package michal_gornik_ajecia_11;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.LineNumberReader;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

public class Michal_gornik_ajecia_11 {
    private JFrame mainFrame;
    private JFrame mainFrame2;
    private JTextArea textArea;
    private JTextArea textArea2;
    JList list;
    JList styl;
    String fonts[];
    ListSelectionModel lista_modeli;
    ListSelectionModel lista_styli;
    int czcionka=0;
    int rozmiar_czcionki=12;
    int styl_czcionki=0;

    public Michal_gornik_ajecia_11(){
        utworzGUI();
    }



    public static void main(String[] args){
        EventQueue.invokeLater(new Runnable(){
            @Override
            public void run(){
                Michal_gornik_ajecia_11 notatnik=new Michal_gornik_ajecia_11();
                notatnik.showMenuDemo();
            }
        });
    }
    private void utworzGUI(){
        mainFrame=new JFrame("Notatnik");
        mainFrame.setSize(1000,800);

        textArea=new JTextArea();
        textArea.setLineWrap(true);
        textArea.setWrapStyleWord(true);
        textArea.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));

        JScrollPane scrollTextArea = new JScrollPane(textArea, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

        mainFrame.add(scrollTextArea);
        mainFrame.setVisible(true);

        mainFrame.addWindowListener(new WindowAdapter(){
            @Override
            public void windowClosing(WindowEvent windowEvent){
                System.exit(0);
            }
        });
    }

    private void utworzGUI2(){
        mainFrame2=new JFrame("Ustawienia");
        mainFrame2.setLayout(new GridLayout(0,4));
        mainFrame2.setSize(900,400);
        mainFrame2.setVisible(true);

        textArea2=new JTextArea();
        textArea2.setText(textArea.getText());
        textArea2.setLineWrap(true);
        textArea2.setWrapStyleWord(true);
        textArea2.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
        textArea2.setVisible(true);
        textArea2.setSize(200,200);

        JScrollPane scrollTextArea=new JScrollPane(textArea2, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

        mainFrame2.add(scrollTextArea);

        fonts=GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();

        list=new JList(fonts); //data has type Object[]
        list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        list.setLayoutOrientation(JList.VERTICAL);
        list.setVisibleRowCount(-1);

        lista_modeli=list.getSelectionModel();
        lista_modeli.addListSelectionListener(new zatwierdzenie_czcionki());

        JScrollPane listScroller=new JScrollPane(list);
        listScroller.setPreferredSize(new Dimension(200, 200));

        mainFrame2.add(listScroller);

        SpinnerModel rozmiar=new SpinnerNumberModel(12,1,100,1);
        JSpinner rozpietosc=new JSpinner(rozmiar);
        rozpietosc.setPreferredSize(new Dimension(200,40));
        rozpietosc.setFont(rozpietosc.getFont().deriveFont(20f));
        mainFrame2.add(rozpietosc);

        rozpietosc.addChangeListener(new ChangeListener(){
            @Override
            public void stateChanged(ChangeEvent e){
                rozmiar_czcionki=(Integer)rozpietosc.getValue();
                textArea2.setFont(textArea2.getFont().deriveFont((float)rozmiar_czcionki));
            }
        });

        String style[]= {"Plain", "Bold", "Italic"};

        styl=new JList(style); //data has type Object[]
        styl.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        styl.setLayoutOrientation(JList.HORIZONTAL_WRAP);
        styl.setVisibleRowCount(-1);
        styl.setFont(styl.getFont().deriveFont(20f));

        lista_styli=styl.getSelectionModel();
        lista_styli.addListSelectionListener(new zatwierdzanie_stylu());

        mainFrame2.add(styl);

        mainFrame2.addWindowListener(new WindowAdapter(){
            @Override
            public void windowClosing(WindowEvent windowEvent){
                textArea.setFont(new Font(fonts[czcionka], rozmiar_czcionki, styl_czcionki));
                textArea.setText(textArea2.getText());
            }
        });
    }

    private void showMenuDemo(){
        //create a menu bar
        final JMenuBar menuBar=new JMenuBar();

        //create menus
        JMenu fileMenu=new JMenu("File");
        JMenu editMenu=new JMenu("Edit");

