| // Copyright (c) 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 UI_MESSAGE_CENTER_UI_DELEGATE_H_ |
| #define UI_MESSAGE_CENTER_UI_DELEGATE_H_ |
| |
| #include "ui/message_center/message_center_export.h" |
| |
| namespace message_center { |
| |
| // A UiDelegate class is responsible for managing the various UI surfaces |
| // (MessageCenter and popups) as notifications are added and updated. |
| // Implementations are platform specific. |
| class MESSAGE_CENTER_EXPORT UiDelegate { |
| public: |
| virtual ~UiDelegate(){}; |
| |
| // Called whenever a change to the visible UI has occurred. |
| virtual void OnMessageCenterContentsChanged() = 0; |
| |
| // Display the popup bubbles for new notifications to the user. Returns true |
| // if popups were actually displayed to the user. |
| virtual bool ShowPopups() = 0; |
| |
| // Remove the popup bubbles from the UI. |
| virtual void HidePopups() = 0; |
| |
| // Display the message center containing all undismissed notifications to the |
| // user. Set |show_by_click| to true if message center is shown by mouse or |
| // gesture click. Returns true if the center was actually displayed to the |
| // user. |
| virtual bool ShowMessageCenter(bool show_by_click) = 0; |
| |
| // Remove the message center from the UI. |
| virtual void HideMessageCenter() = 0; |
| |
| // Display the notifier settings as a bubble. |
| virtual bool ShowNotifierSettings() = 0; |
| }; |
| |
| } // namespace message_center |
| |
| #endif // UI_MESSAGE_CENTER_UI_DELEGATE_H_ |