/
bean.js
662 lines (598 loc) · 27.4 KB
/
bean.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
!(function (name, context, definition) {
if (typeof module != 'undefined') module.exports = definition(name, context);
else if (typeof define == 'function' && typeof define.amd == 'object') define(definition);
else context[name] = definition(name, context);
}('bean', this, function (name, context) {
var win = window
, old = context[name]
, namespaceRegex = /[^\.]*(?=\..*)\.|.*/
, nameRegex = /\..*/
, addEvent = 'addEventListener'
, removeEvent = 'removeEventListener'
, doc = document || {}
, root = doc.documentElement || {}
, W3C_MODEL = root[addEvent]
, eventSupport = W3C_MODEL ? addEvent : 'attachEvent'
, ONE = {} // singleton for quick matching making add() do one()
, slice = Array.prototype.slice
, str2arr = function (s, d) { return s.split(d || ' ') }
, isString = function (o) { return typeof o == 'string' }
, isFunction = function (o) { return typeof o == 'function' }
, standardNativeEvents =
'click dblclick mouseup mousedown contextmenu ' + // mouse buttons
'mousewheel mousemultiwheel DOMMouseScroll ' + // mouse wheel
'mouseover mouseout mousemove selectstart selectend ' + // mouse movement
'keydown keypress keyup ' + // keyboard
'orientationchange ' + // mobile
'focus blur change reset select submit ' + // form elements
'load unload beforeunload resize move DOMContentLoaded ' + // window
'readystatechange message ' + // window
'error abort scroll ' // misc
// element.fireEvent('onXYZ'... is not forgiving if we try to fire an event
// that doesn't actually exist, so make sure we only do these on newer browsers
, w3cNativeEvents =
'show ' + // mouse buttons
'input invalid ' + // form elements
'touchstart touchmove touchend touchcancel ' + // touch
'gesturestart gesturechange gestureend ' + // gesture
'textinput' + // TextEvent
'readystatechange pageshow pagehide popstate ' + // window
'hashchange offline online ' + // window
'afterprint beforeprint ' + // printing
'dragstart dragenter dragover dragleave drag drop dragend ' + // dnd
'loadstart progress suspend emptied stalled loadmetadata ' + // media
'loadeddata canplay canplaythrough playing waiting seeking ' + // media
'seeked ended durationchange timeupdate play pause ratechange ' + // media
'volumechange cuechange ' + // media
'checking noupdate downloading cached updateready obsolete ' // appcache
, nativeEvents = (function (hash, events, i) {
for (i = 0; i < events.length; i++) events[i] && (hash[events[i]] = 1)
return hash
}({}, str2arr(standardNativeEvents + (W3C_MODEL ? w3cNativeEvents : ''))))
, customEvents = (function () {
var isAncestor = 'compareDocumentPosition' in root
? function (element, container) {
return container.compareDocumentPosition && (container.compareDocumentPosition(element) & 16) === 16
}
: 'contains' in root
? function (element, container) {
container = container.nodeType === 9 || container === window ? root : container
return container !== element && container.contains(element)
}
: function (element, container) {
while (element = element.parentNode) if (element === container) return 1
return 0
}
, check = function (event) {
var related = event.relatedTarget
return !related
? related == null
: (related !== this && related.prefix !== 'xul' && !/document/.test(this.toString())
&& !isAncestor(related, this))
}
return {
mouseenter: { base: 'mouseover', condition: check }
, mouseleave: { base: 'mouseout', condition: check }
, mousewheel: { base: /Firefox/.test(navigator.userAgent) ? 'DOMMouseScroll' : 'mousewheel' }
}
}())
, Event = (function () {
var commonProps = str2arr('altKey attrChange attrName bubbles cancelable ctrlKey currentTarget ' +
'detail eventPhase getModifierState isTrusted metaKey relatedNode relatedTarget shiftKey ' +
'srcElement target timeStamp type view which propertyName')
, mouseProps = commonProps.concat(str2arr('button buttons clientX clientY dataTransfer ' +
'fromElement offsetX offsetY pageX pageY screenX screenY toElement'))
, mouseWheelProps = mouseProps.concat(str2arr('wheelDelta wheelDeltaX wheelDeltaY wheelDeltaZ ' +
