How to simulate a click for a GWT button using fireEvent

[Privat]

I am trying to simulate a mouse click event on GWT (Google Web Toolkit) Application in <=IE8 (using fireEvent, not dispatchEvent)

A sample custom button can be found here: http://samples.gwtproject.org/samples/Showcase/Showcase.html#!CwCustomButton (The toggle button is easiest to see if the click was processed)

The major boilerplate for simulating the click can be found here: http://stackoverflow.com/a/6158050 (This is where I got the simulate function used below)

I have been able to successfully simulate the click event by using the following commands for IE9+ (in this case simulate used dispatchEvent)

simulate(document.getElementById("gwt-debug-cwCustomButton-toggle-normal"), "mouseover");
simulate(document.getElementById("gwt-debug-cwCustomButton-toggle-normal"), "mousedown");
simulate(document.getElementById("gwt-debug-cwCustomButton-toggle-normal"), "mouseup");

In my application the fireEvent fails, because GWT's $wnd.event is null. (Line: 117, https://github.com/stephenh/google-web-toolkit/blob/master/user/src/com/google/gwt/user/client/impl/DOMImplTrident.java)

If there is no way to simulate the click with plain JS, then is there a way to use GWT's EventDispatcher to simulate the click?

[natan clara]

I have use this.

this.getComo().addKeyPressHandler(new KeyPressHandler() {
            @Override
            public void onKeyPress(KeyPressEvent event) {
                int teclado = event.getNativeEvent().getKeyCode();
                if ((teclado == KeyCodes.KEY_ENTER)) {
                    getEntrar().fireEvent(new GwtEvent<ClickHandler>() {
                        @Override
                        protected void dispatch(ClickHandler handler) {
                            handler.onClick(null);
                        }

                        @Override
                        public com.google.gwt.event.shared.GwtEvent.Type<ClickHandler> getAssociatedType() {
                            return ClickEvent.getType();
                        }
                    });

                }
            }
        });

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[Privat]

Hello Nantanael,

You have provided GWT Java code. You might have misunderstood.
I wish to fire the event in JavaScript, on the front-end. (The compiled code)

I have no access to the GWT code. I simply want to manipulate the front end (The compiled code)

What I am asking requires knowledge of how the GWT event bus operates in IE8.

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