GrafikChat/src/grafikchat/controller/GrafikController.java

package grafikchat.controller;

import grafikchat.model.ChatModel;
import grafikchat.view.ChatView;
import java.awt.Point;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.logging.Logger;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import grafikchat.model.Figures;
import grafikchat.model.TransceiverData;
import grafikchat.model.TransceiverDataEvent;
import grafikchat.ohmlogger.OhmLogger;

/**
 * Handle events from mouse and keyboard
 * 
 * @author marian
 */
public class GrafikController implements MouseMotionListener, MouseListener, KeyListener
{
    private final ChatView view;
    private final ChatModel model;
    private boolean clicked;
    private final static Logger logger = OhmLogger.getLogger();

    /**
     * Constructor
     * @param view UI of zeichenprogramm
     * @param model Model of zeichenprogramm
     */
    public GrafikController(ChatView view, ChatModel model)
    {
        this.view = view;
        this.model = model;
        
        this.clicked = false;
    }

    /**
     * Register events for mouse and keyboard
     */
    public void registerEvents()
    {
        view.getGvDrawPane().addMouseMotionListener(this);
        view.getGvDrawPane().addMouseListener(this);
        view.getGvDrawPane().addKeyListener(this);
        view.getGvDrawPane().setFocusable(true);
        
        view.addKeyListener(this);
        view.setFocusable(true);
    }

    @Override
    public void mouseDragged(MouseEvent evt)
    {
        if (clicked) {
            Point p = evt.getPoint();
            model.getIntern().addPoint(p);
            model.sendMessage(new TransceiverData(TransceiverDataEvent.NEWPOINT, p));
            view.getGvDrawPane().drawPoint(true);
        }
    }

    @Override
    public void mouseMoved(MouseEvent e) {}

    @Override
    public void mouseClicked(MouseEvent e) {}

    @Override
    public void mousePressed(MouseEvent e)
    {
        if (e.getButton() == MouseEvent.BUTTON1) {
            logger.info("Mouse pressed");
            model.getIntern().newFigure();
            model.sendMessage(new TransceiverData(TransceiverDataEvent.NEWFIGURE, null));
            this.clicked = true;
        }
    }

    @Override
    public void mouseReleased(MouseEvent e)
    {
        if (e.getButton() == MouseEvent.BUTTON1) {
            logger.info("Mouse released");
            this.clicked = false;
        }
    }

    @Override
    public void mouseEntered(MouseEvent e) {}

    @Override
    public void mouseExited(MouseEvent e) {}
    
    /**
     * Save current graphics to file
     * @return True if successful, false otherwise
     */
    public boolean saveToFile()
    {
        JFileChooser fc = new JFileChooser();
        fc.setCurrentDirectory(new File(model.getFilename()));
        int returnVal = fc.showSaveDialog(view);

        if (returnVal == JFileChooser.APPROVE_OPTION) {
            File f = fc.getSelectedFile();
            if(!f.exists()) { 
                try {
                    f.createNewFile();
                } catch (IOException e) {
                    JOptionPane.showMessageDialog(view, "Datei konnte nicht erstellt werden.", "Warnung", JOptionPane.WARNING_MESSAGE);
                    return false;
                }
            }
        } else {
            JOptionPane.showMessageDialog(view, "Es wurde keine Datei zum speichern ausgewählt.", "Warnung", JOptionPane.WARNING_MESSAGE);
            return false;
        }
        model.setFilename(fc.getSelectedFile().getPath());

        
        try {
            FileOutputStream fos = new FileOutputStream(model.getFilename());
            try (ObjectOutputStream oos = new ObjectOutputStream(fos)) {
                ArrayList<Figures> list = new ArrayList<>();
                list.add(model.getIntern());
                list.add(model.getExtern());
                oos.writeObject(list);
            }
        } catch (IOException e) {
            JOptionPane.showMessageDialog(view, "Grafik konnte nicht gespeichert werden.", "Warning", JOptionPane.WARNING_MESSAGE);
        }
        
        JOptionPane.showMessageDialog(view, "Grafik erfolgreich gespeichert.", "Information", JOptionPane.INFORMATION_MESSAGE);
        
        return true;
    }
    
    /**
     * Read graphics from file
     * @return True if successful, false otherwise
     */
    public boolean readFromFile()
    {
        JFileChooser fc = new JFileChooser();
        fc.setCurrentDirectory(new File(model.getFilename()));
        int returnVal = fc.showOpenDialog(view);
        
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            File f = fc.getSelectedFile();
            if(!f.exists()) { 
                try {
                    f.createNewFile();
                } catch (IOException e) {
                    JOptionPane.showMessageDialog(view, "Datei konnte nicht erstellt werden.", "Warnung", JOptionPane.WARNING_MESSAGE);
                    return false;
                }
            }
            
            String filepath = f.getPath();
            ArrayList<Figures> d;
            FileInputStream is;
            
            try {
                is = new FileInputStream(filepath);
            } catch (IOException e) {
		JOptionPane.showMessageDialog(view, "Datei wurde nicht gefunden.", "Warnung", JOptionPane.WARNING_MESSAGE);
                return false;
            }
            
            try {
                ObjectInputStream ois = new ObjectInputStream(is);
                d = (ArrayList<Figures>)ois.readObject();
                model.getIntern().setFigures(d.get(0).getFigures());
                model.getExtern().setFigures(d.get(1).getFigures());
                view.repaint();
                model.sendMessage(new TransceiverData(TransceiverDataEvent.REPAINT, d));
            } catch (ClassNotFoundException | IOException e) {
                JOptionPane.showMessageDialog(view, "Leeres Adressbuch geöffnet.", "Warnung", JOptionPane.INFORMATION_MESSAGE);
            }
                 
            model.setFilename(filepath);
        }
        
        return true;
    }

    @Override
    public void keyTyped(KeyEvent ke)
    {
    }

    @Override
    public void keyPressed(KeyEvent ke)
    {
    }

    @Override
    public void keyReleased(KeyEvent ke)
    {
        char c = ke.getKeyChar();
        switch (c)
        {
            case 's': 
                saveToFile();
                break;
            case 'o':
                readFromFile();
                break;
            case 'p':
                view.getGvDrawPane().doPrint();
                break;                
        }
    }


}