import java.awt.EventQueue;
import java.awt.HeadlessException;
import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;

import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JOptionPane;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JTextArea;
import javax.swing.filechooser.FileNameExtensionFilter;

import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.datatransfer.*;

public class moja {

    private JFrame frame;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    moja window = new moja();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public moja() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame("Moj Notepad");
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JMenuBar menuBar = new JMenuBar();
        frame.setJMenuBar(menuBar);

        JButton btnNewButton = new JButton("Otvori");

        menuBar.add(btnNewButton);
        JTextArea textArea1 = new JTextArea();
        textArea1.setWrapStyleWord(true);
        textArea1.setLineWrap(true);
        frame.getContentPane().add(textArea1, BorderLayout.CENTER);
        JButton btnNewButton_1 = new JButton("Copy");
        btnNewButton_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                String myString = textArea1.getSelectedText();
                StringSelection stringSelection = new StringSelection(myString);
                Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
                clipboard.setContents(stringSelection, null);
            }
        });
        menuBar.add(btnNewButton_1);

        JButton btnNewButton_2 = new JButton("Paste");
        btnNewButton_2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    String data = (String) Toolkit.getDefaultToolkit().getSystemClipboard().getData(DataFlavor.stringFlavor);
                    textArea1.setText(textArea1.getText() + data);
                } catch (HeadlessException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (UnsupportedFlavorException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }


            }
        });
        menuBar.add(btnNewButton_2);

        JButton btnNewButton_3 = new JButton("About");
        btnNewButton_3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                 JOptionPane.showMessageDialog(null, "Kreirao Jovica ;)");

            }
        });
        menuBar.add(btnNewButton_3);
        btnNewButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JTextArea textArea1 = new JTextArea();
                JFileChooser fileChooser = new JFileChooser();
                FileNameExtensionFilter filter = new FileNameExtensionFilter("TEXT FILES", "txt", "text");
                fileChooser.setFileFilter(filter);
                fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
                int result = fileChooser.showOpenDialog(fileChooser);
                if (result == JFileChooser.APPROVE_OPTION) {
                  File selectedFile = fileChooser.getSelectedFile();



                    File file = new File(selectedFile.getAbsolutePath());
                    StringBuffer contents = new StringBuffer();
                    BufferedReader reader = null;
                    textArea1.setText("");
                    try {
                        reader = new BufferedReader(new FileReader(file));
                        String text = null;

                        // repeat until all lines is read
                        while ((text = reader.readLine()) != null) {
                            contents.append(text)
                                .append(System.getProperty(
                                    "line.separator"));
                        }
                    } catch (FileNotFoundException e1) {
                        e1.printStackTrace();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    } finally {
                        try {
                            if (reader != null) {
                                reader.close();
                            }
                        } catch (IOException e1) {
                            e1.printStackTrace();
                        }
                    }

                    textArea1.setText(textArea1.getText() + contents);
                }

            }
        });


    }

}