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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "bindings/core/v8/ScriptCustomElementDefinitionBuilder.h" | |
6 | |
7 #include "bindings/core/v8/DOMWrapperWorld.h" | |
8 #include "bindings/core/v8/ExceptionState.h" | |
9 #include "bindings/core/v8/ScriptCustomElementDefinition.h" | |
10 #include "bindings/core/v8/ScriptState.h" | |
11 #include "bindings/core/v8/ScriptValue.h" | |
12 #include "bindings/core/v8/V8Binding.h" | |
13 #include "bindings/core/v8/V8BindingMacros.h" | |
14 #include "core/dom/ExceptionCode.h" | |
15 | |
16 namespace blink { | |
17 | |
18 ScriptCustomElementDefinitionBuilder::ScriptCustomElementDefinitionBuilder( | |
19 ScriptState* scriptState, | |
20 CustomElementsRegistry* registry, | |
21 const ScriptValue& constructor, | |
22 ExceptionState& exceptionState) | |
23 : m_scriptState(scriptState) | |
24 , m_registry(registry) | |
25 , m_constructorValue(constructor.v8Value()) | |
26 , m_exceptionState(exceptionState) | |
27 { | |
28 } | |
29 | |
30 bool ScriptCustomElementDefinitionBuilder::checkConstructorIntrinsics() | |
31 { | |
32 DCHECK(m_scriptState->world().isMainWorld()); | |
33 | |
34 // The signature of CustomElementsRegistry.define says this is a | |
35 // Function | |
36 // https://html.spec.whatwg.org/multipage/scripting.html#customelementsregis try | |
37 CHECK(m_constructorValue->IsFunction()); | |
38 m_constructor = m_constructorValue.As<v8::Object>(); | |
39 if (!m_constructor->IsConstructor()) { | |
40 m_exceptionState.throwTypeError( | |
41 "constructor argument is not a constructor"); | |
42 return false; | |
43 } | |
44 return true; | |
45 } | |
46 | |
47 bool ScriptCustomElementDefinitionBuilder::checkConstructorNotRegistered() | |
48 { | |
49 if (ScriptCustomElementDefinition::forConstructor( | |
50 m_scriptState.get(), | |
51 m_registry, | |
52 m_constructor)) { | |
53 | |
54 // Constructor is already registered. | |
55 m_exceptionState.throwDOMException( | |
56 NotSupportedError, | |
57 "this constructor has already been used with this registry"); | |
58 return false; | |
59 } | |
60 return true; | |
61 } | |
62 | |
63 bool ScriptCustomElementDefinitionBuilder::checkPrototype() | |
64 { | |
65 v8::Isolate* isolate = m_scriptState->isolate(); | |
66 v8::Local<v8::Context> context = m_scriptState->context(); | |
67 v8::Local<v8::String> prototypeString = | |
68 v8AtomicString(isolate, "prototype"); | |
69 v8::Local<v8::Value> prototypeValue; | |
70 if (!v8Call( | |
71 m_constructor->Get(context, prototypeString), prototypeValue)) { | |
72 return false; | |
73 } | |
74 if (!prototypeValue->IsObject()) { | |
75 m_exceptionState.throwTypeError( | |
76 "constructor prototype is not an object"); | |
77 return false; | |
78 } | |
79 m_prototype = prototypeValue.As<v8::Object>(); | |
80 // If retrieving the prototype destroyed the context, indicate that | |
81 // defining the element should not proceed. | |
82 return m_scriptState->contextIsValid(); | |
haraken
2016/05/28 08:29:48
Ditto. I'd just return true here.
| |
83 } | |
84 | |
85 CustomElementDefinition* ScriptCustomElementDefinitionBuilder::build( | |
86 const CustomElementDescriptor& descriptor) | |
87 { | |
88 return ScriptCustomElementDefinition::create( | |
89 m_scriptState.get(), | |
90 m_registry, | |
91 descriptor, | |
92 m_constructor, | |
93 m_prototype); | |
94 } | |
95 | |
96 } // namespace blink | |
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