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92 lines
2.4 KiB
Vue
92 lines
2.4 KiB
Vue
<template>
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<!-- #ifdef APP-NVUE -->
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<header>
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<!-- #endif -->
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<view
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class="u-index-anchor u-border-bottom"
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:ref="`u-index-anchor-${text}`"
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:style="{
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height: $u.addUnit(height),
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backgroundColor: bgColor
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}"
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>
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<text
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class="u-index-anchor__text"
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:style="{
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fontSize: $u.addUnit(size),
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color: color
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}"
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>{{ text }}</text>
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</view>
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<!-- #ifdef APP-NVUE -->
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</header>
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<!-- #endif -->
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</template>
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<script>
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import props from './props.js';
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// #ifdef APP-NVUE
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const dom = uni.requireNativePlugin('dom')
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// #endif
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/**
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* IndexAnchor 列表锚点
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* @description
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* @tutorial https://uviewui.com/components/indexList.html
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* @property {String | Number} text 列表锚点文本内容
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* @property {String} color 列表锚点文字颜色 ( 默认 '#606266' )
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* @property {String | Number} size 列表锚点文字大小，单位默认px ( 默认 14 )
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* @property {String} bgColor 列表锚点背景颜色 ( 默认 '#dedede' )
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* @property {String | Number} height 列表锚点高度，单位默认px ( 默认 32 )
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* @example <u-index-anchor :text="indexList[index]"></u-index-anchor>
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*/
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export default {
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name: 'u-index-anchor',
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mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
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data() {
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return {
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}
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},
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mounted() {
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this.init()
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},
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methods: {
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init() {
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// 此处会活动父组件实例，并赋值给实例的parent属性
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const indexList = uni.$u.$parent.call(this, 'u-index-list')
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if (!indexList) {
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return uni.$u.error('u-index-anchor必须要搭配u-index-list组件使用')
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}
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// 将当前实例放入到u-index-list中
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indexList.anchors.push(this)
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const indexListItem = uni.$u.$parent.call(this, 'u-index-item')
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// #ifndef APP-NVUE
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// 只有在非nvue下，u-index-anchor才是嵌套在u-index-item中的
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if (!indexListItem) {
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return uni.$u.error('u-index-anchor必须要搭配u-index-item组件使用')
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}
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// 设置u-index-item的id为anchor的text标识符，因为非nvue下滚动列表需要依赖scroll-view滚动到元素的特性
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indexListItem.id = this.text.charCodeAt(0)
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// #endif
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}
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},
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}
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/components.scss";
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.u-index-anchor {
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position: sticky;
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top: 0;
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@include flex;
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align-items: center;
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padding-left: 15px;
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z-index: 1;
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&__text {
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@include flex;
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align-items: center;
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}
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}
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</style>
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