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
33 #include "ExceptionCode.h"
34 #include "MessagePort.h"
35 #include "SerializedScriptValue.h"
36 #include "V8Binding.h"
37 #include "V8MessagePortCustom.h"
38 #include "V8MessagePort.h"
39 #include "V8Proxy.h"
40 #include "V8Utilities.h"
41 #include "WorkerContextExecutionProxy.h"
42
43 namespace WebCore {
44
addEventListenerCallback(const v8::Arguments & args)45 v8::Handle<v8::Value> V8MessagePort::addEventListenerCallback(const v8::Arguments& args)
46 {
47 INC_STATS("DOM.MessagePort.addEventListener()");
48 MessagePort* messagePort = V8MessagePort::toNative(args.Holder());
49 RefPtr<EventListener> listener = V8DOMWrapper::getEventListener(messagePort, args[1], false, ListenerFindOrCreate);
50 if (listener) {
51 String type = toWebCoreString(args[0]);
52 bool useCapture = args[2]->BooleanValue();
53 messagePort->addEventListener(type, listener, useCapture);
54
55 createHiddenDependency(args.Holder(), args[1], cacheIndex);
56 }
57 return v8::Undefined();
58 }
59
removeEventListenerCallback(const v8::Arguments & args)60 v8::Handle<v8::Value> V8MessagePort::removeEventListenerCallback(const v8::Arguments& args)
61 {
62 INC_STATS("DOM.MessagePort.removeEventListener()");
63 MessagePort* messagePort = V8MessagePort::toNative(args.Holder());
64 RefPtr<EventListener> listener = V8DOMWrapper::getEventListener(messagePort, args[1], false, ListenerFindOnly);
65 if (listener) {
66 String type = toWebCoreString(args[0]);
67 bool useCapture = args[2]->BooleanValue();
68 messagePort->removeEventListener(type, listener.get(), useCapture);
69
70 removeHiddenDependency(args.Holder(), args[1], cacheIndex);
71 }
72
73 return v8::Undefined();
74 }
75
postMessageCallback(const v8::Arguments & args)76 v8::Handle<v8::Value> V8MessagePort::postMessageCallback(const v8::Arguments& args)
77 {
78 INC_STATS("DOM.MessagePort.postMessage");
79 MessagePort* messagePort = V8MessagePort::toNative(args.Holder());
80 RefPtr<SerializedScriptValue> message = SerializedScriptValue::create(args[0]);
81 MessagePortArray portArray;
82 if (args.Length() > 1) {
83 if (!getMessagePortArray(args[1], portArray))
84 return v8::Undefined();
85 }
86 ExceptionCode ec = 0;
87 messagePort->postMessage(message.release(), &portArray, ec);
88 return throwError(ec);
89 }
90
getMessagePortArray(v8::Local<v8::Value> value,MessagePortArray & portArray)91 bool getMessagePortArray(v8::Local<v8::Value> value, MessagePortArray& portArray)
92 {
93 if (isUndefinedOrNull(value)) {
94 portArray.resize(0);
95 return true;
96 }
97
98 if (!value->IsObject()) {
99 throwError("MessagePortArray argument must be an object");
100 return false;
101 }
102 uint32_t length = 0;
103 v8::Local<v8::Object> ports = v8::Local<v8::Object>::Cast(value);
104
105 if (value->IsArray()) {
106 v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(value);
107 length = array->Length();
108 } else {
109 // Sequence-type object - get the length attribute
110 v8::Local<v8::Value> sequenceLength = ports->Get(v8::String::New("length"));
111 if (!sequenceLength->IsNumber()) {
112 throwError("MessagePortArray argument has no length attribute");
113 return false;
114 }
115 length = sequenceLength->Uint32Value();
116 }
117 portArray.resize(length);
118
119 for (unsigned int i = 0; i < length; ++i) {
120 v8::Local<v8::Value> port = ports->Get(v8::Integer::New(i));
121 // Validation of non-null objects, per HTML5 spec 8.3.3.
122 if (isUndefinedOrNull(port)) {
123 throwError(INVALID_STATE_ERR);
124 return false;
125 }
126 // Validation of Objects implementing an interface, per WebIDL spec 4.1.15.
127 if (!V8MessagePort::HasInstance(port)) {
128 throwError("MessagePortArray argument must contain only MessagePorts");
129 return false;
130 }
131 portArray[i] = V8MessagePort::toNative(v8::Handle<v8::Object>::Cast(port));
132 }
133 return true;
134 }
135
136 } // namespace WebCore
137