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