net/systemeD/potlatch2/controller/SelectArea.as

   1 package net.systemeD.potlatch2.controller {
   2
   3         import flash.display.*;
   4         import flash.events.*;
   5         import net.systemeD.halcyon.connection.*;
   6
   7     public class SelectArea extends ControllerState {
   8
   9                 private var startX:Number;
  10                 private var startY:Number;
  11                 private var endX:Number;
  12                 private var endY:Number;
  13                 private var box:Shape;
  14                 private const TOLERANCE:uint=4;
  15                 private var originalSelection:Array;
  16
  17                 public function SelectArea(x:Number,y:Number,sel:Array) {
  18                         selection = sel.concat();
  19                         originalSelection = sel.concat();
  20                         startX=endX=x;
  21                         startY=endY=y;
  22                 }
  23
  24         override public function processMouseEvent(event:MouseEvent, entity:Entity):ControllerState {
  25             if (event.type==MouseEvent.MOUSE_MOVE) {
  26                                 // ** FIXME: weird things happen if you mouse-over the drag-and-drop panel
  27                                 endX=event.localX;
  28                                 endY=event.localY;
  29                                 drawSelectionBox();
  30                         } else if (event.type==MouseEvent.MOUSE_UP) {
  31                                 // select everything within boundary
  32                                 var a:Number;
  33                                 if (startX>endX) { a=startX; startX=endX; endX=a; }
  34                                 if (startY>endY) { a=startY; startY=endY; endY=a; }
  35                                 if (endX-startX<TOLERANCE && endY-startY<TOLERANCE) { return controller.findStateForSelection(originalSelection); }
  36                                 var left:Number=controller.map.coord2lon(startX);
  37                                 var right:Number=controller.map.coord2lon(endX);
  38                                 var top:Number=controller.map.coord2lat(startY);
  39                                 var bottom:Number=controller.map.coord2lat(endY);
  40                                 var entities:Object=layer.connection.getObjectsByBbox(left,right,top,bottom);
  41                                 for each (var way:Way  in entities.waysInside) { if (way.intersects(left,right,top,bottom)) toggleSelection(way); }
  42                                 for each (var poi:Node in entities.poisInside) { toggleSelection(poi); }
  43                                 return controller.findStateForSelection(selection);
  44                         }
  45             return this;
  46         }
  47
  48                 private function drawSelectionBox():void {
  49                         box.graphics.clear();
  50                         box.graphics.beginFill(0xDDDDFF,0.5);
  51                         box.graphics.lineStyle(1,0xFF0000);
  52                         box.graphics.drawRect(startX,startY,endX-startX,endY-startY);
  53                 }
  54
  55                 override public function enterState():void {
  56                         for each (var entity:Entity in selection) {
  57                                 layer.setHighlight(entity, { selected: true });
  58                         }
  59                         box=new Shape();
  60                         var l:DisplayObject=layer.getPaintSpriteAt(layer.maxlayer);
  61                         var o:DisplayObject=Sprite(l).getChildAt(3);
  62                         (o as Sprite).addChild(box);
  63                         controller.map.draggable=false;
  64                 }
  65                 override public function exitState(newState:ControllerState):void {
  66                         for each (var entity:Entity in originalSelection) {
  67                                 layer.setHighlight(entity, { selected: false });
  68                         }
  69                         box.parent.removeChild(box);
  70                         controller.map.draggable=true;
  71                         if (!newState.isSelectionState()) { controller.updateSelectionUI(); }
  72                 }
  73                 override public function toString():String {
  74                         return "SelectArea";
  75                 }
  76         }
  77
  78 }