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// Copyright (c) 2012 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.
#ifndef CONTENT_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
#define CONTENT_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
#include <queue>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/string16.h"
#include "base/synchronization/lock.h"
#include "ipc/ipc_listener.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebMessagePortChannel.h"
// This is thread safe.
class WebMessagePortChannelImpl
: public WebKit::WebMessagePortChannel,
public IPC::Listener,
public base::RefCountedThreadSafe<WebMessagePortChannelImpl> {
public:
WebMessagePortChannelImpl();
WebMessagePortChannelImpl(int route_id, int message_port_id);
// Queues received and incoming messages until there are no more in-flight
// messages, then sends all of them to the browser process.
void QueueMessages();
int message_port_id() const { return message_port_id_; }
private:
friend class base::RefCountedThreadSafe<WebMessagePortChannelImpl>;
virtual ~WebMessagePortChannelImpl();
// WebMessagePortChannel implementation.
virtual void setClient(WebKit::WebMessagePortChannelClient* client);
virtual void destroy();
virtual void entangle(WebKit::WebMessagePortChannel* channel);
virtual void postMessage(const WebKit::WebString& message,
WebKit::WebMessagePortChannelArray* channels);
virtual bool tryGetMessage(WebKit::WebString* message,
WebKit::WebMessagePortChannelArray& channels);
void Init();
void Entangle(scoped_refptr<WebMessagePortChannelImpl> channel);
void Send(IPC::Message* message);
// IPC::Listener implementation.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
void OnMessage(const string16& message,
const std::vector<int>& sent_message_port_ids,
const std::vector<int>& new_routing_ids);
void OnMessagedQueued();
struct Message {
Message();
~Message();
string16 message;
std::vector<WebMessagePortChannelImpl*> ports;
};
typedef std::queue<Message> MessageQueue;
MessageQueue message_queue_;
WebKit::WebMessagePortChannelClient* client_;
base::Lock lock_; // Locks access to above.
int route_id_; // The routing id for this object.
int message_port_id_; // A globally unique identifier for this message port.
DISALLOW_COPY_AND_ASSIGN(WebMessagePortChannelImpl);
};
#endif // CONTENT_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
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