I am writing a GWT app that involves interacting with an external document in an iframe. As a proof of concept, I am trying to attach a click handler to a button.

The following works in javascript

var iframe = document.getElementById(rawJSIFrame);

var doc = iframe.contentDocument;

var body = doc.body;

var button = doc.getElementsByTagName(input).namedItem(submit);

button.onclick = function() {

    alert(Clicked!);

};

Trying to do the equivalent in GWT, I did the following:

public void addClickHandlerToSubmitButton(String buttonElementName, ClickHandler clickHandler) {

    IFrameElement iframe = IFrameElement.as(frame.getElement());

    Document frameDocument = getIFrameDocument(iframe);

    if (frameDocument != null) {

        Element buttonElement = finder(frameDocument).tag(input).name(buttonElementName).findOne();

        ElementWrapper wrapper = new ElementWrapper(buttonElement);

        HandlerRegistration handlerRegistration = wrapper.addClickHandler(clickHandler);

    }

}



private native Document getIFrameDocument(IFrameElement iframe)/*-{

        return iframe.contentDocument;

}-*/;

The following is the ElementWrapper class:

public class ElementWrapper extends Widget implements HasClickHandlers {



    public ElementWrapper(Element theElement) {

        setElement(theElement);

    }



    public HandlerRegistration addClickHandler(ClickHandler handler) {

        return addDomHandler(handler, ClickEvent.getType());

    }





}

The code to find the button works fine but the actual click event handler is not getting invoked. Has anybody had a similar issue before, and how did you resolve it?

Thanks in advance,

Tin