Files
gnome-night-theme-switcher/src/modules/GtkThemer.js
T

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JavaScript

// SPDX-FileCopyrightText: 2020, 2021 Romain Vigier <contact AT romainvigier.fr>
// SPDX-License-Identifier: GPL-3.0-or-later
const { Gio } = imports.gi;
const { extensionUtils } = imports.misc;
const Me = extensionUtils.getCurrentExtension();
const _ = extensionUtils.gettext;
const e = Me.imports.extension;
const utils = Me.imports.utils;
const { Time } = Me.imports.enums.Time;
/**
* The GTK Themer is responsible for changing the GTK theme according to the
* time.
*
* When the user changes its GTK theme (for example via GNOME Tweaks), it will
* try to automatically guess the day and night variants for this theme. It
* will warn the user if it is unable to guess.
*
* In manual mode, it will not attempt to update the variants. The user can
* change the GTK variants in the extension's preferences.
*/
var GtkThemer = class {
constructor() {
this._gtkVariantsSettings = extensionUtils.getSettings(utils.getSettingsSchema('gtk-variants'));
this._interfaceSettings = new Gio.Settings({ schema: 'org.gnome.desktop.interface' });
this._settingsConnections = [];
this._statusConnection = null;
this._timerConnection = null;
}
enable() {
console.debug('Enabling GTK Themer...');
this._watchStatus();
if (this._gtkVariantsSettings.get_boolean('enabled')) {
this._connectSettings();
this._connectTimer();
this._updateSystemGtkTheme();
}
console.debug('GTK Themer enabled.');
}
disable() {
console.debug('Disabling GTK Themer...');
this._disconnectTimer();
this._disconnectSettings();
this._unwatchStatus();
console.debug('GTK Themer disabled.');
}
_watchStatus() {
console.debug('Watching GTK variants status...');
this._statusConnection = this._gtkVariantsSettings.connect('changed::enabled', this._onStatusChanged.bind(this));
}
_unwatchStatus() {
if (this._statusConnection) {
this._gtkVariantsSettings.disconnect(this._statusConnection);
this._statusConnection = null;
}
console.debug('Stopped watching GTK variants status.');
}
_connectSettings() {
console.debug('Connecting GTK Themer to settings...');
this._settingsConnections.push({
settings: this._gtkVariantsSettings,
id: this._gtkVariantsSettings.connect('changed::day', this._onDayVariantChanged.bind(this)),
});
this._settingsConnections.push({
settings: this._gtkVariantsSettings,
id: this._gtkVariantsSettings.connect('changed::night', this._onNightVariantChanged.bind(this)),
});
this._settingsConnections.push({
settings: this._interfaceSettings,
id: this._interfaceSettings.connect('changed::gtk-theme', this._onSystemGtkThemeChanged.bind(this)),
});
}
_disconnectSettings() {
this._settingsConnections.forEach(connection => connection.settings.disconnect(connection.id));
this._settingsConnections = [];
console.debug('Disconnected GTK Themer from settings.');
}
_connectTimer() {
console.debug('Connecting GTK Themer to Timer...');
this._timerConnection = e.timer.connect('time-changed', this._onTimeChanged.bind(this));
}
_disconnectTimer() {
if (this._timerConnection) {
e.timer.disconnect(this._timerConnection);
this._timerConnection = null;
}
console.debug('Disconnected GTK Themer from Timer.');
}
_onStatusChanged() {
console.debug(`GTK variants switching has been ${this._gtkVariantsSettings.get_boolean('enabled') ? 'enabled' : 'disabled'}.`);
this.disable();
this.enable();
}
_onDayVariantChanged() {
console.debug(`Day GTK variant changed to '${this._gtkVariantsSettings.get_string('day')}'.`);
this._updateSystemGtkTheme();
}
_onNightVariantChanged() {
console.debug(`Night GTK variant changed to '${this._gtkVariantsSettings.get_string('night')}'.`);
this._updateSystemGtkTheme();
}
_onSystemGtkThemeChanged() {
console.debug(`System GTK theme changed to '${this._interfaceSettings.get_string('gtk-theme')}'.`);
this._updateCurrentVariant();
}
_onTimeChanged() {
this._updateSystemGtkTheme();
}
_updateCurrentVariant() {
if (e.timer.time === Time.UNKNOWN)
return;
this._gtkVariantsSettings.set_string(e.timer.time, this._interfaceSettings.get_string('gtk-theme'));
}
_updateSystemGtkTheme() {
if (e.timer.time === Time.UNKNOWN)
return;
console.debug(`Setting the ${e.timer.time} GTK variant...`);
this._interfaceSettings.set_string('gtk-theme', this._gtkVariantsSettings.get_string(e.timer.time));
}
};