1 /*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #if ENABLE(VIDEO)
29 #include "MediaDocument.h"
30
31 #include "DocumentLoader.h"
32 #include "EventNames.h"
33 #include "Frame.h"
34 #include "FrameLoaderClient.h"
35 #include "HTMLEmbedElement.h"
36 #include "HTMLHtmlElement.h"
37 #include "HTMLNames.h"
38 #include "HTMLVideoElement.h"
39 #include "KeyboardEvent.h"
40 #include "MainResourceLoader.h"
41 #include "NodeList.h"
42 #include "RawDataDocumentParser.h"
43
44 namespace WebCore {
45
46 using namespace HTMLNames;
47
48 // FIXME: Share more code with PluginDocumentParser.
49 class MediaDocumentParser : public RawDataDocumentParser {
50 public:
create(MediaDocument * document)51 static PassRefPtr<MediaDocumentParser> create(MediaDocument* document)
52 {
53 return adoptRef(new MediaDocumentParser(document));
54 }
55
56 private:
MediaDocumentParser(Document * document)57 MediaDocumentParser(Document* document)
58 : RawDataDocumentParser(document)
59 , m_mediaElement(0)
60 {
61 }
62
63 virtual void appendBytes(DocumentWriter*, const char*, int, bool);
64
65 void createDocumentStructure();
66
67 HTMLMediaElement* m_mediaElement;
68 };
69
createDocumentStructure()70 void MediaDocumentParser::createDocumentStructure()
71 {
72 ExceptionCode ec;
73 RefPtr<Element> rootElement = document()->createElement(htmlTag, false);
74 document()->appendChild(rootElement, ec);
75 #if ENABLE(OFFLINE_WEB_APPLICATIONS)
76 static_cast<HTMLHtmlElement*>(rootElement.get())->insertedByParser();
77 #endif
78
79 if (document()->frame())
80 document()->frame()->loader()->dispatchDocumentElementAvailable();
81
82 RefPtr<Element> body = document()->createElement(bodyTag, false);
83 body->setAttribute(styleAttr, "background-color: rgb(38,38,38);");
84
85 rootElement->appendChild(body, ec);
86
87 RefPtr<Element> mediaElement = document()->createElement(videoTag, false);
88
89 m_mediaElement = static_cast<HTMLVideoElement*>(mediaElement.get());
90 m_mediaElement->setAttribute(controlsAttr, "");
91 m_mediaElement->setAttribute(autoplayAttr, "");
92 m_mediaElement->setAttribute(styleAttr, "margin: auto; position: absolute; top: 0; right: 0; bottom: 0; left: 0;");
93
94 m_mediaElement->setAttribute(nameAttr, "media");
95 m_mediaElement->setSrc(document()->url());
96
97 body->appendChild(mediaElement, ec);
98
99 Frame* frame = document()->frame();
100 if (!frame)
101 return;
102
103 frame->loader()->activeDocumentLoader()->mainResourceLoader()->setShouldBufferData(false);
104 }
105
appendBytes(DocumentWriter *,const char *,int,bool)106 void MediaDocumentParser::appendBytes(DocumentWriter*, const char*, int, bool)
107 {
108 ASSERT(!m_mediaElement);
109 if (m_mediaElement)
110 return;
111
112 createDocumentStructure();
113 finish();
114 }
115
MediaDocument(Frame * frame,const KURL & url)116 MediaDocument::MediaDocument(Frame* frame, const KURL& url)
117 : HTMLDocument(frame, url)
118 , m_replaceMediaElementTimer(this, &MediaDocument::replaceMediaElementTimerFired)
119 {
120 setCompatibilityMode(QuirksMode);
121 lockCompatibilityMode();
122 }
123
~MediaDocument()124 MediaDocument::~MediaDocument()
125 {
126 ASSERT(!m_replaceMediaElementTimer.isActive());
127 }
128
createParser()129 PassRefPtr<DocumentParser> MediaDocument::createParser()
130 {
131 return MediaDocumentParser::create(this);
132 }
133
descendentVideoElement(Node * node)134 static inline HTMLVideoElement* descendentVideoElement(Node* node)
135 {
136 ASSERT(node);
137
138 if (node->hasTagName(videoTag))
139 return static_cast<HTMLVideoElement*>(node);
140
141 RefPtr<NodeList> nodeList = node->getElementsByTagNameNS(videoTag.namespaceURI(), videoTag.localName());
142
143 if (nodeList.get()->length() > 0)
144 return static_cast<HTMLVideoElement*>(nodeList.get()->item(0));
145
146 return 0;
147 }
148
defaultEventHandler(Event * event)149 void MediaDocument::defaultEventHandler(Event* event)
150 {
151 // Match the default Quicktime plugin behavior to allow
152 // clicking and double-clicking to pause and play the media.
