This widget type displays a draggable icon corresponding to a document.

It requires the following fields configuration:

• first field maps the document model, the jsf method nxd:iconPath will be used to provide its icon
• second field maps the unique id to be used as drag/drop identified (e.g. the document model id)
• third field maps the icon title (can be the document model type)
• fourth field maps a boolean stating whether the widget displays a droppable zone (e.g. if document is folderish)