File: V0CustomElement.cpp

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/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer
 *    in the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Google Inc. nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "core/dom/custom/V0CustomElement.h"

#include "core/HTMLNames.h"
#include "core/MathMLNames.h"
#include "core/SVGNames.h"
#include "core/dom/Document.h"
#include "core/dom/Element.h"
#include "core/dom/custom/V0CustomElementMicrotaskRunQueue.h"
#include "core/dom/custom/V0CustomElementObserver.h"
#include "core/dom/custom/V0CustomElementScheduler.h"

namespace blink {

V0CustomElementMicrotaskImportStep* V0CustomElement::didCreateImport(
    HTMLImportChild* import) {
  return V0CustomElementScheduler::scheduleImport(import);
}

void V0CustomElement::didFinishLoadingImport(Document& master) {
  master.customElementMicrotaskRunQueue()->requestDispatchIfNeeded();
}

Vector<AtomicString>& V0CustomElement::embedderCustomElementNames() {
  DEFINE_STATIC_LOCAL(Vector<AtomicString>, names, ());
  return names;
}

void V0CustomElement::addEmbedderCustomElementName(const AtomicString& name) {
  AtomicString lower = name.lower();
  if (isValidName(lower, EmbedderNames))
    return;
  embedderCustomElementNames().push_back(lower);
}

static inline bool isValidNCName(const AtomicString& name) {
  if (kNotFound != name.find(':'))
    return false;

  if (!name.getString().is8Bit()) {
    const UChar32 c = name.characters16()[0];
    // These characters comes under CombiningChar in NCName and according to
    // NCName only BaseChar and Ideodgraphic can come as first chars.
    // Also these characters come under Letter_Other in UnicodeData, thats
    // why they pass as valid document name.
    if (c == 0x0B83 || c == 0x0F88 || c == 0x0F89 || c == 0x0F8A || c == 0x0F8B)
      return false;
  }

  return Document::isValidName(name.getString());
}

bool V0CustomElement::isValidName(const AtomicString& name,
                                  NameSet validNames) {
  if ((validNames & EmbedderNames) &&
      kNotFound != embedderCustomElementNames().find(name))
    return Document::isValidName(name);

  if ((validNames & StandardNames) && kNotFound != name.find('-')) {
    DEFINE_STATIC_LOCAL(Vector<AtomicString>, reservedNames, ());
    if (reservedNames.isEmpty()) {
      // FIXME(crbug.com/426605): We should be able to remove this.
      reservedNames.push_back(MathMLNames::annotation_xmlTag.localName());
    }

    if (kNotFound == reservedNames.find(name))
      return isValidNCName(name);
  }

  return false;
}

void V0CustomElement::define(Element* element,
                             V0CustomElementDefinition* definition) {
  switch (element->getV0CustomElementState()) {
    case Element::V0NotCustomElement:
    case Element::V0Upgraded:
      NOTREACHED();
      break;

    case Element::V0WaitingForUpgrade:
      element->v0SetCustomElementDefinition(definition);
      V0CustomElementScheduler::scheduleCallback(
          definition->callbacks(), element,
          V0CustomElementLifecycleCallbacks::CreatedCallback);
      break;
  }
}

void V0CustomElement::attributeDidChange(Element* element,
                                         const AtomicString& name,
                                         const AtomicString& oldValue,
                                         const AtomicString& newValue) {
  DCHECK_EQ(element->getV0CustomElementState(), Element::V0Upgraded);
  V0CustomElementScheduler::scheduleAttributeChangedCallback(
      element->v0CustomElementDefinition()->callbacks(), element, name,
      oldValue, newValue);
}

void V0CustomElement::didAttach(Element* element, const Document& document) {
  DCHECK_EQ(element->getV0CustomElementState(), Element::V0Upgraded);
  if (!document.domWindow())
    return;
  V0CustomElementScheduler::scheduleCallback(
      element->v0CustomElementDefinition()->callbacks(), element,
      V0CustomElementLifecycleCallbacks::AttachedCallback);
}

void V0CustomElement::didDetach(Element* element, const Document& document) {
  DCHECK_EQ(element->getV0CustomElementState(), Element::V0Upgraded);
  if (!document.domWindow())
    return;
  V0CustomElementScheduler::scheduleCallback(
      element->v0CustomElementDefinition()->callbacks(), element,
      V0CustomElementLifecycleCallbacks::DetachedCallback);
}

void V0CustomElement::wasDestroyed(Element* element) {
  switch (element->getV0CustomElementState()) {
    case Element::V0NotCustomElement:
      NOTREACHED();
      break;

    case Element::V0WaitingForUpgrade:
    case Element::V0Upgraded:
      V0CustomElementObserver::notifyElementWasDestroyed(element);
      break;
  }
}

}  // namespace blink