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 "AXObjectCache.h" 30 #include "Text.h" 31 32 namespace WebCore { 33 34 DeleteFromTextNodeCommand::DeleteFromTextNodeCommand(PassRefPtr<Text> node, unsigned offset, unsigned count) 35 : SimpleEditCommand(node->document()) 36 , m_node(node) 37 , m_offset(offset) 38 , m_count(count) 39 { 40 ASSERT(m_node); 41 ASSERT(m_offset <= m_node->length()); 42 ASSERT(m_offset + m_count <= m_node->length()); 43 } 44 45 void DeleteFromTextNodeCommand::doApply() 46 { 47 ASSERT(m_node); 48 49 if (!m_node->rendererIsEditable()) 50 return; 51 52 ExceptionCode ec = 0; 53 m_text = m_node->substringData(m_offset, m_count, ec); 54 if (ec) 55 return; 56 57 // Need to notify this before actually deleting the text 58 if (AXObjectCache::accessibilityEnabled()) 59 document()->axObjectCache()->nodeTextChangeNotification(m_node->renderer(), AXObjectCache::AXTextDeleted, m_offset, m_count); 60 61 m_node->deleteData(m_offset, m_count, ec); 62 } 63 64 void DeleteFromTextNodeCommand::doUnapply() 65 { 66 ASSERT(m_node); 67 68 if (!m_node->rendererIsEditable()) 69 return; 70 71 ExceptionCode ec; 72 m_node->insertData(m_offset, m_text, ec); 73 74 if (AXObjectCache::accessibilityEnabled()) 75 document()->axObjectCache()->nodeTextChangeNotification(m_node->renderer(), AXObjectCache::AXTextInserted, m_offset, m_count); 76 } 77 78 } // namespace WebCore 79
