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#ifndef JSMessagePortCustom_h
32#define JSMessagePortCustom_h
33
34#include "MessagePort.h"
35#include <runtime/JSValue.h>
36#include <wtf/Forward.h>
37
38namespace WebCore {
39
40    typedef int ExceptionCode;
41
42    // Helper function which pulls the values out of a JS sequence and into a MessagePortArray.
43    // Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL spec and section 8.3.3 of the HTML5 spec.
44    // May generate an exception via the passed ExecState.
45    void fillMessagePortArray(JSC::ExecState*, JSC::JSValue, MessagePortArray&);
46
47    // Helper function to convert from JS postMessage arguments to WebCore postMessage arguments.
48    template <typename T>
49    inline JSC::JSValue handlePostMessage(JSC::ExecState* exec, T* impl)
50    {
51        PassRefPtr<SerializedScriptValue> message = SerializedScriptValue::create(exec, exec->argument(0));
52        MessagePortArray portArray;
53        fillMessagePortArray(exec, exec->argument(1), portArray);
54        if (exec->hadException())
55            return JSC::jsUndefined();
56
57        ExceptionCode ec = 0;
58        impl->postMessage(message, &portArray, ec);
59        setDOMException(exec, ec);
60        return JSC::jsUndefined();
61    }
62
63}
64#endif // JSMessagePortCustom_h
65