Re: Editable SpinButton on a TreeView: detect *every* changes

[Tristan Van Berkom <tristan vanberkom codethink co uk>]

Hi,

On Tue, 2016-11-15 at 02:09 +0100, pozzugno wrote:
[...]
> I have tried to catch "editing_started", "editing_canceled" and
> "edited" 
> signals of CellRenderer. In "editing_started" callback, I retrieve
> and 
> save the row and column of the cell the user is going to edit. I
> also 
> connect a callback to "value_changed" signal of the GtkAdjustment 
> associated to the GtkCellRendererSpin. Moreover I save the starting 
> value so I can restore it if the user will cancel the editing.
>
> When the user clicks on +/- buttons, "value_changed" is called (so I
> can 
> send the request to the remote device).
>
> With some tricks, I'm able to restore the original value if the user 
> cancels the editing and to avoid a duplicate request to the remote 
> device when the user confirm the value changed by +/- buttons
> (actually 
> when the user moves the focus away from the spinbutton, thus
> terminated 
> the editing).
>
> As you know, I'm very new to Gtk programming, so I'm wondering
> wethere 
> there's a better approach.

Without reading your python code, your approach sounds correct.

If you want to get notifications (callbacks) for live editing of
editable widgets, you need to handle the editing started signal and
then handle signals on the editable widget which is created for that
edit session.

Cheers,
    -Tristan