package uk.ac.cam.ch.ami.gui.dialogs;



import uk.ac.cam.ch.ami.EquipmentFirstNames;

import uk.ac.cam.ch.ami.EquipmentSecondNames;

import uk.ac.cam.ch.ami.EquipmentThirdNames;

import uk.ac.cam.ch.ami.amievents.events.EquipmentAmiEvent;

import uk.ac.cam.ch.ami.amievents.verbs.EquipmentVerb;

import uk.ac.cam.ch.ami.gui.FocusKeyEventDispatcher;



import javax.swing.*;

import java.awt.*;

import java.awt.event.*;



/**

 * Creates a dialog which we use to both edit an existing EquipmentAmiEvent and register a new EquipmentAmiEvent,

 * depending upon whether the constructor is called with newEvent being true or false.  Each piece of Equipment

 * has a name consisting of (up to) three name fragments, which map to the three combo boxes in this dialog.

 */

public class EditEquipmentEventDialog extends JDialog  {

    /* outermost panel in the dialog, just for layout purposes */

    private JPanel contentPane;

    private JButton buttonOK;

    private JButton buttonCancel;

    /* status of the equipment: has it been "registered", or actually "used"? */

    private JComboBox statusComboBox;



    /* combo boxes which allow input for the (up to) three name fragments which describe the equipment */

    private JComboBox equipmentFirstComboBox;

    private JComboBox equipmentSecondComboBox;

    private JComboBox equipmentThirdComboBox;



    /* the event being edited */

    private EquipmentAmiEvent event;



    /* true if this is a new event, false if editing an existing event */

    private boolean newEvent;



    /**

     * @param event The event being edited

     * @param newEvent true if the event is new, false if editing an existing event

     */

    public EditEquipmentEventDialog(EquipmentAmiEvent event, boolean newEvent) {

        this.event = event;

        this.newEvent = newEvent;

        setContentPane(contentPane);



        buttonOK.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                onOK();

            }

        });



        buttonCancel.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                onCancel();

            }

        });



        // call onCancel() when cross is clicked

        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);

        addWindowListener(new WindowAdapter() {

            public void windowClosing(WindowEvent e) {

                onCancel();

            }

        });



        // call onCancel() on ESCAPE

        contentPane.registerKeyboardAction(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                onCancel();

            }

        }, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);

    }



    private void onOK() {

        String s1 = equipmentFirstComboBox.getSelectedItem().toString();

        String s2 = equipmentSecondComboBox.getSelectedItem().toString();

        String s3 = equipmentThirdComboBox.getSelectedItem().toString();

        event.setEquipmentName(s1, s2, s3);

        event.setVerb((EquipmentVerb)statusComboBox.getSelectedItem());

        KeyboardFocusManager.getCurrentKeyboardFocusManager().removeKeyEventDispatcher(keyEventDispatcher);

        dispose();

    }



    private void onCancel() {

        if(newEvent) {

            event.setToBeDeleted(true);

        }

        KeyboardFocusManager.getCurrentKeyboardFocusManager().removeKeyEventDispatcher(keyEventDispatcher);

        dispose();

    }





    public void init() {

        setupFocusShortcuts();

        statusComboBox.setModel(new DefaultComboBoxModel(EquipmentVerb.values()));

        equipmentFirstComboBox.setModel(new DefaultComboBoxModel(EquipmentFirstNames.values()));

        equipmentFirstComboBox.setSelectedItem(event.getName1());

        equipmentSecondComboBox.setModel(new DefaultComboBoxModel(EquipmentSecondNames.values()));

        equipmentSecondComboBox.setSelectedItem(event.getName2());

        equipmentThirdComboBox.setModel(new DefaultComboBoxModel(EquipmentThirdNames.values()));

        equipmentThirdComboBox.setSelectedItem(event.getName3());



        setModal(true);

        getRootPane().setDefaultButton(buttonOK);

        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

        this.pack();

        if(newEvent) {

            this.setTitle("Register new equipment");

        } else {

            this.setTitle("Edit equipment details");

        }

        setVisible(true);

    }



    FocusKeyEventDispatcher keyEventDispatcher = new FocusKeyEventDispatcher();

    // map keypresses to Components so we can call component.getFocus() easily

    private void setupFocusShortcuts() {

        keyEventDispatcher.registerKey(KeyEvent.VK_1, equipmentFirstComboBox);

        keyEventDispatcher.registerKey(KeyEvent.VK_2, equipmentSecondComboBox);

        keyEventDispatcher.registerKey(KeyEvent.VK_3, equipmentThirdComboBox);

        keyEventDispatcher.registerKey(KeyEvent.VK_S, statusComboBox);



        KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(keyEventDispatcher);

    }







}