javafx.beans.property.ReadOnlyListPropertyBase Maven / Gradle / Ivy
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package javafx.beans.property;
import com.sun.javafx.binding.ListExpressionHelper;
import javafx.beans.InvalidationListener;
import javafx.beans.value.ChangeListener;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
/**
* Base class for all readonly properties wrapping an
* {@link javafx.collections.ObservableList}.
* This class provides a default implementation to attach listener.
*
* @param the list element type
* @see ReadOnlyListProperty
* @since JavaFX 2.1
*/
public abstract class ReadOnlyListPropertyBase extends ReadOnlyListProperty {
private ListExpressionHelper helper;
/**
* Creates a default {@code ReadOnlyListPropertyBase}.
*/
public ReadOnlyListPropertyBase() {
}
@Override
public void addListener(InvalidationListener listener) {
helper = ListExpressionHelper.addListener(helper, this, listener);
}
@Override
public void removeListener(InvalidationListener listener) {
helper = ListExpressionHelper.removeListener(helper, listener);
}
@Override
public void addListener(ChangeListener> listener) {
helper = ListExpressionHelper.addListener(helper, this, listener);
}
@Override
public void removeListener(ChangeListener> listener) {
helper = ListExpressionHelper.removeListener(helper, listener);
}
@Override
public void addListener(ListChangeListener listener) {
helper = ListExpressionHelper.addListener(helper, this, listener);
}
@Override
public void removeListener(ListChangeListener listener) {
helper = ListExpressionHelper.removeListener(helper, listener);
}
/**
* This method needs to be called if the reference to the
* {@link javafx.collections.ObservableList} changes.
*
* It sends notifications to all attached
* {@link javafx.beans.InvalidationListener InvalidationListeners},
* {@link javafx.beans.value.ChangeListener ChangeListeners}, and
* {@link javafx.collections.ListChangeListener}.
*
* This method needs to be called, if the value of this property changes.
*/
protected void fireValueChangedEvent() {
ListExpressionHelper.fireValueChangedEvent(helper);
}
/**
* This method needs to be called if the content of the referenced
* {@link javafx.collections.ObservableList} changes.
*
* Sends notifications to all attached
* {@link javafx.beans.InvalidationListener InvalidationListeners},
* {@link javafx.beans.value.ChangeListener ChangeListeners}, and
* {@link javafx.collections.ListChangeListener}.
*
* This method is called when the content of the list changes.
*
* @param change the change that needs to be propagated
*/
protected void fireValueChangedEvent(ListChangeListener.Change change) {
ListExpressionHelper.fireValueChangedEvent(helper, change);
}
}