Upgrade elements that are created before a custom element definition is registered

Source/core/dom/CustomElementUpgradeCandidateMap.cpp

+/*
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * 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 "config.h"
+
+#include "core/dom/CustomElementUpgradeCandidateMap.h"
+
+namespace WebCore {
+
+void CustomElementUpgradeCandidateMap::add(CustomElementDefinition::CustomElementKind kind, const AtomicString& type, Element* element)
+{
+    m_unresolvedElements.add(element, RequiredDefinition(kind, type));
+
+    UnresolvedDefinitionMap::iterator it = m_unresolvedDefinitions.find(type);
+    if (it == m_unresolvedDefinitions.end())
+        it = m_unresolvedDefinitions.add(type, ElementSet()).iterator;
+    it->value.add(element);
+}
+
+bool CustomElementUpgradeCandidateMap::contains(Element* element) const
+{
+    return m_unresolvedElements.contains(element);
+}
+
+void CustomElementUpgradeCandidateMap::remove(Element* element)
+{
+    UnresolvedElementMap::iterator it = m_unresolvedElements.find(element);
+    if (it == m_unresolvedElements.end())
+        return;
+
+    const AtomicString& type = it->value.second;
+    m_unresolvedDefinitions.get(type).remove(element);
+    m_unresolvedElements.remove(it);
+}
+
+CustomElementUpgradeCandidateMap::ElementSet CustomElementUpgradeCandidateMap::takeUpgradeCandidatesFor(CustomElementDefinition* definition)
+{
+    UnresolvedDefinitionMap::iterator it = m_unresolvedDefinitions.find(definition->type());
+    if (it == m_unresolvedDefinitions.end())
+        return ElementSet();
+
+    const ElementSet& candidatesForThisType = it->value;
+    ElementSet matchingCandidates;
+
+    // Filter the set based on whether the definition matches
+    for (ElementSet::const_iterator candidate = candidatesForThisType.begin(); candidate != candidatesForThisType.end(); ++candidate) {
+        if (matches(definition, *candidate)) {
+            matchingCandidates.add(*candidate);
+            m_unresolvedElements.remove(*candidate);
+        }
+    }
+
+    m_unresolvedDefinitions.remove(it);
+    return matchingCandidates;
+}
+
+bool CustomElementUpgradeCandidateMap::matches(CustomElementDefinition* definition, Element* element)
+{
+    ASSERT(m_unresolvedElements.contains(element));
+    const RequiredDefinition& requirement = m_unresolvedElements.get(element);
+    return definition->kind() == requirement.first && definition->type() == requirement.second && definition->namespaceURI() == element->namespaceURI() && definition->name() == element->localName();
+}
+
+}