[neon/backports-jammy/packagekit-qt/Neon/unstable] /: Imported Upstream version 0.8.8

Matthias Klumpp null at kde.org
Wed Mar 15 04:29:31 GMT 2023


Git commit de36601d154d609443187f8cd31239afeabd4c5e by Matthias Klumpp.
Committed on 04/06/2013 at 12:47.
Pushed by carlosdem into branch 'Neon/unstable'.

Imported Upstream version 0.8.8

M  +2    -2    CMakeLists.txt
M  +497  -160  COPYING
M  +19   -0    NEWS
M  +6    -6    RELEASE
M  +81   -11   src/daemon.cpp
M  +23   -0    src/daemon.h
M  +2    -0    src/daemonprivate.h
M  +145  -82   src/transaction.cpp
M  +217  -60   src/transaction.h
M  +5    -10   src/transactionprivate.cpp
M  +8    -4    src/transactionprivate.h

https://invent.kde.org/neon/backports-jammy/packagekit-qt/commit/de36601d154d609443187f8cd31239afeabd4c5e

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 04a617d..7a0713c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,11 +8,11 @@ set(CMAKE_BUILD_TYPE "Debug")
 
 set(QPACKAGEKIT_VERSION_MAJOR  "0")
 set(QPACKAGEKIT_VERSION_MINOR  "8")
-set(QPACKAGEKIT_VERSION_PATCH  "7")
+set(QPACKAGEKIT_VERSION_PATCH  "8")
 set(QPACKAGEKIT_VERSION_SUFFIX "${VERSION_SUFFIX}")
 set(QPACKAGEKIT_VERSION "${QPACKAGEKIT_VERSION_MAJOR}.${QPACKAGEKIT_VERSION_MINOR}.${QPACKAGEKIT_VERSION_PATCH}")
 
-set(QPACKAGEKIT_API_LEVEL "5")
+set(QPACKAGEKIT_API_LEVEL "6")
 
 # Forbid in-tree building
 if(${CMAKE_SOURCE_DIR} MATCHES ${CMAKE_BINARY_DIR})
diff --git a/COPYING b/COPYING
index 65c5ca8..4362b49 100644
--- a/COPYING
+++ b/COPYING
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+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  12. If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Library under this License may add
+an explicit geographical distribution limitation excluding those countries,
+so that distribution is permitted only in or among countries not thus
+excluded.  In such case, this License incorporates the limitation as if
+written in the body of this License.
+
+  13. The Free Software Foundation may publish revised and/or new
+versions of the Lesser General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Library
+specifies a version number of this License which applies to it and
+"any later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+  14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission.  For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this.  Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+                            NO WARRANTY
+
+  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+           How to Apply These Terms to Your New Libraries
+
+  If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
+everyone can redistribute and change.  You can do so by permitting
+redistribution under these terms (or, alternatively, under the terms of the
+ordinary General Public License).
+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
diff --git a/NEWS b/NEWS
index 6456ccc..76e3875 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,22 @@
+Version 0.8.8
+~~~~~~~~~~~~~
+Released: 2013-05-09
+
+New Features:
+ - Adding Provides property to Daemon (Daniel Nicoletti)
+ - Adding some Meta information (Daniel Nicoletti)
+ - Adds the transactionFlags to the Transaction class (Daniel Nicoletti)
+ - Add TransactionFlags registration (Daniel Nicoletti)
+ - Implement connectNotify and disconnectNotify (Daniel Nicoletti)
+
+Bugfixes:
+ - Add missing declare enums (Daniel Nicoletti)
+ - Fix searchGroups() be iterating over the flaged values (Daniel Nicoletti)
+ - Ignore Interface isValid() check (Daniel Nicoletti)
+ - Improve error handling and make it easier for QML use it (Daniel Nicoletti)
+ - Make sure we set an error if we fail to contact PackageKit (Daniel Nicoletti)
+ - Use the correct version of the LGPL library (Richard Hughes)
+
 Version 0.8.7
 ~~~~~~~~~~~~~
 Released: 2012-01-17
diff --git a/RELEASE b/RELEASE
index 8b46229..5d2c6a2 100644
--- a/RELEASE
+++ b/RELEASE
@@ -2,10 +2,10 @@ PackageKit-Qt Release Notes
 
 1. Write NEWS entries for PackageKit-Qt in the same format as usual.
 
-git shortlog QPACKAGEKIT_0_8_6.. | grep -i -v trivial | grep -v Merge > NEWS.new
+git shortlog QPACKAGEKIT_0_8_7.. | grep -i -v trivial | grep -v Merge > NEWS.new
 
 --------------------------------------------------------------------------------
-Version 0.8.7
+Version 0.8.8
 ~~~~~~~~~~~~~
 Released: 2013-xx-xx
 
@@ -20,13 +20,13 @@ Bugfixes:
 
 3. Commit changes in PackageKit-Qt git:
 
-git commit -a -m "Release version 0.8.7"
-git tag -s -f -m "Release 0.8.7" QPACKAGEKIT_0_8_7
+git commit -a -m "Release version 0.8.8"
+git tag -s -f -m "Release 0.8.8" QPACKAGEKIT_0_8_8
 <gpg password>
 git push --tags
 git push
 
-4. run './release.sh --version=0.8.7 --git-tag=QPACKAGEKIT_0_8_7 --sign'
+4. run './release.sh --version=0.8.8 --git-tag=QPACKAGEKIT_0_8_8 --sign'
 
 5. Upload tarball to:
 
@@ -42,7 +42,7 @@ git push
 8. Send an email to packagekit at lists.freedesktop.org
 
 =================================================
-PackageKit-Qt 0.8.7 released!
+PackageKit-Qt 0.8.8 released!
 
 Tarballs available here: http://www.packagekit.org/releases/
 
diff --git a/src/daemon.cpp b/src/daemon.cpp
index 5f1e372..7b49745 100644
--- a/src/daemon.cpp
+++ b/src/daemon.cpp
@@ -57,17 +57,6 @@ Daemon::Daemon(QObject *parent) :
                                   QDBusConnection::systemBus(),
                                   this);
 
