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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 "HTMLTitleElement.h"
#include "Document.h"
#include "HTMLNames.h"
#include "RenderStyle.h"
#include "Text.h"
namespace WebCore {
using namespace HTMLNames;
inline HTMLTitleElement::HTMLTitleElement(const QualifiedName& tagName, Document* document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(titleTag));
}
PassRefPtr<HTMLTitleElement> HTMLTitleElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new HTMLTitleElement(tagName, document));
}
void HTMLTitleElement::insertedIntoDocument()
{
HTMLElement::insertedIntoDocument();
document()->setTitleElement(m_title, this);
}
void HTMLTitleElement::removedFromDocument()
{
HTMLElement::removedFromDocument();
document()->removeTitle(this);
}
void HTMLTitleElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
m_title = textWithDirection();
if (inDocument())
document()->setTitleElement(m_title, this);
HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
}
String HTMLTitleElement::text() const
{
String val = "";
for (Node *n = firstChild(); n; n = n->nextSibling()) {
if (n->isTextNode())
val += static_cast<Text*>(n)->data();
}
return val;
}
StringWithDirection HTMLTitleElement::textWithDirection()
{
TextDirection direction = LTR;
if (RenderStyle* style = computedStyle())
direction = style->direction();
else if (RefPtr<RenderStyle> style = styleForRenderer())
direction = style->direction();
return StringWithDirection(text(), direction);
}
void HTMLTitleElement::setText(const String &value)
{
ExceptionCode ec = 0;
int numChildren = childNodeCount();
if (numChildren == 1 && firstChild()->isTextNode())
static_cast<Text*>(firstChild())->setData(value, ec);
else {
// We make a copy here because entity of "value" argument can be Document::m_title,
// which goes empty during removeChildren() invocation below,
// which causes HTMLTitleElement::childrenChanged(), which ends up Document::setTitle().
String valueCopy(value);
if (numChildren > 0)
removeChildren();
appendChild(document()->createTextNode(valueCopy.impl()), ec);
}
}
}
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