fiee-official-website/src/components/customSelect/size768/index.vue

<template>
  <div class="custom-select-wrapper" v-click-outside="closeDropdown">
    <div class="custom-select-display" @click="toggleDropdown">
      <span class="selected-text">{{ selectedLabel }}</span>
      <div class="select-arrow" :class="{ open: isOpen }">
        <svg width="10" height="5" viewBox="0 0 10 5" fill="none">
          <path
            d="M1 1L5 4L9 1"
            stroke="#455363"
            stroke-width="1.5"
            stroke-linecap="round"
            stroke-linejoin="round"
          />
        </svg>
      </div>
    </div>
    <transition name="dropdown">
      <div v-if="isOpen" class="custom-select-dropdown">
        <div
          v-for="option in props.options"
          :key="option.value"
          class="custom-select-option"
          :class="{ selected: option.value === props.modelValue }"
          @click="selectOption(option.value)"
        >
          {{ option.label }}
        </div>
      </div>
    </transition>
  </div>
</template>

<script setup>
import { ref, computed } from "vue";

const props = defineProps({
  options: {
    type: Array,
    required: true,
  },
  modelValue: {
    type: [String, Number],
    required: true,
  },
});

const emit = defineEmits(["update:modelValue"]);

const isOpen = ref(false);

const selectedLabel = computed(() => {
  const option = props.options.find((opt) => opt.value === props.modelValue);
  return option ? option.label : "";
});

const toggleDropdown = () => {
  isOpen.value = !isOpen.value;
};

const closeDropdown = () => {
  isOpen.value = false;
};

const selectOption = (value) => {
  emit("update:modelValue", value);
  closeDropdown();
};

// 点击外部关闭下拉菜单
const vClickOutside = {
  mounted(el, binding) {
    el.clickOutsideEvent = (event) => {
      if (!(el === event.target || el.contains(event.target))) {
        binding.value();
      }
    };
    document.addEventListener("click", el.clickOutsideEvent);
  },
  unmounted(el) {
    document.removeEventListener("click", el.clickOutsideEvent);
  },
};
</script>

<style scoped lang="scss">
.custom-select-wrapper {
  position: relative;
  width: 100%;
  height: 34 * 2.5px;
  user-select: none;
}

.custom-select-display {
  width: 100%;
  height: 100%;
  padding: 7 * 2.5px 36 * 2.5px 7 * 2.5px 12 * 2.5px;
  border: 1 * 2.5px solid #e0e0e6;
  border-radius: 3 * 2.5px;
  background: #fff;
  font-family: "PingFang SC", sans-serif;
  font-weight: 400;
  font-size: 14 * 2.5px;
  line-height: 1.375em;
  letter-spacing: 0.48 * 2.5px;
  color: #455363;
  cursor: pointer;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;

  &:hover {
    border-color: #ff7bac;
  }
}

.selected-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.select-arrow {
  position: absolute;
  right: 12 * 2.5px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;

  &.open {
    transform: translateY(-50%) rotate(180deg);
  }
}

.custom-select-dropdown {
  position: absolute;
  top: calc(100% + 4 * 2.5px);
  left: 0;
  right: 0;
  max-height: 300 * 2.5px;
  overflow-y: auto;
  background: #fff;
  border: 1 * 2.5px solid #e0e0e6;
  border-radius: 3 * 2.5px;
  box-shadow: 0 2 * 2.5px 8 * 2.5px rgba(0, 0, 0, 0.1);
  z-index: 1000;

  // 自定义滚动条样式
  &::-webkit-scrollbar {
    width: 5 * 2.5px;
  }

  &::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4 * 2.5px;
  }

  &::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 4 * 2.5px;
  }

  &::-webkit-scrollbar-thumb:hover {
    background: #fff0f5;
    cursor: pointer;
  }
}

.custom-select-option {
  padding: 8 * 2.5px 12 * 2.5px;
  font-family: "PingFang SC", sans-serif;
  font-weight: 400;
  font-size: 14 * 2.5px;
  cursor: pointer;
  transition: background 0.2s ease;
  background: #fff;
  &:hover {
    background: rgba(204, 204, 204, 0.2);
  }

  &.selected {
    color: #ff7bac;
    font-weight: 500;
  }
}

// 下拉动画
.dropdown-enter-active,
.dropdown-leave-active {
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.dropdown-enter-from {
  opacity: 0;
  transform: translateY(-10 * 2.5px);
}

.dropdown-leave-to {
  opacity: 0;
  transform: translateY(-10 * 2.5px);
}
</style>