-    connect(d->daemon, SIGNAL(Changed()),
-            this, SIGNAL(changed()));
-    connect(d->daemon, SIGNAL(RepoListChanged()),
-            this, SIGNAL(repoListChanged()));
-    connect(d->daemon, SIGNAL(RestartSchedule()),
-            this, SIGNAL(restartScheduled()));
-    connect(d->daemon, SIGNAL(TransactionListChanged(QStringList)),
-            this, SIGNAL(transactionListChanged(QStringList)));
-    connect(d->daemon, SIGNAL(UpdatesChanged()),
-            this, SIGNAL(updatesChanged()));
-
     // Set up database for desktop files
     QSqlDatabase db;
     db = QSqlDatabase::addDatabase("QSQLITE", PK_DESKTOP_DEFAULT_DATABASE);
@@ -75,6 +64,81 @@ Daemon::Daemon(QObject *parent) :
     if (!db.open()) {
         qDebug() << "Failed to initialize the desktop files database";
     }
+
+    qRegisterMetaType<PackageKit::Daemon::Network>("PackageKit::Daemon::Network");
+    qRegisterMetaType<PackageKit::Daemon::Authorize>("PackageKit::Daemon::Authorize");
+    qRegisterMetaType<PackageKit::Transaction::InternalError>("PackageKit::Transaction::InternalError");
+    qRegisterMetaType<PackageKit::Transaction::Role>("PackageKit::Transaction::Role");
+    qRegisterMetaType<PackageKit::Transaction::Error>("PackageKit::Transaction::Error");
+    qRegisterMetaType<PackageKit::Transaction::Exit>("PackageKit::Transaction::Exit");
+    qRegisterMetaType<PackageKit::Transaction::Filter>("PackageKit::Transaction::Filter");
+    qRegisterMetaType<PackageKit::Transaction::Message>("PackageKit::Transaction::Message");
+    qRegisterMetaType<PackageKit::Transaction::Status>("PackageKit::Transaction::Status");
+    qRegisterMetaType<PackageKit::Transaction::MediaType>("PackageKit::Transaction::MediaType");
+    qRegisterMetaType<PackageKit::Transaction::Provides>("PackageKit::Transaction::Provides");
+    qRegisterMetaType<PackageKit::Transaction::ProvidesFlag>("PackageKit::Transaction::ProvidesFlag");
+    qRegisterMetaType<PackageKit::Transaction::DistroUpgrade>("PackageKit::Transaction::DistroUpgrade");
+    qRegisterMetaType<PackageKit::Transaction::UpgradeKind>("PackageKit::Transaction::UpgradeKind");
+    qRegisterMetaType<PackageKit::Transaction::TransactionFlag>("PackageKit::Transaction::TransactionFlag");
+    qRegisterMetaType<PackageKit::Transaction::TransactionFlags>("PackageKit::Transaction::TransactionFlags");
+    qRegisterMetaType<PackageKit::Transaction::Restart>("PackageKit::Transaction::Restart");
+    qRegisterMetaType<PackageKit::Transaction::UpdateState>("PackageKit::Transaction::UpdateState");
+    qRegisterMetaType<PackageKit::Transaction::Group>("PackageKit::Transaction::Group");
+    qRegisterMetaType<PackageKit::Transaction::Info>("PackageKit::Transaction::Info");
+    qRegisterMetaType<PackageKit::Transaction::SigType>("PackageKit::Transaction::SigType");
+}
+
+void DaemonPrivate::setupSignal(const QString &signal, bool connect)
+{
+    Q_Q(Daemon);
+
+    const char *signalToConnect = 0;
+    const char *memberToConnect = 0;
+
+    if (signal == SIGNAL(changed())) {
+        signalToConnect = SIGNAL(Changed());
+        memberToConnect = SIGNAL(changed());
+    } else if (signal == SIGNAL(repoListChanged())) {
+        signalToConnect = SIGNAL(RepoListChanged());
+        memberToConnect = SIGNAL(repoListChanged());
+    } else if (signal == SIGNAL(restartScheduled())) {
+        signalToConnect = SIGNAL(RestartSchedule());
+        memberToConnect = SIGNAL(restartScheduled());
+    } else if (signal == SIGNAL(transactionListChanged(QStringList))) {
+        signalToConnect = SIGNAL(TransactionListChanged(QStringList));
+        memberToConnect = SIGNAL(transactionListChanged(QStringList));
+    } else if (signal == SIGNAL(updatesChanged())) {
+        signalToConnect = SIGNAL(UpdatesChanged());
+        memberToConnect = SIGNAL(updatesChanged());
+    }
+
+    if (signalToConnect && memberToConnect) {
+        if (connect) {
+            q->connect(daemon, signalToConnect, memberToConnect);
+        } else {
+            daemon->disconnect(signalToConnect, q, memberToConnect);
+        }
+    }
+}
+
+void Daemon::connectNotify(const char *signal)
+{
+    Q_D(Daemon);
+    if (!d->connectedSignals.contains(signal) && d->daemon) {
+        d->setupSignal(signal, true);
+    }
+    d->connectedSignals << signal;
+}
+
+void Daemon::disconnectNotify(const char *signal)
+{
+    Q_D(Daemon);
+    if (d->connectedSignals.contains(signal)) {
+        d->connectedSignals.removeOne(signal);
+        if (d->daemon && !d->connectedSignals.contains(signal)) {
+            d->setupSignal(signal, false);
+        }
+    }
 }
 
 Daemon::~Daemon()
@@ -87,6 +151,12 @@ Transaction::Roles Daemon::actions()
     return d->daemon->roles();
 }
 
+Transaction::ProvidesFlag Daemon::provides()
+{
+    Q_D(const Daemon);
+    return static_cast<Transaction::ProvidesFlag>(d->daemon->provides());
+}
+
 QString Daemon::backendName()
 {
     Q_D(const Daemon);
diff --git a/src/daemon.h b/src/daemon.h
index 06f112e..07d1654 100644
--- a/src/daemon.h
+++ b/src/daemon.h
@@ -52,6 +52,7 @@ class Daemon : public QObject
     Q_ENUMS(Network)
     Q_ENUMS(Authorize)
     Q_PROPERTY(Transaction::Roles actions READ actions NOTIFY changed)
+    Q_PROPERTY(Transaction::ProvidesFlag provides READ provides NOTIFY changed)
     Q_PROPERTY(QString backendName READ backendName NOTIFY changed)
     Q_PROPERTY(QString backendDescription READ backendDescription NOTIFY changed)
     Q_PROPERTY(QString backendAuthor READ backendAuthor NOTIFY changed)
@@ -107,6 +108,11 @@ public:
      */
     Transaction::Roles actions();
 
+    /**
+     * Returns all the actions supported by the current backend
+     */
+    Transaction::ProvidesFlag provides();
+
     /**
      * The backend name, e.g. "yum".
      */
@@ -397,6 +403,20 @@ Q_SIGNALS:
     void daemonQuit();
 
 protected:
+    /**
+     * This method connects to DBus signals
+     * \attention Make sure to call this method in inherited classes
+     * otherwise no signals will be emitted
+     */
+    virtual void connectNotify(const char *signal);
+
+    /**
+     * This method disconnects from DBus signals
+     * \attention Make sure to call this method in inherited classes
+     * otherwise no signals will be disconnected
+     */
+    virtual void disconnectNotify(const char *signal);
+
     DaemonPrivate * const d_ptr;
 
 private:
@@ -408,4 +428,7 @@ private:
 
