Colony

import javax.swing.*;

import javax.swing.event.*;

import java.awt.*;

import java.awt.event.*;

/**

* TaskAddWindow class

* A window that provides a simple way to add tasks to a task queue.

*/

public class TaskAddWindow extends JFrame implements ActionListener, ListSelectionListener {

        JPanel panelButtons;

        JPanel panelParameters;

        JPanel panelSouth;

        JPanel panelSelection;

        JButton btnSubmit;

        JButton btnCancel;

        DefaultListModel availableListModel;

        JList availableList;

        JScrollPane spAvailableTasks;

        JTextArea txtDescription;

        JTextField txtParameters;

        public TaskAddWindow () {

                super("Add a Task");

                super.setSize(500,500);

                super.setLayout(new BorderLayout());

                // set up buttons

                btnSubmit = new JButton("Submit");

                btnCancel = new JButton("Cancel");

                panelButtons = new JPanel();

                panelButtons.setLayout(new FlowLayout());

                panelButtons.add(btnSubmit);

                panelButtons.add(btnCancel);

                this.getRootPane().setDefaultButton(btnSubmit);

                // set up task list

                availableListModel = new DefaultListModel();

                availableListModel.addElement("Map the Environment");

                availableListModel.addElement("Clean Up Chemical Spill");

                availableListModel.addElement("Grow Plants");

                availableListModel.addElement("Save the Cheerleader");

                availableListModel.addElement("Save the World");

                availableList = new JList(availableListModel);

                availableList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

                availableList.setSelectedIndex(-1);

                spAvailableTasks = new JScrollPane(availableList);

                spAvailableTasks.setBorder(BorderFactory.createTitledBorder("Select A Task"));

                txtDescription = new JTextArea();

                txtDescription.setEditable(false);

                txtDescription.setLineWrap(true);

                txtDescription.setWrapStyleWord(true);

                txtDescription.setBorder(BorderFactory.createTitledBorder("Description"));

                //set up parameter area

                panelParameters = new JPanel();

                panelParameters.setLayout(new BorderLayout());

                txtParameters = new JTextField();

                panelParameters.add(new JLabel("Optional parameters for this task: "), BorderLayout.WEST);

                panelParameters.add(txtParameters);

                // assemble objects

                panelSelection = new JPanel();

                panelSelection.setLayout(new GridLayout(1,2));

                panelSelection.add(spAvailableTasks);

                panelSelection.add(txtDescription);

                panelSouth = new JPanel();

                panelSouth.setLayout(new GridLayout(2,1));

                panelSouth.add(panelParameters);

                panelSouth.add(panelButtons);

                this.getContentPane().add(panelSouth, BorderLayout.SOUTH);

                this.getContentPane().add(panelSelection, BorderLayout.CENTER);

                this.setLocationRelativeTo(null);

                // add listeners here

                availableList.addListSelectionListener(this);

                btnSubmit.addActionListener(this);

                btnCancel.addActionListener(this);

        }

        public void prompt () {

                this.setVisible(true);

        }

        private String getDescription (int index) {

                if (index < 0)

                        return "";

                switch (index) {

                        case 0: return "SLAM and junk";

                        case 1: return "I'm not sure this works";

                        case 2: return "Push them into the light";

                        case 3: return "...";

                        case 4: return "...";

                        default: return "Task not recognized";

                }

        }

        public void actionPerformed (ActionEvent e) {

                Object source = e.getSource();

                if (source == btnSubmit) {

                        txtParameters.setText(txtParameters.getText().trim());

                        this.setVisible(false);

                } else if (source == btnCancel) {

                        this.setVisible(false);

                }

        }

        public void valueChanged (ListSelectionEvent e) {

                int index = availableList.getSelectedIndex();

                if (index >= 0)

                        txtDescription.setText(getDescription(index));

        }

}