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      1 /*
      2  * Copyright (C) 2012 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 #include "config.h"
     32 #include "bindings/core/v8/V8CustomEvent.h"
     33 
     34 #include "bindings/core/v8/Dictionary.h"
     35 #include "bindings/core/v8/SerializedScriptValue.h"
     36 #include "bindings/core/v8/V8Binding.h"
     37 #include "bindings/core/v8/V8DOMWrapper.h"
     38 #include "bindings/core/v8/V8Event.h"
     39 #include "bindings/core/v8/V8HiddenValue.h"
     40 #include "core/dom/ContextFeatures.h"
     41 #include "platform/RuntimeEnabledFeatures.h"
     42 
     43 namespace blink {
     44 
     45 static v8::Handle<v8::Value> cacheState(v8::Handle<v8::Object> customEvent, v8::Handle<v8::Value> detail, v8::Isolate* isolate)
     46 {
     47     V8HiddenValue::setHiddenValue(isolate, customEvent, V8HiddenValue::detail(isolate), detail);
     48     return detail;
     49 }
     50 
     51 
     52 void V8CustomEvent::detailAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
     53 {
     54     CustomEvent* event = V8CustomEvent::toImpl(info.Holder());
     55 
     56     v8::Handle<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::detail(info.GetIsolate()));
     57 
     58     if (!result.IsEmpty()) {
     59         v8SetReturnValue(info, result);
     60         return;
     61     }
     62 
     63     if (!event->serializedDetail()) {
     64         // If we're in an isolated world and the event was created in the main world,
     65         // we need to find the 'detail' property on the main world wrapper and clone it.
     66         v8::Local<v8::Value> mainWorldDetail = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::detail(info.GetIsolate()));
     67         if (!mainWorldDetail.IsEmpty())
     68             event->setSerializedDetail(SerializedScriptValue::createAndSwallowExceptions(mainWorldDetail, info.GetIsolate()));
     69     }
     70 
     71     if (event->serializedDetail()) {
     72         result = event->serializedDetail()->deserialize();
     73         v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate()));
     74         return;
     75     }
     76 
     77     v8SetReturnValue(info, cacheState(info.Holder(), v8::Null(info.GetIsolate()), info.GetIsolate()));
     78 }
     79 
     80 void V8CustomEvent::initCustomEventMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
     81 {
     82     CustomEvent* event = V8CustomEvent::toImpl(info.Holder());
     83     ASSERT(!event->serializedDetail());
     84 
     85     TOSTRING_VOID(V8StringResource<>, typeArg, info[0]);
     86     TONATIVE_VOID(bool, canBubbleArg, info[1]->BooleanValue());
     87     TONATIVE_VOID(bool, cancelableArg, info[2]->BooleanValue());
     88     v8::Handle<v8::Value> detailsArg = info[3];
     89 
     90     event->initEvent(typeArg, canBubbleArg, cancelableArg);
     91 
     92     if (!detailsArg.IsEmpty()) {
     93         V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::detail(info.GetIsolate()), detailsArg);
     94         if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld())
     95             event->setSerializedDetail(SerializedScriptValue::createAndSwallowExceptions(detailsArg, info.GetIsolate()));
     96     }
     97 }
     98 
     99 } // namespace blink
    100