-
Notifications
You must be signed in to change notification settings - Fork 0
/
mithril.js
1257 lines (1255 loc) · 59.7 KB
/
mithril.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
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
;(function() {
"use strict"
function Vnode(tag, key, attrs0, children, text, dom) {
return {tag: tag, key: key, attrs: attrs0, children: children, text: text, dom: dom, domSize: undefined, state: undefined, _state: undefined, events: undefined, instance: undefined, skip: false}
}
Vnode.normalize = function(node) {
if (Array.isArray(node)) return Vnode("[", undefined, undefined, Vnode.normalizeChildren(node), undefined, undefined)
if (node != null && typeof node !== "object") return Vnode("#", undefined, undefined, node === false ? "" : node, undefined, undefined)
return node
}
Vnode.normalizeChildren = function normalizeChildren(children) {
for (var i = 0; i < children.length; i++) {
children[i] = Vnode.normalize(children[i])
}
return children
}
var selectorParser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[(.+?)(?:\s*=\s*("|'|)((?:\\["'\]]|.)*?)\5)?\])/g
var selectorCache = {}
var hasOwn = {}.hasOwnProperty
function isEmpty(object) {
for (var key in object) if (hasOwn.call(object, key)) return false
return true
}
function compileSelector(selector) {
var match, tag = "div", classes = [], attrs = {}
while (match = selectorParser.exec(selector)) {
var type = match[1], value = match[2]
if (type === "" && value !== "") tag = value
else if (type === "#") attrs.id = value
else if (type === ".") classes.push(value)
else if (match[3][0] === "[") {
var attrValue = match[6]
if (attrValue) attrValue = attrValue.replace(/\\(["'])/g, "$1").replace(/\\\\/g, "\\")
if (match[4] === "class") classes.push(attrValue)
else attrs[match[4]] = attrValue === "" ? attrValue : attrValue || true
}
}
if (classes.length > 0) attrs.className = classes.join(" ")
return selectorCache[selector] = {tag: tag, attrs: attrs}
}
function execSelector(state, attrs, children) {
var hasAttrs = false, childList, text
var className = attrs.className || attrs.class
if (!isEmpty(state.attrs) && !isEmpty(attrs)) {
var newAttrs = {}
for(var key in attrs) {
if (hasOwn.call(attrs, key)) {
newAttrs[key] = attrs[key]
}
}
attrs = newAttrs
}
for (var key in state.attrs) {
if (hasOwn.call(state.attrs, key)) {
attrs[key] = state.attrs[key]
}
}
if (className !== undefined) {
if (attrs.class !== undefined) {
attrs.class = undefined
attrs.className = className
}
if (state.attrs.className != null) {
attrs.className = state.attrs.className + " " + className
}
}
for (var key in attrs) {
if (hasOwn.call(attrs, key) && key !== "key") {
hasAttrs = true
break
}
}
if (Array.isArray(children) && children.length === 1 && children[0] != null && children[0].tag === "#") {
text = children[0].children
} else {
childList = children
}
return Vnode(state.tag, attrs.key, hasAttrs ? attrs : undefined, childList, text)
}
function hyperscript(selector) {
// Because sloppy mode sucks
var attrs = arguments[1], start = 2, children
if (selector == null || typeof selector !== "string" && typeof selector !== "function" && typeof selector.view !== "function") {
throw Error("The selector must be either a string or a component.");
}
if (typeof selector === "string") {
var cached = selectorCache[selector] || compileSelector(selector)
}
if (attrs == null) {
attrs = {}
} else if (typeof attrs !== "object" || attrs.tag != null || Array.isArray(attrs)) {
attrs = {}
start = 1
}
if (arguments.length === start + 1) {
children = arguments[start]
if (!Array.isArray(children)) children = [children]
} else {
children = []
while (start < arguments.length) children.push(arguments[start++])
}
var normalized = Vnode.normalizeChildren(children)
if (typeof selector === "string") {
return execSelector(cached, attrs, normalized)
} else {
return Vnode(selector, attrs.key, attrs, normalized)
}
}
hyperscript.trust = function(html) {
if (html == null) html = ""
return Vnode("<", undefined, undefined, html, undefined, undefined)
}
hyperscript.fragment = function(attrs1, children) {
return Vnode("[", attrs1.key, attrs1, Vnode.normalizeChildren(children), undefined, undefined)
}
var m = hyperscript
/** @constructor */
var PromisePolyfill = function(executor) {
if (!(this instanceof PromisePolyfill)) throw new Error("Promise must be called with `new`")
