             layoutButtonBackTop,
             layoutButtonBackBottom,
             layoutButtonBackLeft,
-            layoutButtonBackRight])
+            layoutButtonBackWidth])
+    }
+    
+    //MARK: actions
+    
+    func actionBack(sender button:UIButton)
+    {
+        
     }
 }

{
    private weak var controller:CHome!
    private let kBackgroundHeight:CGFloat = 50
    
    convenience init(controller:CHome)
    {

        buttonBack.imageView!.contentMode = UIViewContentMode.center
        buttonBack.imageView!.clipsToBounds = true
        buttonBack.imageView!.tintColor = UIColor(white:1, alpha:0.2)
        buttonBack.addTarget(
            self,
            action:#selector(self.actionBack(sender:)),
            for:UIControlEvents.touchUpInside)
        
        background.addSubview(buttonBack)
        addSubview(background)
