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