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- /*
- @VaadinApache2LicenseForJavaFiles@
- */
-
- package com.vaadin.terminal.gwt.client;
-
- import java.util.Date;
-
- import com.google.gwt.i18n.client.DateTimeFormat;
- import com.google.gwt.i18n.client.LocaleInfo;
- import com.vaadin.terminal.gwt.client.ui.datefield.VDateField;
-
- /**
- * This class provides date/time parsing services to all components on the
- * client side.
- *
- * @author Vaadin Ltd.
- *
- */
- @SuppressWarnings("deprecation")
- public class DateTimeService {
-
- private String currentLocale;
-
- private static int[] maxDaysInMonth = { 31, 28, 31, 30, 31, 30, 31, 31, 30,
- 31, 30, 31 };
-
- /**
- * Creates a new date time service with the application default locale.
- */
- public DateTimeService() {
- currentLocale = LocaleService.getDefaultLocale();
- }
-
- /**
- * Creates a new date time service with a given locale.
- *
- * @param locale
- * e.g. fi, en etc.
- * @throws LocaleNotLoadedException
- */
- public DateTimeService(String locale) throws LocaleNotLoadedException {
- setLocale(locale);
- }
-
- public void setLocale(String locale) throws LocaleNotLoadedException {
- if (LocaleService.getAvailableLocales().contains(locale)) {
- currentLocale = locale;
- } else {
- throw new LocaleNotLoadedException(locale);
- }
- }
-
- public String getLocale() {
- return currentLocale;
- }
-
- public String getMonth(int month) {
- try {
- return LocaleService.getMonthNames(currentLocale)[month];
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return null;
- }
- }
-
- public String getShortMonth(int month) {
- try {
- return LocaleService.getShortMonthNames(currentLocale)[month];
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return null;
- }
- }
-
- public String getDay(int day) {
- try {
- return LocaleService.getDayNames(currentLocale)[day];
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return null;
- }
- }
-
- public String getShortDay(int day) {
- try {
- return LocaleService.getShortDayNames(currentLocale)[day];
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return null;
- }
- }
-
- public int getFirstDayOfWeek() {
- try {
- return LocaleService.getFirstDayOfWeek(currentLocale);
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return 0;
- }
- }
-
- public boolean isTwelveHourClock() {
- try {
- return LocaleService.isTwelveHourClock(currentLocale);
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return false;
- }
- }
-
- public String getClockDelimeter() {
- try {
- return LocaleService.getClockDelimiter(currentLocale);
- } catch (final LocaleNotLoadedException e) {
- VConsole.error(e);
- return ":";
- }
- }
-
- private static final String[] DEFAULT_AMPM_STRINGS = { "AM", "PM" };
-
- public String[] getAmPmStrings() {
- try {
- return LocaleService.getAmPmStrings(currentLocale);
- } catch (final LocaleNotLoadedException e) {
- // TODO can this practically even happen? Should die instead?
- VConsole.error("Locale not loaded, using fallback : AM/PM");
- VConsole.error(e);
- return DEFAULT_AMPM_STRINGS;
- }
- }
-
- public int getStartWeekDay(Date date) {
- final Date dateForFirstOfThisMonth = new Date(date.getYear(),
- date.getMonth(), 1);
- int firstDay;
- try {
- firstDay = LocaleService.getFirstDayOfWeek(currentLocale);
- } catch (final LocaleNotLoadedException e) {
- VConsole.error("Locale not loaded, using fallback 0");
- VConsole.error(e);
- firstDay = 0;
- }
- int start = dateForFirstOfThisMonth.getDay() - firstDay;
- if (start < 0) {
- start = 6;
- }
- return start;
- }
-
- public static void setMilliseconds(Date date, int ms) {
- date.setTime(date.getTime() / 1000 * 1000 + ms);
- }
-
- public static int getMilliseconds(Date date) {
- if (date == null) {
- return 0;
- }
-
- return (int) (date.getTime() - date.getTime() / 1000 * 1000);
- }
-
- public static int getNumberOfDaysInMonth(Date date) {
- final int month = date.getMonth();
