/*
?*?@（#）BtnActionListener.java??2008-12-28
?*?
?*?Copyright?STF?
?*/
package?edu.cqit.haffman;

import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.io.BufferedReader;
import?java.io.BufferedWriter;
import?java.io.File;
import?java.io.FileReader;
import?java.io.FileWriter;

import?javax.swing.JFileChooser;
import?javax.swing.filechooser.FileNameExtensionFilter;

/**
?*?按鈕監聽器
?*?
?*?@author?StarFineJade
?*?
?*/
class?BtnActionListener?implements?ActionListener?{

	JFileChooser?fileChooser?=?new?JFileChooser（“.“）;
	
	
	public?BtnActionListener（）?{
		fileChooser.setMultiSelectionEnabled（false）;
		fileChooser.addChoosableFileFilter（new?FileNameExtensionFilter（
								“DATA?file（*.txt?*.dat）“?“txt“?“dat“））;
	}
	
	String?read（File?e）?throws?Exception?{
		BufferedReader?br?=?new?BufferedReader（new?FileReader（e））;
		StringBuffer?buf?=?new?StringBuffer（）;
		while?（br.ready（））?{
			String?s?=?br.readLine（）;
			buf.append（s）;
		}
		br.close（）;
		return?buf.toString（）;
	}
	
	void?write（String?outStr?File?out）?throws?Exception?{
		BufferedWriter?bw?=?new?BufferedWriter（new?FileWriter（out））;
		bw.write（outStr）;
		bw.close（）;
	}
	
	/*
	?*?（non-Javadoc）
	?*?
	?*?@see
	?*?java.awt.event.ActionListener#actionPerformed（java.awt.event.ActionEvent）
	?*/
	@Override
	public?void?actionPerformed（ActionEvent?e）?{
		if?（e.getActionCommand（）.equals（“encode“））?{			//?編碼
			String?inStr?=?EnDecoder.ui.textTa.getText（）;
			if?（““.equals（inStr））?{
				try?{
				int?returnValue?=?fileChooser.showOpenDialog（EnDecoder.frame）;
				if?（returnValue?==?JFileChooser.CANCEL_OPTION）?{
					File?in?=?fileChooser.getSelectedFile（）;
					inStr?=?read（in）;
					EnDecoder.ui.textTa.setText（inStr）;
				}?else?{
					return;
				}
				}?catch?（Exception?e1）?{
					//?TODO?Auto-generated?catch?block
					e1.printStackTrace（）;
				}
			}
			String?outStr?=?EnDecoder.haffman.encode（inStr）;
			EnDecoder.ui.codeTa.setText（outStr）;
			File?out?=?new?File（“codeFile.dat“）;
			try?{
				write（outStr?out）;
			}?catch?（Exception?e1）?{
				//?TODO?Auto-generated?catch?block
				e1.printStackTrace（）;
			}
			
		}?else?if?（e.getActionCommand（）.equals（“decode“））?{		//?解碼
			String?inStr?=?EnDecoder.ui.codeTa.getText（）;
			if?（““.equals（inStr））?{
				try?{
				int?returnValue?=?fileChooser.showOpenDialog（EnDecoder.frame）;
				if?（returnValue?==?JFileChooser.APPROVE_OPTION）?{
					File?in?=?fileChooser.getSelectedFile（）;
					inStr?=?read（in）;
					EnDecoder.ui.codeTa.setText（inStr）;
				}?else?{
					return;
				}
				}?catch?（Exception?e1）?{
					//?TODO?Auto-generated?catch?block
					e1.printStackTrace（）;
				}
				
			}
			String?outStr?=?EnDecoder.haffman.decode（inStr）;
			File?out?=?new?File（“textFile.dat“）;
			EnDecoder.ui.textTa.setText（outStr）;
			try?{
				write（outStr?out）;
			}?catch?（Exception?e1）?{
				//?TODO?Auto-generated?catch?block
				e1.p

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????211??2009-01-08?12:19??哈夫曼?編譯碼器\codeFile.dat

?????文件????????145??2009-01-08?12:17??哈夫曼?編譯碼器\frequency.dat

?????文件??????16563??2009-01-08?13:22??哈夫曼?編譯碼器\haffman.jar

?????文件????????356??2009-01-08?13:29??哈夫曼?編譯碼器\hfmtree.dat

?????文件???????4096??2009-01-08?13:19??哈夫曼?編譯碼器\src\edu\cqit\huffman\BtnActionListener.java

?????文件????????910??2009-01-01?12:27??哈夫曼?編譯碼器\src\edu\cqit\huffman\Code.java

?????文件???????2187??2009-01-01?13:47??哈夫曼?編譯碼器\src\edu\cqit\huffman\EnDecoder.java

?????文件????????939??2009-01-01?12:22??哈夫曼?編譯碼器\src\edu\cqit\huffman\Frequency.java

?????文件???????6069??2009-01-08?12:10??哈夫曼?編譯碼器\src\edu\cqit\huffman\Haffman.java

?????文件???????3896??2009-01-01?12:49??哈夫曼?編譯碼器\src\edu\cqit\huffman\UI.java

?????文件???????2823??2008-12-31?11:15??哈夫曼?編譯碼器\src\edu\cqit\ParkSimulation\linkedQueue.java

?????文件???????2007??2008-12-28?00:20??哈夫曼?編譯碼器\src\edu\cqit\ParkSimulation\Node.java

?????文件???????1802??2008-12-21?20:43??哈夫曼?編譯碼器\src\edu\cqit\ParkSimulation\Queue.java

?????文件?????????41??2009-01-08?12:18??哈夫曼?編譯碼器\textFile.dat

?????文件???????1206??2009-01-08?12:19??哈夫曼?編譯碼器\treeprint.dat

?????目錄??????????0??2009-01-08?13:35??哈夫曼?編譯碼器\src\edu\cqit\huffman

?????目錄??????????0??2009-01-08?13:35??哈夫曼?編譯碼器\src\edu\cqit\ParkSimulation

?????目錄??????????0??2009-01-08?13:35??哈夫曼?編譯碼器\src\edu\cqit

?????目錄??????????0??2009-01-08?13:35??哈夫曼?編譯碼器\src\edu

?????目錄??????????0??2009-01-08?13:35??哈夫曼?編譯碼器\src

?????目錄??????????0??2009-01-08?13:35??哈夫曼?編譯碼器

-----------?---------??----------?-----??----

????????????????43251????????????????????21