52 lines
1.5 KiB
Objective-C
52 lines
1.5 KiB
Objective-C
#import "MASDictionaryTransformer.h"
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#import "MASShortcut.h"
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NSString *const MASDictionaryTransformerName = @"MASDictionaryTransformer";
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static NSString *const MASKeyCodeKey = @"keyCode";
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static NSString *const MASModifierFlagsKey = @"modifierFlags";
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@implementation MASDictionaryTransformer
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+ (BOOL) allowsReverseTransformation
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{
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return YES;
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}
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// Storing nil values as an empty dictionary lets us differ between
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// “not available, use default value” and “explicitly set to none”.
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// See http://stackoverflow.com/questions/5540760 for details.
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- (NSDictionary*) reverseTransformedValue: (MASShortcut*) shortcut
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{
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if (shortcut == nil) {
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return [NSDictionary dictionary];
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} else {
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return @{
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MASKeyCodeKey: @([shortcut keyCode]),
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MASModifierFlagsKey: @([shortcut modifierFlags])
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};
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}
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}
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- (MASShortcut*) transformedValue: (NSDictionary*) dictionary
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{
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// We have to be defensive here as the value may come from user defaults.
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if (![dictionary isKindOfClass:[NSDictionary class]]) {
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return nil;
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}
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id keyCodeBox = [dictionary objectForKey:MASKeyCodeKey];
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id modifierFlagsBox = [dictionary objectForKey:MASModifierFlagsKey];
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SEL integerValue = @selector(integerValue);
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if (![keyCodeBox respondsToSelector:integerValue] || ![modifierFlagsBox respondsToSelector:integerValue]) {
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return nil;
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}
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return [MASShortcut
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shortcutWithKeyCode:[keyCodeBox integerValue]
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modifierFlags:[modifierFlagsBox integerValue]];
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}
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@end
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