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php爱好者> php文档>NetBeans好用的日期控件

NetBeans好用的日期控件

时间：2010-03-04 来源：mcuflower

NetBeans好用的日期控件 From: http://hi.baidu.com/dajuzidajuzi/blog/item/f5135a3e91c5b7c87d1e7193.html 注：本文用到的库文件org.netbeans.lib.awtextra.AbsoluteLayout和org.netbeans.lib.awtextra.AbsoluteConstraints在Netbeans的安装目录下可以找到。比如我用的Netbeans6.8的路径为 C:\Program Files\NetBeans 6.8\java3\sources\org\netbeans\lib\awtextra

大家都知道NETBEANS呀，居然没有日期控件，捶子！我这个是网上的改编的，因为网上的是单独可以用的（就是你考下来呀，放到NETBEANS就能运行了），但一般的日期控件是要嵌在其它页面控件中用，比如这个控件要放在PANEL里面，单独用的就不能嵌。比较高手的说你改一改不就能用了吗（所以偶改了），为了方便那些实在很懒的Y们，看好了直接往上贴吧（注意里面的文件之间的引用啊，不然是会找不到的，你不会连这个也不会吧？！！不会算了，下面下面的下面会说的啦）。。

效果图来一张：点击笑脸按钮出来选择日期框，选好了，日期就在文本框里面显示了。

下面上代码：二个文件DatePicker.java DateSelect.java，一个引用。。。

================================================================

DatePicker.java

package date;

import java.awt.*;
import java.awt.event.*;
import java.util.GregorianCalendar;
import java.util.Date;
import java.util.Calendar;
import java.text.DateFormat;
import java.text.FieldPosition;

import javax.swing.*;
import javax.swing.plaf.BorderUIResource;
import org.netbeans.lib.awtextra.AbsoluteConstraints;
import org.netbeans.lib.awtextra.AbsoluteLayout;

/**
*
* @author Administrator
*/
public class DatePicker extends JPanel {

    private static final long serialVersionUID = 1L;
    private static final int startX = 10;
    private static final int startY = 60;
    private static final Font smallFont = new Font("Dialog", Font.PLAIN, 10);
    private static final Font largeFont = new Font("Dialog", Font.PLAIN, 12);
    private static final Insets insets = new Insets(2, 2, 2, 2);
    private static final Color highlight = new Color(255, 255, 204);
    private static final Color white = new Color(255, 255, 255);
    private static final Color gray = new Color(204, 204, 204);
    private Component selectedDay = null;
    private GregorianCalendar selectedDate = null;
    private GregorianCalendar originalDate = null;
    private boolean hideOnSelect = true;
    private final JButton backButton = new JButton();
    private final JLabel monthAndYear = new JLabel();
    private final JButton forwardButton = new JButton();
    private final JLabel[] dayHeadings = new JLabel[]{
        new JLabel("日"),
        new JLabel("一"),
        new JLabel("二"),
        new JLabel("三"),
        new JLabel("四"),
        new JLabel("五"),
        new JLabel("六")
    };
    private final JLabel[][] daysInMonth = new JLabel[][]{
        {new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel()
        },
        {new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel()
        },
        {new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel()
        },
        {new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel()
        },
        {new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel()
        },
        {new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel(),
            new JLabel()
        }
    };
    private final JButton todayButton = new JButton();
    private final JButton cancelButton = new JButton();

    public DatePicker() {
        super();
        selectedDate = getToday();
        init();
    }

    public DatePicker(final Date initialDate) {
        super();
        if (null == initialDate) {
            selectedDate = getToday();
        } else {
            (selectedDate = new GregorianCalendar()).setTime(initialDate);
        }
        originalDate = new GregorianCalendar(
                selectedDate.get(Calendar.YEAR),
                selectedDate.get(Calendar.MONTH),
                selectedDate.get(Calendar.DATE));
        init();
    }

    public boolean isHideOnSelect() {
        return hideOnSelect;
    }

    public void setHideOnSelect(final boolean hideOnSelect) {
        if (this.hideOnSelect != hideOnSelect) {
            this.hideOnSelect = hideOnSelect;
            initButtons(false);
        }
    }

    public Date getDate() {
        if (null != selectedDate) {
            return selectedDate.getTime();
        }
        return null;
    }

