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Solution: eventArgs.get_type() incorrectly detects header of WebDataGrid in FireFox as cell

By , 02/07/2013 12:31 PM

If you use CSOM of Infragistics WebDataGrid you may encounter a bug in client-side event handlers. Let’s say some action is needed on double clicking of a grid cell. The handler looks something like this:

function xMyGrid_DoubleClick(sender, eventArgs) {
   if (eventArgs.get_type() == "cell") {
      //perform action
   }
}

IF condition on line 2 makes sure that action is executed only if actual grid cell is double clicked. If you double click column header, eventArgs.get_type() would return "header" and the action would be skipped.

But not in FireFox. In that browser eventArgs.get_type() returns "cell" even when header is clicked. So an additional condition is needed. Grid column header is rendered as a TH HTML element and this is what we can check:

function xMyGrid_DoubleClick(sender, eventArgs) {
   if (eventArgs.get_type() == "cell" &&  eventArgs.get_item().get_element().tagName != 'TH') {
      //perform action
   }
}

This solution works universally in all browsers.

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