156 lines
3.5 KiB
Vue
156 lines
3.5 KiB
Vue
<template>
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<div class="el-tree-select">
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<el-select style="width: 100%" v-model="modelValue" ref="treeSelect" :filterable="true" :clearable="true"
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@clear="clearHandle" :filter-method="selectFilterData" :placeholder="placeholder">
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<el-option :value="modelValue" :label="valueTitle">
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<el-tree id="tree-option" ref="selectTree" :accordion="accordion" :data="options" :props="state.props"
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:node-key="state.props.value" :expand-on-click-node="false" :default-expanded-keys="defaultExpandedKey"
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:filter-node-method="filterNode" @node-click="handleNodeClick"></el-tree>
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</el-option>
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</el-select>
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</div>
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</template>
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<script setup lang="ts">
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import {
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ref,
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getCurrentInstance,
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nextTick,
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onMounted,
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computed,
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watch
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} from "vue";
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const { proxy } = getCurrentInstance() as any;
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const state = defineProps({
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// 配置项
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props: {
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type: Object,
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default: () => {
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return {
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value: "value", // 值
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label: "label", // 名
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children: "children", // 子级
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};
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},
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},
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// 自动收起
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accordion: {
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type: Boolean,
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default: () => {
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return false;
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},
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},
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// v-model 绑定的值
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modelValue: {
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type: [String, Number],
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default: "",
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},
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// 数据源
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options: {
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type: Array,
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default: () => {
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return []
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}
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},
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// 提示文字
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placeholder: {
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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(["update:modelValue"]);
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const modelValue = computed({
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get: () => {
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return state.modelValue;
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},
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set: (val) => {
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emit("update:modelValue", val);
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},
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});
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const valueTitle = ref("");
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const defaultExpandedKey = ref([] as any[]);
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function handleNodeClick(node: any) {
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valueTitle.value = node[state.props.label];
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modelValue.value = node[state.props.value];
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defaultExpandedKey.value = [];
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proxy.$refs.treeSelect.blur();
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selectFilterData("");
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}
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function selectFilterData(val: any) {
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proxy.$refs.selectTree.filter(val);
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}
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function filterNode(value: any, data: any) {
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if (!value) return true;
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return data[state.props["label"]].indexOf(value) !== -1;
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}
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function clearHandle() {
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valueTitle.value = "";
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modelValue.value = "";
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defaultExpandedKey.value = [];
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clearSelected();
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}
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function clearSelected() {
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const allNode = document.querySelectorAll("#tree-option .el-tree-node");
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allNode.forEach((element) => element.classList.remove("is-current"));
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}
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function initHandle() {
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nextTick(() => {
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const selectedValue = modelValue.value;
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if (selectedValue !== null && typeof selectedValue !== "undefined") {
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const node = proxy.$refs.selectTree.getNode(selectedValue);
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if (node) {
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valueTitle.value = node.data[state.props.label];
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proxy.$refs.selectTree.setCurrentKey(selectedValue); // 设置默认选中
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defaultExpandedKey.value = [selectedValue]; // 设置默认展开
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} else {
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clearHandle();
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}
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}
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});
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}
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onMounted(() => {
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initHandle();
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});
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watch(modelValue, () => {
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initHandle();
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});
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</script>
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<style lang='scss' scoped>
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.el-scrollbar .el-scrollbar__view .el-select-dropdown__item {
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padding: 0;
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background-color: #fff;
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height: auto;
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}
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.el-select-dropdown__item.selected {
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font-weight: normal;
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}
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ul li .el-tree .el-tree-node__content {
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height: auto;
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padding: 0 20px;
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box-sizing: border-box;
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}
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:deep(.el-tree-node__content:hover),
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:deep(.el-tree-node__content:active),
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:deep(.is-current > div:first-child),
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:deep(.el-tree-node__content:focus) {
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background-color: mix(#fff, #409eff, 90%);
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color: #409eff;
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}
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</style>
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