Scripting & Custom Interface

[Steve Mills]

On Sep 20, 2006, at 08:22:27, chris denesha wrote:

> At 06:45 PM 9/19/2006 -0400, you wrote:
>> Hi Steve,
>>
>> It's been a while, but since I'm in a scripty mood today...
>>
>> Is there any way to prevent a User Palette from closing as a  
>> result of the
>> user clicking a Cancel button in a dialog brought up by another  
>> part of the
>> same script? I have a palette that stays open all the time as a  
>> launch pad
>> for other actions linked to buttons within it. In this case, if  
>> multiple
>> docs are detected, a warning dialog appears, but if you change  
>> your mind and
>> hit Cancel, the launch pad palette disappears as well.
>
> I haven't played with user palettes yet but I can think of two  
> possibilities from a programming standpoint - have you experimented  
> with them?
>
> 1) Use code to check for the response from the dialog box - if it  
> is Cancel (or perhaps if it isn't OK, depending on whether you have  
> a default button) and either prevent the palette close or reopen it
>
> 2) Trap an event that tells you it is about to close - looking in  
> the dictionary there is a 'request to close' callback event under  
> Custom Interface with a description that might help.

Both sound like viable options, but there are 2 different things  
happening; clicking the close box, and clicking the Cancel button in  
the warning dialog (which is falling through and telling the entire  
script to cancel, I believe).

If you're using "display dialog" for the warning, you can trap the  
Cancel button like so:

try
	display dialog "bob" buttons {"Cancel"} default button "Cancel"
on error err number num
	if num is -128 then
		say "cancelled"
	else
		--Pass on other errors:
		error err number num
	end if
end try

Or if you're using a "user dialog" for the warning, you'll get the  
clicked button returned from "run dialog modally".

But in the end, installing a "request to close" handler sounds like  
the thing to do for handling the palette's close box.

_________________________________________________________
Steve Mills                              Me: 952-401-6255
Senior Software Architect                         MultiAd
smills at multiad.com                       www.multi-ad.com