import { defineComponent, ref, computed, nextTick, provide, reactive, watch, onBeforeUpdate, onMounted, resolveComponent, openBlock, createElementBlock, normalizeClass, Fragment, renderList, createBlock } from 'vue';
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import { isEqual, flattenDeep, cloneDeep } from 'lodash-unified';
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import '../../../utils/index.mjs';
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import '../../../constants/index.mjs';
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import '../../../hooks/index.mjs';
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import ElCascaderMenu from './menu.mjs';
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import Store from './store.mjs';
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import Node from './node.mjs';
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import { CommonProps, useCascaderConfig } from './config.mjs';
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import { sortByOriginalOrder, checkNode, getMenuIndex } from './utils.mjs';
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import { CASCADER_PANEL_INJECTION_KEY } from './types.mjs';
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import _export_sfc from '../../../_virtual/plugin-vue_export-helper.mjs';
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import { UPDATE_MODEL_EVENT, CHANGE_EVENT } from '../../../constants/event.mjs';
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import { useNamespace } from '../../../hooks/use-namespace/index.mjs';
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import { isEmpty } from '../../../utils/types.mjs';
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import { unique, castArray } from '../../../utils/arrays.mjs';
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import { isClient } from '@vueuse/core';
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import { scrollIntoView } from '../../../utils/dom/scroll.mjs';
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import { EVENT_CODE } from '../../../constants/aria.mjs';
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import { focusNode, getSibling } from '../../../utils/dom/aria.mjs';
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const _sfc_main = defineComponent({
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name: "ElCascaderPanel",
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components: {
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ElCascaderMenu
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},
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props: {
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...CommonProps,
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border: {
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type: Boolean,
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default: true
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},
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renderLabel: Function
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},
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emits: [UPDATE_MODEL_EVENT, CHANGE_EVENT, "close", "expand-change"],
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setup(props, { emit, slots }) {
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let manualChecked = false;
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const ns = useNamespace("cascader");
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const config = useCascaderConfig(props);
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let store = null;
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const initialLoaded = ref(true);
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const menuList = ref([]);
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const checkedValue = ref(null);
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const menus = ref([]);
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const expandingNode = ref(null);
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const checkedNodes = ref([]);
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const isHoverMenu = computed(() => config.value.expandTrigger === "hover");
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const renderLabelFn = computed(() => props.renderLabel || slots.default);
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const initStore = () => {
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const { options } = props;
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const cfg = config.value;
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manualChecked = false;
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store = new Store(options, cfg);
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menus.value = [store.getNodes()];
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if (cfg.lazy && isEmpty(props.options)) {
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initialLoaded.value = false;
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lazyLoad(void 0, (list) => {
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if (list) {
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store = new Store(list, cfg);
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menus.value = [store.getNodes()];
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}
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initialLoaded.value = true;
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syncCheckedValue(false, true);
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});
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} else {
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syncCheckedValue(false, true);
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}
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};
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const lazyLoad = (node, cb) => {
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const cfg = config.value;
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node = node || new Node({}, cfg, void 0, true);
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node.loading = true;
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const resolve = (dataList) => {
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const _node = node;
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const parent = _node.root ? null : _node;
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dataList && (store == null ? void 0 : store.appendNodes(dataList, parent));
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_node.loading = false;
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_node.loaded = true;
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_node.childrenData = _node.childrenData || [];
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cb && cb(dataList);
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};
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cfg.lazyLoad(node, resolve);
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};
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const expandNode = (node, silent) => {
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var _a;
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const { level } = node;
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const newMenus = menus.value.slice(0, level);
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let newExpandingNode;
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if (node.isLeaf) {
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newExpandingNode = node.pathNodes[level - 2];
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} else {
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newExpandingNode = node;
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newMenus.push(node.children);
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}
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if (((_a = expandingNode.value) == null ? void 0 : _a.uid) !== (newExpandingNode == null ? void 0 : newExpandingNode.uid)) {
