Added some UI fixes

qml/Controls/AvailabilityIndicator.qml

@@ -4,9 +4,11 @@ import Utils 1.0
 
 Rectangle {
     property bool enabled: false
+    property bool neutral: true
 
     implicitWidth: 18
     implicitHeight: 18
     radius: implicitWidth / 2
-    color: enabled ? Palette.alternativeBackgroundColor : Palette.borderColor
+    color: enabled ? Palette.goodColor :
+                     (neutral ? Palette.borderColor : Palette.invalidColor)
 }

qml/Controls/TabButton.qml

@@ -15,6 +15,8 @@ TabButton {
         horizontalAlignment: Text.AlignHCenter
         verticalAlignment: Text.AlignVCenter
         elide: Text.ElideRight
+        maximumLineCount: 2
+        wrapMode: Text.Wrap
     }
 
     background: Item {

qml/MainWindow.qml

@@ -169,6 +169,7 @@ ApplicationWindow {
                             Controls.AvailabilityIndicator {
                                 id: connectionStatusIndicator
                                 enabled: false
+                                neutral: false
                                 Layout.alignment: Qt.AlignCenter
                             }
 

qml/Screens/BmsSettingsScreen.qml

@@ -692,32 +692,36 @@ RowLayout {
             Controls.OutlineButton {
                 text: qsTr("Read default settings")
                 Layout.fillWidth: true
-                onClicked: BmsInterface.commands().getBMSconfDefault()
+                onClicked: if (BmsInterface.isPortConnected()) {
+                               BmsInterface.commands().getBMSconfDefault()
+                           }
             }
 
             Controls.OutlineButton {
                 text: qsTr("Read current settings from BMS")
                 Layout.fillWidth: true
-                onClicked: BmsInterface.commands().getBMSconf()
+                onClicked: if (BmsInterface.isPortConnected()) {
+                               BmsInterface.commands().getBMSconf()
+                           }
             }
 
             Controls.OutlineButton {
                 text: qsTr("Write current values to BMS")
                 Layout.fillWidth: true
-                onClicked: {
-                    writeValuesToConfig()
-                    BmsInterface.commands().setBMSconf()
-                }
+                onClicked: if (BmsInterface.isPortConnected()) {
+                               writeValuesToConfig()
+                               BmsInterface.commands().setBMSconf()
+                           }
             }
 
             Controls.Button {
                 text: qsTr("Write to non-volatile memory of BMS")
                 Layout.fillWidth: true
-                onClicked: {
-                    needWait(true, qsTr("The settings are written to non-volatile memory.\nWait, please."))
-                    writeValuesToConfig()
-                    BmsInterface.commands().storeBMSConfig()
-                }
+                onClicked: if (BmsInterface.isPortConnected()) {
+                               needWait(true, qsTr("The settings are written to non-volatile memory.\nWait, please."))
+                               writeValuesToConfig()
+                               BmsInterface.commands().storeBMSConfig()
+                           }
             }
 
             Layout.fillWidth: true

qml/Utils/Palette.qml

@@ -25,4 +25,6 @@ QtObject {
 
     property color informationColor: "#4C68ED"
     property color invalidColor: "#A31C00"
+    property color goodColor: "#009352"
+    property color neutralColor: "#DFE0EB"
 }