QtDBus: Use invokeMethod accepting member functions with arguments

This makes the code slightly more readable.

Rename one overload of QDBusConnectionManager::doConnectToBus to
avoid using qOverload.

Change-Id: Id878e5baade539c3f748b5bf66a5aff726604b89
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

src/dbus/qdbusconnectionmanager.cpp

@@ -164,12 +164,9 @@ QDBusConnectionPrivate *QDBusConnectionManager::connectToBus(QDBusConnection::Bu
 {
     QDBusConnectionPrivate *result = nullptr;
 
-    QMetaObject::invokeMethod(
-            this,
-            [this, type, &name, suspendedDelivery] {
-                return doConnectToBus(type, name, suspendedDelivery);
-            },
-            Qt::BlockingQueuedConnection, &result);
+    QMetaObject::invokeMethod(this, &QDBusConnectionManager::doConnectToStandardBus,
+                              Qt::BlockingQueuedConnection, qReturnArg(result), type, name,
+                              suspendedDelivery);
 
     if (suspendedDelivery && result && result->connection)
         result->enableDispatchDelayed(qApp); // qApp was checked in the caller
@@ -181,9 +178,8 @@ QDBusConnectionPrivate *QDBusConnectionManager::connectToBus(const QString &addr
 {
     QDBusConnectionPrivate *result = nullptr;
 
-    QMetaObject::invokeMethod(
-            this, [this, &address, &name] { return doConnectToBus(address, name); },
-            Qt::BlockingQueuedConnection, &result);
+    QMetaObject::invokeMethod(this, &QDBusConnectionManager::doConnectToBus,
+                              Qt::BlockingQueuedConnection, qReturnArg(result), address, name);
 
     return result;
 }
@@ -192,16 +188,15 @@ QDBusConnectionPrivate *QDBusConnectionManager::connectToPeer(const QString &add
 {
     QDBusConnectionPrivate *result = nullptr;
 
-    QMetaObject::invokeMethod(
-            this, [this, &address, &name] { return doConnectToPeer(address, name); },
-            Qt::BlockingQueuedConnection, &result);
+    QMetaObject::invokeMethod(this, &QDBusConnectionManager::doConnectToPeer,
+                              Qt::BlockingQueuedConnection, qReturnArg(result), address, name);
 
     return result;
 }
 
-QDBusConnectionPrivate *QDBusConnectionManager::doConnectToBus(QDBusConnection::BusType type,
-                                                               const QString &name,
-                                                               bool suspendedDelivery)
+QDBusConnectionPrivate *
+QDBusConnectionManager::doConnectToStandardBus(QDBusConnection::BusType type, const QString &name,
+                                               bool suspendedDelivery)
 {
     const auto locker = qt_scoped_lock(mutex);
 

src/dbus/qdbusconnectionmanager_p.h

@@ -52,8 +52,8 @@ protected:
     void run() override;
 
 private:
-    QDBusConnectionPrivate *doConnectToBus(QDBusConnection::BusType type, const QString &name,
-                                           bool suspendedDelivery);
+    QDBusConnectionPrivate *doConnectToStandardBus(QDBusConnection::BusType type,
+                                                   const QString &name, bool suspendedDelivery);
     QDBusConnectionPrivate *doConnectToBus(const QString &address, const QString &name);
     QDBusConnectionPrivate *doConnectToPeer(const QString &address, const QString &name);
 

src/dbus/qdbusintegrator.cpp

@@ -2714,8 +2714,8 @@ void QDBusConnectionPrivate::enableDispatchDelayed(QObject *context)
                 // This call cannot race with something disabling dispatch only
                 // because dispatch is never re-disabled from Qt code on an
                 // in-use connection once it has been enabled.
-                QMetaObject::invokeMethod(
-                        this, [this] { setDispatchEnabled(true); }, Qt::QueuedConnection);
+                QMetaObject::invokeMethod(this, &QDBusConnectionPrivate::setDispatchEnabled,
+                                          Qt::QueuedConnection, true);
                 if (!ref.deref())
                     deleteLater();
             },