net/systemeD/potlatch2/mapfeatures/editors/SpeedChoice.as

   1 package net.systemeD.potlatch2.mapfeatures.editors {
   2
   3     import flash.events.*;
   4
   5         public class SpeedChoice extends EventDispatcher {
   6
   7         private static const speedRE:RegExp = /^([0-9.]+)\s*(.*)$/;
   8
   9         private var _scalar:Number = -1;
  10         private var _unit:String = null;
  11         private var _description:String = "";
  12         private var _value:String = null;
  13         private var _isEditable:Boolean = false;
  14
  15         public function SpeedChoice(speedStr:String) {
  16             value = speedStr;
  17         }
  18
  19         private function parseSpeedString(speedStr:String):Object {
  20             var match:Object = speedRE.exec(speedStr);
  21             if ( match == null )
  22                 return null;
  23
  24             try {
  25                 var scalar:Number = Number(match[1]);
  26                 var unit:String = match[2].replace(/\s/g, "");
  27                 if ( unit == null || unit == "" || unit == "kph" || unit == "kmh" )
  28                     unit = "km/h";
  29                 return {scalar: scalar, unit: unit};
  30             } catch ( exception:Object ) {
  31                 return null;
  32             }
  33
  34             return null;
  35         }
  36
  37         [Bindable(event="valueChange")]
  38         public function get scalar():String { return String(_scalar); }
  39
  40         [Bindable(event="valueChange")]
  41         public function get description():String { return _description; }
  42
  43         [Bindable(event="valueChange")]
  44         public function get value():String { return _value; }
  45
  46         [Bindable(event="valueChange")]
  47         public function get unit():String { return _unit; }
  48
  49         [Bindable(event="editableChange")]
  50         public function get isEditable():Boolean { return _isEditable; }
  51
  52         public function set isEditable(editable:Boolean):void {
  53             _isEditable = editable;
  54             dispatchEvent(new Event("editableChange"));
  55         }
  56
  57         public function isTagMatch(tagValue:String):Boolean {
  58             if ( _value == tagValue )
  59                 return true;
  60
  61             var tagSpeed:Object = parseSpeedString(tagValue);
  62             return tagSpeed != null && tagSpeed.scalar == _scalar && tagSpeed.unit == _unit;
  63         }
  64
  65         public function set value(speedStr:String):void {
  66             var speed:Object = parseSpeedString(speedStr);
  67             if ( speed != null ) {
  68                 _scalar = speed.scalar;
  69                 _unit = speed.unit;
  70                 _description = String(_scalar) + " "+_unit;
  71                 _value = String(_scalar) + (_unit == "km/h" ? "":_unit);
  72             } else {
  73                 _value = speedStr;
  74             }
  75             dispatchEvent(new Event("valueChange"));
  76         }
  77     }
  78
  79 }
  80
  81