avalon2
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an elegant efficient express mvvm framework
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<h1>
<a href="../../index.html">all files</a> / <a href="index.html">dom/event/</a> share.js
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<div class='fl pad1y space-right2'>
<span class="strong">98.68% </span>
<span class="quiet">Statements</span>
<span class='fraction'>149/151</span>
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<div class='fl pad1y space-right2'>
<span class="strong">91.38% </span>
<span class="quiet">Branches</span>
<span class='fraction'>106/116</span>
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<div class='fl pad1y space-right2'>
<span class="strong">95.65% </span>
<span class="quiet">Functions</span>
<span class='fraction'>22/23</span>
</div>
<div class='fl pad1y space-right2'>
<span class="strong">98.68% </span>
<span class="quiet">Lines</span>
<span class='fraction'>149/151</span>
</div>
<div class='fl pad1y'>
<span class="strong">30 statements, 6 functions, 19 branches</span>
<span class="quiet">Ignored</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { avalon, _slice, eventHooks, modern, window, document, root, getShortID } from '../../seed/core'
import { canBubbleUp } from './canBubbleUp'
/* istanbul ignore if */
var hackSafari = avalon.modern && document.ontouchstart
//添加fn.bind, fn.unbind, bind, unbind
avalon.fn.bind = function(type, fn, phase) {
<span class="missing-if-branch" title="else path not taken" >E</span>if (this[0]) { //此方法不会链
return avalon.bind(this[0], type, fn, phase)
}
}
avalon.fn.unbind = function(type, fn, phase) {
<span class="missing-if-branch" title="else path not taken" >E</span>if (this[0]) {
var args = _slice.call(arguments)
args.unshift(this[0])
avalon.unbind.apply(0, args)
}
return this
}
/*绑定事件*/
avalon.bind = function(elem, type, fn) {
<span class="missing-if-branch" title="else path not taken" >E</span>if (elem.nodeType === 1) {
var value = elem.getAttribute('avalon-events') || ''
//如果是使用ms-on-*绑定的回调,其uuid格式为e12122324,
//如果是使用bind方法绑定的回调,其uuid格式为_12
var uuid = getShortID(fn)
var hook = eventHooks[type]
/* istanbul ignore if */
<span class="skip-if-branch" title="if path not taken" >I</span>if (type === 'click' && hackSafari) {
<span class="cstat-skip" title="statement not covered" > elem.addEventListener('click', avalon.noop)</span>
}
/* istanbul ignore if */
if (hook) {
type = hook.type || <span class="branch-1 cbranch-skip" title="branch not covered" >type</span>
<span class="skip-if-branch" title="if path not taken" >I</span>if (hook.fix) {
<span class="cstat-skip" title="statement not covered" > fn = hook.fix(elem, fn)</span>
<span class="cstat-skip" title="statement not covered" > fn.uuid = uuid</span>
}
}
var key = type + ':' + uuid
avalon.eventListeners[fn.uuid] = fn
/* istanbul ignore if */
if (value.indexOf(type + ':') === -1) { //同一种事件只绑定一次
if (canBubbleUp[type] || (avalon.modern && focusBlur[type])) {
delegateEvent(type)
} else {
avalon._nativeBind(elem, type, dispatch)
}
}
var keys = value.split(',')
/* istanbul ignore if */
if (keys[0] === '') {
keys.shift()
}
if (keys.indexOf(key) === -1) {
keys.push(key)
setEventId(elem, keys.join(','))
//将令牌放进avalon-events属性中
}
} else {
/* istanbul ignore next */
<span class="cstat-skip" title="statement not covered" > avalon._nativeBind(elem, type, fn)</span>
}
return fn //兼容之前的版本
}
function setEventId(node, value) {
node.setAttribute('avalon-events', value)
}
/* istanbul ignore next */
avalon.unbind = function(elem, type, fn) {
<span class="skip-if-branch" title="else path not taken" >E</span>if (elem.nodeType === 1) {
var value = elem.getAttribute('avalon-events') || <span class="branch-1 cbranch-skip" title="branch not covered" >''</span>
switch (arguments.length) {
