Index: third_party/WebKit/Source/core/dom/custom/CustomElementDefinitionBuilder.h |
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElementDefinitionBuilder.h b/third_party/WebKit/Source/core/dom/custom/CustomElementDefinitionBuilder.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CustomElementDefinitionBuilder_h |
+#define CustomElementDefinitionBuilder_h |
+ |
+#include "core/CoreExport.h" |
+#include "wtf/Allocator.h" |
+#include "wtf/Noncopyable.h" |
+ |
+namespace blink { |
+ |
+class CustomElementDefinition; |
+class CustomElementDescriptor; |
+class CustomElementsRegistry; |
+class ExceptionState; |
+class ScriptState; |
+class ScriptValue; |
+ |
+// Implement CustomElementDefinitionBuilder to provide |
+// technology-specific steps for CustomElementsRegistry.define. |
+// https://html.spec.whatwg.org/multipage/scripting.html#dom-customelementsregistry-define |
+class CORE_EXPORT CustomElementDefinitionBuilder { |
+ STACK_ALLOCATED(); |
+ WTF_MAKE_NONCOPYABLE(CustomElementDefinitionBuilder); |
+public: |
+ CustomElementDefinitionBuilder() { } |
+ |
+ // This API necessarily sounds JavaScript specific; this implements |
+ // some steps of the CustomElementsRegistry.define process, which |
+ // are defined in terms of JavaScript. |
+ |
+ // Check the constructor is valid. Return false if processing |
+ // should not proceed. |
+ virtual bool checkConstructorIntrinsics() = 0; |
+ |
+ // Check the constructor is not already registered in the calling |
+ // registry. Return false if processing should not proceed. |
+ virtual bool checkConstructorNotRegistered() = 0; |
+ |
+ // Checking the prototype may destroy the window. Return false if |
+ // processing should not proceed. |
+ virtual bool checkPrototype() = 0; |
+ |
+ // Produce the definition. This must produce a definition. |
+ virtual CustomElementDefinition* build(const CustomElementDescriptor&) = 0; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // CustomElementDefinitionBuilder_h |