interfaces.js

// This file is part of the AppIndicator/KStatusNotifierItem GNOME Shell extension
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

/* exported StatusNotifierItem, StatusNotifierWatcher, DBusMenu */

var StatusNotifierItem = loadInterfaceXml('StatusNotifierItem.xml');
var StatusNotifierWatcher = loadInterfaceXml('StatusNotifierWatcher.xml');
var DBusMenu = loadInterfaceXml('DBusMenu.xml');

// loads a xml file into an in-memory string
function loadInterfaceXml(filename) {
    const extension = imports.misc.extensionUtils.getCurrentExtension();
    const interfacesDir = extension.dir.get_child('interfaces-xml');
    const file = interfacesDir.get_child(filename);
    let [result, contents] = imports.gi.GLib.file_get_contents(file.get_path());

    if (result) {
        // HACK: The "" + trick is important as hell because file_get_contents returns
        // an object (WTF?) but Gio.makeProxyWrapper requires `typeof() === "string"`
        // Otherwise, it will try to check `instanceof XML` and fail miserably because there
        // is no `XML` on very recent SpiderMonkey releases (or, if SpiderMonkey is old enough,
        // will spit out a TypeError soon).
        if (contents instanceof Uint8Array)
            contents = imports.byteArray.toString(contents);
        return `<node>${contents}</node>`;
    } else {
        throw new Error(`AppIndicatorSupport: Could not load file: ${filename}`);
    }
}