<span class="branch-0 cbranch-skip" title="branch not covered" > case 1:</span>
<span class="cstat-skip" title="statement not covered" > avalon._nativeUnBind(elem, type, dispatch)</span>
<span class="cstat-skip" title="statement not covered" > elem.removeAttribute('avalon-events')</span>
<span class="cstat-skip" title="statement not covered" > break</span>
case 2:
value = value.split(',').filter(function(str) {
return str.indexOf(type + ':') === -1
}).join(',')
setEventId(elem, value)
break
<span class="branch-2 cbranch-skip" title="branch not covered" > default:</span>
<span class="cstat-skip" title="statement not covered" > var search = type + ':' + fn.uuid</span>
<span class="cstat-skip" title="statement not covered" > value = value.split(',').filter(<span class="fstat-skip" title="function not covered" >function(str) {</span></span>
<span class="cstat-skip" title="statement not covered" > return str !== search</span>
}).join(',')
<span class="cstat-skip" title="statement not covered" > setEventId(elem, value)</span>
<span class="cstat-skip" title="statement not covered" > delete avalon.eventListeners[fn.uuid]</span>
<span class="cstat-skip" title="statement not covered" > break</span>
}
} else {
<span class="cstat-skip" title="statement not covered" > avalon._nativeUnBind(elem, type, fn)</span>
}
}
var typeRegExp = {}
function collectHandlers(elem, type, handlers) {
var value = elem.getAttribute('avalon-events')
if (value && (elem.disabled !== true || <span class="branch-2 cbranch-no" title="branch not covered" >type !== 'click')</span>) {
var uuids = []
var reg = typeRegExp[type] || (typeRegExp[type] = new RegExp("\\b" + type + '\\:([^,\\s]+)', 'g'))
value.replace(reg, function(a, b) {
uuids.push(b)
return a
})
if (uuids.length) {
handlers.push({
elem: elem,
uuids: uuids
})
}
}
elem = elem.parentNode
var g = avalon.gestureEvents || {}
if (elem && elem.getAttribute && (canBubbleUp[type] || g[type])) {
collectHandlers(elem, type, handlers)
}
}
var rhandleHasVm = /^e/
function dispatch(event) {
event = new avEvent(event)
var type = event.type
var elem = event.target
var handlers = []
collectHandlers(elem, type, handlers)
var i = 0,
j, uuid, handler
while ((handler = handlers[i++]) && !event.cancelBubble) {
var host = event.currentTarget = handler.elem
j = 0
while ((uuid = handler.uuids[j++])) {
<span class="missing-if-branch" title="if path not taken" >I</span>if (event.stopImmediate) {
<span class="cstat-no" title="statement not covered" > break</span>
}
var fn = avalon.eventListeners[uuid]
<span class="missing-if-branch" title="else path not taken" >E</span>if (fn) {
var vm = rhandleHasVm.test(uuid) ? handler.elem._ms_context_ : 0
<span class="missing-if-branch" title="if path not taken" >I</span>if (vm && vm.$hashcode === false) {
<span class="cstat-no" title="statement not covered" > return avalon.unbind(elem, type, fn)</span>
}
var ret = fn.call(vm || elem, event)
if (ret === false) {
event.preventDefault()
event.stopPropagation()
}
}
}
}
}
var focusBlur = {
focus: true,
blur: true
}
function delegateEvent(type) {
var value = root.getAttribute('delegate-events') || ''
if (value.indexOf(type) === -1) {
//IE6-8会多次绑定同种类型的同一个函数,其他游览器不会
var arr = value.match(avalon.rword) || []
arr.push(type)
root.setAttribute('delegate-events', arr.join(','))
avalon._nativeBind(root, type, dispatch, !!focusBlur[type])
}
}
var eventProto = {
webkitMovementY:1,
webkitMovementX: 1,
keyLocation:1,
fixEvent: <span class="fstat-no" title="function not covered" >function () {</span> },
preventDefault: function () {
var e = this.originalEvent || <span class="branch-1 cbranch-no" title="branch not covered" >{}</span>
e.returnValue = this.returnValue = false
if (modern && e.preventDefault) {
e.preventDefault()
}
},
stopPropagation: function () {
