Run into a bug where if I have a number of NSTextFields in a window, and
programatically switch the first responder of the window among these fields, it
works fine, but if there is a NSTabView interposed between the fields and the
window, they just cannot be set to be first responder programatically at all -
it goes through the motions but it fails silently.
The text field has a blue focus ring, but there is no blinking cursor and
typing results in a beep. The exact same code, without the tab view, works fine.
The field editor delegate causes the text field focus to shift every 4
characters:
- (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 );
if([nextField acceptsFirstResponder])
[[self window] makeFirstResponder:nextField];
}
[self conditionallyEnableOK];
}
The 'self' here is the window controller and field editor's delegate.
I also tested to see whether the window returned YES or NO from
makeFirstResponder: and it always returns YES, indicating success.
Has anyone else run into this? I've seen a few postings in the archives on
apparently similar topics, and one suggestion is to delay the
makeFirstResponder using -performSelector:... I have tried that but it doesn't
work either. Some of these postings go back to 2004 - it's hard to believe such
a painfully obvious bug would still be unfixed in 10.8
--Graham
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