kuailelunwen_new_houtai/src/components/SetLeftMenu.vue

<template>
  <aside class="sidebar">
    <ul>
      <li v-for="(item, index) in menuList" :key="item.path + random()">
        <div
          :class="[($route.path == item.path) || (item.noToPath && curIndex == index) ? 'active' : '', 'flex', ($route.path == item.path) ? curIndex = index : '']">
          <!-- @click="gotoPath(item, index)" 暂时先注释 -->
          <SvgIcon1 :iconPath="require(`@/assets/${item.img}`)" defaultColor="#8A9099" :size="16" activeColor="#006AFF"
            :isActive="($route.path == item.path || (item.noToPath && curIndex == index))" />
          <span class="title_text">{{ item.name }}</span>
        </div>
        <p :class="['flex', activeFloor == item1.desc ? 'curActive' : '']" v-for="(item1) in item.list"
          @click="setActiveCur(item1.desc, item)" :key="item1.name">{{ item1.name }}</p>
      </li>
    </ul>
  </aside>
</template>

<script>
import SvgIcon1 from '@/components/SvgIcon1.vue';
// :class="[$route.path != item.path ? 'not-point' : '', 'flex', activeFloor == item1.desc ? 'curActive' : '']"
import { mapState } from 'vuex';
import store from '../store';
export default {
  name: 'Sidebar',
  props: {
    menuList: {
      type: Array,
      required: true
    },
    // activeFloor:{
    //   type:String
    // },
    // curIndex:{
    //   type:Number
    // }
  },
  components: {
    SvgIcon1,
  },
  data() {
    return {
      activeFloor: null,
      curIndex: 0,
      scrollLock: false,
    }
  },

  watch: {
    '$route'(to, from) {
      console.log(to, from);
      // 路由变化时重新计算位置
      this.$nextTick(() => {
        this.calculateFloorOffsets();
        this.handleScroll(); // 立即检查当前位置
      });
    }
  },
  mounted() {
    this.activeFloor = this.menuList[this.curIndex]?.list?.[0]?.desc;
    this.$nextTick(() => {
      // 更可靠的获取滚动容器方式
      this.scrollContainer = document.querySelector('.main-content') ||
        document.getElementById('main-content') ||
        window;

      if (this.scrollContainer) {
        this.scrollContainer.addEventListener('scroll', this.handleScroll);
        this.calculateFloorOffsets();
      } else {
        console.error('未找到滚动容器');
      }
    });
  },
  beforeDestroy() {
    if (this.scrollContainer) {
      this.scrollContainer.removeEventListener('scroll', this.handleScroll);
    }
  },
  created() {
    // console.log(this.$parent.$refs.scrollContainer,'this.$refs.sc--rollContainer--');
  },
  computed: {
    ...mapState(['pageTitle']) // 从Vuex映射showSidebar状态到组件的计算属性中
  },
  methods: {
    random() {
      var randomNumber = Math.random();
      return randomNumber
    },
    calculateFloorOffsets() {
      this.menuList.forEach(item => {
        item.list?.forEach(every => {
          const el = document.getElementById(every.desc);
          if (el) {
            // 获取元素相对于视口顶部的距离
            every.offsetTop = el.getBoundingClientRect().top + window.pageYOffset;
          }
        });
      });
    },

    handleScroll() {
      if (this.scrollLock || !this.menuList[this.curIndex]?.list) return;

      const scrollPosition = this.getScrollPosition();
      let activeFloor = null;

      // 从下往上查找当前可见区域对应的楼层
      for (let i = this.menuList[this.curIndex].list.length - 1; i >= 0; i--) {
        const item = this.menuList[this.curIndex].list[i];
        if (scrollPosition + 100 >= (item.offsetTop || 0)) { // 100是提前量
          activeFloor = item.desc;
          break;
        }
      }

      if (activeFloor && this.activeFloor !== activeFloor) {
        this.activeFloor = activeFloor;
      }
    },

    getScrollPosition() {
      if (this.scrollContainer === window) {
        return window.pageYOffset || document.documentElement.scrollTop;
      }
      return this.scrollContainer.scrollTop;
    },
    // setActiveCur(dom, item) {
    //   if (this.$route.path != item.path) {
    //     this.$router.push(item.path)
    //     store.commit('SET_PAGETITLE', item.name);
    //   }
    //   setTimeout(() => {
    //     this.activeFloor = dom;
    //     this.setHighActive(dom)
    //   }, 500)
    // },

    // setHighActive(dom) {
    //   this.scrollLock = true;
    //   const ele = document.getElementById(dom)
    //   if (!ele) return
    //   ele.classList.add('ceshi')
    //   ele.scrollIntoView({ behavior: 'smooth', block: 'start' })
    //   setTimeout(() => {
    //     ele.classList.remove('ceshi')
    //   }, 1000)
    // }
    gotoPath(item, index) {
      let path = item.path;
      if (!path) {
        this.curIndex = index;
        return
      }
      if (this.$route.path != path) {
        this.curIndex = index
        this.scrollLock = false;
        this.handleScroll()
        // 重置页面滚动高度
        const dom = document.getElementById('main-content')
        dom.scrollTop = 0;
        this.$router.push(path)
      }
    },
    activeArea(type) {
      console.log(type);
    },
    setActiveCur(dom, item) {
      debugger
      if (this.$route.path !== item.path) {
        this.$router.push(item.path);
        store.commit('SET_PAGETITLE', item.name);
      }

      this.scrollLock = true;
      this.activeFloor = dom;

      this.$nextTick(() => {
        this.setHighActive(dom);
        setTimeout(() => {
          this.scrollLock = false;
        }, 1000);
      });
    },

    setHighActive(dom) {
      const ele = document.getElementById(dom);
      if (ele) {
        ele.scrollIntoView({
          behavior: 'smooth',
          block: 'start'
        });
      }
    }
  }
}
</script>

<style scoped lang="scss">
.sidebar {
  min-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;
}

.title_text {
  margin-left: 6px;
}

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: 12px 0;
    height: 40px;
    cursor: pointer;

    img {
      margin-right: 6px;
    }
  }

  p {
    letter-spacing: 0.08em;
    line-height: 18px;
    height: 36px;
    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>