         newView.layoutRight = NSLayoutConstraint.rightToRight(
             view:newView,
             toView:self)
-        
-        addConstraints([
-            newView.layoutTop,
-            newView.layoutBottom,
-            newView.layoutLeft,
-            newView.layoutRight])
         
         UIView.animate(
             withDuration:kAnimationDuration,

        
        addSubview(viewBar)
        
        let constraintsBarHorizontal:[NSLayoutConstraint] = NSLayoutConstraint.equalsHorizontal(
            view:viewBar,
            toView:self)
        
        layoutBarTop = NSLayoutConstraint.topToTop(
            view:viewBar,
            toView:self)
        let layoutBarHeight:NSLayoutConstraint = NSLayoutConstraint.height(
            view:viewBar,
            constant:kBarHeight)
        
        addConstraints(constraintsBarHorizontal)
        
        addConstraints([
            layoutBarTop,
            layoutBarHeight])
    }
    
    //MARK: public

            toView:self,
            constant:left)
        
        layoutIfNeeded()
        
        if top >= 0
