import java.awt.BorderLayout;  
import java.awt.Color;  
import java.awt.Cursor;  
import java.awt.Dimension;  
import java.awt.FlowLayout;  
import java.awt.Font;  
import java.awt.Frame;  
import java.awt.GridLayout;  
import java.awt.Point;  
import java.awt.Toolkit;  
import java.awt.event.ActionEvent;  
import java.awt.event.ActionListener;  
import java.text.ParseException;  
import java.text.SimpleDateFormat;  
import java.util.Calendar;  
import java.util.Date;  
  
import javax.swing.JButton;  
import javax.swing.JDialog;  
import javax.swing.JFrame;  
import javax.swing.JLabel;  
import javax.swing.JPanel;  
import javax.swing.JSpinner;  
import javax.swing.SpinnerNumberModel;  
import javax.swing.SwingConstants;  
import javax.swing.SwingUtilities;  
import javax.swing.border.LineBorder;  
import javax.swing.event.ChangeEvent;  
import javax.swing.event.ChangeListener;  
  
/** 
 * 
 * YouAreStupid 收集網上靠譜的例子，修改後的Swing日期 
 * 時間選擇器,因為修改時間匆忙，希望有時間的朋友繼續改進。 
 * 例子原作者:zjw 
 * 修改/完善：YouAreStupid 
 */  
public class DateChooserJButton extends JButton {  
  
    private DateChooser dateChooser = null;  
    private String preLabel = "";  
    private String originalText = null;  
    private SimpleDateFormat sdf = null;  
  
    public DateChooserJButton() {  
        this(getNowDate());  
    }  
  
    public DateChooserJButton(String dateString) {  
        this();  
        setText(getDefaultDateFormat(), dateString);  
        //儲存原始是日期時間  
        initOriginalText(dateString);  
    }  
  
    public DateChooserJButton(SimpleDateFormat df, String dateString) {  
        this();  
        setText(df, dateString);  
  
        //記憶當前的日期格式化器  
        this.sdf = df;  
  
        //記憶原始日期時間  
        Date originalDate = null;  
        try {  
            originalDate = df.parse(dateString);  
        } catch (ParseException ex) {  
            originalDate = getNowDate();  
        }  
        initOriginalText(originalDate);  
    }  
  
    public DateChooserJButton(Date date) {  
        this("", date);  
        //記憶原始日期時間  
        initOriginalText(date);  
    }  
  
    public DateChooserJButton(String preLabel, Date date) {  
        if (preLabel != null) {  
            this.preLabel = preLabel;  
        }  
        setDate(date);  
        //記憶原始是日期時間  
        initOriginalText(date);  
  
        setBorder(null);  
        setCursor(new Cursor(Cursor.HAND_CURSOR));  
        super.addActionListener(new ActionListener() {  
  
            @Override  
            public void actionPerformed(ActionEvent e) {  
                if (dateChooser == null) {  
                    dateChooser = new DateChooser();  
                }  
                Point p = getLocationOnScreen();  
                p.y = p.y + 30;  
                dateChooser.showDateChooser(p);  
            }  
        });  
    }  
  
    private static Date getNowDate() {  
        return Calendar.getInstance().getTime();  
    }  
  
    private static SimpleDateFormat getDefaultDateFormat() {  
        return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
    }  
  
    /** 
     * 得到當前使用的日期格式化器 
     * @return 日期格式化器 
     */  
    public SimpleDateFormat getCurrentSimpleDateFormat(){  
        if(this.sdf != null){  
            return sdf;  
        }else{  
            return getDefaultDateFormat();  
        }  
    }  
  
  
    //儲存原始是日期時間  
    private void initOriginalText(String dateString) {  
        this.originalText = dateString;  
    }  
  
    //儲存原始是日期時間  
    private void initOriginalText(Date date) {  
        this.originalText = preLabel + getDefaultDateFormat().format(date);  
    }  
  
    /**  
     * 得到當前記憶的原始日期時間 
     * @return 當前記憶的原始日期時間（未修改前的日期時間） 
     */  
    public String getOriginalText() {  
        return originalText;  
    }  
  
