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      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_COMMON_MOJO_SERVICE_REGISTRY_IMPL_H_
      6 #define CONTENT_COMMON_MOJO_SERVICE_REGISTRY_IMPL_H_
      7 
      8 #include <map>
      9 #include <queue>
     10 #include <string>
     11 #include <utility>
     12 
     13 #include "base/callback.h"
     14 #include "base/memory/weak_ptr.h"
     15 #include "content/public/common/service_registry.h"
     16 #include "mojo/public/cpp/bindings/interface_impl.h"
     17 #include "mojo/public/cpp/system/core.h"
     18 #include "mojo/public/interfaces/application/service_provider.mojom.h"
     19 
     20 namespace content {
     21 
     22 class ServiceRegistryImpl : public ServiceRegistry,
     23                             public mojo::InterfaceImpl<mojo::ServiceProvider> {
     24  public:
     25   ServiceRegistryImpl();
     26   explicit ServiceRegistryImpl(mojo::ScopedMessagePipeHandle handle);
     27   virtual ~ServiceRegistryImpl();
     28 
     29   // Binds to a remote ServiceProvider. This will expose added services to the
     30   // remote ServiceProvider with the corresponding handle and enable
     31   // ConnectToRemoteService to provide access to services exposed by the remote
     32   // ServiceProvider.
     33   void BindRemoteServiceProvider(mojo::ScopedMessagePipeHandle handle);
     34 
     35   // ServiceRegistry overrides.
     36   virtual void AddService(
     37       const std::string& service_name,
     38       const base::Callback<void(mojo::ScopedMessagePipeHandle)> service_factory)
     39       OVERRIDE;
     40   virtual void RemoveService(const std::string& service_name) OVERRIDE;
     41   virtual void ConnectToRemoteService(
     42       const base::StringPiece& service_name,
     43       mojo::ScopedMessagePipeHandle handle) OVERRIDE;
     44 
     45   base::WeakPtr<ServiceRegistry> GetWeakPtr();
     46 
     47  private:
     48   // mojo::InterfaceImpl<mojo::ServiceProvider> overrides.
     49   virtual void ConnectToService(
     50       const mojo::String& name,
     51       mojo::ScopedMessagePipeHandle client_handle) OVERRIDE;
     52   virtual void OnConnectionError() OVERRIDE;
     53 
     54   std::map<std::string, base::Callback<void(mojo::ScopedMessagePipeHandle)> >
     55       service_factories_;
     56   std::queue<std::pair<std::string, mojo::MessagePipeHandle> >
     57       pending_connects_;
     58   bool bound_;
     59 
     60   base::WeakPtrFactory<ServiceRegistry> weak_factory_;
     61 };
     62 
     63 }  // namespace content
     64 
     65 #endif  // CONTENT_COMMON_MOJO_SERVICE_REGISTRY_IMPL_H_
     66