Why not store all your references in an array (a little lookup table), then set
the firstResponder to the reference from the index of the object in the array +
1 and roll over to index 0 if the index is past the count of the array?
Shouldn't it be [self makeFirstResponder:myTextFieldRef]?
On Aug 2, 2015, at 10:13 PM, Ken Thomases wrote:
> On Aug 2, 2015, at 7:29 PM, Graham Cox wrote:
>
>> I have a series of NSTextFields and I want to automatically move the
>> keyboard focus to the ‘next’ field when the one preceding it has a certain
>> number of characters entered. My code is:
>>
>> - (void) controlTextDidChange:(NSNotification*) obj
>> {
>> NSTextField* control = [obj object];
>>
>> NSString* text = [control stringValue];
>>
>> if([text length] >= 4 )
>> {
>> NSString* shortStr = [[text substringToIndex:4]
>> uppercaseString];
>> [control setStringValue:shortStr];
>>
>> NSResponder* nextField = [control nextKeyView];
>>
>> NSLog(@"got 4 characters: '%@', moving to field: %@", shortStr,
>> nextField );
>>
>> [[self window] makeFirstResponder:nextField];
>> }
>> }
>
> You can try [[self window] selectKeyViewFollowingView:control] instead.
>
> If that doesn't work, you can try [control.currentEditor
> tryToPerform:@selector(insertTab:) with:self].
>
>
>> … the code does what it should, detecting the string length and calling
>> -makeFirstResponder when it gets a length of 4 or more …
>>
>> The current field does lose focus, but the next field never gains it, so the
>> flow of text entry from field to field doesn’t occur as it should. Also,
>> even though the first field is set as the window’s initialFirstResponder,
>> and does get the keyboard focus ring, the actual field editor isn’t ready
>> and typing just produces a beep - the user has to click in the field to make
>> it accept text. These probems may well be related.
>
> Are you certain the window is key? Does your app do anything unusual with
> activationPolicy or activation, generally?
>
> Regards,
> Ken
>
>
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