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

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