    private void init() {
        setLayout(new AbsoluteLayout());
        this.setMinimumSize(new Dimension(161, 226));
        this.setMaximumSize(getMinimumSize());
        this.setPreferredSize(getMinimumSize());
        this.setBorder(new BorderUIResource.EtchedBorderUIResource());

        backButton.setFont(smallFont);
        backButton.setText("<");
        backButton.setMargin(insets);
        backButton.setDefaultCapable(false);
        backButton.addActionListener(new ActionListener() {

            public void actionPerformed(final ActionEvent evt) {
                onBackClicked(evt);
            }
        });
        add(backButton, new AbsoluteConstraints(10, 10, 20, 20));

        monthAndYear.setFont(largeFont);
        monthAndYear.setHorizontalAlignment(JTextField.CENTER);
        monthAndYear.setText(formatDateText(selectedDate.getTime()));
        add(monthAndYear, new AbsoluteConstraints(30, 10, 100, 20));

        forwardButton.setFont(smallFont);
        forwardButton.setText(">");
        forwardButton.setMargin(insets);
        forwardButton.setDefaultCapable(false);
        forwardButton.addActionListener(new ActionListener() {

            public void actionPerformed(final ActionEvent evt) {
                onForwardClicked(evt);
            }
        });
        add(forwardButton, new AbsoluteConstraints(130, 10, 20, 20));

        int x = startX;
        for (int ii = 0; ii < dayHeadings.length; ii++) {
            dayHeadings[ii].setOpaque(true);
            dayHeadings[ii].setBackground(Color.LIGHT_GRAY);
            dayHeadings[ii].setForeground(Color.WHITE);
            dayHeadings[ii].setHorizontalAlignment(JLabel.CENTER);
            add(dayHeadings[ii], new AbsoluteConstraints(x, 40, 21, 21));
            x += 20;
        }

        x = startX;
        int y = startY;
        for (int ii = 0; ii < daysInMonth.length; ii++) {
            for (int jj = 0; jj < daysInMonth[ii].length; jj++) {
                daysInMonth[ii][jj].setOpaque(true);
                daysInMonth[ii][jj].setBackground(white);
                daysInMonth[ii][jj].setFont(smallFont);
                daysInMonth[ii][jj].setHorizontalAlignment(JLabel.CENTER);
                daysInMonth[ii][jj].setText("");
                daysInMonth[ii][jj].addMouseListener(new MouseAdapter() {

                    public void mouseClicked(final MouseEvent evt) {
                        onDayClicked(evt);
                    }
                });
                add(daysInMonth[ii][jj], new AbsoluteConstraints(x, y, 21, 21));
                x += 20;
            }
            x = startX;
            y += 20;
        }

initButtons(true);

calculateCalendar();
}

    private void initButtons(final boolean firstTime) {
        if (firstTime) {
            final Dimension buttonSize = new Dimension(68, 24);
            todayButton.setText("今天");
            todayButton.setMargin(insets);
            todayButton.setMaximumSize(buttonSize);
            todayButton.setMinimumSize(buttonSize);
            todayButton.setPreferredSize(buttonSize);
            todayButton.setDefaultCapable(true);
            todayButton.setSelected(true);
            todayButton.addActionListener(new ActionListener() {

                public void actionPerformed(final ActionEvent evt) {
                    onToday(evt);
                }
            });

            cancelButton.setText("取消");
            cancelButton.setMargin(insets);
            cancelButton.setMaximumSize(buttonSize);
            cancelButton.setMinimumSize(buttonSize);
            cancelButton.setPreferredSize(buttonSize);
            cancelButton.addActionListener(new ActionListener() {

                public void actionPerformed(final ActionEvent evt) {
                    onCancel(evt);
                }
            });
        } else {
            this.remove(todayButton);
            this.remove(cancelButton);
        }

        if (hideOnSelect) {
            add(todayButton, new AbsoluteConstraints(25, 190, 52, -1));
            add(cancelButton, new AbsoluteConstraints(87, 190, 52, -1));
        } else {
            add(todayButton, new AbsoluteConstraints(55, 190, 52, -1));
        }
    }

    private void onToday(final java.awt.event.ActionEvent evt) {
        selectedDate = getToday();
        setVisible(!hideOnSelect);
        if (isVisible()) {
            monthAndYear.setText(formatDateText(selectedDate.getTime()));
            calculateCalendar();
        }
    }

    private void onCancel(final ActionEvent evt) {
        selectedDate = originalDate;
        setVisible(!hideOnSelect);
    }

