1 /* 2 * Copyright (C) 2007, 2008, 2010 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 COMPUTER, 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 COMPUTER, 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 #include "core/html/HTMLSourceElement.h" 28 29 #include "core/HTMLNames.h" 30 #include "core/css/MediaList.h" 31 #include "core/css/MediaQueryList.h" 32 #include "core/css/MediaQueryMatcher.h" 33 #include "core/dom/Document.h" 34 #include "core/events/Event.h" 35 #include "core/events/EventSender.h" 36 #include "core/html/HTMLMediaElement.h" 37 #include "core/html/HTMLPictureElement.h" 38 #include "platform/Logging.h" 39 40 namespace blink { 41 42 using namespace HTMLNames; 43 44 static SourceEventSender& sourceErrorEventSender() 45 { 46 DEFINE_STATIC_LOCAL(SourceEventSender, sharedErrorEventSender, (EventTypeNames::error)); 47 return sharedErrorEventSender; 48 } 49 50 class HTMLSourceElement::Listener FINAL : public MediaQueryListListener { 51 public: 52 explicit Listener(HTMLSourceElement* element) : m_element(element) { } 53 virtual void notifyMediaQueryChanged() OVERRIDE 54 { 55 if (m_element) 56 m_element->notifyMediaQueryChanged(); 57 } 58 59 void clearElement() { m_element = nullptr; } 60 virtual void trace(Visitor* visitor) OVERRIDE 61 { 62 visitor->trace(m_element); 63 MediaQueryListListener::trace(visitor); 64 } 65 private: 66 RawPtrWillBeMember<HTMLSourceElement> m_element; 67 }; 68 69 inline HTMLSourceElement::HTMLSourceElement(Document& document) 70 : HTMLElement(sourceTag, document) 71 , m_listener(adoptRefWillBeNoop(new Listener(this))) 72 { 73 WTF_LOG(Media, "HTMLSourceElement::HTMLSourceElement - %p", this); 74 } 75 76 DEFINE_NODE_FACTORY(HTMLSourceElement) 77 78 HTMLSourceElement::~HTMLSourceElement() 79 { 80 sourceErrorEventSender().cancelEvent(this); 81 #if !ENABLE(OILPAN) 82 m_listener->clearElement(); 83 #endif 84 } 85 86 Node::InsertionNotificationRequest HTMLSourceElement::insertedInto(ContainerNode* insertionPoint) 87 { 88 HTMLElement::insertedInto(insertionPoint); 89 Element* parent = parentElement(); 90 if (isHTMLMediaElement(parent)) 91 toHTMLMediaElement(parent)->sourceWasAdded(this); 92 if (isHTMLPictureElement(parent)) 93 toHTMLPictureElement(parent)->sourceOrMediaChanged(); 94 return InsertionDone; 95 } 96 97 void HTMLSourceElement::removedFrom(ContainerNode* removalRoot) 98 { 99 Element* parent = parentElement(); 100 if (!parent && removalRoot->isElementNode()) 101 parent = toElement(removalRoot); 102 if (isHTMLMediaElement(parent)) 103 toHTMLMediaElement(parent)->sourceWasRemoved(this); 104 if (isHTMLPictureElement(parent)) 105 toHTMLPictureElement(parent)->sourceOrMediaChanged(); 106 HTMLElement::removedFrom(removalRoot); 107 } 108 109 void HTMLSourceElement::setSrc(const String& url) 110 { 111 setAttribute(srcAttr, AtomicString(url)); 112 } 113 114 const AtomicString& HTMLSourceElement::type() const 115 { 116 return getAttribute(typeAttr); 117 } 118 119 void HTMLSourceElement::setType(const AtomicString& type) 120 { 121 setAttribute(typeAttr, type); 122 } 123 124 void HTMLSourceElement::scheduleErrorEvent() 125 { 126 WTF_LOG(Media, "HTMLSourceElement::scheduleErrorEvent - %p", this); 127 sourceErrorEventSender().dispatchEventSoon(this); 128 } 129 130 void HTMLSourceElement::cancelPendingErrorEvent() 131 { 132 WTF_LOG(Media, "HTMLSourceElement::cancelPendingErrorEvent - %p", this); 133 sourceErrorEventSender().cancelEvent(this); 134 } 135 136 void HTMLSourceElement::dispatchPendingEvent(SourceEventSender* eventSender) 137 { 138 ASSERT_UNUSED(eventSender, eventSender == &sourceErrorEventSender()); 139 WTF_LOG(Media, "HTMLSourceElement::dispatchPendingEvent - %p", this); 140 dispatchEvent(Event::createCancelable(EventTypeNames::error)); 141 } 142 143 bool HTMLSourceElement::mediaQueryMatches() const 144 { 145 if (!m_mediaQueryList) 146 return true; 147 148 return m_mediaQueryList->matches(); 149 } 150 151 bool HTMLSourceElement::isURLAttribute(const Attribute& attribute) const 152 { 153 return attribute.name() == srcAttr || HTMLElement::isURLAttribute(attribute); 154 } 155 156 void HTMLSourceElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 157 { 158 HTMLElement::parseAttribute(name, value); 159 if (name == mediaAttr) { 160 if (m_mediaQueryList) 161 m_mediaQueryList->removeListener(m_listener); 162 RefPtrWillBeRawPtr<MediaQuerySet> set = MediaQuerySet::create(value); 163 m_mediaQueryList = MediaQueryList::create(&document(), &document().mediaQueryMatcher(), set.release()); 164 m_mediaQueryList->addListener(m_listener); 165 } 166 if (name == srcsetAttr || name == sizesAttr || name == mediaAttr || name == typeAttr) { 167 Element* parent = parentElement(); 168 if (isHTMLPictureElement(parent)) 169 toHTMLPictureElement(parent)->sourceOrMediaChanged(); 170 } 171 } 172 173 void HTMLSourceElement::notifyMediaQueryChanged() 174 { 175 Element* parent = parentElement(); 176 if (isHTMLPictureElement(parent)) 177 toHTMLPictureElement(parent)->sourceOrMediaChanged(); 178 } 179 180 void HTMLSourceElement::trace(Visitor* visitor) 181 { 182 visitor->trace(m_mediaQueryList); 183 visitor->trace(m_listener); 184 HTMLElement::trace(visitor); 185 } 186 187 } 188