1 files changed, 18 insertions, 0 deletions
diff --git a/Hotline/Utility/FoundationExtensions.swift b/Hotline/Utility/FoundationExtensions.swift
index 9cf2992..b5a2c34 100644
--- a/Hotline/Utility/FoundationExtensions.swift
+++ b/Hotline/Utility/FoundationExtensions.swift
@@ -594,3 +594,21 @@ extension FourCharCode {
     return String(bytes: bytes, encoding: .ascii) ?? ""
   }
 }
+
+extension Binding where Value: OptionSet, Value == Value.Element {
+  func bindedValue(_ options: Value) -> Bool {
+    return wrappedValue.contains(options)
+  }
+  
+  func bind(_ options: Value) -> Binding<Bool> {
+    return .init { () -> Bool in
+      self.wrappedValue.contains(options)
+    } set: { newValue in
+      if newValue {
+        self.wrappedValue.insert(options)
+      } else {
+        self.wrappedValue.remove(options)
+      }
+    }
+  }
+}