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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003, 2010 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/html/HTMLTitleElement.h"
#include "bindings/v8/ExceptionStatePlaceholder.h"
#include "core/HTMLNames.h"
#include "core/dom/ChildListMutationScope.h"
#include "core/dom/Document.h"
#include "core/dom/Text.h"
#include "core/rendering/style/RenderStyle.h"
#include "core/rendering/style/StyleInheritedData.h"
#include "wtf/text/StringBuilder.h"
namespace WebCore {
using namespace HTMLNames;
inline HTMLTitleElement::HTMLTitleElement(Document& document)
: HTMLElement(titleTag, document)
, m_ignoreTitleUpdatesWhenChildrenChange(false)
{
setHasCustomStyleCallbacks();
ScriptWrappable::init(this);
}
DEFINE_NODE_FACTORY(HTMLTitleElement)
Node::InsertionNotificationRequest HTMLTitleElement::insertedInto(ContainerNode* insertionPoint)
{
HTMLElement::insertedInto(insertionPoint);
if (inDocument() && !isInShadowTree())
document().setTitleElement(text(), this);
return InsertionDone;
}
void HTMLTitleElement::removedFrom(ContainerNode* insertionPoint)
{
HTMLElement::removedFrom(insertionPoint);
if (insertionPoint->inDocument() && !insertionPoint->isInShadowTree())
document().removeTitle(this);
}
void HTMLTitleElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
if (inDocument() && !isInShadowTree() && !m_ignoreTitleUpdatesWhenChildrenChange)
document().setTitleElement(text(), this);
}
String HTMLTitleElement::text() const
{
StringBuilder result;
for (Node *n = firstChild(); n; n = n->nextSibling()) {
if (n->isTextNode())
result.append(toText(n)->data());
}
return result.toString();
}
void HTMLTitleElement::setText(const String &value)
{
RefPtrWillBeRawPtr<Node> protectFromMutationEvents(this);
ChildListMutationScope mutation(*this);
// Avoid calling Document::setTitleElement() during intermediate steps.
m_ignoreTitleUpdatesWhenChildrenChange = !value.isEmpty();
removeChildren();
m_ignoreTitleUpdatesWhenChildrenChange = false;
if (!value.isEmpty())
appendChild(document().createTextNode(value.impl()), IGNORE_EXCEPTION);
}
}
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