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guochunsi
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src/components/SearchForm/index2.vue
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321
src/components/SearchForm/index2.vue
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<template>
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<div class="search-form__wrap" :class="{ 'search-form__wrap--with-title': filterTitle }">
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<div class="search-form__bar">
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<div class="search-form-container">
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<el-form :model="formModel" ref="formRef" :inline="true" @keyup.enter="handleKeyupEnter" :label-width="labelWidth">
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<!-- 筛选 + 展开更多 放在同一表单项内，保证垂直对齐 -->
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<el-form-item v-if="filterTitle || hasCollapsibleItems" class="search-form__left-group">
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<div class="search-form__left-inner">
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<span v-if="filterTitle" class="search-form__title">
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<el-icon class="search-form__title-icon"><Search /></el-icon>
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{{ filterTitle }}
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</span>
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<el-button
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v-if="hasCollapsibleItems"
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link
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type="primary"
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class="toggle-btn"
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@click="toggleExpand"
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>
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<el-icon style="margin-right: 4px">
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<ArrowUp v-if="isExpanded" />
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<ArrowDown v-else />
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</el-icon>
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{{ isExpanded ? '收起' : '展开更多' }}
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</el-button>
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</div>
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</el-form-item>
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<slot :visible="true" :expanded="isExpanded"></slot>
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<!-- 收起时：查询/重置在首行 -->
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<div v-show="!isExpanded" class="actions-outside">
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<slot name="actions"></slot>
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</div>
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<!-- 折叠区：展开时内部再放一份查询/重置，位置在更多筛选项之后 -->
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<div v-if="hasCollapsibleItems" class="collapse-grid" :class="{ 'is-expanded': isExpanded }">
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<div class="collapse-grid-inner">
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<div class="collapse-grid-cell">
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<slot :visible="false" :expanded="isExpanded" @has-content="hasCollapsibleContent = true"></slot>
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<div v-show="isExpanded" class="actions-inside">
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<slot name="actions"></slot>
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</div>
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</div>
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</div>
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</div>
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<div v-show="false" ref="detectionWrapperRef" class="detection-wrapper">
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<slot :visible="false" :expanded="true"></slot>
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</div>
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</el-form>
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</div>
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</div>
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</div>
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</template>
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<script setup lang="ts" name="search-form">
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import { ref, watch, computed, onMounted, nextTick } from 'vue';
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import { ArrowUp, ArrowDown, Search } from '@element-plus/icons-vue';
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const props = defineProps({
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/**
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* 筛选标题（如「筛选」），传入时在表单左侧显示标题+竖线，与表单项同一行
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*/
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filterTitle: {
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type: String,
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default: '',
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},
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/**
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* 表单数据模型
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*/
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model: {
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type: Object,
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required: true,
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},
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/**
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* 是否默认展开折叠区域
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*/
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defaultExpanded: {
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type: Boolean,
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default: false,
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},
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/**
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* 是否显示展开/折叠按钮
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* 如果不设置，将自动检测是否有可折叠内容（visible=false 的插槽）
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*/
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showCollapse: {
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type: Boolean,
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default: undefined,
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},
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/**
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* 表单项标签宽度
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*/
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labelWidth: {
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type: String,
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default: '',
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},
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});
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const emit = defineEmits(['expand-change', 'keyup-enter']);
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const formModel = props.model;
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const { filterTitle } = props;
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const formRef = ref();
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const isExpanded = ref(props.defaultExpanded);
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const hasCollapsibleContent = ref(false);
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const detectionWrapperRef = ref<HTMLElement | null>(null);
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// 检测是否有可折叠内容
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const checkCollapsibleContent = () => {
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// 如果 showCollapse 明确指定，则使用指定值
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if (props.showCollapse !== undefined) {
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hasCollapsibleContent.value = props.showCollapse
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return
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}
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// 否则，通过检查隐藏的检测元素是否有内容来判断
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// 需要等待 DOM 渲染完成，可能需要多次尝试以确保数据加载完成
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let retryCount = 0
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const maxRetries = 5
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const check = () => {
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nextTick(() => {
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setTimeout(() => {
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if (detectionWrapperRef.value) {
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// 检查检测元素是否有子元素（排除文本节点）
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// 检查是否有 el-form-item 元素（因为表单项会被渲染为 el-form-item）
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const hasContent = detectionWrapperRef.value.children.length > 0 ||
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detectionWrapperRef.value.querySelector('.el-form-item') !== null ||
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(!!detectionWrapperRef.value.textContent && detectionWrapperRef.value.textContent.trim() !== '')
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if (hasContent || retryCount >= maxRetries) {
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hasCollapsibleContent.value = hasContent
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} else {
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// 如果还没检测到内容且未达到最大重试次数，继续重试
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retryCount++
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setTimeout(check, 100)
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}
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} else {
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if (retryCount < maxRetries) {
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retryCount++
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setTimeout(check, 100)
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} else {
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hasCollapsibleContent.value = false
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}
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}
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}, 50)
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})
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}
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check()
