athena/env/public/athena_env.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 ATHENA_ENV_PUBLIC_ATHENA_ENV_H_
   6 #define ATHENA_ENV_PUBLIC_ATHENA_ENV_H_
   7
   8 #include "athena/athena_export.h"
   9 #include "base/callback_forward.h"
  10
  11 namespace aura {
  12 class WindowTreeHost;
  13 }
  14
  15 namespace gfx {
  16 class Insets;
  17 }
  18
  19 namespace athena {
  20
  21 // AthenaEnv creates/shuts down the environment necessary to
  22 // start Athena shell.
  23 class ATHENA_EXPORT AthenaEnv {
  24  public:
  25   static void Create();
  26   static AthenaEnv* Get();
  27   static void Shutdown();
  28
  29   virtual ~AthenaEnv() {}
  30
  31   // Returns the single WindowTreeHost for the primary display.
  32   virtual aura::WindowTreeHost* GetHost() = 0;
  33
  34   // Sets the insets for the primary displays's work area.
  35   virtual void SetDisplayWorkAreaInsets(const gfx::Insets& insets) = 0;
  36
  37   // Adds the callback called when the athena is about to exit.
  38   virtual void AddTerminatingCallback(const base::Closure& closure) = 0;
  39   virtual void RemoveTerminatingCallback(const base::Closure& closure) = 0;
  40
  41   // Called when the athena is about to exist.
  42   virtual void OnTerminating() = 0;
  43 };
  44
  45 }  // namespace athena
  46
  47 #endif  // ATHENA_ENV_PUBLIC_ATHENA_ENV_H_