[pygtk] gtk.ComboBoxEntry and "changed" event on keystrokes.

[Neil Dugan]

Osmo Maatta wrote:
> Hello,
> 
> I have a small application that has a search-field (gtk.ComboBoxEntry) 
> and a button to start a search job.
> 
> The application will start a new search if user:
> 1) Selects an item from the gtk.ComboBoxEntry's drop-down list.
>     This is handled by gtk.ComboBoxEntry's "changed" event. This is Ok.
> 
> 2  Types a search query (some text) and presses the [Start search] button.
>     This is handled by the button's "clicked" event. This is Ok.
> 
> 3) Presses the [Enter]-key.
>     This is handled by the combo's "activate" event attached to the 
> gtk.Entry. This is Ok.
> 
> Because a search-job can take quite a long time, I do not want to 
> activate search for each keystroke, when user types text in the search 
> field.  And this is my problem. Key-strokes activate the "changed" event 
> on the gtk.ComboBoxEntry field. I cannot distinguish between the 
> drop-down list's "changed" event (which I want) and the "changed" event 
> when user types text (I try to avoid this event).
> 
> User is welcome to type in some text/query and press the [Start search] 
> button. This is OK.
> 
> So how to avoid "changed" event on each keystroke?
> 
> A simplified but complete example: http://www.futuredesktop.com/tmp/w4.py
> 
> Happy Easter,
>   Moma Antero
>   Grønland
> 
> 
> 

I couldn't find a direct way of handling the problem..

But how about a timeout that only occurs after the user stops typing 
for a while (e.g. 1/2 a second).  It stops the search being triggered 
for every keystroke.




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