-
Notifications
You must be signed in to change notification settings - Fork 229
/
timezone.js
720 lines (673 loc) · 22.3 KB
/
timezone.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
/******************************************************************************
* Dojo port of fleegix date plugin from
*
* http://js.fleegix.org/plugins/date/date
*
* contributed to Dojo under CLA, with thanks to Matthew Eernisse (mde@fleegix.org)
* and Open Source Applications Foundation
*
* Credits: Ideas included from incomplete JS implementation of Olson
* parser, "XMLDate" by Philippe Goetz (philippe.goetz@wanadoo.fr)
*****************************************************************************/
define(["dojo", "dojo/date", "dojo/date/locale", "dojo/_base/array", "dojo/_base/xhr"],
function(dojo, _dd, _ddl){
dojo.experimental("dojox.date.timezone");
dojo.getObject("date.timezone", true, dojox);
var cfg = dojo.config;
var _zoneFiles = [ "africa", "antarctica", "asia", "australasia", "backward",
"etcetera", "europe", "northamerica", "pacificnew",
"southamerica" ];
// Our mins an maxes for years that we care about
var _minYear = 1835,
_maxYear = 2038;
var _loadedZones = {},
_zones = {},
_loadedRanges = {},
_rules = {};
// loadingScheme: String
// One of "preloadAll", "lazyLoad" (Defaults "lazyLoad")
var loadingScheme = cfg.timezoneLoadingScheme || "preloadAll";
// defaultZoneFile: String or String[]
// The default file (or files) to load on startup - other files will
// be lazily-loaded on-demand
var defaultZoneFile = cfg.defaultZoneFile ||
((loadingScheme == "preloadAll") ? _zoneFiles : "northamerica");
// Set our olson-zoneinfo content handler
dojo._contentHandlers["olson-zoneinfo"] = function(xhr){
var str = dojo._contentHandlers["text"](xhr),
s = "",
lines = str.split("\n"),
arr = [],
chunk = "",
zone = null,
rule = null,
ret = {zones: {}, rules: {}};
for(var i = 0; i < lines.length; i++){
var l = lines[i];
if(l.match(/^\s/)){
l = "Zone " + zone + l;
}
l = l.split("#")[0];
if(l.length > 3){
arr = l.split(/\s+/);
chunk = arr.shift();
switch(chunk){
case 'Zone':
zone = arr.shift();
if(arr[0]){
// Handle extra commas in the middle of a zone
if(!ret.zones[zone]){ ret.zones[zone] = []; }
ret.zones[zone].push(arr);
}
break;
case 'Rule':
rule = arr.shift();
if(!ret.rules[rule]){ ret.rules[rule] = []; }
ret.rules[rule].push(arr);
break;
case 'Link':
// No zones for these should already exist
if(ret.zones[arr[1]]){
throw new Error('Error with Link ' + arr[1]);
}
// Create the link
ret.zones[arr[1]] = arr[0];
break;
case 'Leap':
break;
default:
// Fail silently
break;
}
}
}
return ret; // Object
};
function loadZoneData(/* Object */ data){
// summary:
// Loads the given data object into the zone database
// data: Object
// The data to load - contains "zones" and "rules" parameters
data = data || {};
_zones = dojo.mixin(_zones, data.zones||{});
_rules = dojo.mixin(_rules, data.rules||{});
}
function loadZoneFile(/* String */ fileName){
// summary:
// Loads the given URL of the Olson zone information into the
// zone database
//
// fileName: String
// The zoneinfo file name to load
// TODO: Maybe behave similar to requireLocalization - rather than
// Using dojo.xhrGet?
