Separate the view selector into a different file.

plugins/PreviewStage/PreviewMenu.qml

@@ -29,80 +29,12 @@ Item
         anchors.centerIn: parent
         height: parent.height
 
-        Cura.ExpandableComponent
+        Cura.ViewsSelector
         {
-            id: viewSelector
+            id: viewsSelector
-            iconSource: expanded ? UM.Theme.getIcon("arrow_bottom") : UM.Theme.getIcon("arrow_left")
             height: parent.height
             width: UM.Theme.getSize("views_selector").width
             headerCornerSide: Cura.RoundedRectangle.Direction.Left
-
-            property var viewModel: UM.ViewModel { }
-
-            property var activeView:
-            {
-                for (var i = 0; i < viewModel.rowCount(); i++)
-                {
-                    if (viewModel.items[i].active)
-                    {
-                        return viewModel.items[i]
-                    }
-                }
-                return null
-            }
-
-            Component.onCompleted:
-            {
-                // Nothing was active, so just return the first one (the list is sorted by priority, so the most
-                // important one should be returned)
-                if (activeView == null)
-                {
-                    UM.Controller.setActiveView(viewModel.getItem(0).id)
-                }
-            }
-
-            headerItem: Label
-            {
-                text: viewSelector.activeView ? viewSelector.activeView.name : ""
-                verticalAlignment: Text.AlignVCenter
-                height: parent.height
-                elide: Text.ElideRight
-                font: UM.Theme.getFont("default")
-                color: UM.Theme.getColor("text")
-                renderType: Text.NativeRendering
-            }
-
-            popupItem: Column
-            {
-                id: viewSelectorPopup
-                width: viewSelector.width - 2 * UM.Theme.getSize("default_margin").width
-
-                // For some reason the height/width of the column gets set to 0 if this is not set...
-                Component.onCompleted:
-                {
-                    height = implicitHeight
-                    width = viewSelector.width - 2 * UM.Theme.getSize("default_margin").width
-                }
-
-                Repeater
-                {
-                    id: viewsList
-                    model: viewSelector.viewModel
-                    RoundButton
-                    {
-                        text: name
-                        radius: UM.Theme.getSize("default_radius").width
-                        checkable: true
-                        checked: viewSelector.activeView != null ? viewSelector.activeView.id == id : false
-                        onClicked:
-                        {
-                            viewSelector.togglePopup()
-                            UM.Controller.setActiveView(id)
-                        }
-                    }
-                }
-
-            }
         }
 
         // Separator line

resources/qml/PrinterSelector/MachineSelector.qml

@@ -3,8 +3,6 @@
 
 import QtQuick 2.7
 import QtQuick.Controls 2.3
-import QtQuick.Controls.Styles 1.1
-import QtQuick.Layouts 1.1
 
 import UM 1.2 as UM
 import Cura 1.0 as Cura

resources/qml/ViewsSelector.qml

@@ -0,0 +1,82 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.3
+
+import UM 1.2 as UM
+import Cura 1.0 as Cura
+
+Cura.ExpandableComponent
+{
+    id: viewSelector
+
+    iconSource: expanded ? UM.Theme.getIcon("arrow_bottom") : UM.Theme.getIcon("arrow_left")
+
+    property var viewModel: UM.ViewModel { }
+
+    property var activeView:
+    {
+        for (var i = 0; i < viewModel.rowCount(); i++)
+        {
+            if (viewModel.items[i].active)
+            {
+                return viewModel.items[i]
+            }
+        }
+        return null
+    }
+
+    Component.onCompleted:
+    {
+        // Nothing was active, so just return the first one (the list is sorted by priority, so the most
+        // important one should be returned)
+        if (activeView == null)
+        {
+            UM.Controller.setActiveView(viewModel.getItem(0).id)
+        }
+    }
+
+    headerItem: Label
+    {
+        text: viewSelector.activeView ? viewSelector.activeView.name : ""
+        verticalAlignment: Text.AlignVCenter
+        height: parent.height
+        elide: Text.ElideRight
+        font: UM.Theme.getFont("default")
+        color: UM.Theme.getColor("text")
+        renderType: Text.NativeRendering
+    }
+
+    popupItem: Column
+    {
+        id: viewSelectorPopup
+        width: viewSelector.width - 2 * UM.Theme.getSize("default_margin").width
+
+        // For some reason the height/width of the column gets set to 0 if this is not set...
+        Component.onCompleted:
+        {
+            height = implicitHeight
+            width = viewSelector.width - 2 * UM.Theme.getSize("default_margin").width
+        }
+
+        Repeater
+        {
+            id: viewsList
+            model: viewSelector.viewModel
+            RoundButton
+            {
+                text: name
+                radius: UM.Theme.getSize("default_radius").width
+                checkable: true
+                checked: viewSelector.activeView != null ? viewSelector.activeView.id == id : false
+                onClicked:
+                {
+                    viewSelector.togglePopup()
+                    UM.Controller.setActiveView(id)
+                }
+            }
+        }
+
+    }
+}

resources/qml/qmldir

@@ -11,4 +11,5 @@ ActionPanelWidget 1.0 ActionPanelWidget.qml
 IconLabel 1.0 IconLabel.qml
 OutputDevicesActionButton 1.0 OutputDevicesActionButton.qml
 ExpandableComponent 1.0 ExpandableComponent.qml
-PrinterTypeLabel 1.0 PrinterTypeLabel.qml
+PrinterTypeLabel 1.0 PrinterTypeLabel.qml
+ViewsSelector 1.0 ViewsSelector.qml