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 #import <Cocoa/Cocoa.h> 6 7 #include "base/mac/scoped_nsobject.h" 8 #include "ui/base/ui_base_export.h" 9 10 // A class that handles saving and restoring focus. An instance of 11 // this class snapshots the currently focused view when it is 12 // constructed, and callers can use restoreFocus to return focus to 13 // that view. FocusTracker will not restore focus to views that are 14 // no longer in the view hierarchy or are not in the correct window. 15 UI_BASE_EXPORT 16 @interface FocusTracker : NSObject { 17 @private 18 base::scoped_nsobject<NSView> focusedView_; 19 } 20 21 // |window| is the window that we are saving focus for. This 22 // method snapshots the currently focused view. 23 - (id)initWithWindow:(NSWindow*)window; 24 25 // Attempts to restore focus to the snapshotted view. Returns YES if 26 // focus was restored. Will not restore focus if the view is no 27 // longer in the view hierarchy under |window|. 28 - (BOOL)restoreFocusInWindow:(NSWindow*)window; 29 @end 30
