QtQuick Controls TextField and TextArea miss mouse context menu

import QtQuick 1.1
import QtDesktop 0.1 as Desktop

MouseArea {
  id: editorContextMenu

  property Item editor
  signal menuShown

  anchors.fill: parent
  acceptedButtons: Qt.RightButton
  onPressed: {
    // selection gets lost due to focus loss
    var selectionStart = editor.selectionStart
    var selectionEnd = editor.selectionEnd
    var pos = mapToItem(null, mouseX, mouseY)
    menuLoader.sourceComponent = menuComponent
    menuLoader.item.showPopup(pos.x, pos.y)
    editor.select(selectionStart, selectionEnd)
    menuShown()
  }

  Component {
    id: menuComponent
    // Desktop.ContextMenu kann nicht direkt im Loader benutzt werden, da kein Item
    Item {
      function showPopup(x, y) {
        editmenu.showPopup(x, y)
      }
      Desktop.ContextMenu {
        id: editmenu

        onMenuClosed: menuLoader.sourceComponent = null

        Desktop.MenuItem {
          text: qsTr("cut")
          onTriggered: editor.cut()
          enabled: editor.selectedText.length > 0
        }
        Desktop.MenuItem {
          text: qsTr("copy")
          onTriggered: editor.copy()
          enabled: editor.selectedText.length > 0
        }
        Desktop.MenuItem {
          text: qsTr("paste")
          onTriggered: editor.paste()
          enabled: editor.canPaste
        }
      }
    }
  }
  Loader {
    id: menuLoader
  }
}