Kde: Add sddm theme

kde/sddm/SessionButton.qml

@@ -0,0 +1,40 @@
+import QtQuick 2.2
+
+import org.kde.plasma.core 2.0 as PlasmaCore
+import org.kde.plasma.components 2.0 as PlasmaComponents
+
+import QtQuick.Controls 1.3 as QQC
+
+PlasmaComponents.ToolButton {
+    id: root
+    property int currentIndex: -1
+
+    implicitWidth: minimumWidth
+
+    visible: menu.items.length > 1
+
+    text: i18nd("plasma_lookandfeel_org.kde.lookandfeel", "Desktop Session: %1", instantiator.objectAt(currentIndex).text || "")
+
+    font.pointSize: config.fontSize
+
+    Component.onCompleted: {
+        currentIndex = sessionModel.lastIndex
+    }
+
+    menu: QQC.Menu {
+        id: menu
+        style: DropdownMenuStyle {}
+        Instantiator {
+            id: instantiator
+            model: sessionModel
+            onObjectAdded: menu.insertItem(index, object)
+            onObjectRemoved: menu.removeItem( object )
+            delegate: QQC.MenuItem {
+                text: model.name
+                onTriggered: {
+                    root.currentIndex = model.index
+                }
+            }
+        }
+    }
+}