1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2000 Stefan Schimanski (1Stein@gmx.de)
5 * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2011 Apple Inc. All rights reserved.
6 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 */
23
24 #include "config.h"
25 #include "HTMLEmbedElement.h"
26
27 #include "Attribute.h"
28 #include "CSSPropertyNames.h"
29 #include "DocumentLoader.h"
30 #include "Frame.h"
31 #include "HTMLDocument.h"
32 #include "HTMLImageLoader.h"
33 #include "HTMLNames.h"
34 #include "HTMLObjectElement.h"
35 #include "HTMLParserIdioms.h"
36 #include "MainResourceLoader.h"
37 #include "PluginDocument.h"
38 #include "RenderEmbeddedObject.h"
39 #include "RenderImage.h"
40 #include "RenderWidget.h"
41 #include "ScriptController.h"
42 #include "Settings.h"
43
44 namespace WebCore {
45
46 using namespace HTMLNames;
47
HTMLEmbedElement(const QualifiedName & tagName,Document * document,bool createdByParser)48 inline HTMLEmbedElement::HTMLEmbedElement(const QualifiedName& tagName, Document* document, bool createdByParser)
49 : HTMLPlugInImageElement(tagName, document, createdByParser, ShouldPreferPlugInsForImages)
50 {
51 ASSERT(hasTagName(embedTag));
52 }
53
create(const QualifiedName & tagName,Document * document,bool createdByParser)54 PassRefPtr<HTMLEmbedElement> HTMLEmbedElement::create(const QualifiedName& tagName, Document* document, bool createdByParser)
55 {
56 return adoptRef(new HTMLEmbedElement(tagName, document, createdByParser));
57 }
58
findWidgetRenderer(const Node * n)59 static inline RenderWidget* findWidgetRenderer(const Node* n)
60 {
61 if (!n->renderer())
62 do
63 n = n->parentNode();
64 while (n && !n->hasTagName(objectTag));
65
66 if (n && n->renderer() && n->renderer()->isWidget())
67 return toRenderWidget(n->renderer());
68
69 return 0;
70 }
71
renderWidgetForJSBindings() const72 RenderWidget* HTMLEmbedElement::renderWidgetForJSBindings() const
73 {
74 document()->updateLayoutIgnorePendingStylesheets();
75 return findWidgetRenderer(this);
76 }
77
mapToEntry(const QualifiedName & attrName,MappedAttributeEntry & result) const78 bool HTMLEmbedElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
79 {
80 if (attrName == hiddenAttr) {
81 result = eUniversal;
82 return false;
83 }
84
85 return HTMLPlugInImageElement::mapToEntry(attrName, result);
86 }
87
parseMappedAttribute(Attribute * attr)88 void HTMLEmbedElement::parseMappedAttribute(Attribute* attr)
89 {
90 const AtomicString& value = attr->value();
91
92 if (attr->name() == typeAttr) {
93 m_serviceType = value.string().lower();
94 size_t pos = m_serviceType.find(";");
95 if (pos != notFound)
96 m_serviceType = m_serviceType.left(pos);
97 if (!isImageType() && m_imageLoader)
98 m_imageLoader.clear();
99 } else if (attr->name() == codeAttr)
100 m_url = stripLeadingAndTrailingHTMLSpaces(value.string());
101 else if (attr->name() == srcAttr) {
102 m_url = stripLeadingAndTrailingHTMLSpaces(value.string());
103 if (renderer() && isImageType()) {
104 if (!m_imageLoader)
105 m_imageLoader = adoptPtr(new HTMLImageLoader(this));
106 m_imageLoader->updateFromElementIgnoringPreviousError();
107 }
108 } else if (attr->name() == hiddenAttr) {
109 if (equalIgnoringCase(value.string(), "yes") || equalIgnoringCase(value.string(), "true")) {
110 // FIXME: Not dynamic, since we add this but don't remove it, but it may be OK for now
111 // that this rarely-used attribute won't work properly if you remove it.
112 addCSSLength(attr, CSSPropertyWidth, "0");
113 addCSSLength(attr, CSSPropertyHeight, "0");
114 }
115 } else if (attr->name() == nameAttr) {
116 if (inDocument() && document()->isHTMLDocument()) {
117 HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
118 document->removeNamedItem(m_name);
119 document->addNamedItem(value);
120 }
121 m_name = value;
122 } else
123 HTMLPlugInImageElement::parseMappedAttribute(attr);
124 }
125
parametersForPlugin(Vector<String> & paramNames,Vector<String> & paramValues)126 void HTMLEmbedElement::parametersForPlugin(Vector<String>& paramNames, Vector<String>& paramValues)
127 {
128 NamedNodeMap* attributes = this->attributes(true);
129 if (!attributes)
130 return;
131
132 for (unsigned i = 0; i < attributes->length(); ++i) {
133 Attribute* it = attributes->attributeItem(i);
134 paramNames.append(it->localName().string());
135 paramValues.append(it->value().string());
136 }
137 }
138
139 // FIXME: This should be unified with HTMLObjectElement::updateWidget and
140 // moved down into HTMLPluginImageElement.cpp
updateWidget(PluginCreationOption pluginCreationOption)141 void HTMLEmbedElement::updateWidget(PluginCreationOption pluginCreationOption)
142 {
143 ASSERT(!renderEmbeddedObject()->pluginCrashedOrWasMissing());
144 // FIXME: We should ASSERT(needsWidgetUpdate()), but currently
145 // FrameView::updateWidget() calls updateWidget(false) without checking if
146 // the widget actually needs updating!
