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Adopt EventEmitter class instead of injecting Signal methods

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Introduce a new class, EventEmitter, which implements signal
handling for pure JavaScript classes. EventEmitter still
utilizes GJS' addSignalMethods internally.

EventEmitter allows static typechecking to understand the
structure of event-emitting JS classes and makes creating
child classes simpler.

The name 'EventEmitter' mirrors a common name for this pattern
in Node and in JS libraries.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2043>
This commit is contained in:
Evan Welsh
2022-07-04 18:30:44 -04:00
parent 9e30afe678
commit a88e59c1a8
39 changed files with 204 additions and 169 deletions
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25
js/ui/status/rfkill.js
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@ -2,7 +2,7 @@
/* exported Indicator */
const { Gio, GObject } = imports.gi;
const Signals = imports.signals;
const Signals = imports.misc.signals;
const Main = imports.ui.main;
const PanelMenu = imports.ui.panelMenu;
@ -16,18 +16,20 @@ const OBJECT_PATH = '/org/gnome/SettingsDaemon/Rfkill';
const RfkillManagerInterface = loadInterfaceXML('org.gnome.SettingsDaemon.Rfkill');
const RfkillManagerProxy = Gio.DBusProxy.makeProxyWrapper(RfkillManagerInterface);
var RfkillManager = class {
var RfkillManager = class extends Signals.EventEmitter {
constructor() {
super();
this._proxy = new RfkillManagerProxy(Gio.DBus.session, BUS_NAME, OBJECT_PATH,
(proxy, error) => {
if (error) {
log(error.message);
return;
}
this._proxy.connect('g-properties-changed',
this._changed.bind(this));
this._changed();
});
(proxy, error) => {
if (error) {
log(error.message);
return;
}
this._proxy.connect('g-properties-changed',
this._changed.bind(this));
this._changed();
});
}
get airplaneMode() {
@ -50,7 +52,6 @@ var RfkillManager = class {
this.emit('airplane-mode-changed');
}
};
Signals.addSignalMethods(RfkillManager.prototype);
var _manager;
function getRfkillManager() {