| /* |
| * Copyright (C) 2009 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * 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. |
| */ |
| |
| #include "config.h" |
| #include "bindings/core/v8/V8DOMWrapper.h" |
| |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8HTMLCollection.h" |
| #include "bindings/core/v8/V8HTMLDocument.h" |
| #include "bindings/core/v8/V8ObjectConstructor.h" |
| #include "bindings/core/v8/V8PerContextData.h" |
| #include "bindings/core/v8/V8ScriptRunner.h" |
| #include "bindings/core/v8/V8Window.h" |
| |
| namespace blink { |
| |
| static v8::Local<v8::Object> wrapInShadowTemplate(v8::Local<v8::Object> wrapper, ScriptWrappableBase* scriptWrappableBase, v8::Isolate* isolate) |
| { |
| static int shadowTemplateKey; // This address is used for a key to look up the dom template. |
| V8PerIsolateData* data = V8PerIsolateData::from(isolate); |
| v8::Handle<v8::FunctionTemplate> shadowTemplate = data->existingDOMTemplate(&shadowTemplateKey); |
| if (shadowTemplate.IsEmpty()) { |
| shadowTemplate = v8::FunctionTemplate::New(isolate); |
| if (shadowTemplate.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| shadowTemplate->SetClassName(v8AtomicString(isolate, "HTMLDocument")); |
| shadowTemplate->Inherit(V8HTMLDocument::domTemplate(isolate)); |
| shadowTemplate->InstanceTemplate()->SetInternalFieldCount(V8HTMLDocument::internalFieldCount); |
| data->setDOMTemplate(&shadowTemplateKey, shadowTemplate); |
| } |
| |
| v8::Local<v8::Function> shadowConstructor = shadowTemplate->GetFunction(); |
| if (shadowConstructor.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| |
| v8::Local<v8::Object> shadow = V8ScriptRunner::instantiateObject(isolate, shadowConstructor); |
| if (shadow.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| shadow->SetPrototype(wrapper); |
| V8DOMWrapper::setNativeInfo(wrapper, &V8HTMLDocument::wrapperTypeInfo, scriptWrappableBase); |
| return shadow; |
| } |
| |
| v8::Local<v8::Object> V8DOMWrapper::createWrapper(v8::Handle<v8::Object> creationContext, const WrapperTypeInfo* type, ScriptWrappableBase* scriptWrappableBase, v8::Isolate* isolate) |
| { |
| V8WrapperInstantiationScope scope(creationContext, isolate); |
| |
| V8PerContextData* perContextData = V8PerContextData::from(scope.context()); |
| v8::Local<v8::Object> wrapper = perContextData ? perContextData->createWrapperFromCache(type) : V8ObjectConstructor::newInstance(isolate, type->domTemplate(isolate)->GetFunction()); |
| |
| if (type == &V8HTMLDocument::wrapperTypeInfo && !wrapper.IsEmpty()) |
| wrapper = wrapInShadowTemplate(wrapper, scriptWrappableBase, isolate); |
| |
| return wrapper; |
| } |
| |
| bool V8DOMWrapper::isDOMWrapper(v8::Handle<v8::Value> value) |
| { |
| if (value.IsEmpty() || !value->IsObject()) |
| return false; |
| |
| if (v8::Handle<v8::Object>::Cast(value)->InternalFieldCount() < v8DefaultWrapperInternalFieldCount) |
| return false; |
| |
| v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(value); |
| ASSERT(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex)); |
| ASSERT(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex)); |
| |
| const WrapperTypeInfo* typeInfo = static_cast<const WrapperTypeInfo*>(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex)); |
| // FIXME: We should add a more strict way to check if the typeInfo is a typeInfo of some DOM wrapper. |
| // Even if it's a typeInfo of Blink, it's not guaranteed that it's a typeInfo of a DOM wrapper. |
| return typeInfo->ginEmbedder == gin::kEmbedderBlink; |
| } |
| |
| } // namespace blink |