On Fri, Mar 19, 2010 at 1:19 PM, Sebastian Kügler <se...@kde.org> wrote: > There are two cases for dataUpdated that matter here, indeed: > (1) polling / timer-based, for example refreshing RSS feeds > (2) events, for example from Solid > > We want to delay (1) and just keep (2) from propagation until shown. The > thing is > that the dataEngine then would need to know about the Applet's status (is it > shown so > should I update?).
My case falls under #2, but as I said, stopping propagation isn't sufficient because the work that the data engine has to do to produce the data is expensive and so I want to avoid it if the data won't be seen by anybody. I think you can address both cases, though, by having the applet disconnect from sources when it's not displayed and reconnect when it is displayed. Or alternatively, give developers the tools (i.e. an isDisplayed or similar method) so they can implement that strategy themselves if they want to. The heuristics of figuring out whether the applet is visible or not is the only hard part. _______________________________________________ Plasma-devel mailing list Plasma-devel@kde.org https://mail.kde.org/mailman/listinfo/plasma-devel
