javafx.beans.property.ReadOnlyStringPropertyBase Maven / Gradle / Ivy
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package javafx.beans.property;
import javafx.beans.InvalidationListener;
import javafx.beans.value.ChangeListener;
import com.sun.javafx.binding.ExpressionHelper;
/**
* Base class for all readonly properties wrapping a {@code String}. This class provides a default
* implementation to attach listener.
*
* @see ReadOnlyStringProperty
* @since JavaFX 2.0
*/
public abstract class ReadOnlyStringPropertyBase extends ReadOnlyStringProperty {
ExpressionHelper helper;
/**
* Creates a default {@code ReadOnlyStringPropertyBase}.
*/
public ReadOnlyStringPropertyBase() {
}
@Override
public void addListener(InvalidationListener listener) {
helper = ExpressionHelper.addListener(helper, this, listener);
}
@Override
public void removeListener(InvalidationListener listener) {
helper = ExpressionHelper.removeListener(helper, listener);
}
@Override
public void addListener(ChangeListener listener) {
helper = ExpressionHelper.addListener(helper, this, listener);
}
@Override
public void removeListener(ChangeListener listener) {
helper = ExpressionHelper.removeListener(helper, listener);
}
/**
* Sends notifications to all attached
* {@link javafx.beans.InvalidationListener InvalidationListeners} and
* {@link javafx.beans.value.ChangeListener ChangeListeners}.
*
* This method needs to be called, if the value of this property changes.
*/
protected void fireValueChangedEvent() {
ExpressionHelper.fireValueChangedEvent(helper);
}
}