| /* |
| * Copyright (C) 2012 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/V8CustomEvent.h" |
| |
| #include "bindings/core/v8/Dictionary.h" |
| #include "bindings/core/v8/SerializedScriptValue.h" |
| #include "bindings/core/v8/SerializedScriptValueFactory.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8CustomEventInit.h" |
| #include "bindings/core/v8/V8DOMWrapper.h" |
| #include "bindings/core/v8/V8Event.h" |
| #include "bindings/core/v8/V8HiddenValue.h" |
| #include "core/dom/ContextFeatures.h" |
| #include "platform/RuntimeEnabledFeatures.h" |
| |
| namespace blink { |
| |
| static v8::Local<v8::Value> cacheState(v8::Isolate* isolate, v8::Local<v8::Object> customEvent, v8::Local<v8::Value> detail) |
| { |
| V8HiddenValue::setHiddenValue(isolate, customEvent, V8HiddenValue::detail(isolate), detail); |
| return detail; |
| } |
| |
| void V8CustomEvent::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| ExceptionState exceptionState(ExceptionState::ConstructionContext, "CustomEvent", info.Holder(), info.GetIsolate()); |
| if (UNLIKELY(info.Length() < 1)) { |
| setMinimumArityTypeError(exceptionState, 1, info.Length()); |
| exceptionState.throwIfNeeded(); |
| return; |
| } |
| |
| V8StringResource<> type = info[0]; |
| if (!type.prepare()) |
| return; |
| |
| CustomEventInit eventInitDict; |
| if (!isUndefinedOrNull(info[1])) { |
| if (!info[1]->IsObject()) { |
| exceptionState.throwTypeError("parameter 2 ('eventInitDict') is not an object."); |
| exceptionState.throwIfNeeded(); |
| return; |
| } |
| V8CustomEventInit::toImpl(info.GetIsolate(), info[1], eventInitDict, exceptionState); |
| if (exceptionState.throwIfNeeded()) |
| return; |
| } |
| |
| RefPtrWillBeRawPtr<CustomEvent> impl = CustomEvent::create(type, eventInitDict); |
| v8::Local<v8::Object> wrapper = info.Holder(); |
| wrapper = impl->associateWithWrapper(info.GetIsolate(), &V8CustomEvent::wrapperTypeInfo, wrapper); |
| |
| // TODO(bashi): Workaround for http://crbug.com/529941. We need to store |
| // |detail| as a hidden value to avoid cycle references. |
| if (eventInitDict.hasDetail()) { |
| v8::Local<v8::Value> v8Detail = eventInitDict.detail().v8Value(); |
| cacheState(info.GetIsolate(), wrapper, v8Detail); |
| // When a custom event is created in an isolated world, serialize |
| // |detail| and store it in |impl| so that we can clone |detail| |
| // when the getter of |detail| is called in the main world later. |
| if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld()) |
| impl->setSerializedDetail(SerializedScriptValueFactory::instance().createAndSwallowExceptions(info.GetIsolate(), v8Detail)); |
| } |
| v8SetReturnValue(info, wrapper); |
| } |
| |
| void V8CustomEvent::detailAttributeGetterCustom(const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| CustomEvent* event = V8CustomEvent::toImpl(info.Holder()); |
| |
| v8::Local<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::detail(info.GetIsolate())); |
| |
| if (!result.IsEmpty()) { |
| v8SetReturnValue(info, result); |
| return; |
| } |
| |
| // Be careful not to return a V8 value which is created in different world. |
| v8::Local<v8::Value> detail; |
| if (SerializedScriptValue* serializedValue = event->serializedDetail()) { |
| detail = serializedValue->deserialize(); |
| } else if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld()) { |
| v8::Local<v8::Value> mainWorldDetail = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::detail(info.GetIsolate())); |
| if (!mainWorldDetail.IsEmpty()) { |
| event->setSerializedDetail(SerializedScriptValueFactory::instance().createAndSwallowExceptions(info.GetIsolate(), mainWorldDetail)); |
| detail = event->serializedDetail()->deserialize(); |
| } |
| } |
| |
| // |detail| should be null when it is an empty handle because its default value is null. |
| if (detail.IsEmpty()) |
| detail = v8::Null(info.GetIsolate()); |
| v8SetReturnValue(info, cacheState(info.GetIsolate(), info.Holder(), detail)); |
| } |
| |
| } // namespace blink |