net/systemeD/halcyon/connection/actions/RemoveNodeByIndexAction.as

   1 package net.systemeD.halcyon.connection.actions {
   2
   3     import net.systemeD.halcyon.connection.*;
   4
   5     public class RemoveNodeByIndexAction extends UndoableEntityAction {
   6
   7         private var way:Way;
   8         private var nodeList:Array;
   9         private var index:uint;
  10         private var removed:Array;
  11         private var fireEvent:Boolean;
  12
  13         public function RemoveNodeByIndexAction(way:Way, nodeList:Array, index:uint, fireEvent:Boolean=true) {
  14             super(way, "Remove node " + nodeList[index].id + " from position " + index);
  15             this.way = way;
  16             this.nodeList = nodeList;
  17             this.index = index;
  18             this.fireEvent = fireEvent;
  19         }
  20
  21                 public override function doAction():uint {
  22                         var preceding:Node=(index>1) ? nodeList[index-1] : null;
  23                         var node:Node=nodeList[index];
  24                         removed=[];
  25
  26                         while (nodeList[index]==node || nodeList[index]==preceding) {
  27                                 var removedNode:Node=nodeList.splice(index, 1)[0];
  28                                 removed.push(removedNode);
  29                                 if (nodeList.indexOf(removedNode)==-1) { removedNode.removeParent(way); }
  30                                 if (fireEvent) {
  31                                    entity.dispatchEvent(new WayNodeEvent(Connection.WAY_NODE_REMOVED, removedNode, way, index));
  32                                 }
  33                         }
  34                         way.deleted = nodeList.length == 0;
  35                         markDirty();
  36                         return SUCCESS;
  37                 }
  38
  39                 public override function undoAction():uint {
  40                         for (var i:uint=removed.length-1; i>=0; i--) {
  41                                 nodeList.splice(index, 0, removed[i]);
  42                                 removed[i].addParent(way);
  43                                 if (fireEvent) {
  44                                         entity.dispatchEvent(new WayNodeEvent(Connection.WAY_NODE_ADDED, removed[i], way, index));
  45                                 }
  46                         }
  47                         way.deleted = nodeList.length == 0;
  48                         markClean();
  49                         return SUCCESS;
  50         }
  51     }
  52 }