1 /*

     2  * Copyright (C) 2008, 2009 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 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 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 #include "config.h"

    27 #include "JSMessageChannel.h"

    28 

    29 #include "MessageChannel.h"

    30 #include <runtime/Error.h>

    31 

    32 using namespace JSC;

    33 

    34 namespace WebCore {

    35     

    36 void JSMessageChannel::markChildren(MarkStack& markStack)

    37 {

    38     Base::markChildren(markStack);

    39 

    40     if (MessagePort* port = m_impl->port1())

    41         markDOMObjectWrapper(markStack, *Heap::heap(this)->globalData(), port);

    42 

    43     if (MessagePort* port = m_impl->port2())

    44         markDOMObjectWrapper(markStack, *Heap::heap(this)->globalData(), port);

    45 }

    46 

    47 EncodedJSValue JSC_HOST_CALL JSMessageChannelConstructor::constructJSMessageChannel(ExecState* exec)

    48 {

    49     JSMessageChannelConstructor* jsConstructor = static_cast<JSMessageChannelConstructor*>(exec->callee());

    50     ScriptExecutionContext* context = jsConstructor->scriptExecutionContext();

    51     if (!context)

    52         return throwVMError(exec, createReferenceError(exec, "MessageChannel constructor associated document is unavailable"));

    53 

    54     return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), MessageChannel::create(context))));

    55 }

    56 

    57 } // namespace WebCore