169 lines
7.0 KiB
Vue
169 lines
7.0 KiB
Vue
<template>
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<div class="aa-select" :class="{ 'is-open': open, 'is-disabled': disabled }" ref="root">
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<div class="aa-select-trigger" @click="toggle" tabindex="0">
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<template v-if="multiple">
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<span v-if="!selectedArr.length" class="placeholder">{{ placeholder }}</span>
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<span v-for="v in selectedArr" :key="v" class="tag">
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{{ labelOf(v) }}<span class="x" @click.stop="remove(v)">✕</span>
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</span>
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</template>
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<span v-else-if="selectedVal == null" class="placeholder">{{ placeholder }}</span>
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<span v-else>{{ labelOf(selectedVal) }}</span>
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<span class="caret">▾</span>
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</div>
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<div class="aa-select-panel" v-show="open">
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<div v-if="searchable" class="aa-select-search">
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<input v-model="keyword" placeholder="输入关键字" @click.stop>
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</div>
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<template v-if="groups && groups.length">
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<template v-for="g in filteredGroups" :key="g.label">
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<div class="aa-select-group-label">{{ g.label }}</div>
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<div
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v-for="o in g.options" :key="o.value"
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class="aa-select-option"
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:class="{ 'is-selected': isSelected(o.value), 'is-disabled': o.disabled }"
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@click="choose(o)"
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>
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{{ o.label }}<span class="check">✓</span>
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</div>
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</template>
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</template>
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<template v-else>
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<div
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v-for="o in filteredOptions" :key="o.value"
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class="aa-select-option"
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:class="{ 'is-selected': isSelected(o.value), 'is-disabled': o.disabled }"
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@click="choose(o)"
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>
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{{ o.label }}<span class="check">✓</span>
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</div>
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</template>
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<div v-if="isEmpty" class="aa-select-empty">无匹配选项</div>
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</div>
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</div>
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</template>
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<script setup>
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import { computed, ref, watch, onMounted, onBeforeUnmount } from 'vue';
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const props = defineProps({
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modelValue: { type: [String, Number, Array], default: null },
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options: { type: Array, default: () => [] }, // [{ value, label, disabled? }]
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groups: { type: Array, default: null }, // [{ label, options: [...] }]
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multiple: { type: Boolean, default: false },
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searchable: { type: Boolean, default: false },
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disabled: { type: Boolean, default: false },
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placeholder: { type: String, default: '请选择' }
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});
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const emit = defineEmits(['update:modelValue', 'change']);
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const open = ref(false);
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const keyword = ref('');
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const root = ref(null);
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const selectedArr = computed(() => Array.isArray(props.modelValue) ? props.modelValue : []);
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const selectedVal = computed(() => Array.isArray(props.modelValue) ? null : props.modelValue);
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const filteredOptions = computed(() => {
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if (!props.searchable || !props.keyword) return props.options;
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const q = props.keyword.trim().toLowerCase();
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return props.options.filter(o => String(o.label).toLowerCase().includes(q));
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});
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const filteredGroups = computed(() => {
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if (!props.groups) return [];
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if (!props.searchable || !props.keyword) return props.groups;
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const q = props.keyword.trim().toLowerCase();
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return props.groups
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.map(g => ({ label: g.label, options: g.options.filter(o => String(o.label).toLowerCase().includes(q)) }))
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.filter(g => g.options.length);
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});
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const isEmpty = computed(() =>
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props.groups ? filteredGroups.value.length === 0 : filteredOptions.value.length === 0
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);
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watch(open, (v) => { if (v && props.searchable) keyword.value = ''; });
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function toggle() {
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if (props.disabled) return;
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open.value = !open.value;
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}
