content/browser/navigator_connect/navigator_connect_context_impl.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_NAVIGATOR_CONNECT_NAVIGATOR_CONNECT_CONTEXT_IMPL_H_
   6 #define CONTENT_BROWSER_NAVIGATOR_CONNECT_NAVIGATOR_CONNECT_CONTEXT_IMPL_H_
   7
   8 #include <map>
   9 #include "base/callback_forward.h"
  10 #include "base/memory/scoped_vector.h"
  11 #include "content/public/browser/message_port_delegate.h"
  12 #include "content/public/browser/navigator_connect_context.h"
  13
  14 namespace content {
  15
  16 class MessagePortMessageFilter;
  17 class NavigatorConnectService;
  18 class NavigatorConnectServiceFactory;
  19 struct NavigatorConnectClient;
  20 struct TransferredMessagePort;
  21
  22 // Tracks all active navigator.connect connections, as well as available service
  23 // factories. Delegates connection requests to the correct factory and passes
  24 // messages on to the correct service.
  25 // One instance of this class exists per StoragePartition.
  26 // TODO(mek): Somehow clean up connections when the client side goes away.
  27 class NavigatorConnectContextImpl : public NavigatorConnectContext {
  28  public:
  29   using ConnectCallback =
  30       base::Callback<void(const TransferredMessagePort& message_port,
  31                           int message_port_route_id,
  32                           bool success)>;
  33
  34   explicit NavigatorConnectContextImpl();
  35
  36   // Called when a new connection request comes in from a client. Finds the
  37   // correct service factory and passes the connection request off to there.
  38   // Can call the callback before this method call returns.
  39   void Connect(NavigatorConnectClient client,
  40                MessagePortMessageFilter* message_port_message_filter,
  41                const ConnectCallback& callback);
  42
  43   // NavigatorConnectContext implementation.
  44   void AddFactory(scoped_ptr<NavigatorConnectServiceFactory> factory) override;
  45
  46  private:
  47   ~NavigatorConnectContextImpl() override;
  48
  49   void AddFactoryOnIOThread(scoped_ptr<NavigatorConnectServiceFactory> factory);
  50
  51   // Callback called by service factories when a connection succeeded or failed.
  52   void OnConnectResult(const NavigatorConnectClient& client,
  53                        int client_message_port_id,
  54                        int client_port_route_id,
  55                        const ConnectCallback& callback,
  56                        MessagePortDelegate* delegate,
  57                        bool data_as_values);
  58
  59   // List of factories to try to handle URLs.
  60   ScopedVector<NavigatorConnectServiceFactory> service_factories_;
  61 };
  62
  63 }  // namespace content
  64
  65 #endif  // CONTENT_BROWSER_NAVIGATOR_CONNECT_NAVIGATOR_CONNECT_CONTEXT_IMPL_H_