Java 1.2 How-To/JavaHowTo.iso/3rdParty/jbuilder/TRIAL/JBUILDER/JVISBRKR.Z/CreditApprovalApplet.java

Java Source | 1998-05-08 | 6.7 KB | 214 lines

/*
 * Copyright (c) 1997-1998 Borland International, Inc. All Rights Reserved.
 *
 * This SOURCE CODE FILE, which has been provided by Borland as part
 * of a Borland product for use ONLY by licensed users of the product,
 * includes CONFIDENTIAL and PROPRIETARY information of Borland.
 *
 * USE OF THIS SOFTWARE IS GOVERNED BY THE TERMS AND CONDITIONS
 * OF THE LICENSE STATEMENT AND LIMITED WARRANTY FURNISHED WITH
 * THE PRODUCT.
 *
 * IN PARTICULAR, YOU WILL INDEMNIFY AND HOLD BORLAND, ITS RELATED
 * COMPANIES AND ITS SUPPLIERS, HARMLESS FROM AND AGAINST ANY CLAIMS
 * OR LIABILITIES ARISING OUT OF THE USE, REPRODUCTION, OR DISTRIBUTION
 * OF YOUR PROGRAMS, INCLUDING ANY CLAIMS OR LIABILITIES ARISING OUT OF
 * OR RESULTING FROM THE USE, MODIFICATION, OR DISTRIBUTION OF PROGRAMS
 * OR FILES CREATED FROM, BASED ON, AND/OR DERIVED FROM THIS SOURCE
 * CODE FILE.
 */
//--------------------------------------------------------------------------------------------------
// CORBA Reference Application
// Copyright (c) 1997 by Borland International, All Rights Reserved
//
// Credit Approval Applet
//--------------------------------------------------------------------------------------------------

package borland.reference.creditapproval.client;

import borland.jbcl.control.*;
import borland.jbcl.layout.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import borland.reference.creditapproval.CORBAInterface.*;
import borland.reference.creditapproval.client.Res;

public class CreditApprovalApplet extends Applet {
  boolean isStandalone = false;
  CreditApprovalDispenser objectDispenser;
  CreditApproval creditApproval;
  CardLayout cardLayout1 = new CardLayout();
  CallbackThread callbackControlThread;
  private ApplicationFormPanel applicantPanel;
  private ApplicationApprovedPanel approvedPanel;
  private ApplicationDeniedPanel deniedPanel;
  private SystemErrorPanel errorPanel;
  Frame browserFrame;
  private final String imageFolder = "Images";
  ResourceBundle res = Res.getBundle("borland.reference.creditapproval.client.Res");

  //Get a parameter value
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  //Construct the applet
  public CreditApprovalApplet() {
    callbackControlThread = new CallbackThread();
    callbackControlThread.start();
    callbackControlThread.setPriority( Thread.NORM_PRIORITY + 1 );
  }

  public String getImageLocation() {
    return this.getCodeBase() + imageFolder + java.io.File.separator;
  }
  //Initialize the applet
  public void init() {

    // Get the frame
    Component comp = this;
    while (!(comp instanceof Frame) ) comp = comp.getParent();
    browserFrame = (Frame) comp;

    try {
      jbInit();
    } catch (Exception e) {
    e.printStackTrace(); }
  }

  /**
  * Initialize Components
  */
  private void jbInit() throws Exception{
    this.setLayout(cardLayout1);
    this.setSize(new Dimension(722, 403));
    applicantPanel = new ApplicationFormPanel(this);
    approvedPanel = new ApplicationApprovedPanel(this);
    deniedPanel = new ApplicationDeniedPanel(this);
    errorPanel = new SystemErrorPanel(this);
    add(applicantPanel, "Applicant Form" );
    add(approvedPanel,  "Approved" );
    add(deniedPanel,    "Denied" );
    add(errorPanel,     "Error");
    browserFrame.pack();
  }

  /**
  * Start the applet
  */
  public void start() {
  }

  /**
  * Apply for a credit card using the specified Application Information
  * This method submits the applicant information to the CORBA Server
  * object.
  */
  public void applyForCard(applicantInfoStruct appInfo) {

    callbackControlThread.getCallback().updateStatusText(res.getString("Connecting_to_Server") + "...");
    try {
      // Initialize the ORB
      org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init();

      // Bind to the dispenser object!
      objectDispenser =
         CreditApprovalDispenserHelper.bind(orb, "Main Dispenser");

      // Reserve a credit approval object
      creditApproval = objectDispenser.reserveCreditApprovalObject();

      creditApprovalStruct creditCardInfo;
      try {
        creditCardInfo = creditApproval.getCreditApproval( appInfo, callbackControlThread.getCallback() );

        // Display the Credit Card Information to the user using the Approved Panel
        approvedPanel.setCreditCardInformation( creditCardInfo );
        ((CardLayout) this.getLayout()).show( this, "Approved" );

      } catch (CreditApprovalException e ) {

        // Display the error to the user using the Error Panel
        errorPanel.setError( e.reason );
        ((CardLayout) this.getLayout()).show( this, "Error" );
      } catch (CreditDeniedException e ) {

        // Use the Denied Panel to explain why the application was not approved
        deniedPanel.setReason( e.reason );
        ((CardLayout) this.getLayout()).show( this, "Denied" );
        System.out.println( e.reason );
      } catch( Exception e) {

        // Display the error to the user using the Error Panel
        errorPanel.setError( e.getMessage() );
        ((CardLayout) this.getLayout()).show( this, "Error" );
      }

      try{

        // Release the reserved approval object
        objectDispenser.releaseCreditApprovalObject(creditApproval);
      } catch (Exception e)
      {
        System.err.println(e);
      }
    } catch (org.omg.CORBA.NO_IMPLEMENT e) {
      // Display the error to the user using the Error Panel
      errorPanel.setError( res.getString("Server_Down") );
      ((CardLayout) this.getLayout()).show( this, "Error" );

    } catch (Exception e) {

      // Display the error to the user using the Error Panel
      errorPanel.setError( e.getMessage() );
      ((CardLayout) this.getLayout()).show( this, "Error" );
    }

    // Reset the status text
    callbackControlThread.getCallback().updateStatusText("");
  }

  /**
  * Stop the applet
  */
  public void stop() {
  }

  /**
  * Get Applet information
  */
  public String getAppletInfo() {
    return "Cliffhanger Credit Card Application Applet";
  }

  /**
  * Get parameter info
  */
  public String[][] getParameterInfo() {
    return null;
  }

  /**
  * Stops the execution of the App/Applet
  */
  public void destroyApplet() {
    if (!isStandalone) {
      stop();
      destroy();
    }
    System.exit(0);
  }

  /**
  * Displays the Application Form Pane
  */
  public void displayApplication() {
    ((CardLayout) this.getLayout()).show( this, "Applicant Form" );
  }

}