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         import net.systemeD.halcyon.Globals;
   8
   9         public class DrawWay extends SelectedWay {
  10                 private var elastic:Elastic;
  11                 private var editEnd:Boolean;
  12
  13                 public function DrawWay(way:Way, editEnd:Boolean) {
  14                         super(way);
  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
  23                         if ( event.type == MouseEvent.MOUSE_UP ) {
  24                                 if ( entity == null ) {
  25                                         node = createAndAddNode(event);
  26                                         resetElastic(node);
  27                                 } else if ( entity is Node ) {
  28                                         appendNode(entity as Node);
  29                                         controller.map.setHighlight(focus, { showNodesHover: false });
  30                                         controller.map.setHighlight(selectedWay, { showNodes: true });
  31                                         resetElastic(entity as Node);
  32                                 } else if ( entity is Way ) {
  33                                         node = createAndAddNode(event);
  34                                         Way(entity).insertNodeAtClosestPosition(node, true);
  35                                         resetElastic(node);
  36                                 }
  37                         } else if ( event.type == MouseEvent.MOUSE_MOVE ) {
  38                                 mouse = new Point(
  39                                                   controller.map.coord2lon(event.localX),
  40                                                   controller.map.coord2latp(event.localY));
  41                                 elastic.end = mouse;
  42                         } else if ( event.type == MouseEvent.MOUSE_OVER && focus!=selectedWay) {
  43                                 controller.map.setHighlight(focus, { showNodesHover: true });
  44                         } else if ( event.type == MouseEvent.MOUSE_OUT  && focus!=selectedWay) {
  45                                 controller.map.setHighlight(focus, { showNodesHover: false });
  46                                 controller.map.setHighlight(selectedWay, { showNodes: true });
  47                                 // ** this call to setHighlight(selectedWay) is necessary in case the hovered way (blue nodes)
  48                                 // shares any nodes with the selected way (red nodes): if they do, they'll be wiped out by the
  49                                 // first call.
  50                                 // Ultimately we should fix this by referring to 'way :selected nodes' instead of 'nodes :selectedway'.
  51                                 // But this will do for now.
  52                                 // We could do with an optional way of calling WayUI.redraw to only do the nodes, which would be a
  53                                 // useful optimisation.
  54                         }
  55
  56                         return this;
  57                 }
  58
  59                 protected function resetElastic(node:Node):void {
  60                         var mouse:Point = new Point(node.lon, node.latp);
  61                         elastic.start = mouse;
  62                         elastic.end = mouse;
  63                 }
  64
  65                 override public function processKeyboardEvent(event:KeyboardEvent):ControllerState {
  66                         if ( event.keyCode == 13 || event.keyCode == 27 )
  67                                 return new SelectedWay(selectedWay);
  68                         return this;
  69                 }
  70
  71                 public function createAndAddNode(event:MouseEvent):Node {
  72                         var lat:Number = controller.map.coord2lat(event.localY);
  73                         var lon:Number = controller.map.coord2lon(event.localX);
  74                         var node:Node = controller.connection.createNode({}, lat, lon);
  75                         appendNode(node);
  76                         return node;
  77                 }
  78
  79                 protected function appendNode(node:Node):void {
  80                         if ( editEnd )
  81                                 selectedWay.appendNode(node);
  82                         else
  83                                 selectedWay.insertNode(0, node);
  84                 }
  85
  86                 override public function enterState():void {
  87                         super.enterState();
  88
  89                         var node:Node = selectedWay.getNode(editEnd ? selectedWay.length - 1 : 0);
  90                         var start:Point = new Point(node.lon, node.latp);
  91                         elastic = new Elastic(controller.map, start, start);
  92                         Globals.vars.root.addDebug("**** -> "+this);
  93                 }
  94                 override public function exitState():void {
  95                         super.exitState();
  96                         elastic.removeSprites();
  97                         elastic = null;
  98                         Globals.vars.root.addDebug("**** <- "+this);
  99                 }
 100                 override public function toString():String {
 101                         return "DrawWay";
 102                 }
 103         }
 104 }