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function isSelected(v) {
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return props.multiple ? selectedArr.value.includes(v) : selectedVal.value === v;
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}
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function labelOf(v) {
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const flat = props.options.length ? props.options : (props.groups || []).flatMap(g => g.options);
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const found = flat.find(o => o.value === v);
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return found ? found.label : v;
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}
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function choose(o) {
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if (o.disabled) return;
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if (props.multiple) {
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const next = selectedArr.value.includes(o.value)
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? selectedArr.value.filter(x => x !== o.value)
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: [...selectedArr.value, o.value];
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emit('update:modelValue', next);
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emit('change', next);
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} else {
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emit('update:modelValue', o.value);
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emit('change', o.value);
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open.value = false;
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}
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}
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function remove(v) {
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const next = selectedArr.value.filter(x => x !== v);
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emit('update:modelValue', next);
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emit('change', next);
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}
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function onDocClick(e) {
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if (root.value && !root.value.contains(e.target)) open.value = false;
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}
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onMounted(() => document.addEventListener('click', onDocClick));
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onBeforeUnmount(() => document.removeEventListener('click', onDocClick));
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</script>
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<!-- 样式对齐 components.css 与 select.json 契约（触发器样式同 Input） -->
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<style scoped>
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.aa-select { position: relative; display: inline-block; min-width: 220px; }
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.aa-select-trigger {
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display: flex; align-items: center; gap: 8px; min-height: 32px; height: auto;
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padding: 2px 28px 2px 12px; background: #fff; border: 1px solid #E8ECF1;
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border-radius: 4px; box-sizing: border-box; cursor: pointer; transition: border-color .15s, box-shadow .15s;
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font-size: 14px; color: #262626; flex-wrap: wrap; position: relative;
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}
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.aa-select-trigger:hover { border-color: #2F54EB; }
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.aa-select.is-open .aa-select-trigger { border-color: #2F54EB; box-shadow: 0 0 0 2px rgba(47,84,235,0.2); }
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.aa-select.is-disabled .aa-select-trigger { background: #F5F5F5; border-color: transparent; color: #BFBFBF; cursor: not-allowed; }
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.aa-select-trigger .placeholder { color: #BFBFBF; }
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.aa-select-trigger .caret { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); transition: transform .15s; color: #8C8C8C; }
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.aa-select.is-open .caret { transform: translateY(-50%) rotate(180deg); }
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.aa-select-trigger .tag {
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display: inline-flex; align-items: center; gap: 4px; background: #F0F5FF; color: #2F54EB;
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border-radius: 2px; padding: 1px 6px; font-size: 12px; line-height: 20px;
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}
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.aa-select-trigger .tag .x { cursor: pointer; }
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.aa-select-panel {
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position: absolute; z-index: 10; top: calc(100% + 4px); left: 0; right: 0;
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background: #fff; border-radius: 4px; box-shadow: 0 4px 16px rgba(0,0,0,0.12);
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max-height: 256px; overflow-y: auto; padding: 4px 0;
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}
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.aa-select-search { padding: 6px 8px; border-bottom: 1px solid #F0F0F0; }
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.aa-select-search input { width: 100%; box-sizing: border-box; border: 1px solid #E8ECF1; border-radius: 4px; padding: 4px 8px; font-size: 13px; outline: none; }
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.aa-select-search input:focus { border-color: #2F54EB; }
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.aa-select-group-label { padding: 6px 12px; font-size: 12px; color: #8C8C8C; }
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.aa-select-option {
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display: flex; align-items: center; gap: 8px; padding: 0 12px; height: 32px; cursor: pointer;
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font-size: 14px; color: #262626; box-sizing: border-box;
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}
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.aa-select-option:hover { background: #F5F7FA; }
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.aa-select-option.is-selected { background: #F0F5FF; color: #2F54EB; }
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.aa-select-option .check { visibility: hidden; margin-left: auto; }
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.aa-select-option.is-selected .check { visibility: visible; }
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.aa-select-option.is-disabled { color: #BFBFBF; cursor: not-allowed; }
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.aa-select-empty { padding: 16px 12px; text-align: center; color: #BFBFBF; font-size: 13px; }
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</style>
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