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  1. /*
  2.  * To change this license header, choose License Headers in Project Properties.
  3.  * To change this template file, choose Tools | Templates
  4.  * and open the template in the editor.
  5.  */
  6. package edytortekstu;
  7.  
  8. import java.awt.Font;
  9. import java.awt.event.ActionEvent;
  10. import java.awt.event.ActionListener;
  11. import java.io.BufferedReader;
  12. import java.io.BufferedWriter;
  13. import java.io.File;
  14. import java.io.FileNotFoundException;
  15. import java.io.FileReader;
  16. import java.io.FileWriter;
  17. import java.io.IOException;
  18. import java.util.ArrayList;
  19. import java.util.logging.Level;
  20. import java.util.logging.Logger;
  21. import javax.swing.JFileChooser;
  22. import javax.swing.JMenuItem;
  23. import javax.swing.text.BadLocationException;
  24. import javax.swing.text.Utilities;
  25.  
  26. /**
  27.  *
  28.  * @author Artur
  29.  */
  30. public class EdytorGUI extends javax.swing.JFrame {
  31. ArrayList<ArrayList<String>> page = new ArrayList<ArrayList<String>>(); //implementacja tablicowa listy przechowującej listy(linie)
  32. ArrayList<String> line = new ArrayList<String>(); //liosta przechowująca ciagi znaków, reprezentuje pojedyncza linie
  33.  
  34. /**
  35.      * Creates new form EdytorGUI
  36.      */
  37.     public EdytorGUI() {
  38.         initComponents();
  39.         JMenuItem saveItem = new JMenuItem(); 
  40.         saveItem.setText("Zapisz plik");
  41.         saveItem.addActionListener(new ActionListener() { //listener wywoływany w momencie klikniecia na "zapisz plik"
  42.             @Override
  43.             public void actionPerformed(ActionEvent e) {
  44.                 String filePath="";
  45.                 JFileChooser fileChooser = new JFileChooser();//filechooser, okno za pomoca ktorego wybieramy pliki
  46.                 fileChooser.showSaveDialog(EdytorGUI.this);
  47.                 filePath=fileChooser.getSelectedFile().getAbsolutePath();//pobranie sciezki calkowitej do pliku
  48.                 saveFile(filePath);
  49.             }
  50.         });
  51.         JMenuItem openItem = new JMenuItem();
  52.         openItem.setText("Otwórz plik");
  53.         openItem.addActionListener(new ActionListener() {//listener wywoływany w momencie klikniecia na "otwórz plik"
  54.  
  55.             @Override
  56.             public void actionPerformed(ActionEvent e) {
  57.                 String filePath="";
  58.                 JFileChooser fileChooser = new JFileChooser(); //filechooser, okno za pomoca ktorego wybieramy pliki
  59.                 fileChooser.showOpenDialog(EdytorGUI.this);
  60.                 filePath=fileChooser.getSelectedFile().getAbsolutePath();
  61.                 openFile(filePath);
  62.             }
  63.         });
  64.         jMenu1.add(openItem);
  65.         jMenu1.add(saveItem);
  66.     }
  67.     //metoda zapisu do pliku
  68.     private void saveFile(String path){
  69.         File f = new File(path);
  70.     try {
  71.         FileWriter fw = new FileWriter(f);
  72.         BufferedWriter bw = new BufferedWriter(fw);
  73.         for(int i=0; i<page.size(); i++){
  74.             for(int j=0; j<page.get(i).size(); j++){
  75.                 bw.write(page.get(i).get(j));  //dwie petle, zewnetrzna po linijkach, wewnetrzna po znakach
  76.             }
  77.             bw.newLine(); //wstawienie nowej linii do pliku
  78.         }
  79.         bw.close();
  80.     } catch (IOException ex) {
  81.         Logger.getLogger(EdytorGUI.class.getName()).log(Level.SEVERE, null, ex);
  82.     }
  83.     }
  84.     //metoda wczytania z pliku
  85.     private void openFile(String path){
  86.         File f = new File(path);
  87.     try {
  88.         FileReader fr = new FileReader(f);
  89.         BufferedReader br = new BufferedReader(fr);
  90.         String s;
  91.         while((s = br.readLine())!=null){ //wczytuj do konca pliku po jednej linii
  92.         char[] tmpLine=s.toCharArray();
  93.         for(int i=0;i<tmpLine.length;i++){
  94.             line.add(String.valueOf(tmpLine[i])); //dodaj do listy
  95.             jTextArea1.append(String.valueOf(tmpLine[i])); //dodaj do textArea
  96.         }
  97.         page.add(new ArrayList(line)); //dodaj liste do listy(reprezentujacej strone)
  98.         jTextArea1.append("\n"); // dodaj znak nowej linii do TextArea po wczytanniu linnii z pliku
  99.         line.clear(); 
  100.         }
  101.         br.close(); //zamkniecie pliku
  102.     } catch (FileNotFoundException ex) {
  103.         Logger.getLogger(EdytorGUI.class.getName()).log(Level.SEVERE, null, ex);
  104.     } catch (IOException ex) {
  105.         Logger.getLogger(EdytorGUI.class.getName()).log(Level.SEVERE, null, ex);
  106.     }
  107.     }
  108.     /**
  109.      * This method is called from within the constructor to initialize the form.
