Getting drag and drop to copy (not cut) dragged text

[Dave Cragg]

At 6:57 pm +0000 25/10/03, depstein at att.net wrote:

>I am trying to override this behavior when text is dropped to a locked field,
>i.e., I want the dragged text to be displayed in 
>the locked field but remain, still selected,
>where it was in the original field.  The following procedure does not work:
>
>In the card script:
>
>on dragStart
>   global textBuffer,locBuffer,chunkBuffer
>-- these globals are used to record the starting 
>condition of the field being dragged from:
>   put the text of the target into textBuffer
>   put the selectedChunk into chunkBuffer
>   put the long name of the target into locBuffer
>   pass dragStart
>end dragStart
>
>In the script of a locked field:
>
>on dragEnter
>   set the acceptDrop to true
>end dragEnter
>
>on dragDrop
>   global textBuffer,locBuffer,chunkBuffer
>   put the dragData["text"] into me  -- This works as expected.
>   -- Now try to restore the pre-drag content and 
>selection of the source field:
>   do "put textBuffer into" && locBuffer
>   do "select" && chunkBuffer
>-- But this doesn't happen.  The source field 
>has lost the text that was dragged out.
>end dragDrop
>
>Can anyone explain what's going wrong and how to fix this?

This seems to work:

In your card script:

on dragStart
   set the dragData["text"] to the selection
   ## don't pass this message
end dragStart

on dragEnd
## need to trap this to stop automatic behavior
end dragEnd

In the locked field:

on dragEnter
   set the acceptDrop to true
end dragEnter

on dragDrop
   put the dragData["text"] into me 
end dragDrop

It seems you don't need to reselect the original 
selection. However, I guess that might depend on 
what you were doing in the dragDrop handler. But 
I think the dragEnd handler would be the place to 
do that.

Cheers
Dave