- if (month == 1 && true == isLeapYear(date)) {
- return 29;
- }
- return maxDaysInMonth[month];
- }
-
- public static boolean isLeapYear(Date date) {
- // Instantiate the date for 1st March of that year
- final Date firstMarch = new Date(date.getYear(), 2, 1);
-
- // Go back 1 day
- final long firstMarchTime = firstMarch.getTime();
- final long lastDayTimeFeb = firstMarchTime - (24 * 60 * 60 * 1000); // NUM_MILLISECS_A_DAY
-
- // Instantiate new Date with this time
- final Date febLastDay = new Date(lastDayTimeFeb);
-
- // Check for date in this new instance
- return (29 == febLastDay.getDate()) ? true : false;
- }
-
- public static boolean isSameDay(Date d1, Date d2) {
- return (getDayInt(d1) == getDayInt(d2));
- }
-
- public static boolean isInRange(Date date, Date rangeStart, Date rangeEnd,
- int resolution) {
- Date s;
- Date e;
- if (rangeStart.after(rangeEnd)) {
- s = rangeEnd;
- e = rangeStart;
- } else {
- e = rangeEnd;
- s = rangeStart;
- }
- long start = s.getYear() * 10000000000l;
- long end = e.getYear() * 10000000000l;
- long target = date.getYear() * 10000000000l;
-
- if (resolution == VDateField.RESOLUTION_YEAR) {
- return (start <= target && end >= target);
- }
- start += s.getMonth() * 100000000l;
- end += e.getMonth() * 100000000l;
- target += date.getMonth() * 100000000l;
- if (resolution == VDateField.RESOLUTION_MONTH) {
- return (start <= target && end >= target);
- }
- start += s.getDate() * 1000000l;
- end += e.getDate() * 1000000l;
- target += date.getDate() * 1000000l;
- if (resolution == VDateField.RESOLUTION_DAY) {
- return (start <= target && end >= target);
- }
- start += s.getHours() * 10000l;
- end += e.getHours() * 10000l;
- target += date.getHours() * 10000l;
- if (resolution == VDateField.RESOLUTION_HOUR) {
- return (start <= target && end >= target);
- }
- start += s.getMinutes() * 100l;
- end += e.getMinutes() * 100l;
- target += date.getMinutes() * 100l;
- if (resolution == VDateField.RESOLUTION_MIN) {
- return (start <= target && end >= target);
- }
- start += s.getSeconds();
- end += e.getSeconds();
- target += date.getSeconds();
- return (start <= target && end >= target);
-
- }
-
- private static int getDayInt(Date date) {
- final int y = date.getYear();
- final int m = date.getMonth();
- final int d = date.getDate();
-
- return ((y + 1900) * 10000 + m * 100 + d) * 1000000000;
- }
-
- /**
- * Returns the ISO-8601 week number of the given date.
- *
- * @param date
- * The date for which the week number should be resolved
- * @return The ISO-8601 week number for {@literal date}
- */
- public static int getISOWeekNumber(Date date) {
- final long MILLISECONDS_PER_DAY = 24 * 3600 * 1000;
- int dayOfWeek = date.getDay(); // 0 == sunday
-
- // ISO 8601 use weeks that start on monday so we use
- // mon=1,tue=2,...sun=7;
- if (dayOfWeek == 0) {
- dayOfWeek = 7;
- }
- // Find nearest thursday (defines the week in ISO 8601). The week number
- // for the nearest thursday is the same as for the target date.
- int nearestThursdayDiff = 4 - dayOfWeek; // 4 is thursday
- Date nearestThursday = new Date(date.getTime() + nearestThursdayDiff
- * MILLISECONDS_PER_DAY);
-
- Date firstOfJanuary = new Date(nearestThursday.getYear(), 0, 1);
- long timeDiff = nearestThursday.getTime() - firstOfJanuary.getTime();
- int daysSinceFirstOfJanuary = (int) (timeDiff / MILLISECONDS_PER_DAY);
-
- int weekNumber = (daysSinceFirstOfJanuary) / 7 + 1;
-
- return weekNumber;
- }
-
- /**
- * Check if format contains the month name. If it does we manually convert
- * it to the month name since DateTimeFormat.format always uses the current
- * locale and will replace the month name wrong if current locale is
- * different from the locale set for the DateField.
- *
- * MMMM is converted into long month name, MMM is converted into short month
- * name. '' are added around the name to avoid that DateTimeFormat parses
- * the month name as a pattern.