_loadedZones[fileName] = true;
dojo.xhrGet({
url: require.toUrl((cfg.timezoneFileBasePath || "dojox/date/zoneinfo") + "/" + fileName),
sync: true, // Needs to be synchronous so we can return values
handleAs: "olson-zoneinfo",
load: loadZoneData,
error: function(e){
console.error("Error loading zone file:", e);
throw e;
}
});
}
var monthMap = { 'jan': 0, 'feb': 1, 'mar': 2, 'apr': 3,'may': 4, 'jun': 5,
'jul': 6, 'aug': 7, 'sep': 8, 'oct': 9, 'nov': 10, 'dec': 11 },
dayMap = {'sun': 0, 'mon': 1, 'tue': 2, 'wed': 3, 'thu': 4,
'fri': 5, 'sat': 6 },
regionMap = {'EST': "northamerica", 'MST': "northamerica",
'HST': "northamerica", 'EST5EDT': "northamerica",
'CST6CDT': "northamerica", 'MST7MDT': "northamerica",
'PST8PDT': "northamerica", 'America': "northamerica",
'Pacific': "australasia", 'Atlantic': "europe",
'Africa': "africa", 'Indian': "africa",
'Antarctica': "antarctica", 'Asia': "asia",
'Australia': "australasia", 'Europe': "europe",
'WET': "europe", 'CET': "europe", 'MET': "europe",
'EET': "europe"},
regionExceptions = {'Pacific/Honolulu':"northamerica",
'Atlantic/Bermuda':"northamerica",
'Atlantic/Cape_Verde':"africa",
'Atlantic/St_Helena':"africa",
'Indian/Kerguelen':"antarctica",
'Indian/Chagos':"asia",
'Indian/Maldives':"asia",
'Indian/Christmas':"australasia",
'Indian/Cocos':"australasia",
'America/Danmarkshavn':"europe",
'America/Scoresbysund':"europe",
'America/Godthab':"europe",
'America/Thule':"europe",
'Asia/Yekaterinburg':"europe",
'Asia/Omsk':"europe",
'Asia/Novosibirsk':"europe",
'Asia/Krasnoyarsk':"europe",
'Asia/Irkutsk':"europe",
'Asia/Yakutsk':"europe",
'Asia/Vladivostok':"europe",
'Asia/Sakhalin':"europe",
'Asia/Magadan':"europe",
'Asia/Kamchatka':"europe",
'Asia/Anadyr':"europe",
'Africa/Ceuta':"europe",
'America/Argentina/Buenos_Aires':"southamerica",
'America/Argentina/Cordoba':"southamerica",
'America/Argentina/Tucuman':"southamerica",
'America/Argentina/La_Rioja':"southamerica",
'America/Argentina/San_Juan':"southamerica",
'America/Argentina/Jujuy':"southamerica",
'America/Argentina/Catamarca':"southamerica",
'America/Argentina/Mendoza':"southamerica",
'America/Argentina/Rio_Gallegos':"southamerica",
'America/Argentina/Ushuaia':"southamerica",
'America/Aruba':"southamerica",
'America/La_Paz':"southamerica",
'America/Noronha':"southamerica",
'America/Belem':"southamerica",
'America/Fortaleza':"southamerica",
'America/Recife':"southamerica",
'America/Araguaina':"southamerica",
'America/Maceio':"southamerica",
'America/Bahia':"southamerica",
'America/Sao_Paulo':"southamerica",
'America/Campo_Grande':"southamerica",
'America/Cuiaba':"southamerica",
'America/Porto_Velho':"southamerica",
'America/Boa_Vista':"southamerica",
'America/Manaus':"southamerica",
'America/Eirunepe':"southamerica",
'America/Rio_Branco':"southamerica",
'America/Santiago':"southamerica",
'Pacific/Easter':"southamerica",
'America/Bogota':"southamerica",
'America/Curacao':"southamerica",
'America/Guayaquil':"southamerica",
'Pacific/Galapagos':"southamerica",
'Atlantic/Stanley':"southamerica",
'America/Cayenne':"southamerica",
'America/Guyana':"southamerica",
'America/Asuncion':"southamerica",
