notepad.java

多功能编辑器（java）（1） 能够实现基本的文字录入及发布； （2） 能够对录入文字进行字体

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

import java.net.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.text.StyledDocument;

import java.net.URL;
//import javax.swing.ImageIcon;

public class Notepad extends JFrame{
   
	private final Color colorvalues[] = { Color.black, Color.blue, Color.red, Color.green };   //定义颜色数组
    private final Color backcolor[] = { Color.white, Color.GRAY, Color.RED, Color.BLUE ,Color.ORANGE,Color.GREEN};   //定义颜色数组
	
    String styleNames[] = { "Bold", "Italic" };//定义风格数组
    String  filepath="";
    String fontNames[] = { "宋体", "华文行楷", "隶书" };//字体数组
    String[] sizeString = new String[30];//字号数组
    String colors[] = { "Black", "Blue", "Red", "Green" };
    String[] str_BackColor = { "无色", "灰色", "淡红", "淡蓝", "淡黄", "淡绿" };
    int[] size = new int[30];//与字号数组对应的字号整数，用于设置文字大小

    
   private JRadioButtonMenuItem colorItems[], fonts[];
   private JCheckBoxMenuItem styleItems[];
   private JTextPane displayText;//定义文本编辑区
   private ButtonGroup fontGroup, colorGroup;//字体组，跟字色组
   private int style;//字体风格
   private JScrollPane scroll;//为文本编辑区提供滚动条
   private String selectText = "";//存放文本编辑区中选中的文本内容
   private JComboBox styleBox,fontBox,sizeBox,fontColor;//工具栏
   private JPanel   pane;
   private JTextPane text = null; 
   private JComboBox fontBackColor = null; // 文字背景颜色
   private Box box = null; // 放输入组件的容器
   private StyledDocument doc = null;
   private JButton b_insert = null, b_remove = null, b_icon = null,b_link=null; // 插入按钮;清除按钮;插入图片按钮
   // set up GUI
   public Notepad()
   {
      super( "记事本" );//标题  
      
      
      try { // 使用Windows的界面风格
    	   UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    	  } catch (Exception e) {
    	   e.printStackTrace();
    	  }
    	  
    	  text = new JTextPane();
    	  displayText = new JTextPane();
    	  text.setEditable(false); // 不可录入
    	  
    	  JScrollPane scrollPane = new JScrollPane(text);
    	 
   
    	  fontBox = new JComboBox(fontNames); // 字体名称
    	  fontColor = new JComboBox( colors); // 颜色
    	  fontBackColor = new JComboBox(str_BackColor); // 背景颜色
    	  b_insert = new JButton("发布"); // 插入
    	  
    	  b_icon = new JButton("图片"); // 插入图片
    	  b_link=new JButton("超链接");
    	 
    //发布到外面
    	  b_insert.addActionListener(new ActionListener() { 
     	     public void actionPerformed(ActionEvent e) {
     	      
     	    	text.setFont( new Font( displayText.getFont().getName(),
     	        displayText.getFont().getStyle(), displayText.getFont().getSize() ) );

     	    	 Document docm=text.getStyledDocument();
     	    	
     	    	 SimpleAttributeSet attrset = new SimpleAttributeSet();
     	    
     	    	text.setForeground(displayText.getForeground());
     	       
     	        insert(displayText.getText(), attrset,docm);
     	        
     	        if(!filepath.equals(""))
     	        {
     	        	text.setCaretPosition(docm.getLength()); // 设置插入位置
     	        	text.insertIcon(new ImageIcon(filepath)); // 插入图片
    
     	        	insert("",new SimpleAttributeSet(),docm);// 这样做可以换行
     	        	filepath="";
		
     	        }
		
     	        displayText.setText("");
     	       
     	    	 }
     	    });
    	
    	 box = Box.createVerticalBox(); // 竖结构
    	  Box box_1 = Box.createHorizontalBox(); // 横结构
    	  Box box_2 = Box.createHorizontalBox(); // 横结构
    	  box.add(box_1);
    	  box.add(Box.createVerticalStrut(8)); // 两行的间距
    	  box.add(box_2);
    	  
    	  box.setBorder(BorderFactory.createEmptyBorder(8, 8, 16, 16)); // 8个的边距
    	 
   //初始化字体大小数组
      
    	  for(int i = 0 ; i<size.length;i++)
    	  {
    		  sizeString[i] = "" + (i+5) * 2;
    		  size[i] = (i+5)*2;
    	  }
     
    	  fontBox.addItemListener(new ItemListener(){

    		  public void itemStateChanged(ItemEvent event){
    			  if( event.getStateChange() == ItemEvent.SELECTED){
    				  displayText.setFont( new Font( fontNames[fontBox.getSelectedIndex()],
    						  displayText.getFont().getStyle(), displayText.getFont().getSize() ) );

       
    			  }
    		  }
    	  });
     
      
    	  fontBackColor.addItemListener(new ItemListener(){

    	        public void itemStateChanged(ItemEvent event){
    	       
    	        	 displayText.setBackground(backcolor[fontBackColor.getSelectedIndex()]);
    	     
    	        }
    	       }
    	      );
    	     
      
    	  fontColor.addItemListener( new ItemListener(){

   	        public void itemStateChanged(ItemEvent event){
   	        
   	        	displayText.setForeground(colorvalues[fontColor.getSelectedIndex()]);
   	    
