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 "ui/base/cocoa/focus_tracker.h" 6 7 #include "base/basictypes.h" 8 9 @implementation FocusTracker 10 11 - (id)initWithWindow:(NSWindow*)window { 12 if ((self = [super init])) { 13 NSResponder* current_focus = [window firstResponder]; 14 15 // Special case NSTextViews, because they are removed from the 16 // view hierarchy when their text field does not have focus. If 17 // an NSTextView is the current first responder, save a pointer to 18 // its NSTextField delegate instead. 19 if ([current_focus isKindOfClass:[NSTextView class]]) { 20 id delegate = [(NSTextView*)current_focus delegate]; 21 if ([delegate isKindOfClass:[NSTextField class]]) 22 current_focus = delegate; 23 else 24 current_focus = nil; 25 } 26 27 if ([current_focus isKindOfClass:[NSView class]]) { 28 NSView* current_focus_view = (NSView*)current_focus; 29 focusedView_.reset([current_focus_view retain]); 30 } 31 } 32 33 return self; 34 } 35 36 - (BOOL)restoreFocusInWindow:(NSWindow*)window { 37 if (!focusedView_.get()) 38 return NO; 39 40 if ([focusedView_ window] && [focusedView_ window] == window) 41 return [window makeFirstResponder:focusedView_.get()]; 42 43 return NO; 44 } 45 46 @end 47
