package net.javagarage.demo.ui;
/**<p>
 * Shows a JTabbedPane, which allows you to
 * choose between pages with a tab, like
 * paper manila folders.
 *
 * </p>
 * @author Eben Hewitt
 **/

import javax.swing.JTabbedPane;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JComponent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.SwingUtilities;
import java.net.MalformedURLException;
import java.net.URL;

public class TabbedPaneDemo extends JPanel {
static URL imageURL;

public TabbedPaneDemo() {
//remember that the call to super()
//MUST be first call in constructor
super(new GridLayout(1, 1));
//create the tabbed pane
JTabbedPane tabbedPane = new JTabbedPane();

/*remember that the present working directory
will be above your classes directory.
so if this class is in
C:\projectsgarage
etjavagarageetc...
Put the image you want in C:\projectsgarage.
*/

String imagePath = System.getProperty("user.dir") +
"\kitty.gif";
//get the image that will prefix each tab
ImageIcon icon = new ImageIcon(imagePath);

//create a new panel using our custom
//utility class
JComponent noodlePanel = new TabPanel("prissy
one").getPanel();
//add a tab to the panel
tabbedPane.addTab("Noodlehead", icon, noodlePanel);

JComponent doodlePanel = new
TabPanel("princess").getPanel();
tabbedPane.addTab("Doodlehead", icon, doodlePanel);

JComponent mrPanel = new TabPanel("the boy
kitty").getPanel();
tabbedPane.addTab("Mr. Apache Tomcat", icon, mrPanel);
//add the tabbed pane
add(tabbedPane);

//scrolling tabs makes small navigation arrows for
//use when all tabs do not fit on the screen
tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_
LAYOUT);
}


//Makes the icon of the image file we provide, to
//include on each tab. If no file is specified or
//found, null is returned, and no icon is included.
protected static ImageIcon createIcon(String path) {
try {
imageURL = new URL(path);
return new ImageIcon(imageURL);
} catch (MalformedURLException me){
System.err.println("This is not an acceptable URL: " +
path + " 
" + me.getMessage());
return null;
}
}

/**
 * Put the application on the event-handling thread
 * and start it up.
 */
private static void launch() {
//must be called first, and static-ly
JFrame.setDefaultLookAndFeelDecorated(true);

//Create and set up the window.
JFrame frame = new JFrame("Tabbed Pane App");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//create a new instance of this class and
//make the contents visible
JComponent newContentPane = new TabbedPaneDemo();
newContentPane.setOpaque(true);
frame.getContentPane().add(newContentPane,
BorderLayout.CENTER);
//show it
frame.pack();
frame.setVisible(true);
}

public static void main(String[] args) {
//run the app as recommended
SwingUtilities.invokeLater(new Runnable() {
public void run() {
launch();
}
});
}
}

/**
 * Class to encapsulate the business of creating panels
 * that hold the content of the application (in this
 * case just a line of text). The tabs tack on to the
 * top of these panels.
 */
class TabPanel {
JPanel panel;
JLabel filler;
public TabPanel(String text){
panel = new JPanel(false);
filler = new JLabel(text);
filler.setHorizontalAlignment(JLabel.CENTER);
panel.setPreferredSize(new Dimension(250,100));
panel.add(filler);
}

public JComponent getPanel() {
return panel;
}
}

//end TabbedPaneDemo