choicecardpanel.java

Java邮箱

package Email.awt;


import java.awt.*;
import java.awt.event.*;
import Email.awt.event.*;

public class ChoiceCardPanel extends OutlinedPanel implements ItemSelectable {
  private Choice pageNames;
  private Panel pages;

  public int getSelectedIndex() { 
    return pageNames.getSelectedIndex(); 
    }

  public String getSelectedItem() { 
    return pageNames.getSelectedItem();
    }

  public void addItemListener(ItemListener l) { 
    pageNames.addItemListener(l);
    }

  public Object[] getSelectedObjects() { 
    return pageNames.getSelectedObjects();
    }

  public void removeItemListener(ItemListener l){ 
    pageNames.removeItemListener(l); 
    }

  /** Switch to named card.
    * @see java.awt.CardLayout#show
    */
  public void select(String name) {
    ( (CardLayout) pages.getLayout() ).show(pages,name);
  }

  public void select(int pos) {
    if ( pos < pageNames.getItemCount() )
      select( pageNames.getItem(pos) );
  }

  /** Construct ChoiceCardPanel. */
  public ChoiceCardPanel(String title) {
    super(title);
    setLayout( new BorderLayout() );
    pageNames = new Choice();
    pageNames.addItemListener
      (
        new ItemAdapter() {
          public void itemStateChanged(ItemEvent e) {
            if ( e.getStateChange() == ItemEvent.SELECTED )
              select( (String)e.getItem() );
          }
        }
      );
    super.add("North",pageNames);
    pages = new Panel();
    //Checkbox cb = new Checkbox("one");
    //pages.add("West",cb);
    pages.setLayout( new CardLayout() );
    super.add("Center",pages);
  }

  /** Add named component.
    * @param name name of component which appears in Choice
    * @param comp component to appear when chosen
    */
  public Component add(String name, Component comp) {
    pageNames.addItem(name);
    pages.add(name,comp);
    return comp;
  }

  public Component add(Component comp, int index) {
  	Checkbox cb = new Checkbox("one");
    //pages.add("West",cb);
    
    if ( index < pageNames.getItemCount() ){
      pages.add( pageNames.getItem(index),comp );
      //pages.add("West",cb);
      }
    return comp;
  }

  public Component add(Component comp) {
    return add(comp,0);
  }

  public int indexOf(String name) {
    for (int i = 0; i < pageNames.getItemCount(); i++)
      if ( pageNames.getItem(i).equals(name) )
        return i;
    return -1;
  }

  public void remove(String name) {
    remove( indexOf(name) );
  }

  public Component getItem(int index) {
    return pages.getComponent(index);
  }

  public Component getItem(String name) {
    return getItem( indexOf(name) );
  }

  public void remove(int index) {
    if (index < pageNames.getItemCount())  {
      pageNames.remove(index);
      pages.remove(index);
    }
  }

  public void removeAll() {
    pageNames.removeAll();
    pages.removeAll();
  }

 /*
  public static void main(String[] args) {
    ChoiceCardPanel ccp = new ChoiceCardPanel("Folders");
    ccp.add("One",new Button("One"));
    ccp.add("TextArea",new TextArea());
    new WinFrame("ChoiceCardPanel Demo",ccp) .appMainWindow().setVisible(true);
  }
 */
}