/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"

#if ENABLE(SHARED_WORKERS)

#include "SharedWorker.h"

#include "ExceptionCode.h"
#include "Frame.h"
#include "V8Binding.h"
#include "V8CustomBinding.h"
#include "V8ObjectEventListener.h"
#include "V8Proxy.h"
#include "V8Utilities.h"
#include "WorkerContext.h"
#include "WorkerContextExecutionProxy.h"

namespace WebCore {

CALLBACK_FUNC_DECL(SharedWorkerConstructor)
{
    INC_STATS(L"DOM.SharedWorker.Constructor");

    if (!args.IsConstructCall())
        return throwError("DOM object constructor cannot be called as a function.");

    if (args.Length() < 2)
        return throwError("Not enough arguments", V8Proxy::SyntaxError);

    v8::TryCatch tryCatch;
    v8::Handle<v8::String> scriptUrl = args[0]->ToString();
    v8::Handle<v8::String> name = args[1]->ToString();
    if (tryCatch.HasCaught())
        return throwError(tryCatch.Exception());

    if (scriptUrl.IsEmpty())
        return v8::Undefined();

    // Get the script execution context.
    ScriptExecutionContext* context = 0;
    WorkerContextExecutionProxy* proxy = WorkerContextExecutionProxy::retrieve();
    if (proxy)
        context = proxy->workerContext();
    else {
        Frame* frame = V8Proxy::retrieveFrame();
        if (!frame)
            return v8::Undefined();
        context = frame->document();
    }

    // Create the worker object.
    // Note: it's OK to let this RefPtr go out of scope because we also call SetDOMWrapper(), which effectively holds a reference to obj.
    ExceptionCode ec = 0;
    RefPtr<SharedWorker> obj = SharedWorker::create(toWebCoreString(scriptUrl), toWebCoreString(name), context, ec);

    // Setup the standard wrapper object internal fields.
    v8::Handle<v8::Object> wrapperObject = args.Holder();
    V8Proxy::setDOMWrapper(wrapperObject, V8ClassIndex::SHAREDWORKER, obj.get());

    obj->ref();
    V8Proxy::setJSWrapperForActiveDOMObject(obj.get(), v8::Persistent<v8::Object>::New(wrapperObject));

    return wrapperObject;
}

} // namespace WebCore

#endif // ENABLE(SHARED_WORKERS)