revert previous commit

slide/Editor/Format/Presentation.js

@@ -2608,7 +2608,7 @@ CPresentation.prototype =
                 oSlide = this.Slides[nIndex];
                 if(oSlide){
                     oSlide.setShow(bShow);
-                    //this.DrawingDocument.OnShowSlide(nIndex, oSlide.isVisible());
+                    this.DrawingDocument.OnRecalculatePage(nIndex, oSlide);//need only for update index label in thumbnails; TODO: remove it
                 }
             }
             this.DrawingDocument.OnEndRecalculate(false, false);

slide/Editor/Format/Slide.js

@@ -551,12 +551,6 @@ Slide.prototype =
                     }
                     break;
                 }
-                case AscDFH.historyitem_SlideSetShow:
-                {
-                    var oDrawingDocument = this.getDrawingDocument();
-                    //oDrawingDocument.OnShowSlide(this.num, this.isVisible());
-                    break;
-                }
             }
             this.addToRecalculate();
         }