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(function ($, rf) {

    rf.calendarUtils = rf.calendarUtils || {};

    var getDefaultMonthNames = function(shortNames) {
        return (shortNames
            ? ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']
            : ['January','February','March','April','May','June','July','August','September','October','November','December']);
    };

    $.extend(rf.calendarUtils, {
            // TODO: rewrite this function or use the same function if exists
            /*clonePosition: function (elements, source)
             {
             if (!elements.length) elements = [elements];
             var offset = Position.cumulativeOffset(source);
             offset = {left:offset[0], top:offset[1]};
             var offsetTemp;
             if (source.style.position!='absolute')
             {
             offsetTemp = Position.realOffset(source);
             offset.left -= offsetTemp.left;
             offset.top -= offsetTemp.top;
             offsetTemp = Richfaces.Calendar.getWindowScrollOffset();
             offset.left += offsetTemp.left;
             offset.top += offsetTemp.top;
             }

             for (var i=0;i<elements.length;i++)
             {
             offsetTemp = Richfaces.Calendar.getParentOffset(elements[i]);
             elements[i].style.left = (offset.left - offsetTemp.left) + 'px';
             elements[i].style.top = (offset.top - offsetTemp.top) + 'px';
             }
             return offset;
             }*/

            //TODO: not used
            /*Object.extend(Event, {
             findElementByAttr : function(event, tagName, attribute, value, flag) {
             var element = Event.findElement(event, tagName);
             while (!element[attribute] || (flag ? element[attribute].indexOf(value)!=0 : element[attribute]!=value) )
             {
             element = element.parentNode;
             }
             return element;
             }
             });

             Object.extend(Element, {
             replaceClassName : function (element, whichClassName, toClassName) {
             if (!(element = $(element))) return;
             var e = Element.classNames(element);
             e.remove(whichClassName);
             e.add(toClassName);
             return element;
             }
             });*/

            // TODO: move joinArray to richfaces utils
            joinArray: function(array, begin, end, separator) {
                var value = '';
                if (array.length != 0) value = begin + array.pop() + end;
                while (array.length)
                    value = begin + array.pop() + end + separator + value;
                return value;
            },

            getMonthByLabel: function (monthLabel, monthNames) {
                var toLowerMonthLabel = monthLabel.toLowerCase();
                var i = 0;
                while (i < monthNames.length) {
                    if (monthNames[i].toLowerCase() == toLowerMonthLabel) {
                        return i;
                    }

                    i++;
                }
            },

            createDate: function (yy, mm, dd, h, m, s) {
                h = h || 0;
                m = m || 0;
                s = s || 0;
                var date = new Date(yy, mm, dd, h, m, s);
                if (date.getDate() != dd) {
                    date = new Date(yy, mm);
                    date.setHours(h);
                    date.setMinutes(m);
                    date.setSeconds(s);
                    date.setUTCDate(dd);
                }
                return date;
            },

            /* Year:
             *	y,yy - 00-99
             *	yyy+ - 1999
             * Month:
             *	M - 1-12
             *	MM - 01-12
             *	MMM - short (Jul)
             *	MMMM+ - long (July)
             * Date:
             *	d - 1-31
             *	dd+ - 01-31 */
            parseDate: function(dateString, pattern, monthNames, monthNamesShort) {
                var re = /([.*+?^<>=!:${}()\[\]\/\\])/g;
                var monthNamesStr
                var monthNamesShortStr;
                if (!monthNames) {
                    monthNames = getDefaultMonthNames();
                    monthNamesStr = monthNames.join('|');
                } else {
                    monthNamesStr = monthNames.join('|').replace(re, '\\$1');
                }

                if (!monthNamesShort) {
                    monthNamesShort = getDefaultMonthNames(true);
                    monthNamesShortStr = monthNamesShort.join('|');
                } else {
                    monthNamesShortStr = monthNamesShort.join('|').replace(re, '\\$1');
                }

                var counter = 1;
                var y,m,d;
                var a,h,min,s;
                var shortLabel = false;

