I register an error to the page in the model but the feedback message
doesn't show in FeedbackPanel. Only the error message register in
onSubmit() event handler shows. Please have a look. Thanks!
HomePage.html:
<html>
<head></head>
<span wicket:id="message">message will be here</span>
<form wicket:id="form">
<input type="text" wicket:id="word"/>
<input type="submit" value="Enter" wicket:id="submitButton"/>
</form>
<span wicket:id="feedback">FEEDBACK</span>
</html>
HomePage.java
import ...
public class HomePage extends WebPage { private static final long
serialVersionUID = 1L;
private String word;
public HomePage(final PageParameters parameters) {
add(new
FeedbackPanel("feedback").setOutputMarkupPlaceholderTag(true));
// if the word 'blowup' is entered, this model register a error
message to the page
IModel model = new Model() { private static final long
serialVersionUID = 1L;
@Override public Object getObject() {
if (word != null && word.equals("blowup")) {
word = "-b-l-o-w-u-p-";
HomePage.this.fatal("This message is from model.");
return "BAD THING HAPPENED IN MODEL";
} else {
return "The word is: \"" + (word == null ? " n u l l " :
word) + "\"";
}
}
};
add(new Label("message", model).setOutputMarkupId(true));
Form form = new Form("form", new CompoundPropertyModel(this));
add(form);
form.add(new TextField("word").setRequired(true));
AjaxFallbackButton submitButton = new
AjaxFallbackButton("submitButton", form) {
private static final long serialVersionUID = 1L;
@Override protected void onSubmit(AjaxRequestTarget target, Form
f) {
if (word != null && word.equals("blowup")) {
HomePage.this.error("This message is from onSubmit.
There should also be a message from model");
}
if (target != null) {
target.addComponent(HomePage.this.get("feedback"));
target.addComponent(HomePage.this.get("message"));
}
}
@Override protected void onError(AjaxRequestTarget target, Form
f) {
target.addComponent(HomePage.this.get("feedback"));
// show updated error feedback
}
};
form.add(submitButton);
}
}
