book.java

这是一个用Java编写的类似Windows的记事本

        p3.add(cancel);
        jf.add(p1,BorderLayout.NORTH);
        jf.add(p2,BorderLayout.CENTER);
        jf.add(p3,BorderLayout.SOUTH);
        jf.setSize(360,200);
        jf.setLocation(300,200);
        jf.setVisible(true);
        jf.setResizable(false);
        addEventHandler();
    }
    private void addEventHandler(){
        ok.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                String n1 = (String)fontName.getSelectedItem();
                int  n2 = fontStyle.getSelectedIndex();
                String n3 = (String)fontSize.getSelectedItem();
                textArea.setFont(new Font(n1,n2,Integer.parseInt(n3)));
            }
        });
        cancel.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                jf.setVisible(false);//
            }
        }        
        );
    }
    }//GEN-LAST:event_FontActionPerformed

    
    private void SaveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_SaveActionPerformed
        if(!hasChange())
            return;
        FileWriter output=null;
        if(fileName!=null&&fileName.exists()){
            try{
                output=new FileWriter(fileName);
                output.write(Text.getText());
            }
            catch(IOException e){
                JOptionPane.showMessageDialog(this, "文件写入错误,没有保存");
            }
            finally{
                try{
                    output.close();
                }
                catch(IOException ee){}
                output=null;
            }
                isChange=false;
        }
            else 
                SaveAsActionPerformed(evt);
       // TODO add your handling code here:
    }//GEN-LAST:event_SaveActionPerformed

    private void SaveAsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_SaveAsActionPerformed
        if(!hasChange())
         return;
      FileWriter output=null;
      int ret=fileChooser.showSaveDialog(this);
      if(ret!=JFileChooser.APPROVE_OPTION){
          isChange=true;
          return;
      }
      fileName=fileChooser.getSelectedFile();
      try{
          output=new FileWriter(fileName);
          output.write(Text.getText());
      }
      catch(IOException e){
          JOptionPane.showMessageDialog(this, "文件写入错误,没有保存");
      }
      finally{
          try{
              output.close();
          }
          catch(IOException ee){}
          output=null;
  }  
      isChange=false;
      return;
        // TODO add your handling code here:
    }//GEN-LAST:event_SaveAsActionPerformed

    private void bRedoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_bRedoActionPerformed
       RedoActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_bRedoActionPerformed

    private void BackColorActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BackColorActionPerformed
        Color color=JColorChooser.showDialog(Text, "选择颜色", Color.white);
        Text.setBackground(color);
        
        // TODO add your handling code here:
    }//GEN-LAST:event_BackColorActionPerformed

    //显示时间:
    private void TimeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_TimeActionPerformed
         
    SimpleDateFormat dateFormat = new SimpleDateFormat( "yyyy'年'MM'月'dd'日' HH:mm:ss");
            Calendar today = Calendar.getInstance();
            String timeDate = dateFormat.format(today.getTime());
            jLabel1.setText(timeDate);
        // TODO add your handling code here:
    }//GEN-LAST:event_TimeActionPerformed

   
    
    
    //弹出式菜单1:
    private void TextMousePressed(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_TextMousePressed
        if(evt.getModifiers()==InputEvent.BUTTON3_MASK)
            menu.show(Text,evt.getX(),evt.getY());
        // TODO add your handling code here:
    }//GEN-LAST:event_TextMousePressed

    //打印:
    private void PrintActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_PrintActionPerformed
        try {
                attributes = new HashPrintRequestAttributeSet();
                PrinterJob job = PrinterJob.getPrinterJob();
                if (job.printDialog())
                    job.print(attributes);
            } catch (Exception ex) {
                JOptionPane.showMessageDialog(this, evt);
            }
        
        // TODO add your handling code here:
    }//GEN-LAST:event_PrintActionPerformed

    //弹出式菜单2:
    private void itemUndoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemUndoActionPerformed
       UndoActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemUndoActionPerformed

    private void itemRedoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemRedoActionPerformed
        RedoActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemRedoActionPerformed

    private void itemCopyActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemCopyActionPerformed
        CopyActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemCopyActionPerformed

    private void itemCutActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemCutActionPerformed
       CutActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemCutActionPerformed

    private void itemPasteActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemPasteActionPerformed
        PasteActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemPasteActionPerformed

    private void itemDeleteActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemDeleteActionPerformed
        DeleteActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemDeleteActionPerformed

    private void itemSelectActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_itemSelectActionPerformed
        SelectAllActionPerformed(evt);
        // TODO add your handling code here:
    }//GEN-LAST:event_itemSelectActionPerformed
    