'axis')) // 'axis' is FF specific
, keyProps = commonProps.concat(str2arr('char charCode key keyCode keyIdentifier ' +
'keyLocation location'))
, textProps = commonProps.concat(str2arr('data'))
, touchProps = commonProps.concat(str2arr('touches targetTouches changedTouches scale rotation'))
, messageProps = commonProps.concat(str2arr('data origin source'))
, stateProps = commonProps.concat(str2arr('state'))
, overOutRegex = /over|out/
// some event types need special handling and some need special properties, do that all here
, typeFixers = [
{ // key events
reg: /key/i
, fix: function (event, newEvent) {
newEvent.keyCode = event.which || event.keyCode
return keyProps
}
}
, { // mouse events
reg: /click|mouse(?!(.*wheel|scroll))|menu|drag|drop/i
, fix: function (event, newEvent, type) {
newEvent.rightClick = event.which === 3 || event.button === 2
newEvent.pos = { x: 0, y: 0 }
if (event.pageX || event.pageY) {
newEvent.clientX = event.pageX
newEvent.clientY = event.pageY
} else if (event.clientX || event.clientY) {
newEvent.clientX = event.clientX + doc.body.scrollLeft + root.scrollLeft
newEvent.clientY = event.clientY + doc.body.scrollTop + root.scrollTop
}
if (overOutRegex.test(type)) {
newEvent.relatedTarget = event.relatedTarget
|| event[(type == 'mouseover' ? 'from' : 'to') + 'Element']
}
return mouseProps
}
}
, { // mouse wheel events
reg: /mouse.*(wheel|scroll)/i
, fix: function () { return mouseWheelProps }
}
, { // TextEvent
reg: /^text/i
, fix: function () { return textProps }
}
, { // touch and gesture events
reg: /^touch|^gesture/i
, fix: function () { return touchProps }
}
, { // message events
reg: /^message$/i
, fix: function () { return messageProps }
}
, { // popstate events
reg: /^popstate$/i
, fix: function () { return stateProps }
}
, { // everything else
reg: /.*/
, fix: function () { return commonProps }
}
]
, typeFixerMap = {} // used to map event types to fixer functions (above), a basic cache mechanism
, Event = function (event, element, isNative) {
if (!arguments.length) return
event = event || ((element.ownerDocument || element.document || element).parentWindow || win).event
this.originalEvent = event
this.isNative = isNative
this.isBean = true
if (!event) return
var type = event.type
, target = event.target || event.srcElement
, i, l, p, props, fixer
this.target = target && target.nodeType === 3 ? target.parentNode : target
if (isNative) { // we only need basic augmentation on custom events, the rest expensive & pointless
fixer = typeFixerMap[type]
if (!fixer) { // haven't encountered this event type before, map a fixer function for it
for (i = 0, l = typeFixers.length; i < l; i++) {
if (typeFixers[i].reg.test(type)) { // guaranteed to match at least one, last is .*
typeFixerMap[type] = fixer = typeFixers[i].fix
break
}
}
}
props = fixer(event, this, type)
for (i = props.length; i--;) {
if (!((p = props[i]) in this) && p in event) this[p] = event[p]
}
}
}
Event.prototype.preventDefault = function () {
if (this.originalEvent.preventDefault) this.originalEvent.preventDefault()
else this.originalEvent.returnValue = false
}
Event.prototype.stopPropagation = function () {
if (this.originalEvent.stopPropagation) this.originalEvent.stopPropagation()
else this.originalEvent.cancelBubble = true
}
Event.prototype.stopImmediatePropagation = function () {
if (this.originalEvent.stopImmediatePropagation) this.originalEvent.stopImmediatePropagation()
}
Event.prototype.stop = function () {
this.preventDefault()
this.stopPropagation()
this.stopped = true
}
Event.prototype.clone = function (currentTarget) {
var ne = new Event(), p
for (p in this) ne[p] = this[p]
ne.currentTarget = currentTarget
return ne
}
return Event
}())
// if we're in old IE we can't do onpropertychange on doc or win so we use doc.documentElement for both
, targetElement = function (element, isNative) {
return !W3C_MODEL && !isNative && (element === doc || element === win) ? root : element
}
// we use one of these per listener, of any type
, RegEntry = (function () {
var wrappedHandler = function (element, fn, condition, args) {
