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/*
* Copyright (C) 2013 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_SHARED_WORKER_CLIENT_HOLDER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_SHARED_WORKER_CLIENT_HOLDER_H_
#include <memory>
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/bindings/unique_receiver_set.h"
#include "third_party/blink/public/mojom/blob/blob_url_store.mojom-blink-forward.h"
#include "third_party/blink/public/mojom/worker/shared_worker_client.mojom-blink-forward.h"
#include "third_party/blink/public/mojom/worker/shared_worker_connector.mojom-blink.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/execution_context/context_lifecycle_observer.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace blink {
class MessagePortChannel;
class KURL;
class SharedWorker;
// This holds SharedWorkerClients connecting with SharedWorkerHosts in the
// browser process. Every call of SharedWorkerClientHolder::Connect() creates a
// new client instance regardless of existing connections, and keeps it until
// the connection gets lost.
//
// SharedWorkerClientHolder is a per-Document object and owned by Document via
// Supplement<Document>.
class CORE_EXPORT SharedWorkerClientHolder final
: public GarbageCollected<SharedWorkerClientHolder>,
public Supplement<Document>,
public ContextLifecycleObserver {
USING_GARBAGE_COLLECTED_MIXIN(SharedWorkerClientHolder);
public:
static const char kSupplementName[];
static SharedWorkerClientHolder* From(Document& document);
explicit SharedWorkerClientHolder(Document&);
virtual ~SharedWorkerClientHolder() = default;
// Establishes a connection with SharedWorkerHost in the browser process.
void Connect(SharedWorker*,
MessagePortChannel,
const KURL&,
mojo::PendingRemote<mojom::blink::BlobURLToken>,
const String& name);
// Overrides ContextLifecycleObserver.
void ContextDestroyed(ExecutionContext*) override;
void Trace(Visitor* visitor) override;
private:
mojo::Remote<mojom::blink::SharedWorkerConnector> connector_;
mojo::UniqueReceiverSet<mojom::blink::SharedWorkerClient> client_receivers_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
DISALLOW_COPY_AND_ASSIGN(SharedWorkerClientHolder);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_SHARED_WORKER_CLIENT_HOLDER_H_
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