Info Assist Example : Data Validation « Swing Components « Java

Info Assist Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.com/downloads/
*/

import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.validation.view.ValidationComponentUtils;
import com.jgoodies.validation.view.ValidationResultViewFactory;

public class InfoAssistExample extends JPanel {
    private JLabel infoLabel;

    public InfoAssistExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setDefaultDialogBorder();

        JTextField nameField = new JTextField();
        JTextField feedField = new JTextField();
        JTextField siteField = new JTextField();

        ValidationComponentUtils.setInputHint(nameField, "Enter a name.");
        ValidationComponentUtils.setInputHint(feedField, "Enter a valid rss feed url.");
        ValidationComponentUtils.setInputHint(siteField, "Enter a site url.");

        this.infoLabel = new JLabel();
        this.infoLabel.setIcon(ValidationResultViewFactory.getInfoIcon());
        this.infoLabel.setVisible(false);

        KeyboardFocusManager.getCurrentKeyboardFocusManager().addPropertyChangeListener(new FocusChangeHandler());

        formBuilder.append(this.infoLabel, 3);
        formBuilder.append("Name:", nameField);
        formBuilder.append("Site Url:", siteField);
        formBuilder.append("Feed Url:", feedField);

        add(formBuilder.getPanel());
    }

    private class FocusChangeHandler implements PropertyChangeListener {
        public void propertyChange(PropertyChangeEvent evt) {
            String propertyName = evt.getPropertyName();
            if (!"permanentFocusOwner".equals(propertyName))
                return;

            Component focusOwner = KeyboardFocusManager
                    .getCurrentKeyboardFocusManager().getFocusOwner();

            String focusHint = (focusOwner instanceof JComponent)
                    ? (String) ValidationComponentUtils
                    .getInputHint((JComponent) focusOwner)
                    : null;

            infoLabel.setText(focusHint);
            infoLabel.setVisible(focusHint != null);
        }
    }

    public static void main(String[] a){
      JFrame f = new JFrame("Info Assist Example");
      f.setDefaultCloseOperation(2);
      f.add(new InfoAssistExample());
      f.pack();
      f.setVisible(true);
    }
}

jgoodiesValidation.zip( 277 k)

1.	Component Hints Example
2.	Error Dialog Example
3.	Field List Validator Example
4.	Input Verifier Example
5.	Validating Domain Object Example
6.	Validating On Focus Lost 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

Info Assist Example : Data Validation « Swing Components « Java

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