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, 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 "HTMLMetaElement.h"

    25 

    26 #include "Attribute.h"

    27 #include "Document.h"

    28 #include "HTMLNames.h"

    29 

    30 namespace WebCore {

    31 

    32 using namespace HTMLNames;

    33 

    34 inline HTMLMetaElement::HTMLMetaElement(const QualifiedName& tagName, Document* document)

    35     : HTMLElement(tagName, document)

    36 {

    37     ASSERT(hasTagName(metaTag));

    38 }

    39 

    40 PassRefPtr<HTMLMetaElement> HTMLMetaElement::create(const QualifiedName& tagName, Document* document)

    41 {

    42     return adoptRef(new HTMLMetaElement(tagName, document));

    43 }

    44 

    45 void HTMLMetaElement::parseMappedAttribute(Attribute* attr)

    46 {

    47     if (attr->name() == http_equivAttr) {

    48         m_equiv = attr->value();

    49         process();

    50     } else if (attr->name() == contentAttr) {

    51         m_content = attr->value();

    52         process();

    53     } else if (attr->name() == nameAttr) {

    54         // Do nothing.

    55     } else

    56         HTMLElement::parseMappedAttribute(attr);

    57 }

    58 

    59 void HTMLMetaElement::insertedIntoDocument()

    60 {

    61     HTMLElement::insertedIntoDocument();

    62     process();

    63 }

    64 

    65 void HTMLMetaElement::process()

    66 {

    67     if (!inDocument() || m_content.isNull())

    68         return;

    69 

    70     if (equalIgnoringCase(name(), "viewport"))

    71         document()->processViewport(m_content);

    72 

    73     // Get the document to process the tag, but only if we're actually part of DOM tree (changing a meta tag while

    74     // it's not in the tree shouldn't have any effect on the document)

    75     if (!m_equiv.isNull())

    76         document()->processHttpEquiv(m_equiv, m_content);

    77 }

    78 

    79 String HTMLMetaElement::content() const

    80 {

    81     return getAttribute(contentAttr);

    82 }

    83 

    84 String HTMLMetaElement::httpEquiv() const

    85 {

    86     return getAttribute(http_equivAttr);

    87 }

    88 

    89 String HTMLMetaElement::name() const

    90 {

    91     return getAttribute(nameAttr);

    92 }

    93 

    94 }