www.pudn.com > MyFileGUITest.rar > MyFileGUITest.java

package com.last; 
 
import java.awt.*; 
import java.awt.event.*; 
import java.io.*; 
 
public class MyFileGUITest extends Frame implements ActionListener{ 
 
	/** 
	 * @param args 
	 */ 
	TextArea ta = new TextArea(); 
	MenuBar mb; 
	Menu menu,edit; 
	MenuItem open,save,find; 
	MyFile mf = new MyFile(this); 
	MyFindDialog mfd = new MyFindDialog(this,ta); 
	 
	public MyFileGUITest(){ 
		this.mb = new MenuBar(); 
		this.menu = new Menu("file"); 
		this.edit = new Menu("edit"); 
		this.open = new MenuItem("open"); 
		this.open.addActionListener(this); 
		this.menu.add(open); 
		 
		this.save = new MenuItem("save"); 
		this.save.addActionListener(this); 
		this.menu.add(save); 
		 
		this.find = new MenuItem("find"); 
		this.find.addActionListener(this); 
		this.edit.add(find); 
		this.mb.add(this.menu); 
		this.mb.add(this.edit); 
		this.setMenuBar(mb); 
		//this.ta = new TextArea(); 
		this.add(this.ta); 
		this.addWindowListener(new WindowAdapter(){ 
			public void windowClosing(WindowEvent e){ 
				System.exit(0); 
			} 
		}); 
		this.setBounds(300,300,500,400); 
		this.setVisible(true); 
		 
	} 
	public static void main(String[] args) { 
		new MyFileGUITest(); 
 
	} 
	public void actionPerformed(ActionEvent e) { 
		if(e.getSource() == open){ 
			this.ta.setText(this.mf.getData()); 
		} 
		else if(e.getSource() == save){ 
			this.mf.setData(this.ta.getText()); 
		} 
		else{ 
			this.mfd.showDialog(); 
			 
		} 
		 
	} 
 
} 
 
class MyFile{ 
	FileDialog fd; 
	 
	public MyFile(Frame parent){ 
		this.fd = new FileDialog(parent,"open",FileDialog.LOAD); 
	} 
	 
	public String getPath(){ 
		return this.fd.getDirectory() +"\\"+ this.fd.getFile(); 
	} 
	 
	public String getData(){ 
		this.fd.setMode(FileDialog.LOAD); 
		//this.fd.setBounds(400,400,300,300); 
		this.fd.setVisible(true); 
		try { 
			BufferedReader br = new BufferedReader(new FileReader(this.getPath())); 
			String line = br.readLine(); 
			StringBuffer st = new StringBuffer();  
			while(line != null){ 
				st.append(line +"\n"); 
				line = br.readLine(); 
			} 
			br.close(); 
			return st.toString(); 
			 
		} catch (Exception e) { 
			// TODO Auto-generated catch block 
			e.printStackTrace(); 
			return null; 
		} 
	} 
	 
	public void setData(String data){ 
		this.fd.setMode(FileDialog.SAVE); 
		this.fd.setVisible(true); 
		 
		try { 
			PrintWriter pw = new PrintWriter(new FileWriter(this.getPath())); 
			pw.write(data); 
			pw.close(); 
		} catch (IOException e) { 
			// TODO Auto-generated catch block 
			e.printStackTrace(); 
		} 
	} 
} 
 
class MyFindDialog extends Dialog implements ActionListener{ 
	 
	Label lFind; 
	TextField find; 
	Button bFind; 
	TextArea ta; 
	 
	public MyFindDialog(Frame owner, TextArea ta){ 
		super(owner,"find",false); 
		this.ta = ta; 
		this.setLayout(new FlowLayout()); 
		this.lFind = new Label("²éÕÒÄÚÈÝ: "); 
		this.find = new TextField(20); 
		this.bFind = new Button("²éÕÒ"); 
		this.bFind.addActionListener(this); 
		this.add(this.lFind); 
		this.add(this.find); 
		this.add(this.bFind); 
		 
		 
		this.addWindowListener(new WindowAdapter(){ 
			public void windowClosing(WindowEvent e){ 
				MyFindDialog.this.setVisible(false); 
			} 
		}); 
		 
		 
	} 
	 
	public void showDialog(){ 
		this.setBounds(400,400,400,150); 
		this.setVisible(true); 
	} 
	 
	public void find(){ 
		String text = this.ta.getText(); 
		String str = this.find.getText(); 
		 
		int end = text.length(); 
		int len = str.length(); 
		 
		int start = this.ta.getSelectionEnd(); 
		if(start == end){ 
			start = 0; 
		} 
		for( ; start<=end-len; start++){ 
			if(text.substring(start,start+len).equals(str)){ 
				this.ta.setSelectionStart(start); 
				this.ta.setSelectionEnd(start+len); 
				return; 
			} 
		} 
		this.ta.setSelectionStart(end); 
		this.ta.setSelectionEnd(end); 
		 
	} 
	 
	 
 
	public void actionPerformed(ActionEvent e) { 
		this.find(); 
		 
	} 
	 
}