/*
* Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.lwuit;
import com.sun.lwuit.events.ActionEvent;
import com.sun.lwuit.events.ActionListener;
import com.sun.lwuit.events.DataChangedListener;
import com.sun.lwuit.plaf.Style;
import com.sun.lwuit.layouts.BorderLayout;
import com.sun.lwuit.layouts.BoxLayout;
import com.sun.lwuit.layouts.FlowLayout;
import com.sun.lwuit.layouts.GridLayout;
import com.sun.lwuit.list.DefaultListModel;
import com.sun.lwuit.list.ListModel;
import com.sun.lwuit.plaf.UIManager;
import com.sun.lwuit.util.EventDispatcher;
import java.util.Date;
import java.util.Hashtable;
import java.util.TimeZone;
import java.util.Vector;
/**
* Date widget for selecting a date/time value.
* <p>To localize strings for month names
* use the values "Calendar.Month" in the resource localization e.g. "Calendar.Jan", "Calendar.Feb" etc...
*
* @author Iddo Ari, Shai Almog
*/
public class Calendar extends Container {
private ComboBox month;
private ComboBox year;
private MonthView mv;
private static final String[] MONTHS = new String[]{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
private static final String[] DAYS = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
private static final String[] LABELS = {"Su", "M", "Tu", "W", "Th", "F", "Sa"};
static final long MINUTE = 1000 * 60;
static final long HOUR = MINUTE * 60;
static final long DAY = HOUR * 24;
static final long WEEK = DAY * 7;
private EventDispatcher dispatcher = new EventDispatcher();
private EventDispatcher dataChangeListeners = new EventDispatcher();
private long[] dates = new long[42];
/**
* Creates a new instance of Calendar set to the given date based on time
* since epoch (the java.util.Date convention)
*
* @param time time since epoch
*/
public Calendar(long time) {
super(new BorderLayout());
setUIID("Calendar");
Container upper = new Container(new FlowLayout(Component.CENTER));
month = new ComboBox();
year = new ComboBox();
mv = new MonthView(time);
Vector months = new Vector();
for (int i = 0; i < MONTHS.length; i++) {
months.addElement("" + getLocalizedMonth(i));
}
ListModel monthsModel = new DefaultListModel(months);
int selected = months.indexOf(getLocalizedMonth(mv.getMonth()));
month.setModel(monthsModel);
month.setSelectedIndex(selected);
month.addActionListener(mv);
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(new java.util.Date(time));
month.getStyle().setBgTransparency(0);
int y = cal.get(java.util.Calendar.YEAR);
Vector years = new Vector();
for (int i = 2100; i > 1900; i--) {
years.addElement("" + i);
}
ListModel yearModel = new DefaultListModel(years);
selected = years.indexOf("" + y);
year.setModel(yearModel);
year.setSelectedIndex(selected);
year.getStyle().setBgTransparency(0);
year.addActionListener(mv);
Container cnt = new Container(new BoxLayout(BoxLayout.X_AXIS));
cnt.setRTL(false);
Container dateCnt = new Container(new BoxLayout(BoxLayout.X_AXIS));
dateCnt.setUIID("CalendarDate");
dateCnt.addComponent(month);
dateCnt.addComponent(year);
cnt.addComponent(dateCnt);
upper.addComponent(cnt);
addComponent(BorderLayout.NORTH, upper);
addComponent(BorderLayout.CENTER, mv);
}
/**
* Constructs a calendar with the current date and time
*/
public Calendar() {
this(System.currentTimeMillis());
}
/**
* Returns the time for the current calendar.
*
* @return the time for the current calendar.
