javafx.beans.binding

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

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`class`	`When.BooleanConditionBuilder` An intermediate class needed while assembling the ternary expression.
`class`	`When.NumberConditionBuilder` If-then-else expression returning a number.
`class`	`When.ObjectConditionBuilder<T>` An intermediate class needed while assembling the ternary expression.
`class`	`When.StringConditionBuilder` An intermediate class needed while assembling the ternary expression.

Constructor Summary

Constructors
Constructor and Description

When(ObservableBooleanValue condition)
The constructor of When.

Constructors
Constructor and Description
`When(ObservableBooleanValue condition)` The constructor of `When`.

Method Summary

All MethodsInstance MethodsConcrete Methods
Modifier and Type	Method and Description
`When.BooleanConditionBuilder`	`then(boolean thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.
`When.NumberConditionBuilder`	`then(double thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.
`When.NumberConditionBuilder`	`then(float thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.
`When.NumberConditionBuilder`	`then(int thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.
`When.NumberConditionBuilder`	`then(long thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.
`When.BooleanConditionBuilder`	`then(ObservableBooleanValue thenValue)` Defines the `ObservableBooleanValue` which value is returned by the ternary expression if the condition is `true`.
`When.NumberConditionBuilder`	`then(ObservableNumberValue thenValue)` Defines the `ObservableNumberValue` which value is returned by the ternary expression if the condition is `true`.
`<T> When.ObjectConditionBuilder<T>`	`then(ObservableObjectValue<T> thenValue)` Defines the `ObservableObjectValue` which value is returned by the ternary expression if the condition is `true`.
`When.StringConditionBuilder`	`then(ObservableStringValue thenValue)` Defines the `ObservableStringValue` which value is returned by the ternary expression if the condition is `true`.
`When.StringConditionBuilder`	`then(String thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.
`<T> When.ObjectConditionBuilder<T>`	`then(T thenValue)` Defines a constant value of the ternary expression, that is returned if the condition is `true`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- When
```
public When(ObservableBooleanValue condition)
```
  The constructor of When.
  
  Parameters:
  
  condition - the condition of the ternary expression

Method Detail
- then
```
public When.NumberConditionBuilder then(ObservableNumberValue thenValue)
```
  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
```
public When.BooleanConditionBuilder then(ObservableBooleanValue thenValue)
```
  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
```
public When.StringConditionBuilder then(ObservableStringValue thenValue)
```
  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.
  
  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.
  
  Parameters:
  
  thenValue - the value
  
  Returns:
  
  the intermediate result which still requires the otherwise-branch

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Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Class When

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

When

Method Detail

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