'America/Lima':"southamerica",
'Atlantic/South_Georgia':"southamerica",
'America/Paramaribo':"southamerica",
'America/Port_of_Spain':"southamerica",
'America/Montevideo':"southamerica",
'America/Caracas':"southamerica"},
abbrExceptions = { 'US': "S", 'Chatham': "S", 'NZ': "S", 'NT_YK': "S",
'Edm': "S", 'Salv': "S", 'Canada': "S", 'StJohns': "S",
'TC': "S", 'Guat': "S", 'Mexico': "S", 'Haiti': "S",
'Barb': "S", 'Belize': "S", 'CR': "S", 'Moncton': "S",
'Swift': "S", 'Hond': "S", 'Thule': "S", 'NZAQ': "S",
'Zion': "S", 'ROK': "S", 'PRC': "S", 'Taiwan': "S",
'Ghana': "GMT", 'SL': "WAT", 'Chicago': "S",
'Detroit': "S", 'Vanc': "S", 'Denver': "S",
'Halifax': "S", 'Cuba': "S", 'Indianapolis': "S",
'Starke': "S", 'Marengo': "S", 'Pike': "S",
'Perry': "S", 'Vincennes': "S", 'Pulaski': "S",
'Louisville': "S", 'CA': "S", 'Nic': "S",
'Menominee': "S", 'Mont': "S", 'Bahamas': "S",
'NYC': "S", 'Regina': "S", 'Resolute': "ES",
'DR': "S", 'Toronto': "S", 'Winn': "S" };
function invalidTZError(t) {
throw new Error('Timezone "' + t +
'" is either incorrect, or not loaded in the timezone registry.');
}
function getRegionForTimezone(/* String */ tz) {
// summary:
// Returns the Olson region for the given timezone
var ret = regionExceptions[tz];
if(!ret){
var reg = tz.split('/')[0];
ret = regionMap[reg];
// If there's nothing listed in the main regions for
// this TZ, check the 'backward' links
if(!ret){
var link = _zones[tz];
if(typeof link == 'string'){
return getRegionForTimezone(link); // String
}else{
// Backward-compat file hasn't loaded yet, try looking in there
if (!_loadedZones.backward) {
// This is for obvious legacy zones (e.g., Iceland) that
// don't even have a prefix like "America/" that look like
// normal zones
loadZoneFile("backward");
return getRegionForTimezone(tz); // String
}else{
invalidTZError(tz);
}
}
}
}
return ret; // String
}
function parseTimeString(/* String */ str) {
// summary:
// Parses the given time string and returns it as an integer array
var pat = /(\d+)(?::0*(\d*))?(?::0*(\d*))?([su])?$/;
var hms = str.match(pat);
if(!hms){
return null;
}
hms[1] = parseInt(hms[1], 10);
hms[2] = hms[2] ? parseInt(hms[2], 10) : 0;
hms[3] = hms[3] ? parseInt(hms[3], 10) : 0;
return hms; // int[]
}
function getUTCStamp(/* int */ y, /* int */ m, /* int */ d, /* int */ h,
/* int */ mn, /* int */ s, /* int? */ off){
// summary:
// Returns the UTC timestamp, adjusted by the given (optional) offset
return Date.UTC(y, m, d, h, mn, s) + ((off||0) * 60 * 1000);
}
function getMonthNumber(/* String */ m){
// summary:
// Returns the javascript month number for the given string
return monthMap[m.substr(0, 3).toLowerCase()];
}
function getOffsetInMins(/* String */ str){
// summary:
// Returns the offset value represented by the string, in minutes
var off = parseTimeString(str);
if(off === null){ return 0; }
var adj = str.indexOf('-') === 0 ? -1 : 1;
off = adj * (((off[1] * 60 + off[2]) *60 + off[3]) * 1000);
return -off/60/1000;
}
function _getRuleStart(/* Rule */ rule, /* int */ year, /* int */ off){
// summary:
// Returns a date that the rule begins matching in the given year.