- *
- * @param date
- * The date to convert
- * @param formatStr
- * The format string that might contain MMM or MMMM
- * @param dateTimeService
- * Reference to the Vaadin DateTimeService
- * @return
- */
- public String formatDate(Date date, String formatStr) {
- /*
- * Format month names separately when locale for the DateTimeService is
- * not the same as the browser locale
- */
- formatStr = formatMonthNames(date, formatStr);
-
- // Format uses the browser locale
- DateTimeFormat format = DateTimeFormat.getFormat(formatStr);
-
- String result = format.format(date);
-
- return result;
- }
-
- private String formatMonthNames(Date date, String formatStr) {
- if (formatStr.contains("MMMM")) {
- String monthName = getMonth(date.getMonth());
-
- if (monthName != null) {
- /*
- * Replace 4 or more M:s with the quoted month name. Also
- * concatenate generated string with any other string prepending
- * or following the MMMM pattern, i.e. 'MMMM'ta ' becomes
- * 'MONTHta ' and not 'MONTH''ta ', 'ab'MMMM becomes 'abMONTH',
- * 'x'MMMM'y' becomes 'xMONTHy'.
- */
- formatStr = formatStr.replaceAll("'([M]{4,})'", monthName);
- formatStr = formatStr.replaceAll("([M]{4,})'", "'" + monthName);
- formatStr = formatStr.replaceAll("'([M]{4,})", monthName + "'");
- formatStr = formatStr.replaceAll("[M]{4,}", "'" + monthName
- + "'");
- }
- }
-
- if (formatStr.contains("MMM")) {
-
- String monthName = getShortMonth(date.getMonth());
-
- if (monthName != null) {
- /*
- * Replace 3 or more M:s with the quoted month name. Also
- * concatenate generated string with any other string prepending
- * or following the MMM pattern, i.e. 'MMM'ta ' becomes 'MONTHta
- * ' and not 'MONTH''ta ', 'ab'MMM becomes 'abMONTH', 'x'MMM'y'
- * becomes 'xMONTHy'.
- */
- formatStr = formatStr.replaceAll("'([M]{3,})'", monthName);
- formatStr = formatStr.replaceAll("([M]{3,})'", "'" + monthName);
- formatStr = formatStr.replaceAll("'([M]{3,})", monthName + "'");
- formatStr = formatStr.replaceAll("[M]{3,}", "'" + monthName
- + "'");
- }
- }
-
- return formatStr;
- }
-
- /**
- * Replaces month names in the entered date with the name in the current
- * browser locale.
- *
- * @param enteredDate
- * Date string e.g. "5 May 2010"
- * @param formatString
- * Format string e.g. "d M yyyy"
- * @return The date string where the month names have been replaced by the
- * browser locale version
- */
- private String parseMonthName(String enteredDate, String formatString) {
- LocaleInfo browserLocale = LocaleInfo.getCurrentLocale();
- if (browserLocale.getLocaleName().equals(getLocale())) {
- // No conversion needs to be done when locales match
- return enteredDate;
- }
- String[] browserMonthNames = browserLocale.getDateTimeConstants()
- .months();
- String[] browserShortMonthNames = browserLocale.getDateTimeConstants()
- .shortMonths();
-
- if (formatString.contains("MMMM")) {
- // Full month name
- for (int i = 0; i < 12; i++) {
- enteredDate = enteredDate.replaceAll(getMonth(i),
- browserMonthNames[i]);
- }
- }
- if (formatString.contains("MMM")) {
- // Short month name
- for (int i = 0; i < 12; i++) {
- enteredDate = enteredDate.replaceAll(getShortMonth(i),
- browserShortMonthNames[i]);
- }
- }
-
- return enteredDate;
- }
-
- /**
- * Parses the given date string using the given format string and the locale
- * set in this DateTimeService instance.
- *
- * @param dateString
- * Date string e.g. "1 February 2010"
- * @param formatString
- * Format string e.g. "d MMMM yyyy"
- * @param lenient
- * true to use lenient parsing, false to use strict parsing
- * @return A Date object representing the dateString. Never returns null.
- * @throws IllegalArgumentException
- * if the parsing fails
- *
- */
- public Date parseDate(String dateString, String formatString,
- boolean lenient) throws IllegalArgumentException {
- /* DateTimeFormat uses the browser's locale */
- DateTimeFormat format = DateTimeFormat.getFormat(formatString);
-
- /*
- * Parse month names separately when locale for the DateTimeService is
- * not the same as the browser locale
- */
- dateString = parseMonthName(dateString, formatString);
-
- Date date;
-
- if (lenient) {
- date = format.parse(dateString);
- } else {
- date = format.parseStrict(dateString);
- }
-
- // Some version of Firefox sets the timestamp to 0 if parsing fails.
- if (date != null && date.getTime() == 0) {
- throw new IllegalArgumentException("Parsing of '" + dateString
- + "' failed");
- }
-
- return date;
-
- }
-
- }
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