Re: Extension/Preferences shared variables

[Tim <darkxst fastmail fm>]

That can't work, since prefs runs in a separate process to gnome-shell. You will need to use dbus to communicate.

On 11/04/13 15:41, Vadim wrote:

Yes, I know about GSettings and use them a lot to store static options. Thanks a lot in any case.

Here I wanted to store a reference to a gtkWidget that is created in the preferences dialog.

The way I wanted to do is: gtkWidget is created in pref.js, a global variable is used to reference the widget, and the extension knows that the widget is created and directs some output there.

One way I was thinking about before was to direct output to a GSettings key and react on this change in prefs.js, but that is not efficient. Another way was to direct output to a file, and read the file in prefs.js. I do not like either solution.

For me the best deal would be to share some variable space between both extension and prefs.js, but as far as I know they are in different processes.

Any other ideas?

Thanks again,
Vadim.

On 04/10/2013 06:55 PM, Amy wrote:

Hi Vadim,

Could you just use gsettings (i.e. the same thing that you use with `prefs.js` to store extension settings) for this?

In the `prefs.js` your widget does a:

    let settings = Convenience.getSettings();

    settings.set_int('my-setting-name', 1);

and in the extension you connect to the change:

    // in your init() say

    let settings = Convenience.getSettings();

    // in your enable() say

    settings.connect('changed::my-setting-name', callback)

So `callback` is called whenever a user changes the setting in the prefs widget.

(Here Convenience.getSettings is the one from the official gnome shell extensions - https://git.gnome.org/browse/gnome-shell-extensions/tree/lib/convenience.js)

On 11 April 2013 08:38, Vadim <vadim dbfin com> wrote:

Hi everyone,

I was wondering if there is a common way to share a variable between an
extension and the preferences dialog.

Let say, I want to set some "global".variable within the preferences
dialog (temporary until it is closed), and the running extension should
react on this, i.e. it should see that the variable was set.

Thanks in advance,
Vadim

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