1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef CustomElementConstructorBuilder_h 32 #define CustomElementConstructorBuilder_h 33 34 #include "bindings/v8/ScriptValue.h" 35 #include "bindings/v8/V8CustomElementLifecycleCallbacks.h" 36 #include "core/dom/QualifiedName.h" 37 #include "core/dom/custom/CustomElementLifecycleCallbacks.h" 38 #include "wtf/Noncopyable.h" 39 #include "wtf/PassRefPtr.h" 40 #include "wtf/RefPtr.h" 41 #include "wtf/text/AtomicString.h" 42 #include <v8.h> 43 44 namespace WebCore { 45 46 class CustomElementDefinition; 47 class Dictionary; 48 class Document; 49 class Element; 50 class ExceptionState; 51 class QualifiedName; 52 class ScriptState; 53 class V8PerContextData; 54 struct WrapperTypeInfo; 55 56 // Handles the scripting-specific parts of the Custom Elements element 57 // registration algorithm and constructor generation algorithm. It is 58 // used in the implementation of those algorithms in 59 // Document::registerElement. 60 class CustomElementConstructorBuilder { 61 WTF_MAKE_NONCOPYABLE(CustomElementConstructorBuilder); 62 public: 63 CustomElementConstructorBuilder(ScriptState*, const Dictionary* options); 64 65 // The builder accumulates state and may run script at specific 66 // points. These methods must be called in order. When one fails 67 // (returns false), the calls must stop. 68 69 bool isFeatureAllowed() const; 70 bool validateOptions(const AtomicString& type, QualifiedName& tagName, ExceptionState&); 71 PassRefPtr<CustomElementLifecycleCallbacks> createCallbacks(); 72 bool createConstructor(Document*, CustomElementDefinition*, ExceptionState&); 73 bool didRegisterDefinition(CustomElementDefinition*) const; 74 75 // This method collects a return value for the bindings. It is 76 // safe to call this method even if the builder failed; it will 77 // return an empty value. 78 ScriptValue bindingsReturnValue() const; 79 80 private: 81 bool hasValidPrototypeChainFor(const WrapperTypeInfo*) const; 82 bool prototypeIsValid(const AtomicString& type, ExceptionState&) const; 83 v8::Handle<v8::Function> retrieveCallback(v8::Isolate*, const char* name); 84 85 v8::Handle<v8::Context> m_context; 86 const Dictionary* m_options; 87 v8::Handle<v8::Object> m_prototype; 88 const WrapperTypeInfo* m_wrapperType; 89 v8::Handle<v8::Function> m_constructor; 90 RefPtr<V8CustomElementLifecycleCallbacks> m_callbacks; 91 }; 92 93 } 94 95 #endif // CustomElementConstructorBuilder_h 96