                pattern = pattern.replace(/([.*+?^<>=!:${}()|\[\]\/\\])/g, '\\$1');
                pattern = pattern.replace(/(y+|M+|d+|a|H{1,2}|h{1,2}|m{2}|s{2})/g,
                    function($1) {
                        switch ($1) {
                            case 'y'  :
                            case 'yy' :
                                y = counter;
                                counter++;
                                return '(\\d{2})';
                            case 'MM' :
                                m = counter;
                                counter++;
                                return '(\\d{2})';
                            case 'M'  :
                                m = counter;
                                counter++;
                                return '(\\d{1,2})';
                            case 'd'  :
                                d = counter;
                                counter++;
                                return '(\\d{1,2})';
                            case 'MMM':
                                m = counter;
                                counter++;
                                shortLabel = true;
                                return '(' + monthNamesShortStr + ')';
                            case 'a'  :
                                a = counter;
                                counter++;
                                return '(AM|am|PM|pm)?';
                            case 'HH' :
                            case 'hh' :
                                h = counter;
                                counter++;
                                return '(\\d{2})?';
                            case 'H'  :
                            case 'h'  :
                                h = counter;
                                counter++;
                                return '(\\d{1,2})?';
                            case 'mm' :
                                min = counter;
                                counter++;
                                return '(\\d{2})?';
                            case 'ss' :
                                s = counter;
                                counter++;
                                return '(\\d{2})?';

                        }
                        // y+,M+,d+
                        var ch = $1.charAt(0);
                        if (ch == 'y') {
                            y = counter;
                            counter++;
                            return '(\\d{3,4})'
                        }
                        ;
                        if (ch == 'M') {
                            m = counter;
                            counter++;
                            return '(' + monthNamesStr + ')'
                        }
                        ;
                        if (ch == 'd') {
                            d = counter;
                            counter++;
                            return '(\\d{2})'
                        }
                        ;
                    }
                );

                var re = new RegExp(pattern, 'i');
                var match = dateString.match(re);
                if (match != null && y != undefined && m != undefined && d != undefined) {
                    // set default century start
                    var correctYear = false;
                    var defaultCenturyStart = new Date();
                    defaultCenturyStart.setFullYear(defaultCenturyStart.getFullYear() - 80);

                    var yy = parseInt(match[y], 10);
                    if (isNaN(yy)) return null;
                    else if (yy < 100) {
                        // calculate full year if year has only two digits
                        var defaultCenturyStartYear = defaultCenturyStart.getFullYear();
                        var ambiguousTwoDigitYear = defaultCenturyStartYear % 100;
                        correctYear = yy == ambiguousTwoDigitYear;
                        yy += Math.floor(defaultCenturyStartYear / 100) * 100 + (yy < ambiguousTwoDigitYear ? 100 : 0);
                    }

                    var mm = parseInt(match[m], 10);
                    if (isNaN(mm)) mm = this.getMonthByLabel(match[m], shortLabel ? monthNamesShort : monthNames); else if (--mm < 0 || mm > 11) return null;
                    var addDay = correctYear ? 1 : 0;
                    var dd = parseInt(match[d], 10);
                    if (isNaN(dd) || dd < 1 || dd > this.daysInMonth(yy, mm) + addDay) return null;

                    var date;

                    // time parsing
                    if (min != undefined && h != undefined) {
                        var hh,mmin,aa;
                        mmin = parseInt(match[min], 10);
                        if (isNaN(mmin) || mmin < 0 || mmin > 59) return null;
                        hh = parseInt(match[h], 10);
                        if (isNaN(hh)) return null;
                        if (a != undefined) {
                            aa = match[a];
                            if (!aa) return null;
                            aa = aa.toLowerCase();
                            if ((aa != 'am' && aa != 'pm') || hh < 1 || hh > 12) return null;
                            if (aa == 'pm') {
                                if (hh != 12) hh += 12;
                            } else if (hh == 12) hh = 0;
                        }
                        else if (hh < 0 || hh > 23) return null;

                        date = this.createDate(yy, mm, dd, hh, mmin);
                        if (s != undefined) {
                            sec = parseInt(match[s], 10);
                            if (isNaN(sec) || sec < 0 || sec > 59) return null;
                            date.setSeconds(sec);
                        }
                    } else {
                        date = this.createDate(yy, mm, dd);
                    }

                    if (correctYear) {
                        if (date.getTime() < defaultCenturyStart.getTime()) {
                            date.setFullYear(yy + 100);
                        }
                        if (date.getMonth() != mm) return null;
                    }