  110.      * WARNING: Do NOT modify this code. The content of this method is always
  111.      * regenerated by the Form Editor.
  112.      */
  113.     @SuppressWarnings("unchecked")
  114.     // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
  115.     private void initComponents() {
  116.  
  117.         jScrollPane1 = new javax.swing.JScrollPane();
  118.         jTextArea1 = new javax.swing.JTextArea();
  119.         jPanel1 = new javax.swing.JPanel();
  120.         jButton1 = new javax.swing.JButton();
  121.         jMenuBar1 = new javax.swing.JMenuBar();
  122.         jMenu1 = new javax.swing.JMenu();
  123.  
  124.         setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
  125.  
  126.         jTextArea1.setColumns(20);
  127.         jTextArea1.setRows(5);
  128.         jTextArea1.addKeyListener(new java.awt.event.KeyAdapter() {
  129.             public void keyTyped(java.awt.event.KeyEvent evt) {
  130.                 jTextArea1KeyTyped(evt);
  131.             }
  132.         });
  133.         jScrollPane1.setViewportView(jTextArea1);
  134.  
  135.         jPanel1.setBackground(new java.awt.Color(102, 102, 102));
  136.         jPanel1.setForeground(new java.awt.Color(102, 102, 102));
  137.  
  138.         jButton1.setText("B");
  139.         jButton1.addActionListener(new java.awt.event.ActionListener() {
  140.             public void actionPerformed(java.awt.event.ActionEvent evt) {
  141.                 jButton1ActionPerformed(evt);
  142.             }
  143.         });
  144.  
  145.         javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
  146.         jPanel1.setLayout(jPanel1Layout);
  147.         jPanel1Layout.setHorizontalGroup(
  148.             jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  149.             .addGroup(jPanel1Layout.createSequentialGroup()
  150.                 .addContainerGap()
  151.                 .addComponent(jButton1)
  152.                 .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
  153.         );
  154.         jPanel1Layout.setVerticalGroup(
  155.             jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  156.             .addGroup(jPanel1Layout.createSequentialGroup()
  157.                 .addComponent(jButton1)
  158.                 .addGap(0, 13, Short.MAX_VALUE))
  159.         );
  160.  
  161.         jMenu1.setText("File");
  162.         jMenu1.addActionListener(new java.awt.event.ActionListener() {
  163.             public void actionPerformed(java.awt.event.ActionEvent evt) {
  164.                 jMenu1ActionPerformed(evt);
  165.             }
  166.         });
  167.         jMenuBar1.add(jMenu1);
  168.  
  169.         setJMenuBar(jMenuBar1);
  170.  
  171.         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
  172.         getContentPane().setLayout(layout);
  173.         layout.setHorizontalGroup(
  174.             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  175.             .addGroup(layout.createSequentialGroup()
  176.                 .addContainerGap()
  177.                 .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  178.                     .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 619, Short.MAX_VALUE)
  179.                     .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
  180.                 .addContainerGap())
  181.         );
  182.         layout.setVerticalGroup(
  183.             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  184.             .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
  185.                 .addContainerGap()
  186.                 .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
  187.                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
  188.                 .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 489, Short.MAX_VALUE)
  189.                 .addContainerGap())
  190.         );
  191.  
  192.         pack();
  193.     }// </editor-fold>//GEN-END:initComponents
  194.  