    // 覆蓋父類的方法  
    @Override  
    public void setText(String s) {  
        Date date;  
        try {  
            date = getDefaultDateFormat().parse(s);  
        } catch (ParseException e) {  
            date = getNowDate();  
        }  
        setDate(date);  
    }  
  
    public void setText(SimpleDateFormat df, String s) {  
        Date date;  
        try {  
            date = df.parse(s);  
        } catch (ParseException e) {  
            date = getNowDate();  
        }  
        setDate(date);  
    }  
  
    public void setDate(Date date) {  
        super.setText(preLabel + getDefaultDateFormat().format(date));  
    }  
  
    public Date getDate() {  
        String dateString = getText().substring(preLabel.length());  
        try {  
            SimpleDateFormat currentSdf = getCurrentSimpleDateFormat();  
            return currentSdf.parse(dateString);  
        } catch (ParseException e) {  
            return getNowDate();  
        }  
    }  
  
    /**   
     * 覆蓋父類的方法使之無效 
     * @param listener 響應監聽器 
     */  
    @Override  
    public void addActionListener(ActionListener listener) {  
    }  
  
    /** 
     * 內部類，主要是定義一個JPanel，然後把日曆相關的所有內容填入本JPanel， 
     * 然後再建立一個JDialog，把本內部類定義的JPanel放入JDialog的內容區 
     */  
    private class DateChooser extends JPanel implements ActionListener, ChangeListener {  
  
        int startYear = 1980; // 預設【最小】顯示年份  
        int lastYear = 2050; // 預設【最大】顯示年份  
        int width = 390; // 介面寬度  
        int height = 210; // 介面高度  
        Color backGroundColor = Color.gray; // 底色  
        // 月曆表格配色----------------//  
        Color palletTableColor = Color.white; // 日曆表底色  
        Color todayBackColor = Color.orange; // 今天背景色  
        Color weekFontColor = Color.blue; // 星期文字色  
        Color dateFontColor = Color.black; // 日期文字色  
        Color weekendFontColor = Color.red; // 週末文字色  
        // 控制條配色------------------//  
        Color controlLineColor = Color.pink; // 控制條底色  
        Color controlTextColor = Color.white; // 控制條標籤文字色  
        Color rbFontColor = Color.white; // RoundBox文字色  
        Color rbBorderColor = Color.red; // RoundBox邊框色  
        Color rbButtonColor = Color.pink; // RoundBox按鈕色  
        Color rbBtFontColor = Color.red; // RoundBox按鈕文字色  
        /** 點選DateChooserButton時彈出的對話方塊，日曆內容在這個對話方塊內 */  
        JDialog dialog;  
        JSpinner yearSpin;  
        JSpinner monthSpin;  
        JSpinner daySpin;  
        JSpinner hourSpin;  
        JSpinner minuteSpin;  
        JSpinner secondSpin;  
        JButton[][] daysButton = new JButton[6][7];  
  
        DateChooser() {  
  
            setLayout(new BorderLayout());  
            setBorder(new LineBorder(backGroundColor, 2));  
            setBackground(backGroundColor);  
  
            JPanel topYearAndMonth = createYearAndMonthPanal();  
            add(topYearAndMonth, BorderLayout.NORTH);  
            JPanel centerWeekAndDay = createWeekAndDayPanal();  
            add(centerWeekAndDay, BorderLayout.CENTER);  
            JPanel buttonBarPanel = createButtonBarPanel();  
            this.add(buttonBarPanel, java.awt.BorderLayout.SOUTH);  
        }  
  
        private JPanel createYearAndMonthPanal() {  
            Calendar c = getCalendar();  
            int currentYear = c.get(Calendar.YEAR);  
            int currentMonth = c.get(Calendar.MONTH) + 1;  
            int currentHour = c.get(Calendar.HOUR_OF_DAY);  
            int currentMinute = c.get(Calendar.MINUTE);  
            int currentSecond = c.get(Calendar.SECOND);  
  
