/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.J$kC-dnhokq/rev.7
 * 
 * authors: 
 *   GoToLoop

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



/** 
 * No Repeat ID Input (v2.0)
 * by GoToLoop (2015/Sep/15)
 *
 * Forum.Processing.org/two/discussion/12532/
 * windowjs-cross-mode-alert-confirm-prompt-other-js-api-for-java#Item_2
 *
 * Forum.Processing.org/two/discussion/869/check-array-contents-with-arraylist
 *
 * Bl.ocks.org/GoToLoop/8017bc38b8c8e0a5b70b
 * Studio.ProcessingTogether.com/sp/pad/export/ro.9$Bjf6i21oXBw
 */

import js.window;
import java.util.List;

final List<String> ids = new ArrayList<String>();
{
  for (String s : window.Array("alert()", "confirm()", "prompt()"))  ids.add(s);
}

void draw() {
  for (String id : ids)  print(id + " ");
  println(" ");

  final String id = window.prompt("Please enter new ID");

  if (id == null)  exit();
  else if (id.length() == 0)  window.alert("Empty ID Input!!!");
  else if (ids.contains(id))  window.alert("ID \"" + id + "\" exists already!");
  else {
    window.alert("ID \"" + id + "\" successfully added!!!");
    ids.add(id);
  }
}