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Validating On Focus Lost Example

/* Code revised from Desktop Java Live: http://www.sourcebeat.com/downloads/ */ import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextField; import com.jgoodies.binding.PresentationModel; import com.jgoodies.binding.adapter.BasicComponentFactory; import com.jgoodies.binding.value.ValueModel; import com.jgoodies.forms.builder.DefaultFormBuilder; import com.jgoodies.forms.layout.CellConstraints; import com.jgoodies.forms.layout.FormLayout; import com.jgoodies.validation.ValidationCapable; import com.jgoodies.validation.ValidationResult; import com.jgoodies.validation.util.DefaultValidationResultModel; import com.jgoodies.validation.util.ValidationResultModel; import com.jgoodies.validation.util.ValidationUtils; import com.jgoodies.validation.view.ValidationResultViewFactory; public class ValidatingOnFocusLostExample extends JPanel {     private Feed feed;     private FeedPresentationModel feedPresentationModel;     public ValidatingOnFocusLostExample() {         DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));         formBuilder.setDefaultDialogBorder();         createFeed();         this.feedPresentationModel = new FeedPresentationModel(this.feed);         ValueModel nameModel = this.feedPresentationModel.getModel("name");         ValueModel feedModel = this.feedPresentationModel.getModel("feedUrl");         ValueModel siteModel = this.feedPresentationModel.getModel("siteUrl");         JTextField nameField = BasicComponentFactory.createTextField(nameModel);         JTextField feedField = BasicComponentFactory.createTextField(feedModel);         JTextField siteField = BasicComponentFactory.createTextField(siteModel);         formBuilder.append("Name:", nameField);         formBuilder.append("Site Url:", siteField);         formBuilder.append("Feed Url:", feedField);         JComponent validationResultsComponent = ValidationResultViewFactory.createReportList(this.feedPresentationModel.getValidationModel());         formBuilder.appendRow("top:30dlu:g");         CellConstraints cc = new CellConstraints();         formBuilder.add(validationResultsComponent, cc.xywh(1, formBuilder.getRow() + 1, 3, 1, "fill, fill"));         add(formBuilder.getPanel());     }     private void createFeed() {         this.feed = new Feed();         this.feed.setName("ClientJava.com");         this.feed.setSiteUrl("http://www.clientjava.com/blog");         this.feed.setFeedUrl("http://www.clientjava.com/blog/rss.xml");     }     private class FeedPresentationModel extends PresentationModel implements ValidationCapable {         private ValidationResultModel validationResultModel;         public FeedPresentationModel(Object bean) {             super(bean);             this.validationResultModel = new DefaultValidationResultModel();             initEventHandling();         }         public ValidationResultModel getValidationModel() {             return this.validationResultModel;         }         public ValidationResult validate() {             ValidationResult validationResult = new ValidationResult();             String name = (String) getModel("name").getValue();             String feedUrl = (String) getModel("feedUrl").getValue();             String siteUrl = (String) getModel("siteUrl").getValue();             if (ValidationUtils.isEmpty(name)) {                 validationResult.addError("The name field can not be blank.");             } else if (!ValidationUtils.hasBoundedLength(name, 5, 14)) {                 validationResult.addError("The name field must be between 5 and 14 characters.");             }             if (!"ClientJava.com".equals(name)) {                 validationResult.addWarning("This form prefers the feed ClientJava.com");             }             if (ValidationUtils.isEmpty(feedUrl)) {                 validationResult.addError("The feed field can not be blank.");             }             if (ValidationUtils.isEmpty(siteUrl)) {                 validationResult.addError("The site field can not be blank.");             }             return validationResult;         }         private void initEventHandling() {             PropertyChangeListener handler = new ValidationUpdateHandler();             addBeanPropertyChangeListener(handler);             getBeanChannel().addValueChangeListener(handler);         }         // Event Handling *********************************************************         class ValidationUpdateHandler implements PropertyChangeListener {             public void propertyChange(PropertyChangeEvent evt) {                 updateValidationResult();             }             private void updateValidationResult() {                 ValidationResult result = validate();                 getValidationModel().setResult(result);             }         }     }     public static void main(String[] a){       JFrame f = new JFrame("Validation on Focus Lost Example");       f.setDefaultCloseOperation(2);       f.add(new ValidatingOnFocusLostExample());       f.pack();       f.setVisible(true);     } }                     jgoodiesValidation.zip( 277 k)