net/systemeD/potlatch2/controller/DrawWay.as

   1 package net.systemeD.potlatch2.controller {
   2         import flash.events.*;
   3         import flash.geom.*;
   4     import net.systemeD.potlatch2.EditController;
   5     import net.systemeD.halcyon.connection.*;
   6     import net.systemeD.halcyon.Elastic;
   7
   8     public class DrawWay extends SelectedWay {
   9         private var elastic:Elastic;
  10         private var editEnd:Boolean;
  11
  12         public function DrawWay(way:Way, editEnd:Boolean) {
  13             super(way);
  14
  15             this.editEnd = editEnd;
  16         }
  17
  18         override public function processMouseEvent(event:MouseEvent, entity:Entity):ControllerState {
  19             var mouse:Point;
  20             var node:Node;
  21             var focus:Entity = NoSelection.getTopLevelFocusEntity(entity);
  22             if ( event.type == MouseEvent.CLICK ) {
  23                 if ( focus == null ) {
  24                     node = createAndAddNode(event);
  25                     resetElastic(node);
  26                 } else if ( focus is Node ) {
  27                     appendNode(focus as Node);
  28                 } else if ( focus is Way ) {
  29                     node = createAndAddNode(event);
  30                     Way(focus).insertNodeAtClosestPosition(node, true);
  31                     resetElastic(node);
  32                 }
  33             } else if ( event.type == MouseEvent.MOUSE_MOVE ) {
  34                 mouse = new Point(
  35                           controller.map.coord2lon(event.localX),
  36                           controller.map.coord2latp(event.localY));
  37                 elastic.end = mouse;
  38             }
  39
  40             return this;
  41         }
  42
  43         protected function resetElastic(node:Node):void {
  44             var mouse:Point = new Point(node.lon, node.latp);
  45             elastic.start = mouse;
  46             elastic.end = mouse;
  47         }
  48
  49         override public function processKeyboardEvent(event:KeyboardEvent):ControllerState {
  50             if ( event.keyCode == 13 || event.keyCode == 27 )
  51                 return new SelectedWay(selectedWay);
  52             return this;
  53         }
  54
  55         public function createAndAddNode(event:MouseEvent):Node {
  56             var lat:Number = controller.map.coord2lat(event.localY);
  57             var lon:Number = controller.map.coord2lon(event.localX);
  58             var node:Node = controller.connection.createNode({}, lat, lon);
  59             appendNode(node);
  60             return node;
  61         }
  62
  63         protected function appendNode(node:Node):void {
  64             if ( editEnd )
  65                 selectedWay.appendNode(node);
  66             else
  67                 selectedWay.insertNode(0, node);
  68         }
  69
  70         override public function enterState():void {
  71             super.enterState();
  72
  73             var node:Node = selectedWay.getNode(editEnd ? selectedWay.length - 1 : 0);
  74             var start:Point = new Point(node.lon, node.latp);
  75             elastic = new Elastic(controller.map, start, start);
  76         }
  77         override public function exitState():void {
  78             super.exitState();
  79             elastic.removeSprites();
  80             elastic = null;
  81         }
  82     }
  83 }