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 #if ENABLE(WORKERS)
34 #include "V8Worker.h"
35
36 #include "Worker.h"
37
38 #include "ExceptionCode.h"
39 #include "Frame.h"
40 #include "SerializedScriptValue.h"
41 #include "V8Binding.h"
42 #include "V8MessagePortCustom.h"
43 #include "V8Proxy.h"
44 #include "V8Utilities.h"
45 #include "WorkerContext.h"
46 #include "WorkerContextExecutionProxy.h"
47
48 namespace WebCore {
49
constructorCallback(const v8::Arguments & args)50 v8::Handle<v8::Value> V8Worker::constructorCallback(const v8::Arguments& args)
51 {
52 INC_STATS(L"DOM.Worker.Constructor");
53
54 if (!args.IsConstructCall())
55 return throwError("DOM object constructor cannot be called as a function.");
56
57 if (!args.Length())
58 return throwError("Not enough arguments", V8Proxy::SyntaxError);
59
60 v8::TryCatch tryCatch;
61 v8::Handle<v8::String> scriptUrl = args[0]->ToString();
62 if (tryCatch.HasCaught())
63 return throwError(tryCatch.Exception());
64
65 if (scriptUrl.IsEmpty())
66 return v8::Undefined();
67
68 // Get the script execution context.
69 ScriptExecutionContext* context = getScriptExecutionContext();
70 if (!context)
71 return v8::Undefined();
72
73 // Create the worker object.
74 // Note: it's OK to let this RefPtr go out of scope because we also call setDOMWrapper(), which effectively holds a reference to obj.
75 ExceptionCode ec = 0;
76 RefPtr<Worker> obj = Worker::create(toWebCoreString(scriptUrl), context, ec);
77 if (ec)
78 return throwError(ec);
79
80 // Setup the standard wrapper object internal fields.
81 v8::Handle<v8::Object> wrapperObject = args.Holder();
82 V8DOMWrapper::setDOMWrapper(wrapperObject, &info, obj.get());
83
84 obj->ref();
85 V8DOMWrapper::setJSWrapperForActiveDOMObject(obj.get(), v8::Persistent<v8::Object>::New(wrapperObject));
86
87 return wrapperObject;
88 }
89
postMessageCallback(const v8::Arguments & args)90 v8::Handle<v8::Value> V8Worker::postMessageCallback(const v8::Arguments& args)
91 {
92 INC_STATS("DOM.Worker.postMessage");
93 Worker* worker = V8Worker::toNative(args.Holder());
94 bool didThrow = false;
95 RefPtr<SerializedScriptValue> message = SerializedScriptValue::create(args[0], didThrow);
96 if (didThrow)
97 return v8::Undefined();
98 MessagePortArray portArray;
99 if (args.Length() > 1) {
100 if (!getMessagePortArray(args[1], portArray))
101 return v8::Undefined();
102 }
103 ExceptionCode ec = 0;
104 worker->postMessage(message.release(), &portArray, ec);
105 return throwError(ec);
106 }
107
108 } // namespace WebCore
109
110 #endif // ENABLE(WORKERS)
111