FileListPanel.java 文件源码

private void registerDndHandlers()
{
    new DragSource().createDefaultDragGestureRecognizer(list, DnDConstants.ACTION_COPY, new DragGestureListener()
    {
        @Override
        public void dragGestureRecognized(DragGestureEvent dge)
        {
            Transferable t = new FileInfoTransferable(getSelectedFile());
            dge.startDrag(DragSource.DefaultMoveDrop, t);
        }
    });

    DnDUtils.registerDropHandler(this, dropHandlers, new HoverHandler()
    {
        @Override
        public void hovering(DropTargetDragEvent e)
        {
            FileInfo fi = getFileUnderMouseCursor();
            if( fi == null )
            {
                int i = getListIndexUnderPoint(e.getLocation());
                if( i >= 0 )
                {
                    fi = model.get(i);
                }
            }

            if( fi != null && fi.isDirectory() )
            {
                list.setSelectedValue(fi, true);
            }
            else
            {
                list.getSelectionModel().clearSelection();
            }
        }
    });
}