How to add button in HeaderSpan of SmartGWT

Question

I want to add a button to the HeaderSpan of ListGrid in SmartGWT. I tried using the \'HeaderSpan.setAttribute((String property, Object value)) method but it did not work. Below

Answer 1

I'm testing it, as I need to put a Calendar in a HeaderSpan. Thanks for sharing your idea, it's of great help, although it took a while to set the correct imports.

A note : the setHeaderSpanButtons() method will only work if the datasource of the ListGrid is set. If it's not, no header at all is shown.

An improvement : you can add a break in the loop, no need to loop the whole NodeList:

if(element.getInnerHTML().toString().equals("Identification")) {
            element.setInnerHTML(null);
            element.insertFirst(createHeaderSpanContents());
            break;
        }

A question : what is the purpose of this line:

this.getAttribute("headerSpans");

And finally, it doesn't work for me - the span stays always as text "Identification". Any suggestions?

Thanks.