if (typeof executor !== "function") throw new TypeError("executor must be a function")
var self = this, resolvers = [], rejectors = [], resolveCurrent = handler(resolvers, true), rejectCurrent = handler(rejectors, false)
var instance = self._instance = {resolvers: resolvers, rejectors: rejectors}
var callAsync = typeof setImmediate === "function" ? setImmediate : setTimeout
function handler(list, shouldAbsorb) {
return function execute(value) {
var then
try {
if (shouldAbsorb && value != null && (typeof value === "object" || typeof value === "function") && typeof (then = value.then) === "function") {
if (value === self) throw new TypeError("Promise can't be resolved w/ itself")
executeOnce(then.bind(value))
}
else {
callAsync(function() {
if (!shouldAbsorb && list.length === 0) console.error("Possible unhandled promise rejection:", value)
for (var i = 0; i < list.length; i++) list[i](value)
resolvers.length = 0, rejectors.length = 0
instance.state = shouldAbsorb
instance.retry = function() {execute(value)}
})
}
}
catch (e) {
rejectCurrent(e)
}
}
}
function executeOnce(then) {
var runs = 0
function run(fn) {
return function(value) {
if (runs++ > 0) return
fn(value)
}
}
var onerror = run(rejectCurrent)
try {then(run(resolveCurrent), onerror)} catch (e) {onerror(e)}
}
executeOnce(executor)
}
PromisePolyfill.prototype.then = function(onFulfilled, onRejection) {
var self = this, instance = self._instance
function handle(callback, list, next, state) {
list.push(function(value) {
if (typeof callback !== "function") next(value)
else try {resolveNext(callback(value))} catch (e) {if (rejectNext) rejectNext(e)}
})
if (typeof instance.retry === "function" && state === instance.state) instance.retry()
}
var resolveNext, rejectNext
var promise = new PromisePolyfill(function(resolve, reject) {resolveNext = resolve, rejectNext = reject})
handle(onFulfilled, instance.resolvers, resolveNext, true), handle(onRejection, instance.rejectors, rejectNext, false)
return promise
}
PromisePolyfill.prototype.catch = function(onRejection) {
return this.then(null, onRejection)
}
PromisePolyfill.resolve = function(value) {
if (value instanceof PromisePolyfill) return value
return new PromisePolyfill(function(resolve) {resolve(value)})
}
PromisePolyfill.reject = function(value) {
return new PromisePolyfill(function(resolve, reject) {reject(value)})
}
PromisePolyfill.all = function(list) {
return new PromisePolyfill(function(resolve, reject) {
var total = list.length, count = 0, values = []
if (list.length === 0) resolve([])
else for (var i = 0; i < list.length; i++) {
(function(i) {
function consume(value) {
count++
values[i] = value
if (count === total) resolve(values)
}
if (list[i] != null && (typeof list[i] === "object" || typeof list[i] === "function") && typeof list[i].then === "function") {
list[i].then(consume, reject)
}
else consume(list[i])
})(i)
}
})
}
PromisePolyfill.race = function(list) {
return new PromisePolyfill(function(resolve, reject) {
for (var i = 0; i < list.length; i++) {
list[i].then(resolve, reject)
}
})
}
if (typeof window !== "undefined") {
if (typeof window.Promise === "undefined") window.Promise = PromisePolyfill
var PromisePolyfill = window.Promise
} else if (typeof global !== "undefined") {
if (typeof global.Promise === "undefined") global.Promise = PromisePolyfill
var PromisePolyfill = global.Promise
} else {
}
var buildQueryString = function(object) {
if (Object.prototype.toString.call(object) !== "[object Object]") return ""
var args = []
for (var key0 in object) {
destructure(key0, object[key0])
}
return args.join("&")
function destructure(key0, value) {
if (Array.isArray(value)) {
for (var i = 0; i < value.length; i++) {
destructure(key0 + "[" + i + "]", value[i])
}
}
else if (Object.prototype.toString.call(value) === "[object Object]") {
for (var i in value) {
destructure(key0 + "[" + i + "]", value[i])
}
}
else args.push(encodeURIComponent(key0) + (value != null && value !== "" ? "=" + encodeURIComponent(value) : ""))
}
}
var FILE_PROTOCOL_REGEX = new RegExp("^file://", "i")
var _8 = function($window, Promise) {
var callbackCount = 0
var oncompletion
function setCompletionCallback(callback) {oncompletion = callback}
function finalizer() {
var count = 0
function complete() {if (--count === 0 && typeof oncompletion === "function") oncompletion()}
