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utils.js
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utils.js
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const Gettext = imports.gettext;
const Gio = imports.gi.Gio;
const Config = imports.misc.config;
const ExtensionUtils = imports.misc.extensionUtils;
var SignalsHandlerFlags = {
NONE: 0,
CONNECT_AFTER: 1
};
function getSettings() {
let extension = ExtensionUtils.getCurrentExtension();
let schema = 'org.gnome.shell.extensions.apt-update-indicator';
const GioSSS = Gio.SettingsSchemaSource;
// check if this extension was built with "make zip-file", and thus
// has the schema files in a subfolder
// otherwise assume that extension has been installed in the
// same prefix as gnome-shell (and therefore schemas are available
// in the standard folders)
let schemaDir = extension.dir.get_child('schemas');
let schemaSource;
if (schemaDir.query_exists(null)) {
schemaSource = GioSSS.new_from_directory(schemaDir.get_path(),
GioSSS.get_default(),
false);
} else {
schemaSource = GioSSS.get_default();
}
let schemaObj = schemaSource.lookup(schema, true);
if (!schemaObj) {
throw new Error('Schema ' + schema + ' could not be found for extension ' +
extension.metadata.uuid + '. Please check your installation.');
}
return new Gio.Settings({settings_schema: schemaObj});
}
/**
* initTranslations:
* @domain: (optional): the gettext domain to use
*
* Initialize Gettext to load translations from extensionsdir/locale.
* If @domain is not provided, it will be taken from metadata['gettext-domain']
*/
function initTranslations(domain) {
let extension = ExtensionUtils.getCurrentExtension();
domain = domain || extension.metadata['gettext-domain'];
// check if this extension was built with "make zip-file", and thus
// has the locale files in a subfolder
// otherwise assume that extension has been installed in the
// same prefix as gnome-shell
let localeDir = extension.dir.get_child('locale');
if (localeDir.query_exists(null))
Gettext.bindtextdomain(domain, localeDir.get_path());
else
Gettext.bindtextdomain(domain, Config.LOCALEDIR);
}
/**
* Simplify global signals and function injections handling
* abstract class
*/
const BasicHandler = class DashToDock_BasicHandler {
constructor() {
this._storage = new Object();
}
add(/* unlimited 3-long array arguments */) {
// Convert arguments object to array, concatenate with generic
// Call addWithLabel with ags as if they were passed arguments
this.addWithLabel('generic', ...arguments);
}
destroy() {
for( let label in this._storage )
this.removeWithLabel(label);
}
addWithLabel(label /* plus unlimited 3-long array arguments*/) {
if (this._storage[label] == undefined)
this._storage[label] = new Array();
// Skip first element of the arguments
for (let i = 1; i < arguments.length; i++) {
let item = this._storage[label];
try {
item.push(this._create(arguments[i]));
} catch (e) {
logError(e);
}
}
}
removeWithLabel(label) {
if (this._storage[label]) {
for (let i = 0; i < this._storage[label].length; i++)
this._remove(this._storage[label][i]);
delete this._storage[label];
}
}
// Virtual methods to be implemented by subclass
/**
* Create single element to be stored in the storage structure
*/
_create(item) {
throw new GObject.NotImplementedError(`_create in ${this.constructor.name}`);
}
/**
* Correctly delete single element
*/
_remove(item) {
throw new GObject.NotImplementedError(`_remove in ${this.constructor.name}`);
}
};
/**
* Manage global signals
*/
var GlobalSignalsHandler = class DashToDock_GlobalSignalHandler extends BasicHandler {
_create(item) {
let object = item[0];
let event = item[1];
let callback = item[2]
let flags = item.length > 3 ? item[3] : SignalsHandlerFlags.NONE;
if (!object)
throw new Error('Impossible to connect to an invalid object');
let after = flags == SignalsHandlerFlags.CONNECT_AFTER;
let connector = after ? object.connect_after : object.connect;
if (!connector) {
throw new Error(`Requested to connect to signal '${event}', ` +
`but no implementation for 'connect${after ? '_after' : ''}' `+
`found in ${object.constructor.name}`);
}
let id = connector.call(object, event, callback);
return [object, id];
}
_remove(item) {
item[0].disconnect(item[1]);
}
};