zoom_observer.h revision 116680a4aac90f2aa7413d9095a592090648e557 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_
6#define CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_
7
8#include "chrome/browser/ui/zoom/zoom_controller.h"
9
10namespace content {
11class WebContents;
12}
13
14// Interface for objects that wish to be notified of changes in ZoomController.
15class ZoomObserver {
16 public:
17  // Notification that the zoom percentage has changed.
18  virtual void OnZoomChanged(const ZoomController::ZoomChangedEventData& data) {
19  }
20
21 protected:
22  virtual ~ZoomObserver() {}
23};
24
25#endif  // CHROME_BROWSER_UI_ZOOM_ZOOM_OBSERVER_H_
26