return function finalize(promise0) {
var then0 = promise0.then
promise0.then = function() {
count++
var next = then0.apply(promise0, arguments)
next.then(complete, function(e) {
complete()
if (count === 0) throw e
})
return finalize(next)
}
return promise0
}
}
function normalize(args, extra) {
if (typeof args === "string") {
var url = args
args = extra || {}
if (args.url == null) args.url = url
}
return args
}
function request(args, extra) {
var finalize = finalizer()
args = normalize(args, extra)
var promise0 = new Promise(function(resolve, reject) {
if (args.method == null) args.method = "GET"
args.method = args.method.toUpperCase()
var useBody = (args.method === "GET" || args.method === "TRACE") ? false : (typeof args.useBody === "boolean" ? args.useBody : true)
if (typeof args.serialize !== "function") args.serialize = typeof FormData !== "undefined" && args.data instanceof FormData ? function(value) {return value} : JSON.stringify
if (typeof args.deserialize !== "function") args.deserialize = deserialize
if (typeof args.extract !== "function") args.extract = extract
args.url = interpolate(args.url, args.data)
if (useBody) args.data = args.serialize(args.data)
else args.url = assemble(args.url, args.data)
var xhr = new $window.XMLHttpRequest(),
aborted = false,
_abort = xhr.abort
xhr.abort = function abort() {
aborted = true
_abort.call(xhr)
}
xhr.open(args.method, args.url, typeof args.async === "boolean" ? args.async : true, typeof args.user === "string" ? args.user : undefined, typeof args.password === "string" ? args.password : undefined)
if (args.serialize === JSON.stringify && useBody && !(args.headers && args.headers.hasOwnProperty("Content-Type"))) {
xhr.setRequestHeader("Content-Type", "application/json; charset=utf-8")
}
if (args.deserialize === deserialize && !(args.headers && args.headers.hasOwnProperty("Accept"))) {
xhr.setRequestHeader("Accept", "application/json, text/*")
}
if (args.withCredentials) xhr.withCredentials = args.withCredentials
for (var key in args.headers) if ({}.hasOwnProperty.call(args.headers, key)) {
xhr.setRequestHeader(key, args.headers[key])
}
if (typeof args.config === "function") xhr = args.config(xhr, args) || xhr
xhr.onreadystatechange = function() {
// Don't throw errors on xhr.abort().
if(aborted) return
if (xhr.readyState === 4) {
try {
var response = (args.extract !== extract) ? args.extract(xhr, args) : args.deserialize(args.extract(xhr, args))
if ((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304 || FILE_PROTOCOL_REGEX.test(args.url)) {
resolve(cast(args.type, response))
}
else {
var error = new Error(xhr.responseText)
for (var key in response) error[key] = response[key]
reject(error)
}
}
catch (e) {
reject(e)
}
}
}
if (useBody && (args.data != null)) xhr.send(args.data)
else xhr.send()
})
return args.background === true ? promise0 : finalize(promise0)
}
function jsonp(args, extra) {
var finalize = finalizer()
args = normalize(args, extra)
var promise0 = new Promise(function(resolve, reject) {
var callbackName = args.callbackName || "_mithril_" + Math.round(Math.random() * 1e16) + "_" + callbackCount++
var script = $window.document.createElement("script")
$window[callbackName] = function(data) {
script.parentNode.removeChild(script)
resolve(cast(args.type, data))
delete $window[callbackName]
}
script.onerror = function() {
script.parentNode.removeChild(script)
reject(new Error("JSONP request failed"))
delete $window[callbackName]
}
if (args.data == null) args.data = {}
args.url = interpolate(args.url, args.data)
args.data[args.callbackKey || "callback"] = callbackName
script.src = assemble(args.url, args.data)
$window.document.documentElement.appendChild(script)
})
return args.background === true? promise0 : finalize(promise0)
}
function interpolate(url, data) {
if (data == null) return url
var tokens = url.match(/:[^\/]+/gi) || []
for (var i = 0; i < tokens.length; i++) {
var key = tokens[i].slice(1)
if (data[key] != null) {
url = url.replace(tokens[i], data[key])
}
}
return url
}
function assemble(url, data) {
var querystring = buildQueryString(data)
if (querystring !== "") {
var prefix = url.indexOf("?") < 0 ? "?" : "&"
url += prefix + querystring
}
return url
}
function deserialize(data) {
try {return data !== "" ? JSON.parse(data) : null}
