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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_RENDERER_WEBSHAREDWORKER_PROXY_H_
#define CONTENT_RENDERER_WEBSHAREDWORKER_PROXY_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "googleurl/src/gurl.h"
#include "ipc/ipc_listener.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSharedWorker.h"
namespace content {
class ChildThread;
// Implementation of the WebSharedWorker APIs. This object is intended to only
// live long enough to allow the caller to send a "connect" event to the worker
// thread. Once the connect event has been sent, all future communication will
// happen via the WebMessagePortChannel, and the WebSharedWorker instance will
// be freed.
class WebSharedWorkerProxy : public WebKit::WebSharedWorker,
private IPC::Listener {
public:
// If the worker not loaded yet, route_id == MSG_ROUTING_NONE
WebSharedWorkerProxy(ChildThread* child_thread,
unsigned long long document_id,
bool exists,
int route_id,
int render_view_route_id);
virtual ~WebSharedWorkerProxy();
// Implementations of WebSharedWorker APIs
virtual bool isStarted();
virtual void connect(WebKit::WebMessagePortChannel* channel,
ConnectListener* listener);
virtual void startWorkerContext(
const WebKit::WebURL& script_url,
const WebKit::WebString& name,
const WebKit::WebString& user_agent,
const WebKit::WebString& source_code,
const WebKit::WebString& content_security_policy,
WebKit::WebContentSecurityPolicyType policy_type,
long long script_resource_appcache_id);
virtual void terminateWorkerContext();
virtual void clientDestroyed();
private:
// IPC::Listener implementation.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
// Returns true if the worker is running (can send messages to it).
bool IsStarted();
// Disconnects the worker (stops listening for incoming messages).
void Disconnect();
// Sends a message to the worker thread (forwarded via the RenderViewHost).
// If WorkerStarted() has not yet been called, message is queued.
bool Send(IPC::Message*);
// Returns true if there are queued messages.
bool HasQueuedMessages() { return !queued_messages_.empty(); }
// Sends any messages currently in the queue.
void SendQueuedMessages();
void CreateWorkerContext(const GURL& script_url,
bool is_shared,
const string16& name,
const string16& user_agent,
const string16& source_code,
const string16& content_security_policy,
WebKit::WebContentSecurityPolicyType policy_type,
int pending_route_id,
int64 script_resource_appcache_id);
void OnWorkerCreated();
// Routing id associated with this worker - used to receive messages from the
// worker, and also to route messages to the worker (WorkerService contains
// a map that maps between these renderer-side route IDs and worker-side
// routing ids).
int route_id_;
// The routing id for the RenderView that created this worker.
int render_view_route_id_;
ChildThread* child_thread_;
// ID of our parent document (used to shutdown workers when the parent
// document is detached).
unsigned long long document_id_;
// Stores messages that were sent before the StartWorkerContext message.
std::vector<IPC::Message*> queued_messages_;
// The id for the placeholder worker instance we've stored on the
// browser process (we need to pass this same route id back in when creating
// the worker).
int pending_route_id_;
ConnectListener* connect_listener_;
DISALLOW_COPY_AND_ASSIGN(WebSharedWorkerProxy);
};
} // namespace content
#endif // CONTENT_RENDERER_WEBSHAREDWORKER_PROXY_H_
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