notifications!

package/contents/config/main.xml

@@ -22,6 +22,13 @@
       <default>#008800</default>
     </entry>
 
+    <entry name="batteryThreshold" type="Int">
+      <default>10</default>
+    </entry>
+    <entry name="notifications" type="Bool">
+      <default>true</default>
+    </entry>
+
     <!-- debug -->
     <entry name="debug_active" type="Bool">
       <default>false</default>

package/contents/ui/CompactRepresentation.qml

@@ -7,13 +7,10 @@ import org.kde.kirigami 2.14 as Kirigami
 import "./lib/helper.js" as Helper
 
 Item {
-  Layout.minimumWidth: units.iconSizes.medium
-  Layout.alignment: Qt.AlignHCenter
-
   Rectangle { // battery
     id: container
     anchors.fill: parent
-    anchors.rightMargin: 2
+    anchors.rightMargin: 1
     anchors.topMargin: 10 - batteryheight
     anchors.bottomMargin: 10 - batteryheight
     color: "transparent"

package/contents/ui/config/general.qml

@@ -17,6 +17,9 @@ QQC2.Pane {
   property alias cfg_colorHalf: colorHalf.color
   property alias cfg_colorFull: colorFull.color
 
+  property alias cfg_notifications: notifications.checked
+  property alias cfg_batteryThreshold: batteryThreshold.value
+
   Kirigami.FormLayout {
     anchors.fill: parent
     wideMode: false
@@ -157,5 +160,40 @@ QQC2.Pane {
         color: Helper.interpolateColor( 1, [ cfg_colorEmpty.toString(), cfg_colorHalf.toString(), cfg_colorFull.toString() ])
       }
     }
+
+    GridLayout {
+      columns: 3
+      rows: 2
+      rowSpacing: 10
+
+      // first row
+      Text {
+        text: "notifications:"
+        color: PlasmaCore.Theme.textColor
+      }
+      PlasmaComponents.CheckBox {
+        id: notifications
+      }
+      Text {
+        text: ""
+      }
+
+      // second row
+      Text {
+        text: "battery threshold:"
+        color: PlasmaCore.Theme.textColor
+      }
+      PlasmaComponents.Slider {
+        id: batteryThreshold
+        value: 10
+        minimumValue: 1
+        maximumValue: 50
+        stepSize: 1
+      }
+      Text {
+        text: cfg_batteryThreshold
+        color: PlasmaCore.Theme.textColor
+      }
+    }
   }
 }

package/contents/ui/main.qml

@@ -4,6 +4,8 @@ import org.kde.plasma.plasmoid 2.0
 import org.kde.plasma.core 2.0 as PlasmaCore
 import org.kde.kirigami 2.14 as Kirigami
 
+import org.kde.notification 1.0
+
 import "./lib/helper.js" as Helper
 
 Item {
@@ -15,10 +17,14 @@ Item {
   property string colorHalf: Plasmoid.configuration.colorHalf
   property string colorFull: Plasmoid.configuration.colorFull
 
+  property bool notifications: Plasmoid.configuration.notifications
+  property int batteryThreshold: Plasmoid.configuration.batteryThreshold
+
   property bool debug_active: Plasmoid.configuration.debug_active
   property int debug_charge: Plasmoid.configuration.debug_charge
 
   property int batteryPercent: -2
+  property bool notification_sent: false;
 
   PlasmaCore.DataSource {
     id: hsSource
@@ -27,15 +33,36 @@ Item {
     interval: pollingrate * 1e3
     onNewData: {
       if(debug_active)
-        return batteryPercent = debug_charge;
-        
-      return batteryPercent = data['exit code'] > 0
-        ? -2 // not connected
-        : data['stdout'];
+        batteryPercent = debug_charge;
+      else
+        batteryPercent = data['exit code'] > 0
+          ? -2 // not connected
+          : +data.stdout;
+
+      // send notification if necessary
+      if(batteryPercent <= batteryThreshold && batteryPercent >= 0 && !notification_sent && notifications) {
+        notification_sent = true;
+        notification.text = "Battery Level is low (" + batteryPercent + "%)";
+        notification.title = "Headset Battery Level Alert";
+        notification.iconName = "notification-battery-low";
+        notification.sendEvent();
+      }
+      else // reset notifications if battery level is over batteryThreshold
+        notification_sent = false;
+
+      return;
     }
   }
 
   Plasmoid.preferredRepresentation: Plasmoid.compactRepresentation
   Plasmoid.fullRepresentation: FullRepresentation{} 
   Plasmoid.compactRepresentation: CompactRepresentation{}
+
+  Notification {
+    id: notification
+    componentName: "plasma_workspace"
+    eventId: "notification"
+    flags: Notification.Persistent
+    urgency: Notification.HighUrgency
+  }
 }