    private StyledDocument styledDoc=new DefaultStyledDocument(); 
    private void InsertActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_InsertActionPerformed
         JFileChooser open = new JFileChooser(); // 查找文件 
                 open.addChoosableFileFilter(new JpgFileFilter()); 
                 open.addChoosableFileFilter(new GifFileFilter()); 
                int state=open.showOpenDialog(Print); 
                File file=open.getSelectedFile(); 
                if(file!=null&&state==JFileChooser.APPROVE_OPTION)
                   
                insertIcon(file); // 插入图片  
                
        // TODO add your handling code here:
    }//GEN-LAST:event_InsertActionPerformed
   

    public void insertIcon(File file) {          //插入图片的方法 
        Text.setCaretPosition(styledDoc.getLength()); // 设置插入位置 
        //Text.insertIcon(new ImageIcon(file.getPath())); // 插入图片 
    } 
    
    public void insertDoc(StyledDocument styledDoc, String content,String currentStyle) { 
        try { 
            int len=Text.getSelectedText().length(); 
            styledDoc.insertString(Text.getCaretPosition(),content,styledDoc.getStyle(currentStyle)); 
            Text.replaceSelection(""); 
            Text.select(Text.getCaretPosition()-len,Text.getCaretPosition()); 
        } catch (Exception e) {} 
     
 
   }
/*********用干文件过滤的外部类***********/ 
   class GifFileFilter extends FileFilter{ 
        public String getDescription(){ 
        return "gif源文件(*.gif)"; 
    } 
    public boolean accept(File file) { 
        return  file.getName().toLowerCase().endsWith(".gif"); 
    } 
} 
  class JpgFileFilter extends FileFilter{ 
    public String getDescription(){ 
        return "jpg源文件(*.jpg)"; 
    } 
    public boolean accept(File file) { 
        return  file.getName().toLowerCase().endsWith(".jpg"); 
    } 
} 
class JavaFileFilter  extends FileFilter{ 
    public String getDescription() { 
        return "java源文件(*.java)"; 
    } 
    public boolean accept(File file) { 
        return file.getName().toLowerCase().endsWith(".java"); 
    } 
} 
  class TxtFileFilter extends FileFilter{ 
    public String getDescription() { 
        return "文本文档(*.txt)"; 
    } 
    public boolean accept(File file) { 
        return file.getName().toLowerCase().endsWith(".txt"); 
    } 
} 
   
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Book().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JMenuItem About;
    private javax.swing.JMenuItem BackColor;
    private javax.swing.JMenuItem Copy;
    private javax.swing.JMenuItem Cut;
    private javax.swing.JMenuItem Delete;
    private javax.swing.JMenu Edit;
    private javax.swing.JMenu File;
    private javax.swing.JMenuItem Font;
    private javax.swing.JMenu Form;
    private javax.swing.JMenu Help;
    private javax.swing.JMenuItem Insert;
    private javax.swing.JLabel Label;
    private javax.swing.JMenuItem New;
    private javax.swing.JMenuItem Open;
    private javax.swing.JMenuItem Paste;
    private javax.swing.JMenuItem Print;
    private javax.swing.JMenuItem Quit;
    private javax.swing.JMenuItem Redo;
    private javax.swing.JMenuItem Save;
    private javax.swing.JMenuItem SaveAs;
    private javax.swing.JMenuItem Search;
    private javax.swing.JMenuItem SelectAll;
    private javax.swing.JMenuItem SetColor;
    private javax.swing.JTextArea Text;
    private javax.swing.JMenuItem Time;
    private javax.swing.JMenuItem Undo;
    private javax.swing.JButton bCopy;
    private javax.swing.JButton bCut;
    private javax.swing.JButton bDelete;
    private javax.swing.JButton bNew;
    private javax.swing.JButton bOpen;
    private javax.swing.JButton bPaste;
    private javax.swing.JButton bRedo;
    private javax.swing.JButton bSave;
    private javax.swing.JButton bUndo;
    private javax.swing.JMenuItem itemCopy;
    private javax.swing.JMenuItem itemCut;
    private javax.swing.JMenuItem itemDelete;
    private javax.swing.JMenuItem itemPaste;
    private javax.swing.JMenuItem itemRedo;
    private javax.swing.JMenuItem itemSelect;
    private javax.swing.JMenuItem itemUndo;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JSeparator jSeparator2;
    private javax.swing.JSeparator jSeparator3;
    private javax.swing.JSeparator jSeparator4;
    private javax.swing.JSeparator jSeparator5;
    private javax.swing.JToolBar jToolBar1;
    private javax.swing.JToolBar jToolBar2;
    private javax.swing.JPopupMenu menu;
    // End of variables declaration//GEN-END:variables
   
}