FE_IASF_client/src/layouts/header/index.vue

<template>
  <div :class="['header', { channel: isHome }]">
    <a class="logo" @click="toIndex">
      <img :src="require('@/assets/images/' + (isSfel ? 'logo2' : isHome ? 'logo' : 'logo-black') + '.png')" alt="">
    </a>
    <navbar ref="nav" :isHome.sync="isHome"></navbar>
    <div class="tools">
      <img class="search" :src="require('@/assets/images/search' + (isHome ? '-white' : '') + '.png')" alt="" @click.stop="toggleSearch">
      <img :src="require('@/assets/images/cn' + (isHome ? '-white' : '') + '.png')" alt="" @click.stop="toggleLang">
      <div v-if="showSearch" class="search-wrap" @click.stop="stop">
        <input ref="search" type="text" :placeholder="$t('column.titlePlaceholder')" v-model="title">
        <img class="search-icon" src="@/assets/images/search.png" alt="" @click="handleSearch">
        <i class="el-icon-close close-icon" @click="showSearch = false"></i>
      </div>
    </div>
  </div>
</template>
<script>
import { mapMutations } from 'vuex'
import navbar from '../navbar'
export default {
  data() {
    return {
      isHome: this.$route.path === '/home' || this.$route.path === '/sfel',
      showSearch: false,
      title: '',
      searchTimer: null
    };
  },
  components: {
    navbar
  },
  computed: {
    isSfel() {
      return this.$route.path === '/sfel'
    },
  },
  watch: {
    '$route'() {
      this.isHome = this.$route.path === '/home' || this.$route.path === '/sfel'
    },
  },
  beforeDestroy () {
    window.removeEventListener('scroll', this.handleScroll)
  },
  mounted() {
    this.setKeyword('')
    window.addEventListener('scroll', this.handleScroll) // 监听页面滚动
  },
  methods: {
    ...mapMutations('content', [
      'setKeyword'
    ]),
    toIndex() {
      this.$refs.nav.jump()
    },
    stop() {

    },
    // 获取页面滚动距离(home长页专用)
    handleScroll () {
      if (this.$route.path === '/home' || this.$route.path === '/sfel') {
        let scrollTop = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop
        if (this.isHome == scrollTop > 907) {
          this.isHome = !(scrollTop > 907)
        }
      }
    },
    // 切换显示搜索
    toggleSearch() {
      this.showSearch = !this.showSearch
      this.$nextTick(() => {
        this.$refs.search.focus()
      })
    },
    // 切换语言
    toggleLang() {
      let id = +(this.$route.query.siteId || this.$store.state.content.site)
      // 中英文站点的id是相邻的，有6个站点，1/2 3/4 5/6
      id % 2 ? id++ : id--
      location.href = this.$router.resolve(`/column?siteId=${id}`).href
      location.reload()
    },
    // 全局搜索
    handleSearch() {
      this.setKeyword(this.title)
      if (this.title) {
        this.showSearch = false
        this.$router.push(`/column/result`)
      }
    }
  }
};
</script>
<style scoped lang="scss">
$height: 90px;
.header {
  z-index: 10;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  min-width: $min-width;
  height: $height;
  box-sizing: content-box;
  &:not(.channel) {
    background-color: #fff;
    border-bottom: 1px solid #f7f7f7;
  }
  .logo{
    position: absolute;
    top: 0;
    left: 5%;
    font-size: 20px;
    color: #333330;
    line-height: $height;
    cursor: pointer;
    img {
        margin-right: 10px;
    }
  }
  .tools {
    position: absolute;
    top: 30px;
    right: 5%;
    img {
      cursor: pointer;
    }
  }
  .search {
    margin-right: 43px;
  }
}
.search-wrap {
  position: absolute;
  top: 67px;
  right: 89px;
  display: flex;
  align-items: center;
  padding: 10px 15px 10px 10px;
  background-color: #fff;
  box-shadow: 0px 6px 9px 0px rgba(0,0,0,0.3);
  input {
    width: 300px;
    height: 40px;
    padding: 0 40px 0 15px;
    font-size: 16px;
    color: #333;
    line-height: 46px;
    border: 0;
    border-radius: 4px;
    outline: none;
  }
  .search-icon {
    padding-right: 15px;
    margin: 0 15px;
    cursor: pointer;
    border-right: 1px solid #ccc;
  }
  .close-icon {
    font-size: 28px;
    cursor: pointer;
  }
}
@media (max-width: 1660px) {
  .header {
    .logo {
      left: 10px;
    }
    .search {
      margin-right: 20px;
    }
    .tools {
      right: 30px
    }
  }
}
</style>