third_party/WebKit/Source/core/workers/Worker.cpp

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "core/workers/Worker.h"

#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/Document.h"
#include "core/dom/ExceptionCode.h"
#include "core/frame/UseCounter.h"
#include "core/workers/DedicatedWorkerMessagingProxyProvider.h"
#include "core/workers/InProcessWorkerMessagingProxy.h"

namespace blink {

Worker::Worker(ExecutionContext* context)
    : InProcessWorkerBase(context)
{
}

Worker* Worker::create(ExecutionContext* context, const String& url, ExceptionState& exceptionState)
{
    DCHECK(isMainThread());
    Document* document = toDocument(context);
    UseCounter::count(context, UseCounter::WorkerStart);
    if (!document->page()) {
        exceptionState.throwDOMException(InvalidAccessError, "The context provided is invalid.");
        return nullptr;
    }
    Worker* worker = new Worker(context);
    if (worker->initialize(context, url, exceptionState))
        return worker;
    return nullptr;
}

Worker::~Worker()
{
    DCHECK(isMainThread());
}

const AtomicString& Worker::interfaceName() const
{
    return EventTargetNames::Worker;
}

InProcessWorkerMessagingProxy* Worker::createInProcessWorkerMessagingProxy(ExecutionContext* context)
{
    Document* document = toDocument(context);
    DedicatedWorkerMessagingProxyProvider* proxyProvider = DedicatedWorkerMessagingProxyProvider::from(*document->page());
    DCHECK(proxyProvider);
    return proxyProvider->createWorkerMessagingProxy(this);
}

} // namespace blink