WIP: Complete add network and local printer flow

resources/qml/WelcomePages/AddLocalPrinterScrollView.qml

@@ -16,7 +16,9 @@ ScrollView
 {
     id: base
 
-    property var currentItem: null
+    property var currentItem: (machineList.currentIndex >= 0)
+                              ? machineList.model.getItem(machineList.currentIndex)
+                              : null
     property string currentSection: preferredCategory
     property string preferredCategory: "Ultimaker"
 
@@ -36,7 +38,6 @@ ScrollView
             var item = machineList.model.getItem(i)
             if (item.section == base.currentSection)
             {
-                base.currentItem = item
                 machineList.currentIndex = i
                 break
             }

resources/qml/WelcomePages/AddNetworkPrinterScrollView.qml

@@ -21,7 +21,9 @@ Item
     height: networkPrinterScrollView.height + controlsRectangle.height
 
     property alias maxItemCountAtOnce: networkPrinterScrollView.maxItemCountAtOnce
-    property var selectedItem: networkPrinterListView.model[networkPrinterListView.currentIndex]
+    property var currentItem: (networkPrinterListView.currentIndex >= 0)
+                              ? networkPrinterListView.model[networkPrinterListView.currentIndex]
+                              : null
 
     signal refreshButtonClicked()
     signal addByIpButtonClicked()

resources/qml/WelcomePages/AddPrinterBySelectionContent.qml

@@ -38,6 +38,7 @@ Item
         anchors.margins: 20
 
         title: catalog.i18nc("@label", "Add a network printer")
+        contentShown: true  // by default expand the network printer list
 
         onClicked:
         {
@@ -97,7 +98,7 @@ Item
         {
             id: localPrinterListComponent
 
-            AddPrinterScrollView
+            AddLocalPrinterScrollView
             {
                 id: localPrinterView
 
@@ -112,10 +113,42 @@ Item
         anchors.right: parent.right
         anchors.bottom: parent.bottom
         anchors.margins: 40
-        enabled: true  // TODO
+        enabled:
+        {
+            // If the network printer dropdown is expanded, make sure that there is a selected item
+            if (addNetworkPrinterDropDown.contentShown)
+            {
+                return addNetworkPrinterDropDown.contentItem.currentItem != null
+            }
+            else
+            {
+                return addLocalPrinterDropDown.contentItem.currentItem != null
+            }
+        }
+
         text: catalog.i18nc("@button", "Next")
         width: 140
         fixedWidthMode: true
-        onClicked: base.showNextPage()
+        onClicked:
+        {
+            // Create a network printer or a local printer according to the selection
+            if (addNetworkPrinterDropDown.contentShown)
+            {
+                // Create a network printer
+                const networkPrinterItem = addNetworkPrinterDropDown.contentItem.currentItem
+                CuraApplication.getDiscoveredPrinterModel().createMachineFromDiscoveredPrinter(networkPrinterItem)
+            }
+            else
+            {
+                // Create a local printer
+                const localPrinterItem = addLocalPrinterDropDown.contentItem.currentItem
+                Cura.MachineManager.addMachine(localPrinterItem.id)
+            }
+
+            // TODO: implement machine actions
+
+            // If we have created a machine, go to the last page, which is the "cloud" page.
+            base.gotoPage("cloud")
+        }
     }
 }

resources/qml/WelcomePages/DropDownHeader.qml

@@ -43,10 +43,7 @@ Cura.RoundedRectangle
         onEntered: base.hovered = true
         onExited: base.hovered = false
 
-        onClicked: {
-            base.contentShown = !base.contentShown
-            base.clicked()
-        }
+        onClicked: base.clicked()
     }
 
     Label

resources/qml/WelcomePages/DropDownWidget.qml

@@ -25,16 +25,21 @@ Item
     height: header.contentShown ? (header.height + contentRectangle.height + 30) : header.height
 
     property var contentComponent: null
+    property alias contentItem: contentLoader.item
 
     property alias title: header.title
-    property alias contentShown: header.contentShown
+    property bool contentShown: false
 
     signal clicked()
 
     Connections
     {
         target: header
-        onClicked: base.clicked()
+        onClicked:
+        {
+            base.contentShown = !base.contentShown
+            clicked()
+        }
     }
 
     DropDownHeader
@@ -45,7 +50,7 @@ Item
         anchors.right: parent.right
         height: UM.Theme.getSize("expandable_component_content_header").height
         rightIconSource: contentShown ? UM.Theme.getIcon("arrow_bottom") : UM.Theme.getIcon("arrow_right")
-
+        contentShown: base.contentShown
     }
 
     Cura.RoundedRectangle