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 #ifdef ANDROID_META_SUPPORT
31 #include "PlatformBridge.h"
32 #include "Settings.h"
33 #endif
34
35 #if ENABLE(ANDROID_INSTALLABLE_WEB_APPS)
36 #include "ChromeClient.h"
37 #endif
38
39 namespace WebCore {
40
41 using namespace HTMLNames;
42
HTMLMetaElement(const QualifiedName & tagName,Document * document)43 inline HTMLMetaElement::HTMLMetaElement(const QualifiedName& tagName, Document* document)
44 : HTMLElement(tagName, document)
45 {
46 ASSERT(hasTagName(metaTag));
47 }
48
create(const QualifiedName & tagName,Document * document)49 PassRefPtr<HTMLMetaElement> HTMLMetaElement::create(const QualifiedName& tagName, Document* document)
50 {
51 return adoptRef(new HTMLMetaElement(tagName, document));
52 }
53
parseMappedAttribute(Attribute * attr)54 void HTMLMetaElement::parseMappedAttribute(Attribute* attr)
55 {
56 if (attr->name() == http_equivAttr) {
57 m_equiv = attr->value();
58 process();
59 } else if (attr->name() == contentAttr) {
60 m_content = attr->value();
61 process();
62 } else if (attr->name() == nameAttr) {
63 // Do nothing.
64 } else
65 HTMLElement::parseMappedAttribute(attr);
66 }
67
insertedIntoDocument()68 void HTMLMetaElement::insertedIntoDocument()
69 {
70 HTMLElement::insertedIntoDocument();
71 process();
72 }
73
process()74 void HTMLMetaElement::process()
75 {
76 if (!inDocument() || m_content.isNull())
77 return;
78 if (equalIgnoringCase(name(), "viewport"))
79 document()->processViewport(m_content);
80 #ifdef ANDROID_META_SUPPORT
81 // TODO: Evaluate whether to take upstreamed meta support
82 else if (equalIgnoringCase(name(), "format-detection"))
83 document()->processMetadataSettings(m_content);
84 else if (((equalIgnoringCase(name(), "HandheldFriendly") && equalIgnoringCase(m_content, "true")) || equalIgnoringCase(name(), "MobileOptimized"))
85 && document()->settings()
86 && document()->settings()->viewportWidth() == -1) {
87 // fit mobile sites directly in the screen
88 document()->processViewport("width=device-width");
89 }
90 #endif
91
92 #if ENABLE(ANDROID_INSTALLABLE_WEB_APPS)
93 // If this web site is informing us it is possible for it to be installed, inform the chrome
94 // client so it can offer this to the user.
95 if (equalIgnoringCase(name(), "fullscreen-web-app-capable")
96 && equalIgnoringCase(m_content, "yes")) {
97 if (Page* page = document()->page())
98 page->chrome()->client()->webAppCanBeInstalled();
99 }
100 #endif
101
102 // Get the document to process the tag, but only if we're actually part of DOM tree (changing a meta tag while
103 // it's not in the tree shouldn't have any effect on the document)
104 if (!m_equiv.isNull())
105 document()->processHttpEquiv(m_equiv, m_content);
106 }
107
content() const108 String HTMLMetaElement::content() const
109 {
110 return getAttribute(contentAttr);
111 }
112
httpEquiv() const113 String HTMLMetaElement::httpEquiv() const
114 {
115 return getAttribute(http_equivAttr);
116 }
117
name() const118 String HTMLMetaElement::name() const
119 {
120 return getAttribute(nameAttr);
121 }
122
123 }
124