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

   1 package net.systemeD.halcyon.connection.actions {
   2
   3     import net.systemeD.halcyon.connection.*;
   4
   5     public class DeleteWayAction extends UndoableEntityAction {
   6         private var setDeleted:Function;
   7         private var effects:CompositeUndoableAction;
   8         private var nodeList:Array;
   9         private var oldNodeList:Array;
  10
  11         public function DeleteWayAction(way:Way, setDeleted:Function, nodeList:Array) {
  12             super(way, "Delete");
  13             this.setDeleted = setDeleted;
  14             this.nodeList = nodeList;
  15         }
  16
  17         public override function doAction():uint {
  18             var way:Way = entity as Way;
  19             if ( way.isDeleted() )
  20                 return NO_CHANGE;
  21
  22             effects = new CompositeUndoableAction("Delete refs");
  23                         var node:Node;
  24                         way.suspend();
  25                         way.removeFromParents(effects.push);
  26                         oldNodeList = nodeList.slice();
  27                         while (nodeList.length > 0) {
  28                                 node=nodeList.pop();
  29                                 way.dispatchEvent(new WayNodeEvent(Connection.WAY_NODE_REMOVED, node, way, 0));
  30                                 node.removeParent(way);
  31                 if (!node.hasParents && !node.hasInterestingTags()) { //need to trigger redraw of new POIs?
  32                   node.remove(effects.push);
  33                 }
  34                         }
  35                         effects.doAction();
  36                         setDeleted(true);
  37
  38             // see note in DeleteNodeAction
  39             if (way.id < 0) {
  40               markClean();
  41             } else {
  42               markDirty();
  43             }
  44             way.dispatchEvent(new EntityEvent(Connection.WAY_DELETED, way));
  45                         way.resume();
  46
  47             return SUCCESS;
  48         }
  49
  50         public override function undoAction():uint {
  51             var way:Way = entity as Way;
  52                         way.suspend();
  53             setDeleted(false);
  54             if (way.id < 0) {
  55               markDirty();
  56             } else {
  57               markClean();
  58             }
  59             way.dispatchEvent(new EntityEvent(Connection.NEW_WAY, way));
  60             effects.undoAction();
  61             for each(var node:Node in oldNodeList) {
  62                 nodeList.push(node);
  63                 way.dispatchEvent(new WayNodeEvent(Connection.WAY_NODE_ADDED, node, way, 0));
  64             }
  65             way.resume();
  66             return SUCCESS;
  67         }
  68     }
  69 }
  70