Add reusable dropdown components

open-isle-cli/src/components/Dropdown.vue

@@ -0,0 +1,170 @@
+<template>
+  <div class="dropdown" ref="wrapper">
+    <div class="dropdown-display" @click="toggle">
+      <template v-if="multiple">
+        <span v-if="selectedLabels.length" class="selected-text">{{ selectedLabels.join(', ') }}</span>
+        <span v-else class="placeholder">{{ placeholder }}</span>
+      </template>
+      <template v-else>
+        <span v-if="selectedLabels.length" class="selected-text">{{ selectedLabels[0] }}</span>
+        <span v-else class="placeholder">{{ placeholder }}</span>
+      </template>
+      <i class="fas fa-caret-down dropdown-caret"></i>
+    </div>
+    <div v-if="open" class="dropdown-menu">
+      <div class="dropdown-search">
+        <i class="fas fa-search search-icon"></i>
+        <input type="text" v-model="search" placeholder="搜索" />
+      </div>
+      <div class="dropdown-option" v-for="o in filteredOptions" :key="o.id" @click="select(o.id)">
+        <img v-if="o.icon" :src="o.icon" class="option-icon" />
+        <span>{{ o.name }}</span>
+        <input v-if="multiple" type="checkbox" :checked="modelValue.includes(o.id)" @change.prevent />
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+import { ref, computed, watch, onMounted, onBeforeUnmount } from 'vue'
+
+export default {
+  name: 'BaseDropdown',
+  props: {
+    modelValue: { type: [Array, String, Number], default: () => [] },
+    placeholder: { type: String, default: '请选择' },
+    multiple: { type: Boolean, default: false },
+    fetchOptions: { type: Function, required: true }
+  },
+  emits: ['update:modelValue'],
+  setup(props, { emit }) {
+    const open = ref(false)
+    const search = ref('')
+    const options = ref([])
+    const loaded = ref(false)
+    const wrapper = ref(null)
+
+    const toggle = () => {
+      open.value = !open.value
+    }
+
+    const close = () => {
+      open.value = false
+    }
+
+    const select = id => {
+      if (props.multiple) {
+        const arr = Array.isArray(props.modelValue) ? [...props.modelValue] : []
+        const idx = arr.indexOf(id)
+        if (idx > -1) {
+          arr.splice(idx, 1)
+        } else {
+          arr.push(id)
+        }
+        emit('update:modelValue', arr)
+      } else {
+        emit('update:modelValue', id)
+        close()
+      }
+    }
+
+    const filteredOptions = computed(() => {
+      if (!search.value) return options.value
+      return options.value.filter(o => o.name.toLowerCase().includes(search.value.toLowerCase()))
+    })
+
+    const clickOutside = e => {
+      if (wrapper.value && !wrapper.value.contains(e.target)) {
+        close()
+      }
+    }
+
+    watch(open, async val => {
+      if (val && !loaded.value) {
+        try {
+          const res = await props.fetchOptions()
+          options.value = Array.isArray(res) ? res : []
+          loaded.value = true
+        } catch {
+          options.value = []
+        }
+      }
+    })
+
+    onMounted(() => {
+      document.addEventListener('click', clickOutside)
+    })
+
+    onBeforeUnmount(() => {
+      document.removeEventListener('click', clickOutside)
+    })
+
+    const selectedLabels = computed(() => {
+      if (props.multiple) {
+        return options.value.filter(o => (props.modelValue || []).includes(o.id)).map(o => o.name)
+      }
+      const match = options.value.find(o => o.id === props.modelValue)
+      return match ? [match.name] : []
+    })
+
+    return { open, toggle, select, search, filteredOptions, wrapper, selectedLabels }
+  }
+}
+</script>
+
+<style scoped>
+.dropdown {
+  position: relative;
+  width: 200px;
+}
+.dropdown-display {
+  border: 1px solid #ccc;
+  border-radius: 5px;
+  padding: 5px 10px;
+  cursor: pointer;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+.placeholder {
+  color: gray;
+}
+.dropdown-menu {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  right: 0;
+  background: white;
+  border: 1px solid #ccc;
+  z-index: 10;
+  max-height: 200px;
+  overflow-y: auto;
+}
+.dropdown-search {
+  display: flex;
+  align-items: center;
+  padding: 5px;
+  border-bottom: 1px solid #eee;
+}
+.dropdown-search input {
+  flex: 1;
+  border: none;
+  outline: none;
+  margin-left: 5px;
+}
+.dropdown-option {
+  display: flex;
+  align-items: center;
+  padding: 5px 10px;
+  gap: 5px;
+  cursor: pointer;
+}
+.dropdown-option:hover {
+  background-color: #f5f5f5;
+}
+.option-icon {
+  width: 16px;
+  height: 16px;
+}
+</style>
+