HTMLTitleElement.cpp [plain text]
#include "config.h"
#include "HTMLTitleElement.h"
#include "Document.h"
#include "HTMLNames.h"
#include "NodeRenderingContext.h"
#include "RenderStyle.h"
#include "StyleInheritedData.h"
#include "Text.h"
#include <wtf/text/StringBuilder.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));
}
Node::InsertionNotificationRequest HTMLTitleElement::insertedInto(ContainerNode* insertionPoint)
{
HTMLElement::insertedInto(insertionPoint);
if (inDocument() && !isInShadowTree())
document()->setTitleElement(m_title, 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);
m_title = textWithDirection();
if (inDocument()) {
if (!isInShadowTree())
document()->setTitleElement(m_title, this);
else
document()->removeTitle(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();
}
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)
{
RefPtr<Node> protectFromMutationEvents(this);
int numChildren = childNodeCount();
if (numChildren == 1 && firstChild()->isTextNode())
toText(firstChild())->setData(value, IGNORE_EXCEPTION);
else {
String valueCopy(value);
if (numChildren > 0)
removeChildren();
appendChild(document()->createTextNode(valueCopy.impl()), IGNORE_EXCEPTION);
}
}
}