How to build JavaFX styleable objects properly, that can be GC - javafx

Question

I decided to refactor my application because of hugh memory leaks in the old version. For visualization objects, I decide to not more using fxml, but Styleable interface.
So I created a class Sim Photo like this :
public class SimPhoto extends Control {
private static final String DEFAULT_CLASS_NAME = "sim-photo";
private static final Double DEFAULT_STROKE_WIDTH = 0.0;
#Getter
#Setter
private static String DEFAULT_PHOTO = "";
private StyleableStringProperty imgPath;
private StyleableIntegerProperty arcHeight;
private StyleableIntegerProperty arcWidth;
private DoubleProperty strokeWidth;
private ObjectProperty<Paint> stroke;
private ObjectProperty<Paint> fill;
public SimPhoto() {
initialize();
}
public SimPhoto(#NamedArg("imgPath") String imgPath) {
this();
this.imgPathProperty().set(imgPath);
}
//Example of init properties
public final StyleableIntegerProperty arcHeightProperty() {
if (arcHeight == null) {
arcHeight = new SimpleStyleableIntegerProperty(
StyleableProperties.ARC_WIDTH,
SimPhoto.this,
"arcWidth",
0
);
}
return arcHeight;
}
public final StringProperty imgPathProperty() {
if(imgPath == null) {
imgPath = new SimpleStyleableStringProperty(
StyleableProperties.IMG_PATH,
SimPhoto.this,
"imgPath",
"");
}
return imgPath;
}
(...)
}
In my skin class, I use binding of properties from Control Class
public class SimPhotoSkin extends SkinBase<SimPhoto> {
#Getter
private Rectangle photoFond = new Rectangle();
private Rectangle photoView = new Rectangle();
private boolean invalidate = false;
private InvalidationListener invalidListener = this::invalidated;
private ChangeListener<String> pathListener = this::pathChanged;
public SimPhotoSkin(SimPhoto control) {
super(control);
initVisualization();
initListeners();
}
private void initVisualization() {
getChildren().addAll(photoFond, photoView);
if (getSkinnable().imgPathProperty() != null) {
setNewFond(getSkinnable().getImgPath());
}
}
private void initListeners() {
photoFond.widthProperty().bind(getSkinnable().widthProperty().subtract(5));
photoFond.heightProperty().bind(getSkinnable().heightProperty().subtract(5));
photoView.widthProperty().bind(photoFond.widthProperty().subtract(photoFond.strokeWidthProperty()));
photoView.heightProperty().bind(photoFond.heightProperty().subtract(photoFond.strokeWidthProperty()));
photoView.arcWidthProperty().bind(getSkinnable().arcWidthProperty());
photoView.arcHeightProperty().bind(getSkinnable().arcHeightProperty());
photoFond.arcWidthProperty().bind(getSkinnable().arcWidthProperty());
photoFond.arcHeightProperty().bind(getSkinnable().arcHeightProperty());
photoFond.fillProperty().bind(getSkinnable().fillProperty());
photoFond.strokeProperty().bind(getSkinnable().strokeProperty());
photoFond.strokeWidthProperty().bind(getSkinnable().strokeWidthProperty());
getSkinnable().imgPathProperty().addListener(pathListener);
}
private void pathChanged(ObservableValue<? extends String> observable, String oldValue, String newValue) {
(...)
}
private void setNewFond(String path) {
(...)
}
private void invalidated(Observable observable) {
invalidate = true;
}
}
I know that object cannot been GC while exist a reference to it. So I have a big problem, because event these objects are no more used, thay cannot be GC , and in my application ,when I need creating more than 300 objects at time is a big problem.
I tried to create method clean(), that will be unbind all bidnings and listeners, but it's not realy helpful. Problem still persist.
I'm thinking about any workaround like a Manager, that will store all objects in queue and while calling will return one objects disponibles or create new one.
But this is the last possibility, if I dont find any solution for my problem, and I would like avoid this.