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<template>
  <el-autocomplete class="top-search"
                   popper-class="my-autocomplete"
                   v-model="value"
                   :fetch-suggestions="querySearch"
                   :placeholder="$t('search')"
                   @select="handleSelect">
 
    <template slot-scope="{ item }">
      <i :class="[item[iconKey],'icon']"></i>
      <div class="name">{{ item[labelKey] }}</div>
      <div class="addr">{{ item[pathKey] }}</div>
    </template>
  </el-autocomplete>
</template>
 
<script>
  import config from "../sidebar/config.js";
  import {mapGetters} from "vuex";
 
  export default {
    data() {
      return {
        config: config,
        value: "",
        menuList: []
      };
    },
    created() {
      this.getMenuList();
    },
 
    watch: {
      menu() {
        this.getMenuList();
      }
    },
    computed: {
      labelKey() {
        return this.website.menu.props.label || this.config.propsDefault.label;
      },
      pathKey() {
        return this.website.menu.props.path || this.config.propsDefault.path;
      },
      iconKey() {
        return this.website.menu.props.icon || this.config.propsDefault.icon;
      },
      childrenKey() {
        return (
          this.website.menu.props.children || this.config.propsDefault.children
        );
      },
      ...mapGetters(["menu", "website"])
    },
    methods: {
      getMenuList() {
        const findMenu = list => {
          for (let i = 0; i < list.length; i++) {
            const ele = Object.assign({}, list[i]);
            if (this.validatenull(ele[this.childrenKey])) {
              this.menuList.push(ele);
            } else {
              findMenu(ele[this.childrenKey]);
            }
          }
        };
        this.menuList = [];
        findMenu(this.menu);
      },
      querySearch(queryString, cb) {
        var restaurants = this.menuList;
        var results = queryString
          ? restaurants.filter(this.createFilter(queryString))
          : restaurants;
        // 调用 callback 返回建议列表的数据
        cb(results);
      },
      createFilter(queryString) {
        return restaurant => {
          return (
            restaurant.name.toLowerCase().indexOf(queryString.toLowerCase()) ===
            0
          );
        };
      },
      handleSelect(item) {
        this.value = "";
        this.$router.push({
          path: this.$router.$avueRouter.getPath({
            name: item[this.labelKey],
            src: item[this.pathKey]
          }, item.meta),
          query: item.query
        });
      }
    }
  };
</script>
 
<style lang="scss">
  .my-autocomplete {
    li {
      line-height: normal;
      padding: 7px;
 
      .icon {
        margin-right: 5px;
        display: inline-block;
        vertical-align: middle;
      }
 
      .name {
        display: inline-block;
        text-overflow: ellipsis;
        overflow: hidden;
        vertical-align: middle;
      }
 
      .addr {
        padding-top: 5px;
        width: 100%;
        font-size: 12px;
        color: #b4b4b4;
      }
 
      .highlighted .addr {
        color: #ddd;
      }
    }
  }
</style>