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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2001 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2003, 2008, 2009, 2010 Apple Inc. All rights reserved.
      6  *
      7  * This library is free software; you can redistribute it and/or
      8  * modify it under the terms of the GNU Library General Public
      9  * License as published by the Free Software Foundation; either
     10  * version 2 of the License, or (at your option) any later version.
     11  *
     12  * This library is distributed in the hope that it will be useful,
     13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15  * Library General Public License for more details.
     16  *
     17  * You should have received a copy of the GNU Library General Public License
     18  * along with this library; see the file COPYING.LIB.  If not, write to
     19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20  * Boston, MA 02110-1301, USA.
     21  */
     22 
     23 #include "config.h"
     24 #include "core/html/HTMLBaseElement.h"
     25 
     26 #include "core/HTMLNames.h"
     27 #include "core/dom/Attribute.h"
     28 #include "core/dom/Document.h"
     29 #include "core/html/parser/HTMLParserIdioms.h"
     30 #include "core/html/parser/TextResourceDecoder.h"
     31 
     32 namespace blink {
     33 
     34 using namespace HTMLNames;
     35 
     36 inline HTMLBaseElement::HTMLBaseElement(Document& document)
     37     : HTMLElement(baseTag, document)
     38 {
     39 }
     40 
     41 DEFINE_NODE_FACTORY(HTMLBaseElement)
     42 
     43 void HTMLBaseElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     44 {
     45     if (name == hrefAttr || name == targetAttr)
     46         document().processBaseElement();
     47     else
     48         HTMLElement::parseAttribute(name, value);
     49 }
     50 
     51 Node::InsertionNotificationRequest HTMLBaseElement::insertedInto(ContainerNode* insertionPoint)
     52 {
     53     HTMLElement::insertedInto(insertionPoint);
     54     if (insertionPoint->inDocument())
     55         document().processBaseElement();
     56     return InsertionDone;
     57 }
     58 
     59 void HTMLBaseElement::removedFrom(ContainerNode* insertionPoint)
     60 {
     61     HTMLElement::removedFrom(insertionPoint);
     62     if (insertionPoint->inDocument())
     63         document().processBaseElement();
     64 }
     65 
     66 bool HTMLBaseElement::isURLAttribute(const Attribute& attribute) const
     67 {
     68     return attribute.name().localName() == hrefAttr || HTMLElement::isURLAttribute(attribute);
     69 }
     70 
     71 KURL HTMLBaseElement::href() const
     72 {
     73     // This does not use the getURLAttribute function because that will resolve relative to the document's base URL;
     74     // base elements like this one can be used to set that base URL. Thus we need to resolve relative to the document's
     75     // URL and ignore the base URL.
     76 
     77     const AtomicString& attributeValue = fastGetAttribute(hrefAttr);
     78     if (attributeValue.isNull())
     79         return document().url();
     80 
     81     KURL url = document().encoding().isValid() ?
     82         KURL(document().url(), stripLeadingAndTrailingHTMLSpaces(attributeValue)) :
     83         KURL(document().url(), stripLeadingAndTrailingHTMLSpaces(attributeValue), document().encoding());
     84 
     85     if (!url.isValid())
     86         return KURL();
     87 
     88     return url;
     89 }
     90 
     91 void HTMLBaseElement::setHref(const AtomicString& value)
     92 {
     93     setAttribute(hrefAttr, value);
     94 }
     95 
     96 }
     97