1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2001 Dirk Mueller (mueller (at) kde.org) 5 * Copyright (C) 2003, 2010 Apple Inc. All rights reserved. 6 * (C) 2007 Rob Buis (buis (at) kde.org) 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 "core/html/HTMLStyleElement.h" 26 27 #include "core/HTMLNames.h" 28 #include "core/css/MediaList.h" 29 #include "core/dom/Document.h" 30 #include "core/events/Event.h" 31 #include "core/events/EventSender.h" 32 #include "core/dom/shadow/ShadowRoot.h" 33 34 namespace blink { 35 36 using namespace HTMLNames; 37 38 static StyleEventSender& styleLoadEventSender() 39 { 40 DEFINE_STATIC_LOCAL(StyleEventSender, sharedLoadEventSender, (EventTypeNames::load)); 41 return sharedLoadEventSender; 42 } 43 44 inline HTMLStyleElement::HTMLStyleElement(Document& document, bool createdByParser) 45 : HTMLElement(styleTag, document) 46 , StyleElement(&document, createdByParser) 47 , m_firedLoad(false) 48 , m_loadedSheet(false) 49 { 50 } 51 52 HTMLStyleElement::~HTMLStyleElement() 53 { 54 #if !ENABLE(OILPAN) 55 StyleElement::clearDocumentData(document(), this); 56 #endif 57 58 styleLoadEventSender().cancelEvent(this); 59 } 60 61 PassRefPtrWillBeRawPtr<HTMLStyleElement> HTMLStyleElement::create(Document& document, bool createdByParser) 62 { 63 return adoptRefWillBeNoop(new HTMLStyleElement(document, createdByParser)); 64 } 65 66 void HTMLStyleElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 67 { 68 if (name == titleAttr && m_sheet) { 69 m_sheet->setTitle(value); 70 } else if (name == mediaAttr && inDocument() && document().isActive() && m_sheet) { 71 m_sheet->setMediaQueries(MediaQuerySet::create(value)); 72 document().modifiedStyleSheet(m_sheet.get()); 73 } else { 74 HTMLElement::parseAttribute(name, value); 75 } 76 } 77 78 void HTMLStyleElement::finishParsingChildren() 79 { 80 StyleElement::finishParsingChildren(this); 81 HTMLElement::finishParsingChildren(); 82 } 83 84 Node::InsertionNotificationRequest HTMLStyleElement::insertedInto(ContainerNode* insertionPoint) 85 { 86 HTMLElement::insertedInto(insertionPoint); 87 if (insertionPoint->inDocument() && isInShadowTree()) { 88 if (ShadowRoot* scope = containingShadowRoot()) 89 scope->registerScopedHTMLStyleChild(); 90 } 91 return InsertionShouldCallDidNotifySubtreeInsertions; 92 } 93 94 void HTMLStyleElement::removedFrom(ContainerNode* insertionPoint) 95 { 96 HTMLElement::removedFrom(insertionPoint); 97 98 if (!insertionPoint->inDocument()) 99 return; 100 101 ShadowRoot* scopingNode = containingShadowRoot(); 102 if (!scopingNode) 103 scopingNode = insertionPoint->containingShadowRoot(); 104 105 if (scopingNode) 106 scopingNode->unregisterScopedHTMLStyleChild(); 107 108 TreeScope* containingScope = containingShadowRoot(); 109 StyleElement::removedFromDocument(document(), this, scopingNode, containingScope ? *containingScope : insertionPoint->treeScope()); 110 } 111 112 void HTMLStyleElement::didNotifySubtreeInsertionsToDocument() 113 { 114 StyleElement::processStyleSheet(document(), this); 115 } 116 117 void HTMLStyleElement::childrenChanged(const ChildrenChange& change) 118 { 119 HTMLElement::childrenChanged(change); 120 StyleElement::childrenChanged(this); 121 } 122 123 const AtomicString& HTMLStyleElement::media() const 124 { 125 return getAttribute(mediaAttr); 126 } 127 128 const AtomicString& HTMLStyleElement::type() const 129 { 130 return getAttribute(typeAttr); 131 } 132 133 ContainerNode* HTMLStyleElement::scopingNode() 134 { 135 if (!inDocument()) 136 return 0; 137 138 if (isInShadowTree()) 139 return containingShadowRoot(); 140 141 return &document(); 142 } 143 144 void HTMLStyleElement::dispatchPendingLoadEvents() 145 { 146 styleLoadEventSender().dispatchPendingEvents(); 147 } 148 149 void HTMLStyleElement::dispatchPendingEvent(StyleEventSender* eventSender) 150 { 151 ASSERT_UNUSED(eventSender, eventSender == &styleLoadEventSender()); 152 dispatchEvent(Event::create(m_loadedSheet ? EventTypeNames::load : EventTypeNames::error)); 153 } 154 155 void HTMLStyleElement::notifyLoadedSheetAndAllCriticalSubresources(bool errorOccurred) 156 { 157 if (m_firedLoad) 158 return; 159 m_loadedSheet = !errorOccurred; 160 styleLoadEventSender().dispatchEventSoon(this); 161 m_firedLoad = true; 162 } 163 164 bool HTMLStyleElement::disabled() const 165 { 166 if (!m_sheet) 167 return false; 168 169 return m_sheet->disabled(); 170 } 171 172 void HTMLStyleElement::setDisabled(bool setDisabled) 173 { 174 if (CSSStyleSheet* styleSheet = sheet()) 175 styleSheet->setDisabled(setDisabled); 176 } 177 178 void HTMLStyleElement::trace(Visitor* visitor) 179 { 180 StyleElement::trace(visitor); 181 HTMLElement::trace(visitor); 182 } 183 184 } 185