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      1 //
      2 //  Copyright (C) 2015 Google, Inc.
      3 //
      4 //  Licensed under the Apache License, Version 2.0 (the "License");
      5 //  you may not use this file except in compliance with the License.
      6 //  You may obtain a copy of the License at:
      7 //
      8 //  http://www.apache.org/licenses/LICENSE-2.0
      9 //
     10 //  Unless required by applicable law or agreed to in writing, software
     11 //  distributed under the License is distributed on an "AS IS" BASIS,
     12 //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 //  See the License for the specific language governing permissions and
     14 //  limitations under the License.
     15 //
     16 
     17 #pragma once
     18 
     19 #include <base/macros.h>
     20 #include <base/memory/ref_counted.h>
     21 
     22 #include "service/ipc/ipc_manager.h"
     23 
     24 namespace bluetooth {
     25 class Adapter;
     26 }  // namespace bluetooth
     27 
     28 namespace ipc {
     29 
     30 // IPCHandler is an interface that classes implementing different IPC mechanisms
     31 // must conform to.
     32 class IPCHandler : public base::RefCountedThreadSafe<IPCHandler> {
     33  public:
     34   IPCHandler(bluetooth::Adapter* adapter, IPCManager::Delegate* delegate);
     35   virtual ~IPCHandler();
     36 
     37   // Initializes and runs the IPC mechanism. Returns true on success, false
     38   // otherwise.
     39   virtual bool Run() = 0;
     40 
     41   // Stops the IPC mechanism.
     42   virtual void Stop() = 0;
     43 
     44  protected:
     45   // Getters for private members to allow subclasses to access them in read-only
     46   // fashion.
     47   bluetooth::Adapter* adapter() const { return adapter_; }
     48   IPCManager::Delegate* delegate() const { return delegate_; }
     49 
     50  private:
     51   IPCHandler() = default;
     52 
     53   // Weak reference to the global Adapter instance.
     54   bluetooth::Adapter* adapter_;
     55 
     56   // The delegate that is interested in notifications from us.
     57   IPCManager::Delegate* delegate_;
     58 
     59   DISALLOW_COPY_AND_ASSIGN(IPCHandler);
     60 };
     61 
     62 }  // namespace ipc
     63