        //create menu items
        JMenuItem openMenuItem=new JMenuItem("Open");
        openMenuItem.setActionCommand("Open");

        JMenuItem saveMenuItem=new JMenuItem("Save");
        saveMenuItem.setActionCommand("Save");

        JMenuItem cutMenuItem=new JMenuItem("Options");
        cutMenuItem.setActionCommand("Options");

        MenuItemListener menuItemListener=new MenuItemListener();

        openMenuItem.addActionListener(menuItemListener);
        saveMenuItem.addActionListener(menuItemListener);
        cutMenuItem.addActionListener(menuItemListener);

        //add menu items to menus
        fileMenu.add(openMenuItem);
        fileMenu.add(saveMenuItem);

        editMenu.add(cutMenuItem);

        //add menu to menubar
        menuBar.add(fileMenu);
        menuBar.add(editMenu);

        //add menubar to the frame
        mainFrame.setJMenuBar(menuBar);
        mainFrame.setVisible(true);
    }
    class MenuItemListener implements ActionListener{
        @Override
        public void actionPerformed(ActionEvent e) {
            //System.out.println(e.getActionCommand());

            if(e.getActionCommand()=="Open"){
                JFileChooser fc=new JFileChooser();
                int returnVal=fc.showOpenDialog(fc);

                if (returnVal == JFileChooser.APPROVE_OPTION){
                    File file = fc.getSelectedFile();
                    textArea.setText("");
                    odczyt(file.getPath());
                }
            }

            if(e.getActionCommand()=="Save"){
                JFileChooser fc=new JFileChooser();
                int returnVal=fc.showSaveDialog(fc);

                if(returnVal==JFileChooser.APPROVE_OPTION){
                    File file=fc.getSelectedFile();
                    zapis(file.getPath());
                }
            }

            if(e.getActionCommand()=="Options"){
                EventQueue.invokeLater(new Runnable() {
                    @Override
                    public void run(){
                       utworzGUI2();
                    }
                });
            }
        }
    }

    class zatwierdzenie_czcionki implements ListSelectionListener{
        public void valueChanged(ListSelectionEvent e){
            ListSelectionModel wybrana_czcionka=(ListSelectionModel)e.getSource();

            if(!wybrana_czcionka.isSelectionEmpty()){
                int index=wybrana_czcionka.getAnchorSelectionIndex();

                if(wybrana_czcionka.isSelectedIndex(index)){
                    czcionka=index;
                    textArea2.setFont(new Font(fonts[index], textArea2.getFont().getStyle(), textArea2.getFont().getSize()));
                }
            }
        }
    }
    class zatwierdzanie_stylu implements ListSelectionListener{
        public void valueChanged(ListSelectionEvent e){
            ListSelectionModel wybrany_styl=(ListSelectionModel)e.getSource();

            if(!wybrany_styl.isSelectionEmpty()){
                // Find out which indexes are selected.
                int minIndex=wybrany_styl.getMinSelectionIndex();
                int maxIndex=wybrany_styl.getMaxSelectionIndex();
                for(int i=minIndex; i<=maxIndex; i++){
                    if(wybrany_styl.isSelectedIndex(i)){
                        styl_czcionki=i;
                        if(styl_czcionki==0){
                            textArea2.setFont(textArea2.getFont().deriveFont(Font.PLAIN));
                        }
                        else if(styl_czcionki==1){
                            textArea2.setFont(textArea2.getFont().deriveFont(Font.BOLD));
                        }
                        else{
                            textArea2.setFont(textArea2.getFont().deriveFont(Font.ITALIC));
                        }
                    }
                }
            }
        }
    }
    public void odczyt(String in){
        try{
            FileReader fr=new FileReader(in);
            LineNumberReader lr=new LineNumberReader(fr);
            String line;
            while((line=lr.readLine())!=null){
                textArea.append(line);
            }
            lr.close();
        }catch(IOException ex){
            System.out.println(ex);
        }
    }

    public void zapis(String out){
        try{
            BufferedWriter bw=new BufferedWriter(new FileWriter(out));

            for(String line : textArea.getText().split("\\n")){
                bw.write(line);
            }
            bw.close();
        }catch(IOException ex){
            System.out.println(ex);
        }
    }
}