setVisible (true) not showing until page refreshed

Question

I have my string variable I want to display

final String wrongPw = "Wrong Password";

My AJAX yes button:

AjaxButton yesButton = new AjaxButton("yesButton", yesNoForm) {
        private static final long serialVersionUID = -3827487963204274386L;
        @Override
        protected void onSubmit(AjaxRequestTarget target, Form form) {
            if (target != null && password.equals(getPw())) {
                answer.setAnswer(true);
                modalWindow.close(target);
            }else if(target != null && !password.equals(getPw())){
                answer.setAnswer(false);
                wrongPW.setVisible(true);
            }
        }
    };

Further down:

wrongPW.setVisible(false);
add(wrongPW);

When I hit the yes button I must refresh the page for the wrongPW to display.

How can this be done dynamically?

score 7 · Accepted Answer · edited May 23 '17 at 12:32

7

You have to add the component you want to update to the target like this:

target.add(wrongPW);

Be sure to set the markup placeholder tag on initialization of the component you want to dynamically change the visibility of, else Wicket won't find it.

wrongPW.setOutputMarkupPlaceholderTag(true);

The reasons for this are explained here: https://stackoverflow.com/a/9671796/2795423

edited May 23 '17 at 12:32

Community

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answered Mar 22 '16 at 16:53

thg

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ah bingo, i was just using `setOutputMarkupId(true);` - thanks – notAChance Mar 22 '16 at 17:06

setVisible (true) not showing until page refreshed

1 Answers1