| // Copyright 2013 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 APPS_APP_LAUNCHER_H_ |
| #define APPS_APP_LAUNCHER_H_ |
| |
| #include "base/callback_forward.h" |
| |
| namespace apps { |
| |
| // Called on the UI thread after determining if the launcher is enabled. A |
| // boolean flag is passed, which is true if the app launcher is enabled. |
| typedef base::Callback<void(bool)> OnAppLauncherEnabledCompleted; |
| |
| // TODO(calamity): Remove all the "uncertain" apis because windows app launcher |
| // enabled is now just a single pref that we can check synchronously and with |
| // confidence. This includes changing GetIsAppLauncherEnabled to a synchronous |
| // API. |
| |
| // A synchronous check to determine if the app launcher is enabled. If the |
| // registry needs to be determined to find an accurate answer, this function |
| // will NOT do so; instead if will default to false (the app launcher is not |
| // enabled). |
| // This function does not use the cached preference of whether the launcher |
| // was enabled or not. |
| bool MaybeIsAppLauncherEnabled(); |
| |
| // Determine whether the app launcher is enabled or not. This may involve a trip |
| // to a blocking thread. |completion_callback| is called when an answer is |
| // ready. This needs to be called on the UI thread. |
| void GetIsAppLauncherEnabled( |
| const OnAppLauncherEnabledCompleted& completion_callback); |
| |
| // Returns whether the app launcher was enabled the last time it was checked. |
| bool WasAppLauncherEnabled(); |
| |
| } // namespace apps |
| |
| #endif // APPS_APP_LAUNCHER_H_ |