On 18 September 2010 05:59, Greg Brown <[email protected]> wrote:

> >>>> 3. (Improvement / New Feature)
> >>>>> XXX.keyTyped() methods which select the next item matching the
> keypress
> >>>>> should probably
> >>>>> - Move in the opposite direction when SHIFT is pressed
> >>>
> >>> Just as before, it is a continuation of the SHIFT key reversing
> direction
> >>
> >> That's what I figured, but is this a common convention? I have never
> heard
> >> of it before.
> >>
> >>
> > I couldn't tell you of a single place off the top of my head where this
> > does occur, but it was something that seemed natural to my (clearly)
> > perverted way of thinking ;)
>
> I can actually see the utility in it - but if it is not a widely known
> convention, users may not even think to try it, so not worth the effort of
> coding/testing.
>
> I'd rather see some effort go into the wrapping functionality, since this
> is actually a common convention that we don't currently support.
>
>
>

I was thinking that it might be worth trying to consolidate the way this
kind of thing is handled throughout Pivot as it happens in a number of
places and the resulting code is not especially pretty.

Something along the lines of

public static int helperMethod(Sequence<T> items, int startIndex, Direction
direction, Filter<T> filter)

You would pass it the list of items, a starting point & direction of
'travel'.
It would take care of the while loops to iterate over potentially the entire
sequence, until it finds an object T which fulfills the required selection
criteria (such as enabled and 'toString() starts with a letter A')

Possibly also include another boolean parameter to control if it 'wraps' or
ends when it hits the Sequence bounds.

Chris

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