| // Copyright (c) 2012 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 COMPONENTS_UI_ZOOM_ZOOM_OBSERVER_H_ |
| #define COMPONENTS_UI_ZOOM_ZOOM_OBSERVER_H_ |
| |
| #include "components/ui/zoom/zoom_controller.h" |
| |
| namespace ui_zoom { |
| |
| // Interface for objects that wish to be notified of changes in ZoomController. |
| class ZoomObserver { |
| public: |
| // Notification that the zoom percentage has changed. |
| virtual void OnZoomChanged(const ZoomController::ZoomChangedEventData& data) { |
| } |
| |
| protected: |
| virtual ~ZoomObserver() {} |
| }; |
| |
| } // namespace ui_zoom |
| |
| #endif // COMPONENTS_UI_ZOOM_ZOOM_OBSERVER_H_ |
