GWT back button browser

Question

For example current page is www.google.com. But I typed a different website address in address bar and clicked. This site has fully GWT code.

But I like to back to t

Answer 1

try this it will work

Event.addNativePreviewHandler(new Event.NativePreviewHandler() {

        @Override
        public void onPreviewNativeEvent(final NativePreviewEvent event) {
            if (event.getTypeInt() == Event.ONKEYDOWN) {
                if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_BACKSPACE) {
                    Element element = Element.as(event.getNativeEvent().getEventTarget());

                    String tagName = element.getTagName();

                    System.out.println(tagName);

                    // Add checks for other input controls
                    if (!tagName.equalsIgnoreCase("INPUT") 
                                 && !tagName.equalsIgnoreCase("TEXTAREA")) {

                        boolean result = Window.confirm("Are you sure?");
                        if (!result) {
                            event.cancel();
                        }
                    }
                }
            }
        }
    });