Module javafx.base

Class When

java.lang.Object
javafx.beans.binding.When

public class When extends Object
Starting point for a binding that calculates a ternary expression.

A ternary expression has the basic form new When(cond).then(value1).otherwise(value2);. The expression cond needs to be a ObservableBooleanValue. Based on the value of cond, the binding contains the value of value1 (if cond.getValue() == true) or value2 (if cond.getValue() == false). The values value1 and value2 have to be of the same type. They can be constant values or implementations of ObservableValue.

Since:
JavaFX 2.0
  • Constructor Details

    • When

      public When(ObservableBooleanValue condition)
      The constructor of When.
      Parameters:
      condition - the condition of the ternary expression
  • Method Details

    • then

      Defines the ObservableNumberValue which value is returned by the ternary expression if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public When.NumberConditionBuilder then(double thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public When.NumberConditionBuilder then(float thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public When.NumberConditionBuilder then(long thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public When.NumberConditionBuilder then(int thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      Defines the ObservableBooleanValue which value is returned by the ternary expression if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public When.BooleanConditionBuilder then(boolean thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      Defines the ObservableStringValue which value is returned by the ternary expression if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public When.StringConditionBuilder then(String thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public <T> When.ObjectConditionBuilder<T> then(ObservableObjectValue<T> thenValue)
      Defines the ObservableObjectValue which value is returned by the ternary expression if the condition is true.
      Type Parameters:
      T - the type of the intermediate result
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch
    • then

      public <T> When.ObjectConditionBuilder<T> then(T thenValue)
      Defines a constant value of the ternary expression, that is returned if the condition is true.
      Type Parameters:
      T - the type of the intermediate result
      Parameters:
      thenValue - the value
      Returns:
      the intermediate result which still requires the otherwise-branch