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

Modifier and Type	Class	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

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

Method Summary

Modifier and Type	Method	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.StringConditionBuilder`	`then(String 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`.
`<T> When.ObjectConditionBuilder<T>`	`then(T thenValue)`	Defines a constant value of the ternary expression, that is returned if the condition is `true`.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

When

public When(ObservableBooleanValue condition)

The constructor of When.

Parameters:: condition - the condition of the ternary expression

Method Details

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.

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

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Documentation extracted from JavaFX API Documentation.
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