src/directives/duplex/compact.js
import { avalon } from '../../seed/core'
import { duplexBeforeInit, duplexInit, duplexDiff, duplexBind, valueHijack, updateView } from './share'
import { updateDataEvents } from './updateDataEvents.compact'
import { updateModel } from './updateDataHandle'
avalon.directive('duplex', {
priority: 9999999,
beforeInit: duplexBeforeInit,
init: duplexInit,
diff: duplexDiff,
update: function (vdom, value) {
if (!this.dom) {
duplexBind.call(this, vdom, updateDataEvents)
}
//如果不支持input.value的Object.defineProperty的属性支持,
//需要通过轮询同步, chrome 42及以下版本需要这个hack
pollValue.call(this, avalon.msie, valueHijack)
//更新视图
updateView[this.dtype].call(this)
}
})
function pollValue(isIE, valueHijack) {
var dom = this.dom
if (this.isString
&& valueHijack
&& !isIE
&& !dom.valueHijack) {
dom.valueHijack = updateModel
var intervalID = setInterval(function () {
if (!avalon.contains(avalon.root, dom)) {
clearInterval(intervalID)
} else {
dom.valueHijack({ type: 'poll' })
}
}, 30)
return intervalID
}
}
avalon.__pollValue = pollValue //export to test
/* istanbul ignore if */
if (avalon.msie < 8) {
var oldUpdate = updateView.updateChecked
updateView.updateChecked = function (vdom, checked) {
var dom = vdom.dom
if (dom) {
setTimeout(function () {
oldUpdate(vdom, checked)
dom.firstCheckedIt = 1
}, dom.firstCheckedIt ? 31 : 16)
//IE6,7 checkbox, radio是使用defaultChecked控制选中状态,
//并且要先设置defaultChecked后设置checked
//并且必须设置延迟(因为必须插入DOM树才生效)
}
}
}