How to use

DateChooserPanel

in

org.jfree.ui

/**
 * Defines the color for the buttons representing the current month.
 *
 * @param chosenMonthButtonColor the color for the current month.
 */
public void setChosenMonthButtonColor(final Color chosenMonthButtonColor) {
  if (chosenMonthButtonColor == null) {
    throw new NullPointerException("UIColor must not be null.");
  }
  final Color oldValue = this.chosenMonthButtonColor;
  this.chosenMonthButtonColor = chosenMonthButtonColor;
  refreshButtons();
  firePropertyChange("chosenMonthButtonColor", oldValue, 
      chosenMonthButtonColor);
}

/**
 * Update the button labels and colors to reflect date selection.
 */
private void refreshButtons() {
  final Calendar c = getFirstVisibleDate();
  for (int i = 0; i < 42; i++) {
    final JButton b = this.buttons[i];
    b.setText(Integer.toString(c.get(Calendar.DATE)));
    b.setBackground(getButtonColor(c));
    c.add(Calendar.DATE, 1);
  }
}

  /**
   * Sets the range of years available for selection.
   * 
   * @param yearSelectionRange  the range.
   */
  public void setYearSelectionRange(final int yearSelectionRange) {
    final int oldYearSelectionRange = this.yearSelectionRange;
    this.yearSelectionRange = yearSelectionRange;
    refreshYearSelector();
    firePropertyChange("yearSelectionRange", oldYearSelectionRange, 
        yearSelectionRange);
  }
}

/**
 * Constructs a new date chooser panel.
 *
 * @param calendar     the calendar controlling the date.
 * @param controlPanel a flag that indicates whether or not the 'today' 
 *                     button should appear on the panel.
 */
public DateChooserPanel(final Calendar calendar, 
            final boolean controlPanel) {
  super(new BorderLayout());
  this.chosenDateButtonColor = UIManager.getColor("textHighlight");
  this.chosenMonthButtonColor = UIManager.getColor("control");
  this.chosenOtherButtonColor = UIManager.getColor("controlShadow");
  // the default date is today...
  this.chosenDate = calendar;
  this.firstDayOfWeek = calendar.getFirstDayOfWeek();
  this.WEEK_DAYS = new int[7];
  for (int i = 0; i < 7; i++) {
    this.WEEK_DAYS[i] = ((this.firstDayOfWeek + i - 1) % 7) + 1;
  }
  add(constructSelectionPanel(), BorderLayout.NORTH);
  add(getCalendarPanel(), BorderLayout.CENTER);
  if (controlPanel) {
    add(constructControlPanel(), BorderLayout.SOUTH);
  }
  setDate(calendar.getTime());
}

this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 
    maxDayOfMonth));
refreshButtons();
  this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 
    maxDayOfMonth));
  refreshYearSelector();
  refreshButtons();
setDate(new Date());
final Calendar cal = getFirstVisibleDate();
cal.add(Calendar.DATE, i);
setDate(cal.getTime());

/**
 * Changes the contents of the year selection JComboBox to reflect the 
 * chosen date and the year range.
 */
private void refreshYearSelector() {
  if (!this.refreshing) {
    this.refreshing = true;
    this.yearSelector.removeAllItems();
    final Integer[] years = getYears(this.chosenDate.get(
        Calendar.YEAR));
    for (int i = 0; i < years.length; i++) {
      this.yearSelector.addItem(years[i]);
    }
    this.yearSelector.setSelectedItem(new Integer(this.chosenDate.get(
        Calendar.YEAR)));
    this.refreshing = false;
  }
}

/**
 * Returns the first date that is visible in the grid.  This should always 
 * be in the month preceding the month of the selected date.
 *
 * @return the date.
 */
private Calendar getFirstVisibleDate() {
  final Calendar c = Calendar.getInstance();
  c.set(this.chosenDate.get(Calendar.YEAR), this.chosenDate.get(
      Calendar.MONTH), 1);
  c.add(Calendar.DATE, -1);
  while (c.get(Calendar.DAY_OF_WEEK) != getFirstDayOfWeek()) {
    c.add(Calendar.DATE, -1);
  }
  return c;
}

