Hey John,
thanks for the pointer. I used a similar pattern before but at that
time it was just a selector without parameter. AFAIU
cancelPreviousPerformRequestsWithTarget:selector:object will match the
object parameter to see what to cancel. (and nil is not a match-all).
Since here the parameter is changing it didn't feel like the right way
to go but...
On the other hand maybe I could just store away the value and the use
the same pattern for updates. Along the lines of
-(void)setValue:(NSObject*)value
{
self.value = value;
[NSObject
cancelPreviousPerformRequestsWithTarget:self
selector:@selector(updateValue)
object:nil];
[self performSelector:@selector(updateValue)
withObject:nil];
afterDelay:kSliderDelay];
}
-(void)update
{
// slow update from self.value
}
cheers,
Torsten
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