kuailelunwen_new_houtai/src/components/SetLeftMenu.vue

<template>
  <aside class="sidebar">
    <ul>
      <li v-for="(item, index) in menuList" :key="item.path">
        <div :class="[$route.path == item.path ? 'active' : '', 'flex', $route.path == item.path ? curIndex = index : '']"
          @click="gotoPath(item.path)">
          <img v-if="$route.path == item.path" :src="item.imgActive" alt="">
          <img v-else :src="item.img" alt="">
          {{ item.name }}
        </div>
        <p :class="[$route.path != item.path ? 'not-point' : '', 'flex', activeFloor == item1.desc ? 'curActive' : '']"
          v-for="(item1) in item.list" @click="setActiveCur(item1.desc)" :key="item1.name">{{ item1.name }}</p>

      </li>
    </ul>
  </aside>
</template>

<script>
// import {setHighActive} from '@/utils/common';

export default {
  name: 'Sidebar',
  props: {
    menuList: {
      type: Array,
      required: true
    },
    // activeFloor:{
    //   type:String
    // },
    // curIndex:{
    //   type:Number
    // }


  },
  data() {
    return {
      activeFloor: null,
      curIndex: 0,
      scrollLock: false,
     
    }
  },
  mounted() {
    console.log(this.curIndex,'this.curIndex');
    this.activeFloor = this.menuList[this.curIndex]['list'][0]['desc'];
    this.calculateFloorOffsets();
    this.$nextTick(() => {
      // console.log(this.$parent.$refs.scrollContainer, 'this.$refs.scrollContainer--');
    })
    this.$parent.$refs.scrollContainer.addEventListener('scroll', this.handleScroll);
  },
  created() {
    // console.log(this.$parent.$refs.scrollContainer,'this.$refs.sc--rollContainer--');
  },
  beforeDestroy() {
    this.$parent.$refs.scrollContainer.removeEventListener('scroll', this.handleScroll);
  },
  methods: {
    calculateFloorOffsets() {
      this.menuList.forEach(item => {
        item.list.forEach(every => {
          const el = document.getElementById(every.desc);
          if (el) {
            every.offsetTop = el.offsetTop;
          }
        })
      });
    },
    handleScroll() {
      if (this.scrollLock) return
      const scrollContainer = this.$parent.$refs.scrollContainer;
      const scrollHeight = scrollContainer.scrollTop;
      let activeFloor = this.menuList[this.curIndex]['list'][0]['desc'];
      this.menuList[this.curIndex]['list'].forEach(item => {
        if (scrollHeight + 72 >= item.offsetTop) {
          activeFloor = item.desc; // 更新当前激活的楼层ID
        } else {
          return false; // 一旦找到第一个小于当前滚动位置的楼层，停止循环
        }
      });
      this.activeFloor = activeFloor; // 更新数据以触发视图更新
    },
    setActiveCur(dom) {
      this.activeFloor = dom;
      this.setHighActive(dom)
    },
    gotoPath(path) {
      this.$router.push(path)
    },
    activeArea(type) {
      console.log(type);
    },
    setHighActive(dom) {
      this.scrollLock = true
      const ele = document.getElementById(dom)
      ele.classList.add('ceshi')
      ele.scrollIntoView({ behavior: 'smooth', block: 'start' })
      setTimeout(() => {
        ele.classList.remove('ceshi')
      }, 1000)
    }
  }
}
</script>

<style scoped lang="scss">
.sidebar {
  width: 158px;
  padding: 21px;
  box-sizing: border-box;
  background: #FFFFFF;
  box-shadow: 0px 0px 11px 2px rgba(147, 147, 147, 0.11);
}

.ceshi {
  // animation: fadeInOut 2s infinite;
}

ul {
  list-style: none;
  padding: 0;
}

.not-point {
  pointer-events: none;
  /* 阻止鼠标事件 */
  opacity: 0.5;
  /* 可选，降低透明度以视觉上表示不可用 */
  cursor: not-allowed;
  /* 改变鼠标光标样式，表示不可用 */
}

li {
  margin-bottom: 10px;

  div {
    letter-spacing: 0.08em;
    color: #1E2226;
    margin: 11px 0;
    cursor: pointer;

    img {
      margin-right: 6px;
    }
  }

  p {
    margin: 9px 0;
    letter-spacing: 0.08em;
    line-height: 18px;
    color: #8A9099;
    cursor: pointer;

    &:hover {
      color: #006AFF;
    }
  }

  .curActive {
    color: #006AFF;
  }
}

/* {
  display: block;
  padding: 8px 12px;
  text-decoration: none;
  color: #333;
  border-radius: 4px;
} */
/* 
:hover {
  background: #e0e0e0;
} */

.active {
  font-weight: bold;
  letter-spacing: 0.08em;
  color: #006AFF;
}

.item-active {
  color: #006AFF;
}

/* 
.exact-active {
  background: #1976d2;
  color: white;
} */
</style>