calendar.js

这是一个关于java的JSP页面中使用象Swing组件的一个库文件.

function uiUtil_Calendar(optJsDate) {
  this._super();
  this.__updateListeners = new Array();
  this.__date = (optJsDate == null) ? new Date() : new Date(optJsDate);
}
uiUtil_Calendar = uiUtil_Object.declareClass(uiUtil_Calendar, uiUtil_Object);
uiUtil_Calendar.NUM_DAYS_IN_A_WEEK = 7;
uiUtil_Calendar.NUM_MONTHS_IN_A_YEAR = 12;
uiUtil_Calendar.INDEX_SUNDAY = 0;
uiUtil_Calendar.INDEX_MONDAY = 1;
uiUtil_Calendar.INDEX_TUESDAY = 2;
uiUtil_Calendar.INDEX_WEDNESDAY = 3;
uiUtil_Calendar.INDEX_THURSDAY = 4;
uiUtil_Calendar.INDEX_FRIDAY = 5;
uiUtil_Calendar.INDEX_SATURDAY = 6;
uiUtil_Calendar.INDEX_JANUARY = 0;
uiUtil_Calendar.INDEX_FEBRUARY = 1;
uiUtil_Calendar.INDEX_MARCH = 2;
uiUtil_Calendar.INDEX_APRIL = 3;
uiUtil_Calendar.INDEX_MAY = 4;
uiUtil_Calendar.INDEX_JUNE = 5;
uiUtil_Calendar.INDEX_JULY = 6;
uiUtil_Calendar.INDEX_AUGUST = 7;
uiUtil_Calendar.INDEX_SEPTEMBER = 8;
uiUtil_Calendar.INDEX_OCTOBER = 9;
uiUtil_Calendar.INDEX_NOVEMBER = 10;
uiUtil_Calendar.INDEX_DECEMBER = 11;
uiUtil_Calendar.CODE_YEAR = "y";
uiUtil_Calendar.CODE_MONTH = "M";
uiUtil_Calendar.CODE_DAY = "d";
uiUtil_Calendar.__SPECIAL_CHARS =
    uiUtil_Calendar.CODE_YEAR +
    uiUtil_Calendar.CODE_MONTH +
    uiUtil_Calendar.CODE_DAY;
uiUtil_Calendar.prototype.addUpdateListener = function(listener) {
  this.__updateListeners.push(listener);
};
uiUtil_Calendar.prototype.toDate = function() {
  return new Date(this.__date);
};
uiUtil_Calendar.prototype.fromDate = function(jsDate) {
  this.__date = new Date(jsDate);
  this.__notifyListeners();
};
uiUtil_Calendar.prototype.update = function(newYear, newMonth, newDay) {
  this.__date.setDate(1);
  this.__date.setYear(newYear);
  this.__date.setMonth(newMonth);
  this.__date.setDate(newDay);
  this.__notifyListeners();
  return this;
};
uiUtil_Calendar.prototype.setDay = function(newDay) {
  this.__date.setDate(newDay);
  this.__notifyListeners();
  return this;
};
uiUtil_Calendar.prototype.setMonth = function(newMonth) {
  this.__date.setMonth(newMonth);
  this.__notifyListeners();
  return this;
};
uiUtil_Calendar.prototype.setYear = function(newYear) {
  this.__date.setYear(newYear);
  this.__notifyListeners();
  return this;
};
uiUtil_Calendar.prototype.incrementDay = function() {
  return this.setDay(this.getDay() + 1);
};
uiUtil_Calendar.prototype.decrementDay = function() {
  return this.setDay(this.getDay() - 1);
};
uiUtil_Calendar.prototype.incrementMonth = function() {
  return this.setMonth(this.getMonth() + 1);
};
uiUtil_Calendar.prototype.decrementMonth = function() {
  return this.setMonth(this.getMonth() - 1);
};
uiUtil_Calendar.prototype.incrementYear = function() {
  return this.setYear(this.getYear() + 1);
};
uiUtil_Calendar.prototype.decrementYear = function() {
  return this.setYear(this.getYear() - 1);
};
uiUtil_Calendar.prototype.__notifyListeners = function() {
  for (var i = 0; i < this.__updateListeners.length; ++i) {
    this.__updateListeners[i].dateUpdated(this);
  }
};
uiUtil_Calendar.prototype.getDay = function() {
  return this.__date.getDate();
};
uiUtil_Calendar.prototype.getMonth = function() {
  return this.__date.getMonth();
};
uiUtil_Calendar.prototype.getYear = function() {
  return this.__date.getFullYear();
};
uiUtil_Calendar.prototype.getFirstDayInMonth = function() {
  var firstInMonth = new Date(this.__date);
  firstInMonth.setDate(1);
  return firstInMonth.getDay();
};
uiUtil_Calendar.prototype.getNumDaysInMonth = function() {
  var numDays = new Array(12);
  numDays[0]  = 31;
  numDays[1]  = this.__isLeapYear()? 29 : 28;
  numDays[2]  = 31;
  numDays[3]  = 30;
  numDays[4]  = 31;
  numDays[5]  = 30;
  numDays[6]  = 31;
  numDays[7]  = 31;
  numDays[8]  = 30;
  numDays[9]  = 31;
  numDays[10] = 30;
  numDays[11] = 31;
  return numDays[this.__date.getMonth()];
};
uiUtil_Calendar.prototype.__isLeapYear = function() {
  var year = this.__date.getFullYear();
  if ((year % 4 == 0 && year % 100 != 0) ||
      year % 400 == 0) {
    return true;
  }
  return false;
};
uiUtil_Calendar.prototype.format = function(format) {
  var specialChars = uiUtil_Calendar.__SPECIAL_CHARS;
  var newString = format;
