Java assignment help

/* * (c) 2018 Richard Blumenthal, All Rights Reserved * * Regis University students may use this code for their own * educational purposes, but unauthorized duplication or * distribution withour the author's consent is both a copyright * and honor code violation. */ package edu.regis.cs475.gui; import edu.regis.cs475.domain.Assignment; import java.awt.GridBagConstraints; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.AbstractTableModel; /** * An editable view of an Assignment model. * * @author rickb */ public class AssignmentView extends JDialog implements ActionListener, WindowListener { /** * The Assignment model displayed in this view */ private Assignment model; /** * Assignment variables and their values are displayed in this table */ private JTable table; private MyTableModel tableModel; private JButton okBut; public AssignmentView() { super((JFrame) null, "Select an Assignment", true); setModal(true); initComponents(); initLayout(); addWindowListener(this); setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE); pack(); } /** * Return the Assignment model displayed in this view * * @return an Assignment (only updated if Ok was previously selected) */ public Assignment getModel() { // updateModel return model; } /** * Display the given model in this view * * @param model an Assignment */ public void setModel(Assignment model){ this.model = model; updateDisplay(); } /** * Create the primary child components used in this view */ private void initComponents() { Object[][] data = {{"x1", new Boolean(false)}}; tableModel = new MyTableModel(data); table = new JTable(tableModel); okBut = new JButton("OK"); okBut.addActionListener(this); } /** * Layout the child components used in this view */ private void initLayout() { GPanel panel = new GPanel(); JScrollPane scroller = new JScrollPane(table); JLabel label = new JLabel("Please select values for the variables"); panel.addc(label, 0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, 5,10,0,10); panel.addc(scroller, 0, 1, 1, 1, 1.0, 1.0, GridBagConstraints.NORTHWEST, GridBagConstraints.BOTH, 5,10,0,10); panel.addc(okBut, 0, 2, 1, 1, 0.0, 0.0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, 5,10,0,10); getContentPane().add(panel); } /** * Update the view to display the current model */ private void updateDisplay() { String[] variables = model.variables(); Object[][] data = new Object[variables.length][2]; for (int i = 0; i < variables.length; i++) { Object[] row = new Object[2]; row[0] = variables[i]; row[1] = new Boolean(false); data[i] = row; } tableModel = new MyTableModel(data); table.setModel(tableModel); } /** * Update the current model with the values displayed in this view. */ private void updateModel() { MyTableModel tableModel = (MyTableModel) table.getModel(); for (int i = 0; i < tableModel.getRowCount(); i++) { String var = (String) tableModel.getValueAt(i, 0); boolean val = (boolean) tableModel.getValueAt(i, 1); model.setValue(var, val); } } /** * Handle the user's clik on the OK button * * @param evt */ @Override public void actionPerformed(ActionEvent evt) { if (evt.getSource() == okBut) { updateModel(); setVisible(false); } } @Override public void windowOpened(WindowEvent e) { } /** * Update the model, if the user exits via the window close icon. * * @param e */ @Override public void windowClosing(WindowEvent e) { updateModel(); } @Override public void windowClosed(WindowEvent e) { } @Override public void windowIconified(WindowEvent e) { } @Override public void windowDeiconified(WindowEvent e) { } @Override public void windowActivated(WindowEvent e) { } @Override public void windowDeactivated(WindowEvent e) { } /** * Table model for the JTable displaying the assignments. * (Typical approach for displaying a checkbox for the Boolean values.) */ class MyTableModel extends AbstractTableModel { private String[] columnNames = {"Variable", "Value (select for true)"}; /** * {{String-variable-name, Boolean-variable-value} ... } */ private Object[][] data; public MyTableModel(Object[][] data) { super(); this.data = data; } @Override public int getColumnCount() { return columnNames.length; } @Override public int getRowCount() { return data.length; } @Override public String getColumnName(int col) { return columnNames[col]; } @Override public Object getValueAt(int row, int col) { return data[row][col]; } @Override public Class getColumnClass(int c) { return getValueAt(0, c).getClass(); } @Override public boolean isCellEditable(int row, int col) { if (col < 1) { return false; } else { return true; } } @Override public void setValueAt(Object value, int row, int col) { data[row][col] = value; fireTableCellUpdated(row, col); } } }