var call = function (event, eargs) {
return fn.apply(element, args ? slice.call(eargs, event ? 0 : 1).concat(args) : eargs)
}
, findTarget = function (event, eventElement) {
return fn.__beanDel ? fn.__beanDel.ft(event.target, element) : eventElement
}
, handler = condition
? function (event) {
var target = findTarget(event, this) // deleated event
if (condition.apply(target, arguments)) {
if (event) event.currentTarget = target
return call(event, arguments)
}
}
: function (event) {
if (fn.__beanDel) event = event.clone(findTarget(event)) // delegated event, fix the fix
return call(event, arguments)
}
handler.__beanDel = fn.__beanDel
return handler
}
, RegEntry = function (element, type, handler, original, namespaces, args, root) {
var customType = customEvents[type]
, isNative
if (type == 'unload') {
// self clean-up
handler = once(removeListener, element, type, handler, original)
}
if (customType) {
if (customType.condition) {
handler = wrappedHandler(element, handler, customType.condition, args)
}
type = customType.base || type
}
this.isNative = isNative = nativeEvents[type] && !!element[eventSupport]
this.customType = !W3C_MODEL && !isNative && type
this.element = element
this.type = type
this.original = original
this.namespaces = namespaces
this.eventType = W3C_MODEL || isNative ? type : 'propertychange'
this.target = targetElement(element, isNative)
this[eventSupport] = !!this.target[eventSupport]
this.root = root
this.handler = wrappedHandler(element, handler, null, args)
}
// given a list of namespaces, is our entry in any of them?
RegEntry.prototype.inNamespaces = function (checkNamespaces) {
var i, j, c = 0
if (!checkNamespaces) return true
if (!this.namespaces) return false
for (i = checkNamespaces.length; i--;) {
for (j = this.namespaces.length; j--;) {
if (checkNamespaces[i] == this.namespaces[j]) c++
}
}
return checkNamespaces.length === c
}
// match by element, original fn (opt), handler fn (opt)
RegEntry.prototype.matches = function (checkElement, checkOriginal, checkHandler) {
return this.element === checkElement &&
(!checkOriginal || this.original === checkOriginal) &&
(!checkHandler || this.handler === checkHandler)
}
return RegEntry
}())
, registry = (function () {
// our map stores arrays by event type, just because it's better than storing
// everything in a single array. uses '$' as a prefix for the keys for safety
var map = {}
// generic functional search of our registry for matching listeners,
// `fn` returns false to break out of the loop
, forAll = function (element, type, original, handler, root, fn) {
var pfx = root ? 'r' : '$'
if (!type || type == '*') {
// search the whole registry
for (var t in map) {
if (t.charAt(0) == pfx) {
forAll(element, t.substr(1), original, handler, root, fn)
}
}
} else {
var i = 0, l, list = map[pfx + type], all = element == '*'
if (!list) return
for (l = list.length; i < l; i++) {
if ((all || list[i].matches(element, original, handler)) && !fn(list[i], list, i, type)) return
}
}
}
, has = function (element, type, original, root) {
// we're not using forAll here simply because it's a bit slower and this
// needs to be fast
var i, list = map[(root ? 'r' : '$') + type]
if (list) {
for (i = list.length; i--;) {
if (!list[i].root && list[i].matches(element, original, null)) return true
}
}
return false
}
, get = function (element, type, original, root) {
var entries = []
forAll(element, type, original, null, root, function (entry) {
return entries.push(entry)
})
return entries
}
, put = function (entry) {
var has = !entry.root && !this.has(entry.element, entry.type, null, false)
, key = (entry.root ? 'r' : '$') + entry.type
;(map[key] || (map[key] = [])).push(entry)
return has
}
, del = function (entry) {
forAll(entry.element, entry.type, null, entry.handler, entry.root, function (entry, list, i) {
list.splice(i, 1)
entry.removed = true
if (list.length === 0) delete map[(entry.root ? 'r' : '$') + entry.type]
return false
})
}
// dump all entries, used for onunload
, entries = function () {
var t, entries = []
for (t in map) {
