semi-design/packages/semi-foundation/treeSelect/foundation.ts

import { isNumber, isFunction, get, isUndefined, isString, isEmpty, difference } from 'lodash';
import { strings } from '../treeSelect/constants';
import BaseFoundation, { DefaultAdapter } from '../base/foundation';
import {
    flattenTreeData,
    findDescendantKeys,
    findAncestorKeys,
    filter,
    normalizedArr,
    normalizeKeyList,
    getMotionKeys,
    calcCheckedKeysForChecked,
    calcCheckedKeys,
    calcCheckedKeysForUnchecked,
    getValueOrKey
} from '../tree/treeUtil';
import {
    BasicTreeInnerData,
    BasicTreeProps,
    BasicTreeNodeData,
    BasicTreeNodeProps,
    BasicKeyEntity,
    BasicExpandedOtherProps
} from '../tree/foundation';
import { Motion } from '../utils/type';
import isEnterPress from '../utils/isEnterPress';
import { ESC_KEY } from '../utils/keyCode';

/* Here ValidateStatus is the same as ValidateStatus in baseComponent */
export type ValidateStatus = 'error' | 'warning' | 'default';

export type Size = 'small' | 'large' | 'default';

export type BasicRenderSelectedItemInMultiple = (
    treeNode: BasicTreeNodeData,
    otherProps: { index: number | string; onClose: (tagContent: any, e: any) => void }
) => {
    isRenderInTag: boolean;
    content: any
};
export type BasicRenderSelectedItemInSingle = (treeNode: BasicTreeNodeData) => any;
export type BasicRenderSelectedItem = BasicRenderSelectedItemInSingle | BasicRenderSelectedItemInMultiple;

export interface BasicTriggerRenderProps {
    [x: string]: any;
    componentProps: BasicTreeSelectProps;
    disabled: boolean;
    inputValue: string;
    placeholder: string;
    value: BasicTreeNodeData[];
    onClear: (e: any) => void;
    onSearch: (inputValue: string) => void;
    onRemove: (key: string) => void
}

export type BasicOnChangeWithObject = (node: BasicTreeNodeData[] | BasicTreeNodeData, e: any) => void;
export type BasicOnChangeWithBasic = (
    value: BasicTreeNodeData['value'],
    node: BasicTreeNodeData[] | BasicTreeNodeData,
    e: any
) => void;

export interface BasicOnChange {
    (node: BasicTreeNodeData[] | BasicTreeNodeData, e: any): void;
    (
        value: BasicTreeNodeData['value'] | Array<BasicTreeNodeData['value']>,
        node: BasicTreeNodeData[] | BasicTreeNodeData,
        e: any
    ): void
}

export interface BasicTreeSelectProps extends Pick<BasicTreeProps,
'virtualize'
| 'renderFullLabel'
| 'renderLabel'
| 'autoExpandParent'
| 'className'
| 'defaultExpandAll'
| 'defaultExpandedKeys'
| 'defaultValue'
| 'disabled'
| 'emptyContent'
| 'expandAction'
| 'expandedKeys'
| 'filterTreeNode'
| 'labelEllipsis'
| 'leafOnly'
| 'multiple'
| 'onChangeWithObject'
| 'showClear'
| 'showFilteredOnly'
| 'style'
| 'treeData'
| 'treeNodeFilterProp'
| 'value'
| 'onExpand'
| 'expandAll'
| 'disableStrictly'
| 'aria-label'
| 'checkRelation'
| 'preventScroll'
> {
    borderless?: boolean;
    motion?: Motion;
    mouseEnterDelay?: number;
    mouseLeaveDelay?: number;
    arrowIcon?: any;
    autoAdjustOverflow?: boolean;
    clickToHide?: boolean;
    defaultOpen?: boolean;
    dropdownClassName?: string;
    dropdownMatchSelectWidth?: boolean;
    dropdownStyle?: any;
    insetLabel?: any;
    maxTagCount?: number;
    motionExpand?: boolean;
    optionListStyle?: any;
    outerBottomSlot?: any;
    outerTopSlot?: any;
    placeholder?: string;
    prefix?: any;
    searchAutoFocus?: boolean;
    searchPlaceholder?: string;
    showSearchClear?: boolean;
    size?: Size;
    suffix?: any;
    treeNodeLabelProp?: string;
    validateStatus?: ValidateStatus;
    zIndex?: number;
    searchPosition?: string;
    stopPropagation?: boolean | string;
    loadedKeys?: string[];
    showRestTagsPopover?: boolean;
    restTagsPopoverProps?: any;
    clickTriggerToHide?: boolean;
    loadData?: (data: BasicTreeNodeData) => Promise<void>;
    onSelect?: (selectedKey: string, selected: boolean, selectedNode: BasicTreeNodeData) => void;
    searchRender?: (inputProps: any) => any;
    renderSelectedItem?: BasicRenderSelectedItem;
    getPopupContainer?: () => HTMLElement;
    // triggerRender?: (props: BasicTriggerRenderProps) => any;
    onBlur?: (e: any) => void;
    onSearch?: (sunInput: string, filteredExpandedKeys: string[], filteredNodes: BasicTreeNodeData[]) => void;
    onChange?: BasicOnChange;
    onFocus?: (e: any) => void;
    onVisibleChange?: (isVisible: boolean) => void;
    onLoad?: (keys: Set<string>, data: BasicTreeNodeData) => void
}

