| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| #import "FullKeyboardAccessWatcher.h" |
| |
| NSString * const KeyboardUIModeDidChangeNotification = @"com.apple.KeyboardUIModeDidChange"; |
| const CFStringRef AppleKeyboardUIMode = CFSTR("AppleKeyboardUIMode"); |
| const CFStringRef UniversalAccessDomain = CFSTR("com.apple.universalaccess"); |
| |
| @implementation FullKeyboardAccessWatcher |
| |
| - (void)retrieveKeyboardUIModeFromPreferences:(NSNotification *)notification |
| { |
| CFPreferencesAppSynchronize(UniversalAccessDomain); |
| |
| Boolean keyExistsAndHasValidFormat; |
| int mode = CFPreferencesGetAppIntegerValue(AppleKeyboardUIMode, UniversalAccessDomain, &keyExistsAndHasValidFormat); |
| if (keyExistsAndHasValidFormat) { |
| // The keyboard access mode is reported by two bits: |
| // Bit 0 is set if feature is on |
| // Bit 1 is set if full keyboard access works for any control, not just text boxes and lists. |
| fullKeyboardAccessEnabled = (mode & 0x2); |
| } |
| } |
| |
| - (id)init |
| { |
| self = [super init]; |
| if (!self) |
| return nil; |
| |
| [self retrieveKeyboardUIModeFromPreferences:nil]; |
| |
| [[NSDistributedNotificationCenter defaultCenter] |
| addObserver:self selector:@selector(retrieveKeyboardUIModeFromPreferences:) |
| name:KeyboardUIModeDidChangeNotification object:nil]; |
| |
| return self; |
| } |
| |
| + (BOOL)fullKeyboardAccessEnabled |
| { |
| static FullKeyboardAccessWatcher *watcher = [[FullKeyboardAccessWatcher alloc] init]; |
| return watcher->fullKeyboardAccessEnabled; |
| } |
| |
| @end |