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 "DeleteFromTextNodeCommand.h" 28 29 #include "Text.h" 30 31 namespace WebCore { 32 33 DeleteFromTextNodeCommand::DeleteFromTextNodeCommand(PassRefPtr<Text> node, unsigned offset, unsigned count) 34 : SimpleEditCommand(node->document()) 35 , m_node(node) 36 , m_offset(offset) 37 , m_count(count) 38 { 39 ASSERT(m_node); 40 ASSERT(m_offset <= m_node->length()); 41 ASSERT(m_offset + m_count <= m_node->length()); 42 } 43 44 void DeleteFromTextNodeCommand::doApply() 45 { 46 ASSERT(m_node); 47 48 if (!m_node->isContentEditable()) 49 return; 50 51 ExceptionCode ec = 0; 52 m_text = m_node->substringData(m_offset, m_count, ec); 53 if (ec) 54 return; 55 56 m_node->deleteData(m_offset, m_count, ec); 57 } 58 59 void DeleteFromTextNodeCommand::doUnapply() 60 { 61 ASSERT(m_node); 62 63 if (!m_node->isContentEditable()) 64 return; 65 66 ExceptionCode ec; 67 m_node->insertData(m_offset, m_text, ec); 68 } 69 70 } // namespace WebCore 71
