Reimplement pairingFinished method

The old implementation didn't use the correct deviceLabel pattern.
When the pairing status of a device was changed the name of the device
was missing from the new label. With the new implementation when the
pairing status is changed we replace the old state with the new one and
maintain the device information from the old label.
Also we set the same pairing background colors used in the
addRemoteDevice callback. In this way the label's state is consistent
and the UX is improved.

Signed-off-by: Claudiu Olteanu <olteanu.claudiu@ymail.com>

qt-ui/btdeviceselectiondialog.cpp

@@ -241,46 +241,53 @@ void BtDeviceSelectionDialog::displayPairingMenu(const QPoint &pos)
 
 void BtDeviceSelectionDialog::pairingFinished(const QBluetoothAddress &address, QBluetoothLocalDevice::Pairing pairing)
 {
+	// Determine the color, the new pairing status and the log message. By default we assume that the devices are UNPAIRED.
 	QString remoteDeviceStringAddress = address.toString();
-	QList<QListWidgetItem *> items = ui->discoveredDevicesList->findItems(remoteDeviceStringAddress, Qt::MatchContains);
-
-	if (pairing == QBluetoothLocalDevice::Paired || pairing == QBluetoothLocalDevice::Paired ) {
-		ui->dialogStatus->setText(QString("Device %1 was paired.")
-					  .arg(remoteDeviceStringAddress));
-
-		for (int i = 0; i < items.count(); ++i) {
-			QListWidgetItem *item = items.at(i);
-
-			item->setText(QString("%1   [State: PAIRED]").arg(remoteDeviceStringAddress));
-			item->setBackgroundColor(QColor(Qt::gray));
-		}
+	QColor pairingColor = QColor(Qt::red);
+	QString pairingStatusLabel = QString("UNPAIRED");
+	QString dialogStatusMessage = QString("Device %1 was unpaired.").arg(remoteDeviceStringAddress);
+	bool enableSaveButton = false;
 
-		QListWidgetItem *currentItem = ui->discoveredDevicesList->currentItem();
+	if (pairing == QBluetoothLocalDevice::Paired) {
+		pairingStatusLabel = QString("PAIRED");
+		pairingColor = QColor(Qt::gray);
+		enableSaveButton = true;
+		dialogStatusMessage = QString("Device %1 was paired.").arg(remoteDeviceStringAddress);
+	} else if (pairing == QBluetoothLocalDevice::AuthorizedPaired) {
+		pairingStatusLabel = QString("AUTHORIZED_PAIRED");
+		pairingColor = QColor(Qt::blue);
+		enableSaveButton = true;
+		dialogStatusMessage = QString("Device %1 was authorized paired.").arg(remoteDeviceStringAddress);
+	}
 
-		if (currentItem != NULL && currentItem->text().contains(remoteDeviceStringAddress, Qt::CaseInsensitive)) {
-			ui->dialogStatus->setText(QString("The device %1 can now be used for connection. You can press the Save button.")
-						  .arg(remoteDeviceStringAddress));
-			ui->save->setEnabled(true);
-		}
-	} else {
-		ui->dialogStatus->setText(QString("Device %1 was unpaired.")
-					  .arg(remoteDeviceStringAddress));
+	// Find the items which represent the BTH device and update their state
+	QList<QListWidgetItem *> items = ui->discoveredDevicesList->findItems(remoteDeviceStringAddress, Qt::MatchContains);
 
-		for (int i = 0; i < items.count(); ++i) {
-			QListWidgetItem *item = items.at(i);
+	for (int i = 0; i < items.count(); ++i) {
+		QListWidgetItem *item = items.at(i);
+		QString updatedDeviceLabel = item->text().replace(QRegularExpression("PAIRED|AUTHORIZED_PAIRED|UNPAIRED"),
+								  pairingStatusLabel);
 
-			item->setText(QString("%1   [State: UNPAIRED]").arg(remoteDeviceStringAddress));
-			item->setBackgroundColor(QColor(Qt::white));
-		}
+		item->setText(updatedDeviceLabel);
+		item->setBackgroundColor(pairingColor);
+	}
 
-		QListWidgetItem *currentItem = ui->discoveredDevicesList->currentItem();
+	// Check if the updated device is the selected one from the list and inform the user that it can/cannot start the download mode
+	QListWidgetItem *currentItem = ui->discoveredDevicesList->currentItem();
 
-		if (currentItem != NULL && currentItem->text().contains(remoteDeviceStringAddress, Qt::CaseInsensitive)) {
-			ui->dialogStatus->setText(QString("The device %1 must be paired in order to be used. Please use the context menu for pairing options.")
-						  .arg(remoteDeviceStringAddress));
-			ui->save->setEnabled(false);
+	if (currentItem != NULL && currentItem->text().contains(remoteDeviceStringAddress, Qt::CaseInsensitive)) {
+		if (pairing == QBluetoothLocalDevice::Unpaired) {
+			dialogStatusMessage = QString("The device %1 must be paired in order to be used. Please use the context menu for pairing options.")
+						     .arg(remoteDeviceStringAddress);
+		} else {
+			dialogStatusMessage = QString("The device %1 can now be used for connection. You can press the Save button.")
+						     .arg(remoteDeviceStringAddress);
 		}
 	}
+
+	// Update the save button and the dialog status message
+	ui->save->setEnabled(enableSaveButton);
+	ui->dialogStatus->setText(dialogStatusMessage);
 }
 
 void BtDeviceSelectionDialog::error(QBluetoothLocalDevice::Error error)