editjdialog.java

二手车管理软件

/** Programmname : EditJDialog <br>
Klasse : <b> EditJDialog </b>
@autor Li,Haibin   Hou,Yujing   Zhang,Xiangpeng
@version 1.0 / 15.12.2006
*/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class EditJDialog extends PkwGUI {
	private PkwArray aPkwArray;

	private int posPkwArr;
	private Pkw editPkw;
	private Pkw deletePkw;
	private Pkw updatePkw;
	private JButton updateJButton, resetJButton, quitJButton, deleteJButton,
			prevJButton, nextJButton;
	private EditJDialogActionListener aEditJDialogActionListener;
	private int plbutton, pwbutton = 100, pdelta = 120;
	
	/** Konstuktor EditJDialog */
	public EditJDialog(MainGUI aGUI, boolean mode) {
		super(aGUI, mode);

		setSize(400, 580);
		setLocation(500, 10);

		actionJLabel.setText("EDIT Pkw");

		typJTextField.setEditable(false);
		typJTextField.setBackground(noeditColor);

		herstellerJTextField.setEditable(false);
		herstellerJTextField.setBackground(noeditColor);

		aEditJDialogActionListener = new EditJDialogActionListener(this);

		updateJButton = new JButton("UPDATE");
		updateJButton.setBounds(plbutton = pl, po += 2 * ph, pwbutton, ph);
		updateJButton.setVisible(true);
		getContentPane().add(updateJButton);
		updateJButton.addActionListener(aEditJDialogActionListener);

		resetJButton = new JButton("RESET");
		resetJButton.setBounds(plbutton += pdelta, po, pwbutton, ph);
		resetJButton.setVisible(true);
		getContentPane().add(resetJButton);
		resetJButton.addActionListener(aEditJDialogActionListener);

		quitJButton = new JButton("QUIT");
		quitJButton.setBounds(plbutton += pdelta, po, pwbutton, ph);
		quitJButton.setVisible(true);
		getContentPane().add(quitJButton);
		quitJButton.addActionListener(aEditJDialogActionListener);

		deleteJButton = new JButton("DELETE");
		deleteJButton.setBounds(plbutton = pl, po += 2 * ph, pwbutton, ph);
		deleteJButton.setVisible(true);
		getContentPane().add(deleteJButton);
		deleteJButton.addActionListener(aEditJDialogActionListener);

		prevJButton = new JButton("PREV");
		prevJButton.setBounds(plbutton += pdelta, po, pwbutton, ph);
		prevJButton.setVisible(true);
		getContentPane().add(prevJButton);
		prevJButton.addActionListener(aEditJDialogActionListener);

		nextJButton = new JButton("NEXT");
		nextJButton.setBounds(plbutton += pdelta, po, pwbutton, ph);
		nextJButton.setVisible(true);
		getContentPane().add(nextJButton);
		nextJButton.addActionListener(aEditJDialogActionListener);
	}
	
	/** liefert den gel鰏chten Pkw zur點k */
	public Pkw getDeletePkw()
	{
		Pkw aPkw = deletePkw;
		deletePkw = null;
		return aPkw;
	}
	/** liefert ge鋘derten Pkw zur點k */
	public Pkw getUpdatePkw()
	{
		Pkw  aPkw = updatePkw;
		updatePkw = null ;
		return aPkw;
	}

	/**  */
	public void setLinkPkwArray(PkwArray p) {
		if (p != null) {
			aPkwArray = p;
		}
	}

	public void setPosition(int j) {
		posPkwArr = j;
		editPkw = aPkwArray.getPkw(posPkwArr);
		displayJTextFields(editPkw);
	}

	private void displayJTextFields(Pkw aPkw) {
		if (editPkw != null) {
			identnummerJTextField.setText(Integer.toString(aPkw.getIdentnummer()));
			typJTextField.setText(aPkw.getTyp());
			herstellerJTextField.setText(aPkw.getHersteller());
			farbeJTextField.setText(aPkw.getFarbe());
			kmleistungJTextField.setText(Integer.toString(editPkw.getKmleistung()));
			preisJTextField.setText(Integer.toString(aPkw.getPreis()));
		}
	}

	private void checkEditableJTextFields() {
		errorcode = 0;

