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
30namespace WebCore {
31
32using namespace HTMLNames;
33
34inline HTMLMetaElement::HTMLMetaElement(const QualifiedName& tagName, Document* document)
35    : HTMLElement(tagName, document)
36{
37    ASSERT(hasTagName(metaTag));
38}
39
40PassRefPtr<HTMLMetaElement> HTMLMetaElement::create(const QualifiedName& tagName, Document* document)
41{
42    return adoptRef(new HTMLMetaElement(tagName, document));
43}
44
45void HTMLMetaElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
46{
47    if (name == http_equivAttr)
48        process();
49    else if (name == contentAttr)
50        process();
51    else if (name == nameAttr) {
52        // Do nothing
53    } else
54        HTMLElement::parseAttribute(name, value);
55}
56
57Node::InsertionNotificationRequest HTMLMetaElement::insertedInto(ContainerNode* insertionPoint)
58{
59    HTMLElement::insertedInto(insertionPoint);
60    if (insertionPoint->inDocument())
61        process();
62    return InsertionDone;
63}
64
65void HTMLMetaElement::process()
66{
67    if (!inDocument())
68        return;
69
70    const AtomicString& contentValue = fastGetAttribute(contentAttr);
71    if (contentValue.isNull())
72        return;
73
74    if (equalIgnoringCase(name(), "viewport"))
75        document()->processViewport(contentValue, ViewportArguments::ViewportMeta);
76    else if (equalIgnoringCase(name(), "referrer"))
77        document()->processReferrerPolicy(contentValue);
78#if ENABLE(LEGACY_VIEWPORT_ADAPTION)
79    else if (equalIgnoringCase(name(), "handheldfriendly") && equalIgnoringCase(contentValue, "true"))
80        document()->processViewport("width=device-width", ViewportArguments::HandheldFriendlyMeta);
81    else if (equalIgnoringCase(name(), "mobileoptimized"))
82        document()->processViewport("width=device-width, initial-scale=1", ViewportArguments::MobileOptimizedMeta);
83#endif
84
85    // Get the document to process the tag, but only if we're actually part of DOM tree (changing a meta tag while
86    // it's not in the tree shouldn't have any effect on the document)
87    const AtomicString& httpEquivValue = fastGetAttribute(http_equivAttr);
88    if (!httpEquivValue.isNull())
89        document()->processHttpEquiv(httpEquivValue, contentValue);
90}
91
92String HTMLMetaElement::content() const
93{
94    return getAttribute(contentAttr);
95}
96
97String HTMLMetaElement::httpEquiv() const
98{
99    return getAttribute(http_equivAttr);
100}
101
102String HTMLMetaElement::name() const
103{
104    return getNameAttribute();
105}
106
107#if ENABLE(MICRODATA)
108String HTMLMetaElement::itemValueText() const
109{
110    return getAttribute(contentAttr);
111}
112
113void HTMLMetaElement::setItemValueText(const String& value, ExceptionCode&)
114{
115    setAttribute(contentAttr, value);
116}
117#endif
118
119}
120