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
43namespace blink {
44
45void 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
105void 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