   
   func enableTextField() {
     sprint("enable text field")
-    textField.enabled = true
+    textField.editable = true
     textField.hidden = false
   }
 
   func disableTextField() {
     sprint("disable text field")
-    textField.enabled = false
+    textField.editable = false
     textField.hidden = true
   }
   

    }
  }
  
  func control(control: NSControl, textShouldEndEditing fieldEditor: NSText) -> Bool {
    concept.stringValue = textField.stringValue
    sprint("end editing \(concept.stringValue)")

  
  override func mouseDown(theEvent: NSEvent) {
    sprint("mouse down")
    if canvas.mode == .Concepts { concept.editing = true }
  }
  
