Allow the shell to run without the screenshield

The screenshield requires gdm 3.5, which can be problematic in
jhbuild configurations, or distributions that don't use GDM as the display
manager. Allow transparent fallback to gnome-screensaver in that case.

https://bugzilla.gnome.org/show_bug.cgi?id=683060
This commit is contained in:
Giovanni Campagna 2012-07-08 17:42:15 +02:00
parent 6ef3c628e6
commit de93677271
5 changed files with 105 additions and 14 deletions

View File

@ -137,8 +137,10 @@ function start() {
ctrlAltTabManager = new CtrlAltTab.CtrlAltTabManager();
overview = new Overview.Overview();
magnifier = new Magnifier.Magnifier();
screenShield = new ScreenShield.ScreenShield();
screenSaverDBus = new ShellDBus.ScreenSaverDBus();
if (UnlockDialog.isSupported())
screenShield = new ScreenShield.ScreenShield();
else
screenShield = new ScreenShield.ScreenShieldFallback();
panel = new Panel.Panel();
wm = new WindowManager.WindowManager();
messageTray = new MessageTray.MessageTray();

View File

@ -19,6 +19,7 @@ const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const MessageTray = imports.ui.messageTray;
const ShellDBus = imports.ui.shellDBus;
const Tweener = imports.ui.tweener;
const SCREENSAVER_SCHEMA = 'org.gnome.desktop.screensaver';
@ -415,6 +416,8 @@ const ScreenShield = new Lang.Class({
this._onStatusChanged(status);
}));
this._screenSaverDBus = new ShellDBus.ScreenSaverDBus(this);
this._loginManager = LoginManager.getLoginManager();
this._loginSession = this._loginManager.getCurrentSessionProxy();
this._loginSession.connectSignal('Lock', Lang.bind(this, function() { this.lock(false); }));
@ -827,3 +830,60 @@ const ScreenShield = new Lang.Class({
},
});
Signals.addSignalMethods(ScreenShield.prototype);
/* Fallback code to handle session locking using gnome-screensaver,
in case the required GDM dependency is not there
*/
const ScreenShieldFallback = new Lang.Class({
Name: 'ScreenShieldFallback',
_init: function() {
this._proxy = new Gio.DBusProxy({ g_connection: Gio.DBus.session,
g_name: 'org.gnome.ScreenSaver',
g_object_path: '/org/gnome/ScreenSaver',
g_interface_name: 'org.gnome.ScreenSaver',
g_flags: (Gio.DBusProxyFlags.DO_NOT_AUTO_START |
Gio.DBusProxyFlags.DO_NOT_LOAD_PROPERTIES),
});
this._proxy.init(null);
this._proxy.connect('g-signal', Lang.bind(this, this._onSignal));
this._proxy.connect('notify::g-name-owner', Lang.bind(this, this._onNameOwnerChanged));
},
_onNameOwnerChanged: function(object, pspec) {
if (this._proxy.g_name_owner)
[this._locked] = this._proxy.call_sync('GetActive', null,
Gio.DBusCallFlags.NONE, -1, null).deep_unpack();
else
this._locked = false;
this.emit('lock-status-changed', this._locked);
},
_onSignal: function(proxy, senderName, signalName, params) {
if (signalName == 'ActiveChanged') {
[this._locked] = params.deep_unpack();
this.emit('lock-status-changed', this._locked);
}
},
get locked() {
return this._locked;
},
lock: function() {
this._proxy.call('Lock', null, Gio.DBusCallFlags.NONE, -1, null,
Lang.bind(this, function(proxy, result) {
proxy.call_finish(result);
this.emit('lock-screen-shown');
}));
},
unlock: function() {
this._proxy.call('SetActive', GLib.Variant.new('(b)', false),
Gio.DBusCallFlags.NONE, -1, null, null);
},
});
Signals.addSignalMethods(ScreenShieldFallback.prototype);

View File

@ -340,35 +340,38 @@ const GnomeShellExtensions = new Lang.Class({
const ScreenSaverDBus = new Lang.Class({
Name: 'ScreenSaverDBus',
_init: function() {
_init: function(screenShield) {
this.parent();
Main.screenShield.connect('lock-status-changed', Lang.bind(this, function(shield) {
this._screenShield = screenShield;
screenShield.connect('lock-status-changed', Lang.bind(this, function(shield) {
this._dbusImpl.emit_signal('ActiveChanged', GLib.Variant.new('(b)', [shield.locked]));
}));
this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(ScreenSaverIface, this);
this._dbusImpl.export(Gio.DBus.session, '/org/gnome/ScreenSaver');
Gio.DBus.session.own_name('org.gnome.ScreenSaver', Gio.BusNameOwnerFlags.REPLACE, null, null);
},
LockAsync: function(parameters, invocation) {
let tmpId = Main.screenShield.connect('lock-screen-shown', Lang.bind(this, function() {
Main.screenShield.disconnect(tmpId);
let tmpId = this._screenShield.connect('lock-screen-shown', Lang.bind(this, function() {
this._screenShield.disconnect(tmpId);
invocation.return_value(null);
}));
Main.screenShield.lock(true);
this._screenShield.lock(true);
},
SetActive: function(active) {
if (active)
Main.screenShield.lock(true);
this._screenShield.lock(true);
else
Main.screenShield.unlock();
this._screenShield.unlock();
},
GetActive: function() {
return Main.screenShield.locked;
return this._screenShield.locked;
}
});

View File

@ -2,7 +2,7 @@
const AccountsService = imports.gi.AccountsService;
const Clutter = imports.gi.Clutter;
const Gdm = imports.gi.Gdm;
const Gdm = imports.gi.Gdm;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
@ -23,6 +23,35 @@ const GdmUtil = imports.gdm.util;
// The timeout before going back automatically to the lock screen (in seconds)
const IDLE_TIMEOUT = 2 * 60;
function versionCompare(required, reference) {
required = required.split('.');
reference = reference.split('.');
for (let i = 0; i < required.length; i++) {
if (required[i] != reference[i])
return required[i] < reference[i];
}
return true;
}
function isSupported() {
try {
let params = GLib.Variant.new('(ss)', ['org.gnome.DisplayManager.Manager', 'Version']);
let result = Gio.DBus.system.call_sync('org.gnome.DisplayManager',
'/org/gnome/DisplayManager/Manager',
'org.freedesktop.DBus.Properties',
'Get', params, null,
Gio.DBusCallFlags.NONE,
-1, null);
let version = result.deep_unpack()[0].deep_unpack();
return versionCompare('3.5.91', version);
} catch(e) {
return false;
}
}
// A widget showing the user avatar and name
const UserWidget = new Lang.Class({
Name: 'UserWidget',

View File

@ -34,7 +34,6 @@ extern GType gnome_shell_plugin_get_type (void);
#define SHELL_DBUS_SERVICE "org.gnome.Shell"
#define MAGNIFIER_DBUS_SERVICE "org.gnome.Magnifier"
#define SCREENSAVER_DBUS_SERVICE "org.gnome.ScreenSaver"
#define OVERRIDES_SCHEMA "org.gnome.shell.overrides"
@ -153,8 +152,6 @@ shell_dbus_init (gboolean replace)
MAGNIFIER_DBUS_SERVICE, FALSE,
/* ...and the org.freedesktop.Notifications service. */
"org.freedesktop.Notifications", FALSE,
/* ...and the org.gnome.ScreenSaver service. */
SCREENSAVER_DBUS_SERVICE, FALSE,
NULL);
/* ...and the on-screen keyboard service */
shell_dbus_acquire_name (bus,