//*************************************************************
//			 暗号化と復号化
//				  「CipherTest」
//
//　　　　　　　　　　作　成　者：ルート高菜　　　
//　　　　　　　　　　作成開始月：２０１０／２
//　　　　　　　　　　最終更新月：２０１０／２　  [TN127/J117]
//*************************************************************
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;


public class CipherTest extends JPanel implements ActionListener {
	//Eclipseの場合、シリアライズ可能クラスでこれがないと警告が出る
	private static final long serialVersionUID=0;
	//------------------------------------------------------------------
	//
	JTextField fieldKey=new JTextField(10);
	JButton buttonKey=new JButton("自動作成");
	JComboBox comboKey=new JComboBox(new String[]{"3","4","5","6"});
	//
	JTextField fieldBefore=new JTextField(15);
	JButton buttonEncrypt=new JButton("上のKeyで暗号化→");
	JTextField fieldEncrypted=new JTextField(15);
	//
	JTextField fieldAfter=new JTextField(15);
	JButton buttonDecrypt=new JButton("上のKeyで復号化→");
	JTextField fieldDecrypted=new JTextField(15);
	//------------------------------------------------------------------
	//
	public static void main(String[] args) {
		JFrame frame=new JFrame();
		frame.getContentPane().add(new CipherTest());
		frame.setTitle("CipherTest");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);	//右上×印で終了
		frame.setSize(750,200);
		frame.setVisible(true);
		frame.setLocationRelativeTo(null);	//画面の真ん中に表示
	}
	//------------------------------------------------------------------
	//
	public CipherTest(){
		//
		JPanel keyPanel=new JPanel();	//1
		keyPanel.add(new JLabel("Key："));
		keyPanel.add(fieldKey);
		keyPanel.add(comboKey);
		keyPanel.add(buttonKey);
		//
		JPanel encryptPanel=new JPanel();	//2-1
		encryptPanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(),"Encrypt"));	//枠線
		encryptPanel.add(new JLabel("暗号化前の文字列："));
		encryptPanel.add(fieldBefore);
		encryptPanel.add(buttonEncrypt);
		encryptPanel.add(new JLabel("暗号化の結果："));
		encryptPanel.add(fieldEncrypted);
		//
		JPanel decryptPanel=new JPanel();	//2-2
		decryptPanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(),"Decrypt"));	//枠線
		decryptPanel.add(new JLabel("暗号化後の文字列："));
		decryptPanel.add(fieldAfter);
		decryptPanel.add(buttonDecrypt);
		decryptPanel.add(new JLabel("復号化の結果："));
		decryptPanel.add(fieldDecrypted);
		//
		JPanel cryptPanel=new JPanel();	//2
		cryptPanel.setLayout(new GridLayout(2,1));
		cryptPanel.add(encryptPanel);
		cryptPanel.add(decryptPanel);
		//
		setLayout(new BorderLayout());
		add(keyPanel,BorderLayout.NORTH);
		add(cryptPanel,BorderLayout.CENTER);
		//
		buttonKey.addActionListener(this);
		buttonEncrypt.addActionListener(this);
		buttonDecrypt.addActionListener(this);
	}
	//------------------------------------------------------------------
	//
	public void actionPerformed(ActionEvent e) {
		Object object=e.getSource();
		if(object==buttonKey){						//Keyを自動作成
			fieldKey.setText(CipherFinal.makeKeyString( comboKey.getSelectedIndex()+3 ));
		}else if(object==buttonEncrypt){			//暗号化
			try{
				String key=fieldKey.getText();
				String before=fieldBefore.getText();
				if(!key.equals("") && !before.equals("")){
					fieldEncrypted.setText(CipherFinal.encrypt(key, before));	
				}
			}catch(Exception ex){
				JOptionPane.showMessageDialog(this,ex.toString(),"エラー",JOptionPane.ERROR_MESSAGE);
				fieldEncrypted.setText("");	
			}
		}else if(object==buttonDecrypt){			//復号化
			try{
				String key=fieldKey.getText();
				String after=fieldAfter.getText();
				if(!key.equals("") && !after.equals("")){
					fieldDecrypted.setText(CipherFinal.decrypt(key, after));	
				}
			}catch(Exception ex){
				JOptionPane.showMessageDialog(this,ex.toString(),"エラー",JOptionPane.ERROR_MESSAGE);
				fieldDecrypted.setText("");	
			}
		}
	}
}