 } // End namespace PackageKit
 
+Q_DECLARE_METATYPE(PackageKit::Daemon::Network)
+Q_DECLARE_METATYPE(PackageKit::Daemon::Authorize)
+
 #endif
diff --git a/src/daemonprivate.h b/src/daemonprivate.h
index 5ea2f53..0fcb9f1 100644
--- a/src/daemonprivate.h
+++ b/src/daemonprivate.h
@@ -42,8 +42,10 @@ protected:
     ::DaemonProxy *daemon;
     QStringList hints;
     QDBusError lastError;
+    QStringList connectedSignals;
 
     QList<Transaction*> transactions(const QList<QDBusObjectPath> &tids, QObject *parent);
+    void setupSignal(const QString &signal, bool connect);
 
 protected Q_SLOTS:
     void serviceUnregistered();
diff --git a/src/transaction.cpp b/src/transaction.cpp
index 113ff74..e9966c9 100644
--- a/src/transaction.cpp
+++ b/src/transaction.cpp
@@ -26,7 +26,8 @@
 #include "daemon.h"
 #include "common.h"
 
-#include <QtSql/QSqlQuery>
+#include <QSqlQuery>
+#include <QDBusError>
 
 #define RUN_TRANSACTION(blurb)                      \
         Q_D(Transaction);                           \
@@ -35,6 +36,7 @@
             r.waitForFinished();                    \
             if (r.isError()) {                      \
                 d->error = Transaction::parseError(r.error().name()); \
+                d->errorMessage = r.error().message(); \
             }                                                         \
         }                                           \
 
@@ -55,103 +57,134 @@ Transaction::Transaction(const QDBusObjectPath &tid, QObject *parent) :
     init(tid);
 }
 
-bool Transaction::init(const QDBusObjectPath &tid)
+void Transaction::connectNotify(const char *signal)
 {
     Q_D(Transaction);
-
-    if (d->p) {
-        return true;
+    if (!d->connectedSignals.contains(signal) && d->p) {
+        d->setupSignal(signal, true);
     }
+    d->connectedSignals << signal;
+}
 
-    // If the user used a null tid
-    // he want us to get it
-    if (tid.path().isNull()) {
-        d->tid = Daemon::global()->getTid();
-    } else {
-        d->tid = tid;
+void Transaction::disconnectNotify(const char *signal)
+{
+    Q_D(Transaction);
+    if (d->connectedSignals.contains(signal)) {
+        d->connectedSignals.removeOne(signal);
+        if (d->p && !d->connectedSignals.contains(signal)) {
+            d->setupSignal(signal, false);
+        }
     }
+}
 
-    if (d->tid.path().isEmpty()) {
-        d->error = Transaction::InternalErrorDaemonUnreachable;
-        return false;
-    } else {
-        
+void TransactionPrivate::setupSignal(const QString &signal, bool connect)
+{
+    Q_Q(Transaction);
+
+    const char *signalToConnect = 0;
+    const char *memberToConnect = 0;
+
+    if (signal == SIGNAL(changed())) {
+        signalToConnect = SIGNAL(Changed());
+        memberToConnect = SIGNAL(changed());
+    } else if (signal == SIGNAL(category(QString,QString,QString,QString,QString))) {
+        signalToConnect = SIGNAL(Category(QString,QString,QString,QString,QString));
+        memberToConnect = SIGNAL(category(QString,QString,QString,QString,QString));
+    } else if (signal == SIGNAL(details(QString,QString,PackageKit::Transaction::Group,QString,QString,qulonglong))) {
+        signalToConnect = SIGNAL(Details(QString,QString,uint,QString,QString,qulonglong));
+        memberToConnect = SLOT(Details(QString,QString,uint,QString,QString,qulonglong));
+    } else if (signal == SIGNAL(distroUpgrade(PackageKit::Transaction::DistroUpgrade,QString,QString))) {
+        signalToConnect = SIGNAL(DistroUpgrade(uint,QString,QString));
+        memberToConnect = SLOT(distroUpgrade(uint,QString,QString));
+    } else if (signal == SIGNAL(errorCode(PackageKit::Transaction::Error,QString))) {
+        signalToConnect = SIGNAL(ErrorCode(uint,QString));
+        memberToConnect = SLOT(errorCode(uint,QString));
+    } else if (signal == SIGNAL(files(QString,QStringList))) {
+        signalToConnect = SIGNAL(Files(QString,QStringList));
+        memberToConnect = SIGNAL(files(QString,QStringList));
+    } else if (signal == SIGNAL(finished(PackageKit::Transaction::Exit,uint))) {
+        signalToConnect = SIGNAL(Finished(uint,uint));
+        memberToConnect = SLOT(finished(uint,uint));
+    } else if (signal == SIGNAL(message(PackageKit::Transaction::Message,QString))) {
+        signalToConnect = SIGNAL(Message(uint,QString));
+        memberToConnect = SLOT(message(uint,QString));
+    } else if (signal == SIGNAL(package(PackageKit::Transaction::Info,QString,QString))) {
+        signalToConnect = SIGNAL(Package(uint,QString,QString));
+        memberToConnect = SLOT(Package(uint,QString,QString));
+    } else if (signal == SIGNAL(repoDetail(QString,QString,bool))) {
+        signalToConnect = SIGNAL(RepoDetail(QString,QString,bool));
+        memberToConnect = SIGNAL(repoDetail(QString,QString,bool));
+    } else if (signal == SIGNAL(repoSignatureRequired(QString,QString,QString,QString,QString,QString,QString,PackageKit::Transaction::SigType))) {
+        signalToConnect = SIGNAL(RepoSignatureRequired(QString,QString,QString,QString,QString,QString,QString,uint));
+        memberToConnect = SLOT(RepoSignatureRequired(QString,QString,QString,QString,QString,QString,QString,uint));
+    } else if (signal == SIGNAL(eulaRequired(QString,QString,QString,QString))) {
+        signalToConnect = SIGNAL(EulaRequired(QString,QString,QString,QString));
+        memberToConnect = SIGNAL(eulaRequired(QString,QString,QString,QString));
+    } else if (signal == SIGNAL(mediaChangeRequired(PackageKit::Transaction::MediaType,QString,QString))) {
+        signalToConnect = SIGNAL(MediaChangeRequired(uint,QString,QString));
+        memberToConnect = SLOT(mediaChangeRequired(uint,QString,QString));
+    } else if (signal == SIGNAL(itemProgress(QString,PackageKit::Transaction::Status,uint))) {
+        signalToConnect = SIGNAL(ItemProgress(QString,uint,uint));
+        memberToConnect = SLOT(ItemProgress(QString,uint,uint));
+    } else if (signal == SIGNAL(requireRestart(PackageKit::Transaction::Restart,QString))) {
+        signalToConnect = SIGNAL(RequireRestart(uint,QString));
+        memberToConnect = SLOT(requireRestart(uint,QString));
+    } else if (signal == SIGNAL(transaction(PackageKit::Transaction*))) {
+        signalToConnect = SIGNAL(Transaction(QDBusObjectPath,QString,bool,uint,uint,QString,uint,QString));
+        memberToConnect = SLOT(transaction(QDBusObjectPath,QString,bool,uint,uint,QString,uint,QString));
+    } else if (signal == SIGNAL(updateDetail(QString,QStringList,QStringList,QStringList,QStringList,QStringList,PackageKit::Transaction::Restart,QString,QString,PackageKit::Transaction::UpdateState,QDateTime,QDateTime))) {
+        signalToConnect = SIGNAL(UpdateDetail(QString,QStringList,QStringList,QStringList,QStringList,QStringList,uint,QString,QString,uint,QString,QString));
+        memberToConnect = SLOT(UpdateDetail(QString,QStringList,QStringList,QStringList,QStringList,QStringList,uint,QString,QString,uint,QString,QString));
     }
 