    private void onForwardClicked(final java.awt.event.ActionEvent evt) {
        final int day = selectedDate.get(Calendar.DATE);
        selectedDate.set(Calendar.DATE, 1);
        selectedDate.add(Calendar.MONTH, 1);
        selectedDate.set(Calendar.DATE,
                Math.min(day, calculateDaysInMonth(selectedDate)));
        monthAndYear.setText(formatDateText(selectedDate.getTime()));
        calculateCalendar();
    }

    private void onBackClicked(final java.awt.event.ActionEvent evt) {
        final int day = selectedDate.get(Calendar.DATE);
        selectedDate.set(Calendar.DATE, 1);
        selectedDate.add(Calendar.MONTH, -1);
        selectedDate.set(Calendar.DATE,
                Math.min(day, calculateDaysInMonth(selectedDate)));
        monthAndYear.setText(formatDateText(selectedDate.getTime()));
        calculateCalendar();
    }

    private void onDayClicked(final java.awt.event.MouseEvent evt) {
        final javax.swing.JLabel fld = (javax.swing.JLabel) evt.getSource();
        if (!"".equals(fld.getText())) {
            fld.setBackground(highlight);
            selectedDay = fld;
            selectedDate.set(
                    Calendar.DATE,
                    Integer.parseInt(fld.getText()));
            setVisible(!hideOnSelect);
        }
    }

    private static GregorianCalendar getToday() {
        final GregorianCalendar gc = new GregorianCalendar();
        gc.set(Calendar.HOUR_OF_DAY, 0);
        gc.set(Calendar.MINUTE, 0);
        gc.set(Calendar.SECOND, 0);
        gc.set(Calendar.MILLISECOND, 0);
        return gc;
    }

    private void calculateCalendar() {
        if (null != selectedDay) {
            selectedDay.setBackground(white);
            selectedDay = null;
        }

        final GregorianCalendar c = new GregorianCalendar(
                selectedDate.get(Calendar.YEAR),
                selectedDate.get(Calendar.MONTH),
                1);

final int maxDay = calculateDaysInMonth(c);

final int selectedDay = Math.min(maxDay, selectedDate.get(
Calendar.DATE));

        int dow = c.get(Calendar.DAY_OF_WEEK);
        for (int dd = 0; dd < dow; dd++) {
            daysInMonth[0][dd].setText("");
        }

        int week;
        do {
            week = c.get(Calendar.WEEK_OF_MONTH);
            dow = c.get(Calendar.DAY_OF_WEEK);
            final JLabel fld = this.daysInMonth[week - 1][dow - 1];
            fld.setText(Integer.toString(c.get(Calendar.DATE)));
            if (selectedDay == c.get(Calendar.DATE)) {
                fld.setBackground(highlight);
                this.selectedDay = fld;
            }
            if (c.get(Calendar.DATE) >= maxDay) {
                break;
            }
            c.add(Calendar.DATE, 1);
        } while (c.get(Calendar.DATE) <= maxDay);

        week--;
        for (int ww = week; ww < daysInMonth.length; ww++) {
            for (int dd = dow; dd < daysInMonth[ww].length; dd++) {
                daysInMonth[ww][dd].setText("");
            }
            dow = 0;
        }

        c.set(Calendar.DATE, selectedDay);
        selectedDate = c;
    }

    private static int calculateDaysInMonth(final Calendar c) {
        int daysInMonth = 0;
        switch (c.get(Calendar.MONTH)) {
            case 0:
            case 2:
            case 4:
            case 6:
            case 7:
            case 9:
            case 11:
                daysInMonth = 31;
                break;
            case 3:
            case 5:
            case 8:
            case 10:
                daysInMonth = 30;
                break;
            case 1:
                final int year = c.get(Calendar.YEAR);
                daysInMonth =
                        (0 == year % 1000) ? 29 : (0 == year % 100) ? 28 : (0 == year % 4) ? 29 : 28;
                break;
        }
        return daysInMonth;
    }

private static String formatDateText(final Date dt) {
final DateFormat df = DateFormat.getDateInstance(DateFormat.LONG);

        final StringBuffer mm = new StringBuffer();
        final StringBuffer yy = new StringBuffer();
        final FieldPosition mmfp = new FieldPosition(DateFormat.MONTH_FIELD);
        final FieldPosition yyfp = new FieldPosition(DateFormat.YEAR_FIELD);
        df.format(dt, mm, mmfp);
        df.format(dt, yy, yyfp);
        return (mm.toString().substring(mmfp.getBeginIndex(), mmfp.getEndIndex()) +
                "月 " + yy.toString().substring(yyfp.getBeginIndex(), yyfp.getEndIndex()) + "年");
    }
}

