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

   1 package net.systemeD.halcyon.connection.actions {
   2
   3     import net.systemeD.halcyon.connection.*;
   4         import net.systemeD.halcyon.Globals;
   5
   6     public class SplitWayAction extends CompositeUndoableAction {
   7
   8         private var selectedWay:Way;
   9         private var selectedNode:Node;
  10         private var newWay:Way;
  11
  12         public function SplitWayAction(selectedWay:Way, selectedNode:Node) {
  13             super("Split way "+selectedWay.id);
  14             this.selectedWay = selectedWay;
  15             this.selectedNode = selectedNode;
  16         }
  17
  18         public override function doAction():uint {
  19             if (newWay==null) {
  20                                 newWay = Connection.getConnection().createWay(
  21                                         selectedWay.getTagsCopy(),
  22                                         selectedWay.sliceNodes(selectedWay.indexOfNode(selectedNode),selectedWay.length),
  23                                         push);
  24
  25                                 selectedWay.deleteNodesFrom(selectedWay.indexOfNode(selectedNode)+1, push);
  26
  27                                 // copy relations
  28                                 // FIXME make this reversible
  29                                 // FIXME should be more clever about the position (for ordered relations).
  30                                 //        It should either be before, or after, the selectedWay, depending
  31                                 //        on the relative sequence of the relation members compared to the
  32                                 //        direction of selectedWay.
  33                                 // FIXME if we insert twice into the same relation, the position may become
  34                                 //        boggled (i.e. "10th position" is no longer valid if we previously
  35                                 //        inserted something earlier).
  36                                 for each (var o:Object in selectedWay.memberships) {
  37                                         o.relation.insertMember(o.position, new RelationMember(newWay, o.role));
  38                                 }
  39             }
  40             newWay.suspend();
  41             selectedWay.suspend();
  42             super.doAction();
  43             newWay.resume();
  44             selectedWay.resume();
  45             return SUCCESS;
  46         }
  47
  48         public override function undoAction():uint {
  49             selectedWay.suspend();
  50             newWay.suspend();
  51
  52             super.undoAction();
  53
  54             newWay.resume();
  55             selectedWay.resume();
  56             return SUCCESS;
  57         }
  58     }
  59
  60 }