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

   1 package net.systemeD.halcyon.connection.actions {
   2
   3     import net.systemeD.halcyon.connection.*;
   4
   5     public class SplitWayAction extends CompositeUndoableAction {
   6
   7         private var selectedWay:Way;
   8         private var selectedNode:Node;
   9         private var newWay:Way;
  10
  11         public function SplitWayAction(selectedWay:Way, selectedNode:Node) {
  12             super("Split way "+selectedWay.id);
  13             this.selectedWay = selectedWay;
  14             this.selectedNode = selectedNode;
  15         }
  16
  17         public override function doAction():uint {
  18             if (newWay==null) {
  19               newWay = Connection.getConnection().createWay(
  20                   selectedWay.getTagsCopy(),
  21                   selectedWay.sliceNodes(selectedWay.indexOfNode(selectedNode),selectedWay.length),
  22                   push);
  23
  24               selectedWay.deleteNodesFrom(selectedWay.indexOfNode(selectedNode)+1, push);
  25
  26               // copy relations
  27               // FIXME make this reversible
  28               // FIXME needs to copy roles as well
  29               // FIXME needs to insert the new way in the correct position in
  30               //        the relation, in order to not destroy ordered route relations.
  31               //        This will either be before, or after, the selectedWay, depending
  32               //        on the relative sequence of the relation members compared to the
  33               //        direction of selectedWay.
  34               for each (var r:Relation in selectedWay.parentRelations) {
  35                   r.appendMember(new RelationMember(newWay, ''));
  36               }
  37             }
  38             newWay.suspend();
  39             selectedWay.suspend();
  40             super.doAction();
  41             newWay.resume();
  42             selectedWay.resume();
  43             return SUCCESS;
  44         }
  45
  46         public override function undoAction():uint {
  47             selectedWay.suspend();
  48             newWay.suspend();
  49
  50             super.undoAction();
  51
  52             newWay.resume();
  53             selectedWay.resume();
  54             return SUCCESS;
  55         }
  56     }
  57
  58 }