153 Node* targetNode = event->target()->toNode();
154 if (!targetNode)
155 return;
156
157 HTMLVideoElement* video = descendentVideoElement(targetNode);
158 if (!video)
159 return;
160
161 if (event->type() == eventNames().clickEvent) {
162 if (!video->canPlay()) {
163 video->pause(event->fromUserGesture());
164 event->setDefaultHandled();
165 }
166 } else if (event->type() == eventNames().dblclickEvent) {
167 if (video->canPlay()) {
168 video->play(event->fromUserGesture());
169 event->setDefaultHandled();
170 }
171 } else if (event->type() == eventNames().keydownEvent && event->isKeyboardEvent()) {
172 KeyboardEvent* keyboardEvent = static_cast<KeyboardEvent*>(event);
173 if (keyboardEvent->keyIdentifier() == "U+0020") { // space
174 if (video->paused()) {
175 if (video->canPlay())
176 video->play(event->fromUserGesture());
177 } else
178 video->pause(event->fromUserGesture());
179 event->setDefaultHandled();
180 }
181 }
182 }
183
mediaElementSawUnsupportedTracks()184 void MediaDocument::mediaElementSawUnsupportedTracks()
185 {
186 // The HTMLMediaElement was told it has something that the underlying
187 // MediaPlayer cannot handle so we should switch from <video> to <embed>
188 // and let the plugin handle this. Don't do it immediately as this
189 // function may be called directly from a media engine callback, and
190 // replaceChild will destroy the element, media player, and media engine.
191 m_replaceMediaElementTimer.startOneShot(0);
192 }
193
replaceMediaElementTimerFired(Timer<MediaDocument> *)194 void MediaDocument::replaceMediaElementTimerFired(Timer<MediaDocument>*)
195 {
196 HTMLElement* htmlBody = body();
197 if (!htmlBody)
198 return;
199
200 // Set body margin width and height to 0 as that is what a PluginDocument uses.
201 htmlBody->setAttribute(marginwidthAttr, "0");
202 htmlBody->setAttribute(marginheightAttr, "0");
203
204 if (HTMLVideoElement* videoElement = descendentVideoElement(htmlBody)) {
205 RefPtr<Element> element = Document::createElement(embedTag, false);
206 HTMLEmbedElement* embedElement = static_cast<HTMLEmbedElement*>(element.get());
207
208 embedElement->setAttribute(widthAttr, "100%");
209 embedElement->setAttribute(heightAttr, "100%");
210 embedElement->setAttribute(nameAttr, "plugin");
211 embedElement->setAttribute(srcAttr, url().string());
212
213 DocumentLoader* documentLoader = loader();
214 ASSERT(documentLoader);
215 if (documentLoader)
216 embedElement->setAttribute(typeAttr, documentLoader->writer()->mimeType());
217
218 ExceptionCode ec;
219 videoElement->parentNode()->replaceChild(embedElement, videoElement, ec);
220 }
221 }
222
223 }
224 #endif
225