package lesson4;

import java.awt.event.ActionEvent;
import javax.swing.filechooser.FileNameExtensionFilter;

public class Action implements java.awt.event.ActionListener{

	public void actionPerformed(ActionEvent e) {
		String commen = e.getActionCommand();
		if(commen.equals("压缩")){
					System.out.println("压缩了~");
					//文件选择
					javax.swing.JFileChooser Chooser = new javax.swing.JFileChooser(); 
					int t=Chooser.showOpenDialog(null);//弹出文件选择框
					
					
					if(t==Chooser.APPROVE_OPTION){//如果点击的是确定
						//得到文件的绝对路径
						String path=Chooser.getSelectedFile().getAbsolutePath();
						HuffmanCode code = new HuffmanCode(path);
						code.readFile();//读取文件
						code.writeFile();//写出压缩文件
					}
	    }if("解压缩".equals(commen)){
			System.out.println("解压缩了~~");
			//显示打开的窗口
			javax.swing.JFileChooser chooser = new javax.swing.JFileChooser();
			    FileNameExtensionFilter filter = new FileNameExtensionFilter(
			        "stzip压缩文件", "stzip");
			    chooser.setFileFilter(filter);
			    int returnVal = chooser.showOpenDialog(null);
			    if(returnVal == chooser.APPROVE_OPTION) {
			          String path = chooser.getSelectedFile().getAbsolutePath();//得到压缩文件的路径
			          HuffmanDecode decode = new HuffmanDecode(path);
			          decode.Decode();//解压缩文件
			    }
					
		}if("退出".equals(commen)){
			System.exit(0);
		}if("关于".equals(commen)){
			javax.swing.JOptionPane.showConfirmDialog(null, "By Stchou 2010@NetJava","关于",javax.swing.JOptionPane.YES_OPTION, javax.swing.JOptionPane.QUESTION_MESSAGE);
		}
		
	}
	
}