var month = getMonthNumber(rule[3]),
day = rule[4],
time = parseTimeString(rule[5]);
if(time[4] == "u"){
// We are UTC - so there is no offset to use
off = 0;
}
var d, dtDay, incr;
if(isNaN(day)){
if(day.substr(0, 4) == "last"){
// Last day of the month at the desired time of day
day = dayMap[day.substr(4,3).toLowerCase()];
d = new Date(getUTCStamp(year, month + 1, 1,
time[1] - 24, time[2], time[3],
off));
dtDay = _dd.add(d, "minute", -off).getUTCDay();
// Set it to the final day of the correct weekday that month
incr = (day > dtDay) ? (day - dtDay - 7) : (day - dtDay);
if(incr !== 0){
d = _dd.add(d, "hour", incr * 24);
}
return d;
}else{
day = dayMap[day.substr(0, 3).toLowerCase()];
if(day != "undefined"){
if(rule[4].substr(3, 2) == '>='){
// The stated date of the month
d = new Date(getUTCStamp(year, month, parseInt(rule[4].substr(5), 10),
time[1], time[2], time[3], off));
dtDay = _dd.add(d, "minute", -off).getUTCDay();
// Set to the first correct weekday after the stated date
incr = (day < dtDay) ? (day - dtDay + 7) : (day - dtDay);
if(incr !== 0){
d = _dd.add(d, "hour", incr * 24);
}
return d;
}else if(day.substr(3, 2) == '<='){
// The stated date of the month
d = new Date(getUTCStamp(year, month, parseInt(rule[4].substr(5), 10),
time[1], time[2], time[3], off));
dtDay = _dd.add(d, "minute", -off).getUTCDay();
// Set to first correct weekday before the stated date
incr = (day > dtDay) ? (day - dtDay - 7) : (day - dtDay);
if(incr !== 0){
d = _dd.add(d, "hour", incr * 24);
}
return d;
}
}
}
}else{
// Numeric date
d = new Date(getUTCStamp(year, month, parseInt(day, 10),
time[1], time[2], time[3], off));
return d;
}
return null;
}
function _getRulesForYear(/* Zone */ zone, /* int */ year){
var rules = [];
dojo.forEach(_rules[zone[1]]||[], function(r){
// Clean up rules as needed
for(var i = 0; i < 2; i++){
switch(r[i]){
case "min":
r[i] = _minYear;
break;
case "max":
r[i] = _maxYear;
break;
case "only":
break;
default:
r[i] = parseInt(r[i], 10);
if(isNaN(r[i])){
throw new Error('Invalid year found on rule');
}
break;
}
}
if(typeof r[6] == "string"){
// Change our offset to be an integer
r[6] = getOffsetInMins(r[6]);
}
// Quick-filter to grab all rules that match my year
if((r[0] <= year && r[1] >= year) || // Matches my y
(r[0] == year && r[1] == "only")){ // Matches my only
rules.push({r: r, d: _getRuleStart(r, year, zone[0])});
}
});
return rules;
}
function _loadZoneRanges(/* String */ tz, /* Object[] */ zoneList) {
// summary:
// Loads the zone ranges for the given timezone
var zr = _loadedRanges[tz] = [];
for(var i = 0; i < zoneList.length; i++){
var z = zoneList[i];
var r = zr[i] = [];
var prevZone = null;
var prevRange = null;
var prevRules = [];
// Set up our zone offset to not be a string anymore
if(typeof z[0] == "string"){
z[0] = getOffsetInMins(z[0]);
}
if(i === 0){
// The beginning of zoneinfo time - let's not worry about
// to-the-hour accuracy before Jan 1, 1835
r[0] = Date.UTC(_minYear,0,1,0,0,0,0);
}else{
r[0] = zr[i - 1][1];
prevZone = zoneList[i - 1];
prevRange = zr[i - 1];
prevRules = prevRange[2];
}
// Load the rules that will be going in to our zone
var startYear = new Date(r[0]).getUTCFullYear();
var endYear = z[3] ? parseInt(z[3], 10) : _maxYear;
var rlz = [];
var j;
for(j = startYear; j <= endYear; j++){
rlz = rlz.concat(_getRulesForYear(z, j));
}
rlz.sort(function(a, b){
return _dd.compare(a.d, b.d);
});
var rl;
for(j = 0, rl; (rl = rlz[j]); j++){
var prevRule = j > 0 ? rlz[j - 1] : null;
if(rl.r[5].indexOf("u") < 0 && rl.r[5].indexOf("s") < 0){
if(j === 0 && i > 0){
if(prevRules.length){
// We have a previous rule - so use it
rl.d = _dd.add(rl.d, "minute", prevRules[prevRules.length - 1].r[6]);
}else if(_dd.compare(new Date(prevRange[1]), rl.d, "date") === 0){
// No previous rules - but our date is the same as the
// previous zone ended on - so use that.
