Swing 自定義日期選擇控件

jopen 9年前發布 | 2K 次閱讀 Java Swing
Swing日期選擇器采用觸發事件的方式,這樣的話,就可以將DateChooser添加到任何組件之上, 任何組件都可以捕獲日期選擇的事件,然后進行相應處理
1. 如何對事件進行管理,可以查看這個 http://my.oschina.net/abian/blog/497296
截圖:
package unit;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.EventListener;
import java.util.GregorianCalendar;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.event.EventListenerList;
/**

日期選擇器 采用觸發事件的方式,這樣的話,就可以將DateChooser添加到任何組件之上,
任何組件都可以捕獲日期選擇的事件,然后進行相應處理

@author changwen
@date Aug 26, 2015
*/

@SuppressWarnings("all")
public class DateChooser extends JPanel {

protected Color weekBackgroundColor = new Color(189, 235, 238);
protected Color weekendBtnFontColor = new Color(240, 64, 64); // color
protected Color selectedColor = weekBackgroundColor;
protected Font labelFont = new Font("Arial", Font.PLAIN, 10);
protected Color defaultBtnFontColor = Color.BLACK;
protected Color defaultBtnBackgroundColor = Color.WHITE;
private Calendar cal = null;
private Calendar todayCal = null;
private int year;
private int month;
private int day;
private JPanel controllPanel = null;
private JPanel dateContainerPanel = null;
private JLabel todayLabel = null;
protected DateButton[][] buttonDays = null;
public JComboBox monthChoice;
public JComboBox yearChoice;
protected String[] weekTitle = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
protected int[] months = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
private EventListenerList actionListenerList = new EventListenerList();

public DateChooser() {
    buttonDays = new DateButton[6][7];
    cal = Calendar.getInstance();
    todayCal = Calendar.getInstance();
    this.year = cal.get(Calendar.YEAR);
    this.month = cal.get(Calendar.MONTH);
    this.day = cal.get(Calendar.DATE);
    JPanel oprPanel = createControlPanel();
    this.setLayout(new BorderLayout(0, 0));
    dateContainerPanel = new JPanel();
    createDayPanel(cal);
    setActiveDay(day);
    this.add(oprPanel, BorderLayout.NORTH);
    this.add(dateContainerPanel, BorderLayout.CENTER);

}

@SuppressWarnings("all")
public JPanel createControlPanel() {
    controllPanel = new JPanel();
    controllPanel.setBackground(Color.WHITE);
    Box hBox = Box.createHorizontalBox();
    String strToday = formatDate(todayCal);
    todayLabel = new JLabel(strToday);
    monthChoice = new JComboBox();
    for (int i = 0; i < months.length; i++) {
        monthChoice.addItem(months[i]);
    }

    monthChoice.setSelectedItem(months[month]);
    monthChoice.setPreferredSize(new Dimension(monthChoice.getPreferredSize().width,
            monthChoice.getPreferredSize().height));

    monthChoice.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent ae) {
            int i = monthChoice.getSelectedIndex();
            if (i >= 0) {
                month = i;
                Calendar cal = new GregorianCalendar(year, month, 1);
                year = cal.get(Calendar.YEAR);
                month = cal.get(Calendar.MONTH);
                createDayPanel(cal);
            }
        }
    });
    int currentYear = todayCal.get(Calendar.YEAR);
    final int gapYears = 10;
    yearChoice = new JComboBox();
    for (int i = currentYear - gapYears; i < currentYear + gapYears; i++) {
        yearChoice.addItem(i);
    }

    yearChoice.setSelectedIndex(gapYears);
    yearChoice.setPreferredSize(new Dimension(yearChoice.getPreferredSize().width,
            yearChoice.getPreferredSize().height));

    yearChoice.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent ae) {
            System.out.println(yearChoice.getSelectedIndex());
            if (yearChoice.getSelectedIndex() != gapYears) {
                Integer selYear = (Integer) yearChoice.getSelectedItem();
                Calendar cal = new GregorianCalendar(year, month, 1);
                cal.set(Calendar.YEAR, selYear);
                year = cal.get(Calendar.YEAR);
                month = cal.get(Calendar.MONTH);
                createDayPanel(cal);
            }
        }
    });

    hBox.add(todayLabel);
    hBox.add(Box.createHorizontalStrut(5));
    hBox.add(monthChoice);
    hBox.add(Box.createHorizontalStrut(8));
    hBox.add(yearChoice);
    hBox.add(Box.createHorizontalStrut(8));

    controllPanel.add(hBox, BorderLayout.NORTH);
    return controllPanel;