		farbeString = farbeJTextField.getText().toUpperCase();
		if (farbeString.length() == 0 || farbeString.length() > 20) {
			errorcode = 4;
			return;
		}
		kmleistungString = kmleistungJTextField.getText();
		if (kmleistungString.length() == 0) kmleistungString = "0";
		try {
			kmleistung = Integer.parseInt(kmleistungString);
		} catch (NumberFormatException nex) {
			errorcode = 6;
			return;
		}
		if (kmleistung < 0 || kmleistung >= 1000000) {
			errorcode = 5;
			return;
		}
		preisString = preisJTextField.getText();
		if (preisString.length() == 0)
			preisString = "0";
		try {
			preis = Integer.parseInt(preisString);
		} catch (NumberFormatException nex) {
			errorcode = 8;
			return;
		}
		if (preis < 0 || preis >= 1000000) {
			errorcode = 7;
			return;
		}
		return;
	}

	public void callBackUpdateJButton() {
		checkEditableJTextFields();
		if (errorcode == 0) {
			editPkw.setFarbe(farbeString);
			editPkw.setKmleistung(kmleistung);
			editPkw.setPreis(preis);
			updatePkw = editPkw;
			displayJTextFields(editPkw);
			aPkwArray.changes();
			JOptionPane.showMessageDialog(this, "Update ist erfolgt !");
		} else
			runMessageDialog();
	}

	public void callBackResetJButton() {
		farbeJTextField.setText(editPkw.getFarbe());
		kmleistungJTextField.setText(Integer.toString(editPkw.getKmleistung()));
		preisJTextField.setText(Integer.toString(editPkw.getPreis()));
	}

	public void callBackQuitJButton() {
		setVisible(false);
	}

	public void callBackDeleteJButton() {
		int n = JOptionPane.showConfirmDialog(this,
				"Wollen Sie wiklich loeschen?", "Confirm Dialog",
				JOptionPane.YES_NO_OPTION);
		if (n == 0) {
			deletePkw = editPkw;
			Pkw.delete(editPkw);
			if (0 == aPkwArray.getCount()){
				editPkw = null;
				updatePkw = null;
				deletePkw = null;
				JOptionPane.showMessageDialog(this, "Delete ist erfolgt !");
				JOptionPane.showMessageDialog(this, "Anzahl Pkws ist 0 !");
				setVisible(false);
			}
			else{
				if (aPkwArray.getCount() > (posPkwArr)) editPkw=aPkwArray.getPkw(posPkwArr);
				else if (posPkwArr > 0)  editPkw=aPkwArray.getPkw(--posPkwArr);
				displayJTextFields(editPkw);
				JOptionPane.showMessageDialog(this, "Delete ist erfolgt !");
			}
			
		}
	}

	public void callBackPrevJButton() {
		if (posPkwArr > 0) {
			editPkw = (Pkw) aPkwArray.getPkw(--posPkwArr);
			displayJTextFields(editPkw);
		} else
			JOptionPane
					.showMessageDialog(this, "Kein weiterer Pkw vorhanden !");
	}

	public void callBackNextJButton() {
		if (aPkwArray.getCount() > (posPkwArr + 1)) {
			editPkw = (Pkw) aPkwArray.getPkw(++posPkwArr);
			displayJTextFields(editPkw);
		} else
			JOptionPane
					.showMessageDialog(this, "Kein weiterer Pkw vorhanden !");
	}
}

class EditJDialogActionListener implements ActionListener
{
  EditJDialog   aJDialog;

  public EditJDialogActionListener(EditJDialog mJDialog)
  { aJDialog = mJDialog; }

  public void actionPerformed ( ActionEvent evt )
  {
    String [] commandString ={"UPDATE","RESET","QUIT","DELETE","PREV","NEXT"};

    int  i,nr=-1;
    for ( i=0, nr=-1 ; i < commandString.length ; i++ )
    if ( commandString[i].equals(evt.getActionCommand()))
    { nr=i; break; }

    switch ( nr )
    {
      case 0 :  aJDialog.callBackUpdateJButton();
                break;
      case 1 :  aJDialog.callBackResetJButton();
                break;
      case 2 :  aJDialog.callBackQuitJButton();
                break;
      case 3 :  aJDialog.callBackDeleteJButton();
                break;
      case 4 :  aJDialog.callBackPrevJButton();
                break;
      case 5 :  aJDialog.callBackNextJButton();
                break;
      default : break;
    }
  }
}