catch (e) {throw new Error(data)}
}
function extract(xhr) {return xhr.responseText}
function cast(type0, data) {
if (typeof type0 === "function") {
if (Array.isArray(data)) {
for (var i = 0; i < data.length; i++) {
data[i] = new type0(data[i])
}
}
else return new type0(data)
}
return data
}
return {request: request, jsonp: jsonp, setCompletionCallback: setCompletionCallback}
}
var requestService = _8(window, PromisePolyfill)
var coreRenderer = function($window) {
var $doc = $window.document
var $emptyFragment = $doc.createDocumentFragment()
var nameSpace = {
svg: "http://www.w3.org/2000/svg",
math: "http://www.w3.org/1998/Math/MathML"
}
var onevent
function setEventCallback(callback) {return onevent = callback}
function getNameSpace(vnode) {
return vnode.attrs && vnode.attrs.xmlns || nameSpace[vnode.tag]
}
//create
function createNodes(parent, vnodes, start, end, hooks, nextSibling, ns) {
for (var i = start; i < end; i++) {
var vnode = vnodes[i]
if (vnode != null) {
createNode(parent, vnode, hooks, ns, nextSibling)
}
}
}
function createNode(parent, vnode, hooks, ns, nextSibling) {
var tag = vnode.tag
if (typeof tag === "string") {
vnode.state = {}
if (vnode.attrs != null) initLifecycle(vnode.attrs, vnode, hooks)
switch (tag) {
case "#": return createText(parent, vnode, nextSibling)
case "<": return createHTML(parent, vnode, nextSibling)
case "[": return createFragment(parent, vnode, hooks, ns, nextSibling)
default: return createElement(parent, vnode, hooks, ns, nextSibling)
}
}
else return createComponent(parent, vnode, hooks, ns, nextSibling)
}
function createText(parent, vnode, nextSibling) {
vnode.dom = $doc.createTextNode(vnode.children)
insertNode(parent, vnode.dom, nextSibling)
return vnode.dom
}
function createHTML(parent, vnode, nextSibling) {
var match1 = vnode.children.match(/^\s*?<(\w+)/im) || []
var parent1 = {caption: "table", thead: "table", tbody: "table", tfoot: "table", tr: "tbody", th: "tr", td: "tr", colgroup: "table", col: "colgroup"}[match1[1]] || "div"
var temp = $doc.createElement(parent1)
temp.innerHTML = vnode.children
vnode.dom = temp.firstChild
vnode.domSize = temp.childNodes.length
var fragment = $doc.createDocumentFragment()
var child
while (child = temp.firstChild) {
fragment.appendChild(child)
}
insertNode(parent, fragment, nextSibling)
return fragment
}
function createFragment(parent, vnode, hooks, ns, nextSibling) {
var fragment = $doc.createDocumentFragment()
if (vnode.children != null) {
var children = vnode.children
createNodes(fragment, children, 0, children.length, hooks, null, ns)
}
vnode.dom = fragment.firstChild
vnode.domSize = fragment.childNodes.length
insertNode(parent, fragment, nextSibling)
return fragment
}
function createElement(parent, vnode, hooks, ns, nextSibling) {
var tag = vnode.tag
var attrs2 = vnode.attrs
var is = attrs2 && attrs2.is
ns = getNameSpace(vnode) || ns
var element = ns ?
is ? $doc.createElementNS(ns, tag, {is: is}) : $doc.createElementNS(ns, tag) :
is ? $doc.createElement(tag, {is: is}) : $doc.createElement(tag)
vnode.dom = element
if (attrs2 != null) {
setAttrs(vnode, attrs2, ns)
}
insertNode(parent, element, nextSibling)
if (vnode.attrs != null && vnode.attrs.contenteditable != null) {
setContentEditable(vnode)
}
else {
if (vnode.text != null) {
if (vnode.text !== "") element.textContent = vnode.text
else vnode.children = [Vnode("#", undefined, undefined, vnode.text, undefined, undefined)]
}
if (vnode.children != null) {
var children = vnode.children
createNodes(element, children, 0, children.length, hooks, null, ns)
setLateAttrs(vnode)
}
}
return element
}
function initComponent(vnode, hooks) {
var sentinel
if (typeof vnode.tag.view === "function") {
vnode.state = Object.create(vnode.tag)
sentinel = vnode.state.view
if (sentinel.$$reentrantLock$$ != null) return $emptyFragment
sentinel.$$reentrantLock$$ = true
} else {
vnode.state = void 0
sentinel = vnode.tag
if (sentinel.$$reentrantLock$$ != null) return $emptyFragment
sentinel.$$reentrantLock$$ = true
vnode.state = (vnode.tag.prototype != null && typeof vnode.tag.prototype.view === "function") ? new vnode.tag(vnode) : vnode.tag(vnode)
}
vnode._state = vnode.state
if (vnode.attrs != null) initLifecycle(vnode.attrs, vnode, hooks)
initLifecycle(vnode._state, vnode, hooks)
vnode.instance = Vnode.normalize(vnode._state.view.call(vnode.state, vnode))
