gnome-shell/js/gdm/powerMenu.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/*
* Copyright 2011 Red Hat, Inc
*
* 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, 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
const Lang = imports.lang;
const UPowerGlib = imports.gi.UPowerGlib;
const LoginManager = imports.misc.loginManager;
const PanelMenu = imports.ui.panelMenu;
const PopupMenu = imports.ui.popupMenu;
const PowerMenuButton = new Lang.Class({
Name: 'PowerMenuButton',
Extends: PanelMenu.SystemStatusButton,
_init: function() {
/* Translators: accessible name of the power menu in the login screen */
this.parent('system-shutdown-symbolic', _("Power"));
this._upClient = new UPowerGlib.Client();
this._loginManager = LoginManager.getLoginManager();
this._createSubMenu();
this._upClient.connect('notify::can-suspend',
Lang.bind(this, this._updateHaveSuspend));
this._updateHaveSuspend();
// ConsoleKit doesn't send notifications when shutdown/reboot
// are disabled, so we update the menu item each time the menu opens
this.menu.connect('open-state-changed', Lang.bind(this,
function(menu, open) {
if (open) {
this._updateHaveShutdown();
this._updateHaveRestart();
}
}));
this._updateHaveShutdown();
this._updateHaveRestart();
},
_updateVisibility: function() {
let shouldBeVisible = (this._haveSuspend || this._haveShutdown || this._haveRestart);
this.actor.visible = shouldBeVisible;
},
_updateHaveShutdown: function() {
this._loginManager.canPowerOff(Lang.bind(this, function(result) {
this._haveShutdown = result;
this._powerOffItem.actor.visible = this._haveShutdown;
this._updateVisibility();
}));
},
_updateHaveRestart: function() {
this._loginManager.canReboot(Lang.bind(this, function(result) {
this._haveRestart = result;
this._restartItem.actor.visible = this._haveRestart;
this._updateVisibility();
}));
},
_updateHaveSuspend: function() {
this._haveSuspend = this._upClient.get_can_suspend();
this._suspendItem.actor.visible = this._haveSuspend;
this._updateVisibility();
},
_createSubMenu: function() {
let item;
item = new PopupMenu.PopupMenuItem(_("Suspend"));
item.connect('activate', Lang.bind(this, this._onActivateSuspend));
this.menu.addMenuItem(item);
this._suspendItem = item;
item = new PopupMenu.PopupMenuItem(_("Restart"));
item.connect('activate', Lang.bind(this, this._onActivateRestart));
this.menu.addMenuItem(item);
this._restartItem = item;
item = new PopupMenu.PopupMenuItem(_("Power Off"));
item.connect('activate', Lang.bind(this, this._onActivatePowerOff));
this.menu.addMenuItem(item);
this._powerOffItem = item;
},
_onActivateSuspend: function() {
if (this._haveSuspend)
this._upClient.suspend_sync(null);
},
_onActivateRestart: function() {
if (!this._haveRestart)
return;
this._loginManager.reboot();
},
_onActivatePowerOff: function() {
if (!this._haveShutdown)
return;
this._loginManager.powerOff();
}
});