public void onMouseMove(MouseMoveEvent event) {
if (isMouseDown()) {
setDragging(true);
updateCSS();
model.setX(event.getX() + model.getX() - dragStartX);
model.setY(event.getY() + model.getY() - dragStartY);
onUpdateInModel();
int clientX = event.getClientX();
int clientY = event.getClientY();
boolean outsideWindow =
clientX < 0
|| clientY < 0
|| clientX > Window.getClientWidth()
|| clientY > Window.getClientHeight();
if (outsideWindow) {
parent.save(model, true);
setDragging(false);
}
}
event.preventDefault();
}