if (t.charAt(0) == '$') entries = entries.concat(map[t])
}
return entries
}
return { has: has, get: get, put: put, del: del, entries: entries }
}())
, selectorEngine
, setSelectorEngine = function (e) {
if (!arguments.length) {
selectorEngine = doc.querySelectorAll
? function (s, r) {
return r.querySelectorAll(s)
}
: function () {
throw new Error('Bean: No selector engine installed') // eeek
}
} else {
selectorEngine = e
}
}
, rootListener = function (event, type) {
if (!W3C_MODEL && type && event && event.propertyName != '_on' + type) return
var listeners = registry.get(this, type || event.type, null, false)
, l = listeners.length
, i = 0
event = new Event(event, this, true)
if (type) event.type = type
for (; i < l; i++) {
if (!listeners[i].removed) listeners[i].handler.call(this, event)
}
}
// add and remove listeners to DOM elements
, listener = W3C_MODEL
? function (element, type, add) {
element[add ? addEvent : removeEvent](type, rootListener, false)
}
: function (element, type, add, custom) {
var entry
if (add) {
registry.put(entry = new RegEntry(
element
, custom || type
, function (event) { // handler
rootListener.call(element, event, custom)
}
, rootListener
, null
, null
, true // is root
))
if (custom && element['_on' + custom] == null) element['_on' + custom] = 0
entry.target.attachEvent('on' + entry.eventType, entry.handler)
} else {
entry = registry.get(element, custom || type, rootListener, true)[0]
if (entry) {
entry.target.detachEvent('on' + entry.eventType, entry.handler)
registry.del(entry)
}
}
}
, once = function (rm, element, type, fn, originalFn) {
// wrap the handler in a handler that does a remove as well
return function () {
fn.apply(this, arguments)
rm(element, type, originalFn)
}
}
, removeListener = function (element, orgType, handler, namespaces) {
var type = orgType && orgType.replace(nameRegex, '')
, handlers = registry.get(element, type, null, false)
, removed = {}
, i, l
for (i = 0, l = handlers.length; i < l; i++) {
if ((!handler || handlers[i].original === handler) && handlers[i].inNamespaces(namespaces)) {
// TODO: this is problematic, we have a registry.get() and registry.del() that
// both do registry searches so we waste cycles doing this. Needs to be rolled into
// a single registry.forAll(fn) that removes while finding, but the catch is that
// we'll be splicing the arrays that we're iterating over. Needs extra tests to
// make sure we don't screw it up. @rvagg
registry.del(handlers[i])
if (!removed[handlers[i].eventType] && handlers[i][eventSupport])
removed[handlers[i].eventType] = { t: handlers[i].eventType, c: handlers[i].type }
}
}
for (i in removed) {
if (!registry.has(element, removed[i].t, null, false)) {
// last listener of this type, remove the rootListener
listener(element, removed[i].t, false, removed[i].c)
}
}
}
, delegate = function (selector, fn) {
//TODO: findTarget (therefore $) is called twice, once for match and once for
// setting e.currentTarget, fix this so it's only needed once
var findTarget = function (target, root) {
var i, array = isString(selector) ? selectorEngine(selector, root) : selector
for (; target && target !== root; target = target.parentNode) {
for (i = array.length; i--;) {
if (array[i] === target) return target
}
}
}
, handler = function (e) {
var match = findTarget(e.target, this)
if (match) fn.apply(match, arguments)
}
handler.__beanDel = {
ft : findTarget // attach it here for customEvents to use too
, selector : selector
}
return handler
}
, off = function (element, typeSpec, fn) {
var isTypeStr = isString(typeSpec)
, k, type, namespaces, i
if (isTypeStr && typeSpec.indexOf(' ') > 0) {
// off(el, 't1 t2 t3', fn) or off(el, 't1 t2 t3')
typeSpec = str2arr(typeSpec)
for (i = typeSpec.length; i--;)
off(element, typeSpec[i], fn)
return element
}
type = isTypeStr && typeSpec.replace(nameRegex, '')
if (type && customEvents[type]) type = customEvents[type].type
if (!typeSpec || isTypeStr) {
// off(el) or off(el, t1.ns) or off(el, .ns) or off(el, .ns1.ns2.ns3)
if (namespaces = isTypeStr && typeSpec.replace(namespaceRegex, '')) namespaces = str2arr(namespaces, '.')