-    int retry = 0;
-    do {
-        d->p = new TransactionProxy(QLatin1String(PK_NAME),
-                                    d->tid.path(),
-                                    QDBusConnection::systemBus(),
-                                    this);
-        if (!d->p->isValid()) {
-            qWarning() << "Error, cannot create transaction proxy" << d->p->lastError();
-            QDBusMessage message;
-            message = QDBusMessage::createMethodCall(QLatin1String("org.freedesktop.DBus"),
-                                                     QLatin1String("/"),
-                                                     QLatin1String("org.freedesktop.DBus"),
-                                                     QLatin1String("StartServiceByName"));
-            message << qVariantFromValue(QString("org.freedesktop.PackageKit"));
-            message << qVariantFromValue(0U);
-            QDBusConnection::sessionBus().call(message, QDBus::BlockWithGui);
-
-            // The transaction was not created
-            delete d->p;
-            d->p = 0;
-            retry++;
+    if (signalToConnect && memberToConnect) {
+        if (connect) {
+            q->connect(p, signalToConnect, memberToConnect);
         } else {
-            retry = 0;
+            p->disconnect(signalToConnect, q, memberToConnect);
         }
-    } while (retry == 1);
+    }
+}
+
+bool Transaction::init(const QDBusObjectPath &tid)
+{
+    Q_D(Transaction);
 
-    // if the transaction proxy was not created return false
-    if (!d->p) {
-        return false;
+    if (d->p) {
+        return true;
+    }
+
+    if (!tid.path().isNull()) {
+        d->tid = tid;
     } else {
-        d->error = Transaction::InternalErrorNone;
-        if (!Daemon::global()->hints().isEmpty()) {
-            setHints(Daemon::global()->hints());
+        d->tid = Daemon::global()->getTid();
+        if (d->tid.path().isNull()) {
+            d->error = Transaction::InternalErrorFailed;
+            if (Daemon::global()->lastError().isValid()) {
+                d->errorMessage = Daemon::global()->lastError().message();
+            }
+            return false;
         }
     }
 
-    connect(d->p, SIGNAL(Changed()),
-            SIGNAL(changed()));
-    connect(d->p, SIGNAL(Category(QString,QString,QString,QString,QString)),
-            SIGNAL(category(QString,QString,QString,QString,QString)));
+    d->p = new TransactionProxy(QLatin1String(PK_NAME),
+                                d->tid.path(),
+                                QDBusConnection::systemBus(),
+                                this);
+    d->error = Transaction::InternalErrorNone;
+    d->errorMessage.clear();
+    if (!Daemon::global()->hints().isEmpty()) {
+        setHints(Daemon::global()->hints());
+    }
+
     connect(d->p, SIGNAL(Destroy()),
             SLOT(destroy()));
-    connect(d->p, SIGNAL(Destroy()),
-            SIGNAL(destroy()));
-    connect(d->p, SIGNAL(Details(QString,QString,uint,QString,QString,qulonglong)),
-            SLOT(Details(QString,QString,uint,QString,QString,qulonglong)));
-    connect(d->p, SIGNAL(DistroUpgrade(uint,QString,QString)),
-            SLOT(distroUpgrade(uint,QString,QString)));
-    connect(d->p, SIGNAL(ErrorCode(uint,QString)),
-            SLOT(errorCode(uint,QString)));
-    connect(d->p, SIGNAL(Files(QString,QStringList)),
-            SLOT(files(QString,QStringList)));
-    connect(d->p, SIGNAL(Finished(uint,uint)),
-            SLOT(finished(uint,uint)));
-    connect(d->p, SIGNAL(Message(uint,QString)),
-            SLOT(message(uint,QString)));
-    connect(d->p, SIGNAL(Package(uint,QString,QString)),
-            SLOT(Package(uint,QString,QString)));
-    connect(d->p, SIGNAL(RepoDetail(QString,QString,bool)),
-            SIGNAL(repoDetail(QString,QString,bool)));
-    connect(d->p, SIGNAL(RepoSignatureRequired(QString,QString,QString,QString,QString, QString,QString,uint)),
-            SLOT(RepoSignatureRequired(QString,QString,QString,QString,QString, QString,QString,uint)));
-    connect(d->p, SIGNAL(EulaRequired(QString,QString,QString,QString)),
-            SIGNAL(eulaRequired(QString,QString,QString,QString)));
-    connect(d->p, SIGNAL(MediaChangeRequired(uint,QString,QString)),
-            SLOT(mediaChangeRequired(uint,QString,QString)));
-    connect(d->p, SIGNAL(ItemProgress(QString,uint,uint)),
-            SLOT(ItemProgress(QString,uint,uint)));
-    connect(d->p, SIGNAL(RequireRestart(uint,QString)),
-            SLOT(requireRestart(uint,QString)));
-    connect(d->p, SIGNAL(Transaction(QDBusObjectPath,QString,bool,uint,uint,QString,uint,QString)),
-            SLOT(transaction(QDBusObjectPath,QString,bool,uint,uint,QString,uint,QString)));
-    connect(d->p, SIGNAL(UpdateDetail(QString,QStringList,QStringList,QStringList,QStringList,QStringList, uint,QString,QString,uint,QString,QString)),
-            SLOT(UpdateDetail(QString,QStringList,QStringList,QStringList,QStringList,QStringList,uint,QString,QString,uint,QString,QString)));
+
+    QStringList currentSignals = d->connectedSignals;
+    currentSignals.removeDuplicates();
+    foreach (const QString &signal, currentSignals) {
+        d->setupSignal(signal, true);
+    }
     return true;
 }
 
@@ -204,6 +237,18 @@ Transaction::InternalError Transaction::error() const
     return d->error;
 }
 
+Transaction::InternalError Transaction::internalError() const
+{
+    Q_D(const Transaction);
+    return d->error;
+}
+
+QString Transaction::internalErrorMessage() const
+{
+    Q_D(const Transaction);
+    return d->errorMessage;
+}
+
 bool Transaction::allowCancel() const
 {
     Q_D(const Transaction);
@@ -370,6 +415,15 @@ Transaction::Status Transaction::status() const
     return Transaction::StatusUnknown;
 }
 
