notebook.java

java游戏编程导学系列二 使用说明 所有范例

package notebook;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class NoteBook extends JFrame {
  JMenuBar jMenuBar1 = new JMenuBar();
  JMenu jMenu1 = new JMenu();
  JMenuItem jMenuItem1 = new JMenuItem();
  JMenuItem jMenuItem2 = new JMenuItem();
  JMenuItem jMenuItem3 = new JMenuItem();
  JMenuItem jMenuItem4 = new JMenuItem();
  JMenu jMenu2 = new JMenu();
  JMenuItem jMenuItem6 = new JMenuItem();
  JMenu jMenu3 = new JMenu();
  JScrollPane jScrollPane1 = new JScrollPane();
  JEditorPane jEditorPane1 = new JEditorPane();
  JMenuItem jMenuItem7 = new JMenuItem();
  JMenuItem jMenuItem5 = new JMenuItem();
  JFileChooser jFileChooser1 = new JFileChooser();
  JColorChooser fontChooser1 = new JColorChooser();

  private boolean dirty;
  private String currFileName;
  BorderLayout borderLayout1 = new BorderLayout();
  public NoteBook() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  public static void main(String[] args) {
    NoteBook noteBook = new NoteBook();
  }


  private void jbInit() throws Exception {
    jMenu1.setText("文 件");
    jMenuItem1.setText("新 建");
    jMenuItem2.setText("打 开");
    jMenuItem2.addActionListener(new NoteBook_jMenuItem2_actionAdapter(this));
    jMenuItem3.setText("保 存");
    jMenuItem3.addActionListener(new NoteBook_jMenuItem3_actionAdapter(this));
    jMenuItem4.setText("另存为");
    jMenuItem4.addActionListener(new NoteBook_jMenuItem4_actionAdapter(this));
    jMenu2.setText("编 辑");
    jMenuItem6.setText("改变背景");
    jMenuItem6.addActionListener(new NoteBook_jMenuItem6_actionAdapter(this));
    jMenu3.setText("关 于");
    jEditorPane1.setText("");
    jScrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    jMenuItem7.setActionCommand("关 于");
    jMenuItem7.setText("关 于");
    jMenuItem7.addActionListener(new NoteBook_jMenuItem7_actionAdapter(this));
    jMenuItem5.setText("退 出");
    this.getContentPane().setLayout(borderLayout1);
    jMenuBar1.add(jMenu1);
    jMenuBar1.add(jMenu2);
    jMenuBar1.add(jMenu3);
    jMenu1.add(jMenuItem1);
    jMenu1.addSeparator();
    jMenu1.add(jMenuItem2);
    jMenu1.add(jMenuItem3);
    jMenu1.add(jMenuItem4);
    jMenu1.addSeparator();
    jMenu1.add(jMenuItem5);
    jMenu2.add(jMenuItem6);
    this.getContentPane().add(jScrollPane1, BorderLayout.CENTER);
    this.getContentPane().add(jMenuBar1, BorderLayout.NORTH);
    jScrollPane1.getViewport().add(jEditorPane1, null);
    jMenu3.add(jMenuItem7);
    this.setLocation(300,200);
    this.setSize(400,300);
    this.setVisible(true);
    jMenuItem5.addActionListener(new NoteBook_jMenuItem5_actionAdapter(this));
    this.setTitle("NoteBook");

  }
  // Open named file; read text from file into jTextArea1; report to statusBar.
 void openFile(String fileName)  {
   try
   {
     // Open a file of the given name.
     File file = new File(fileName);

     // Get the size of the opened file.
     int size = (int)file.length();

     // Set to zero a counter for counting the number of
     // characters that have been read from the file.
     int chars_read = 0;

     // Create an input reader based on the file, so we can read its data.
     // FileReader handles international character encoding conversions.
     FileReader in = new FileReader(file);

     // Create a character array of the size of the file,
     // to use as a data buffer, into which we will read
     // the text data.
     char[] data = new char[size];

