replace.java

java写字板 功能于windows自带的写字板相似

/*
 * Replace.java
 *
 * Created on 2007年12月10日, 下午6:11
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package WordTest;

import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 import javax.swing.event.*; 
 import javax.swing.text.*;
import WordTest.*;

/**
 *
 * @author Administrator
 */
public class Replace extends JDialog implements ActionListener{
       private JTextField RepText=new JTextField(20);
       private JTextField RepTo=new JTextField(20);
       private JLabel ShowText=new JLabel("替换内容：");
       private JLabel ShowText2=new JLabel("替换为：");
    private  JPanel p1 = new JPanel();
    private  JPanel p2 = new JPanel();
    private JPanel p3=new JPanel();
    private JButton ReplaceNext=new JButton("替换下一个");
    private JButton ReplaceEnter=new JButton("确定");
  //  private JButton ReplaceCancel=new JButton("取消");
     String str,strnext;
  	int startp,endp,nexttemp,newstartp,newendp;
    /** Creates a new instance of Replace */
    public Replace(JFrame fra,String str) {
         super(fra,str);

	        this.setLocation(300,200);
	       
               
          p1.add(ShowText);
        p1.add(RepText);
    
        p2.add(ShowText2);
        p2.add(RepTo);
         p3.setLayout(new FlowLayout());
         p3.add(ReplaceNext);
         p3.add(ReplaceEnter);
        // p3.add(ReplaceCancel);
         add("North",p1);
         add("Center",p2);
         add("South",p3);
        
         setSize(400,200);
         this.show();
         ReplaceNext.addActionListener(this);
         ReplaceEnter.addActionListener(this);
       //  ReplaceCancel.addActionListener(this);
    }
    
   // <editor-fold defaultstate="collapsed" desc=" 替换事件区 ">      
  private void ReplaceEnterEvent() 
  {  str = MainFrame.TextArea.getText();
        startp = str.indexOf(RepText.getText());
        endp = startp + RepText.getText().length();
        MainFrame.TextArea.replaceRange(RepTo.getText(),startp,endp);
        newendp = endp; ///获取这次替换的终点
        
    }
  void ReplaceNextEvent()
  {nexttemp = newendp; /////获取上次查找的终点做为未查找字符串的起点
        String strall = MainFrame.TextArea.getText();
        MainFrame.TextArea.select(nexttemp,strall.length()); /////选中所有未查找的字符串
        strnext = MainFrame.TextArea.getSelectedText();
        newstartp = strnext.indexOf(RepText.getText()) + nexttemp;/////在未查找的字符串里搜索对应字符的在TXT1中的位置
        newendp = newstartp + RepText.getText().length();
        MainFrame.TextArea.select(newstartp,newendp); 
       NoFind();
        MainFrame.TextArea.replaceRange(RepTo.getText(),newstartp,newendp);//替换字符
  }
  void NoFind()
{
     if(!MainFrame.TextArea.getSelectedText().equals(RepText.getText())) 
        { 
           MainFrame.TextArea.setCaretPosition(0); //光标返回文件头部
           JOptionPane.showMessageDialog(null,"查找不到对应的字符！","查找结果",JOptionPane.ERROR_MESSAGE);
           
        }
}
   // </editor-fold>
    public void actionPerformed(ActionEvent e) {
         if(e.getSource()== ReplaceNext)
        {
             ReplaceNextEvent();
        }
        else if(e.getSource()== ReplaceEnter)
        {
             ReplaceEnterEvent();
        }
       // else if(e.getSource()== ReplaceCancel)
       // {  this.hide();
         //   this.dispose();
       // }
    }

  
}