*/
public long getSelectedDay() {
return mv.getSelectedDay();
}
private String getLocalizedMonth(int i) {
Hashtable t = UIManager.getInstance().getResourceBundle();
String text = MONTHS[i];
if (t != null) {
Object o = t.get("Calendar." + text);
if (o != null) {
text = (String) o;
}
}
return text;
}
void componentChanged() {
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(java.util.Calendar.YEAR, mv.getYear());
cal.set(java.util.Calendar.MONTH, mv.getMonth());
cal.set(java.util.Calendar.DAY_OF_MONTH, mv.getDayOfMonth());
month.getParent().revalidate();
}
/**
* Return the date object matching the current selection
*
* @return the date object matching the current selection
*/
public Date getDate() {
return new Date(mv.getSelectedDay());
}
/**
* Sets the current date in the view and the selected date to be the same.
*
* @param d new date
*/
public void setDate(Date d) {
mv.setSelectedDay(d.getTime());
mv.setCurrentDay(mv.currentDay, true);
componentChanged();
}
/**
* This method sets the Calendar selected day
* @param d the selected day
*/
public void setSelectedDate(Date d){
mv.setSelectedDay(d.getTime());
}
/**
* Sets the Calendar view on the given date, only the the month and year
* are being considered.
*
* @param d the date to set the calendar view on.
*/
public void setCurrentDate(Date d){
mv.setCurrentDay(d.getTime(), true);
componentChanged();
}
/**
* @inheritDoc
*/
public void paint(Graphics g) {
super.paint(g);
}
/**
* Sets the selected style of the month view component within the calendar
*
* @param s style for the month view
*/
public void setMonthViewSelectedStyle(Style s) {
mv.setSelectedStyle(s);
}
/**
* Sets the un selected style of the month view component within the calendar
*
* @param s style for the month view
*/
public void setMonthViewUnSelectedStyle(Style s) {
mv.setUnSelectedStyle(s);
}
/**
* Gets the selected style of the month view component within the calendar
*
* @return the style of the month view
*/
public Style getMonthViewSelectedStyle() {
return mv.getSelectedStyle();
}
/**
* Gets the un selected style of the month view component within the calendar
*
* @return the style of the month view
*/
public Style getMonthViewUnSelectedStyle() {
return mv.getUnselectedStyle();
}
/**
* Fires when a change is made to the month view of this component
*
* @param l listener to add
*/
public void addActionListener(ActionListener l) {
mv.addActionListener(l);
}
/**
* Fires when a change is made to the month view of this component
*
* @param l listener to remove
*/
public void removeActionListener(ActionListener l) {
mv.removeActionListener(l);
}
/**
* Allows tracking selection changes in the calendar in real time
*
* @param l listener to add
*/
public void addDataChangeListener(DataChangedListener l) {
mv.addDataChangeListener(l);
}
/**
* Allows tracking selection changes in the calendar in real time
*
* @param l listener to remove
*/
public void removeDataChangeListener(DataChangedListener l) {
mv.removeDataChangeListener(l);
}
/**
* This method creates the Day Button Component for the Month View
*
* @return a Button that corresponds to the Days Components
*/
protected Button createDay() {
Button day = new Button();
day.setAlignment(CENTER);
day.setUIID("CalendarDay");
day.setEndsWith3Points(false);
day.setTickerEnabled(false);
return day;
}
/**
* This method creates the Day title Component for the Month View
*
* @param day the relevant day values are 0-6 where 0 is sunday.
