Re: text-input-pane and pane focus questions

[Thanks for both the responses]

* Martin Simmons Wrote on Fri, 16 Oct 2009 15:09:06 +0100:

|>>>>> On Fri, 16 Oct 2009 08:30:51 +0530, Madhu  said:
|> - Would it be possible to handle keyboard events (specifically arrow
|> keys like <LEFT> <UP> )in a text-input-pane? perhaps via
|> :change-callback
|
| Not for general input, but left and right already go to the
| :change-callback is the caret moves.

I think the ability to pass on a few non-edit-text-changing-gestures
would be useful, if only to bind to or call existing callbacks: like the
completion prompter or cancel-callback (instead of going through toolbar
buttons)

|> - is there any available mechanism to specify an "ordering" for pane
|>   focus in a layout
|
| No, not within a single layout (The order is defined by the coordinates).
| However, the overall order is computed using the layout heirarchy so that
| gives some control.
|
| Do you have an example that doesn't work as you would expect?

No, But consider the case of a dialog, where one may validate all input
panes on a submit callback and compute a list of panes with invalid
values.  Now I have a subset of panes which are interesting, and I would
like to appropriate the `next pane' gesture to cycle through this subset
(without disabling other panes)

|> - is there any available mechanism to change the pane focus to the
|>   "next" pane-to-be-focussed in a layout in response to input events?
|
| CAPI:SET-PANE-FOCUS sets the focus, but you have to choose which pane.

In Motif, the TAB gesture [usually] changes pane focus to the `next
pane' in the order computed by CAPI.  Sometimes, in the context of a
simple-pane, it appears desirable to invoke this action [when the pane
input is valid, or from within the :callback].  I am not sure I can do
this.  It is also desirable to invoke this `default cycle' action from
an output pane where then the TAB gesture is now handled by the
input-model.

--
Madhu