Home | History | Annotate | Download | only in custom 
      1 /*
      2  * Copyright (C) 2009 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/V8MessageEvent.h"
     33 
     34 #include "bindings/core/v8/SerializedScriptValue.h"
     35 #include "bindings/core/v8/V8Binding.h"
     36 #include "bindings/core/v8/V8Blob.h"
     37 #include "bindings/core/v8/V8HiddenValue.h"
     38 #include "bindings/core/v8/V8MessagePort.h"
     39 #include "bindings/core/v8/V8Window.h"
     40 #include "bindings/core/v8/custom/V8ArrayBufferCustom.h"
     41 #include "core/events/MessageEvent.h"
     42 
     43 namespace blink {
     44 
     45 void V8MessageEvent::dataAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
     46 {
     47     MessageEvent* event = V8MessageEvent::toImpl(info.Holder());
     48 
     49     v8::Handle<v8::Value> result;
     50     switch (event->dataType()) {
     51     case MessageEvent::DataTypeScriptValue: {
     52         result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate()));
     53         if (result.IsEmpty()) {
     54             if (!event->dataAsSerializedScriptValue()) {
     55                 // If we're in an isolated world and the event was created in the main world,
     56                 // we need to find the 'data' property on the main world wrapper and clone it.
     57                 v8::Local<v8::Value> mainWorldData = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::data(info.GetIsolate()));
     58                 if (!mainWorldData.IsEmpty())
     59                     event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(mainWorldData, info.GetIsolate()));
     60             }
     61             if (event->dataAsSerializedScriptValue())
     62                 result = event->dataAsSerializedScriptValue()->deserialize(info.GetIsolate());
     63             else
     64                 result = v8::Null(info.GetIsolate());
     65         }
     66         break;
     67     }
     68 
     69     case MessageEvent::DataTypeSerializedScriptValue:
     70         if (SerializedScriptValue* serializedValue = event->dataAsSerializedScriptValue()) {
     71             MessagePortArray ports = event->ports();
     72             result = serializedValue->deserialize(info.GetIsolate(), &ports);
     73         } else {
     74             result = v8::Null(info.GetIsolate());
     75         }
     76         break;
     77 
     78     case MessageEvent::DataTypeString: {
     79         result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::stringData(info.GetIsolate()));
     80         if (result.IsEmpty()) {
     81             String stringValue = event->dataAsString();
     82             result = v8String(info.GetIsolate(), stringValue);
     83         }
     84         break;
     85     }
     86 
     87     case MessageEvent::DataTypeBlob:
     88         result = toV8(event->dataAsBlob(), info.Holder(), info.GetIsolate());
     89         break;
     90 
     91     case MessageEvent::DataTypeArrayBuffer:
     92         result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::arrayBufferData(info.GetIsolate()));
     93         if (result.IsEmpty())
     94             result = toV8(event->dataAsArrayBuffer(), info.Holder(), info.GetIsolate());
     95         break;
     96     }
     97 
     98     // Overwrite the data attribute so it returns the cached result in future invocations.
     99     // This custom getter handler will not be called again.
    100     v8::PropertyAttribute dataAttr = static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly);
    101     info.Holder()->ForceSet(v8AtomicString(info.GetIsolate(), "data"), result, dataAttr);
    102     v8SetReturnValue(info, result);
    103 }
    104 
    105 void V8MessageEvent::initMessageEventMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
    106 {
    107     ExceptionState exceptionState(ExceptionState::ExecutionContext, "initMessageEvent", "MessageEvent", info.Holder(), info.GetIsolate());
    108     MessageEvent* event = V8MessageEvent::toImpl(info.Holder());
    109     TOSTRING_VOID(V8StringResource<>, typeArg, info[0]);
    110     TONATIVE_VOID(bool, canBubbleArg, info[1]->BooleanValue());
    111     TONATIVE_VOID(bool, cancelableArg, info[2]->BooleanValue());
    112     v8::Handle<v8::Value> dataArg = info[3];
    113     TOSTRING_VOID(V8StringResource<>, originArg, info[4]);
    114     TOSTRING_VOID(V8StringResource<>, lastEventIdArg, info[5]);
    115     LocalDOMWindow* sourceArg = toDOMWindow(info[6], info.GetIsolate());
    116     OwnPtrWillBeRawPtr<MessagePortArray> portArray = nullptr;
    117     const int portArrayIndex = 7;
    118     if (!isUndefinedOrNull(info[portArrayIndex])) {
    119         portArray = adoptPtrWillBeNoop(new MessagePortArray);
    120         *portArray = toRefPtrWillBeMemberNativeArray<MessagePort, V8MessagePort>(info[portArrayIndex], portArrayIndex + 1, info.GetIsolate(), exceptionState);
    121         if (exceptionState.throwIfNeeded())
    122             return;
    123     }
    124     event->initMessageEvent(typeArg, canBubbleArg, cancelableArg, originArg, lastEventIdArg, sourceArg, portArray.release());
    125 
    126     if (!dataArg.IsEmpty()) {
    127         V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate()), dataArg);
    128         if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld())
    129             event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(dataArg, info.GetIsolate()));
    130     }
    131 }
    132 
    133 } // namespace blink
    134