Module javafx.base
Package javafx.beans.property

Class ReadOnlySetPropertyBase<E>

java.lang.Object
javafx.beans.binding.SetExpression<E>
javafx.beans.property.ReadOnlySetProperty<E>
javafx.beans.property.ReadOnlySetPropertyBase<E>
Type Parameters:
E - the type of the Set elements
All Implemented Interfaces:
Iterable<E>, Collection<E>, Set<E>, Observable, ReadOnlyProperty<ObservableSet<E>>, ObservableObjectValue<ObservableSet<E>>, ObservableSetValue<E>, ObservableValue<ObservableSet<E>>, ObservableSet<E>
public abstract class ReadOnlySetPropertyBase<E>
extends ReadOnlySetProperty<E>
Base class for all readonly properties wrapping an ObservableSet. This class provides a default implementation to attach listener.
Since:
JavaFX 2.1
See Also:
ReadOnlySetProperty

  • Constructor Details

    • ReadOnlySetPropertyBase

      public ReadOnlySetPropertyBase()
      Creates a default ReadOnlySetPropertyBase.

  • 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 ObservableSet<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.

      Parameters:
      listener - The listener to register
      See Also:
      ObservableValue.removeListener(ChangeListener)

    • removeListener

      public void removeListener​(ChangeListener<? super ObservableSet<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.

      Parameters:
      listener - The listener to remove
      See Also:
      ObservableValue.addListener(ChangeListener)

    • addListener

      public void addListener​(SetChangeListener<? super E> listener)
      Description copied from interface: ObservableSet
      Add a listener to this observable set.
      Parameters:
      listener - the listener for listening to the set changes

    • removeListener

      public void removeListener​(SetChangeListener<? super E> listener)
      Description copied from interface: ObservableSet
      Tries to removed a listener from this observable set. If the listener is not attached to this list, nothing happens.
      Parameters:
      listener - a listener to remove

    • fireValueChangedEvent

      protected void fireValueChangedEvent()
      This method needs to be called if the reference to the ObservableSet changes. It sends notifications to all attached InvalidationListeners, ChangeListeners, and SetChangeListener. This method needs to be called, if the value of this property changes.

    • fireValueChangedEvent

      protected void fireValueChangedEvent​(SetChangeListener.Change<? extends E> change)
      This method needs to be called if the content of the referenced ObservableSet changes. Sends notifications to all attached InvalidationListeners, ChangeListeners, and SetChangeListener. This method is called when the content of the list changes.
      Parameters:
      change - the change that needs to be propagated