Scala example source code file (ListEvent.scala)

This example Scala source code file (ListEvent.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

componentevent, listchange, listchanged, listchanged, listelementsadded, listelementsremoved, listelementsremoved, listevent, listview, listview, range, range

The Scala ListEvent.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2007-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */



package scala.swing
package event

trait ListEvent[A] extends ComponentEvent {
  override val source: ListView[A]
}

//case class ElementSelected[A](override val source: ListView[A], range: Range, live: Boolean) 
//           extends ListEvent[A] with AdjustingEvent with ListSelectionEvent

abstract class ListChange[A](override val source: ListView[A]) extends ListEvent[A]

object ListChanged {
  def unapply[A](e: ListChanged[A]) = Some(e.source)
  def apply[A](source: ListView[A]) = new ListChanged(source)
}

class ListChanged[A](override val source: ListView[A]) extends ListChange(source) 
         
object ListElementsAdded {
  def unapply[A](e: ListElementsAdded[A]) = Some(e.source, e.range)
  def apply[A](source: ListView[A], range: Range) = new ListElementsAdded(source, range)
}
         
class ListElementsAdded[A](override val source: ListView[A], val range: Range) 
           extends ListChange(source)
           
object ListElementsRemoved {
  def unapply[A](e: ListElementsRemoved[A]) = Some(e.source, e.range)
  def apply[A](source: ListView[A], range: Range) = new ListElementsRemoved(source, range)
}
class ListElementsRemoved[A](override val source: ListView[A], val range: Range) 
           extends ListChange(source)