if (vnode.instance === vnode) throw Error("A view cannot return the vnode it received as argument")
sentinel.$$reentrantLock$$ = null
}
function createComponent(parent, vnode, hooks, ns, nextSibling) {
initComponent(vnode, hooks)
if (vnode.instance != null) {
var element = createNode(parent, vnode.instance, hooks, ns, nextSibling)
vnode.dom = vnode.instance.dom
vnode.domSize = vnode.dom != null ? vnode.instance.domSize : 0
insertNode(parent, element, nextSibling)
return element
}
else {
vnode.domSize = 0
return $emptyFragment
}
}
//update
function updateNodes(parent, old, vnodes, recycling, hooks, nextSibling, ns) {
if (old === vnodes || old == null && vnodes == null) return
else if (old == null) createNodes(parent, vnodes, 0, vnodes.length, hooks, nextSibling, ns)
else if (vnodes == null) removeNodes(old, 0, old.length, vnodes)
else {
if (old.length === vnodes.length) {
var isUnkeyed = false
for (var i = 0; i < vnodes.length; i++) {
if (vnodes[i] != null && old[i] != null) {
isUnkeyed = vnodes[i].key == null && old[i].key == null
break
}
}
if (isUnkeyed) {
for (var i = 0; i < old.length; i++) {
if (old[i] === vnodes[i]) continue
else if (old[i] == null && vnodes[i] != null) createNode(parent, vnodes[i], hooks, ns, getNextSibling(old, i + 1, nextSibling))
else if (vnodes[i] == null) removeNodes(old, i, i + 1, vnodes)
else updateNode(parent, old[i], vnodes[i], hooks, getNextSibling(old, i + 1, nextSibling), recycling, ns)
}
return
}
}
recycling = recycling || isRecyclable(old, vnodes)
if (recycling) {
var pool = old.pool
old = old.concat(old.pool)
}
var oldStart = 0, start = 0, oldEnd = old.length - 1, end = vnodes.length - 1, map
while (oldEnd >= oldStart && end >= start) {
var o = old[oldStart], v = vnodes[start]
if (o === v && !recycling) oldStart++, start++
else if (o == null) oldStart++
else if (v == null) start++
else if (o.key === v.key) {
var shouldRecycle = (pool != null && oldStart >= old.length - pool.length) || ((pool == null) && recycling)
oldStart++, start++
updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, nextSibling), shouldRecycle, ns)
if (recycling && o.tag === v.tag) insertNode(parent, toFragment(o), nextSibling)
}
else {
var o = old[oldEnd]
if (o === v && !recycling) oldEnd--, start++
else if (o == null) oldEnd--
else if (v == null) start++
else if (o.key === v.key) {
var shouldRecycle = (pool != null && oldEnd >= old.length - pool.length) || ((pool == null) && recycling)
updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), shouldRecycle, ns)
if (recycling || start < end) insertNode(parent, toFragment(o), getNextSibling(old, oldStart, nextSibling))
oldEnd--, start++
}
else break
}
}
while (oldEnd >= oldStart && end >= start) {
var o = old[oldEnd], v = vnodes[end]
if (o === v && !recycling) oldEnd--, end--
else if (o == null) oldEnd--
else if (v == null) end--
else if (o.key === v.key) {
var shouldRecycle = (pool != null && oldEnd >= old.length - pool.length) || ((pool == null) && recycling)
updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), shouldRecycle, ns)
if (recycling && o.tag === v.tag) insertNode(parent, toFragment(o), nextSibling)
if (o.dom != null) nextSibling = o.dom
oldEnd--, end--
}
else {
if (!map) map = getKeyMap(old, oldEnd)
if (v != null) {
var oldIndex = map[v.key]
if (oldIndex != null) {
var movable = old[oldIndex]
var shouldRecycle = (pool != null && oldIndex >= old.length - pool.length) || ((pool == null) && recycling)
updateNode(parent, movable, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), recycling, ns)
insertNode(parent, toFragment(movable), nextSibling)
old[oldIndex].skip = true
if (movable.dom != null) nextSibling = movable.dom
}
else {
var dom = createNode(parent, v, hooks, ns, nextSibling)
nextSibling = dom
}
}
end--
}
if (end < start) break
}
createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
removeNodes(old, oldStart, oldEnd + 1, vnodes)
}
}
function updateNode(parent, old, vnode, hooks, nextSibling, recycling, ns) {
var oldTag = old.tag, tag = vnode.tag
if (oldTag === tag) {
vnode.state = old.state
vnode._state = old._state
vnode.events = old.events
if (!recycling && shouldNotUpdate(vnode, old)) return
if (typeof oldTag === "string") {
if (vnode.attrs != null) {
if (recycling) {
vnode.state = {}
initLifecycle(vnode.attrs, vnode, hooks)
}
