERT(m_element1); 41 ASSERT(m_element2); 42 ASSERT(m_element1->nextSibling() == m_element2); 43 } 44 45 void MergeIdenticalElementsCommand::doApply() 46 { 47 if (m_element1->nextSibling() != m_element2 || !m_element1->rendererIsEditable() || !m_element2->rendererIsEditable()) 48 return; 49 50 m_atChild = m_element2->firstChild(); 51 52 WillBeHeapVector<RefPtrWillBeMember<Node> > children; 53 for (Node* child = m_element1->firstChild(); child; child = child->nextSibling()) 54 children.append(child); 55 56 size_t size = children.size(); 57 for (size_t i = 0; i < size; ++i) 58 m_element2->insertBefore(children[i].release(), m_atChild.get(), IGNORE_EXCEPTION); 59 60 m_element1->remove(IGNORE_EXCEPTION); 61 } 62 63 void MergeIdenticalElementsCommand::doUnapply() 64 { 65 ASSERT(m_element1); 66 ASSERT(m_element2); 67 68 RefPtrWillBeRawPtr<Node> atChild = m_atChild.release(); 69 70 ContainerNode* parent = m_element2->parentNode(); 71 if (!parent || !parent->rendererIsEditable()) 72 return; 73 74 TrackExceptionState exceptionState; 75 76 parent->insertBefore(m_element1.get(), m_element2.get(), exceptionState); 77 if (exceptionState.hadException()) 78 return; 79 80 WillBeHeapVector<RefPtrWillBeMember<Node> > children; 81 for (Node* child = m_element2->firstChild(); child && child != atChild; child = child->nextSibling()) 82 children.append(child); 83 84 size_t size = children.size(); 85 for (size_t i = 0; i < size; ++i) 86 m_element1->appendChild(children[i].release(), exceptionState); 87 } 88 89 void MergeIdenticalElementsCommand::trace(Visitor* visitor) 90 { 91 visitor->trace(m_element1); 92 visitor->trace(m_element2); 93 visitor->trace(m_atChild); 94 SimpleEditCommand::trace(visitor); 95 } 96 97 } // namespace WebCore 98
