package?xzt.newpark;

import?java.awt.Component;
import?java.awt.Container;
import?java.awt.GridBagConstraints;
import?java.awt.GridBagLayout;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.io.IOException;
import?java.io.objectInputStream;
import?java.io.objectOutputStream;
import?java.net.ServerSocket;
import?java.net.Socket;
import?java.net.UnknownHostException;
import?java.util.ArrayList;
import?java.util.Iterator;

import?javax.swing.JButton;
import?javax.swing.Jframe;
import?javax.swing.JLabel;
import?javax.swing.JOptionPane;

public?class?Entrance?extends?Jframe?implements?PortI?Runnable?{

	/**
	?*?
	?*/
	private?static?final?long?serialVersionUID?=?290382490375072605L;

	private?ArrayList?remotePortInfs;//?該列表保存所有的Port對象（包括出口和入口）的信息

	//?其中的元素是PortInfBean對象

	private?ArrayList?applicationStack;//?保存所有待進(jìn)入臨界區(qū)的Message

	private?ArrayList?entranceJoinReplyStack;//?保存所有端口發(fā)送的包含了自己狀態(tài)的消息

	private?ServerSocket?serverSocket;//?socket對象?負(fù)責(zé)發(fā)送和接受消息

	private?PortInfBean?localPortInf;//?代表自己這個節(jié)點(diǎn)的信息

	private?int?unoccupiedNum;//?當(dāng)前空閑車位數(shù)

	@SuppressWarnings（“unused“）
	private?int?totalParkingNum;//?總車位數(shù)

	private?int?replyNum;//?收到的回復(fù)數(shù)

	private?JLabel?nameLabel?unoccupiedNumLabel;

	private?JButton?carInButton;

	private?ActionListener?listener?=?new?MyBtnListener（）;

	private?int?waitingCarNum;

	//?入口狀態(tài)，有RELEASED、WANTED、HELD三種狀態(tài)
	private?STATE?state;
	enum?STATE?{
		RELEASEDWANTEDHELD;
	}

	//?是否系統(tǒng)正在加入端口，如果是，則需要等到端口加入后占有臨界區(qū)的入口才能釋放臨界區(qū)
	private?boolean?updating;

	private?class?MyBtnListener?implements?ActionListener?{
		public?void?actionPerformed（ActionEvent?e）?{
			object?o?=?e.getSource（）;
			if?（o?instanceof?JButton）?{
				JButton?btn?=?（JButton）?o;
				if?（btn.getText（）.equals（“Car?Enter“））?{
					new?Thread（）?{
						public?void?run（）?{
							if?（state?==?STATE.RELEASED）?{
								state?=?STATE.WANTED;
								apply（）;
							}?else?{
								waitingCarNum++;
							}
							showUnoccupiedNum（）;
						}
					}.start（）;
				}
			}
		}
	}

	public?Entrance（String?address?int?port?int?totalParkingNum）?{
		super（String.valueOf（“ENTRANCE:“?+?port））;
		try?{
			localPortInf?=?new?PortInfBean（address?port?“entrance“）;
			serverSocket?=?new?ServerSocket（port）;
			remotePortInfs?=?new?ArrayList（）;
			applicationStack?=?new?ArrayList（）;
			entranceJoinReplyStack?=?new?ArrayList（）;
			replyNum?=?0;
			unoccupiedNum?=?totalParkingNum;
			this.totalParkingNum?=?totalParkingNum;
			state?=?STATE.RELEASED;
			waitingCarNum?=?0;
			updating?=?false;
			nameLabel?=?new?JLabel（“Unoccupied?Num:“）;
			unoccupiedNumLabel?=?new?JLabel（Integer
					.toOctalString（this.unoccupiedNum））;
			carInButton?=?new?JButton（“Car?Enter“）;
			Container?contentPane?=?this.getContentPane（）;
			GridBagConstraints?gbc?=?new?GridBagConstraints（）;
			contentPane.setLayout

?屬性????????????大小?????日期????時間???名稱
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?????文件??????19607??2013-12-31?16:21??newpark\Entrance.java

?????文件??????11063??2013-12-31?16:20??newpark\Exit.java

?????文件???????5424??2013-12-31?16:22??newpark\Initframe.java

?????文件???????2137??2013-12-31?16:20??newpark\Message.java

?????文件???????4131??2013-12-31?17:11??newpark\ParkManager.java

?????文件????????694??2013-12-31?16:20??newpark\PortI.java

?????文件???????1356??2013-12-31?16:20??newpark\PortInfBean.java

?????目錄??????????0??2013-12-31?17:35??newpark

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

????????????????44412????????????????????8