  195.     //metoda wywoływana podczas wprowadzenia znaku do textArea
  196.     private void jTextArea1KeyTyped(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_jTextArea1KeyTyped
  197.  
  198.         line.add(String.valueOf(evt.getKeyChar())); //dodanie pojedynczego znaku do listy, rzutowanie na String
  199.         if(evt.getKeyChar()=='\n'){ //jesli znak nowej linii
  200.             page.add(new ArrayList(line)); // dodajemy liste zawierajaca znaki jako element listy reprezentującej strone
  201.             line.clear(); // czyscimy liste(linie)
  202.         }else{
  203.             if(!page.isEmpty()){
  204.                 page.set(page.size()-1, new ArrayList(line)); //aktualizowanie elementu page, przydatne dla ostatniej linijki
  205.             }else{
  206.                 page.add(page.size(), new ArrayList(line)); //aktualizowanie dla pierwszego znaku pierwszej linii
  207.             }
  208.         }
  209.         if(evt.getKeyChar()=='\b'){ //usuwanie z listy, jesli wcisnieto klawisz backspace
  210.             int lineNumber=0; // ktora lista
  211.             int colNum=0; //pozycja w liscie
  212.             try {
  213.                 int caretPos = jTextArea1.getCaretPosition();
  214.                 int offset = Utilities.getRowStart(jTextArea1, caretPos);
  215.                 colNum = caretPos - offset;
  216.                 lineNumber=jTextArea1.getLineOfOffset(jTextArea1.getCaretPosition());
  217.             } catch (BadLocationException ex) {
  218.                 Logger.getLogger(EdytorGUI.class.getName()).log(Level.SEVERE, null, ex);
  219.             }
  220.             page.get(lineNumber).remove(colNum);
  221.         }
  222.     }//GEN-LAST:event_jTextArea1KeyTyped
  223.  
  224.     private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenu1ActionPerformed
  225.         // TODO add your handling code here:
  226.     }//GEN-LAST:event_jMenu1ActionPerformed
  227.  
  228.     private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
  229.         Font font = jTextArea1.getFont();  
  230.         jTextArea1.setFont(font.deriveFont(Font.BOLD));
  231.  
  232.     }//GEN-LAST:event_jButton1ActionPerformed
  233.  
  234.     /**
  235.      * @param args the command line arguments
  236.      */
  237.     public static void main(String args[]) {
  238.         /* Set the Nimbus look and feel */
  239.         //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
  240.         /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
  241.          * For details see http://d...content-available-to-author-only...e.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
  242.          */
  243.         try {
  244.             for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
  245.                 if ("Nimbus".equals(info.getName())) {
  246.                     javax.swing.UIManager.setLookAndFeel(info.getClassName());
  247.                     break;
  248.                 }
  249.             }
  250.         } catch (ClassNotFoundException ex) {
  251.             java.util.logging.Logger.getLogger(EdytorGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  252.         } catch (InstantiationException ex) {
  253.             java.util.logging.Logger.getLogger(EdytorGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  254.         } catch (IllegalAccessException ex) {
  255.             java.util.logging.Logger.getLogger(EdytorGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  256.         } catch (javax.swing.UnsupportedLookAndFeelException ex) {
  257.             java.util.logging.Logger.getLogger(EdytorGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  258.         }
  259.         //</editor-fold>
  260.  
  261.         /* Create and display the form */
  262.         java.awt.EventQueue.invokeLater(new Runnable() {
  263.             public void run() {
  264.                 new EdytorGUI().setVisible(true);
  265.             }
  266.         });
  267.     }
  268.  
  269.     // Variables declaration - do not modify//GEN-BEGIN:variables
  270.     private javax.swing.JButton jButton1;
  271.     private javax.swing.JMenu jMenu1;
  272.     private javax.swing.JMenuBar jMenuBar1;
  273.     private javax.swing.JPanel jPanel1;
  274.     private javax.swing.JScrollPane jScrollPane1;
  275.     private javax.swing.JTextArea jTextArea1;
  276.     // End of variables declaration//GEN-END:variables
  277. }
  278.  
Compilation error #stdin compilation error #stdout 0s 0KB
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Standard input is empty
compilation info 
Main.java:30: error: class EdytorGUI is public, should be declared in a file named EdytorGUI.java
public class EdytorGUI extends javax.swing.JFrame {
       ^
Note: Main.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error
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Standard output is empty
https://ideone.com/n7noK8
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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