content/browser/mojo/mojo_application_host.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_MOJO_MOJO_APPLICATION_HOST_H_
   6 #define CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/process/process_handle.h"
  10 #include "content/common/mojo/service_registry_impl.h"
  11 #include "mojo/edk/embedder/channel_init.h"
  12 #include "mojo/edk/embedder/scoped_platform_handle.h"
  13
  14 #if defined(OS_ANDROID)
  15 #include "content/browser/mojo/service_registry_android.h"
  16 #endif
  17
  18 namespace IPC {
  19 class Sender;
  20 }
  21
  22 namespace content {
  23
  24 // MojoApplicationHost represents the code needed on the browser side to setup
  25 // a child process as a Mojo application via Chrome IPC. The child process
  26 // should use MojoApplication to handle messages generated by an instance of
  27 // MojoApplicationHost. MojoApplicationHost makes the ServiceRegistry interface
  28 // available so that child-provided services can be invoked.
  29 class MojoApplicationHost {
  30  public:
  31   MojoApplicationHost();
  32   virtual ~MojoApplicationHost();
  33
  34   // Two-phase initialization:
  35   //  1- Init makes service_registry() available synchronously.
  36   //  2- Activate establishes the actual connection to the peer process.
  37   bool Init();
  38   void Activate(IPC::Sender* sender, base::ProcessHandle process_handle);
  39
  40   void WillDestroySoon();
  41
  42   ServiceRegistry* service_registry() { return &service_registry_; }
  43
  44  private:
  45   mojo::embedder::ChannelInit channel_init_;
  46   mojo::embedder::ScopedPlatformHandle client_handle_;
  47
  48   bool did_activate_;
  49
  50   ServiceRegistryImpl service_registry_;
  51
  52 #if defined(OS_ANDROID)
  53   scoped_ptr<ServiceRegistryAndroid> service_registry_android_;
  54 #endif
  55
  56   DISALLOW_COPY_AND_ASSIGN(MojoApplicationHost);
  57 };
  58
  59 }  // namespace content
  60
  61 #endif  // CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_