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expandingNode.value = node;
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menus.value = newMenus;
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!silent && emit("expand-change", (node == null ? void 0 : node.pathValues) || []);
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}
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};
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const handleCheckChange = (node, checked, emitClose = true) => {
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const { checkStrictly, multiple } = config.value;
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const oldNode = checkedNodes.value[0];
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manualChecked = true;
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!multiple && (oldNode == null ? void 0 : oldNode.doCheck(false));
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node.doCheck(checked);
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calculateCheckedValue();
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emitClose && !multiple && !checkStrictly && emit("close");
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!emitClose && !multiple && !checkStrictly && expandParentNode(node);
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};
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const expandParentNode = (node) => {
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if (!node)
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return;
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node = node.parent;
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expandParentNode(node);
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node && expandNode(node);
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};
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const getFlattedNodes = (leafOnly) => {
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return store == null ? void 0 : store.getFlattedNodes(leafOnly);
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};
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const getCheckedNodes = (leafOnly) => {
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var _a;
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return (_a = getFlattedNodes(leafOnly)) == null ? void 0 : _a.filter((node) => node.checked !== false);
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};
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const clearCheckedNodes = () => {
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checkedNodes.value.forEach((node) => node.doCheck(false));
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calculateCheckedValue();
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menus.value = menus.value.slice(0, 1);
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expandingNode.value = null;
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emit("expand-change", []);
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};
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const calculateCheckedValue = () => {
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var _a;
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const { checkStrictly, multiple } = config.value;
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const oldNodes = checkedNodes.value;
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const newNodes = getCheckedNodes(!checkStrictly);
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const nodes = sortByOriginalOrder(oldNodes, newNodes);
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const values = nodes.map((node) => node.valueByOption);
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checkedNodes.value = nodes;
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checkedValue.value = multiple ? values : (_a = values[0]) != null ? _a : null;
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};
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const syncCheckedValue = (loaded = false, forced = false) => {
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const { modelValue } = props;
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const { lazy, multiple, checkStrictly } = config.value;
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const leafOnly = !checkStrictly;
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if (!initialLoaded.value || manualChecked || !forced && isEqual(modelValue, checkedValue.value))
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return;
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if (lazy && !loaded) {
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const values = unique(flattenDeep(castArray(modelValue)));
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const nodes = values.map((val) => store == null ? void 0 : store.getNodeByValue(val)).filter((node) => !!node && !node.loaded && !node.loading);
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if (nodes.length) {
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nodes.forEach((node) => {
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lazyLoad(node, () => syncCheckedValue(false, forced));
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});
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} else {
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syncCheckedValue(true, forced);
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}
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} else {
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const values = multiple ? castArray(modelValue) : [modelValue];
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const nodes = unique(values.map((val) => store == null ? void 0 : store.getNodeByValue(val, leafOnly)));
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syncMenuState(nodes, forced);
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checkedValue.value = cloneDeep(modelValue);
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}
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};
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const syncMenuState = (newCheckedNodes, reserveExpandingState = true) => {
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const { checkStrictly } = config.value;
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const oldNodes = checkedNodes.value;
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const newNodes = newCheckedNodes.filter((node) => !!node && (checkStrictly || node.isLeaf));
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const oldExpandingNode = store == null ? void 0 : store.getSameNode(expandingNode.value);
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const newExpandingNode = reserveExpandingState && oldExpandingNode || newNodes[0];
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if (newExpandingNode) {
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newExpandingNode.pathNodes.forEach((node) => expandNode(node, true));
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} else {
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expandingNode.value = null;
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}
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oldNodes.forEach((node) => node.doCheck(false));
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newNodes.forEach((node) => node.doCheck(true));
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checkedNodes.value = newNodes;
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nextTick(scrollToExpandingNode);
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};
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const scrollToExpandingNode = () => {
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if (!isClient)
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return;
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menuList.value.forEach((menu) => {
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const menuElement = menu == null ? void 0 : menu.$el;
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if (menuElement) {