+Transaction::TransactionFlags Transaction::transactionFlags() const
+{
+    Q_D(const Transaction);
+    if (d->p) {
+        return static_cast<Transaction::TransactionFlags>(d->p->transactionFlags());
+    }
+    return Transaction::TransactionFlagNone;
+}
+
 QDateTime Transaction::timespec() const
 {
     Q_D(const Transaction);
@@ -607,7 +661,16 @@ void Transaction::searchGroup(Group group, Filters filters)
 
 void Transaction::searchGroups(Groups groups, Transaction::Filters filters)
 {
-    searchGroups(groups, filters);
+    QStringList groupsStringList;
+    for (int i = 1; i < 64; ++i) {
+        if (groups & i) {
+            Transaction::Group group = static_cast<Transaction::Group>(i);
+            if (group != Transaction::GroupUnknown) {
+                groupsStringList << Daemon::enumToString<Transaction>(group, "Group");
+            }
+        }
+    }
+    searchGroups(groupsStringList, filters);
 }
 
 void Transaction::searchNames(const QStringList &search, Transaction::Filters filters)
diff --git a/src/transaction.h b/src/transaction.h
index c20cac5..ad1f14e 100644
--- a/src/transaction.h
+++ b/src/transaction.h
@@ -49,7 +49,7 @@ class TransactionPrivate;
 class Transaction : public QObject
 {
     Q_OBJECT
-    Q_ENUMS(InternalsError)
+    Q_ENUMS(InternalError)
     Q_ENUMS(Role)
     Q_ENUMS(Error)
     Q_ENUMS(Exit)
@@ -64,8 +64,13 @@ class Transaction : public QObject
     Q_ENUMS(Group)
     Q_ENUMS(Info)
     Q_ENUMS(SigType)
+    Q_ENUMS(Filter)
     Q_FLAGS(TransactionFlag TransactionFlags)
     Q_FLAGS(Filter Filters)
+    Q_PROPERTY(QDBusObjectPath tid READ tid NOTIFY changed)
+    Q_PROPERTY(InternalError error READ internalError NOTIFY changed)
+    Q_PROPERTY(InternalError internalError READ internalError NOTIFY changed)
+    Q_PROPERTY(QString internalErrorMessage READ internalErrorMessage NOTIFY changed)
     Q_PROPERTY(bool allowCancel READ allowCancel NOTIFY changed)
     Q_PROPERTY(bool isCallerActive READ isCallerActive NOTIFY changed)
     Q_PROPERTY(QString lastPackage READ lastPackage NOTIFY changed)
@@ -76,6 +81,13 @@ class Transaction : public QObject
     Q_PROPERTY(qulonglong downloadSizeRemaining READ downloadSizeRemaining)
     Q_PROPERTY(Role role READ role NOTIFY changed)
     Q_PROPERTY(Status status READ status NOTIFY changed)
+    Q_PROPERTY(TransactionFlags transactionFlags READ transactionFlags NOTIFY changed)
+    Q_PROPERTY(QDateTime timespec READ timespec NOTIFY changed)
+    Q_PROPERTY(bool succeeded READ succeeded NOTIFY changed)
+    Q_PROPERTY(uint duration READ duration NOTIFY changed)
+    Q_PROPERTY(QString data READ data NOTIFY changed)
+    Q_PROPERTY(uint uid READ uid NOTIFY changed)
+    Q_PROPERTY(QString cmdline READ cmdline NOTIFY changed)
 public:
     /**
      * Describes an error at the daemon level (for example, PackageKit crashes or is unreachable)
@@ -355,6 +367,7 @@ public:
         ProvidesPythonModule,
         ProvidesLanguageSupport
     };
+    Q_DECLARE_FLAGS(ProvidesFlag, Provides)
 
     /**
      * Describes an distro upgrade state
@@ -498,8 +511,6 @@ public:
      * The transaction object \b cannot be reused
      * (i.e. removePackages then installPackages)
      *
-     * \warning after creating the transaction object be sure
-     * to verify if it doesn't have any error()
      */
     Transaction(QObject *parent = 0);
 
@@ -536,7 +547,23 @@ public:
      * \return A value from TransactionError describing the state of the transaction
      * or 0 in case of not having an error
      */
-    Transaction::InternalError error() const;
+    Q_DECL_DEPRECATED InternalError error() const;
+
+    /**
+     * \brief Returns the error status of the Transaction
+     *
+     * \return A value from TransactionError describing the state of the transaction
+     * or 0 in case of not having an error
+     */
+    InternalError internalError() const;
+
+    /**
+     * \brief Returns the error message of the Transaction startup
+     *
+     * \return a string in case an error was set when trying to
+     *         perform an action
+     */
+    QString internalErrorMessage() const;
 
     /**
      * Indicates whether you can cancel the transaction or not
@@ -601,7 +628,7 @@ public:
      * like InstallPackages, SearchName or GetUpdates
      * \return the current role of the transaction
      */
-    Transaction::Role role() const;
+    Role role() const;
 
     /**
      * Returns the current state of the transaction
@@ -610,35 +637,10 @@ public:
     Status status() const;
 
     /**
-     * \brief Tells the underlying package manager to use the given \p hints
-     *
-     * This method allows the calling session to set transaction \p hints for
-     * the package manager which can change as the transaction runs.
-     *
-     * This method can be sent before the transaction has been run
-     * (by using Daemon::setHints) or whilst it is running
-     * (by using Transaction::setHints).
-     * There is no limit to the number of times this
-     * method can be sent, although some backends may only use the values
-     * that were set before the transaction was started.
-     *
-     * The \p hints can be filled with entries like these
-     * ('locale=en_GB.utf8','idle=true','interactive=false').
-     *
-     * \sa Daemon::setHints
-     */
-    Q_INVOKABLE void setHints(const QStringList &hints);
-
-    /**
-     * Convenience function to set this transaction \p hints
-     * \sa getDetails(const QStringList &hints)
+     * The current flags set in this transaction
+     * \return a \sa Transaction::TransactionFlags of this transaction
      */
-    Q_INVOKABLE void setHints(const QString &hints);
-
-    /**
-     * Reset the transaction for reuse
-     */
-    Q_INVOKABLE void reset();
+    TransactionFlags transactionFlags() const;
 
     /**
      * Returns the date at which the transaction was created
@@ -682,6 +684,37 @@ public:
      */
     QString cmdline() const;
 