147 setNeedsWidgetUpdate(false);
148
149 if (m_url.isEmpty() && m_serviceType.isEmpty())
150 return;
151
152 // Note these pass m_url and m_serviceType to allow better code sharing with
153 // <object> which modifies url and serviceType before calling these.
154 if (!allowedToLoadFrameURL(m_url))
155 return;
156 // FIXME: It's sadness that we have this special case here.
157 // See http://trac.webkit.org/changeset/25128 and
158 // plugins/netscape-plugin-setwindow-size.html
159 if (pluginCreationOption == CreateOnlyNonNetscapePlugins && wouldLoadAsNetscapePlugin(m_url, m_serviceType))
160 return;
161
162 // FIXME: These should be joined into a PluginParameters class.
163 Vector<String> paramNames;
164 Vector<String> paramValues;
165 parametersForPlugin(paramNames, paramValues);
166
167 ASSERT(!m_inBeforeLoadEventHandler);
168 m_inBeforeLoadEventHandler = true;
169 bool beforeLoadAllowedLoad = dispatchBeforeLoadEvent(m_url);
170 m_inBeforeLoadEventHandler = false;
171
172 if (!beforeLoadAllowedLoad) {
173 if (document()->isPluginDocument()) {
174 // Plugins inside plugin documents load differently than other plugins. By the time
175 // we are here in a plugin document, the load of the plugin (which is the plugin document's
176 // main resource) has already started. We need to explicitly cancel the main resource load here.
177 toPluginDocument(document())->cancelManualPluginLoad();
178 }
179 return;
180 }
181
182 SubframeLoader* loader = document()->frame()->loader()->subframeLoader();
183 // FIXME: beforeLoad could have detached the renderer! Just like in the <object> case above.
184 loader->requestObject(this, m_url, getAttribute(nameAttr), m_serviceType, paramNames, paramValues);
185 }
186
rendererIsNeeded(RenderStyle * style)187 bool HTMLEmbedElement::rendererIsNeeded(RenderStyle* style)
188 {
189 if (isImageType())
190 return HTMLPlugInImageElement::rendererIsNeeded(style);
191
192 Frame* frame = document()->frame();
193 if (!frame)
194 return false;
195
196 // If my parent is an <object> and is not set to use fallback content, I
197 // should be ignored and not get a renderer.
198 ContainerNode* p = parentNode();
199 if (p && p->hasTagName(objectTag)) {
200 ASSERT(p->renderer());
201 if (!static_cast<HTMLObjectElement*>(p)->useFallbackContent()) {
202 ASSERT(!p->renderer()->isEmbeddedObject());
203 return false;
204 }
205 }
206
207 #if ENABLE(DASHBOARD_SUPPORT)
208 // Workaround for <rdar://problem/6642221>.
209 if (Settings* settings = frame->settings()) {
210 if (settings->usesDashboardBackwardCompatibilityMode())
211 return true;
212 }
213 #endif
214
215 return HTMLPlugInImageElement::rendererIsNeeded(style);
216 }
217
insertedIntoDocument()218 void HTMLEmbedElement::insertedIntoDocument()
219 {
220 HTMLPlugInImageElement::insertedIntoDocument();
221 if (!inDocument())
222 return;
223
224 if (document()->isHTMLDocument())
225 static_cast<HTMLDocument*>(document())->addNamedItem(m_name);
226
227 String width = getAttribute(widthAttr);
228 String height = getAttribute(heightAttr);
229 if (!width.isEmpty() || !height.isEmpty()) {
230 Node* n = parentNode();
231 while (n && !n->hasTagName(objectTag))
232 n = n->parentNode();
233 if (n) {
234 if (!width.isEmpty())
235 static_cast<HTMLObjectElement*>(n)->setAttribute(widthAttr, width);
236 if (!height.isEmpty())
237 static_cast<HTMLObjectElement*>(n)->setAttribute(heightAttr, height);
238 }
239 }
240 }
241
removedFromDocument()242 void HTMLEmbedElement::removedFromDocument()
243 {
244 if (document()->isHTMLDocument())
245 static_cast<HTMLDocument*>(document())->removeNamedItem(m_name);
246
247 HTMLPlugInImageElement::removedFromDocument();
248 }
249
attributeChanged(Attribute * attr,bool preserveDecls)250 void HTMLEmbedElement::attributeChanged(Attribute* attr, bool preserveDecls)
251 {
252 HTMLPlugInImageElement::attributeChanged(attr, preserveDecls);
253
254 if ((attr->name() == widthAttr || attr->name() == heightAttr) && !attr->isEmpty()) {
255 ContainerNode* n = parentNode();
256 while (n && !n->hasTagName(objectTag))
257 n = n->parentNode();
258 if (n)
259 static_cast<HTMLObjectElement*>(n)->setAttribute(attr->name(), attr->value());
260 }
261 }
262
isURLAttribute(Attribute * attr) const263 bool HTMLEmbedElement::isURLAttribute(Attribute* attr) const
264 {
265 return attr->name() == srcAttr;
266 }
267
imageSourceAttributeName() const268 const QualifiedName& HTMLEmbedElement::imageSourceAttributeName() const
269 {
270 return srcAttr;
271 }
272
addSubresourceAttributeURLs(ListHashSet<KURL> & urls) const273 void HTMLEmbedElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
274 {
275 HTMLPlugInImageElement::addSubresourceAttributeURLs(urls);
276
277 addSubresourceURL(urls, document()->completeURL(getAttribute(srcAttr)));
278 }
279
280 }
281