=============================================================================

DateSelect.java

package date;

import java.awt.Point;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.Date;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JTextField;

/*****************************
*日期组件的应用
*按钮接口

**************************/
public class DateSelect {
      private JDialog dlg;
     private DatePicker dp;
     Point origin = new Point();
     private JTextField datetext;

//接口setdatetext
public void setdatetext(JTextField text){

this.datetext=text;
}

      public void onButtonClick(final java.awt.event.ActionEvent evt) {
        if ("".equals(datetext.getText())) {
            dp = new DatePicker();
        } else {
            dp = new DatePicker(stringToDate(datetext.getText()));
        }
       dp.addComponentListener(new Listener());

final Point p = datetext.getLocationOnScreen();
p.setLocation(p.getX(), p.getY() - 1 + datetext.getSize().getHeight());

dlg = new JDialog(new JFrame(), true);

dlg.addMouseListener(new MouseAdapter() {

            public void mousePressed(MouseEvent e) {
                origin.x = e.getX();
                origin.y = e.getY();
            }
        });
        dlg.addMouseMotionListener(new MouseMotionAdapter() {

            public void mouseDragged(MouseEvent e) {
                Point p = dlg.getLocation();
                dlg.setLocation(p.x + e.getX() - origin.x, p.y + e.getY() - origin.y);
            }
        });

        dlg.setLocation(p);
        dlg.setResizable(false);
        dlg.setUndecorated(true);
        dlg.getContentPane().add(dp);
        dlg.pack();
        dlg.setVisible(true);
    }

    final class Listener extends ComponentAdapter {
      public void componentHidden(final ComponentEvent evt) {
            final Date dt = ((DatePicker) evt.getSource()).getDate();
            if (null != dt) {
                datetext.setText(dateToString(dt));
            }
            dlg.dispose();

}
}

      public Date getDate() {
        return stringToDate(datetext.getText());
    }

    public void setDate(Date date) {
        String v = dateToString(date);
        if (v == null) {
            v = "";
        }
        datetext.setText(v);
    }

     private static String dateToString(final Date dt) {
        if (null != dt) {
            return DateFormat.getDateInstance(DateFormat.LONG).format(dt);
        }
        return null;
    }

    private static Date stringToDate(final String s) {
        try {
            return DateFormat.getDateInstance(DateFormat.LONG).parse(s);
        } catch (ParseException e) {
            return null;
        }
    }

}

==============================================================

上接口了(就是引用！)，这段是放在你要用到此控件的文件里面，文件得定义个textfield（datetext）,还有个button(datebutton)，会不？不会！！捶子！！你火星人？？

datebutton = new javax.swing.JButton();

datetext = new javax.swing.JTextField();

（如果你用GUI的话，你想在哪里放这个控件就象这样拖成一个左边一个右边就行了，NETBEAN会自己定义的，你不会问按钮在哪吧？按钮是笑脸那个，点了，就出现日期框，选完日期就在文本框里面显示日期。。。。倒啊，，如果想知道怎么把按钮变成想要的图，请直接返回百度！！不要问我雷人的问题！）

记得引入文件。。

import date.DateSelect;

以下的放在此文件的构造函数就行了（不明白什么是构造函数的请转页面，去百度看书！）

////设置TEXTFIELD属性：

        datetext.setText("");
        datetext.setEditable(false);
        datetext.setBackground(new Color(255, 255, 255));

/////笑脸按钮加监听：

datebutton.addActionListener(new ActionListener() {

            public void actionPerformed(final ActionEvent evt) {
                DateSelect ds=new DateSelect();
                ds.setdatetext(datetext);
                ds.onButtonClick(evt);
                         }
            }
        });

====================================================

试试能不能用吧，表说你不能用啊。。你没有把位置放对，怎么能用呢，表说里面有错啊，里面文件没有引入当然会有错啦。。。。两个文件放一个目录下，直接往上贴就行了，引用是要贴在你要放控件的页面代码的构造函数里的。表和我说好复杂，偶真想捶你们！！都方便到这地步了！要好好学习懂吗？

支持的顶啊！！！