Source/WebCore/editing/AppendNodeCommand.cpp

/*
 * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    documentation and/or other materials provided with the distribution.
 *
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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#include "config.h"
#include "AppendNodeCommand.h"

#include "AXObjectCache.h"
#include "htmlediting.h"

namespace WebCore {

AppendNodeCommand::AppendNodeCommand(PassRefPtr<ContainerNode> parent, PassRefPtr<Node> node)
    : SimpleEditCommand(parent->document())
    , m_parent(parent)
    , m_node(node)
{
    ASSERT(m_parent);
    ASSERT(m_node);
    ASSERT(!m_node->parentNode());

    ASSERT(m_parent->rendererIsEditable() || !m_parent->attached());
}

static void sendAXTextChangedIgnoringLineBreaks(Node* node, AXObjectCache::AXTextChange textChange)
{
    String nodeValue = node->nodeValue();
    unsigned len = nodeValue.length();
    // Don't consider linebreaks in this command
    if (nodeValue == "\n")
      return;

    node->document()->axObjectCache()->nodeTextChangeNotification(node->renderer(), textChange, 0, len);
}

void AppendNodeCommand::doApply()
{
    if (!m_parent->rendererIsEditable() && m_parent->attached())
        return;
        
    ExceptionCode ec;
    m_parent->appendChild(m_node.get(), ec);

    if (AXObjectCache::accessibilityEnabled())
        sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextInserted);
}

void AppendNodeCommand::doUnapply()
{
    if (!m_parent->rendererIsEditable())
        return;
        
    // Need to notify this before actually deleting the text
    if (AXObjectCache::accessibilityEnabled())
        sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextDeleted);

    ExceptionCode ec;
    m_node->remove(ec);
}

} // namespace WebCore