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

Source/core/dom/CustomElementUpgradeCandidateMap.h

 /*
  * 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
@@ skipping 10 matching lines @@
  * 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"
+#ifndef CustomElementUpgradeCandidateMap_h
+#define CustomElementUpgradeCandidateMap_h
 
-#include "core/dom/CustomElementConstructor.h"
-
-#include "core/dom/Document.h"
+#include "core/dom/CustomElementDefinition.h"
 #include "core/dom/Element.h"
+#include "wtf/HashMap.h"
+#include "wtf/HashSet.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/AtomicStringHash.h"
 
 namespace WebCore {
 
-PassRefPtr<CustomElementConstructor> CustomElementConstructor::create(Document* document, const QualifiedName& tag, const AtomicString& typeExtension) {
-    return adoptRef(new CustomElementConstructor(document, tag, typeExtension));
+class CustomElementUpgradeCandidateMap {
+    WTF_MAKE_NONCOPYABLE(CustomElementUpgradeCandidateMap);
+public:
+    CustomElementUpgradeCandidateMap() { }
+
+    typedef HashSet<Element*> ElementSet;
+
+    void add(CustomElementDefinition::CustomElementKind, const AtomicString& type, Element*);
+    bool contains(Element*) const;
+    void remove(Element*);
+    ElementSet takeUpgradeCandidatesFor(CustomElementDefinition* definition);
+
+private:
+    typedef std::pair<CustomElementDefinition::CustomElementKind, AtomicString> RequiredDefinition;
+    typedef HashMap<Element*, RequiredDefinition> UnresolvedElementMap;
+    typedef HashMap<AtomicString, ElementSet> UnresolvedDefinitionMap;
+
+    bool matches(CustomElementDefinition*, Element*);
+
+    UnresolvedElementMap m_unresolvedElements;
+    UnresolvedDefinitionMap m_unresolvedDefinitions;
+};
+
 }
 
-CustomElementConstructor::CustomElementConstructor(Document* document, const QualifiedName& tag, const AtomicString& typeExtension)
-    : ContextDestructionObserver(document)
-    , m_tag(tag)
-    , m_typeExtension(typeExtension)
-{
-}
+#endif // CustomElementUpgradeCandidateMap_h
 
-Document* CustomElementConstructor::document() const {
-    return toDocument(m_scriptExecutionContext);
-}
-
-PassRefPtr<Element> CustomElementConstructor::createElement(ExceptionCode& ec) {
-    if (!document())
-        return 0;
-    return document()->createElementNS(m_tag.namespaceURI(), m_tag.localName(), m_typeExtension, ec);
-}
-
-}