     // Read all available characters into the buffer.
     while(in.ready()) {
       // Increment the count for each character read,
       // and accumulate them in the data buffer.
       chars_read += in.read(data, chars_read, size - chars_read);
     }
     in.close();

     // Create a temporary string containing the data,
     // and set the string into the JTextArea.
     jEditorPane1.setText(new String(data, 0, chars_read));

     // Cache the currently opened filename for use at save time...
     this.currFileName = fileName;
     // ...and mark the edit session as being clean
     this.dirty = false;
   }
   catch (IOException e){e.printStackTrace();}
 }

 boolean saveFile() {

  // Handle the case where we don't have a file name yet.
  if (currFileName == null) {
    return saveAsFile();
  }

  try
  {
    // Open a file of the current name.
    File file = new File (currFileName);

    // Create an output writer that will write to that file.
    // FileWriter handles international characters encoding conversions.
    FileWriter out = new FileWriter(file);
    String text = jEditorPane1.getText();
    out.write(text);
    out.close();
    this.dirty = false;

    return true;
  }
  catch (IOException e) {
    e.printStackTrace();
  }
  return false;
}

// Save current file, asking user for new destination name.
// Report to statuBar.
boolean saveAsFile() {
  this.repaint();
  // Use the SAVE version of the dialog, test return for Approve/Cancel
  if (JFileChooser.APPROVE_OPTION == jFileChooser1.showSaveDialog(this)) {
    // Set the current file name to the user's selection,
    // then do a regular saveFile
    currFileName = jFileChooser1.getSelectedFile().getPath();
    //repaints menu after item is selected
    this.repaint();
    return saveFile();
  }
  else {
    this.repaint();
    return false;
  }
}



  void jMenuItem7_actionPerformed(ActionEvent e) {
    AboutDialog ad = new AboutDialog();
  }

  void jMenuItem2_actionPerformed(ActionEvent e) {
    jFileChooser1.showOpenDialog(this);
    openFile(jFileChooser1.getSelectedFile().getPath());
  }

  void jMenuItem3_actionPerformed(ActionEvent e) {

    saveFile();
  }

  void jMenuItem4_actionPerformed(ActionEvent e) {

    saveAsFile();

  }

  void jMenuItem6_actionPerformed(ActionEvent e) {
    // Handle the "Background Color" menu item
   Color color = JColorChooser.showDialog(this,"Background Color",jEditorPane1.getBackground());
   if (color != null) {
      jEditorPane1.setBackground(color);
   }
   //repaints menu after item is selected
   this.repaint();


  }

  void jMenuItem5_actionPerformed(ActionEvent e) {
    this.dispose();

  }

}

class NoteBook_jMenuItem7_actionAdapter implements java.awt.event.ActionListener {
  NoteBook adaptee;

  NoteBook_jMenuItem7_actionAdapter(NoteBook adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItem7_actionPerformed(e);
  }
}

class NoteBook_jMenuItem2_actionAdapter implements java.awt.event.ActionListener {
  NoteBook adaptee;

  NoteBook_jMenuItem2_actionAdapter(NoteBook adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItem2_actionPerformed(e);
  }
}

class NoteBook_jMenuItem3_actionAdapter implements java.awt.event.ActionListener {
  NoteBook adaptee;

  NoteBook_jMenuItem3_actionAdapter(NoteBook adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItem3_actionPerformed(e);
  }
}

class NoteBook_jMenuItem4_actionAdapter implements java.awt.event.ActionListener {
  NoteBook adaptee;

  NoteBook_jMenuItem4_actionAdapter(NoteBook adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItem4_actionPerformed(e);
  }
}

class NoteBook_jMenuItem6_actionAdapter implements java.awt.event.ActionListener {
  NoteBook adaptee;

  NoteBook_jMenuItem6_actionAdapter(NoteBook adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItem6_actionPerformed(e);
  }
}

class NoteBook_jMenuItem5_actionAdapter implements java.awt.event.ActionListener {
  NoteBook adaptee;

  NoteBook_jMenuItem5_actionAdapter(NoteBook adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItem5_actionPerformed(e);
  }
}