Get panel list and hidding them via C++ module

[Sebastian Kügler]

Hi Evgeniy,

On Monday, February 09, 2015 15:43:05 Evgeniy Alekseev wrote:
> Recently I have run into the following problem: how to get panel list (even 
> w\o additional filtering) and hidding them from an applet?
> 
> With KDE4 I have used the following method:
> 1. From plasmoid I have called containment()->corona() to get pointer to 
> corona object.
> 2. Then I have used iteration on containments in the current corona() with 
> filter by ContainmentType.
> 3. And set found containments hidding by calling Containment->view()-
> >setVisible(false).

That's a hack, even in a Plasma 4 world. :)

> With Plasma 5 I have found the following problems:
> 
> 1. Unfortunately in the default way (i.e. if C++ module inherits from
> Qobject)  I didn't find ability to get pointer to current corona. Is it
> possible to get it at the moment?

Not possible, the QtQuick code's access to the C++ bits (Applet, Containment 
is now very limited by design).

> 2. Current containments have not view() method and seems have not method to 
> set them hidding. Is there such ability in the current version?

No, the separation between model (Plasma::Applet, Plasma::Containment, etc.) 
and the views (implemented in QtQuick) is deeper in Plasma 5, that's partly a 
conscious design decision, and partly mandated by moving everything to 
QtQuick.

> Also I have looked at QML bindings, but didn't find any ability to
> implement  such functional too.

That's not possible in Plasma 5, and it's a conscious design decision. Applets 
are not supposed to meddle with other applets, they're self-contained 
outbound, and managed by the surrounding containment. If applets started 
screwing around with each other, the situation would quickly become 
unmanageable.

Let's take a step back, though. What do you actually want to achieve? Maybe 
there is a way to make that possible within the design of Plasma.

Have you looked at desktop scripting to achieve what you are looking for?

Cheers,
-- 
sebas

http://www.kde.org | http://vizZzion.org | GPG Key ID: 9119 0EF9