mojo/shell/ui_application_loader_android.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 MOJO_SHELL_UI_APPLICATION_LOADER_ANDROID_H_
   6 #define MOJO_SHELL_UI_APPLICATION_LOADER_ANDROID_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "mojo/application_manager/application_loader.h"
  10
  11 namespace mojo {
  12
  13 class ApplicationManager;
  14
  15 namespace shell {
  16 class Context;
  17 }
  18
  19 // ApplicationLoader implementation that creates a background thread and issues
  20 // load
  21 // requests there.
  22 class UIApplicationLoader : public ApplicationLoader {
  23  public:
  24   UIApplicationLoader(scoped_ptr<ApplicationLoader> real_loader,
  25                       shell::Context* context);
  26   virtual ~UIApplicationLoader();
  27
  28   // ApplicationLoader overrides:
  29   virtual void Load(ApplicationManager* manager,
  30                     const GURL& url,
  31                     scoped_refptr<LoadCallbacks> callbacks) OVERRIDE;
  32   virtual void OnApplicationError(ApplicationManager* manager,
  33                                   const GURL& url) OVERRIDE;
  34
  35  private:
  36   class UILoader;
  37
  38   // These functions are exected on the background thread. They call through
  39   // to |background_loader_| to do the actual loading.
  40   // TODO: having this code take a |manager| is fragile (as ApplicationManager
  41   // isn't thread safe).
  42   void LoadOnUIThread(ApplicationManager* manager,
  43                       const GURL& url,
  44                       ScopedMessagePipeHandle* shell_handle);
  45   void OnApplicationErrorOnUIThread(ApplicationManager* manager,
  46                                     const GURL& url);
  47   void ShutdownOnUIThread();
  48
  49   scoped_ptr<ApplicationLoader> loader_;
  50   shell::Context* context_;
  51
  52   // Lives on the UI thread. Trivial interface that calls through to |loader_|.
  53   UILoader* ui_loader_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(UIApplicationLoader);
  56 };
  57
  58 }  // namespace mojo
  59
  60 #endif  // MOJO_SHELL_UI_APPLICATION_LOADER_ANDROID_H_