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      1 /*
      2  * Copyright (C) 2013 Google 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  *
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer
     12  *    in the documentation and/or other materials provided with the
     13  *    distribution.
     14  * 3. Neither the name of Google Inc. nor the names of its contributors
     15  *    may be used to endorse or promote products derived from this
     16  *    software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "core/dom/CustomElement.h"
     33 
     34 #include "HTMLNames.h"
     35 #include "MathMLNames.h"
     36 #include "RuntimeEnabledFeatures.h"
     37 #include "SVGNames.h"
     38 #include "core/dom/CustomElementCallbackScheduler.h"
     39 #include "core/dom/CustomElementUpgradeCandidateMap.h"
     40 #include "core/dom/Element.h"
     41 
     42 namespace WebCore {
     43 
     44 Vector<AtomicString>& CustomElement::embedderCustomElementNames()
     45 {
     46     DEFINE_STATIC_LOCAL(Vector<AtomicString>, names, ());
     47     return names;
     48 }
     49 
     50 void CustomElement::addEmbedderCustomElementName(const AtomicString& name)
     51 {
     52     AtomicString lower = name.lower();
     53     if (isValidName(lower, EmbedderNames))
     54         return;
     55     embedderCustomElementNames().append(lower);
     56 }
     57 
     58 static CustomElement::NameSet enabledNameSet()
     59 {
     60     return CustomElement::NameSet((RuntimeEnabledFeatures::customDOMElementsEnabled() ? CustomElement::StandardNames : 0) | (RuntimeEnabledFeatures::embedderCustomElementsEnabled() ? CustomElement::EmbedderNames : 0));
     61 }
     62 
     63 bool CustomElement::isValidName(const AtomicString& name, NameSet validNames)
     64 {
     65     validNames = NameSet(validNames & enabledNameSet());
     66 
     67     if ((validNames & EmbedderNames) && notFound != embedderCustomElementNames().find(name))
     68         return Document::isValidName(name);
     69 
     70     if ((validNames & StandardNames) && notFound != name.find('-')) {
     71         DEFINE_STATIC_LOCAL(Vector<AtomicString>, reservedNames, ());
     72         if (reservedNames.isEmpty()) {
     73             reservedNames.append(MathMLNames::annotation_xmlTag.localName());
     74             reservedNames.append(SVGNames::color_profileTag.localName());
     75             reservedNames.append(SVGNames::font_faceTag.localName());
     76             reservedNames.append(SVGNames::font_face_srcTag.localName());
     77             reservedNames.append(SVGNames::font_face_uriTag.localName());
     78             reservedNames.append(SVGNames::font_face_formatTag.localName());
     79             reservedNames.append(SVGNames::font_face_nameTag.localName());
     80             reservedNames.append(SVGNames::missing_glyphTag.localName());
     81         }
     82 
     83         if (notFound == reservedNames.find(name))
     84             return Document::isValidName(name.string());
     85     }
     86 
     87     return false;
     88 }
     89 
     90 void CustomElement::define(Element* element, PassRefPtr<CustomElementDefinition> passDefinition)
     91 {
     92     RefPtr<CustomElementDefinition> definition(passDefinition);
     93     element->setCustomElementState(Element::Defined);
     94     definitions().add(element, definition);
     95     CustomElementCallbackScheduler::scheduleCreatedCallback(definition->callbacks(), element);
     96 }
     97 
     98 CustomElementDefinition* CustomElement::definitionFor(Element* element)
     99 {
    100     return definitions().get(element);
    101 }
    102 
    103 void CustomElement::attributeDidChange(Element* element, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue)
    104 {
    105     ASSERT(element->customElementState() == Element::Upgraded);
    106     CustomElementCallbackScheduler::scheduleAttributeChangedCallback(definitions().get(element)->callbacks(), element, name, oldValue, newValue);
    107 }
    108 
    109 void CustomElement::didEnterDocument(Element* element, Document* document)
    110 {
    111     ASSERT(element->customElementState() == Element::Upgraded);
    112     if (!document->defaultView())
    113         return;
    114     CustomElementCallbackScheduler::scheduleEnteredDocumentCallback(definitions().get(element)->callbacks(), element);
    115 }
    116 
    117 void CustomElement::didLeaveDocument(Element* element, Document* document)
    118 {
    119     ASSERT(element->customElementState() == Element::Upgraded);
    120     if (!document->defaultView())
    121         return;
    122     CustomElementCallbackScheduler::scheduleLeftDocumentCallback(definitions().get(element)->callbacks(), element);
    123 }
    124 
    125 void CustomElement::wasDestroyed(Element* element)
    126 {
    127     switch (element->customElementState()) {
    128     case Element::NotCustomElement:
    129         ASSERT_NOT_REACHED();
    130         break;
    131 
    132     case Element::UpgradeCandidate:
    133         CustomElementUpgradeCandidateMap::elementWasDestroyed(element);
    134         break;
    135 
    136     case Element::Defined:
    137     case Element::Upgraded:
    138         definitions().remove(element);
    139         break;
    140     }
    141 }
    142 
    143 void CustomElement::DefinitionMap::add(Element* element, PassRefPtr<CustomElementDefinition> definition)
    144 {
    145     ASSERT(definition.get());
    146     DefinitionMap::ElementDefinitionHashMap::AddResult result = m_definitions.add(element, definition);
    147     ASSERT(result.isNewEntry);
    148 }
    149 
    150 void CustomElement::DefinitionMap::remove(Element* element)
    151 {
    152     m_definitions.remove(element);
    153 }
    154 
    155 CustomElementDefinition* CustomElement::DefinitionMap::get(Element* element)
    156 {
    157     DefinitionMap::ElementDefinitionHashMap::const_iterator it = m_definitions.find(element);
    158     ASSERT(it != m_definitions.end());
    159     return it->value.get();
    160 }
    161 
    162 CustomElement::DefinitionMap& CustomElement::definitions()
    163 {
    164     DEFINE_STATIC_LOCAL(DefinitionMap, map, ());
    165     return map;
    166 }
    167 
    168 } // namespace WebCore
    169