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Re: [ydn-javascript] how to attach callback to datasource used by chart?

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  • Satyam
    See: http://developer.yahoo.com/yui/datasource/#events Satyam
    Message 1 of 2 , Jul 1 8:26 AM
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      See:

      http://developer.yahoo.com/yui/datasource/#events

      Satyam

      grimholtz wrote:
      > Hi,
      >
      > I have a chart with a polling datasource. Since the chart calls
      > sendRequest() on the datasource internally, I have no option to attach
      > a callback handler (and I wouldn't want to overwrite the chart's
      > callback handler, anyway). What's the best way to get notified of new
      > data from the datasource in this situation?
      >
      > YAHOO.widget.Chart.SWFURL = "/foobar/charts.swf";
      > var ds = new YAHOO.util.DataSource("/foobar/datasource1.seam");
      > ds.responseType = YAHOO.util.DataSource.TYPE_JSON;
      > ds.responseSchema = {resultsList: "response.results", fields:
      > ["label", "value", "tooltip"], timestamp: "response.timestamp"};
      >
      > var chart = new YAHOO.widget.LineChart("chartdiv", ds, {
      > xField: "label", yField: "value", polling: 5000, dataTipFunction:
      > getDataTip, version: "9.0.115" /* required for when chart is in a
      > <form/>. */
      > });
      >
      > Thanks,
      > Eric
      >
      >
      >
      >
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