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/DeleteFromTextNodeCommand.h" 28 29 #include "bindings/v8/ExceptionState.h" 30 #include "bindings/v8/ExceptionStatePlaceholder.h" 31 #include "core/dom/Document.h" 32 #include "core/dom/Text.h" 33 34 namespace WebCore { 35 36 DeleteFromTextNodeCommand::DeleteFromTextNodeCommand(PassRefPtrWillBeRawPtr<Text> node, unsigned offset, unsigned count) 37 : SimpleEditCommand(node->document()) 38 , m_node(node) 39 , m_offset(offset) 40 , m_count(count) 41 { 42 ASSERT(m_node); 43 ASSERT(m_offset <= m_node->length()); 44 ASSERT(m_offset + m_count <= m_node->length()); 45 } 46 47 void DeleteFromTextNodeCommand::doApply() 48 { 49 ASSERT(m_node); 50 51 if (!m_node->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable)) 52 return; 53 54 TrackExceptionState exceptionState; 55 m_text = m_node->substringData(m_offset, m_count, exceptionState); 56 if (exceptionState.hadException()) 57 return; 58 59 m_node->deleteData(m_offset, m_count, exceptionState, CharacterData::DeprecatedRecalcStyleImmediatlelyForEditing); 60 } 61 62 void DeleteFromTextNodeCommand::doUnapply() 63 { 64 ASSERT(m_node); 65 66 if (!m_node->rendererIsEditable()) 67 return; 68 69 m_node->insertData(m_offset, m_text, IGNORE_EXCEPTION, CharacterData::DeprecatedRecalcStyleImmediatlelyForEditing); 70 } 71 72 void DeleteFromTextNodeCommand::trace(Visitor* visitor) 73 { 74 visitor->trace(m_node); 75 SimpleEditCommand::trace(visitor); 76 } 77 78 } // namespace WebCore 79