  for (var i = 0; i < specialChars.length; ++i) {
    var regex = new RegExp("(" + specialChars.charAt(i) + "+)");
    if (regex.test(format)) {
      var specialCode = RegExp.$1;
      var codeHandler = uiUtil_Calendar.__formats[specialCode];
      if (codeHandler != null) {
        newString = newString.replace(
            specialCode, codeHandler.call(this));
      }
    }
  }
  return newString;
};
uiUtil_Calendar.__formats = new Array();
uiUtil_Calendar.__formats["yyyy"] = function() {
  return this.getYear();
};
uiUtil_Calendar.__formats["yy"] = function() {
  var yearString = new String(this.getYear());
  return yearString.substring(2);
};
uiUtil_Calendar.__formats["MM"] = function() {
  var month = this.getMonth() + 1;
  return (month < 10) ? "0" + month : month;
};
uiUtil_Calendar.__formats["dd"] = function() {
  var day = this.getDay();
  return (day < 10) ? "0" + day : day;
};
uiUtil_Calendar.createFromString = function(string, format) {
  var regex = new uiUtil_Calendar.DateRegExp(format);
  if (regex.__test(string)) {
    var year = regex.__getYear();
    var month = regex.__getMonth();
    var day = regex.__getDay();
    var calendar = new uiUtil_Calendar(new Date(year, month, day));
    if (calendar.getDay() != day ||
        calendar.getMonth() != month ||
        calendar.getYear() != year) {
      throw new uiUtil_CreateException("Invalid date value '" + string +
          "'. " + year + "-" + month + "-" + day + " converted to: " +
          calendar.getYear() + "-" + calendar.getMonth() + "-" + calendar.getDay());
    }
    return calendar;
  }
  throw new uiUtil_CreateException("Invalid date '" + string +
      "' according to the format: " + format);
};
function uiUtil_Calendar$UpdateListener() {
  this._super();
}
uiUtil_Calendar.UpdateListener =
    uiUtil_Object.declareClass(uiUtil_Calendar$UpdateListener, uiUtil_Object);
uiUtil_Calendar.UpdateListener.prototype.dateUpdated = function(date) {
  alert("Date updated " + date.format("dd/MM/yyyy"));
};
function uiUtil_Calendar$DateRegExp(format) {
  this._super();
  this.__yearIndex = 0;
  this.__monthIndex = 0;
  this.__dayIndex = 0;
  this.__currentIndex = 1;
  this.__results = null;
  this.__regex = new RegExp(this.__getRegexPatternFrom(format));
}
uiUtil_Calendar.DateRegExp =
    uiUtil_Object.declareClass(uiUtil_Calendar$DateRegExp, uiUtil_Object);
uiUtil_Calendar.DateRegExp.prototype.__getRegexPatternFrom = function(format) {
  var pattern = "";
  var currentChar = "";
  var currentCount;
  for (var i = 0; i < format.length; ++i) {
    if (format.charAt(i) == currentChar) {
      ++currentCount;
    }
    else {
      if (currentChar != "") {
        pattern += this.__generateDigitPattern(currentCount);
      }
      if (this.__isSpecialChar(format.charAt(i))) {
        currentChar = format.charAt(i);
        currentCount = 1;
      }
      else {
        pattern += format.charAt(i);
        currentChar = "";
      }
    }
  }
  if (currentChar != "") {  
    pattern += this.__generateDigitPattern(currentCount);
  }
  return pattern;
};
uiUtil_Calendar.DateRegExp.prototype.__generateDigitPattern = function(count) {
  return "(\\d{" + count + "})";
};
uiUtil_Calendar.DateRegExp.prototype.__isSpecialChar = function(currentChar) {
  switch (currentChar) {
    case uiUtil_Calendar.CODE_YEAR :
        this.__yearIndex = this.__currentIndex;
        ++this.__currentIndex;
        return true;
    case uiUtil_Calendar.CODE_MONTH :
        this.__monthIndex = this.__currentIndex;
        ++this.__currentIndex;
        return true;
    case uiUtil_Calendar.CODE_DAY :
        this.__dayIndex = this.__currentIndex;
        ++this.__currentIndex;
        return true;
  }
  return false;
};
uiUtil_Calendar.DateRegExp.prototype.__test = function(string) {
  this.__results = this.__regex.exec(string);
  return this.__results != null;
};
uiUtil_Calendar.DateRegExp.prototype.__getDay = function() {
  return this.__results[this.__dayIndex];
};
uiUtil_Calendar.DateRegExp.prototype.__getMonth = function() {
  return this.__results[this.__monthIndex] - 1;
};
uiUtil_Calendar.DateRegExp.prototype.__getYear = function() {
  return this.__results[this.__yearIndex];
};