updateborrowerframe.java

数据结构及算法 对于参加ACM的学生有一定帮助 里面有详细的解答

//
//  Unified Library Application
//  Case study in Unified Modeling Language Toolkit
//
//  UpdateBorrowerFrame.java
//
//
//  Copyright (c) 1998 John Wiley & Sons, Inc. All rights reserved.
//  Reproduction or translations of this work beyond that permitted
//  in Section 117 of the 1976 United States Copyright Act without
//  the express written permission of the copyright owner is unlawful.
//  Requests for further information should be addressed to Permissions
//  Department, John Wiley & Sons, Inc. The purchaser may make back-up
//  copies for his/her own use only and not for distribution or resale.
//  The Publisher assumes no responsibility for errors, omissions, or
//  damages, caused by the use of these programs of from the use of the
//  information contained herein.

package ui;
import bo.*;
import util.*;

import java.awt.*;

public class UpdateBorrowerFrame extends Frame {
	private BorrowerInformation borrower;

    void UpdateButton_Clicked(Event event) {
		if (borrower != null)
		{
    		borrower.setLastName(LastNameField.getText());
    		borrower.setFirstName(FirstNameField.getText());
    		borrower.setAddress(AddressField.getText());
    		borrower.setCity(CityField.getText());
    		borrower.setZip(ZipField.getText());
    		borrower.setState(StateField.getText());
    		borrower.update();
		}
		else
		{
		    new MessageBox(this,"You can't insert new borrowers in this window!");
		}
	}

	void DeleteButton_Clicked(Event event) {
		if (borrower != null)
		{
    		int nrLoans = borrower.getNoLoans();
    		for (int i = 0; i < nrLoans; i++)
    		{
    		    Loan loan = borrower.getLoan(i);
    		    Item item = loan.getItem();
    		    item.setLoan(new ObjId());
    		    loan.delete();
    		}
    		int nrReservations = borrower.getNoReservations();
    		for (int i = 0; i < nrReservations; i++)
    		{
    		    Reservation res = borrower.getReservation(i);
    		    Title title = res.getTitle();
    		    title.removeReservation(res.getObjId());
    	        res.delete();
    		}
    		borrower.delete();
    		borrower = null;
    		LastNameField.setText("");
		    FirstNameField.setText("");
            AddressField.setText("");
            CityField.setText("");
            ZipField.setText("");
            StateField.setText("");
        }
        else
        {
            new MessageBox(this,"There is no current borrower to delete!");
        }
	}

	void CancelButton_Clicked(Event event) {
		dispose();
	}

    private void UpdateFrame(ObjId id)
    {
        borrower = BorrowerInformation.getBorrowerInformation(id);
        LastNameField.setText(borrower.getLastName());
        FirstNameField.setText(borrower.getFirstName());
        AddressField.setText(borrower.getAddress());
        CityField.setText(borrower.getCity());
        ZipField.setText(borrower.getZip());
        StateField.setText(borrower.getState());
    }
	public UpdateBorrowerFrame(ObjId id, boolean nodelete) {


		//{{INIT_CONTROLS
		setLayout(null);
		addNotify();
		resize(insets().left + insets().right + 416,insets().top + insets().bottom + 301);
		LastNameField = new java.awt.TextField();
		LastNameField.reshape(insets().left + 96,insets().top + 12,181,25);
		add(LastNameField);
		FirstNameField = new java.awt.TextField();
		FirstNameField.reshape(insets().left + 96,insets().top + 60,181,25);
		add(FirstNameField);
		AddressField = new java.awt.TextField();
		AddressField.reshape(insets().left + 96,insets().top + 108,181,24);
		add(AddressField);
		CityField = new java.awt.TextField();
		CityField.reshape(insets().left + 96,insets().top + 156,183,26);
		add(CityField);
		ZipField = new java.awt.TextField();
		ZipField.reshape(insets().left + 96,insets().top + 204,83,28);
		add(ZipField);
		StateField = new java.awt.TextField();
		StateField.reshape(insets().left + 96,insets().top + 252,83,28);
		add(StateField);
		label1 = new java.awt.Label("Last Name");
		label1.reshape(insets().left + 12,insets().top + 12,73,24);
		add(label1);
		label2 = new java.awt.Label("Address");
		label2.reshape(insets().left + 12,insets().top + 108,73,24);
		add(label2);
		label3 = new java.awt.Label("City");
		label3.reshape(insets().left + 12,insets().top + 156,73,24);
		add(label3);
		label4 = new java.awt.Label("Zip");
		label4.reshape(insets().left + 12,insets().top + 204,60,24);
		add(label4);
		label5 = new java.awt.Label("State");
		label5.reshape(insets().left + 12,insets().top + 252,48,24);
		add(label5);


		UpdateButton = new java.awt.Button("Update");
		UpdateButton.reshape(insets().left + 312,insets().top + 12,74,25);
		add(UpdateButton);
		DeleteButton = new java.awt.Button("Delete");
		DeleteButton.reshape(insets().left + 312,insets().top + 60,74,25);
		add(DeleteButton);
		CancelButton = new java.awt.Button("Close");
		CancelButton.reshape(insets().left + 312,insets().top + 252,72,24);
		add(CancelButton);

		label6 = new java.awt.Label("First Name");
		label6.reshape(insets().left + 12,insets().top + 60,84,24);
		add(label6);
		setTitle("Update / Delete Borrower");
		//}}
		if (nodelete)
		    DeleteButton.disable();
        UpdateFrame(id);
        LastNameField.requestFocus();
		//{{INIT_MENUS
		//}}
	}

    public synchronized void show() {
    	move(50, 50);
    	super.show();
    }

	public boolean handleEvent(Event event) {
    	if (event.id == Event.WINDOW_DESTROY) {
            dispose();
            return true;
    	}
		if (event.target == DeleteButton && event.id == Event.ACTION_EVENT) {
			DeleteButton_Clicked(event);
			return true;
		}
		if (event.target == UpdateButton && event.id == Event.ACTION_EVENT) {
			UpdateButton_Clicked(event);
			return true;
		}
		if (event.target == CancelButton && event.id == Event.ACTION_EVENT) {
			CancelButton_Clicked(event);
			return true;
		}
		return super.handleEvent(event);
	}

	//{{DECLARE_CONTROLS
	java.awt.TextField LastNameField;
	java.awt.Label label1;
	java.awt.Label label2;
	java.awt.Label label3;
	java.awt.Label label4;
	java.awt.Label label5;
	java.awt.TextField AddressField;
	java.awt.TextField CityField;
	java.awt.TextField ZipField;
	java.awt.TextField StateField;
	java.awt.Button CancelButton;
	java.awt.Button UpdateButton;
	java.awt.Button DeleteButton;
	java.awt.TextField FirstNameField;
	java.awt.Label label6;
	//}}

	//{{DECLARE_MENUS
	//}}
}