net/systemeD/potlatch2/controller/ControllerState.as

   1 package net.systemeD.potlatch2.controller {
   2         import flash.events.*;
   3         import flash.display.*;
   4     import net.systemeD.halcyon.Map;
   5     import net.systemeD.halcyon.MapPaint;
   6     import net.systemeD.halcyon.connection.*;
   7     import net.systemeD.potlatch2.EditController;
   8         import net.systemeD.halcyon.Globals;
   9
  10     public class ControllerState {
  11
  12         protected var controller:EditController;
  13         protected var previousState:ControllerState;
  14
  15         protected var selectedNode:Node;
  16         public var selectedWay:Way;
  17
  18         public function ControllerState() {}
  19
  20         public function setController(controller:EditController):void {
  21             this.controller = controller;
  22         }
  23
  24         public function setPreviousState(previousState:ControllerState):void {
  25             if ( this.previousState == null )
  26                 this.previousState = previousState;
  27         }
  28
  29         public function processMouseEvent(event:MouseEvent, entity:Entity):ControllerState {
  30             return this;
  31         }
  32
  33         public function processKeyboardEvent(event:KeyboardEvent):ControllerState {
  34             return this;
  35         }
  36
  37                 public function get map():Map {
  38                         return controller.map;
  39                 }
  40
  41         public function enterState():void {}
  42         public function exitState():void {}
  43
  44                 public function toString():String {
  45                         return "(No state)";
  46                 }
  47
  48                 protected function sharedMouseEvents(event:MouseEvent, entity:Entity):ControllerState {
  49                         var paint:MapPaint = getMapPaint(DisplayObject(event.target));
  50             var focus:Entity = getTopLevelFocusEntity(entity);
  51
  52                         if ( event.type == MouseEvent.MOUSE_DOWN ) {
  53                                 if ( entity is Way && event.altKey && paint.isBackground ) {
  54                                         // pull way out of vector background layer
  55                                         return new SelectedWay(paint.findSource().pullThrough(entity,controller.connection));
  56                                 } else if ( entity is Way ) {
  57                                         // click way
  58                                         return new DragWay(focus as Way, event);
  59                                 } else if ( focus is Node ) {
  60                                         // select POI node
  61                                         return new DragPOINode(entity as Node,event,false);
  62                                 } else if ( entity is Node && selectedWay && entity.hasParent(selectedWay) ) {
  63                                         // select node within this way
  64                         return new DragWayNode(selectedWay,  getNodeIndex(selectedWay,entity as Node),  event, false);
  65                                 } else if ( entity is Node && focus is Way ) {
  66                                         // select way node
  67                                         return new DragWayNode(focus as Way, getNodeIndex(focus as Way,entity as Node), event, false);
  68                                 }
  69                         } else if ( event.type == MouseEvent.MOUSE_UP && focus == null && map.dragstate!=map.DRAGGING ) {
  70                                 return new NoSelection();
  71                         } else if ( event.type == MouseEvent.ROLL_OVER ) {
  72                                 controller.map.setHighlight(focus, { hover: true });
  73                         } else if ( event.type == MouseEvent.MOUSE_OUT ) {
  74                                 controller.map.setHighlight(focus, { hover: false });
  75                         }
  76                         return null;
  77                 }
  78
  79                 public static function getTopLevelFocusEntity(entity:Entity):Entity {
  80                         if ( entity is Node ) {
  81                                 for each (var parent:Entity in entity.parentWays) {
  82                                         return parent;
  83                                 }
  84                                 return entity;
  85                         } else if ( entity is Way ) {
  86                                 return entity;
  87                         } else {
  88                                 return null;
  89                         }
  90                 }
  91
  92                 protected function getMapPaint(d:DisplayObject):MapPaint {
  93                         while (d) {
  94                                 if (d is MapPaint) { return MapPaint(d); }
  95                                 d=d.parent;
  96                         }
  97                         return null;
  98                 }
  99
 100                 protected function getNodeIndex(way:Way,node:Node):uint {
 101                         for (var i:uint=0; i<way.length; i++) {
 102                                 if (way.getNode(i)==node) { return i; }
 103                         }
 104                         return null;
 105                 }
 106
 107
 108     }
 109 }