Hi, Igor:
>nstead of throwing the exception call error(message) on the page and
return an empty list from the model
So I register a error to the page in the model but the feedback message
doesn't show. Here is a small sample to demonstrate:
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 org.apache.wicket.PageParameters;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxFallbackButton;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
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 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"));
// clear error feedback if any
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);
}
}
Enter the word 'blowup' and the Model registers a error message to the page,
this message doesn't show.
On Tue, Mar 18, 2008 at 12:19 PM, Igor Vaynberg <[EMAIL PROTECTED]>
wrote:
> On Tue, Mar 18, 2008 at 11:48 AM, Matthew Young <[EMAIL PROTECTED]> wrote:
> > Do you mean this:
> >
> > WebMarkupContainer img = new WebMarkupContainer("thumbnail") {
> > private static final long serialVersionUID = 1L;
> > @Override protected void onComponentTag(final ComponentTag
> tag){
> > super.onComponentTag(tag);
> > tag.put("src", thumbnailUrl);
> > }
> > };
>
> yep
>
> > 2) When something goes wrong in Flickr, I throw a RuntimeException
> which
> > blows up in ListView's model.getObject(). I want to Ajax update the
> > feedbackPanel to show some error message. How can this be done?
>
> instead of throwing the exception call error(message) on the page and
> return an empty list from the model
>
> -igor
>
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