            JPanel result = new JPanel();  
            result.setLayout(new FlowLayout());  
            result.setBackground(controlLineColor);  
  
            yearSpin = new JSpinner(new SpinnerNumberModel(currentYear, startYear, lastYear, 1));  
            yearSpin.setPreferredSize(new Dimension(48, 20));  
            yearSpin.setName("Year");  
            yearSpin.setEditor(new JSpinner.NumberEditor(yearSpin, "####"));  
            yearSpin.addChangeListener(this);  
            result.add(yearSpin);  
  
            JLabel yearLabel = new JLabel("年");  
            yearLabel.setForeground(controlTextColor);  
            result.add(yearLabel);  
  
            monthSpin = new JSpinner(new SpinnerNumberModel(currentMonth, 1, 12, 1));  
            monthSpin.setPreferredSize(new Dimension(35, 20));  
            monthSpin.setName("Month");  
            monthSpin.addChangeListener(this);  
            result.add(monthSpin);  
  
            JLabel monthLabel = new JLabel("月");  
            monthLabel.setForeground(controlTextColor);  
            result.add(monthLabel);  
  
            //如果這裡要能夠選擇,會要判斷很多東西,比如每個月分別由多少日,以及閏年問題.所以,就乾脆把Enable設為false  
            daySpin = new JSpinner(new SpinnerNumberModel(currentMonth, 1, 31, 1));  
            daySpin.setPreferredSize(new Dimension(35, 20));  
            daySpin.setName("Day");  
            daySpin.addChangeListener(this);  
            daySpin.setEnabled(false);  
            daySpin.setToolTipText("請下下面的日曆面板中進行選擇哪一天！");  
            result.add(daySpin);  
  
            JLabel dayLabel = new JLabel("日");  
            dayLabel.setForeground(controlTextColor);  
            result.add(dayLabel);  
  
            hourSpin = new JSpinner(new SpinnerNumberModel(currentHour, 0, 23, 1));  
            hourSpin.setPreferredSize(new Dimension(35, 20));  
            hourSpin.setName("Hour");  
            hourSpin.addChangeListener(this);  
            result.add(hourSpin);  
  
            JLabel hourLabel = new JLabel("時");  
            hourLabel.setForeground(controlTextColor);  
            result.add(hourLabel);  
  
            minuteSpin = new JSpinner(new SpinnerNumberModel(currentMinute, 0, 59, 1));  
            minuteSpin.setPreferredSize(new Dimension(35, 20));  
            minuteSpin.setName("Minute");  
            minuteSpin.addChangeListener(this);  
            result.add(minuteSpin);  
  
            JLabel minuteLabel = new JLabel("分");  
            hourLabel.setForeground(controlTextColor);  
            result.add(minuteLabel);  
  
            secondSpin = new JSpinner(new SpinnerNumberModel(currentSecond, 0, 59, 1));  
            secondSpin.setPreferredSize(new Dimension(35, 20));  
            secondSpin.setName("Second");  
            secondSpin.addChangeListener(this);  
            result.add(secondSpin);  
  
            JLabel secondLabel = new JLabel("秒");  
            hourLabel.setForeground(controlTextColor);  
            result.add(secondLabel);  
  
            return result;  
        }  
  
        private JPanel createWeekAndDayPanal() {  
            String colname[] = {"日", "一", "二", "三", "四", "五", "六"};  
            JPanel result = new JPanel();  
            // 設定固定字型，以免呼叫環境改變影響介面美觀  
            result.setFont(new Font("宋體", Font.PLAIN, 12));  
            result.setLayout(new GridLayout(7, 7));  
            result.setBackground(Color.white);  
            JLabel cell;  
  
            for (int i = 0; i < 7; i++) {  
                cell = new JLabel(colname[i]);  
                cell.setHorizontalAlignment(JLabel.RIGHT);  
                if (i == 0 || i == 6) {  
                    cell.setForeground(weekendFontColor);  
                } else {  
                    cell.setForeground(weekFontColor);  
                }  
                result.add(cell);  
            }  
  
