package de.memtext.dlg;

import java.awt.Dimension;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.KeyStroke;

import de.memtext.rights.NewPasswordChecker;
import de.memtext.util.WindowUtils;
import de.memtext.widgets.HorizontalBox;
import de.memtext.widgets.WarningMessage;

public abstract class PasswdChangeDlg extends OkCancelDlg {
	private JLabel lblInfoDummy=new JLabel();
	private NewPasswordChecker newPasswordChecker;
	private boolean isCheckOldPasswdWanted = true,isNewPasswordRequired=true;
	private JTextField usernameField = new JTextField(20);
	private KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0);
    private JLabel lblInfo=new JLabel();
	private JLabel lbl0 = new JLabel("Username:", JLabel.RIGHT);
	private JLabel lbl1 = new JLabel("altes Passwort:", JLabel.RIGHT);
	private JPasswordField oldpasswField = new JPasswordField(30);
	private JLabel lbl2 = new JLabel("neues Passwort:", JLabel.RIGHT);
	private JPasswordField newpasswField = new JPasswordField(30);
	private JLabel lbl3 = new JLabel("wiederholen:", JLabel.RIGHT);
	private JPasswordField newpasswField2 = new JPasswordField(30);

	public PasswdChangeDlg(Frame frame, String title) {
		super(frame, title, true);
		JPanel p=new JPanel();
		p.add(lblInfo);
		HorizontalBox hbox = new HorizontalBox();
		JPanel lblPanel = new JPanel(new GridLayout(0, 1));
		lblPanel.setMaximumSize(new Dimension(150, 100));
		
		
		lblPanel.add(lbl0);
		lblPanel.add(lbl1);
		lblPanel.add(lbl2);
		lblPanel.add(lbl3);
		
		lblInfo.setVisible(false);
		hbox.add(lblPanel);
		JPanel fieldPanel = new JPanel(new GridLayout(0, 1));
		
		fieldPanel.add(usernameField);
		usernameField.getKeymap().removeKeyStrokeBinding(enter);

		fieldPanel.add(oldpasswField);
		oldpasswField.getKeymap().removeKeyStrokeBinding(enter);
		fieldPanel.add(newpasswField);
		newpasswField.getKeymap().removeKeyStrokeBinding(enter);
		fieldPanel.add(newpasswField2);
		newpasswField2.getKeymap().removeKeyStrokeBinding(enter);
		hbox.add(fieldPanel);
		this.setCenter(hbox);
		this.setNorth(p);
		this.pack();
		WindowUtils.center(this);
	}
	public void setNewPasswordChecker(NewPasswordChecker newPasswordChecker)
	{
	    this.newPasswordChecker=newPasswordChecker;
	}
	public void setUsername(String username) {
		usernameField.setText(username);
	}
	public void clear() {
		usernameField.setText("");
		oldpasswField.setText("");
		newpasswField.setText("");
		newpasswField2.setText("");
	}
	protected abstract boolean isOldPasswordOK(String username, String passwd);

	/**
	 * wenn OK geklickt wird wird automatisch geprüft ob die Länge des neuen
	 * Passwort passt und beide gleich sind
	 */
	protected final void performOk() {
	    String new1 = new String(newpasswField.getPassword());
		if (new1==null||new1.length()<4   )
		{
		    WarningMessage.show(this,
					"Das neue Passwort ist zu kurz.",
					"Achtung");
				return;
		}
	    
	    String new2 = new String(newpasswField2.getPassword());
		String oldPassword = new String(oldpasswField.getPassword());
		if (!new1.equals(new2)) {
			WarningMessage.show(this,
				"Die beiden neuen Passwörter stimmen nicht überein",
				"Achtung");
			return;
		}
		String faults=null;
		if (newPasswordChecker!=null) faults=newPasswordChecker.checkForFaults(getUsername(),new String(newpasswField.getPassword()));
		
	    if (faults!=null) {
			WarningMessage.show(this,
				faults,
				"Achtung");
			return;
		}
		
		if (isNewPasswordRequired&&new1.equals(oldPassword))
		{
			WarningMessage.show(this,"Sie müssen ein neues Passwort eingeben","Achtung");
			return;
		}
		
		if (isCheckOldPasswdWanted
			&& !isOldPasswordOK(usernameField.getText(),
				oldPassword)) {
			WarningMessage.show(this,"Das alte Passwort stimmt nicht", "Achtung");
			return;
		}
		this.hide();
	}

	protected void performCancel() {
		this.hide();
	}


	public void setUsernameFieldEnabled(boolean b) {
		usernameField.setEnabled(b);
	}
	public void setOldPassword(String passw) {
		oldpasswField.setText(passw);
		}
	public String getUsername() {
		return usernameField.getText();
	}
	public String getOldPasswd() {
		return new String(oldpasswField.getPassword());
	}
	public String getNewPasswd() {
		return new String(newpasswField.getPassword());
	}
	public boolean isCheckOldPasswdWanted() {
		return isCheckOldPasswdWanted;
	}

	public void setCheckOldPasswdWanted(boolean b) {
		isCheckOldPasswdWanted = b;
		lbl1.setVisible(b);
		oldpasswField.setVisible(b);
	}
	public void setInfoLabel(String txt) {
		lblInfo.setVisible(true);
		lblInfo.setText(txt);
		lblInfo.setFont(new Font("SansSerif",Font.BOLD,12));
		}

	public boolean isNewPasswordRequired() {
		return isNewPasswordRequired;
	}

	public void setNewPasswordRequired(boolean b) {
		isNewPasswordRequired = b;
	}
public static void main(String a[])
{
	PasswdChangeDlg dlg=new PasswdChangeDlg(null,"dummy"){

		protected boolean isOldPasswordOK(String username, String passwd) {
			return false;
		}}
	;
	dlg.setInfoLabel("bitte ändern");
	dlg.show();
}
}

//Created on 09.01.2004 at 17:16:16