quicksettings/bluetooth: set connected devices as status

quicksettings/bluetooth/contents/ui/main.qml

@@ -7,17 +7,83 @@ import org.kde.bluezqt 1.0 as BluezQt
 import org.kde.plasma.private.mobileshell 1.0 as MobileShell
 
 MobileShell.QuickSetting {
+    property QtObject btManager: BluezQt.Manager
+    property var connectedDevices: []
+
+    id: root
+
     text: i18n("Bluetooth")
     icon: "network-bluetooth"
     settingsCommand: "plasma-open-settings kcm_bluetooth"
     function toggle() {
-        var enable = !BluezQt.Manager.bluetoothOperational;
+        const enable = !btManager.bluetoothOperational;
-        BluezQt.Manager.bluetoothBlocked = !enable;
+        btManager.bluetoothBlocked = !enable;
 
-        for (var i = 0; i < BluezQt.Manager.adapters.length; ++i) {
+        for (var i = 0; i < btManager.adapters.length; ++i) {
-            var adapter = BluezQt.Manager.adapters[i];
+            btManager.adapters[i].powered = enable;
-            adapter.powered = enable;
         }
     }
-    enabled: BluezQt.Manager.bluetoothOperational
+    enabled: btManager.bluetoothOperational
+
+    Connections {
+        target: btManager
+
+        function onDeviceAdded() {
+            updateConnectedDevices();
+        }
+        function onDeviceRemoved() {
+            updateConnectedDevices();
+        }
+        function onDeviceChanged() {
+            updateConnectedDevices();
+        }
+        function onBluetoothBlockedChanged() {
+            updateConnectedDevices();
+        }
+        function onBluetoothOperationalChanged() {
+            updateConnectedDevices();
+        }
+    }
+
+    function updateConnectedDevices() {
+        let _connectedDevices = [];
+        for (let i = 0; i < btManager.devices.length; ++i) {
+            const device = btManager.devices[i];
+            if (device.connected) {
+                _connectedDevices.push(device);
+            }
+        }
+
+        if (connectedDevices != _connectedDevices) {
+            connectedDevices = _connectedDevices;
+
+            if (connectedDevices.length === 0) {
+                root.status = ""
+            } else if (connectedDevices.length === 1) {
+                root.status = formatDevice(0);
+            } else {
+                let text = "";
+                for (let i = 0; i < connectedDevices.length; i++) {
+                    const device = connectedDevices[i];
+                    const battery = device.battery;
+                    text += formatDevice(i) + " \u2022 ";
+                }
+
+                // trims until the last dot
+                text = text.substring(0, text.length - 2);
+
+                root.status = text;
+            }
+        }
+    }
+
+    function formatDevice(deviceIndex) {
+        const device = connectedDevices[deviceIndex];
+        const battery = device.battery;
+        const name = device.name;
+
+        return battery
+            ? "%1 · %2".arg(name).arg(battery.percentage)
+            : name;
+    }
 }