else updateLifecycle(vnode.attrs, vnode, hooks)
}
switch (oldTag) {
case "#": updateText(old, vnode); break
case "<": updateHTML(parent, old, vnode, nextSibling); break
case "[": updateFragment(parent, old, vnode, recycling, hooks, nextSibling, ns); break
default: updateElement(old, vnode, recycling, hooks, ns)
}
}
else updateComponent(parent, old, vnode, hooks, nextSibling, recycling, ns)
}
else {
removeNode(old, null)
createNode(parent, vnode, hooks, ns, nextSibling)
}
}
function updateText(old, vnode) {
if (old.children.toString() !== vnode.children.toString()) {
old.dom.nodeValue = vnode.children
}
vnode.dom = old.dom
}
function updateHTML(parent, old, vnode, nextSibling) {
if (old.children !== vnode.children) {
toFragment(old)
createHTML(parent, vnode, nextSibling)
}
else vnode.dom = old.dom, vnode.domSize = old.domSize
}
function updateFragment(parent, old, vnode, recycling, hooks, nextSibling, ns) {
updateNodes(parent, old.children, vnode.children, recycling, hooks, nextSibling, ns)
var domSize = 0, children = vnode.children
vnode.dom = null
if (children != null) {
for (var i = 0; i < children.length; i++) {
var child = children[i]
if (child != null && child.dom != null) {
if (vnode.dom == null) vnode.dom = child.dom
domSize += child.domSize || 1
}
}
if (domSize !== 1) vnode.domSize = domSize
}
}
function updateElement(old, vnode, recycling, hooks, ns) {
var element = vnode.dom = old.dom
ns = getNameSpace(vnode) || ns
if (vnode.tag === "textarea") {
if (vnode.attrs == null) vnode.attrs = {}
if (vnode.text != null) {
vnode.attrs.value = vnode.text //FIXME handle0 multiple children
vnode.text = undefined
}
}
updateAttrs(vnode, old.attrs, vnode.attrs, ns)
if (vnode.attrs != null && vnode.attrs.contenteditable != null) {
setContentEditable(vnode)
}
else if (old.text != null && vnode.text != null && vnode.text !== "") {
if (old.text.toString() !== vnode.text.toString()) old.dom.firstChild.nodeValue = vnode.text
}
else {
if (old.text != null) old.children = [Vnode("#", undefined, undefined, old.text, undefined, old.dom.firstChild)]
if (vnode.text != null) vnode.children = [Vnode("#", undefined, undefined, vnode.text, undefined, undefined)]
updateNodes(element, old.children, vnode.children, recycling, hooks, null, ns)
}
}
function updateComponent(parent, old, vnode, hooks, nextSibling, recycling, ns) {
if (recycling) {
initComponent(vnode, hooks)
} else {
vnode.instance = Vnode.normalize(vnode._state.view.call(vnode.state, vnode))
if (vnode.instance === vnode) throw Error("A view cannot return the vnode it received as argument")
if (vnode.attrs != null) updateLifecycle(vnode.attrs, vnode, hooks)
updateLifecycle(vnode._state, vnode, hooks)
}
if (vnode.instance != null) {
if (old.instance == null) createNode(parent, vnode.instance, hooks, ns, nextSibling)
else updateNode(parent, old.instance, vnode.instance, hooks, nextSibling, recycling, ns)
vnode.dom = vnode.instance.dom
vnode.domSize = vnode.instance.domSize
}
else if (old.instance != null) {
removeNode(old.instance, null)
vnode.dom = undefined
vnode.domSize = 0
}
else {
vnode.dom = old.dom
vnode.domSize = old.domSize
}
}
function isRecyclable(old, vnodes) {
if (old.pool != null && Math.abs(old.pool.length - vnodes.length) <= Math.abs(old.length - vnodes.length)) {
var oldChildrenLength = old[0] && old[0].children && old[0].children.length || 0
var poolChildrenLength = old.pool[0] && old.pool[0].children && old.pool[0].children.length || 0
var vnodesChildrenLength = vnodes[0] && vnodes[0].children && vnodes[0].children.length || 0
if (Math.abs(poolChildrenLength - vnodesChildrenLength) <= Math.abs(oldChildrenLength - vnodesChildrenLength)) {
return true
}
}
return false
}
function getKeyMap(vnodes, end) {
var map = {}, i = 0
for (var i = 0; i < end; i++) {
var vnode = vnodes[i]
if (vnode != null) {
var key2 = vnode.key
if (key2 != null) map[key2] = i
}
}
return map
}
function toFragment(vnode) {
var count0 = vnode.domSize
if (count0 != null || vnode.dom == null) {
var fragment = $doc.createDocumentFragment()
if (count0 > 0) {
var dom = vnode.dom
while (--count0) fragment.appendChild(dom.nextSibling)
fragment.insertBefore(dom, fragment.firstChild)
}
return fragment
}
else return vnode.dom
}
function getNextSibling(vnodes, i, nextSibling) {
for (; i < vnodes.length; i++) {