* @return a Label that corresponds to the relevant Day
*/
protected Label createDayTitle(int day) {
String value = UIManager.getInstance().localize(DAYS[day], LABELS[day]);
Label dayh = new Label(value, "CalendarTitle");
dayh.setEndsWith3Points(false);
dayh.setTickerEnabled(false);
return dayh;
}
/**
* This method creates the increment month button
*
* @return the Button that increase the Calendar months
*/
protected Button createIncrementButton() {
Button btn = new Button(">>");
btn.setUIID("CalendarNavigation");
btn.setEndsWith3Points(false);
btn.setTickerEnabled(false);
return btn;
}
/**
* This method creates the decrement month button
*
* @return the Button that decrease the Calendar months
*/
protected Button createDecrementButton() {
Button btn = new Button("<<");
btn.setUIID("CalendarNavigation");
btn.setEndsWith3Points(false);
btn.setTickerEnabled(false);
return btn;
}
class MonthView extends Container implements ActionListener{
private long currentDay;
private Button[] buttons = new Button[42];
private Style selectedStyle;
private Button selected;
private long selectedDay = -1;
public MonthView(long time) {
super(new GridLayout(7, 7));
setUIID("MonthView");
selectedStyle = UIManager.getInstance().getComponentStyle("CalendarSelectedDay");
for (int iter = 0; iter < DAYS.length; iter++) {
addComponent(createDayTitle(iter));
}
for (int iter = 0; iter < buttons.length; iter++) {
buttons[iter] = createDay();
addComponent(buttons[iter]);
if (iter <= 7) {
buttons[iter].setNextFocusUp(year);
}
buttons[iter].addActionListener(this);
}
setCurrentDay(time);
}
public void setCurrentDay(long day){
setCurrentDay(day, false);
}
private void setCurrentDay(long day, boolean force) {
repaint();
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(new Date(currentDay));
cal.set(java.util.Calendar.HOUR, 1);
cal.set(java.util.Calendar.HOUR_OF_DAY, 1);
cal.set(java.util.Calendar.MINUTE, 0);
cal.set(java.util.Calendar.SECOND, 0);
cal.set(java.util.Calendar.MILLISECOND, 0);
int yearOld = cal.get(java.util.Calendar.YEAR);
int monthOld = cal.get(java.util.Calendar.MONTH);
int dayOld = cal.get(java.util.Calendar.DAY_OF_MONTH);
cal.setTime(new Date(day));
cal.set(java.util.Calendar.HOUR, 1);
cal.set(java.util.Calendar.HOUR_OF_DAY, 1);
cal.set(java.util.Calendar.MINUTE, 0);
cal.set(java.util.Calendar.SECOND, 0);
cal.set(java.util.Calendar.MILLISECOND, 0);
int yearNew = cal.get(java.util.Calendar.YEAR);
int monthNew = cal.get(java.util.Calendar.MONTH);
int dayNew = cal.get(java.util.Calendar.DAY_OF_MONTH);
year.setSelectedItem("" + yearNew);
month.setSelectedIndex(monthNew);
if (yearNew != yearOld || monthNew != monthOld || dayNew != dayOld || force) {
currentDay = cal.getTime().getTime();
if(selectedDay == -1){
selectedDay = currentDay;
}
int month = cal.get(java.util.Calendar.MONTH);
cal.set(java.util.Calendar.DAY_OF_MONTH, 1);
long startDate = cal.getTime().getTime();
int dow = cal.get(java.util.Calendar.DAY_OF_WEEK);
cal.setTime(new Date(cal.getTime().getTime() - DAY));
cal.set(java.util.Calendar.HOUR, 1);
cal.set(java.util.Calendar.HOUR_OF_DAY, 1);
cal.set(java.util.Calendar.MINUTE, 0);
cal.set(java.util.Calendar.SECOND, 0);
cal.set(java.util.Calendar.MILLISECOND, 0);
int lastDay = cal.get(java.util.Calendar.DAY_OF_MONTH);
int i = 0;
Style unselected = createDay().getUnselectedStyle();
if(dow > java.util.Calendar.SUNDAY){
//last day of previous month
while (dow > java.util.Calendar.SUNDAY) {
cal.setTime(new Date(cal.getTime().getTime() - DAY));
dow = cal.get(java.util.Calendar.DAY_OF_WEEK);
}
int previousMonthSunday = cal.get(java.util.Calendar.DAY_OF_MONTH);
for (; i <= lastDay - previousMonthSunday; i++) {
buttons[i].setUnselectedStyle(new Style(unselected));
buttons[i].setEnabled(false);
buttons[i].setText("" + (previousMonthSunday + i));
}
}
//last day of current month
