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an elegant efficient express mvvm framework
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<a href="../index.html">all files</a> / <a href="index.html">vmodel/</a> ProxyArray.js
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<span class="cline-any cline-yes">1×</span></td><td class="text"><pre class="prettyprint lang-js">import { avalon, ap, platform, modern, isObject } from '../seed/core'
import { Mutation } from './Mutation'
var _splice = ap.splice
var __array__ = {
set: function(index, val) {
if (((index >>> 0) === index) && this[index] !== val) {
if (index > this.length) {
throw Error(index + 'set方法的第一个参数不能大于原数组长度')
}
this.splice(index, 1, val)
}
},
toJSON: function() {
//为了解决IE6-8的解决,通过此方法显式地求取数组的$model
return this.$model = platform.toJson(this)
},
contains: function(el) { //判定是否包含
return this.indexOf(el) !== -1
},
ensure: function(el) {
if (!this.contains(el)) { //只有不存在才push
this.push(el)
return true
}
return false
},
pushArray: function(arr) {
return this.push.apply(this, arr)
},
remove: function(el) { //移除第一个等于给定值的元素
return this.removeAt(this.indexOf(el))
},
removeAt: function(index) { //移除指定索引上的元素
if ((index >>> 0) === index) {
return this.splice(index, 1)
}
return []
},
clear: function() {
this.removeAll()
return this
},
removeAll: function(all) { //移除N个元素
var size = this.length
var eliminate = Array.isArray(all) ?
function(el) {
return all.indexOf(el) !== -1
} : typeof all === 'function' ?
all : false
if (eliminate) {
for (var i = this.length - 1; i >= 0; i--) {
if (eliminate(this[i], i)) {
_splice.call(this, i, 1)
}
}
} else {
_splice.call(this, 0, this.length)
}
this.toJSON()
this.$events.__dep__.notify()
}
}
export function hijackMethods(array) {
for (var i in __array__) {
platform.hideProperty(array, i, __array__[i])
}
}
var __method__ = ['push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse']
__method__.forEach(function(method) {
var original = ap[method]
__array__[method] = function() {
// 继续尝试劫持数组元素的属性
var core = this.$events
var args = platform.listFactory(arguments, true, core.__dep__)
var result = original.apply(this, args)
this.toJSON()
core.__dep__.notify(method)
return result
}
})
export function listFactory(array, stop, dd) {
if (!stop) {
hijackMethods(array)
<span class="missing-if-branch" title="else path not taken" >E</span>if (modern) {
Object.defineProperty(array, '$model', platform.modelAccessor)
}
platform.hideProperty(array, '$hashcode', avalon.makeHashCode('$'))
platform.hideProperty(array, '$events', { __dep__: dd || <span class="branch-1 cbranch-no" title="branch not covered" >new Mutation </span>})
}
var _dd = array.$events && array.$events.__dep__
for (var i = 0, n = array.length; i < n; i++) {
var item = array[i]
if (isObject(item)) {
array[i] = platform.createProxy(item, _dd)
}
}
return array
}
platform.listFactory = listFactory</pre></td></tr>
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