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js: Use (dis)connectObject()

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Start using the new methods to simplify signal cleanup. For now,
focus on replacing existing cleanups; in most cases this means
signals connected in the constructor and disconnected on destroy,
but also other cases with a similarly defined lifetime (say: from
show to hide).

This doesn't change signal connections that only exist for a short
time (say: once), handlers that are connected on-demand (say: the
first time a particular method is called), or connections that
aren't tracked (read: disconnected) at all.

We will eventually replace the latter with connectObject() as
well - especially from actor subclasses - but the changeset is
already big enough as-is :-)

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1953>
This commit is contained in:
Florian Müllner
2021-08-16 00:36:59 +02:00
committed by Marge Bot
parent f45ccc9143
commit 26235bbe54
54 changed files with 753 additions and 1674 deletions
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9
js/ui/animation.js
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@ -22,11 +22,11 @@ class Animation extends St.Bin {
this.connect('resource-scale-changed',
this._loadFile.bind(this, file, width, height));
this._scaleChangedId = themeContext.connect('notify::scale-factor',
themeContext.connectObject('notify::scale-factor',
() => {
this._loadFile(file, width, height);
this.set_size(width * themeContext.scale_factor, height * themeContext.scale_factor);
});
}, this);
this._speed = speed;
@ -122,11 +122,6 @@ class Animation extends St.Bin {
_onDestroy() {
this.stop();
let themeContext = St.ThemeContext.get_for_stage(global.stage);
if (this._scaleChangedId)
themeContext.disconnect(this._scaleChangedId);
this._scaleChangedId = 0;
}
});