| // 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 |