u-index-anchor

<template>
  <view class="u-index-anchor-wrapper" :id="$u.guid()" :style="[wrapperStyle]">
    <view
      class="u-index-anchor"
      :class="[active ? 'u-index-anchor--active' : '']"
      :style="[customAnchorStyle]"
    >
      <slot v-if="useSlot" />
      <block v-else>
        <text>{{ index }}</text>
      </block>
    </view>
  </view>
</template>

<script>
/**
 * indexAnchor 索引列表锚点
 * @description 通过折叠面板收纳内容区域,搭配<u-index-anchor>使用
 * @tutorial https://www.uviewui.com/components/indexList.html#indexanchor-props
 * @property {Boolean} use-slot 是否使用自定义内容的插槽（默认false）
 * @property {String Number} index 索引字符，如果定义了use-slot，此参数自动失效
 * @property {Object} custStyle 自定义样式，对象形式，如"{color: 'red'}"
 * @event {Function} default 锚点位置显示内容，默认为索引字符
 * @example <u-index-anchor :index="item" />
 */
export default {
  name: 'u-index-anchor',
  props: {
    useSlot: {
      type: Boolean,
      default: false
    },
    index: {
      type: String,
      default: ''
    },
    customStyle: {
      type: Object,
      default() {
        return {}
      }
    }
  },
  data() {
    return {
      active: false,
      wrapperStyle: {},
      anchorStyle: {}
    }
  },
  inject: ['UIndexList'],
  mounted() {
    this.UIndexList.children.push(this)
    this.UIndexList.updateData()
  },
  computed: {
    customAnchorStyle() {
      return Object.assign(this.anchorStyle, this.customStyle)
    }
  }
}
</script>

<style lang="scss" scoped>
@import '../../libs/css/style.components.scss';

.u-index-anchor {
  box-sizing: border-box;
  padding: 14rpx 24rpx;
  color: #606266;
  width: 100%;
  font-weight: 500;
  font-size: 28rpx;
  line-height: 1.2;
  background-color: rgb(245, 245, 245);
}

.u-index-anchor--active {
  right: 0;
  left: 0;
  color: #2979ff;
  background-color: #fff;
}
</style>