replaced InvertedBooleanProperty with DerivedProperty.not, see phetsi…

…ms/tambo#111
phetsims · Jun 8, 2020 · d6782d4 · d6782d4
1 parent 8ef959b
commit d6782d4
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/js/DerivedProperty.js b/js/DerivedProperty.js
@@ -202,6 +202,18 @@ class DerivedProperty extends Property {
   static or( properties, options ) {
     return new DerivedProperty( properties, _.reduce.bind( null, properties, orFunction, false ), options );
   }
+
+  /**
+   * Creates a derived boolean Property whose value is the inverse of the provided property.
+   * @public
+   *
+   * @param {<Property.<boolean>>} propertyToInvert
+   * @param {Object} [options] - Forwarded to the DerivedProperty
+   * @returns {DerivedProperty.<boolean>}
+   */
+  static not( propertyToInvert, options ) {
+    return new DerivedProperty( [ propertyToInvert ], x => !x, options );
+  }
 }
 
 const equalsFunction = ( a, b ) => {