   	        }
   	       }
   	      );
   	     
    	  String style_name[] = {"常规","倾斜","粗体","倾斜加粗体"};//字体风格
    	  styleBox = new JComboBox(style_name);
    	  styleBox.addItemListener( new ItemListener(){

    		  public void itemStateChanged(ItemEvent event){
    			  if( event.getStateChange() == ItemEvent.SELECTED){
    				  if(styleBox.getSelectedIndex()==0) style = Font.PLAIN;
    				  if(styleBox.getSelectedIndex()==1) style = Font.ITALIC;
    				  if(styleBox.getSelectedIndex()==2) style = Font.BOLD;
    				  if(styleBox.getSelectedIndex()==3) style = Font.ITALIC+Font.BOLD;
    				  displayText.setFont( new Font( displayText.getFont().getName(), 
    						  style, displayText.getFont().getSize() ) );
    			  }
    		  }
    	  });
      
    
    	  sizeBox = new JComboBox(sizeString);
    	  sizeBox.addItemListener(new ItemListener(){

    		  public void itemStateChanged(ItemEvent event){
    			  if( event.getStateChange() == ItemEvent.SELECTED){
    				  displayText.setFont( new Font( displayText.getFont().getName(),
    						  displayText.getFont().getStyle(), size[sizeBox.getSelectedIndex()] ) );

       
    			  }
    		  }
    	  } );
      
    	  // 插入图片
    	  b_icon.addActionListener(new ActionListener() { // 插入图片事件
    	     public void actionPerformed(ActionEvent arg0) {
    	      JFileChooser f = new JFileChooser(); // 查找文件
    	      
    	      f.showOpenDialog(null);

    	      filepath=f.getSelectedFile().getPath();

    	      insertIcon(f.getSelectedFile()); // 插入图片
    	     }
    	    });
      
      
    	  b_link.addActionListener(new ActionListener() { 
    		  public void actionPerformed(ActionEvent arg0) {
 	    	 
 	    	   
    			  JPanel swapPanel = new JPanel();
    			  JLabel lookupLabel = new JLabel("请输入网址：");
    			  JTextField inputText = new JTextField(20);
 	        
    			  swapPanel.add( lookupLabel );
    			  swapPanel.add( inputText );
    			  JOptionPane.showMessageDialog(null,swapPanel);
    			  String t = inputText.getText();//获得整个文本内容
 	         
    			  try{
 	    	    
 	    	    
    				  URL address=new URL(t);
 	    	    	  
 	    	    	  text.setPage(address);
 	    	    	  
 	    	      	}catch(MalformedURLException e){
 	    	    	  
 	    	      		System.out.println("Malformed URL:"+e);
 	    	    	  
 	    	      }catch(IOException e){
 	    	    	  
 	    	    	  System.out.println("IOException:"+e);
 	    	      }
 	    	     text.addHyperlinkListener(new  HyperlinkListener(){
 	    	    	  
 	    	    	
 	    	    	    public void hyperlinkUpdate(HyperlinkEvent e){ 
 	    	    	        if(e.getEventType()==HyperlinkEvent.EventType.ACTIVATED){ 
 	    	    	            try{ 
 	    	    	                text.setPage(e.getURL()); 
 	    	    	            } catch(Exception ex){ 
 	    	    	                ex.printStackTrace(); 
 	    	    	            } 
 	    	    	        } 
 	    	    	    } 
 	    	     
 	    	    	  
 	    	    	
 	    	      });
 	     }
 	    });
  
      
      
   
      // set up File menu and its menu items
      JMenu fileMenu = new JMenu( "文件(F)" );
      fileMenu.setMnemonic( 'F' );

      // set up About... menu item
      JMenuItem aboutItem = new JMenuItem( "关于(A)..." );
      aboutItem.setMnemonic( 'A' );
      fileMenu.add( aboutItem );
      aboutItem.addActionListener(

         new ActionListener() {  // anonymous inner class

            // display message dialog when user selects About...
            public void actionPerformed( ActionEvent event )
            {
               JOptionPane.showMessageDialog( Notepad.this,
                  "多功能编辑器——盛文巍，张航，高焕国/n",
                  "关于", JOptionPane.PLAIN_MESSAGE );
               
            }

         }  // end anonymous inner class

      ); // end call to addActionListener
 
      // set up Exit menu item退出菜单
      JMenuItem exitItem = new JMenuItem( "Exit" );
      exitItem.setMnemonic( 'x' );
      fileMenu.add( exitItem );
      exitItem.addActionListener(

         new ActionListener() {  // anonymous inner class

            // terminate application when user clicks exitItem
            public void actionPerformed( ActionEvent event )
            {
               System.exit( 0 );
            }

         }  // end anonymous inner class

      ); // end call to addActionListener

      // create menu bar and attach it to MenuTest windowg
      JMenuBar bar = new JMenuBar();  
      setJMenuBar( bar );  
      bar.add( fileMenu );  
      
      JMenu editMenu = new JMenu( "编辑(E)" );
      editMenu.setMnemonic( 'E' );
      
      //复制菜单选项
      JMenuItem copyItem = new JMenuItem( "复制(C)" );