+    /**
+     * \brief Tells the underlying package manager to use the given \p hints
+     *
+     * This method allows the calling session to set transaction \p hints for
+     * the package manager which can change as the transaction runs.
+     *
+     * This method can be sent before the transaction has been run
+     * (by using Daemon::setHints) or whilst it is running
+     * (by using Transaction::setHints).
+     * There is no limit to the number of times this
+     * method can be sent, although some backends may only use the values
+     * that were set before the transaction was started.
+     *
+     * The \p hints can be filled with entries like these
+     * ('locale=en_GB.utf8','idle=true','interactive=false').
+     *
+     * \sa Daemon::setHints
+     */
+    Q_INVOKABLE void setHints(const QStringList &hints);
+
+    /**
+     * Convenience function to set this transaction \p hints
+     * \sa getDetails(const QStringList &hints)
+     */
+    Q_INVOKABLE void setHints(const QString &hints);
+
+    /**
+     * Reset the transaction for reuse
+     */
+    Q_INVOKABLE void reset();
+
     /**
      * \brief Accepts an EULA
      *
@@ -689,18 +722,24 @@ public:
      *
      * \note You need to manually restart the transaction which triggered the EULA.
      * \sa eulaRequired()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
-    void acceptEula(const QString &eulaID);
+    Q_INVOKABLE void acceptEula(const QString &eulaID);
 
     /**
      * Download the given \p packages to a temp dir, if \p storeInCache is true
      * the download will be stored in the package manager cache
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
-    void downloadPackages(const QStringList &packageIDs, bool storeInCache = false);
+    Q_INVOKABLE void downloadPackages(const QStringList &packageIDs, bool storeInCache = false);
 
     /**
      * This is a convenience function to download this \p package
      * \sa downloadPackages(const QStringList &packageIDs, bool storeInCache = false)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void downloadPackage(const QString &packageID, bool storeInCache = false);
 
@@ -708,6 +747,8 @@ public:
      * Returns the collection categories
      *
      * \sa category
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getCategories();
 
@@ -719,12 +760,16 @@ public:
      * fetch the dependencies's dependencies.
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getDepends(const QStringList &packageIDs, Filters filters, bool recursive = false);
 
     /**
      * Convenience function to get the dependencies of this \p package
      * \sa getDetails(const QStringList &packageIDs, Filters filters, bool recursive = false)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getDepends(const QString &packageID, Filters filters , bool recursive = false);
 
@@ -734,12 +779,16 @@ public:
      * \sa Transaction::details
      * \note This method emits \sa package()
      * with details set
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getDetails(const QStringList &packageIDs);
 
     /**
      * Convenience function to get the details about this \p package
      * \sa getDetails(const QStringList &packageIDs)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getDetails(const QString &packageID);
 
@@ -747,12 +796,16 @@ public:
      * Gets the files contained in the given \p packages
      *
      * \note This method emits \sa files()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getFiles(const QStringList &packageIDs);
 
     /**
      * Convenience function to get the files contained in this \p package
      * \sa getRequires(const QStringList &packageIDs)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getFiles(const QString &packageIDs);
 
@@ -761,6 +814,8 @@ public:
      *
      * \note You must delete these transactions yourself
      * \note This method emits \sa transaction()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getOldTransactions(uint number);
 
@@ -768,6 +823,8 @@ public:
      * Gets all the packages matching the given \p filters
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getPackages(Filters filters = FilterNone);
 
@@ -775,6 +832,8 @@ public:
      * Gets the list of software repositories matching the given \p filters
      *
      * \note This method emits \sa repository()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getRepoList(Filters filter = FilterNone);
 
@@ -786,12 +845,16 @@ public:
      * also search for the package requiring the resulting packages.
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getRequires(const QStringList &packageIDs, Filters filters, bool recursive = false);
 
     /**
      * Convenience function to get packages requiring this package
      * \sa getRequires(const QStringList &packageIDs, Filters filters, bool recursive = false)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getRequires(const QString &packageID, Filters filters, bool recursive = false);
 
@@ -799,12 +862,16 @@ public:
      * Retrieves more details about the update for the given \p packageIDs
      *
      * \note This method emits \sa updateDetail()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getUpdatesDetails(const QStringList &packageIDs);
 
     /**
      * Convenience function to get update details
      * \sa getUpdateDetail(const QStringList &packageIDs)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getUpdateDetail(const QString &packageID);
 
@@ -814,6 +881,8 @@ public:
      * The \p filters parameters can be used to restrict the updates returned
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getUpdates(Filters filters = FilterNone);
 
@@ -821,6 +890,8 @@ public:
      * Retrieves the available distribution upgrades
      *
      * \note This method emits \sa distroUpgrade()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void getDistroUpgrades();
 
@@ -829,14 +900,17 @@ public:
      *
      * \p onlyTrusted indicate if the packages are signed by a trusted authority
      *
-     * \note This method emits \sa package()
-     * and \sa changed()
+     * \note This method emits \sa package() and \sa changed()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void installFiles(const QStringList &files, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
     /**
      * Convenience function to install a file
      * \sa installFiles(const QStringList &files, TransactionFlags flags)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void installFile(const QString &file, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
@@ -845,14 +919,17 @@ public:
      *
      * \p only_trusted indicates if we should allow installation of untrusted packages (requires a different authorization)
      *
-     * \note This method emits \sa package()
-     * and \sa changed()
+     * \note This method emits \sa package() and \sa changed()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void installPackages(const QStringList &packageIDs, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
     /**
      * Convenience function to install a package
      * \sa installPackages(const QStringList &packageIDs, TransactionFlags flags)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void installPackage(const QString &packageID, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
@@ -860,6 +937,8 @@ public:
      * \brief Installs a signature
      *
      * \p type, \p keyId and \p package generally come from the Transaction::repoSignatureRequired
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void installSignature(SigType type, const QString &keyID, const QString &packageID);
 
@@ -867,6 +946,8 @@ public:
      * Refreshes the package manager's cache
      *
      * \note This method emits \sa changed()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void refreshCache(bool force);
 
@@ -877,29 +958,39 @@ public:
      * packages to be removed. \p autoRemove tells the package manager to remove all the package which
      * won't be needed anymore after the packages are uninstalled.
      *
-     * \note This method emits \sa package()
-     * and \sa changed()
+     * \note This method emits \sa package() and \sa changed()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void removePackages(const QStringList &packageIDs, bool allowDeps = false, bool autoRemove = false, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
     /**
      * Convenience function to remove a package
+     *
      * \sa removePackages(const PackageList  &packages, bool allowDeps = false, bool autoRemove = false, TransactionFlags flags)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void removePackage(const QString &packageID, bool allowDeps = false, bool autoRemove = false, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
     /**
      * Repairs a broken system
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void repairSystem(TransactionFlags flags = TransactionFlagOnlyTrusted);
 
     /**
      * Activates or disables a repository
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void repoEnable(const QString &repoId, bool enable = true);
 
     /**
      * Sets a repository's parameter
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void repoSetData(const QString &repoId, const QString &parameter, const QString &value);
 
@@ -909,12 +1000,16 @@ public:
      * The \p filters can be used to restrict the search
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void resolve(const QStringList &packageNames, Filters filters = FilterNone);
 
