de.sciss.mellite.gui.edit.EditAddRemoveScanLink.scala Maven / Gradle / Ivy

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///*
// *  EditAddRemoveScanLink.scala
// *  (Mellite)
// *
// *  Copyright (c) 2012-2016 Hanns Holger Rutz. All rights reserved.
// *
// *  This software is published under the GNU General Public License v3+
// *
// *
// *  For further information, please contact Hanns Holger Rutz at
// *  [email protected]
// */
//
//package de.sciss.mellite
//package gui
//package edit
//
//import javax.swing.undo.{AbstractUndoableEdit, CannotRedoException, CannotUndoException, UndoableEdit}
//
//import de.sciss.lucre.stm
//import de.sciss.lucre.stm.Sys
//import de.sciss.synth.proc.Scan
//
//// direction: true = insert, false = remove
//private[edit] final class EditAddRemoveScanLink[S <: Sys[S]](isAdd: Boolean,
//                                                       sourceH: stm.Source[S#Tx, Scan[S]],
//                                                       sinkH  : stm.Source[S#Tx, Scan[S]])
//                                                      (implicit cursor: stm.Cursor[S])
//  extends AbstractUndoableEdit {
//
//  override def undo(): Unit = {
//    super.undo()
//    cursor.step { implicit tx => perform(isUndo = true) }
//  }
//
//  override def redo(): Unit = {
//    super.redo()
//    cursor.step { implicit tx => perform() }
//  }
//
//  override def die(): Unit = {
//    val hasBeenDone = canUndo
//    super.die()
//    if (!hasBeenDone) {
//      // XXX TODO: dispose()
//    }
//  }
//
//  def perform()(implicit tx: S#Tx): Unit = perform(isUndo = false)
//
//  private def perform(isUndo: Boolean)(implicit tx: S#Tx): Unit = {
//    val source  = sourceH()
//    val sink    = sinkH  ()
//    val link    = Scan.Link.Scan(sink)
//    val success = if (isAdd ^ isUndo)
//      source.add(link)
//    else
//      source.remove(link)
//
//    if (!success) {
//      if (isUndo) throw new CannotUndoException()
//      else        throw new CannotRedoException()
//    }
//  }
//
//  override def getPresentationName = s"${if (isAdd) "Add" else "Remove"} Link"
//}
//object EditAddScanLink {
//  def apply[S <: Sys[S]](source: Scan[S], sink: Scan[S])(implicit tx: S#Tx, cursor: stm.Cursor[S]): UndoableEdit = {
//    val sourceH = tx.newHandle(source)
//    val sinkH   = tx.newHandle(sink)
//    val res = new EditAddRemoveScanLink(isAdd = true, sourceH = sourceH, sinkH = sinkH)
//    res.perform()
//    res
//  }
//}
//
//object EditRemoveScanLink {
//  def apply[S <: Sys[S]](source: Scan[S], sink: Scan[S])(implicit tx: S#Tx, cursor: stm.Cursor[S]): UndoableEdit = {
//    val sourceH = tx.newHandle(source)
//    val sinkH   = tx.newHandle(sink)
//    val res = new EditAddRemoveScanLink(isAdd = false, sourceH = sourceH, sinkH = sinkH)
//    res.perform()
//    res
//  }
//}