rl.d = new Date(prevRange[1]);
}else{
rl.d = _dd.add(rl.d, "minute", getOffsetInMins(prevZone[1]));
}
}else if(j > 0){
rl.d = _dd.add(rl.d, "minute", prevRule.r[6]);
}
}
}
r[2] = rlz;
if(!z[3]){
// The end of zoneinfo time - we'll cross this bridge when we
// get close to Dec 31, 2038
r[1] = Date.UTC(_maxYear,11,31,23,59,59,999);
}else{
var year = parseInt(z[3], 10),
month = getMonthNumber(z[4]||"Jan"),
day = parseInt(z[5]||"1", 10),
time = parseTimeString(z[6]||"0");
var utcStmp = r[1] = getUTCStamp(year, month, day,
time[1], time[2], time[3],
((time[4] == "u") ? 0 : z[0]));
if(isNaN(utcStmp)){
utcStmp = r[1] = _getRuleStart([0,0,0,z[4],z[5],z[6]||"0"],
year, ((time[4] == "u") ? 0 : z[0])).getTime();
}
var matches = dojo.filter(rlz, function(rl, idx){
var o = idx > 0 ? rlz[idx - 1].r[6] * 60 * 1000 : 0;
return (rl.d.getTime() < utcStmp + o);
});
if(time[4] != "u" && time[4] != "s"){
if(matches.length){
r[1] += matches[matches.length - 1].r[6] * 60 * 1000;
}else{
r[1] += getOffsetInMins(z[1]) * 60 * 1000;
}
}
}
}
}
function getZoneInfo(/* String */ dt, /* String */ tz) {
// summary:
// Returns the zone entry from the zoneinfo database for the given date
// and timezone
var t = tz;
var zoneList = _zones[t];
// Follow links to get to an actual zone
while(typeof zoneList == "string"){
t = zoneList;
zoneList = _zones[t];
}
if(!zoneList){
// Backward-compat file hasn't loaded yet, try looking in there
if(!_loadedZones.backward){
// This is for backward entries like "America/Fort_Wayne" that
// getRegionForTimezone *thinks* it has a region file and zone
// for (e.g., America => 'northamerica'), but in reality it's a
// legacy zone we need the backward file for
var parsed = loadZoneFile("backward", true);
return getZoneInfo(dt, tz); //Object
}
invalidTZError(t);
}
if(!_loadedRanges[tz]){
_loadZoneRanges(tz, zoneList);
}
var ranges = _loadedRanges[tz];
var tm = dt.getTime();
for(var i = 0, r; (r = ranges[i]); i++){
if(tm >= r[0] && tm < r[1]){
return {zone: zoneList[i], range: ranges[i], idx: i};
}
}
throw new Error('No Zone found for "' + tz + '" on ' + dt);
}
function getRule(/* Date */ dt, /* ZoneInfo */ zoneInfo) {
// summary:
// Returns the latest-matching rule entry from the zoneinfo
// database for the given date and zone
var lastMatch = -1;
var rules = zoneInfo.range[2]||[];
var tsp = dt.getTime();
var zr = zoneInfo.range;
for(var i = 0, r; (r = rules[i]); i++){
if(tsp >= r.d.getTime()){
lastMatch = i;
}
}
if(lastMatch >= 0){
return rules[lastMatch].r;
}
return null;
}
function getAbbreviation(/* String */ tz, /* Object */ zoneInfo, /* Object */ rule) {
// summary:
// Returns the abbreviation for the given zone and rule
var res;
var zone = zoneInfo.zone;
var base = zone[2];
if(base.indexOf('%s') > -1){
var repl;
if(rule){
repl = rule[7];
if(repl == "-"){ repl = ""; }
}else if(zone[1] in abbrExceptions){
repl = abbrExceptions[zone[1]];
}else{
if(zoneInfo.idx > 0){
// Check if our previous zone's base is the same as our
// current in "S" (standard) mode. If so, then use "S"
// for our replacement
var pz = _zones[tz][zoneInfo.idx - 1];
var pb = pz[2];
if(pb.indexOf('%s') < 0){
if(base.replace('%s', "S") == pb){
repl = "S";
}else{
repl = "";
}
}else{
repl = "";
}
}else{
repl = "";
}
}
res = base.replace('%s', repl);
}else if(base.indexOf("/") > -1){
var bs = base.split("/");
if(rule){
res = bs[rule[6] === 0 ? 0 : 1];
}else{
res = bs[0];
}
}else{
res = base;
}
return res; // String
}
/*=====
// TODO: none of this is AMD friendly. It's setting global variables in dojox,and not returning anything from the module.