            int actionCommandId = 0;  
            for (int i = 0; i < 6; i++) {  
                for (int j = 0; j < 7; j++) {  
                    JButton numberButton = new JButton();  
                    numberButton.setBorder(null);  
                    numberButton.setHorizontalAlignment(SwingConstants.RIGHT);  
                    numberButton.setActionCommand(String.valueOf(actionCommandId));  
                    numberButton.addActionListener(this);  
                    numberButton.setBackground(palletTableColor);  
                    numberButton.setForeground(dateFontColor);  
                    if (j == 0 || j == 6) {  
                        numberButton.setForeground(weekendFontColor);  
                    } else {  
                        numberButton.setForeground(dateFontColor);  
                    }  
                    daysButton[i][j] = numberButton;  
                    result.add(numberButton);  
                    actionCommandId++;  
                }  
            }  
  
            return result;  
        }  
  
        /** 得到DateChooserButton的當前text，本方法是為按鈕事件匿名類準備的。 */  
        public String getTextOfDateChooserButton() {  
            return getText();  
        }  
  
        /** 恢復DateChooserButton的原始日期時間text，本方法是為按鈕事件匿名類準備的。 */  
        public void restoreTheOriginalDate() {  
            String originalText = getOriginalText();  
            setText(originalText);  
        }  
  
        private JPanel createButtonBarPanel() {  
            JPanel panel = new JPanel();  
            panel.setLayout(new java.awt.GridLayout(1, 2));  
  
            JButton ok = new JButton("確定");  
            ok.addActionListener(new ActionListener() {  
  
                @Override  
                public void actionPerformed(ActionEvent e) {  
                    //記憶原始日期時間  
                    initOriginalText(getTextOfDateChooserButton());  
                    //隱藏日曆對話方塊  
                    dialog.setVisible(false);  
                }  
            });  
            panel.add(ok);  
  
            JButton cancel = new JButton("取消");  
            cancel.addActionListener(new ActionListener() {  
  
                @Override  
                public void actionPerformed(ActionEvent e) {  
                    //恢復原始的日期時間  
                    restoreTheOriginalDate();  
                    //隱藏日曆對話方塊  
                    dialog.setVisible(false);  
                }  
            });  
  
            panel.add(cancel);  
            return panel;  
        }  
  
        private JDialog createDialog(Frame owner) {  
            JDialog result = new JDialog(owner, "日期時間選擇", true);  
            result.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);  
            result.getContentPane().add(this, BorderLayout.CENTER);  
            result.pack();  
            result.setSize(width, height);  
            return result;  
        }  
  
        void showDateChooser(Point position) {  
            Frame owner = (Frame) SwingUtilities.getWindowAncestor(DateChooserJButton.this);  
            if (dialog == null || dialog.getOwner() != owner) {  
                dialog = createDialog(owner);  
            }  
            dialog.setLocation(getAppropriateLocation(owner, position));  
            flushWeekAndDay();  
            dialog.setVisible(true);  
        }  
  
        Point getAppropriateLocation(Frame owner, Point position) {  
            Point result = new Point(position);  
            Point p = owner.getLocation();  
            int offsetX = (position.x + width) - (p.x + owner.getWidth());  
            int offsetY = (position.y + height) - (p.y + owner.getHeight());  
  
            if (offsetX > 0) {  
                result.x -= offsetX;  
            }  
  
            if (offsetY > 0) {  
                result.y -= offsetY;  
            }  
  
            return result;  
        }  
  
        private Calendar getCalendar() {  
            Calendar result = Calendar.getInstance();  
            result.setTime(getDate());  
            return result;  
        }  
  
        private int getSelectedYear() {  
            return ((Integer) yearSpin.getValue()).intValue();  
        }  
  
        private int getSelectedMonth() {  
            return ((Integer) monthSpin.getValue()).intValue();  
        }  
  
        private int getSelectedHour() {  
            return ((Integer) hourSpin.getValue()).intValue();  
        }  
  
        private int getSelectedMinite() {  
            return ((Integer) minuteSpin.getValue()).intValue();  
        }  
  
