DragGestureRecognizer.java 文件源码

/**
 * Deserializes this <code>DragGestureRecognizer</code>. This method first
 * performs default deserialization for all non-<code>transient</code>
 * fields. This object's <code>DragGestureListener</code> is then
 * deserialized as well by using the next object in the stream.
 *
 * @since 1.4
 */
@SuppressWarnings("unchecked")
private void readObject(ObjectInputStream s)
    throws ClassNotFoundException, IOException
{
    ObjectInputStream.GetField f = s.readFields();

    DragSource newDragSource = (DragSource)f.get("dragSource", null);
    if (newDragSource == null) {
        throw new InvalidObjectException("null DragSource");
    }
    dragSource = newDragSource;

    component = (Component)f.get("component", null);
    sourceActions = f.get("sourceActions", 0) & (DnDConstants.ACTION_COPY_OR_MOVE | DnDConstants.ACTION_LINK);
    events = (ArrayList<InputEvent>)f.get("events", new ArrayList<>(1));

    dragGestureListener = (DragGestureListener)s.readObject();
}