var e = this.originalEvent || <span class="branch-1 cbranch-no" title="branch not covered" >{}</span>
e.cancelBubble = this.cancelBubble = true
if (modern && e.stopPropagation) {
e.stopPropagation()
}
},
stopImmediatePropagation: function () {
this.stopPropagation()
this.stopImmediate = true
},
toString: function () {
return '[object Event]'//#1619
}
}
export function avEvent(event) {
if (event.originalEvent) {
return event
}
for (var i in event) {
if (!eventProto[i]) {
this[i] = event[i]
}
}
if (!this.target) {
this.target = event.srcElement
}
var target = this.target
this.fixEvent()
this.timeStamp = new Date() - 0
this.originalEvent = event
}
avEvent.prototype = eventProto
//针对firefox, chrome修正mouseenter, mouseleave
/* istanbul ignore if */
<span class="skip-if-branch" title="if path not taken" >I</span>if (!('onmouseenter' in root)) {
<span class="cstat-skip" title="statement not covered" > avalon.each({</span>
mouseenter: 'mouseover',
mouseleave: 'mouseout'
}, <span class="fstat-skip" title="function not covered" >function(origType, fixType) {</span>
<span class="cstat-skip" title="statement not covered" > eventHooks[origType] = {</span>
type: fixType,
fix: <span class="fstat-skip" title="function not covered" >function(elem, fn) {</span>
<span class="cstat-skip" title="statement not covered" > return <span class="fstat-skip" title="function not covered" >function(e) {</span></span>
<span class="cstat-skip" title="statement not covered" > var t = e.relatedTarget</span>
<span class="cstat-skip" title="statement not covered" > if (!t || (t !== elem && !(elem.compareDocumentPosition(t) & 16))) {</span>
<span class="cstat-skip" title="statement not covered" > delete e.type</span>
<span class="cstat-skip" title="statement not covered" > e.type = origType</span>
<span class="cstat-skip" title="statement not covered" > return fn.apply(this, arguments)</span>
}
}
}
}
})
}
//针对IE9+, w3c修正animationend
avalon.each({
AnimationEvent: 'animationend',
WebKitAnimationEvent: 'webkitAnimationEnd'
}, function(construct, fixType) {
if (window[construct] && !eventHooks.animationend) {
eventHooks.animationend = {
type: fixType
}
}
})
/* istanbul ignore if */
<span class="missing-if-branch" title="else path not taken" >E</span>if (!("onmousewheel" in document)) {
/* IE6-11 chrome mousewheel wheelDetla 下 -120 上 120
firefox DOMMouseScroll detail 下3 上-3
firefox wheel detlaY 下3 上-3
IE9-11 wheel deltaY 下40 上-40
chrome wheel deltaY 下100 上-100 */
var fixWheelType = document.onwheel !== void 0 ? 'wheel' : <span class="branch-1 cbranch-skip" title="branch not covered" >'DOMMouseScroll'</span>
var fixWheelDelta = fixWheelType === 'wheel' ? 'deltaY' : <span class="branch-1 cbranch-skip" title="branch not covered" >'detail'</span>
eventHooks.mousewheel = {
type: fixWheelType,
fix: <span class="fstat-skip" title="function not covered" >function(elem, fn) {</span>
<span class="cstat-skip" title="statement not covered" > return <span class="fstat-skip" title="function not covered" >function(e) {</span></span>
<span class="cstat-skip" title="statement not covered" > var delta = e[fixWheelDelta] > 0 ? -120 : 120</span>
<span class="cstat-skip" title="statement not covered" > e.wheelDelta = ~~elem._ms_wheel_ + delta</span>
<span class="cstat-skip" title="statement not covered" > elem._ms_wheel_ = e.wheelDeltaY = e.wheelDelta</span>
<span class="cstat-skip" title="statement not covered" > e.wheelDeltaX = 0</span>
<span class="cstat-skip" title="statement not covered" > if (Object.defineProperty) {</span>
<span class="cstat-skip" title="statement not covered" > Object.defineProperty(e, 'type', {</span>
value: 'mousewheel'
})
}
<span class="cstat-skip" title="statement not covered" > return fn.apply(this, arguments)</span>
}
}
}
}</pre></td></tr>
</table></pre>
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