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js: Promisify async operations

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Promises make asynchronous operations easier to manage, in particular
when used through the async/await syntax that allows for asynchronous
code to closely resemble synchronous one.

gjs has included a Gio._promisify() helper for a while now, which
monkey-patches methods that follow GIO's async pattern to return a
Promise when called without a callback argument.

Use that to get rid of all those GAsyncReadyCallbacks!

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1126
This commit is contained in:
Florian Müllner
2019-12-19 20:50:37 +01:00
committed by Florian Müllner
parent 18742fcc32
commit 764527c8c9
20 changed files with 409 additions and 428 deletions
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13
js/ui/environment.js
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@ -10,10 +10,21 @@ imports.gi.versions.Gtk = '3.0';
imports.gi.versions.TelepathyGLib = '0.12';
imports.gi.versions.TelepathyLogger = '0.2';
const { Clutter, Gio, GLib, GObject, Meta, Shell, St } = imports.gi;
const { Clutter, Gio, GLib, GObject, Meta, Polkit, Shell, St } = imports.gi;
const Gettext = imports.gettext;
const System = imports.system;
Gio._promisify(Gio.DataInputStream.prototype, 'fill_async', 'fill_finish');
Gio._promisify(Gio.DataInputStream.prototype,
'read_line_async', 'read_line_finish');
Gio._promisify(Gio.DBus, 'get', 'get_finish');
Gio._promisify(Gio.DBusConnection.prototype, 'call', 'call_finish');
Gio._promisify(Gio.DBusProxy, 'new', 'new_finish');
Gio._promisify(Gio.DBusProxy.prototype, 'init_async', 'init_finish');
Gio._promisify(Gio.DBusProxy.prototype,
'call_with_unix_fd_list', 'call_with_unix_fd_list_finish');
Gio._promisify(Polkit.Permission, 'new', 'new_finish');
let _localTimeZone = null;
// We can't import shell JS modules yet, because they may have