Module javafx.base

Package javafx.beans.property

Class StringPropertyBase

java.lang.Object

javafx.beans.binding.StringExpression

javafx.beans.property.ReadOnlyStringProperty

javafx.beans.property.StringProperty

javafx.beans.property.StringPropertyBase

All Implemented Interfaces:

Observable, Property<String>, ReadOnlyProperty<String>, ObservableObjectValue<String>, ObservableStringValue, ObservableValue<String>, WritableObjectValue<String>, WritableStringValue, WritableValue<String>

Direct Known Subclasses:

SimpleStringProperty, StyleableStringProperty

public abstract class StringPropertyBase
extends StringProperty

The class StringPropertyBase is the base class for a property wrapping a String value. It provides all the functionality required for a property except for the ReadOnlyProperty.getBean() and ReadOnlyProperty.getName() methods, which must be implemented by extending classes.

Since:

JavaFX 2.0

See Also:

• StringProperty

Constructor Summary

Constructors

Constructor	Description
StringPropertyBase()	The constructor of the StringPropertyBase.
StringPropertyBase(String initialValue)	The constructor of the StringPropertyBase.

Method Summary

Modifier and Type	Method	Description
void	addListener(InvalidationListener listener)	Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	addListener(ChangeListener<? super String> listener)	Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
void	bind(ObservableValue<? extends String> newObservable)	Create a unidirection binding for this Property.
protected void	fireValueChangedEvent()	Sends notifications to all attached InvalidationListeners and ChangeListeners.
String	get()	Get the wrapped value.
protected void	invalidated()	The method invalidated() can be overridden to receive invalidation notifications.
boolean	isBound()	Can be used to check, if a Property is bound.
void	removeListener(InvalidationListener listener)	Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
void	removeListener(ChangeListener<? super String> listener)	Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.
void	set(String newValue)	Set the wrapped value.
String	toString()	Returns a string representation of this StringPropertyBase object.
void	unbind()	Remove the unidirectional binding for this Property.

Methods declared in class javafx.beans.property.StringProperty

bindBidirectional, bindBidirectional, bindBidirectional, setValue, unbindBidirectional, unbindBidirectional

Methods declared in class javafx.beans.binding.StringExpression

concat, getValue, getValueSafe, greaterThan, greaterThan, greaterThanOrEqualTo, greaterThanOrEqualTo, isEmpty, isEqualTo, isEqualTo, isEqualToIgnoreCase, isEqualToIgnoreCase, isNotEmpty, isNotEqualTo, isNotEqualTo, isNotEqualToIgnoreCase, isNotEqualToIgnoreCase, isNotNull, isNull, length, lessThan, lessThan, lessThanOrEqualTo, lessThanOrEqualTo, stringExpression

Methods declared in class java.lang.Object

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

Methods declared in interface javafx.beans.value.ObservableValue

getValue

Methods declared in interface javafx.beans.property.ReadOnlyProperty

getBean, getName

Methods declared in interface javafx.beans.value.WritableValue

getValue

Constructor Details

StringPropertyBase

public StringPropertyBase()

The constructor of the StringPropertyBase.

StringPropertyBase

public StringPropertyBase(String initialValue)

The constructor of the StringPropertyBase.

Parameters:

initialValue - the initial value of the wrapped String

Method Details

addListener

public void addListener(InvalidationListener listener)

Description copied from interface: Observable

Adds an InvalidationListener which will be notified whenever the Observable becomes invalid. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.

Note that the same actual InvalidationListener instance may be safely registered for different Observables.

The Observable stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakInvalidationListener avoid this situation.

Parameters:

listener - The listener to register

See Also:

• Observable.removeListener(InvalidationListener)

removeListener

public void removeListener(InvalidationListener listener)

Description copied from interface: Observable

Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.

If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.

Parameters:

listener - The listener to remove

See Also:

• Observable.addListener(InvalidationListener)

addListener

public void addListener(ChangeListener<? super String> listener)

Description copied from interface: ObservableValue

Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.

Note that the same actual ChangeListener instance may be safely registered for different ObservableValues.

The ObservableValue stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakChangeListener avoid this situation.

Parameters:

listener - The listener to register

See Also:

• ObservableValue.removeListener(ChangeListener)

removeListener

public void removeListener(ChangeListener<? super String> listener)

Description copied from interface: ObservableValue

Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.

If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.

Parameters:

listener - The listener to remove

See Also:

• ObservableValue.addListener(ChangeListener)

fireValueChangedEvent

protected void fireValueChangedEvent()

Sends notifications to all attached InvalidationListeners and ChangeListeners. This method is called when the value is changed, either manually by calling set(java.lang.String) or in case of a bound property, if the binding becomes invalid.

invalidated

protected void invalidated()

The method invalidated() can be overridden to receive invalidation notifications. This is the preferred option in Objects defining the property, because it requires less memory. The default implementation is empty.

get

public String get()

Get the wrapped value. This must be identical to the value returned from WritableValue.getValue().

This method exists only to align WritableObjectValue API with WritableBooleanValue and subclasses of WritableNumberValue

Returns:

The current value

set

public void set(String newValue)

Set the wrapped value. Should be equivalent to WritableValue.setValue(java.lang.Object)

Parameters:

newValue - The new value

See Also:

• WritableObjectValue.get()

isBound

public boolean isBound()

Can be used to check, if a Property is bound.

Returns:

true if the Property is bound, false otherwise

See Also:

• Property.bind(javafx.beans.value.ObservableValue)

bind

public void bind(ObservableValue<? extends String> newObservable)

Create a unidirection binding for this Property.

Note that JavaFX has all the bind calls implemented through weak listeners. This means the bound property can be garbage collected and stopped from being updated.

Parameters:

newObservable - The observable this Property should be bound to.

unbind

public void unbind()

Remove the unidirectional binding for this Property. If the Property is not bound, calling this method has no effect.

See Also:

• Property.bind(javafx.beans.value.ObservableValue)

toString

public String toString()

Returns a string representation of this StringPropertyBase object.

Overrides:

toString in class StringProperty

Returns:

a string representation of this StringPropertyBase object.