        private int getSelectedSecond() {  
            return ((Integer) secondSpin.getValue()).intValue();  
        }  
  
        private void dayColorUpdate(boolean isOldDay) {  
            Calendar c = getCalendar();  
            int day = c.get(Calendar.DAY_OF_MONTH);  
            c.set(Calendar.DAY_OF_MONTH, 1);  
            int actionCommandId = day - 2 + c.get(Calendar.DAY_OF_WEEK);  
            int i = actionCommandId / 7;  
            int j = actionCommandId % 7;  
            if (isOldDay) {  
                daysButton[i][j].setForeground(dateFontColor);  
            } else {  
                daysButton[i][j].setForeground(todayBackColor);  
            }  
        }  
  
        private void flushWeekAndDay() {  
            Calendar c = getCalendar();  
            c.set(Calendar.DAY_OF_MONTH, 1);  
            int maxDayNo = c.getActualMaximum(Calendar.DAY_OF_MONTH);  
            int dayNo = 2 - c.get(Calendar.DAY_OF_WEEK);  
            for (int i = 0; i < 6; i++) {  
                for (int j = 0; j < 7; j++) {  
                    String s = "";  
                    if (dayNo >= 1 && dayNo <= maxDayNo) {  
                        s = String.valueOf(dayNo);  
                    }  
                    daysButton[i][j].setText(s);  
                    dayNo++;  
                }  
            }  
            dayColorUpdate(false);  
        }  
  
        /** 
         * 選擇日期時的響應事件 
         */  
        @Override  
        public void stateChanged(ChangeEvent e) {  
            JSpinner source = (JSpinner) e.getSource();  
            Calendar c = getCalendar();  
            if (source.getName().equals("Hour")) {  
                c.set(Calendar.HOUR_OF_DAY, getSelectedHour());  
                setDate(c.getTime());  
                return;  
            }  
            if (source.getName().equals("Minute")) {  
                c.set(Calendar.MINUTE, getSelectedMinite());  
                setDate(c.getTime());  
                return;  
            }  
            if (source.getName().equals("Second")) {  
                c.set(Calendar.SECOND, getSelectedSecond());  
                setDate(c.getTime());  
                return;  
            }  
  
            dayColorUpdate(true);  
  
            if (source.getName().equals("Year")) {  
                c.set(Calendar.YEAR, getSelectedYear());  
            } else if (source.getName().equals("Month")) {  
                c.set(Calendar.MONTH, getSelectedMonth() - 1);  
            }  
            setDate(c.getTime());  
            flushWeekAndDay();  
        }  
  
        /** 
         * 選擇日期時的響應事件 
         */  
        @Override  
        public void actionPerformed(ActionEvent e) {  
            JButton source = (JButton) e.getSource();  
            if (source.getText().length() == 0) {  
                return;  
            }  
            dayColorUpdate(true);  
            source.setForeground(todayBackColor);  
            int newDay = Integer.parseInt(source.getText());  
            Calendar c = getCalendar();  
            c.set(Calendar.DAY_OF_MONTH, newDay);  
            setDate(c.getTime());  
            //把daySpin中的值也變了  
            daySpin.setValue(Integer.valueOf(newDay));  
        }  
    }  
  
    /** 
     * 測試方法 
     */  
    public static void main(String[] args) {  
        JFrame mainFrame = new JFrame("測試");  
        mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
        mainFrame.setSize(300, 300);  
        mainFrame.setLayout(new java.awt.BorderLayout());  
        mainFrame.add(new DateChooserJButton(), java.awt.BorderLayout.CENTER);  
  
        Toolkit kit = Toolkit.getDefaultToolkit();  
        Dimension screenSize = kit.getScreenSize();  
        int width = (int) screenSize.getWidth();  
        int height = (int) screenSize.getHeight();  
        int w = mainFrame.getWidth();  
        int h = mainFrame.getHeight();  
        mainFrame.setLocation((width - w) / 2, (height - h) / 2);  
  
        mainFrame.setVisible(true);  
    }  
}  
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