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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 "third_party/blink/renderer/core/html/html_title_element.h"
#include "base/auto_reset.h"
#include "third_party/blink/renderer/core/dom/child_list_mutation_scope.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/text.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
namespace blink {
using namespace HTMLNames;
inline HTMLTitleElement::HTMLTitleElement(Document& document)
: HTMLElement(titleTag, document),
ignore_title_updates_when_children_change_(false) {}
DEFINE_NODE_FACTORY(HTMLTitleElement)
Node::InsertionNotificationRequest HTMLTitleElement::InsertedInto(
ContainerNode* insertion_point) {
HTMLElement::InsertedInto(insertion_point);
if (IsInDocumentTree())
GetDocument().SetTitleElement(this);
return kInsertionDone;
}
void HTMLTitleElement::RemovedFrom(ContainerNode* insertion_point) {
HTMLElement::RemovedFrom(insertion_point);
if (insertion_point->IsInDocumentTree())
GetDocument().RemoveTitle(this);
}
void HTMLTitleElement::ChildrenChanged(const ChildrenChange& change) {
HTMLElement::ChildrenChanged(change);
if (IsInDocumentTree() && !ignore_title_updates_when_children_change_)
GetDocument().SetTitleElement(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) {
ChildListMutationScope mutation(*this);
{
// Avoid calling Document::setTitleElement() during intermediate steps.
base::AutoReset<bool> inhibit_title_update_scope(
&ignore_title_updates_when_children_change_, !value.IsEmpty());
RemoveChildren(kOmitSubtreeModifiedEvent);
}
if (!value.IsEmpty()) {
AppendChild(GetDocument().createTextNode(value.Impl()),
IGNORE_EXCEPTION_FOR_TESTING);
}
}
} // namespace blink
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