1 /*

     2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

     3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)

     4  *           (C) 2001 Dirk Mueller (mueller@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 "HTMLBaseElement.h"

    25 

    26 #include "Attribute.h"

    27 #include "CSSHelper.h"

    28 #include "Document.h"

    29 #include "Frame.h"

    30 #include "HTMLNames.h"

    31 #include "XSSAuditor.h"

    32 

    33 namespace WebCore {

    34 

    35 using namespace HTMLNames;

    36 

    37 inline HTMLBaseElement::HTMLBaseElement(const QualifiedName& tagName, Document* document)

    38     : HTMLElement(tagName, document)

    39 {

    40     ASSERT(hasTagName(baseTag));

    41 }

    42 

    43 PassRefPtr<HTMLBaseElement> HTMLBaseElement::create(const QualifiedName& tagName, Document* document)

    44 {

    45     return adoptRef(new HTMLBaseElement(tagName, document));

    46 }

    47 

    48 void HTMLBaseElement::parseMappedAttribute(Attribute* attr)

    49 {

    50     if (attr->name() == hrefAttr) {

    51         m_hrefAttrValue = attr->value();

    52         m_href = deprecatedParseURL(attr->value());

    53         process();

    54     } else if (attr->name() == targetAttr) {

    55         m_target = attr->value();

    56         process();

    57     } else

    58         HTMLElement::parseMappedAttribute(attr);

    59 }

    60 

    61 void HTMLBaseElement::insertedIntoDocument()

    62 {

    63     HTMLElement::insertedIntoDocument();

    64     process();

    65 }

    66 

    67 void HTMLBaseElement::removedFromDocument()

    68 {

    69     HTMLElement::removedFromDocument();

    70 

    71     // Since the document doesn't have a base element, clear the base URL and target.

    72     // FIXME: This does not handle the case of multiple base elements correctly.

    73     document()->setBaseElementURL(KURL());

    74     document()->setBaseElementTarget(String());

    75 }

    76 

    77 void HTMLBaseElement::process()

    78 {

    79     if (!inDocument())

    80         return;

    81 

    82     if (!m_href.isEmpty() && (!document()->frame() || document()->frame()->script()->xssAuditor()->canSetBaseElementURL(m_hrefAttrValue)))

    83         document()->setBaseElementURL(KURL(document()->url(), m_href));

    84 

    85     if (!m_target.isEmpty())

    86         document()->setBaseElementTarget(m_target);

    87 

    88     // FIXME: Changing a document's base URL should probably automatically update the resolved relative URLs of all images, stylesheets, etc.

    89 }

    90 

    91 }