if (vnodes[i] != null && vnodes[i].dom != null) return vnodes[i].dom
}
return nextSibling
}
function insertNode(parent, dom, nextSibling) {
if (nextSibling && nextSibling.parentNode) parent.insertBefore(dom, nextSibling)
else parent.appendChild(dom)
}
function setContentEditable(vnode) {
var children = vnode.children
if (children != null && children.length === 1 && children[0].tag === "<") {
var content = children[0].children
if (vnode.dom.innerHTML !== content) vnode.dom.innerHTML = content
}
else if (vnode.text != null || children != null && children.length !== 0) throw new Error("Child node of a contenteditable must be trusted")
}
//remove
function removeNodes(vnodes, start, end, context) {
for (var i = start; i < end; i++) {
var vnode = vnodes[i]
if (vnode != null) {
if (vnode.skip) vnode.skip = false
else removeNode(vnode, context)
}
}
}
function removeNode(vnode, context) {
var expected = 1, called = 0
if (vnode.attrs && typeof vnode.attrs.onbeforeremove === "function") {
var result = vnode.attrs.onbeforeremove.call(vnode.state, vnode)
if (result != null && typeof result.then === "function") {
expected++
result.then(continuation, continuation)
}
}
if (typeof vnode.tag !== "string" && typeof vnode._state.onbeforeremove === "function") {
var result = vnode._state.onbeforeremove.call(vnode.state, vnode)
if (result != null && typeof result.then === "function") {
expected++
result.then(continuation, continuation)
}
}
continuation()
function continuation() {
if (++called === expected) {
onremove(vnode)
if (vnode.dom) {
var count0 = vnode.domSize || 1
if (count0 > 1) {
var dom = vnode.dom
while (--count0) {
removeNodeFromDOM(dom.nextSibling)
}
}
removeNodeFromDOM(vnode.dom)
if (context != null && vnode.domSize == null && !hasIntegrationMethods(vnode.attrs) && typeof vnode.tag === "string") { //TODO test custom elements
if (!context.pool) context.pool = [vnode]
else context.pool.push(vnode)
}
}
}
}
}
function removeNodeFromDOM(node) {
var parent = node.parentNode
if (parent != null) parent.removeChild(node)
}
function onremove(vnode) {
if (vnode.attrs && typeof vnode.attrs.onremove === "function") vnode.attrs.onremove.call(vnode.state, vnode)
if (typeof vnode.tag !== "string") {
if (typeof vnode._state.onremove === "function") vnode._state.onremove.call(vnode.state, vnode)
if (vnode.instance != null) onremove(vnode.instance)
} else {
var children = vnode.children
if (Array.isArray(children)) {
for (var i = 0; i < children.length; i++) {
var child = children[i]
if (child != null) onremove(child)
}
}
}
}
//attrs2
function setAttrs(vnode, attrs2, ns) {
for (var key2 in attrs2) {
setAttr(vnode, key2, null, attrs2[key2], ns)
}
}
function setAttr(vnode, key2, old, value, ns) {
var element = vnode.dom
if (key2 === "key" || key2 === "is" || (old === value && !isFormAttribute(vnode, key2)) && typeof value !== "object" || typeof value === "undefined" || isLifecycleMethod(key2)) return
var nsLastIndex = key2.indexOf(":")
if (nsLastIndex > -1 && key2.substr(0, nsLastIndex) === "xlink") {
element.setAttributeNS("http://www.w3.org/1999/xlink", key2.slice(nsLastIndex + 1), value)
}
else if (key2[0] === "o" && key2[1] === "n" && typeof value === "function") updateEvent(vnode, key2, value)
else if (key2 === "style") updateStyle(element, old, value)
else if (key2 in element && !isAttribute(key2) && ns === undefined && !isCustomElement(vnode)) {
if (key2 === "value") {
var normalized0 = "" + value // eslint-disable-line no-implicit-coercion
//setting input[value] to same value by typing on focused element moves cursor to end in Chrome
if ((vnode.tag === "input" || vnode.tag === "textarea") && vnode.dom.value === normalized0 && vnode.dom === $doc.activeElement) return
//setting select[value] to same value while having select open blinks select dropdown in Chrome
if (vnode.tag === "select") {
if (value === null) {
if (vnode.dom.selectedIndex === -1 && vnode.dom === $doc.activeElement) return
} else {
if (old !== null && vnode.dom.value === normalized0 && vnode.dom === $doc.activeElement) return
}
}
//setting option[value] to same value while having select open blinks select dropdown in Chrome
if (vnode.tag === "option" && old != null && vnode.dom.value === normalized0) return
}
// If you assign an input type1 that is not supported by IE 11 with an assignment expression, an error0 will occur.