removeListener(element, type, fn, namespaces)
} else if (isFunction(typeSpec)) {
// off(el, fn)
removeListener(element, null, typeSpec)
} else {
// off(el, { t1: fn1, t2, fn2 })
for (k in typeSpec) {
if (typeSpec.hasOwnProperty(k)) off(element, k, typeSpec[k])
}
}
return element
}
, on = function(element, events, selector, fn) {
var originalFn, type, types, i, args, entry, first
if (selector === undefined && typeof events == 'object') {
//TODO: this can't handle delegated events
for (type in events) {
if (events.hasOwnProperty(type)) {
on.call(this, element, type, events[type])
}
}
return
}
if (!isFunction(selector)) {
// delegated event
originalFn = fn
args = slice.call(arguments, 4)
fn = delegate(selector, originalFn, selectorEngine)
} else {
args = slice.call(arguments, 3)
fn = originalFn = selector
}
types = str2arr(events)
// special case for one()
if (this === ONE) {
fn = once(off, element, events, fn, originalFn)
}
for (i = types.length; i--;) {
first = registry.put(entry = new RegEntry(
element
, types[i].replace(nameRegex, '') // event type
, fn
, originalFn
, str2arr(types[i].replace(namespaceRegex, ''), '.') // namespaces
, args
, false // not root
))
if (entry[eventSupport] && first) {
// first event of this type on this element, add root listener
listener(element, entry.eventType, true, entry.customType)
}
}
return element
}
// deprecated, has delegate-selector in the wrong position, kept (for now) for backward-compatibility
, add = function (element, events, fn, delfn) {
return on.apply(
null
, !isString(fn)
? slice.call(arguments)
: [ element, fn, events, delfn ].concat(arguments.length > 3 ? slice.call(arguments, 5) : [])
)
}
, one = function () {
return on.apply(ONE, arguments)
}
, fireListener = W3C_MODEL ? function (isNative, type, element) {
var evt = doc.createEvent(isNative ? 'HTMLEvents' : 'UIEvents')
evt[isNative ? 'initEvent' : 'initUIEvent'](type, true, true, win, 1)
element.dispatchEvent(evt)
} : function (isNative, type, element) {
element = targetElement(element, isNative)
// if not-native then we're using onpropertychange so we just increment a custom property
isNative ? element.fireEvent('on' + type, doc.createEventObject()) : element['_on' + type]++
}
, fire = function (element, type, args) {
var types = str2arr(type)
, i, j, l, names, handlers
for (i = types.length; i--;) {
type = types[i].replace(nameRegex, '')
if (names = types[i].replace(namespaceRegex, '')) names = str2arr(names, '.')
if (!names && !args && element[eventSupport]) {
fireListener(nativeEvents[type], type, element)
} else {
// non-native event, either because of a namespace, arguments or a non DOM element
// iterate over all listeners and manually 'fire'
handlers = registry.get(element, type, null, false)
args = [false].concat(args)
for (j = 0, l = handlers.length; j < l; j++) {
if (!handlers[j].root && handlers[j].inNamespaces(names)) {
handlers[j].handler.apply(element, args)
}
}
}
}
return element
}
, clone = function (element, from, type) {
var handlers = registry.get(from, type, null, false)
, l = handlers.length
, i = 0
, args, beanDel
for (; i < l; i++) {
if (!handlers[i].root && handlers[i].original) {
args = [ element, handlers[i].type ]
if (beanDel = handlers[i].handler.__beanDel) args.push(beanDel.selector)
args.push(handlers[i].original)
on.apply(null, args)
}
}
return element
}
, bean = {
on : on
, add : add
, one : one
, off : off
, remove : off
, clone : clone
, fire : fire
, setSelectorEngine : setSelectorEngine
, noConflict : function () {
context[name] = old
return this
}
}
if (win.attachEvent) {
// for IE, clean up on unload to avoid leaks
var cleanup = function () {
var i, entries = registry.entries()
for (i in entries) {
if (entries[i].type && entries[i].type !== 'unload') off(entries[i].element, entries[i].type)
}
win.detachEvent('onunload', cleanup)
win.CollectGarbage && win.CollectGarbage()
}
win.attachEvent('onunload', cleanup)
}
setSelectorEngine()
return bean
}));