Delete LabelSizeCalculatable

Author: kitasuke

Pod/Classes/MenuItemView.swift

@@ -291,20 +291,22 @@ extension MenuItemView: ViewCleanable {
     }
 }
 
-extension MenuItemView: LabelSizeCalculatable {
-    func labelWidth(_ widthMode: MenuItemWidthMode, estimatedSize: CGSize) -> CGFloat {
+// MARK: Lable Size
+
+extension MenuItemView {
+    fileprivate func labelWidth(_ widthMode: MenuItemWidthMode, estimatedSize: CGSize) -> CGFloat {
         switch widthMode {
         case .flexible: return ceil(estimatedSize.width)
         case .fixed(let width): return width
         }
     }
 
-    func estimatedLabelSize(_ label: UILabel) -> CGSize {
+    fileprivate func estimatedLabelSize(_ label: UILabel) -> CGSize {
         guard let text = label.text else { return .zero }
         return NSString(string: text).boundingRect(with: CGSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude), options: .usesLineFragmentOrigin, attributes: [NSFontAttributeName: label.font], context: nil).size
     }
 
-    func calculateLabelSize(_ label: UILabel, maxWidth: CGFloat) -> CGSize {
+    fileprivate func calculateLabelSize(_ label: UILabel, maxWidth: CGFloat) -> CGSize {
         guard let _ = label.text else { return .zero }
 
         let itemWidth: CGFloat