/**
 * Returns the button color according to the specified date.
 *
 * @param theDate the date.
 * @return the color.
 */
private Color getButtonColor(final Calendar theDate) {
  if (equalDates(theDate, this.chosenDate)) {
    return this.chosenDateButtonColor;
  }
  else if (theDate.get(Calendar.MONTH) == this.chosenDate.get(
      Calendar.MONTH)) {
    return this.chosenMonthButtonColor;
  }
  else {
    return this.chosenOtherButtonColor;
  }
}

/**
 * Constructs a new date chooser panel.
 *
 * @param calendar     the calendar controlling the date.
 * @param controlPanel a flag that indicates whether or not the 'today' 
 *                     button should appear on the panel.
 */
public DateChooserPanel(final Calendar calendar, 
            final boolean controlPanel) {
  super(new BorderLayout());
  this.chosenDateButtonColor = UIManager.getColor("textHighlight");
  this.chosenMonthButtonColor = UIManager.getColor("control");
  this.chosenOtherButtonColor = UIManager.getColor("controlShadow");
  // the default date is today...
  this.chosenDate = calendar;
  this.firstDayOfWeek = calendar.getFirstDayOfWeek();
  this.WEEK_DAYS = new int[7];
  for (int i = 0; i < 7; i++) {
    this.WEEK_DAYS[i] = ((this.firstDayOfWeek + i - 1) % 7) + 1;
  }
  add(constructSelectionPanel(), BorderLayout.NORTH);
  add(getCalendarPanel(), BorderLayout.CENTER);
  if (controlPanel) {
    add(constructControlPanel(), BorderLayout.SOUTH);
  }
  setDate(calendar.getTime());
}

this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 
    maxDayOfMonth));
refreshButtons();
  this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 
    maxDayOfMonth));
  refreshYearSelector();
  refreshButtons();
setDate(new Date());
final Calendar cal = getFirstVisibleDate();
cal.add(Calendar.DATE, i);
setDate(cal.getTime());

  /**
   * Sets the range of years available for selection.
   * 
   * @param yearSelectionRange  the range.
   */
  public void setYearSelectionRange(final int yearSelectionRange) {
    final int oldYearSelectionRange = this.yearSelectionRange;
    this.yearSelectionRange = yearSelectionRange;
    refreshYearSelector();
    firePropertyChange("yearSelectionRange", oldYearSelectionRange, 
        yearSelectionRange);
  }
}

/**
 * Changes the contents of the year selection JComboBox to reflect the 
 * chosen date and the year range.
 */
private void refreshYearSelector() {
  if (!this.refreshing) {
    this.refreshing = true;
    this.yearSelector.removeAllItems();
    final Integer[] years = getYears(this.chosenDate.get(
        Calendar.YEAR));
    for (int i = 0; i < years.length; i++) {
      this.yearSelector.addItem(years[i]);
    }
    this.yearSelector.setSelectedItem(new Integer(this.chosenDate.get(
        Calendar.YEAR)));
    this.refreshing = false;
  }
}

/**
 * Returns the first date that is visible in the grid.  This should always 
 * be in the month preceding the month of the selected date.
 *
 * @return the date.
 */
private Calendar getFirstVisibleDate() {
  final Calendar c = Calendar.getInstance();
  c.set(this.chosenDate.get(Calendar.YEAR), this.chosenDate.get(
      Calendar.MONTH), 1);
  c.add(Calendar.DATE, -1);
  while (c.get(Calendar.DAY_OF_WEEK) != getFirstDayOfWeek()) {
    c.add(Calendar.DATE, -1);
  }
  return c;
}