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const container = menuElement.querySelector(`.${ns.namespace.value}-scrollbar__wrap`);
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const activeNode = menuElement.querySelector(`.${ns.b("node")}.${ns.is("active")}`) || menuElement.querySelector(`.${ns.b("node")}.in-active-path`);
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scrollIntoView(container, activeNode);
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}
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});
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};
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const handleKeyDown = (e) => {
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const target = e.target;
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const { code } = e;
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switch (code) {
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case EVENT_CODE.up:
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case EVENT_CODE.down: {
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e.preventDefault();
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const distance = code === EVENT_CODE.up ? -1 : 1;
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focusNode(getSibling(target, distance, `.${ns.b("node")}[tabindex="-1"]`));
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break;
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}
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case EVENT_CODE.left: {
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e.preventDefault();
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const preMenu = menuList.value[getMenuIndex(target) - 1];
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const expandedNode = preMenu == null ? void 0 : preMenu.$el.querySelector(`.${ns.b("node")}[aria-expanded="true"]`);
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focusNode(expandedNode);
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break;
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}
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case EVENT_CODE.right: {
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e.preventDefault();
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const nextMenu = menuList.value[getMenuIndex(target) + 1];
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const firstNode = nextMenu == null ? void 0 : nextMenu.$el.querySelector(`.${ns.b("node")}[tabindex="-1"]`);
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focusNode(firstNode);
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break;
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}
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case EVENT_CODE.enter:
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checkNode(target);
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break;
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}
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};
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provide(CASCADER_PANEL_INJECTION_KEY, reactive({
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config,
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expandingNode,
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checkedNodes,
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isHoverMenu,
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initialLoaded,
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renderLabelFn,
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lazyLoad,
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expandNode,
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handleCheckChange
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}));
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watch([config, () => props.options], initStore, {
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deep: true,
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immediate: true
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});
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watch(() => props.modelValue, () => {
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manualChecked = false;
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syncCheckedValue();
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}, {
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deep: true
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});
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watch(() => checkedValue.value, (val) => {
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if (!isEqual(val, props.modelValue)) {
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emit(UPDATE_MODEL_EVENT, val);
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emit(CHANGE_EVENT, val);
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}
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});
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onBeforeUpdate(() => menuList.value = []);
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onMounted(() => !isEmpty(props.modelValue) && syncCheckedValue());
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return {
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ns,
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menuList,
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menus,
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checkedNodes,
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handleKeyDown,
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handleCheckChange,
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getFlattedNodes,
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getCheckedNodes,
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clearCheckedNodes,
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calculateCheckedValue,
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scrollToExpandingNode
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};
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}
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});
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function _sfc_render(_ctx, _cache, $props, $setup, $data, $options) {
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const _component_el_cascader_menu = resolveComponent("el-cascader-menu");
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return openBlock(), createElementBlock("div", {
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class: normalizeClass([_ctx.ns.b("panel"), _ctx.ns.is("bordered", _ctx.border)]),
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onKeydown: _cache[0] || (_cache[0] = (...args) => _ctx.handleKeyDown && _ctx.handleKeyDown(...args))
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}, [
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(openBlock(true), createElementBlock(Fragment, null, renderList(_ctx.menus, (menu, index) => {
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return openBlock(), createBlock(_component_el_cascader_menu, {
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key: index,
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ref_for: true,
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ref: (item) => _ctx.menuList[index] = item,
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index,
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nodes: [...menu]
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}, null, 8, ["index", "nodes"]);
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}), 128))
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], 34);
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}
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var CascaderPanel = /* @__PURE__ */ _export_sfc(_sfc_main, [["render", _sfc_render], ["__file", "/home/runner/work/element-plus/element-plus/packages/components/cascader-panel/src/index.vue"]]);
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export { CascaderPanel as default };
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//# sourceMappingURL=index.mjs.map
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