Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
ClockControlAccessibility.m
/* |
File: ClockControlAccessibility.m |
Abstract: Accessorizes the clock cell. |
Version: 1.0 |
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Copyright (C) 2009 Apple Inc. All Rights Reserved. |
*/ |
#import <ClockControl.h> |
#import <AppKit/NSAccessibility.h> |
@implementation ClockCell (ClockCellAccessibility) |
NSString *AppleSynthesisAttribute = @"AppleSynthesis"; |
// Attributes |
// |
// Add a value attribute which is settable. Add an AppleSynthesis attribute for yucks. Inherit role (which we override) as well as size, position, ... which we can leave alone. |
- (NSArray *)accessibilityAttributeNames { |
static NSArray *attributes = nil; |
if (attributes == nil) { |
attributes = [[[super accessibilityAttributeNames] arrayByAddingObjectsFromArray:[NSArray arrayWithObjects:NSAccessibilityValueAttribute, AppleSynthesisAttribute, nil]] retain]; |
} |
return attributes; |
} |
- (id)accessibilityAttributeValue:(NSString *)attribute { |
if ([attribute isEqualToString:NSAccessibilityRoleAttribute]) { |
return @"AnalogClock"; |
} else if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute]) { |
return NSLocalizedString(@"Analog Clock", "Description of clock control for accessibility purposes"); |
} else if ([attribute isEqualToString:NSAccessibilityValueAttribute]) { |
return [self stringValue]; |
} else if ([attribute isEqualToString:AppleSynthesisAttribute]) { |
return [NSString stringWithFormat:NSLocalizedString(@"At the tone, the time will be %@, [[inpt phon]] b1IY IY IY IY IY IY IY IY IY 1IYp [[inpt text]]", "String to read the time for accessibility purposes"), [self stringValue]]; |
} else { |
return [super accessibilityAttributeValue:attribute]; |
} |
} |
- (BOOL)accessibilityIsAttributeSettable:(NSString *)attribute { |
if ([attribute isEqualToString:NSAccessibilityValueAttribute]) { |
return YES; |
} else if ([attribute isEqualToString:AppleSynthesisAttribute]) { |
return NO; |
} else { |
return [super accessibilityIsAttributeSettable:attribute]; |
} |
} |
- (void)accessibilitySetValue:(id)value forAttribute:(NSString *)attribute { |
if ([attribute isEqualToString:NSAccessibilityValueAttribute]) { |
[self setStringValue:value]; |
} else { |
[super accessibilitySetValue:value forAttribute:attribute]; |
} |
} |
// Actions |
// |
// Implement increment/decrement to act like the arrow keys |
- (NSArray *)accessibilityActionNames { |
return [NSArray arrayWithObjects:NSAccessibilityIncrementAction, NSAccessibilityDecrementAction, nil]; |
} |
- (NSString *)accessibilityActionDescription:(NSString *)action { |
if ([action isEqualToString:NSAccessibilityIncrementAction]) { |
return NSLocalizedString(@"Increment", "Description of time increment action, for accessibility purposes"); |
} else if ([action isEqualToString:NSAccessibilityDecrementAction]) { |
return NSLocalizedString(@"Decrement", "Description of time decrement action, for accessibility purposes"); |
} else { |
return [super accessibilityActionDescription:action]; |
} |
} |
- (void)accessibilityPerformAction:(NSString *)action { |
if ([action isEqualToString:NSAccessibilityIncrementAction]) { |
[self moveRight:self]; |
} else if ([action isEqualToString:NSAccessibilityDecrementAction]) { |
[self moveLeft:self]; |
} else { |
[super accessibilityPerformAction:action]; |
} |
} |
@end |
Copyright © 2009 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2009-05-26