     /**
      * Convenience function to remove a package name
      * \sa resolve(const QStringList &packageNames, Filters filters = FilterNone)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void resolve(const QString &packageName, Filters filters = FilterNone);
 
@@ -924,12 +1019,16 @@ public:
      * \p filters can be used to restrict the returned packages
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchFiles(const QStringList &search, Filters filters = FilterNone);
 
     /**
      * Convenience function to search for a file
      * \sa searchFiles(const QStringList &search, Filters filters = FilterNone)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchFiles(const QString &search, Filters filters = FilterNone);
 
@@ -939,12 +1038,16 @@ public:
      * \p filters can be used to restrict the returned packages
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchDetails(const QStringList &search, Filters filters = FilterNone);
 
     /**
      * Convenience function to search by details
      * \sa searchDetails(const QStringList &search, Filters filters = FilterNone)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchDetails(const QString &search, Filters filters = FilterNone);
 
@@ -956,18 +1059,24 @@ public:
      * \p filters can be used to restrict the returned packages
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchGroups(const QStringList &groups, Filters filters = FilterNone);
 
     /**
      * Convenience function to search by group string
      * \sa searchGroups(const QStringList &groups, Filters filters = FilterNone)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchGroup(const QString &group, Filters filters = FilterNone);
     
     /**
      * Convenience function to search by group enum
      * \sa searchGroups(const QStringList &groups, Filters filters = FilterNone)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchGroup(Group group, Filters filters = FilterNone);
 
@@ -977,6 +1086,8 @@ public:
      * \p filters can be used to restrict the returned packages
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchGroups(Groups group, Filters filters = FilterNone);
 
@@ -986,12 +1097,16 @@ public:
      * \p filters can be used to restrict the returned packages
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchNames(const QStringList &search, Filters filters = FilterNone);
 
     /**
      * Convenience function to search by names
      * \sa searchNames(const QStringList &search, Filters filters)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void searchNames(const QString &search, Filters filters = FilterNone);
 
@@ -999,14 +1114,17 @@ public:
      * Update the given \p packages
      *
      * \p onlyTrusted indicates if this transaction is only allowed to install trusted packages
-     * \note This method emits \sa package()
-     * and \sa changed()
+     * \note This method emits \sa package() and \sa changed()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void updatePackages(const QStringList &packageIDs, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
     /**
      * Convenience function to update a package
      * \sa updatePackages(const QStringList &packageIDs, TransactionFlags flags)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void updatePackage(const QString &packageID, TransactionFlags flags = TransactionFlagOnlyTrusted);
 
@@ -1027,6 +1145,8 @@ public:
      * \li changed()
      * \li error()
      * \li package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void upgradeSystem(const QString &distroId, UpgradeKind kind);
 
@@ -1034,17 +1154,23 @@ public:
      * Searchs for a package providing a file/a mimetype
      *
      * \note This method emits \sa package()
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void whatProvides(Provides type, const QStringList &search, Filters filters = FilterNone);
 
     /**
      * Convenience function to search for what provides
      * \sa whatProvides(Provides type, const QStringList &search, Filters filters = FilterNone)
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void whatProvides(Provides type, const QString &search, Filters filters = FilterNone);
 
     /**
      * Cancels the transaction
+     *
+     * \warning check \sa error() to know if it the call has any error
      */
     Q_INVOKABLE void cancel();
 
@@ -1221,6 +1347,20 @@ Q_SIGNALS:
 protected:
     static Transaction::InternalError parseError(const QString &errorName);
 
+    /**
+     * This method connects to DBus signals
+     * \attention Make sure to call this method in inherited classes
+     * otherwise no signals will be emitted
+     */
+    virtual void connectNotify(const char *signal);
+
+    /**
+     * This method disconnects from DBus signals
+     * \attention Make sure to call this method in inherited classes
+     * otherwise no signals will be disconnected
+     */
+    virtual void disconnectNotify(const char *signal);
+
     TransactionPrivate * const d_ptr;
 
 private:
@@ -1235,29 +1375,46 @@ private:
                 uint uid,
                 const QString &cmdline,
                 QObject *parent);
-    Q_DECLARE_PRIVATE(Transaction);
+    Q_DECLARE_PRIVATE(Transaction)
     Q_DISABLE_COPY(Transaction)
-    Q_PRIVATE_SLOT(d_ptr, void Details(const QString &pid, const QString &license, uint group, const QString &detail, const QString &url, qulonglong size));
-    Q_PRIVATE_SLOT(d_ptr, void distroUpgrade(uint type, const QString &name, const QString &description));
-    Q_PRIVATE_SLOT(d_ptr, void errorCode(uint error, const QString &details));
-    Q_PRIVATE_SLOT(d_ptr, void mediaChangeRequired(uint mediaType, const QString &mediaId, const QString &mediaText));
-    Q_PRIVATE_SLOT(d_ptr, void files(const QString &pid, const QStringList &filenames));
-    Q_PRIVATE_SLOT(d_ptr, void finished(uint exitCode, uint runtime));
-    Q_PRIVATE_SLOT(d_ptr, void message(uint type, const QString &message));
-    Q_PRIVATE_SLOT(d_ptr, void Package(uint info, const QString &pid, const QString &summary));
-    Q_PRIVATE_SLOT(d_ptr, void ItemProgress(const QString &itemID, uint status, uint percentage));
-    Q_PRIVATE_SLOT(d_ptr, void RepoSignatureRequired(const QString &pid, const QString &repoName, const QString &keyUrl, const QString &keyUserid, const QString &keyId, const QString &keyFingerprint, const QString &keyTimestamp, uint type));
-    Q_PRIVATE_SLOT(d_ptr, void requireRestart(uint type, const QString &pid));
-    Q_PRIVATE_SLOT(d_ptr, void transaction(const QDBusObjectPath &oldTid, const QString &timespec, bool succeeded, uint role, uint duration, const QString &data, uint uid, const QString &cmdline));
-    Q_PRIVATE_SLOT(d_ptr, void UpdateDetail(const QString &package_id, const QStringList &updates, const QStringList &obsoletes, const QStringList &vendor_urls, const QStringList &bugzilla_urls, const QStringList &cve_urls, uint restart, const QString &update_text, const QString &changelog, uint state, const QString &issued, const QString &updated));
-    Q_PRIVATE_SLOT(d_ptr, void destroy());
-    Q_PRIVATE_SLOT(d_ptr, void daemonQuit());
+    Q_PRIVATE_SLOT(d_ptr, void Details(const QString &pid, const QString &license, uint group, const QString &detail, const QString &url, qulonglong size))
+    Q_PRIVATE_SLOT(d_ptr, void distroUpgrade(uint type, const QString &name, const QString &description))
+    Q_PRIVATE_SLOT(d_ptr, void errorCode(uint error, const QString &details))
+    Q_PRIVATE_SLOT(d_ptr, void mediaChangeRequired(uint mediaType, const QString &mediaId, const QString &mediaText))
+    Q_PRIVATE_SLOT(d_ptr, void finished(uint exitCode, uint runtime))
+    Q_PRIVATE_SLOT(d_ptr, void message(uint type, const QString &message))
+    Q_PRIVATE_SLOT(d_ptr, void Package(uint info, const QString &pid, const QString &summary))
+    Q_PRIVATE_SLOT(d_ptr, void ItemProgress(const QString &itemID, uint status, uint percentage))
+    Q_PRIVATE_SLOT(d_ptr, void RepoSignatureRequired(const QString &pid, const QString &repoName, const QString &keyUrl, const QString &keyUserid, const QString &keyId, const QString &keyFingerprint, const QString &keyTimestamp, uint type))
+    Q_PRIVATE_SLOT(d_ptr, void requireRestart(uint type, const QString &pid))
+    Q_PRIVATE_SLOT(d_ptr, void transaction(const QDBusObjectPath &oldTid, const QString &timespec, bool succeeded, uint role, uint duration, const QString &data, uint uid, const QString &cmdline))
+    Q_PRIVATE_SLOT(d_ptr, void UpdateDetail(const QString &package_id, const QStringList &updates, const QStringList &obsoletes, const QStringList &vendor_urls, const QStringList &bugzilla_urls, const QStringList &cve_urls, uint restart, const QString &update_text, const QString &changelog, uint state, const QString &issued, const QString &updated))
+    Q_PRIVATE_SLOT(d_ptr, void destroy())
+    Q_PRIVATE_SLOT(d_ptr, void daemonQuit())
 };
 Q_DECLARE_OPERATORS_FOR_FLAGS(Transaction::Filters)
 Q_DECLARE_OPERATORS_FOR_FLAGS(Transaction::TransactionFlags)
+Q_DECLARE_OPERATORS_FOR_FLAGS(Transaction::ProvidesFlag)
 