                    return date;
                }
                return null;
            },

            formatDate: function(date, pattern, monthNames, monthNamesShort) {
                if (!monthNames) monthNames = getDefaultMonthNames();
                if (!monthNamesShort) monthNamesShort = getDefaultMonthNames(true);
                var mm,dd,hh,min,sec;
                var result = pattern.replace(/(\\\\|\\[yMdaHhms])|(y+|M+|d+|a|H{1,2}|h{1,2}|m{2}|s{2})/g,
                    function($1, $2, $3) {
                        if ($2) return $2.charAt(1);
                        switch ($3) {
                            case 'y':
                            case 'yy':
                                return date.getYear().toString().slice(-2);
                            case 'M':
                                return (date.getMonth() + 1);
                            case 'MM':
                                return ((mm = date.getMonth() + 1) < 10 ? '0' + mm : mm);
                            case 'MMM':
                                return monthNamesShort[date.getMonth()];
                            case 'd':
                                return date.getDate();
                            case 'a'  :
                                return (date.getHours() < 12 ? 'AM' : 'PM');
                            case 'HH' :
                                return ((hh = date.getHours()) < 10 ? '0' + hh : hh);
                            case 'H'  :
                                return date.getHours();
                            case 'hh' :
                                return ((hh = date.getHours()) == 0 ? '12' : (hh < 10 ? '0' + hh : (hh > 21 ? hh - 12 : (hh > 12) ? '0' + (hh - 12) : hh)));
                            case 'h'  :
                                return ((hh = date.getHours()) == 0 ? '12' : (hh > 12 ? hh - 12 : hh));
                            case 'mm' :
                                return ((min = date.getMinutes()) < 10 ? '0' + min : min);
                            case 'ss' :
                                return ((sec = date.getSeconds()) < 10 ? '0' + sec : sec);
                        }
                        // y+,M+,d+
                        var ch = $3.charAt(0);
                        if (ch == 'y') return date.getFullYear();
                        if (ch == 'M') return monthNames[date.getMonth()];
                        if (ch == 'd') return ((dd = date.getDate()) < 10 ? '0' + dd : dd);
                    }
                );
                return result;
            },

            isLeapYear: function(year) {
                return new Date(year, 1, 29).getDate() == 29;
            },

            daysInMonth: function(year, month) {
                return 32 - new Date(year, month, 32).getDate();
            },

            daysInMonthByDate: function(date) {
                return 32 - new Date(date.getFullYear(), date.getMonth(), 32).getDate();
            },

            getDay: function(date, firstWeekDay) {
                var value = date.getDay() - firstWeekDay;
                if (value < 0) value = 7 + value;
                return value;
            },

            getFirstWeek: function(year, mdifw, fdow) {
                var date = new Date(year, 0, 1);
                var firstday = this.getDay(date, fdow);

                var weeknumber = (7 - firstday < mdifw) ? 0 : 1;

                return {date:date, firstDay:firstday, weekNumber:weeknumber, mdifw:mdifw, fdow:fdow};
            },

            getLastWeekOfPrevYear: function(o) {
                var year = o.date.getFullYear() - 1;
                var days = (this.isLeapYear(year) ? 366 : 365);
                var obj = this.getFirstWeek(year, o.mdifw, o.fdow);
                days = (days - 7 + o.firstDay);
                var weeks = Math.ceil(days / 7);

                return  weeks + obj.weekNumber;
            },

            weekNumber: function(year, month, mdifw, fdow) {

                var o = this.getFirstWeek(year, mdifw, fdow);

                if (month == 0) {
                    if (o.weekNumber == 1) return 1;
                    return this.getLastWeekOfPrevYear(o);
                }
                var oneweek = 604800000;
                var d = new Date(year, month, 1);
                d.setDate(1 + o.firstDay + (this.getDay(d, fdow) == 0 ? 1 : 0));

                weeknumber = o.weekNumber + Math.floor((d.getTime() - o.date.getTime()) / oneweek);

                return weeknumber;
            }

        });

    rf.calendarTemplates = rf.calendarTemplates || {};

    $.extend(rf.calendarTemplates, (function () {

        var VARIABLE_NAME_PATTERN = /^\s*[_,A-Z,a-z][\w,_\.]*\s*$/;

        var getObjectValue = function (str, object) {
            var a = str.split(".");
            var value = object[a[0]];
            var c = 1;
            while (value && c < a.length) value = value[a[c++]];
            return (value ? value : "");
        };

        return  {
            evalMacro: function(template, object) {
                var _value_ = "";
                // variable evaluation
                if (VARIABLE_NAME_PATTERN.test(template)) {
                    if (template.indexOf('.') == -1) {
                        _value_ = object[template];
                        if (!_value_)    _value_ = window[template];
                    }
                    // object's variable evaluation
                    else {
                        _value_ = getObjectValue(template, object);
                        if (!_value_) _value_ = getObjectValue(template, window);
                    }
                    if (_value_ && typeof _value_ == 'function') _value_ = _value_(object);
                    if (!_value_) _value_ = "";
                }
                //js string evaluation
                else {
                    try {
                        if (object.eval) {
                            _value_ = object.eval(template);
                        }
                        else with (object) {
                            _value_ = eval(template);
                        }

                        if (typeof _value_ == 'function') {
                            _value_ = _value_(object);
                        }
                    } catch (e) {
                        LOG.warn("Exception: " + e.Message + "\n[" + template + "]");
                    }
                }
                return _value_;
            }
        };
    })());

})(jQuery, RichFaces);
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