src/components/SelectSingle.vue

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  http://www.apache.org/licenses/LICENSE-2.0

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<template>
  <div class="bar-select cp flex-h" :class="{ active: visible }">
    <div class="bar-i" @click="setPopper">
      <span v-if="selected.value">
        {{ selected.label }}
      </span>
      <span class="no-data" v-else>Please select a option</span>
      <span class="remove-icon" @click="removeSelected" v-if="clearable"> × </span>
    </div>
    <div class="opt-wrapper" v-show="visible">
      <div
        class="opt ell"
        @click="handleSelect(i)"
        :class="{ 'select-disabled': selected.value === i.value }"
        v-for="i in options"
        :key="i.value"
      >
        {{ i.label }}
      </div>
    </div>
  </div>
</template>
<script lang="ts" setup>
  import { ref, watch } from "vue";
  import type { PropType } from "vue";
  import type { Option } from "@/types/app";

  /*global  defineProps, defineEmits*/
  const emit = defineEmits(["change"]);
  const props = defineProps({
    options: {
      type: Array as PropType<Option[]>,
      default: () => [],
    },
    value: {
      type: String as PropType<string>,
      default: () => "",
    },
    clearable: { type: Boolean, default: false },
  });
  const visible = ref<boolean>(false);
  const opt = props.options.find((d: Option) => props.value === d.value);
  const selected = ref<Option>(opt || { label: "", value: "" });

  function handleSelect(i: Option) {
    selected.value = i;
    emit("change", i.value);
  }
  function removeSelected() {
    selected.value = { label: "", value: "" };
    emit("change", "");
  }
  watch(
    () => props.value,
    (data) => {
      const opt = props.options.find((d: Option) => data === d.value);
      selected.value = opt || { label: "", value: "" };
    },
  );
  document.body.addEventListener("click", handleClick, false);

  function handleClick() {
    visible.value = false;
  }
  function setPopper(event: MouseEvent) {
    event.stopPropagation();
    visible.value = !visible.value;
  }
</script>
<style lang="scss" scoped>
  .bar-select {
    position: relative;
    justify-content: space-between;
    border: 1px solid #ddd;
    background: #fff;
    border-radius: 3px;
    color: #000;
    font-size: 12px;
    height: 24px;

    .selected {
      padding: 0 3px;
      border-radius: 3px;
      margin: 3px;
      color: #409eff;
      background-color: #fafafa;
      border: 1px solid #e8e8e8;
      text-align: center;
    }
  }

  .no-data {
    color: #c0c4cc;
  }

  .bar-i {
    height: 100%;
    width: 100%;
    padding: 2px 10px;
    overflow: auto;
    color: #606266;
    position: relative;

    &:hover {
      .remove-icon {
        display: block;
      }
    }
  }

  .remove-icon {
    position: absolute;
    right: 5px;
    top: 0;
    font-size: 14px;
    display: none;
    color: #aaa;
    cursor: pointer;
  }

  .opt-wrapper {
    color: #606266;
    position: absolute;
    top: 26px;
    left: 0;
    background: #fff;
    box-shadow: 0 1px 6px rgba(99, 99, 99, 0.2);
    border: 1px solid #ddd;
    width: 100%;
    border-radius: 0 0 3px 3px;
    border-right-width: 1px !important;
    z-index: 10;
    overflow: auto;
    max-height: 200px;
    padding-bottom: 2px;

    .close {
      position: absolute;
      right: 10px;
      top: 12px;
      opacity: 0.6;

      &:hover {
        opacity: 1;
      }
    }
  }

  .opt {
    padding: 7px 15px;

    &.select-disabled {
      color: #409eff;
      cursor: not-allowed;
    }

    &:hover {
      background-color: #f5f5f5;
    }
  }
</style>