Application/ClockControlAccessibility.m

/*
 ClockControlAccessibility.m
 Accessorizes the clock cell.
 
 Author: M.E.
 
 Copyright (c) 2002, Apple Computer, Inc., all rights reserved.
*/
 
/*
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*/
 
 
#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 @"Analog Clock";
    } else if ([attribute isEqualToString:NSAccessibilityValueAttribute]) {
        return [self stringValue];
    } else if ([attribute isEqualToString:AppleSynthesisAttribute]) {
        return [NSString stringWithFormat:@"At the tone, the time will be %@, [[inpt phon]] b1IY IY IY IY IY IY IY IY IY 1IYp [[inpt text]]", [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 {
        return [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 @"Increment";
    } else if ([action isEqualToString:NSAccessibilityDecrementAction]) {
        return @"Decrement";
    } 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


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