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mojo/shell/android/ui_application_loader_android.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SHELL_ANDROID_UI_APPLICATION_LOADER_ANDROID_H_
+#define SHELL_ANDROID_UI_APPLICATION_LOADER_ANDROID_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "mojo/shell/application_manager/application_loader.h"
+
+namespace base {
+class MessageLoop;
+}
+
+namespace mojo {
+namespace shell {
+
+class ApplicationManager;
+
+// ApplicationLoader implementation that creates a background thread and issues
+// load
+// requests there.
+class UIApplicationLoader : public ApplicationLoader {
+ public:
+  UIApplicationLoader(scoped_ptr<ApplicationLoader> real_loader,
+                      base::MessageLoop* ui_message_loop);
+  ~UIApplicationLoader() override;
+
+  // ApplicationLoader overrides:
+  void Load(const GURL& url,
+            InterfaceRequest<Application> application_request) override;
+
+ private:
+  class UILoader;
+
+  // These functions are exected on the background thread. They call through
+  // to |background_loader_| to do the actual loading.
+  // TODO: having this code take a |manager| is fragile (as ApplicationManager
+  // isn't thread safe).
+  void LoadOnUIThread(const GURL& url,
+                      InterfaceRequest<Application> application_request);
+  void ShutdownOnUIThread();
+
+  scoped_ptr<ApplicationLoader> loader_;
+  base::MessageLoop* ui_message_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(UIApplicationLoader);
+};
+
+}  // namespace shell
+}  // namespace mojo
+
+#endif  // SHELL_ANDROID_UI_APPLICATION_LOADER_ANDROID_H_