The way I see it, to overcome the differences between local clocks you must
use a robot or a web service that will tell you the time.
The gadget will make a request to that service whenever it is rendered by a
client. Thereafter it will just tick using javascript.

Here is an example of such a service:
http://everybodywave.appspot.com/whatisthetime.py

Javascript code that can sample it within a gadget:

     var sharedTime = null;

     var timeServerUrl =
'http://everybodywave.appspot.com/whatisthetime.py<http://everybodywave.appspot.com/whatisthetime.py>?ts='+new
Date().getTime();
     var params = {};
     params[gadgets.io.RequestParameters.CONTENT_TYPE] =
gadgets.io.ContentType.TEXT;
     gadgets.io.makeRequest(timeServerUrl, onTimeServerAnswer, params);

     function onTimeServerAnswer(answer) {
       sharedTime = parseInt(answer.text);
       startToTick();
     }

The use of the parameter "ts" in the query string of the request is needed
in order to disable the cache of makeRequest(). You can use a random number
just the same.

On Mon, Feb 8, 2010 at 3:38 AM, qMax <[email protected]> wrote:

> [sorry for fingeroughness]
>
> i'ts quite reasonable to make installer gadget instance to alarm
> robot,
> in hope that installer/moderator will not close the wave or
> disconnected beforehand.
>
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