travelbrokerframe.java

来自「《移动Agent技术》一书的所有章节源代码。」· Java 代码 · 共 206 行

/* TravelBrokerFrame.java
 * $Id: TravelBrokerFrame.java,v 2.3 1997-11-19 19:22:41+09 ht Exp $ $Name: alpha5_1-release $
 */
package com.ibm.acl.kqmlsample.travel;

import com.ibm.acl.kqml.*;

import java.lang.*;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import java.io.*;


/**
 *
 * @version     $Revision: 2.3 $ $Date: 1997-11-19 19:22:41+09 $
 * @author      Hajime Tsuchitani
 */

public class TravelBrokerFrame extends Frame {
  private static final String rcsid = "$Id: TravelBrokerFrame.java,v 2.3 1997-11-19 19:22:41+09 ht Exp $ $Name: alpha5_1-release $";

  private List providerList; // List box;
  private Vector providerTable = new Vector(); // real provide table
  private Label providerListLabel;
  private Label titileLabel;
  private Panel northPanel;
  private Panel southPanel;
  private TravelBroker travelBroker;
  private TextArea textArea; // for system log
  private Menu fileMenu;
  private MenuItem quit;
  private MenuBar menuBar;
  private Button subscribe;
  private Choice category;
  private Choice subCategory;
  private GridBagLayout gridbag;
  private GridBagConstraints gridBC;

  public TravelBrokerFrame(String title,
			  TravelBroker travelBroker)
  {
    super(title);

    this.travelBroker = travelBroker;

    // menu creation
    fileMenu = new Menu("File");
    quit = new MenuItem("Quit");
    menuBar = new MenuBar();
    fileMenu.add(quit);
    menuBar.add(fileMenu);
    setMenuBar(menuBar);

    // syslog text area
//    textArea = new TextArea();
//    textArea.minimumSize(400, 300);
//    textArea.preferredSize(400, 400);
//    textArea.setBackground(Color.white);
//    textArea.setEditable(false);

    // service table construction
    providerList = new List(20, false);
    providerList.minimumSize(20); // 20 rows needed.
    providerList.preferredSize(20); 
    //providerList.setFont(new Font("Courier", Font.PLAIN, 12));
    //providerList.setFont(new Font("Courier", Font.PLAIN, 18));
    providerList.setFont(new Font("Courier", Font.BOLD, 18));
    providerList.setBackground(Color.white);

    providerListLabel = new Label("Service Provider");
    //providerListLabel.setFont(new Font("Times", Font.BOLD, 16));
    providerListLabel.setFont(new Font("Serif", Font.BOLD, 20));


//    delete = new Button("Delete Record");

    titileLabel = new Label("TravelBroker");
    titileLabel.setFont(new Font("Helvetica", Font.BOLD, 36));
    titileLabel.setForeground(new Color(60, 170, 60)); //  green

    northPanel = new Panel();
    gridbag = new GridBagLayout();
    gridBC = new GridBagConstraints();
    northPanel.setLayout(gridbag);

    gridBC.gridwidth = GridBagConstraints.REMAINDER;
    gridbag.setConstraints(titileLabel, gridBC);
    northPanel.add(titileLabel);

    gridBC.gridwidth = GridBagConstraints.REMAINDER;
    gridBC.anchor = GridBagConstraints.WEST;
    gridBC.weightx = 1.0;
    gridBC.weighty = 1.0;
    gridbag.setConstraints(providerListLabel, gridBC);
    northPanel.add(providerListLabel);

//    gridBC.gridwidth = GridBagConstraints.REMAINDER;
//    gridBC.anchor = GridBagConstraints.EAST;
//    gridbag.setConstraints(delete, gridBC);
//    northPanel.add(delete);

/*    gridBC.anchor = GridBagConstraints.CENTER;
    gridBC.fill = GridBagConstraints.BOTH;
    gridbag.setConstraints(providerList, gridBC);
    northPanel.add(providerList);
*/
    northPanel.setBackground(Color.white);

    southPanel = new Panel();
    gridbag = new GridBagLayout();
    gridBC = new GridBagConstraints();
    southPanel.setLayout(gridbag);

    subscribe = new Button("Subscribe");
    gridbag.setConstraints(subscribe, gridBC);
    southPanel.add(subscribe);

    category = new Choice();
    category.addItem("travel");
    gridbag.setConstraints(category, gridBC);
    southPanel.add(category);

    subCategory = new Choice();
    subCategory.addItem("airline");
    subCategory.addItem("hotel");
    subCategory.addItem("car");
    gridBC.gridwidth = GridBagConstraints.REMAINDER;
    gridbag.setConstraints(subCategory, gridBC);
    southPanel.add(subCategory);
    southPanel.setBackground(Color.white);

    add("North", northPanel);
    add("Center", providerList);
    add("South", southPanel);

    pack();
    resize(600, 400);
  }

  public void setMessage(String msg) {
    textArea.appendText(msg + "\n");
  }

  public void addItem(AgentInfo providerAddress) {

    StringBuffer 
      sb = new
	StringBuffer("                                                  ");

    sb.insert(0, new String(providerAddress.getAgentName()));
    //sb.insert(40, new String(providerAddress.getURL()));
    sb.insert(15, new String(providerAddress.getURL()));
    providerList.addItem(sb.toString().trim());
    providerTable.addElement(providerAddress); 
  }

  public boolean handleEvent(Event evt) {
    if (evt.id == Event.WINDOW_DESTROY) {
      System.exit(0);
    } else if (evt.id == Event.ACTION_EVENT) {
      if (evt.target == quit) {
	System.exit(0);
      } else if (evt.target == subscribe) {
	String cat = category.getSelectedItem();
	String scat = subCategory.getSelectedItem();
	travelBroker.setSubAskallY(cat, scat);
	return true;
      }
    }
    return super.handleEvent(evt);
  }

// for test
    
  public static void main(String[] args) {
    String str1 = 
      new String("InfoAgent.TravelBroker                  atp://objects.yamato.ibm.com:7070");
    String str2 =
      new String("InfoAgent.InfoServiceAgent              atp://objects.yamato.ibm.com:7070");
    String str3 =
      new String("InfoAgent.LibrarianAgent                atp://pink01.yamato.ibm.com:7070");
    TravelBrokerFrame frame = 
      new TravelBrokerFrame("TravelBroker", null);

    frame.providerList.addItem(str1);
    frame.providerList.addItem(str2);
    frame.providerList.addItem(str3);
    frame.providerList.addItem(str1);
    frame.providerList.addItem(str2);
    frame.providerList.addItem(str3);
    frame.providerList.addItem(str1);
    frame.providerList.addItem(str2);
    frame.providerList.addItem(str3);

    frame.show();

  }

}