| // 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 CHROME_BROWSER_UI_NATIVE_FOCUS_TRACKER_H_ |
| #define CHROME_BROWSER_UI_NATIVE_FOCUS_TRACKER_H_ |
| |
| #include "base/basictypes.h" |
| |
| class Browser; |
| |
| // NativeFocusTracker is responsible for tracking changes to the active Browser |
| // and notifying NativeFocusTrackerHost of these changes. If a non-Browser |
| // window becomes active SetBrowser(NULL) should be invoked. |
| // |
| // ActiveTabTracker creates a NativeFocusTracker. |
| class NativeFocusTrackerHost { |
| public: |
| virtual void SetBrowser(Browser* browser) = 0; |
| |
| protected: |
| virtual ~NativeFocusTrackerHost() {} |
| }; |
| |
| class NativeFocusTracker { |
| public: |
| virtual ~NativeFocusTracker() {} |
| |
| // Factory method, caller owns returned object. |
| static NativeFocusTracker* Create(NativeFocusTrackerHost* host); |
| |
| protected: |
| NativeFocusTracker() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(NativeFocusTracker); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_NATIVE_FOCUS_TRACKER_H_ |