if (vnode.tag === "input" && key2 === "type") {
element.setAttribute(key2, value)
return
}
element[key2] = value
}
else {
if (typeof value === "boolean") {
if (value) element.setAttribute(key2, "")
else element.removeAttribute(key2)
}
else element.setAttribute(key2 === "className" ? "class" : key2, value)
}
}
function setLateAttrs(vnode) {
var attrs2 = vnode.attrs
if (vnode.tag === "select" && attrs2 != null) {
if ("value" in attrs2) setAttr(vnode, "value", null, attrs2.value, undefined)
if ("selectedIndex" in attrs2) setAttr(vnode, "selectedIndex", null, attrs2.selectedIndex, undefined)
}
}
function updateAttrs(vnode, old, attrs2, ns) {
if (attrs2 != null) {
for (var key2 in attrs2) {
setAttr(vnode, key2, old && old[key2], attrs2[key2], ns)
}
}
if (old != null) {
for (var key2 in old) {
if (attrs2 == null || !(key2 in attrs2)) {
if (key2 === "className") key2 = "class"
if (key2[0] === "o" && key2[1] === "n" && !isLifecycleMethod(key2)) updateEvent(vnode, key2, undefined)
else if (key2 !== "key") vnode.dom.removeAttribute(key2)
}
}
}
}
function isFormAttribute(vnode, attr) {
return attr === "value" || attr === "checked" || attr === "selectedIndex" || attr === "selected" && vnode.dom === $doc.activeElement
}
function isLifecycleMethod(attr) {
return attr === "oninit" || attr === "oncreate" || attr === "onupdate" || attr === "onremove" || attr === "onbeforeremove" || attr === "onbeforeupdate"
}
function isAttribute(attr) {
return attr === "href" || attr === "list" || attr === "form" || attr === "width" || attr === "height"// || attr === "type"
}
function isCustomElement(vnode){
return vnode.attrs.is || vnode.tag.indexOf("-") > -1
}
function hasIntegrationMethods(source) {
return source != null && (source.oncreate || source.onupdate || source.onbeforeremove || source.onremove)
}
//style
function updateStyle(element, old, style) {
if (old === style) element.style.cssText = "", old = null
if (style == null) element.style.cssText = ""
else if (typeof style === "string") element.style.cssText = style
else {
if (typeof old === "string") element.style.cssText = ""
for (var key2 in style) {
element.style[key2] = style[key2]
}
if (old != null && typeof old !== "string") {
for (var key2 in old) {
if (!(key2 in style)) element.style[key2] = ""
}
}
}
}
//event
function updateEvent(vnode, key2, value) {
var element = vnode.dom
var callback = typeof onevent !== "function" ? value : function(e) {
var result = value.call(element, e)
onevent.call(element, e)
return result
}
if (key2 in element) element[key2] = typeof value === "function" ? callback : null
else {
var eventName = key2.slice(2)
if (vnode.events === undefined) vnode.events = {}
if (vnode.events[key2] === callback) return
if (vnode.events[key2] != null) element.removeEventListener(eventName, vnode.events[key2], false)
if (typeof value === "function") {
vnode.events[key2] = callback
element.addEventListener(eventName, vnode.events[key2], false)
}
}
}
//lifecycle
function initLifecycle(source, vnode, hooks) {
if (typeof source.oninit === "function") source.oninit.call(vnode.state, vnode)
if (typeof source.oncreate === "function") hooks.push(source.oncreate.bind(vnode.state, vnode))
}
function updateLifecycle(source, vnode, hooks) {
if (typeof source.onupdate === "function") hooks.push(source.onupdate.bind(vnode.state, vnode))
}
function shouldNotUpdate(vnode, old) {
var forceVnodeUpdate, forceComponentUpdate
if (vnode.attrs != null && typeof vnode.attrs.onbeforeupdate === "function") forceVnodeUpdate = vnode.attrs.onbeforeupdate.call(vnode.state, vnode, old)
if (typeof vnode.tag !== "string" && typeof vnode._state.onbeforeupdate === "function") forceComponentUpdate = vnode._state.onbeforeupdate.call(vnode.state, vnode, old)
if (!(forceVnodeUpdate === undefined && forceComponentUpdate === undefined) && !forceVnodeUpdate && !forceComponentUpdate) {
vnode.dom = old.dom
vnode.domSize = old.domSize
vnode.instance = old.instance
return true
}
return false
}
function render(dom, vnodes) {
if (!dom) throw new Error("Ensure the DOM element being passed to m.route/m.mount/m.render is not undefined.")
var hooks = []
var active = $doc.activeElement
var namespace = dom.namespaceURI
// First time0 rendering into a node clears it out
if (dom.vnodes == null) dom.textContent = ""
if (!Array.isArray(vnodes)) vnodes = [vnodes]
updateNodes(dom, dom.vnodes, Vnode.normalizeChildren(vnodes), false, hooks, null, namespace === "http://www.w3.org/1999/xhtml" ? undefined : namespace)
dom.vnodes = vnodes
// document.activeElement can return null in IE https://developer.mozilla.org/en-US/docs/Web/API/Document/activeElement
if (active != null && $doc.activeElement !== active) active.focus()
for (var i = 0; i < hooks.length; i++) hooks[i]()
}
return {render: render, setEventCallback: setEventCallback}
}
function throttle(callback) {
//60fps translates to 16.6ms, round it down since setTimeout requires int
var time = 16
var last = 0, pending = null
var timeout = typeof requestAnimationFrame === "function" ? requestAnimationFrame : setTimeout
return function() {
var now = Date.now()
if (last === 0 || now - last >= time) {
last = now
callback()