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 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 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#include "Document.h" 29#include "ExceptionCodePlaceholder.h" 30 31#include "AXObjectCache.h" 32#include "Text.h" 33 34namespace WebCore { 35 36DeleteFromTextNodeCommand::DeleteFromTextNodeCommand(PassRefPtr<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 47void DeleteFromTextNodeCommand::doApply() 48{ 49 ASSERT(m_node); 50 51 if (!m_node->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable)) 52 return; 53 54 ExceptionCode ec = 0; 55 m_text = m_node->substringData(m_offset, m_count, ec); 56 if (ec) 57 return; 58 59 // Need to notify this before actually deleting the text 60 if (AXObjectCache* cache = document().existingAXObjectCache()) 61 cache->nodeTextChangeNotification(m_node.get(), AXObjectCache::AXTextDeleted, m_offset, m_text); 62 63 m_node->deleteData(m_offset, m_count, ec); 64} 65 66void DeleteFromTextNodeCommand::doUnapply() 67{ 68 ASSERT(m_node); 69 70 if (!m_node->hasEditableStyle()) 71 return; 72 73 m_node->insertData(m_offset, m_text, IGNORE_EXCEPTION); 74 75 if (AXObjectCache* cache = document().existingAXObjectCache()) 76 cache->nodeTextChangeNotification(m_node.get(), AXObjectCache::AXTextInserted, m_offset, m_text); 77} 78 79#ifndef NDEBUG 80void DeleteFromTextNodeCommand::getNodesInCommand(HashSet<Node*>& nodes) 81{ 82 addNodeAndDescendants(m_node.get(), nodes); 83} 84#endif 85 86} // namespace WebCore 87