Exemple #1
0
  /**
   * Deserializes this <code>DragSource</code>. This method first performs default deserialization.
   * Next, this object's <code>FlavorMap</code> is deserialized by using the next object in the
   * stream. If the resulting <code>FlavorMap</code> is <code>null</code>, this object's <code>
   * FlavorMap</code> is set to the default FlavorMap for this thread's <code>ClassLoader</code>.
   * Next, this object's listeners are deserialized by reading a <code>null</code>-terminated
   * sequence of 0 or more key/value pairs from the stream:
   *
   * <ul>
   *   <li>If a key object is a <code>String</code> equal to <code>dragSourceListenerK</code>, a
   *       <code>DragSourceListener</code> is deserialized using the corresponding value object and
   *       added to this <code>DragSource</code>.
   *   <li>If a key object is a <code>String</code> equal to <code>dragSourceMotionListenerK</code>,
   *       a <code>DragSourceMotionListener</code> is deserialized using the corresponding value
   *       object and added to this <code>DragSource</code>.
   *   <li>Otherwise, the key/value pair is skipped.
   * </ul>
   *
   * @see ae.java.awt.datatransfer.SystemFlavorMap#getDefaultFlavorMap
   * @since 1.4
   */
  private void readObject(ObjectInputStream s) throws ClassNotFoundException, IOException {
    s.defaultReadObject();

    // 'flavorMap' was written explicitly
    flavorMap = (FlavorMap) s.readObject();

    // Implementation assumes 'flavorMap' is never null.
    if (flavorMap == null) {
      flavorMap = SystemFlavorMap.getDefaultFlavorMap();
    }

    Object keyOrNull;
    while (null != (keyOrNull = s.readObject())) {
      String key = ((String) keyOrNull).intern();

      if (dragSourceListenerK == key) {
        addDragSourceListener((DragSourceListener) (s.readObject()));
      } else if (dragSourceMotionListenerK == key) {
        addDragSourceMotionListener((DragSourceMotionListener) (s.readObject()));
      } else {
        // skip value for unrecognized key
        s.readObject();
      }
    }
  }