1/*
2 * Copyright (C) 2008 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 */
26
27#include "config.h"
28#include "core/dom/MessageChannel.h"
29
30#include "core/dom/MessagePort.h"
31#include "public/platform/Platform.h"
32#include "public/platform/WebMessagePortChannel.h"
33
34namespace blink {
35
36DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(MessageChannel);
37
38static void createChannel(MessagePort* port1, MessagePort* port2)
39{
40    WebMessagePortChannel* channel1;
41    WebMessagePortChannel* channel2;
42    Platform::current()->createMessageChannel(&channel1, &channel2);
43    ASSERT(channel1 && channel2);
44
45    // Now entangle the proxies with the appropriate local ports.
46    port1->entangle(adoptPtr(channel2));
47    port2->entangle(adoptPtr(channel1));
48}
49
50MessageChannel::MessageChannel(ExecutionContext* context)
51    : m_port1(MessagePort::create(*context))
52    , m_port2(MessagePort::create(*context))
53{
54    createChannel(m_port1.get(), m_port2.get());
55}
56
57void MessageChannel::trace(Visitor* visitor)
58{
59    visitor->trace(m_port1);
60    visitor->trace(m_port2);
61}
62
63} // namespace blink
64