Initializing NSDecimalTabStopType returns NSRightTabStopType
-
I've filed a bug on this (5757951) but I hope there's a workaround.
The initializer for creating a NSTextTab of type NSDecimalTabStopType
is initWithAlignment:(NSTextAlignment)alignment location:
(CGFloat)location options:(NSDictionary *)options. There is no
NSTextAlignment for dec tabs, so you use NSRightTextAlignment, and the
initializer apparently figures out that you want a decimal tab by
looking in the options dictionary.
But usually I get a right-aligned textTab even though I've requested a
decimal-aligned textTab. Sometimes an incantation can help:
// Create an options dictionary to be used in creating a decimal
NSTextTab:
NSCharacterSet *charSet = [NSCharacterSet
characterSetWithCharactersInString:@"."];
NSDictionary *optionsDict = [NSDictionary
dictionaryWithObject:charSet
forKey:NSTabColumnTerminatorsAttributeName];
// try to create a decimal NSTextTab using that options dict:
NSTextTab *textTab1 = [[NSTextTab alloc]
initWithTextAlignment:NSRightTextAlignment
location:location
options:optionsDict];
NSLog(@"tabStopType is %i", [textTab1 tabStopType]);
// Doesn't work; tabStopType is 1 (right)
// Create and release a default decimal NSTextTab:
NSTextTab *dummyTab = [[NSTextTab alloc]
initWithType:NSDecimalTabStopType location:location];
[dummyTab release];
// Now try again to create the decimal NSTextTab using the same
options dict:
NSTextTab *textTab2 = [[NSTextTab alloc]
initWithTextAlignment:NSRightTextAlignment
location:location
options:optionsDict];
NSLog(@"tabStopType is %i", [textTab2 tabStopType]);
// It works; tabStopType is 3 (decimal)
but sometimes I get the right-aligned textTab no matter what.
Any ideas on a sure-fire way to initialize a decimal NSTextTab?
Ross -
Ross,
Thank you for filing the bug.
Indeed there is a bug in NSTextTab.
Fortunately, it only affects -tabStopType method. The actual instance
created works as a decimal tab.
Aki
On 2008/02/21, at 14:30, Ross Carter wrote:> I've filed a bug on this (5757951) but I hope there's a workaround.
> The initializer for creating a NSTextTab of type
> NSDecimalTabStopType is initWithAlignment:(NSTextAlignment)alignment
> location:(CGFloat)location options:(NSDictionary *)options. There is
> no NSTextAlignment for dec tabs, so you use NSRightTextAlignment,
> and the initializer apparently figures out that you want a decimal
> tab by looking in the options dictionary.
>
> But usually I get a right-aligned textTab even though I've requested
> a decimal-aligned textTab. Sometimes an incantation can help:
>
> // Create an options dictionary to be used in creating a decimal
> NSTextTab:
> NSCharacterSet *charSet = [NSCharacterSet
> characterSetWithCharactersInString:@"."];
> NSDictionary *optionsDict = [NSDictionary
> dictionaryWithObject:charSet
> forKey:NSTabColumnTerminatorsAttributeName];
>
> // try to create a decimal NSTextTab using that options dict:
> NSTextTab *textTab1 = [[NSTextTab alloc]
> initWithTextAlignment:NSRightTextAlignment
> location:location
> options:optionsDict];
> NSLog(@"tabStopType is %i", [textTab1 tabStopType]);
> // Doesn't work; tabStopType is 1 (right)
>
> // Create and release a default decimal NSTextTab:
> NSTextTab *dummyTab = [[NSTextTab alloc]
> initWithType:NSDecimalTabStopType location:location];
> [dummyTab release];
>
> // Now try again to create the decimal NSTextTab using the same
> options dict:
> NSTextTab *textTab2 = [[NSTextTab alloc]
> initWithTextAlignment:NSRightTextAlignment
> location:location
> options:optionsDict];
> NSLog(@"tabStopType is %i", [textTab2 tabStopType]);
> // It works; tabStopType is 3 (decimal)
>
> but sometimes I get the right-aligned textTab no matter what.
>
> Any ideas on a sure-fire way to initialize a decimal NSTextTab?
>
> Ross -
Thanks, Aki. That's exactly what I needed. This now works:
NSTextTabType tabType = [textTab tabStopType];
if (tabType == NSRightTabStopType && [[textTab options]
objectForKey:NSTabColumnTerminatorsAttributeName] != nil) tabType =
NSDecimalTabStopType;
Ross
On Feb 21, 2008, at 5:48 PM, Aki Inoue wrote:> Ross,
>
> Thank you for filing the bug.
>
> Indeed there is a bug in NSTextTab.
>
> Fortunately, it only affects -tabStopType method. The actual
> instance created works as a decimal tab.
>
> Aki
>
> On 2008/02/21, at 14:30, Ross Carter wrote:
>> I've filed a bug on this (5757951) but I hope there's a workaround.
>> The initializer for creating a NSTextTab of type
>> NSDecimalTabStopType is initWithAlignment:
>> (NSTextAlignment)alignment location:(CGFloat)location options:
>> (NSDictionary *)options. There is no NSTextAlignment for dec tabs,
>> so you use NSRightTextAlignment, and the initializer apparently
>> figures out that you want a decimal tab by looking in the options
>> dictionary.
>>
>> But usually I get a right-aligned textTab even though I've
>> requested a decimal-aligned textTab. Sometimes an incantation can
>> help:
>>
>> // Create an options dictionary to be used in creating a decimal
>> NSTextTab:
>> NSCharacterSet *charSet = [NSCharacterSet
>> characterSetWithCharactersInString:@"."];
>> NSDictionary *optionsDict = [NSDictionary
>> dictionaryWithObject:charSet
>> forKey:NSTabColumnTerminatorsAttributeName];
>>
>> // try to create a decimal NSTextTab using that options dict:
>> NSTextTab *textTab1 = [[NSTextTab alloc]
>> initWithTextAlignment:NSRightTextAlignment
>> location:location
>> options:optionsDict];
>> NSLog(@"tabStopType is %i", [textTab1 tabStopType]);
>> // Doesn't work; tabStopType is 1 (right)
>>
>> // Create and release a default decimal NSTextTab:
>> NSTextTab *dummyTab = [[NSTextTab alloc]
>> initWithType:NSDecimalTabStopType location:location];
>> [dummyTab release];
>>
>> // Now try again to create the decimal NSTextTab using the same
>> options dict:
>> NSTextTab *textTab2 = [[NSTextTab alloc]
>> initWithTextAlignment:NSRightTextAlignment
>> location:location
>> options:optionsDict];
>> NSLog(@"tabStopType is %i", [textTab2 tabStopType]);
>> // It works; tabStopType is 3 (decimal)
>>
>> but sometimes I get the right-aligned textTab no matter what.
>>
>> Any ideas on a sure-fire way to initialize a decimal NSTextTab?
>>
>> Ross
>
>
