Module javafx.base

Class IntegerExpression

    • Constructor Detail

      • IntegerExpression

        public IntegerExpression()
    • Method Detail

      • integerExpression

        public static IntegerExpression integerExpression​(ObservableIntegerValue value)
        Returns a IntegerExpression that wraps a ObservableIntegerValue. If the ObservableIntegerValue is already a IntegerExpression, it will be returned. Otherwise a new IntegerBinding is created that is bound to the ObservableIntegerValue.
        Parameters:
        value - The source ObservableIntegerValue
        Returns:
        A IntegerExpression that wraps the ObservableIntegerValue if necessary
        Throws:
        NullPointerException - if value is null
      • integerExpression

        public static <T extends NumberIntegerExpression integerExpression​(ObservableValue<T> value)
        Returns an IntegerExpression that wraps an ObservableValue. If the ObservableValue is already a IntegerExpression, it will be returned. Otherwise a new IntegerBinding is created that is bound to the ObservableValue.

        Note: this method can be used to convert an ObjectExpression or ObjectProperty of specific number type to IntegerExpression, which is essentially an ObservableValue<Number>. See sample below.

           IntegerProperty integerProperty = new SimpleIntegerProperty(1);
           ObjectProperty<Integer> objectProperty = new SimpleObjectProperty<>(2);
           BooleanBinding binding = integerProperty.greaterThan(IntegerExpression.integerExpression(objectProperty));
         
        Note: null values will be interpreted as 0
        Type Parameters:
        T - The type of Number to be wrapped
        Parameters:
        value - The source ObservableValue
        Returns:
        A IntegerExpression that wraps the ObservableValue if necessary
        Throws:
        NullPointerException - if value is null
        Since:
        JavaFX 8.0
      • asObject

        public ObjectExpression<Integer> asObject()
        Creates an ObjectExpression that holds the value of this IntegerExpression. If the value of this IntegerExpression changes, the value of the ObjectExpression will be updated automatically.
        Returns:
        the new ObjectExpression
        Since:
        JavaFX 8.0