source: [view]
dojo.provide("dojox.date.buddhist");
dojo.experimental("dojox.date.buddhist");
dojo.require("dojox.date.buddhist.Date");
dojo.require("dojo.date"); // for compare
// Utility methods to do arithmetic calculations with buddhist.Dates
dojox.date.buddhist.getDaysInMonth = function(/*buddhist.Date*/dateObject){
return dojo.date.getDaysInMonth(dateObject.toGregorian());
};
dojox.date.buddhist.isLeapYear = function(/*buddhist.Date*/dateObject){
return dojo.date.isLeapYear(dateObject.toGregorian());
};
//FIXME: reduce compare, add, diff also
dojox.date.buddhist.compare = function(/*buddhist.Date*/date1, /*buddhist.Date*/date2, /*String?*/portion){
// summary:
// Compare two buddhist date objects by date, time, or both.
return dojo.date.compare(date1,date2, portion); //FIXME
};
dojox.date.buddhist.add = function(/*dojox.date.buddhist.Date*/date, /*String*/interval, /*int*/amount){
// based on and similar to dojo.date.add
// summary:
// Add to a Date in intervals of different size, from milliseconds to years
// date: buddhist.Date
// Date object to start with
// interval:
// A string representing the interval. One of the following:
// "year", "month", "day", "hour", "minute", "second",
// "millisecond", "week", "weekday"
// amount:
// How much to add to the date.
var newBuddDate = new dojox.date.buddhist.Date(date);
switch(interval){
case "day":
newBuddDate.setDate(date.getDate(true) + amount);
break;
case "weekday":
var days, weeks;
var mod = amount % 5;
if(!mod){
days = (amount > 0) ? 5 : -5;
weeks = (amount > 0) ? ((amount-5)/5) : ((amount+5)/5);
}else{
days = mod;
weeks = parseInt(amount/5);
}
// Get weekday value for orig date param
var strt = date.getDay();
// Orig date is Sat / positive incrementer
// Jump over Sun
var adj = 0;
if(strt == 6 && amount > 0){
adj = 1;
}else if(strt == 0 && amount < 0){
// Orig date is Sun / negative incrementer
// Jump back over Sat
adj = -1;
}
// Get weekday val for the new date
var trgt = strt + days;
// New date is on Sat or Sun
if(trgt == 0 || trgt == 6){
adj = (amount > 0) ? 2 : -2;
}
// Increment by number of weeks plus leftover days plus
// weekend adjustments
amount = (7 * weeks) + days + adj;
newBuddDate.setDate(date.getDate(true) + amount);
break;
case "year":
newBuddDate.setFullYear(date.getFullYear() + amount );
break;
case "week":
amount *= 7;
newBuddDate.setDate(date.getDate(true) + amount);
break;
case "month":
newBuddDate.setMonth(date.getMonth() + amount);
break;
case "hour":
newBuddDate.setHours(date.getHours() + amount );
break;
case "minute":
newBuddDate.setMinutes(date.getMinutes() + amount );
break;
case "second":
newBuddDate.setSeconds(date.getSeconds() + amount );
break;
case "millisecond":
newBuddDate.setMilliseconds(date.getMilliseconds() + amount );
break;
}
return newBuddDate; // dojox.date.buddhist.Date
};
dojox.date.buddhist.difference = function(/*dojox.date.buddhist.Date*/date1, /*dojox.date.buddhist.Date?*/date2, /*String?*/interval){
// based on and similar to dojo.date.difference
// summary:
// date1 - date2
// date2 is hebrew.Date object. If not specified, the current hebrew.Date is used.
// interval:
// A string representing the interval. One of the following:
// "year", "month", "day", "hour", "minute", "second",
// "millisecond", "week", "weekday"
// Defaults to "day".
date2 = date2 || new dojox.date.buddhist.Date();
interval = interval || "day";
var yearDiff = date1.getFullYear() - date2.getFullYear();
var delta = 1; // Integer return value
switch(interval){
case "weekday":
var days = Math.round(dojox.date.buddhist.difference(date1, date2, "day"));
var weeks = parseInt(dojox.date.buddhist.difference(date1, date2, "week"));
var mod = days % 7;
// Even number of weeks
if(mod == 0){
days = weeks*5;
}else{
// Weeks plus spare change (< 7 days)
var adj = 0;
var aDay = date2.getDay();
var bDay = date1.getDay();
weeks = parseInt(days/7);
mod = days % 7;
// Mark the date advanced by the number of
// round weeks (may be zero)
var dtMark = new dojox.date.buddhist.Date(date1);
dtMark.setDate(dtMark.getDate(true)+(weeks*7));
var dayMark = dtMark.getDay();
// Spare change days -- 6 or less
if(days > 0){
switch(true){
// Range starts on Fri
case aDay == 5:
adj = -1;
break;
// Range starts on Sat
case aDay == 6:
adj = 0;
break;
// Range ends on Fri
case bDay == 5:
adj = -1;
break;
// Range ends on Sat
case bDay == 6:
adj = -2;
break;
// Range contains weekend
case (dayMark + mod) > 5:
adj = -2;
}
}else if(days < 0){
switch(true){
// Range starts on Fri
case aDay == 5:
adj = 0;
break;
// Range starts on Sat
case aDay == 6:
adj = 1;
break;
// Range ends on Fri
case bDay == 5:
adj = 2;
break;
// Range ends on Sat
case bDay == 6:
adj = 1;
break;
// Range contains weekend
case (dayMark + mod) < 0:
adj = 2;
}
}
days += adj;
days -= (weeks*2);
}
delta = days;
break;
case "year":
delta = yearDiff;
break;
case "month":
var startdate = (date1.toGregorian() > date2.toGregorian()) ? date1 : date2; // more
var enddate = (date1.toGregorian() > date2.toGregorian()) ? date2 : date1;
var month1 = startdate.getMonth();
var month2 = enddate.getMonth();
if (yearDiff == 0){
delta = startdate.getMonth() - enddate.getMonth() ;
}else{
delta = 12-month2;
delta += month1;
var i = enddate.getFullYear()+1;
var e = startdate.getFullYear();
for (i; i < e; i++){
delta += 12;
}
}
if (date1.toGregorian() < date2.toGregorian()){
delta = -delta;
}
break;
case "week":
// Truncate instead of rounding
// Don't use Math.floor -- value may be negative
delta = parseInt(dojox.date.buddhist.difference(date1, date2, "day")/7);
break;
case "day":
delta /= 24;
// fallthrough
case "hour":
delta /= 60;
// fallthrough
case "minute":
delta /= 60;
// fallthrough
case "second":
delta /= 1000;
// fallthrough
case "millisecond":
delta *= date1.toGregorian().getTime()- date2.toGregorian().getTime();
}
// Round for fractional values and DST leaps
return Math.round(delta); // Number (integer)