| // Copyright 2017 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 CHROME_BROWSER_VR_TOOLBAR_HELPER_H_ |
| #define CHROME_BROWSER_VR_TOOLBAR_HELPER_H_ |
| |
| #include "chrome/browser/vr/browser_ui_interface.h" |
| #include "chrome/browser/vr/model/toolbar_state.h" |
| #include "chrome/browser/vr/vr_export.h" |
| |
| class ToolbarModel; |
| class ToolbarModelDelegate; |
| |
| namespace vr { |
| |
| class BrowserUiInterface; |
| |
| // This class houses an instance of ToolbarModel, and queries it when requested, |
| // passing a snapshot of the toolbar state to the UI when necessary. |
| class VR_EXPORT ToolbarHelper { |
| public: |
| ToolbarHelper(BrowserUiInterface* ui, ToolbarModelDelegate* delegate); |
| virtual ~ToolbarHelper(); |
| |
| // Poll ToolbarModel and post an update to the UI if state has changed. |
| void Update(); |
| |
| private: |
| BrowserUiInterface* ui_; |
| std::unique_ptr<ToolbarModel> toolbar_model_; |
| ToolbarState current_state_; |
| }; |
| |
| } // namespace vr |
| |
| #endif // CHROME_BROWSER_VR_TOOLBAR_HELPER_H_ |