Fix issue when no Bluetooth device is available

Added async scan of the bluetooth adapter.
Done some cleanup to the public class.

Task-number: QTBUG-57676
Change-Id: Ia845f2f8c18fb8272160167482e5124c0b43fee7
Reviewed-by: Mikko Gronoff <mikko.gronoff@qt.io>
Reviewed-by: Samuli Piippo <samuli.piippo@qt.io>

1 files changed, 13 insertions, 1 deletions

diff --git a/src/settingsui/bluetooth/Bluetooth.qml b/src/settingsui/bluetooth/Bluetooth.qml
index 309f978..72b4ae6 100644
--- a/src/settingsui/bluetooth/Bluetooth.qml
+++ b/src/settingsui/bluetooth/Bluetooth.qml
@@ -47,6 +47,7 @@ Item {
             title: qsTr("Bluetooth status")
             Layout.fillWidth: true
             Layout.alignment: Qt.AlignTop
+            enabled: BtDevice.available
 
             RowLayout {
                 spacing: 10
@@ -56,8 +57,19 @@ Item {
                 }
                 Switch {
                     checked: BtDevice.powered
-                    onCheckedChanged: BtDevice.powered = checked
+                    onCheckedChanged: {
+                        BtDevice.powered = checked
+                    }
                 }
+
+                Connections {
+                    target: BtDevice
+                    onPoweredChanged: {
+                        if (BtDevice.powered)
+                            BtDevice.scanning = true
+                    }
+                }
+
                 Label {
                     text: qsTr("On")
                 }