/**
 * Returns the button color according to the specified date.
 *
 * @param theDate the date.
 * @return the color.
 */
private Color getButtonColor(final Calendar theDate) {
  if (equalDates(theDate, this.chosenDate)) {
    return this.chosenDateButtonColor;
  }
  else if (theDate.get(Calendar.MONTH) == this.chosenDate.get(
      Calendar.MONTH)) {
    return this.chosenMonthButtonColor;
  }
  else {
    return this.chosenOtherButtonColor;
  }
}

/**
 * Constructs a new date chooser panel.
 *
 * @param calendar     the calendar controlling the date.
 * @param controlPanel a flag that indicates whether or not the 'today' 
 *                     button should appear on the panel.
 */
public DateChooserPanel(final Calendar calendar, 
            final boolean controlPanel) {
  super(new BorderLayout());
  this.chosenDateButtonColor = UIManager.getColor("textHighlight");
  this.chosenMonthButtonColor = UIManager.getColor("control");
  this.chosenOtherButtonColor = UIManager.getColor("controlShadow");
  // the default date is today...
  this.chosenDate = calendar;
  this.firstDayOfWeek = calendar.getFirstDayOfWeek();
  this.WEEK_DAYS = new int[7];
  for (int i = 0; i < 7; i++) {
    this.WEEK_DAYS[i] = ((this.firstDayOfWeek + i - 1) % 7) + 1;
  }
  add(constructSelectionPanel(), BorderLayout.NORTH);
  add(getCalendarPanel(), BorderLayout.CENTER);
  if (controlPanel) {
    add(constructControlPanel(), BorderLayout.SOUTH);
  }
  setDate(calendar.getTime());
}

this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 
    maxDayOfMonth));
refreshButtons();
  this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 
    maxDayOfMonth));
  refreshYearSelector();
  refreshButtons();
setDate(new Date());
final Calendar cal = getFirstVisibleDate();
cal.add(Calendar.DATE, i);
setDate(cal.getTime());

/**
 * Redefines the color for the buttons representing the other months.
 *
 * @param chosenOtherButtonColor a color.
 */
public void setChosenOtherButtonColor(final Color chosenOtherButtonColor) {
  if (chosenOtherButtonColor == null) {
    throw new NullPointerException("UIColor must not be null.");
  }
  final Color oldValue = this.chosenOtherButtonColor;
  this.chosenOtherButtonColor = chosenOtherButtonColor;
  refreshButtons();
  firePropertyChange("chosenOtherButtonColor", oldValue, 
      chosenOtherButtonColor);
}

/**
 * Update the button labels and colors to reflect date selection.
 */
private void refreshButtons() {
  final Calendar c = getFirstVisibleDate();
  for (int i = 0; i < 42; i++) {
    final JButton b = this.buttons[i];
    b.setText(Integer.toString(c.get(Calendar.DATE)));
    b.setBackground(getButtonColor(c));
    c.add(Calendar.DATE, 1);
  }
}

  /**
   * Sets the range of years available for selection.
   * 
   * @param yearSelectionRange  the range.
   */
  public void setYearSelectionRange(final int yearSelectionRange) {
    final int oldYearSelectionRange = this.yearSelectionRange;
    this.yearSelectionRange = yearSelectionRange;
    refreshYearSelector();
    firePropertyChange("yearSelectionRange", oldYearSelectionRange, 
        yearSelectionRange);
  }
}

/**
 * Changes the contents of the year selection JComboBox to reflect the 
 * chosen date and the year range.
 */
private void refreshYearSelector() {
  if (!this.refreshing) {
    this.refreshing = true;
    this.yearSelector.removeAllItems();
    final Integer[] years = getYears(this.chosenDate.get(
        Calendar.YEAR));
    for (int i = 0; i < years.length; i++) {
      this.yearSelector.addItem(years[i]);
    }
    this.yearSelector.setSelectedItem(new Integer(this.chosenDate.get(
        Calendar.YEAR)));
    this.refreshing = false;
  }
}