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January 29, 2018 04:23
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Displaying FeedbackMessages dynamically in Wicket
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| <!DOCTYPE html> | |
| <html xmlns:wicket="http://wicket.apache.org"> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> | |
| <title>Template</title> | |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.5.0/css/font-awesome.min.css"/> | |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/ionicons/2.0.1/css/ionicons.min.css"/> | |
| <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,300italic,400italic,600italic"/> | |
| <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" /> | |
| <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/admin-lte/2.4.2/css/AdminLTE.min.css"/> | |
| <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/admin-lte/2.4.2/css/skins/_all-skins.min.css"/> | |
| </head> | |
| <body class="hold-transition skin-green layout-top-nav"> | |
| <div class="content-wrapper"> | |
| <section class="content-header"> | |
| <h1>FeedbackMessage Handler <small>Example with Apache Wicket</small></h1> | |
| </section> | |
| <section class="content"> | |
| <div class="row"> | |
| <div class="col-md-12"> | |
| <div class="box box-success"> | |
| <div class="box-body"> | |
| <wicket:enclosure> | |
| <div class="alert alert-success alert-dismissible"> | |
| <button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button> | |
| <h4><i class="icon fa fa-check"></i> Bingo, form submitted!</h4> | |
| <div wicket:id="successMessages"></div> | |
| </div> | |
| </wicket:enclosure> | |
| <wicket:enclosure> | |
| <div class="alert alert-danger alert-dismissible"> | |
| <button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button> | |
| <h4><i class="icon fa fa-ban"></i> Error on form validation!</h4> | |
| <div wicket:id="errorMessages"></div> | |
| </div> | |
| </wicket:enclosure> | |
| <form wicket:id="SimpleForm" class="form-horizontal"> | |
| <div class="form-group"> | |
| <label class="col-sm-2 control-label">Your name</label> | |
| <div class="col-sm-10"> | |
| <input wicket:id="name" type="text" class="form-control"> | |
| </div> | |
| </div> | |
| <div class="box-footer col-md-12"> | |
| <button type="submit" class="btn bg-gray pull-right"><i class="fa fa-check"></i> Submit</button> | |
| </div> | |
| </form> | |
| </div> | |
| </div> | |
| </div> | |
| </div> | |
| </section> | |
| </div> | |
| <script src="http://code.jquery.com/jquery-3.3.1.min.js"></script> | |
| <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> | |
| </body> | |
| </html> |
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| import org.apache.wicket.feedback.ErrorLevelFeedbackMessageFilter; | |
| import org.apache.wicket.feedback.FeedbackCollector; | |
| import org.apache.wicket.feedback.FeedbackMessage; | |
| import org.apache.wicket.feedback.IFeedbackMessageFilter; | |
| import org.apache.wicket.markup.html.WebPage; | |
| 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.Model; | |
| /** | |
| * | |
| * @author tomurlh | |
| */ | |
| public class FormMessagesHandlerExample extends WebPage { | |
| public FormMessagesHandlerExample() { | |
| FeedbackCollector collector = new FeedbackCollector(this); | |
| ExactErrorLevelFilter successFilter = new ExactErrorLevelFilter(FeedbackMessage.SUCCESS); | |
| ExactErrorLevelFilter errorFilter = new ExactErrorLevelFilter(FeedbackMessage.ERROR); | |
| add(new SimpleForm("SimpleForm")); | |
| add(new FeedbackPanel("successMessages", successFilter) { | |
| @Override public boolean isVisible() { | |
| return !collector.collect(successFilter).isEmpty(); | |
| } | |
| }); | |
| add(new FeedbackPanel("errorMessages", errorFilter) { | |
| @Override public boolean isVisible() { | |
| return !collector.collect(errorFilter).isEmpty(); | |
| } | |
| }); | |
| } | |
| class SimpleForm extends Form { | |
| public SimpleForm(String id) { | |
| super(id); | |
| add(new TextField("name", Model.of("")).setRequired(true)); | |
| } | |
| @Override | |
| protected void onSubmit() { | |
| success("Your name is: " + getPage().get("SimpleForm:name").getDefaultModelObject()); | |
| } | |
| } | |
| class ExactErrorLevelFilter implements IFeedbackMessageFilter { | |
| private int errorLevel; | |
| public ExactErrorLevelFilter(int errorLevel) { | |
| this.errorLevel = errorLevel; | |
| } | |
| public boolean accept(FeedbackMessage message) { | |
| return message.getLevel() == errorLevel; | |
| } | |
| } | |
| } |
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