File: HTMLBaseElement.cpp

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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, 2008, 2009, 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 "core/html/HTMLBaseElement.h"

#include "core/HTMLNames.h"
#include "core/dom/Attribute.h"
#include "core/dom/Document.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/html/parser/TextResourceDecoder.h"

namespace blink {

using namespace HTMLNames;

inline HTMLBaseElement::HTMLBaseElement(Document& document)
    : HTMLElement(baseTag, document) {}

DEFINE_NODE_FACTORY(HTMLBaseElement)

void HTMLBaseElement::parseAttribute(
    const AttributeModificationParams& params) {
  if (params.name == hrefAttr || params.name == targetAttr)
    document().processBaseElement();
  else
    HTMLElement::parseAttribute(params);
}

Node::InsertionNotificationRequest HTMLBaseElement::insertedInto(
    ContainerNode* insertionPoint) {
  HTMLElement::insertedInto(insertionPoint);
  if (insertionPoint->isConnected())
    document().processBaseElement();
  return InsertionDone;
}

void HTMLBaseElement::removedFrom(ContainerNode* insertionPoint) {
  HTMLElement::removedFrom(insertionPoint);
  if (insertionPoint->isConnected())
    document().processBaseElement();
}

bool HTMLBaseElement::isURLAttribute(const Attribute& attribute) const {
  return attribute.name().localName() == hrefAttr ||
         HTMLElement::isURLAttribute(attribute);
}

KURL HTMLBaseElement::href() const {
  // This does not use the getURLAttribute function because that will resolve
  // relative to the document's base URL; base elements like this one can be
  // used to set that base URL. Thus we need to resolve relative to the
  // document's URL and ignore the base URL.

  const AtomicString& attributeValue = fastGetAttribute(hrefAttr);
  if (attributeValue.isNull())
    return document().url();

  KURL url = document().encoding().isValid()
                 ? KURL(document().url(),
                        stripLeadingAndTrailingHTMLSpaces(attributeValue))
                 : KURL(document().url(),
                        stripLeadingAndTrailingHTMLSpaces(attributeValue),
                        document().encoding());

  if (!url.isValid())
    return KURL();

  return url;
}

void HTMLBaseElement::setHref(const AtomicString& value) {
  setAttribute(hrefAttr, value);
}

}  // namespace blink