Split CustomElementRegistry into a registration context and a registry.

Source/core/dom/CustomElementRegistrationContext.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:
+ *
+ * 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.
+ */
+
+#ifndef CustomElementRegistrationContext_h
+#define CustomElementRegistrationContext_h
+
+#include "core/dom/CustomElementDescriptor.h"
+#include "core/dom/ExceptionCode.h"
+#include "core/dom/QualifiedName.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefPtr.h"
+#include "wtf/text/AtomicString.h"
+
+namespace WebCore {
+
+class CustomElementConstructorBuilder;
+class Document;
+class Element;
+
+class CustomElementRegistrationContext : public RefCounted<CustomElementRegistrationContext> {
+public:
+    static PassRefPtr<CustomElementRegistrationContext> nullRegistrationContext();
+    static PassRefPtr<CustomElementRegistrationContext> create();
+
+    virtual ~CustomElementRegistrationContext() { }
+
+    // Model
+    static bool isValidTypeName(const AtomicString& type);
+    static bool isCustomTagName(const AtomicString& localName);
+    virtual CustomElementDescriptor describe(Element*) const = 0;
+
+    // Definitions
+    virtual void registerElement(Document*, CustomElementConstructorBuilder*, const AtomicString& type, ExceptionCode&) = 0;
+
+    // Instance creation
+    virtual PassRefPtr<Element> createCustomTagElement(Document*, const QualifiedName&) = 0;
+    void setTypeExtension(Element*, const AtomicString& type);
+    virtual void didGiveTypeExtension(Element*, const AtomicString& type) = 0;
+
+    // Instance lifecycle
+    virtual void customElementAttributeDidChange(Element*, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue) = 0;
+    virtual void customElementDidEnterDocument(Element*) = 0;
+    virtual void customElementDidLeaveDocument(Element*) = 0;
+    virtual void customElementIsBeingDestroyed(Element*) = 0;
+
+protected:
+    CustomElementRegistrationContext() { }
+};
+
+}
+
+#endif // CustomElementRegistrationContext_h
+