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}
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// 是否有需要折叠的项
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const hasCollapsibleItems = computed(() => {
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if (props.showCollapse !== undefined) {
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return props.showCollapse
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}
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return hasCollapsibleContent.value
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});
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// 处理回车键
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const handleKeyupEnter = () => {
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emit('keyup-enter');
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};
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// 切换展开/收起状态
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const toggleExpand = () => {
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isExpanded.value = !isExpanded.value;
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emit('expand-change', isExpanded.value);
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};
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// 监听 defaultExpanded 变化
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watch(
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() => props.defaultExpanded,
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(newVal) => {
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isExpanded.value = newVal;
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}
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);
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// 监听 showCollapse 变化
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watch(
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() => props.showCollapse,
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() => {
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checkCollapsibleContent()
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}
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);
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// 初始化时检测
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onMounted(() => {
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checkCollapsibleContent()
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});
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// 暴露方法供外部调用
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defineExpose({
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formRef,
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toggleExpand,
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expand: () => {
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isExpanded.value = true;
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emit('expand-change', true);
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},
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collapse: () => {
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isExpanded.value = false;
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emit('expand-change', false);
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},
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});
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</script>
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<style lang="scss" scoped>
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.search-form__bar {
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display: flex;
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align-items: flex-start;
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flex-wrap: wrap;
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gap: 4px 0;
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min-height: 32px;
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}
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.search-form__left-group {
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:deep(.el-form-item__label) {
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display: none;
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}
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:deep(.el-form-item__content) {
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margin-left: 0 !important;
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}
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margin-bottom: 18px;
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}
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.search-form__left-inner {
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display: flex;
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align-items: center;
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flex-wrap: wrap;
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gap: 0;
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}
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.search-form__title {
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position: relative;
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display: inline-flex;
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align-items: center;
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gap: 6px;
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flex-shrink: 0;
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padding-right: 12px;
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margin-right: 12px;
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height: 32px;
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line-height: 32px;
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font-size: 14px;
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font-weight: 500;
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color: var(--el-text-color-secondary);
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cursor: default;
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user-select: none;
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&::after {
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content: '';
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position: absolute;
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right: 0;
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top: 50%;
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transform: translateY(-50%);
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width: 1px;
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height: 14px;
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background: var(--el-border-color);
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}
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}
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.search-form__title-icon {
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font-size: 15px;
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color: var(--el-text-color-secondary);
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}
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.search-form-container {
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flex: 1;
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min-width: 0;
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:deep(.el-form--inline) {
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align-items: center;
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}
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.search-form__left-inner :deep(.toggle-btn) {
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font-size: 14px;
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font-weight: 500;
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height: 32px;
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display: inline-flex;
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align-items: center;
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border-radius: 6px;
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}
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:deep(.el-form-item:not(:has(.el-button))) {
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margin-right: 15px;
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}
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/* grid 0fr→1fr 高度过渡，ease-out 收尾不弹跳 */
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.collapse-grid {
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display: grid;
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grid-template-rows: 0fr;
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transition: grid-template-rows 0.26s cubic-bezier(0.33, 1, 0.68, 1);
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contain: layout;
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&.is-expanded {
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grid-template-rows: 1fr;
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}
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}
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.collapse-grid-inner {
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overflow: hidden;
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min-height: 0;
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backface-visibility: hidden;
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}
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.collapse-grid-cell {
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overflow: hidden;
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min-height: 0;
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opacity: 0;
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/* 收起时立即隐藏，不出现输入框慢慢消失 */
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transition: opacity 0s;
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}
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.collapse-grid.is-expanded .collapse-grid-cell {
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opacity: 1;
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/* 仅展开时淡入 */
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transition: opacity 0.12s ease-out;
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}
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.actions-outside,
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.actions-inside {
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display: contents;
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:deep(.el-form-item) {
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margin-right: 0!important;
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}
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}
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}
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</style>
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