}

/**
 * 創建日期組件
 * 
 * @param cal
 *            void
 */
public void createDayPanel(Calendar cal) {
    dateContainerPanel.removeAll();
    dateContainerPanel.revalidate();
    cal.set(Calendar.DAY_OF_MONTH, 1);
    cal.add(Calendar.MONTH, 1);
    cal.add(Calendar.DAY_OF_MONTH, -1);
    int weeks = cal.get(Calendar.WEEK_OF_MONTH);

    GridLayout grid = new GridLayout(7, 7, 0, 0);
    dateContainerPanel.setLayout(grid);
    cal.set(Calendar.DAY_OF_MONTH, 1);
    int weekday = cal.get(Calendar.DAY_OF_WEEK);
    System.out.println("weekday+" + weekday);
    cal.add(Calendar.DAY_OF_MONTH, 1 - weekday);
    System.out.println("Calendar.DAY_OF_MONTH=" + cal.get(Calendar.DAY_OF_MONTH));

    for (int i = 0; i < 7; i++) {
        JLabel weekLabel = new JLabel(weekTitle[i], SwingConstants.CENTER);
        weekLabel.setFont(labelFont);
        weekLabel.setOpaque(true);
        weekLabel.setBackground(weekBackgroundColor);
        dateContainerPanel.add(weekLabel);
    }
    DayButtonActionListener dayButtonActionListener = new DayButtonActionListener();

    for (int i = 0; i < 6; i++) {
        for (int j = 0; j < 7; j++) {
            int curMonth = cal.get(Calendar.MONTH);
            DateButton button = null;
            if (curMonth != month) {
                button = new DateButton(" ");
                button.setEnabled(false);
                button.setBackground(defaultBtnBackgroundColor);
            } else {
                int currentDay = cal.get(Calendar.DAY_OF_MONTH);
                button = new DateButton(currentDay + "");
                button.setHorizontalTextPosition(SwingConstants.RIGHT);
                button.setFont(labelFont);
                button.setBackground(defaultBtnBackgroundColor);
                button.setSelectedBackground(weekBackgroundColor);
                if (currentDay == todayCal.get(Calendar.DAY_OF_MONTH) && month == todayCal.get(Calendar.MONTH)
                        && year == todayCal.get(Calendar.YEAR)) {
                    button.setBorder(BorderFactory.createLineBorder(weekendBtnFontColor));
                }
                if (cal.get(Calendar.MONTH) != month) {
                    button.setForeground(Color.BLUE);
                }
                if (j == 0 || j == 6) {
                    button.setForeground(weekendBtnFontColor);
                } else {
                    button.setForeground(defaultBtnFontColor);
                }

            }
            button.addActionListener(dayButtonActionListener);
            buttonDays[i][j] = button;
            dateContainerPanel.add(buttonDays[i][j]);
            cal.add(Calendar.DAY_OF_MONTH, 1);
        }
    }

}

/**
 * 選中莫一天
 * 
 * @param selectedDay
 *            void
 */
public void setActiveDay(int selectedDay) {
    clearAllActiveDay();
    if (selectedDay <= 0) {
        day = new GregorianCalendar().get(Calendar.DAY_OF_MONTH);
    } else {
        day = selectedDay;
    }
    int leadGap = new GregorianCalendar(year, month, 1).get(Calendar.DAY_OF_WEEK) - 1;
    JButton selectedButton = buttonDays[(leadGap + selectedDay - 1) / 7][(leadGap + selectedDay - 1) % 7];
    selectedButton.setBackground(weekBackgroundColor);
}

