Question

I am trying to create a button that prints the current browser window.

This is my current code, that uses (or at least it tries to use) JSNI:

private Button print = new Button(constants.print(), new ClickHandler() {
    @Override
    public void onClick(final ClickEvent event) {
        /*-{
            if ($wnd.print) { 
                $wnd.print(); 
                return true; 
            } else { 
                return false; 
            } 
        }-*/
    }           
});

But when I click the button, nothing happens. It is my first GWT application, so I am not sure about how to implement it.

Answer 1

new Button(constants.print(),  new ClickHandler() {
        @Override
        public void onClick(final ClickEvent event) {
           print();
        }

        private native boolean print( ) /*-{
            if ($wnd.print) { 
                 $wnd.print(); 
                 return true; 
            } else { 
                 return false; 
            } 
        }-*/;  });

Should work! Always place JSNI within a native method.