The Google Gadget file is in the .xml format with the special MIME type "application/x-google-gadget". In eXo IDE, you can:
To create the Google Gadget within eXo IDE, do one of the following ways:
The first way: Click 
on the toolbar and then select Google Gadget from the drop-down menu.
The second way: Go to File --> New --> Google Gadget from the top menu.
The third way: Open the existing gadget from the local system by going to File --> Open Local File from the top menu.
The forth way: Upload the existing gadget directly to JCR by going to File --> Upload File... from the top menu.
For the third and forth way, you must select the MIME type: "application/x-google-gadget".
