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)

1.	Component Hints Example
2.	Error Dialog Example
3.	Field List Validator Example
4.	Info Assist Example
5.	Input Verifier Example
6.	Validating Domain Object Example
7.	Validating On Key Typed Example
8.	Validating Presentation Model Example
9.	Validation How to Example
10.	Validation Icons Example
11.	Validation Results View Example
12.	Different styles how to indicate that a component contains invalid data
13.	how to provide input hints
14.	Different validation result views
15.	different validation times: key-typed, focus lost, commit (OK pressed)
16.	Different configurations of JFormattedTextField
17.	different configurations of JFormattedTextField: Number
18.	Different styles to mark mandatory fields

Validating On Focus Lost Example : Data Validation « Swing Components « Java

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