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