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/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
*
* Copyright (C) 2012 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Authors: Michael Terry <michael.terry@canonical.com>
*/
public class SessionPrompt : PromptBox
{
public string session { get; construct; }
public string default_session { get; construct; }
private Gtk.Widget active;
public SessionPrompt (string id, string? session, string? default_session)
{
Object (id: id, session: session, default_session: default_session);
}
construct
{
label = _("Select desktop environment");
if (UnityGreeter.singleton.test_mode)
{
add_session ("gnome", "GNOME");
add_session ("kde", "KDE");
add_session ("ubuntu", "Ubuntu");
}
else
{
foreach (var session in LightDM.get_sessions ())
{
debug ("Adding session %s (%s)", session.key, session.name);
add_session (session.key, session.name);
}
}
var ok = new DashButton (_("OK"));
ok.clicked.connect (() =>
{
if (active != null)
respond ({ active.get_data<string> ("session-list-key") });
else
respond ({ null });
});
attach_item (ok);
/* Only have the OK button be end-aligned. The rest of them are near the top. */
name_label.vexpand = false;
ok.valign = Gtk.Align.END;
ok.vexpand = true;
}
private void add_session (string key, string name_in)
{
var item = new Gtk.Button ();
item.clicked.connect (button_clicked_cb);
UnityGreeter.add_style_class (item);
var hbox = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 6);
var pixbuf = SessionList.get_badge (key);
if (pixbuf != null)
{
var image = new CachedImage (pixbuf);
hbox.pack_start (image, false, false, 0);
}
var name = name_in;
if (key == default_session)
{
/* Translators: %s is a session name like KDE or Ubuntu */
name = _("%s (Default)").printf (name);
}
var label = new Gtk.Label (null);
label.set_markup ("<span font=\"Ubuntu 13\">%s</span>".printf (name));
label.halign = Gtk.Align.START;
hbox.pack_start (label, true, true, 0);
item.hexpand = true;
item.add (hbox);
hbox.show_all ();
try
{
/* Tighten padding on buttons to not be so large */
var style = new Gtk.CssProvider ();
style.load_from_data ("* {padding: 8px;}", -1);
item.get_style_context ().add_provider (style, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
catch (Error e)
{
debug ("Internal error loading session chooser style: %s", e.message);
}
item.set_data<string> ("session-list-key", key);
attach_item (item);
}
private void button_clicked_cb (Gtk.Widget button)
{
foreach_prompt_widget ((w) =>
{
if (w == button)
w.override_background_color (Gtk.StateFlags.NORMAL, { 0.5f, 0.5f, 0.5f, 0.4f });
else
w.override_background_color (Gtk.StateFlags.NORMAL, null);
});
active = button;
}
public override void grab_focus ()
{
var done = false;
Gtk.Widget best = null;
foreach_prompt_widget ((w) =>
{
if (done)
return;
if (best == null)
best = w; /* first button wins, all else considered */
var key = w.get_data<string> ("session-list-key");
if (session == key || (session == null && default_session == key))
{
best = w;
done = true;
}
});
if (best != null)
{
best.grab_focus ();
button_clicked_cb (best);
}
}
}
public class SessionList : GreeterList
{
public signal void session_clicked (string session);
public string session { get; construct; }
public string default_session { get; construct; }
private SessionPrompt prompt;
public SessionList (Background bg, MenuBar mb, string? session, string? default_session)
{
Object (background: bg, menubar: mb, session: session, default_session: default_session);
}
construct
{
prompt = add_session_prompt ("session");
}
private SessionPrompt add_session_prompt (string id)
{
var e = new SessionPrompt (id, session, default_session);
e.respond.connect ((responses) => { session_clicked (responses[0]); });
add_entry (e);
return e;
}
protected override void add_manual_entry () {}
public override void show_authenticated (bool successful = true) {}
private static string? get_badge_name (string session)
{
switch (session)
{
case "ubuntu":
case "ubuntu-2d":
return "ubuntu_badge.png";
case "gnome-classic":
case "gnome-fallback":
case "gnome-shell":
case "gnome":
return "gnome_badge.png";
case "kde":
case "kde-plasma":
return "kde_badge.png";
case "xterm":
return "recovery_console_badge.png";
case "remote-login":
return "unknown_badge.png"; //"remote_login_help.png";
default:
return null;
}
}
private static HashTable<string, Gdk.Pixbuf> badges; /* cache of badges */
public static Gdk.Pixbuf? get_badge (string session)
{
var name = get_badge_name (session);
if (name == null)
{
/* Not a known name, but let's see if we have a custom badge before
giving up entirely and using the unknown badget. */
var maybe_name = "custom_%s_badge.png".printf (session);
var maybe_path = Path.build_filename (Config.PKGDATADIR, maybe_name, null);
if (FileUtils.test (maybe_path, FileTest.EXISTS))
name = maybe_name;
else
name = "unknown_badge.png";
}
if (badges == null)
badges = new HashTable<string, Gdk.Pixbuf> (str_hash, str_equal);
var pixbuf = badges.lookup (name);
if (pixbuf == null)
{
try
{
pixbuf = new Gdk.Pixbuf.from_file (Path.build_filename (Config.PKGDATADIR, name, null));
badges.insert (name, pixbuf);
}
catch (Error e)
{
debug ("Error loading badge %s: %s", name, e.message);
}
}
return pixbuf;
}
}
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