Add global back button

Gui/Navigation.qml

@@ -3,77 +3,79 @@ import QtQuick.Controls
 import QtQuick.Layouts
 
 ColumnLayout {
+    property bool onSubPage: false
+
     height: parent.height
     spacing: 0
+    z: 3
+
+    Component.onCompleted: {
+        onSubPage = Qt.binding(() => contentStack.depth > 1);
+    }
 
     anchors {
         left: parent.left
         top: parent.top
     }
     ButtonGroup {
-        id: buttonBar
+        id: mainNav
+
     }
     BarButton {
-        id: dashBoard
-
-        ButtonGroup.group: buttonBar
+        ButtonGroup.group: mainNav
         icon.source: "qrc:/images/Square3Stack3D-Outline.svg"
-        text: qsTr("Dashboard")
         target: "/Gui/Dashboard.qml"
+        text: qsTr("Dashboard")
+        visible: !onSubPage
     }
     BarButton {
-        id: kunden
-
-        ButtonGroup.group: buttonBar
+        ButtonGroup.group: mainNav
         icon.source: "qrc:/images/UserGroup-Outline.svg"
-        text: qsTr("Kunden")
         target: "/Gui/CustomersTable.qml"
+        text: qsTr("Kunden")
+        visible: !onSubPage
     }
     BarButton {
-        id: objekt
-
-        ButtonGroup.group: buttonBar
+        ButtonGroup.group: mainNav
         icon.source: "qrc:/images/BuildingOffice2-Outline.svg"
-        text: qsTr("Objekt")
         target: "/Gui/ObjectsTable.qml"
+        text: qsTr("Objekt")
+        visible: !onSubPage
     }
     BarButton {
-        id: mitarbeiter
-
-        ButtonGroup.group: buttonBar
+        ButtonGroup.group: mainNav
         icon.source: "qrc:/images/Identification-Outline.svg"
-        text: qsTr("Mitarbeiter")
         target: "/Gui/Employees/EmployeesTable.qml"
+        text: qsTr("Mitarbeiter")
+        visible: !onSubPage
     }
     BarButton {
-        id: offers
-
-        ButtonGroup.group: buttonBar
+        ButtonGroup.group: mainNav
         icon.source: "qrc:/images/RectangleStack-Outline.svg"
-        text: qsTr("Angebote")
         target: "/Gui/OffersTable.qml"
+        text: qsTr("Angebote")
+        visible: !onSubPage
     }
     BarButton {
-        id: abrechnung
-
-        ButtonGroup.group: buttonBar
+        ButtonGroup.group: mainNav
         icon.source: "qrc:/images/Wallet-Outline.svg"
         text: qsTr("Abrechnung")
+        visible: !onSubPage
+    }
+    BarButton {
+        icon.source: "qrc:/images/ArrowLeftCircle-Outline.svg"
+        text: qsTr("Zurück")
+        visible: onSubPage
+        checkable: false
+
+        onClicked: contentStack.pop();
     }
     Item {
-        id: hspacer
-
         Layout.fillHeight: true
     }
     BarButton {
-        id: atajos
-
-        Layout.bottomMargin: Dimensions.s
         checkable: false
-        flat: true
         icon.source: "qrc:/images/Bars3.svg"
-        implicitHeight: 90
-        implicitWidth: 90
 
         onClicked: mainMenu.open()
 
@@ -87,6 +89,7 @@ ColumnLayout {
                     // TODO: Check if logged-in user is admin first!!
 
                     contentStack.push("PyqcrmConf.qml");
+
                 }
             }
             MenuSeparator {