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/*
* 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 "WKFullKeyboardAccessWatcher.h"
#import "WebContext.h"
NSString * const KeyboardUIModeDidChangeNotification = @"com.apple.KeyboardUIModeDidChange";
const CFStringRef AppleKeyboardUIMode = CFSTR("AppleKeyboardUIMode");
const CFStringRef UniversalAccessDomain = CFSTR("com.apple.universalaccess");
using namespace WebKit;
@implementation WKFullKeyboardAccessWatcher
- (void)notifyAllWebContexts
{
const Vector<WebContext*>& contexts = WebContext::allContexts();
for (size_t i = 0; i < contexts.size(); ++i)
contexts[i]->fullKeyboardAccessModeChanged(fullKeyboardAccessEnabled);
}
- (void)retrieveKeyboardUIModeFromPreferences:(NSNotification *)notification
{
BOOL oldValue = fullKeyboardAccessEnabled;
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);
}
if (fullKeyboardAccessEnabled != oldValue)
[self notifyAllWebContexts];
}
- (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 WKFullKeyboardAccessWatcher *watcher = [[WKFullKeyboardAccessWatcher alloc] init];
return watcher->fullKeyboardAccessEnabled;
}
@end
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