cal.set(java.util.Calendar.MONTH, (month + 1) % 12);
cal.set(java.util.Calendar.DAY_OF_MONTH, 1);
cal.setTime(new Date(cal.getTime().getTime() - DAY));
lastDay = cal.get(java.util.Calendar.DAY_OF_MONTH);
int j = i;
for (; j < buttons.length && (j - i + 1) <= lastDay; j++) {
buttons[j].setEnabled(true);
buttons[j].setText("" + (j - i + 1));
dates[j] = startDate;
if(dates[j] == selectedDay){
buttons[j].setUnselectedStyle(new Style(selectedStyle));
selected = buttons[j];
}else{
buttons[j].setUnselectedStyle(new Style(unselected));
}
startDate += DAY;
}
int d = 1;
for (; j < buttons.length; j++) {
buttons[j].setUnselectedStyle(new Style(unselected));
buttons[j].setEnabled(false);
buttons[j].setText("" + d++);
}
}
}
public int getDayOfMonth() {
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(new Date(currentDay));
return cal.get(java.util.Calendar.DAY_OF_MONTH);
}
public int getMonth() {
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(new Date(currentDay));
return cal.get(java.util.Calendar.MONTH);
}
public void incrementMonth() {
int month = getMonth();
month++;
int year = getYear();
if (month > java.util.Calendar.DECEMBER) {
month = java.util.Calendar.JANUARY;
year++;
}
setMonth(year, month);
}
private long getSelectedDay() {
return selectedDay;
}
public void setSelectedDay(long selectedDay){
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(new Date(selectedDay));
cal.set(java.util.Calendar.HOUR, 1);
cal.set(java.util.Calendar.HOUR_OF_DAY, 1);
cal.set(java.util.Calendar.MINUTE, 0);
cal.set(java.util.Calendar.SECOND, 0);
cal.set(java.util.Calendar.MILLISECOND, 0);
this.selectedDay = cal.getTime().getTime();
}
private void setMonth(int year, int month) {
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTimeZone(TimeZone.getDefault());
cal.set(java.util.Calendar.MONTH, month);
cal.set(java.util.Calendar.DAY_OF_MONTH, 1);
cal.set(java.util.Calendar.YEAR, year);
Date date = cal.getTime();
long d = date.getTime();
// if this is past the last day of the month (e.g. going from January 31st
// to Febuary) we need to decrement the day until the month is correct
while (cal.get(java.util.Calendar.MONTH) != month) {
d -= DAY;
cal.setTime(new Date(d));
}
setCurrentDay(d);
}
public void decrementMonth() {
int month = getMonth();
month--;
int year = getYear();
if (month < java.util.Calendar.JANUARY) {
month = java.util.Calendar.DECEMBER;
year--;
}
setMonth(year, month);
}
public int getYear() {
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(new Date(currentDay));
return cal.get(java.util.Calendar.YEAR);
}
public void addActionListener(ActionListener l) {
dispatcher.addListener(l);
}
public void removeActionListener(ActionListener l) {
dispatcher.removeListener(l);
}
/**
* Allows tracking selection changes in the calendar in real time
*
* @param l listener to add
*/
public void addDataChangeListener(DataChangedListener l) {
dataChangeListeners.addListener(l);
}
/**
* Allows tracking selection changes in the calendar in real time
*
* @param l listener to remove
*/
public void removeDataChangeListener(DataChangedListener l) {
dataChangeListeners.removeListener(l);
}
protected void fireActionEvent() {
componentChanged();
super.fireActionEvent();
dispatcher.fireActionEvent(new ActionEvent(Calendar.this));
}
public void actionPerformed(ActionEvent evt) {
Object src = evt.getSource();
if(src instanceof ComboBox){
setMonth(Integer.parseInt((String)year.getSelectedItem()),
month.getSelectedIndex());
componentChanged();
return;
}
for (int iter = 0; iter < buttons.length; iter++) {
if (src == buttons[iter]) {
selected.setUnselectedStyle(new Style(buttons[iter].getUnselectedStyle()));
buttons[iter].setUnselectedStyle(new Style(selectedStyle));
selectedDay = dates[iter];
selected = buttons[iter];
fireActionEvent();
if (!getComponentForm().isSingleFocusMode()) {
setHandlesInput(false);
}
return;
}
}
}
}
}