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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/custom/CustomElement.h"
     33 
     34 #include "HTMLNames.h"
     35 #include "MathMLNames.h"
     36 #include "RuntimeEnabledFeatures.h"
     37 #include "SVGNames.h"
     38 #include "core/dom/Element.h"
     39 #include "core/dom/custom/CustomElementCallbackScheduler.h"
     40 #include "core/dom/custom/CustomElementObserver.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::customElementsEnabled() ? 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) && kNotFound != embedderCustomElementNames().find(name))
     68         return Document::isValidName(name);
     69 
     70     if ((validNames & StandardNames) && kNotFound != name.find('-')) {
     71         DEFINE_STATIC_LOCAL(Vector<AtomicString>, reservedNames, ());
     72         if (reservedNames.isEmpty()) {
     73             reservedNames.append(MathMLNames::annotation_xmlTag.localName());
     74             // In principle, "color-profile" should exist in the SVGNames
     75             // namespace, but we don't implement the color-profile element.
     76             reservedNames.append("color-profile");
     77             reservedNames.append(SVGNames::font_faceTag.localName());
     78             reservedNames.append(SVGNames::font_face_srcTag.localName());
     79             reservedNames.append(SVGNames::font_face_uriTag.localName());
     80             reservedNames.append(SVGNames::font_face_formatTag.localName());
     81             reservedNames.append(SVGNames::font_face_nameTag.localName());
     82             reservedNames.append(SVGNames::missing_glyphTag.localName());
     83         }
     84 
     85         if (kNotFound == reservedNames.find(name))
     86             return Document::isValidName(name.string());
     87     }
     88 
     89     return false;
     90 }
     91 
     92 void CustomElement::define(Element* element, PassRefPtr<CustomElementDefinition> passDefinition)
     93 {
     94     RefPtr<CustomElementDefinition> definition(passDefinition);
     95 
     96     switch (element->customElementState()) {
     97     case Element::NotCustomElement:
     98     case Element::Upgraded:
     99         ASSERT_NOT_REACHED();
    100         break;
    101 
    102     case Element::WaitingForUpgrade:
    103         definitions().add(element, definition);
    104         CustomElementCallbackScheduler::scheduleCreatedCallback(definition->callbacks(), element);
    105         break;
    106     }
    107 }
    108 
    109 CustomElementDefinition* CustomElement::definitionFor(Element* element)
    110 {
    111     CustomElementDefinition* definition = definitions().get(element);
    112     ASSERT(definition);
    113     return definition;
    114 }
    115 
    116 void CustomElement::attributeDidChange(Element* element, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue)
    117 {
    118     ASSERT(element->customElementState() == Element::Upgraded);
    119     CustomElementCallbackScheduler::scheduleAttributeChangedCallback(definitionFor(element)->callbacks(), element, name, oldValue, newValue);
    120 }
    121 
    122 void CustomElement::didEnterDocument(Element* element, const Document& document)
    123 {
    124     ASSERT(element->customElementState() == Element::Upgraded);
    125     if (!document.domWindow())
    126         return;
    127     CustomElementCallbackScheduler::scheduleAttachedCallback(definitionFor(element)->callbacks(), element);
    128 }
    129 
    130 void CustomElement::didLeaveDocument(Element* element, const Document& document)
    131 {
    132     ASSERT(element->customElementState() == Element::Upgraded);
    133     if (!document.domWindow())
    134         return;
    135     CustomElementCallbackScheduler::scheduleDetachedCallback(definitionFor(element)->callbacks(), element);
    136 }
    137 
    138 void CustomElement::wasDestroyed(Element* element)
    139 {
    140     switch (element->customElementState()) {
    141     case Element::NotCustomElement:
    142         ASSERT_NOT_REACHED();
    143         break;
    144 
    145     case Element::WaitingForUpgrade:
    146     case Element::Upgraded:
    147         definitions().remove(element);
    148         CustomElementObserver::notifyElementWasDestroyed(element);
    149         break;
    150     }
    151 }
    152 
    153 void CustomElement::DefinitionMap::add(Element* element, PassRefPtr<CustomElementDefinition> definition)
    154 {
    155     ASSERT(definition.get());
    156     DefinitionMap::ElementDefinitionHashMap::AddResult result = m_definitions.add(element, definition);
    157     ASSERT_UNUSED(result, result.isNewEntry);
    158 }
    159 
    160 CustomElement::DefinitionMap& CustomElement::definitions()
    161 {
    162     DEFINE_STATIC_LOCAL(DefinitionMap, map, ());
    163     return map;
    164 }
    165 
    166 } // namespace WebCore
    167