// Plus, the override of dojo/date/locale's format() and _getZone() below. This needs to be refactored.
dojox.date.timezone = function(){
// summary:
// mix-in to dojo.date to provide timezones based on
// the Olson timezone data
// description:
// mix-in to dojo.date to provide timezones based on
// the Olson timezone data.
// If you pass "timezone" as a parameter to your format options,
// then you get the date formatted (and offset) for that timezone
//TODOC
};
dojox.date.timezone.getTzInfo = function(dt, tz){
// summary:
// Returns the timezone information for the given date and
// timezone string
// dt: Date
// The Date - a "proxyDate"
// tz: String
// String representation of the timezone you want to get info
// for date
};
dojox.date.timezone.loadZoneData = function(data){
// summary:
// Loads the given data object into the zone database
// data: Object
// The data to load - contains "zones" and "rules" parameters
};
dojox.date.timezone.getAllZones = function(){
// summary:
// Returns an array of zones that have been loaded
};
=====*/
dojo.setObject("dojox.date.timezone", {
getTzInfo: function(/* Date */ dt, /* String */ tz){
// Lazy-load any zones not yet loaded
if(loadingScheme == "lazyLoad"){
// Get the correct region for the zone
var zoneFile = getRegionForTimezone(tz);
if(!zoneFile){
throw new Error("Not a valid timezone ID.");
}else{
if(!_loadedZones[zoneFile]){
// Get the file and parse it -- use synchronous XHR
loadZoneFile(zoneFile);
}
}
}
var zoneInfo = getZoneInfo(dt, tz);
var off = zoneInfo.zone[0];
// See if the offset needs adjustment
var rule = getRule(dt, zoneInfo);
if(rule){
off += rule[6];
}else{
if(_rules[zoneInfo.zone[1]] && zoneInfo.idx > 0){
off += getOffsetInMins(_zones[tz][zoneInfo.idx - 1][1]);
}else{
off += getOffsetInMins(zoneInfo.zone[1]);
}
}
var abbr = getAbbreviation(tz, zoneInfo, rule);
return { tzOffset: off, tzAbbr: abbr }; // Object
},
loadZoneData: function(data){
loadZoneData(data);
},
getAllZones: function(){
var arr = [];
for(var z in _zones){ arr.push(z); }
arr.sort();
return arr; // String[]
}
});
// Now - initialize the stuff that we should have pre-loaded
if(typeof defaultZoneFile == "string" && defaultZoneFile){
defaultZoneFile = [defaultZoneFile];
}
if(dojo.isArray(defaultZoneFile)){
dojo.forEach(defaultZoneFile, loadZoneFile);
}
// And enhance the default formatting functions
// If you pass "timezone" as a parameter to your format options,
// then you get the date formatted (and offset) for that timezone
var oLocaleFmt = _ddl.format,
oGetZone = _ddl._getZone;
_ddl.format = function(dateObject, options){
options = options||{};
if(options.timezone && !options._tzInfo){
// Store it in our options so we can use it later
options._tzInfo = dojox.date.timezone.getTzInfo(dateObject, options.timezone);
}
if(options._tzInfo){
// Roll our date to display the correct time according to the
// desired offset
var offset = dateObject.getTimezoneOffset() - options._tzInfo.tzOffset;
dateObject = new Date(dateObject.getTime() + (offset * 60 * 1000));
}
return oLocaleFmt.call(this, dateObject, options);
};
_ddl._getZone = function(dateObject, getName, options){
if(options._tzInfo){
return getName ? options._tzInfo.tzAbbr : options._tzInfo.tzOffset;
}
return oGetZone.call(this, dateObject, getName, options);
};
/*=====
// Hide these enhancements from the doc parser because they obscure the original definition of _getZone() and
// format. TODO: change above overrides to around() advice so that original definitions aren't changed.
_ddl.format = oLocaleFmt;
_ddl._getZone = oGetZone;
=====*/
});