Share Custom Element registration contexts between related documents.

Source/core/dom/CustomElementRegistrationContextualizer.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 CustomElementRegistrationContextualizer_h
+#define CustomElementRegistrationContextualizer_h
+
+#include "core/dom/CustomElementRegistrationContext.h"
+#include "wtf/PassRefPtr.h"
+
+namespace WebCore {
+
+class Document;
+
+// This class sets up new documents with their Custom Elements
+// registration context.
+class CustomElementRegistrationContextualizer {
+public:
+    enum DocumentCreationReason {
+        DOMParser_parseFromString,
+        DocumentWithXSLTPI,
+        Loader,
+        XHR_responseXML,
+        XSLTProcessor_transformToDocument
+    };
+    static void didCreateDocument(DocumentCreationReason, Document*);
+
+    enum ContextualizedDocumentCreationReason {
+        DOMImplementation_createDocument, // and createHTMLDocument, via script
+        HTMLImport,
+        InspectorDOMPatch,
+        PasteboardFragment,
+        Template
+    };
+    static void didCreateRelatedDocument(PassRefPtr<CustomElementRegistrationContext> existingContext, ContextualizedDocumentCreationReason, Document*);
+
+private:
+    CustomElementRegistrationContextualizer();
+
+    static bool documentShouldProcessCustomElements(DocumentCreationReason, Document*);
+    static bool documentShouldProcessCustomElements(ContextualizedDocumentCreationReason, Document*);
+    static bool documentShouldShareRegistrationContext(ContextualizedDocumentCreationReason, Document*);
+};
+
+}
+
+#endif // CustomElementRegistrationContextualizer_h