Unity 8
 All Classes Functions
DBusGreeterList.cpp
1 /*
2  * Copyright (C) 2013 Canonical, Ltd.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 3.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  */
16 
17 #include "DBusGreeterList.h"
18 #include "Greeter.h"
19 
20 #include <QDBusMessage>
21 #include <QStringList>
22 
23 DBusGreeterList::DBusGreeterList(Greeter *greeter, const QDBusConnection &connection, const QString &path)
24  : QObject(greeter),
25  m_greeter(greeter),
26  m_connection(connection),
27  m_path(path)
28 {
29  connect(m_greeter, SIGNAL(authenticationUserChanged(const QString &)), this, SLOT(authenticationUserChangedHandler(const QString &)));
30  connect(m_greeter, SIGNAL(promptlessChanged()), this, SLOT(promptlessChangedHandler()));
31 }
32 
33 QString DBusGreeterList::GetActiveEntry() const
34 {
35  return m_greeter->authenticationUser();
36 }
37 
38 void DBusGreeterList::SetActiveEntry(const QString &entry)
39 {
40  Q_EMIT m_greeter->requestAuthenticationUser(entry);
41 }
42 
43 bool DBusGreeterList::entryIsLocked() const
44 {
45  return !m_greeter->promptless();
46 }
47 
48 void DBusGreeterList::authenticationUserChangedHandler(const QString &user)
49 {
50  notifyPropertyChanged("ActiveEntry", user);
51  Q_EMIT EntrySelected(user);
52 }
53 
54 void DBusGreeterList::promptlessChangedHandler()
55 {
56  notifyPropertyChanged("EntryIsLocked", entryIsLocked());
57  Q_EMIT entryIsLockedChanged();
58 }
59 
60 // Manually emit a PropertiesChanged signal over DBus, because QtDBus
61 // doesn't do it for us on Q_PROPERTIES, oddly enough.
62 void DBusGreeterList::notifyPropertyChanged(const QString& propertyName, const QVariant &value)
63 {
64  QDBusMessage message;
65  QVariantMap changedProps;
66 
67  changedProps.insert(propertyName, value);
68 
69  message = QDBusMessage::createSignal(m_path,
70  "org.freedesktop.DBus.Properties",
71  "PropertiesChanged");
72  message << "com.canonical.UnityGreeter.List";
73  message << changedProps;
74  message << QStringList();
75 
76  m_connection.send(message);
77 }