package com.lishan.iframe;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;
import javax.swing.text.Document;

import com.lishan.Library;
import com.lishan.dao.Dao;
import com.lishan.model.Operater;
import com.lishan.util.CreatedIcon;
import com.lishan.util.MyDocument;

public class BookLoginIFrame extends JFrame {
	private JPasswordField password; // 登陸密碼
	private JTextField username; // 登陸用戶
	private JButton login; // 登陸按鈕
	private JButton reset; // 重新輸入按鈕
	private static Operater user; // 用戶

	private class BookResetAction implements ActionListener {// 對重置事件監聽
		public void actionPerformed(final ActionEvent e) {
			username.setText("");
			password.setText("");
		}
	}

	class BookLoginAction implements ActionListener {// 對登陸事件監聽
		public void actionPerformed(final ActionEvent e) {
			//核對用戶是不是管理員(只要管理員表中有該條記錄,則代表此用戶是管理員)
			user = Dao.check(username.getText(), password.getText());
			if (user.getName() != null) {//如果是
				try {
					//則顯示主窗體,隱藏登陸窗體.
					Library frame = new Library();
					frame.setVisible(true);
					BookLoginIFrame.this.setVisible(false);
				} catch (Exception ex) {
					ex.printStackTrace();
				}
			} else {
				JOptionPane.showMessageDialog(null, "只有管理員才可以登錄");
				username.setText("");
				password.setText("");
			}
		}
	}

	/**
	 * 啟動登陸界面
	 */
	public BookLoginIFrame() {// 構造登陸界面
		super();
		final BorderLayout borderLayout = new BorderLayout();
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		borderLayout.setVgap(10); // 設置組件間的垂直間距
		setTitle("圖書管理系統登陸");
		setBounds(100, 100, 285, 194);

		final JPanel panel = new JPanel();
		panel.setLayout(new BorderLayout());
		panel.setBorder(new EmptyBorder(0, 0, 0, 0)); // 設置邊框
		getContentPane().add(panel);

		final JPanel panel_2 = new JPanel();
		final GridLayout gridLayout = new GridLayout(0, 2);
		gridLayout.setHgap(5);
		gridLayout.setVgap(5);
		panel_2.setLayout(gridLayout);
		panel.add(panel_2);

		final JLabel label = new JLabel();
		label.setHorizontalAlignment(SwingConstants.CENTER);// 設置標簽內容沿 X 軸的對齊方式
		label.setPreferredSize(new Dimension(0, 0));
		label.setMinimumSize(new Dimension(0, 0));
		panel_2.add(label);
		label.setText("用 戶 名");

		username = new JTextField(20);
		username.setPreferredSize(new Dimension(0, 0));
		panel_2.add(username);

		final JLabel label_1 = new JLabel();
		label_1.setHorizontalAlignment(SwingConstants.CENTER);
		panel_2.add(label_1);
		label_1.setText("密   碼");

		password = new JPasswordField(20);
		// 將編輯器與一個MyDocument文本文檔關聯。當前注冊的工廠用來生成文檔的一個視圖，此視圖經過重新驗證之后由編輯器來顯示。
		// 將 PropertyChange 事件 ("document") 傳播到每個偵聽器。
		password.setDocument(new MyDocument(6));
		password.setEchoChar('*');
		password.addKeyListener(new KeyAdapter() {
			public void keyPressed(final KeyEvent e) {
				if (e.getKeyCode() == 10)
					login.doClick();
			}
		});
		panel_2.add(password);

		final JPanel panel_1 = new JPanel();
		panel.add(panel_1, BorderLayout.SOUTH);

		login = new JButton("登陸");
		login.addActionListener(new BookLoginAction());
		panel_1.add(login);
		reset = new JButton("重置");
		reset.addActionListener(new BookResetAction());
		panel_1.add(reset);

		final JLabel tupianLabel = new JLabel();
		ImageIcon loginIcon = CreatedIcon.add("login.jpg");
		tupianLabel.setIcon(loginIcon);
		tupianLabel.setOpaque(true); // 使組件繪制其邊界內的所有像素
		tupianLabel.setBackground(Color.GREEN);
		tupianLabel.setPreferredSize(new Dimension(260, 60));
		panel.add(tupianLabel, BorderLayout.NORTH);

		setVisible(true);
		setResizable(false);
		// this.pack();
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

	public static Operater getUser() {
		return user;
	}

	public static void setUser(Operater user) {
		BookLoginIFrame.user = user;
	}
	// public static void main(String[] args){
	// new BookLoginIFrame();
	// }
}