| // 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 "ipc/ipc_listener.h" |
| #include "third_party/WebKit/public/web/WebSharedWorkerConnector.h" |
| #include "url/gurl.h" |
| |
| namespace content { |
| |
| class MessageRouter; |
| |
| // 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 blink::WebSharedWorkerConnector, |
| private IPC::Listener { |
| public: |
| // If the worker not loaded yet, route_id == MSG_ROUTING_NONE |
| WebSharedWorkerProxy(MessageRouter* router, |
| unsigned long long document_id, |
| int route_id, |
| int render_frame_route_id); |
| virtual ~WebSharedWorkerProxy(); |
| |
| // Implementations of WebSharedWorkerConnector APIs |
| virtual void connect(blink::WebMessagePortChannel* channel, |
| ConnectListener* listener); |
| |
| private: |
| // IPC::Listener implementation. |
| bool OnMessageReceived(const IPC::Message& message) override; |
| |
| // 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 OnWorkerCreated(); |
| void OnWorkerScriptLoadFailed(); |
| void OnWorkerConnected(); |
| |
| // 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 RenderFrame that created this worker. |
| int render_frame_route_id_; |
| |
| MessageRouter* const router_; |
| |
| // 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_; |
| bool created_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebSharedWorkerProxy); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_WEBSHAREDWORKER_PROXY_H_ |