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