Class ListBinding<E>

public abstract class ListBinding<E>
extends ListExpression<E>
implements Binding<ObservableList<E>>

• Property Summary

  All MethodsInstance MethodsConcrete Methods

  Type	Property and Description
  ReadOnlyBooleanProperty	empty A boolean property that is true, if the list is empty.
  ReadOnlyIntegerProperty	size An integer property that represents the size of the list.

• Constructor Summary

  Constructors

  Constructor and Description
  ListBinding()

• Method Summary

  All MethodsInstance MethodsAbstract MethodsConcrete Methods

  Modifier and Type	Method and Description
  void	addListener(ChangeListener<? super ObservableList<E>> listener) Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
  void	addListener(InvalidationListener listener) Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
  void	addListener(ListChangeListener<? super E> listener) Add a listener to this observable list.
  protected void	bind(Observable... dependencies) Start observing the dependencies for changes.
  protected abstract ObservableList<E>	computeValue() Calculates the current value of this binding.
  void	dispose() A default implementation of dispose() that is empty.
  ReadOnlyBooleanProperty	emptyProperty() A boolean property that is true, if the list is empty.
  ObservableList<E>	get() Returns the result of computeValue().
  ObservableList<?>	getDependencies() A default implementation of getDependencies() that returns an empty ObservableList.
  void	invalidate() Mark a binding as invalid.
  boolean	isValid() Checks if a binding is valid.
  protected void	onInvalidating() The method onInvalidating() can be overridden by extending classes to react, if this binding becomes invalid.
  void	removeListener(ChangeListener<? super ObservableList<E>> listener) Removes the given listener from the list of listeners, that are notified whenever the value of the ObservableValue changes.
  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(ListChangeListener<? super E> listener) Tries to removed a listener from this observable list.
  ReadOnlyIntegerProperty	sizeProperty() An integer property that represents the size of the list.
  String	toString() Returns a string representation of this ListBinding object.
  protected void	unbind(Observable... dependencies) Stop observing the dependencies for changes.

  • Methods inherited from class javafx.beans.binding.ListExpression

    add, add, addAll, addAll, addAll, asString, clear, contains, containsAll, get, getSize, getValue, indexOf, isEmpty, isEqualTo, isNotEqualTo, isNotNull, isNull, iterator, lastIndexOf, listExpression, listIterator, listIterator, remove, remove, remove, removeAll, removeAll, retainAll, retainAll, set, setAll, setAll, size, subList, toArray, toArray, valueAt, valueAt

  • Methods inherited from class java.lang.Object

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

  • Methods inherited from interface javafx.beans.value.ObservableValue

    getValue

  • Methods inherited from interface javafx.collections.ObservableList

    filtered, sorted, sorted

  • Methods inherited from interface java.util.List

    equals, hashCode, replaceAll, sort, spliterator

  • Methods inherited from interface java.util.Collection

    parallelStream, removeIf, stream

  • Methods inherited from interface java.lang.Iterable

    forEach

• Property Detail

  • size

    public ReadOnlyIntegerProperty sizeProperty

    Specified by:

    sizeProperty in class ListExpression<E>

    Returns:

    the property

  • empty

    public ReadOnlyBooleanProperty emptyProperty

    Specified by:

    emptyProperty in class ListExpression<E>

• Constructor Detail

  • ListBinding

    public ListBinding()

• Method Detail

  • sizeProperty

    public ReadOnlyIntegerProperty sizeProperty()

    Description copied from class: ListExpression
    An integer property that represents the size of the list.

    Specified by:

    sizeProperty in class ListExpression<E>

    Returns:

    the property

  • emptyProperty

    public ReadOnlyBooleanProperty emptyProperty()

    Description copied from class: ListExpression
    A boolean property that is true, if the list is empty.

    Specified by:

    emptyProperty in class ListExpression<E>

  • 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.

    Specified by:

    addListener in interface Observable

    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.

    Specified by:

    removeListener in interface Observable

    Parameters:

    listener - The listener to remove

    See Also:

    Observable.addListener(InvalidationListener)

  • addListener

    public void addListener(ChangeListener<? super ObservableList<E>> 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.

    Specified by:

    addListener in interface ObservableValue<ObservableList<E>>

    Parameters:

    listener - The listener to register

    See Also:

    ObservableValue.removeListener(ChangeListener)

  • removeListener

    public void removeListener(ChangeListener<? super ObservableList<E>> 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.

    Specified by:

    removeListener in interface ObservableValue<ObservableList<E>>

    Parameters:

    listener - The listener to remove

    See Also:

    ObservableValue.addListener(ChangeListener)

  • addListener

    public void addListener(ListChangeListener<? super E> listener)

    Description copied from interface: ObservableList
    Add a listener to this observable list.

    Specified by:

    addListener in interface ObservableList<E>

    Parameters:

    listener - the listener for listening to the list changes

  • removeListener

    public void removeListener(ListChangeListener<? super E> listener)

    Description copied from interface: ObservableList
    Tries to removed a listener from this observable list. If the listener is not attached to this list, nothing happens.

    Specified by:

    removeListener in interface ObservableList<E>

    Parameters:

    listener - a listener to remove

  • bind

    protected final void bind(Observable... dependencies)

    Start observing the dependencies for changes. If the value of one of the dependencies changes, the binding is marked as invalid.

    Parameters:

    dependencies - the dependencies to observe

  • unbind

    protected final void unbind(Observable... dependencies)

    Stop observing the dependencies for changes.

    Parameters:

    dependencies - the dependencies to stop observing

  • dispose

    public void dispose()

    A default implementation of dispose() that is empty.

    Specified by:

    dispose in interface Binding<ObservableList<E>>

  • getDependencies

    public ObservableList<?> getDependencies()

    A default implementation of getDependencies() that returns an empty ObservableList.

    Specified by:

    getDependencies in interface Binding<ObservableList<E>>

    Returns:

    an empty ObservableList

  • get

    public final ObservableList<E> get()

    Returns the result of computeValue(). The method computeValue() is only called if the binding is invalid. The result is cached and returned if the binding did not become invalid since the last call of get().

    Specified by:

    get in interface ObservableObjectValue<ObservableList<E>>

    Returns:

    the current value

  • onInvalidating

    protected void onInvalidating()

    The method onInvalidating() can be overridden by extending classes to react, if this binding becomes invalid. The default implementation is empty.

  • invalidate

    public final void invalidate()

    Description copied from interface: Binding
    Mark a binding as invalid. This forces the recalculation of the value of the Binding next time it is request.

    Specified by:

    invalidate in interface Binding<ObservableList<E>>

  • isValid

    public final boolean isValid()

    Description copied from interface: Binding
    Checks if a binding is valid.

    Specified by:

    isValid in interface Binding<ObservableList<E>>

    Returns:

    true if the Binding is valid, false otherwise

  • computeValue

    protected abstract ObservableList<E> computeValue()

    Calculates the current value of this binding.

    Classes extending ListBinding have to provide an implementation of computeValue.

    Returns:

    the current value

  • toString

    public String toString()

    Returns a string representation of this ListBinding object.

    Overrides:

    toString in class Object

    Returns:

    a string representation of this ListBinding object.