ReloadEffect.js
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import '../../less/reload-effect.less'
import {randomString} from '@/utils/util'
// 修改数据特效
export default {
props: {
vNode: null,
// 是否启用特效
effect: Boolean,
},
data() {
return {
// vNode: null,
innerEffect: false,
// 应付同时多个特效
effectIdx: 0,
effectList: [],
}
},
watch: {
vNode: {
deep: true,
immediate: true,
handler(vNode, old) {
this.innerEffect = this.effect
if (this.innerEffect && old != null) {
let topLayer = this.renderSpan(old, 'top')
this.effectList.push(topLayer)
}
},
},
},
methods: {
// 条件渲染内容 span
renderVNode() {
if (this.vNode == null) {
return null
}
let bottom = this.renderSpan(this.vNode, 'bottom')
// 启用了特效，并且有旧数据，就渲染特效顶层
if (this.innerEffect && this.effectList.length > 0) {
this.$emit('effect-begin')
// 1.4s 以后关闭特效
window.setTimeout(() => {
let item = this.effectList[this.effectIdx]
if (item && item.elm) {
// 特效结束后，展示先把 display 设为 none，而不是直接删掉该元素，
// 目的是为了防止页面重新渲染，导致动画重置
item.elm.style.display = 'none'
}
// 当所有的层级动画都结束时，再删掉所有元素
if (++this.effectIdx === this.effectList.length) {
this.innerEffect = false
this.effectIdx = 0
this.effectList = []
this.$emit('effect-end')
}
}, 1400)
return [this.effectList, bottom]
} else {
return bottom
}
},
// 渲染内容 span
renderSpan(vNode, layer) {
let options = {
key: layer + this.effectIdx + randomString(6),
class: ['j-vxe-reload-effect-span', `layer-${layer}`],
style: {},
}
if (layer === 'top') {
// 最新渲染的在下面
options.style['z-index'] = (9999 - this.effectIdx)
}
return this.$createElement('span', options, [vNode])
},
},
render(h) {
return h('div', {
class: ['j-vxe-reload-effect-box'],
}, [this.renderVNode()])
},
}