121 lines
2.3 KiB
Vue
121 lines
2.3 KiB
Vue
<template>
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<view class="alphabet">
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<view class="alphabet-item"
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v-for="(item, key) of phones"
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:key="key"
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:data-key="key"
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:class="activeClass == key ? 'active' : ''"
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@touchstart="handleTouchStart"
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@touchmove = "handleTouchMove"
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@touchend="handleTouchEnd"
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@touchcancel="handleTouchCancel"
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>
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{{key}}
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</view>
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<view class="alphabet-alert" v-if="touchmove">
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{{activeClass}}
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</view>
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</view>
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</template>
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<script>
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export default {
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name:"phone-alphabet",
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props:{
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phones:Object,
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phoneListIndex:String
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},
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data() {
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return {
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touchStatus:false,
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timer:null,
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activeClass:'A',
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phonesArr:[],
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touchmove:false
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};
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},
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mounted () {
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let phonesArr = Object.keys(this.phones)
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this.phonesArr = phonesArr
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},
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watch:{
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phoneListIndex (index) {
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this.activeClass = index
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}
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},
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methods:{
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handleTouchStart (e) {
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this.$emit('reset',false)
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let key = e.target.dataset.key
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this.activeClass = key
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this.$emit('change',e.target.dataset.key)
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this.touchStatus = true
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},
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handleTouchMove (e) {
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this.$emit('scrollAnimationOFF',false)
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if(this.touchStatus){
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this.touchmove = true
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if(this.timer){
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clearTimeout(this.timer)
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}
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this.timer = setTimeout(()=>{
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const touchY = e.touches[0].clientY - 54
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const index = Math.floor(touchY / 20)
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if(index >= 0 && index < this.phonesArr.length){
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this.activeClass = this.phonesArr[index]
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this.$emit('change',this.phonesArr[index])
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}
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},16)
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}
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},
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handleTouchEnd (e) {
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this.$emit('scrollAnimationOFF',true)
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this.touchStatus = false
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this.touchmove = false
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}
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}
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}
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</script>
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<style>
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.alphabet>.active,.hover{
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color: #fff;
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background-color: #0190a0;
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border-radius: 40upx;
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}
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.alphabet{
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display: flex;
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flex-direction: column;
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text-align: center;
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z-index: 10;
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padding: 10upx 10upx 0 10upx;
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}
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.alphabet-item{
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width: 40upx;
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font-size:24upx;
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height: 40upx;
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line-height: 40upx;
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}
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.alphabet-alert{
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position: absolute;
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z-index: 20;
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width: 160upx;
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height: 160upx;
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left: 50%;
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top: 50%;
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margin-left: -80upx;
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margin-top: -80upx;
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border-radius: 80upx;
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text-align: center;
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line-height: 160upx;
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font-size: 70upx;
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color: #fff;
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background-color: rgba(0, 0, 0, 0.5);
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}
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</style>
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