/**
 * 清除所有選擇的日期
 * 
 */
public void clearAllActiveDay() {
    for (int i = 0; i < 6; i++) {
        for (int j = 0; j < 7; j++) {
            JButton button = buttonDays[i][j];
            if (button.getText() != null && button.getText().trim().length() > 0) {
                button.setBackground(defaultBtnBackgroundColor);
                button.revalidate();
            }
        }

    }
}

/**
 * 獲取選中的日期
 * 
 * @return String
 */
public String getSelectedDate() {
    Calendar cal = new GregorianCalendar(year, month, day);
    return formatDate(cal);
}

private String formatDate(Calendar cal) {
    String pattern = "MM-dd-yyyy";
    SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
    return dateFormat.format(cal.getTime());
}

class DayButtonActionListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
        JButton button = (JButton) e.getSource();
        if (button.getText() != null && button.getText().trim().length() > 0) {
            day = Integer.parseInt(button.getText());
            setActiveDay(day);
            fireActionPerformed(e);// fire button click event
            /**
             * 采用觸發事件的方式,這樣的話,就可以將DateChooser添加到任何組件之上,
             * 任何組件都可以捕獲日期選擇的事件,然后進行相應處理
             */
        }
    }
}

public void addActionListener(ActionListener actionListener) {
    actionListenerList.add(ActionListener.class, actionListener);
}

public void removeActionListener(ActionListener actionListener) {
    actionListenerList.remove(ActionListener.class, actionListener);
}

/**
 * 事件管理,觸發事件
 * 
 * @param actionEvent
 *            void
 */
protected void fireActionPerformed(ActionEvent actionEvent) {
    EventListener listenerList[] = actionListenerList.getListeners(ActionListener.class);
    for (int i = 0, n = listenerList.length; i < n; i++) {
        ((ActionListener) listenerList[i]).actionPerformed(actionEvent);
    }
}

public static void main(String[] args) {

    JFrame frame = new JFrame("xxxxxx");
    frame.setSize(400, 300);

    final DateChooser datePicker = new DateChooser();
    datePicker.addActionListener(new ActionListener() {// 事件捕獲

                public void actionPerformed(ActionEvent e) {
                    System.out.println(datePicker.getSelectedDate());

                }
            });
    frame.getContentPane().add(datePicker);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);

}


}
//-------自定義按鈕--------------
package unit;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.RenderingHints;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.JButton;
public class DateButton extends JButton {
    private static final long serialVersionUID = 1L;
    protected Color normalBackground;
    protected Color selectedBackground;
    public DateButton() {
        initAttributes();
    }

public DateButton(Icon icon) {
    super(icon);
    initAttributes();
}

public DateButton(String text, Icon icon) {
    super(text, icon);
    initAttributes();
}

public DateButton(String text) {
    super(text);
    initAttributes();
}

public DateButton(Action a) {
    super(a);
    initAttributes();
}

public void initAttributes() {
    setRolloverEnabled(true);
    setBorder(BorderFactory.createEmptyBorder());
    setContentAreaFilled(false);
    setFocusPainted(false);
    setNormalBackground(new Color(216, 216, 216));
    setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
}

@Override
public void paint(Graphics g) {

    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    Paint oldPaint = g2d.getPaint();

    if ((getModel().isSelected() || getModel().isPressed()) && selectedBackground != null) {
        g2d.setPaint(selectedBackground);
        g2d.fillRect(0, 0, getWidth(), getHeight());
    } else if (getNormalBackground() != null) {
        g2d.setPaint(getNormalBackground());
        g2d.fillRect(0, 0, getWidth(), getHeight());
    }
    g2d.setPaint(oldPaint);
    super.paint(g2d);

}

public void clearDefaultAttribute() {
    setNormalBackground(null);
}

@Override
public void setBackground(Color bg) {
    super.setBackground(bg);
    normalBackground = bg;
}

public Color getNormalBackground() {
    return normalBackground;
}

public void setNormalBackground(Color normalBackground) {
    super.setBackground(normalBackground);
    this.normalBackground = normalBackground;
}



public void setSelectedBackground(Color selectedBackground) {
    this.selectedBackground = selectedBackground;
}


}</pre> 

 來自：http://my.oschina.net/abian/blog/497331
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Java Swing
Swing 自定義日期選擇控件

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