package 
  {
          //import com.example.programmingas3.filterWorkbench.ColorStringFormatter;
          //import com.example.programmingas3.filterWorkbench.IFilterFactory;
          
          import flash.events.Event;
          import flash.events.EventDispatcher;
          import flash.filters.BitmapFilter;
          import flash.filters.GlowFilter;
          
          // ------- Events -------
          [Event(name="change", type="flash.events.Event")]
          
          
          public class @ax-actionscript-book-FilterWorkbench-com-example-programmingas3-filterWorkbench-GlowFactory extends EventDispatcher implements actionscript_book_FilterWorkbench_com_example_programmingas3_filterWorkbench_IFilterFactory
          {
                  // ------- Private vars -------
                  private var _filter:GlowFilter;
                  private var _paramString:String;
                  
                  
                  // ------- Constructor -------
                  public function @ax-actionscript-book-FilterWorkbench-com-example-programmingas3-filterWorkbench-GlowFactory(color:uint = 0xFF0000,
                                                                            alpha:Number = 1,
                                                                            blurX:Number = 6,
                                                                            blurY:Number = 6,
                                                                            strength:Number = 2,
                                                                            quality:int = 1,
                                                                            inner:Boolean = false,
                                                                            knockout:Boolean = false)
                  {
                          _filter = new GlowFilter(color, alpha, blurX, blurY, strength, quality, inner, knockout);
                          _paramString = buildParamString(color, alpha, blurX, blurY, strength, quality, inner, knockout);
                  }
                  
                  
                  // ------- IFilterFactory implementation -------
                  public function getFilter():BitmapFilter
                  {
                          return _filter;
                  }
                  
                  
                  public function getCode():String
                  {
                          var result:String = "";
                          result += "import flash.filters.BitmapFilterQuality;\n";
                          result += "import flash.filters.GlowFilter;\n";
                          result += "\n";
                          result += "var glow:GlowFilter;\n";
                          result += "glow = new GlowFilter(" + _paramString + ");\n";
                          result += "\n";
                          result += "myDisplayObject.filters = [glow];";
                          return result;
                  }
                  
                  
                  // ------- Public methods -------
                  public function modifyFilter(color:uint = 0xFF0000,
                                                                             alpha:Number = 1,
                                                                             blurX:Number = 6,
                                                                             blurY:Number = 6,
                                                                             strength:Number = 2,
                                                                             quality:int = 1,
                                                                             inner:Boolean = false,
                                                                             knockout:Boolean = false):void
                  {
                          _filter = new GlowFilter(color, alpha, blurX, blurY, strength, quality, inner, knockout);
                          _paramString = buildParamString(color, alpha, blurX, blurY, strength, quality, inner, knockout);
                          dispatchEvent(new Event(Event.CHANGE));
                  }
                  
                  
                  // ------- Private methods -------
                  private function buildParamString(color:uint,
                                                                                          alpha:Number,
                                                                                          blurX:Number,
                                                                                          blurY:Number,
                                                                                          strength:Number,
                                                                                          quality:int,
                                                                                          inner:Boolean,
                                                                                          knockout:Boolean):String
                  {
                          var result:String = "\n\t\t" + actionscript_book_FilterWorkbench_com_example_programmingas3_filterWorkbench_ColorStringFormatter.formatColorHex24(color) + ",\n\t\t" + alpha.toString() + ",\n\t\t";
                          result += blurX.toString() + ",\n\t\t" + blurY.toString() + ",\n\t\t" + strength.toString() + ",\n\t\t";
                          
                          switch (quality)
                          {
                                  case 1:
                                          result += "BitmapFilterQuality.LOW";
                                          break;
                                  case 2:
                                          result += "BitmapFilterQuality.MEDIUM";
                                          break;
                                  case 3:
                                          result += "BitmapFilterQuality.HIGH";
                                          break;
                          }
                          
                          result += ",\n\t\t";
                          
                          result += inner.toString() + ",\n\t\t" + knockout.toString();
                          
                          return result;
                  }
          }
  }