@Override
public boolean onEnd(
final Draggable draggable, final Actor actor, final float stageX, final float stageY) {
if (actor == null || actor.getStage() == null) {
return CANCEL;
}
final Actor overActor = actor.getStage().hit(stageX, stageY, true);
if (overActor == null || overActor == actor) {
return CANCEL;
} else if (overActor.isAscendantOf(actor)) {
final DragPane dragPane = getDragPane(actor);
if (dragPane != null && dragPane.isFloating()) {
DRAG_POSITION.set(stageX, stageY);
return addToFloatingGroup(draggable, actor, dragPane);
}
return CANCEL;
}
DRAG_POSITION.set(stageX, stageY);
if (overActor instanceof DragPane) {
return addDirectlyToPane(draggable, actor, (DragPane) overActor);
}
final DragPane dragPane = getDragPane(overActor);
if (accept(actor, dragPane)) {
return addActor(draggable, actor, overActor, dragPane);
}
return CANCEL;
}
/**
* @param draggable is attached to the actor.
* @param actor dragged actor.
* @param dragPane is directly under the dragged actor. If accepts the actor, it should be added
* to its content.
* @return true if actor was accepted.
*/
protected boolean addDirectlyToPane(
final Draggable draggable, final Actor actor, final DragPane dragPane) {
if (accept(actor, dragPane)) {
if (dragPane.isFloating()) {
return addToFloatingGroup(draggable, actor, dragPane);
}
// Dragged directly to a pane. Assuming no padding, adding last:
dragPane.addActor(actor);
return APPROVE;
}
return CANCEL;
}
/**
* @param draggable is attached to the actor.
* @param actor is being dragged.
* @param overActor is directly under the dragged actor.
* @param dragPane contains the actor under dragged widget.
* @return true if actor is accepted and added to the group.
*/
protected boolean addActor(
final Draggable draggable,
final Actor actor,
final Actor overActor,
final DragPane dragPane) {
final Actor directPaneChild = getActorInDragPane(overActor, dragPane);
directPaneChild.stageToLocalCoordinates(DRAG_POSITION);
if (dragPane.isVertical() || dragPane.isVerticalFlow()) {
return addToVerticalGroup(actor, dragPane, directPaneChild);
} else if (dragPane.isHorizontal() || dragPane.isHorizontalFlow()) {
return addToHorizontalGroup(actor, dragPane, directPaneChild);
} else if (dragPane.isFloating()) {
return addToFloatingGroup(draggable, actor, dragPane);
} // This is the default behavior for grid and unknown groups:
return addToOtherGroup(actor, dragPane, directPaneChild);
}