package org.lsst.ccs.plugin.jas3.tutorial;
   
   import java.awt.BorderLayout;
   import java.awt.Component;
   import java.awt.FlowLayout;
   import java.awt.Point;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   import javax.swing.JButton;
  import javax.swing.JCheckBox;
  import javax.swing.JEditorPane;
  import javax.swing.JLabel;
  import javax.swing.JMenuItem;
  import javax.swing.JOptionPane;
  import javax.swing.JPanel;
  import javax.swing.JPopupMenu;
  import javax.swing.JTextField;
  import javax.swing.event.DocumentEvent;
  import javax.swing.event.DocumentListener;
  import org.freehep.application.mdi.ManagedPage;
  import org.freehep.application.mdi.PageContext;
  import org.freehep.swing.popup.HasPopupItems;
  
  /**
   * This is a more advanced tutorial page. This page listens for life-cycle notifications, has its
   * own popup menu, and various controls for closing itself.
   * @author tonyj
   */
  public class AdvancedTutorialPage extends JPanel implements ManagedPage, HasPopupItems {
      private PageContext pageContext;
      private JCheckBox vetoCheckBox;
      private JTextField titleField;
  
       public AdvancedTutorialPage() {
          super(new BorderLayout());
          JEditorPane text = new JEditorPane("text/html",
                  "I am an AdvancedTutorialPage. Close me using my popup menu, or by clicking the "
                  + "x in my page tab or the close button below."
                  + "<p>I print messages to standard output when I am selected or deselected which should be "
                  + "trapped and appear in a console window below."
                  + "<p>I have a custom popup menu with an extra item added."
                  + "<p>You can veto close operations, and change my title using the controls at the bottom "
                  + "of the page.");
          add(text,BorderLayout.CENTER);
          add(createControls(),BorderLayout.SOUTH);
      }
  
      @Override
      public boolean close() {
          // I am being asked to close, I can veto the request by returning false
          if (vetoCheckBox.isSelected()) {
              JOptionPane.showMessageDialog(this,"I refuse to close!");
              return false;
          }
          return true;
      }
  
      @Override
      public void setPageContext(PageContext pc) {
          this.pageContext = pc;
          titleField.setText(pc.getTitle());
          titleField.getDocument().addDocumentListener(new DocumentListener(){
  
              @Override
              public void insertUpdate(DocumentEvent e) {
                  updateTitle();
              }
  
              @Override
              public void removeUpdate(DocumentEvent e) {
                  updateTitle();
              }
  
              @Override
              public void changedUpdate(DocumentEvent e) {
                  updateTitle();
              }
  
              private void updateTitle() {
                  pageContext.setTitle(titleField.getText());
              }
          });
  
      }
  
      @Override
      public void pageSelected() {
          System.out.println("I've been selected");
      }
  
      @Override
      public void pageDeselected() {
          System.out.println("I've been deselected");
      }
  
      @Override
      public void pageIconized() {
          System.out.println("I've been iconized");
      }
 
     @Override
     public void pageDeiconized() {
         System.out.println("I've been de-iconized");
     }
 
     @Override
     public void pageClosed() {
         System.out.println("I've been closed");
     }
 
     @Override
     public JPopupMenu modifyPopupMenu(JPopupMenu menu, Component source, Point p) {
         // Add a new item to the default popup menu.
         JMenuItem extra = new JMenuItem("Extra");
         extra.addActionListener(new ActionListener(){
 
             @Override
             public void actionPerformed(ActionEvent e) {
                 JOptionPane.showMessageDialog(AdvancedTutorialPage.this,"Extra menu item selected!");
             }
         });
         // Add at top of existing menu
         menu.insert(extra, 0);
         return menu;
     }
 
     // Create some demonstration fields at the bottom of the page. (In general I recommend
     // using a GUI builder to create controls, but this is just a demo so I wanted to keep
     // things simple.
     private JPanel createControls() {
         JPanel controls = new JPanel(new FlowLayout());
         JButton closeButton = new JButton("Close");
         closeButton.addActionListener(new ActionListener(){
 
             @Override
             public void actionPerformed(ActionEvent e) {
                 pageContext.close();
             }
         });
         controls.add(closeButton);
         vetoCheckBox = new JCheckBox("Veto close");
         controls.add(vetoCheckBox);
         controls.add(new JLabel("Title:"));
         titleField = new JTextField(20);
         controls.add(titleField);
         return controls;
     }
     
 }