 } // End namespace PackageKit
-
+Q_DECLARE_METATYPE(PackageKit::Transaction::InternalError)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Role)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Error)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Exit)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Message)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Status)
+Q_DECLARE_METATYPE(PackageKit::Transaction::MediaType)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Provides)
+Q_DECLARE_METATYPE(PackageKit::Transaction::DistroUpgrade)
+Q_DECLARE_METATYPE(PackageKit::Transaction::TransactionFlag)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Restart)
+Q_DECLARE_METATYPE(PackageKit::Transaction::UpdateState)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Group)
 Q_DECLARE_METATYPE(PackageKit::Transaction::Info)
+Q_DECLARE_METATYPE(PackageKit::Transaction::SigType)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Filter)
+Q_DECLARE_METATYPE(PackageKit::Transaction::TransactionFlags)
+Q_DECLARE_METATYPE(PackageKit::Transaction::Filters)
+Q_DECLARE_METATYPE(PackageKit::Transaction::ProvidesFlag)
 
 #endif
diff --git a/src/transactionprivate.cpp b/src/transactionprivate.cpp
index 1bf50e1..ea0f559 100644
--- a/src/transactionprivate.cpp
+++ b/src/transactionprivate.cpp
@@ -73,12 +73,6 @@ void TransactionPrivate::mediaChangeRequired(uint mediaType, const QString &medi
                            mediaText);
 }
 
-void TransactionPrivate::files(const QString &pid, const QStringList &fileList)
-{
-    Q_Q(Transaction);
-    q->files(pid, fileList);
-}
-
 void TransactionPrivate::finished(uint exitCode, uint runtime)
 {
     Q_Q(Transaction);
@@ -92,6 +86,7 @@ void TransactionPrivate::destroy()
        delete p;
        p = 0;
     }
+    q->destroy();
 }
 
 void TransactionPrivate::daemonQuit()
@@ -121,7 +116,7 @@ void TransactionPrivate::ItemProgress(const QString &itemID, uint status, uint p
 {
     Q_Q(Transaction);
     q->itemProgress(itemID,
-                    static_cast<Transaction::Status>(status),
+                    static_cast<PackageKit::Transaction::Status>(status),
                     percentage);
 }
 
@@ -148,7 +143,7 @@ void TransactionPrivate::RepoSignatureRequired(const QString &pid,
 void TransactionPrivate::requireRestart(uint type, const QString &pid)
 {
     Q_Q(Transaction);
-    q->requireRestart(static_cast<Transaction::Restart>(type), pid);
+    q->requireRestart(static_cast<PackageKit::Transaction::Restart>(type), pid);
 }
 
 void TransactionPrivate::transaction(const QDBusObjectPath &oldTid,
@@ -184,10 +179,10 @@ void TransactionPrivate::UpdateDetail(const QString &package_id,
                     vendor_urls,
                     bugzilla_urls,
                     cve_urls,
-                    static_cast<Transaction::Restart>(restart),
+                    static_cast<PackageKit::Transaction::Restart>(restart),
                     update_text,
                     changelog,
-                    static_cast<Transaction::UpdateState>(state),
+                    static_cast<PackageKit::Transaction::UpdateState>(state),
                     QDateTime::fromString(issued, Qt::ISODate),
                     QDateTime::fromString(updated, Qt::ISODate));
 }
diff --git a/src/transactionprivate.h b/src/transactionprivate.h
index b70aa22..d6c9408 100644
--- a/src/transactionprivate.h
+++ b/src/transactionprivate.h
@@ -22,8 +22,9 @@
 #ifndef PACKAGEKIT_TRANSACTION_PRIVATE_H
 #define PACKAGEKIT_TRANSACTION_PRIVATE_H
 
-#include <QtCore/QString>
-#include <QtCore/QHash>
+#include <QString>
+#include <QHash>
+#include <QStringList>
 
 #include "transaction.h"
 
@@ -36,11 +37,12 @@ class TransactionPrivate
     Q_DECLARE_PUBLIC(Transaction)
 protected:
     TransactionPrivate(Transaction *parent);
-    virtual ~TransactionPrivate() {};
+    virtual ~TransactionPrivate() {}
 
     QDBusObjectPath tid;
     ::TransactionProxy* p;
     Transaction *q_ptr;
+    QStringList connectedSignals;
 
     // Only used for old transactions
     QDateTime timespec;
@@ -52,13 +54,15 @@ protected:
     QString cmdline;
 
     Transaction::InternalError error;
+    QString errorMessage;
+
+    void setupSignal(const QString &signal, bool connect);
 
 protected Q_SLOTS:
     void Details(const QString &pid, const QString &license, uint group, const QString &detail, const QString &url, qulonglong size);
     void distroUpgrade(uint type, const QString &name, const QString &description);
     void errorCode(uint error, const QString &details);
     void mediaChangeRequired(uint mediaType, const QString &mediaId, const QString &mediaText);
-    void files(const QString &pid, const QStringList &file_list);
     void finished(uint exitCode, uint runtime);
     void message(uint type, const QString &message);
     void Package(uint info, const QString &pid, const QString &summary);



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