problem with drag-dropping a text string

[Eric Chatonet]

Bonjour Peter,

DragLeave is sent when the mouse pointer moves out of an object  
during a drag and drop: so if you enter a drop zone but don't move  
out from it and re-enter it, dragleave will never be sent.
I don't think it's the right place to put your code in :-)
So, try it in a dragStart handler as I said: DragStart is the only  
message that will be sent once only:
All other messages are sent repeatedly (dragMove) or according to the  
user actions (DragEnter, DragLeave) so dragStart is the best place to  
put your code in and not repeat it without reason.
Send me your test stack off-list if you wish: I'll have a look to  
help you.


Le 12 avr. 08 à 16:17, Peter Brigham a écrit :
> On Apr 11, 2008, Eric Chatonet <eric.chatonet at sosmartsoftware.com>  
> wrote:
>
>> Hi Peter,
>>
>> I just made the experiment by selecting a chunk of text in an
>> unlocked field and setting the dragData["text"] to a different value
>> in a dragStart handler.
>> When dropping it in Rev or in another application the result was the
>> one I expected, i.e. the text I had set by script.
>> Difficult to tell you what you probably miss without having more
>> details ;-)
>
> Thanks for trying it out, Eric. So -- I made a new stack, no  
> scripts at all. Two fields, "f1" and "f2" -- in f1 is the text  
> "something here". The script of f1 consists only of a dragLeave  
> handler:
>
> on dragLeave
>   set the allowableDragActions to "copy"
>   set the dragAction to "copy"
>   -- if I take the above two lines out then text is moved
>   -- instead of copied but still is not modified
>   put the dragData["text"] into dd
>   put " modified" after dd
>   set the dragData["text"] to dd
>   put the dragData["text"] into ddMod
>   -- breakpoint
>   pass dragLeave
> end dragLeave
>
> I select "something here" in f1 and drag to f2. I should get  
> "something here modified" dropped into f2, but I get "something  
> here". With the breakpoint, in the debugger I get dd = ddMod =  
> "something here". Setting the dragData is ignored.
>
> Mac iBook G4, OSX 10.4.1, Studio 2.9 build 610
>
> This is a bug, at least on my system, no? Unless there is something  
> in my settings I've overlooked... I'n not running Galaxy or any  
> other alternative IDE software. I see no similar bugs reported so  
> far in the QCC.
>
> And, BTW, in a *dragstart* handler, (1) setting the dragAction (and/ 
> or allowableDragActions) doesn't work for me, and (2) the dragData  
> property returns empty -- is that normal? Seems odd. In the above  
> dragLeave handler both these things work as expected. If this is  
> abnormal behavior, is it somehow connected with my inability to set  
> the dragData at any point?
>
> ????
>
> Peter M. Brigham
> pmbrig at gmail.com
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