ListSelector.qml Example File

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 import QtQuick 2.0

 Item {
     id: selector

     property alias list: view.model
     property alias selectedIndex: view.currentIndex
     property alias label: labelText.text
     property bool expanded

     width: 100; height: labelText.implicitHeight + 26

     Rectangle {
         anchors { left: parent.left; right: parent.right; bottom: parent.bottom; }

         height: labelText.implicitHeight + 4 + (expanded ? 20 * view.count : 20)
         Behavior on height { NumberAnimation { duration: 300 } }

         radius: 2
         border.width: 1
         border.color: "yellow"
         color: "yellow"

         MouseArea {
             anchors.fill: parent

             onClicked: selector.expanded = !selector.expanded

             Text {
                 id: labelText
                 anchors { left: parent.left; top: parent.top; margins: 2 }
             }

             Rectangle {
                 anchors {
                     left: parent.left; top: labelText.bottom;
                     right: parent.right; bottom: parent.bottom;
                     margins: 2
                     leftMargin: 10
                 }

                 radius: 2
                 color: "white"

                 ListView {
                     id: view

                     anchors.fill: parent

                     clip: true

                     delegate: Text {
                         anchors { left: parent.left; right: parent.right }
                         height: 20

                         verticalAlignment: Text.AlignVCenter

                         text: modelData

                         MouseArea {
                             anchors.fill: parent

                             onClicked: {
                                 view.currentIndex = index
                                 selector.expanded = !selector.expanded
                             }
                         }
                     }
                     highlight: Rectangle {
                         anchors { left: parent.left; right: parent.right }
                         height: 20
                         radius: 2

                         color: "yellow"
                     }
                 }
             }
         }
     }
 }