export interface BasicTreeSelectInnerData extends Pick<BasicTreeInnerData,
'keyEntities'
| 'treeData'
| 'flattenNodes'
| 'cachedFlattenNodes'
| 'selectedKeys'
| 'checkedKeys'
| 'halfCheckedKeys'
| 'motionKeys'
| 'motionType'
| 'expandedKeys'
| 'filteredKeys'
| 'filteredExpandedKeys'
| 'filteredShownKeys'
| 'cachedKeyValuePairs'
| 'inputValue'
| 'disabledKeys'
| 'loadedKeys'
| 'loadingKeys'
| 'realCheckedKeys'
> {
    inputTriggerFocus: boolean;
    isOpen: boolean;
    // isInput: boolean;
    rePosKey: number;
    dropdownMinWidth: null | number;
    isHovering: boolean;
    prevProps: BasicTreeSelectProps
}

export interface TreeSelectAdapter<P = Record<string, any>, S = Record<string, any>> extends DefaultAdapter<P, S> {
    updateInputValue: (value: string) => void;
    registerClickOutsideHandler: (cb: (e: any) => void) => void;
    unregisterClickOutsideHandler: () => void;
    rePositionDropdown: () => void;
    updateState: (states: Partial<BasicTreeSelectInnerData>) => void;
    notifySelect: (selectedKey: string, selected: boolean, selectedNode: BasicTreeNodeData) => void;
    notifySearch: (input: string, filteredExpandedKeys: string[], filteredNodes: BasicTreeNodeData[]) => void;
    cacheFlattenNodes: (bool: boolean) => void;
    openMenu: () => void;
    closeMenu: (cb?: () => void) => void;
    getTriggerWidth: () => boolean | number;
    setOptionWrapperWidth: (width: null | number) => void;
    notifyClear: (e: any) => void;
    notifyChange: BasicOnChangeWithBasic;
    notifyChangeWithObject: BasicOnChangeWithObject;
    notifyExpand: (expandedKeys: Set<string>, expandedOtherProps: BasicExpandedOtherProps) => void;
    notifyFocus: (e: any) => void;
    notifyBlur: (e: any) => void;
    toggleHovering: (bool: boolean) => void;
    notifyLoad: (newLoadedKeys: Set<string>, data: BasicTreeNodeData) => void;
    updateInputFocus: (bool: boolean) => void;
    updateLoadKeys: (data: BasicTreeNodeData, resolve: (value?: any) => void) => void;
    updateIsFocus: (bool: boolean) => void;
    setClearInputFlag: (flag: boolean) => void;
    getClearInputFlag: () => boolean
}

export default class TreeSelectFoundation<P = Record<string, any>, S = Record<string, any>> extends BaseFoundation<TreeSelectAdapter<P, S>, P, S> {

    constructor(adapter: TreeSelectAdapter<P, S>) {
        super({ ...adapter });
    }

    init() {
        const { searchAutoFocus, searchPosition, filterTreeNode } = this.getProps();
        const triggerSearch = searchPosition === strings.SEARCH_POSITION_TRIGGER && filterTreeNode;
        const triggerSearchAutoFocus = searchAutoFocus && triggerSearch;
        this._setDropdownWidth();
        const able = !this._isDisabled();
        const isOpen = (this.getProp('defaultOpen') || triggerSearchAutoFocus) && able;
        if (isOpen) {
            this.open();
            this._registerClickOutsideHandler();
        }
        if (triggerSearchAutoFocus && able) {
            this.handleTriggerFocus(null);
        }
    }

    destroy() {
        // Ensure that event monitoring will be uninstalled, and the user may not trigger closePanel
        this._adapter.unregisterClickOutsideHandler();
    }

    _setDropdownWidth() {
        const { style, dropdownMatchSelectWidth } = this.getProps();
        let width;
        if (dropdownMatchSelectWidth) {
            if (style && isNumber(style.width)) {
                width = style.width;
            } else if (style && isString(style.width) && !style.width.includes('%')) {
                width = style.width;
            } else {
                width = this._adapter.getTriggerWidth();
            }
            this._adapter.setOptionWrapperWidth(width);
        }
    }

    _isMultiple() {
        return this.getProp('multiple');
    }

    _isAnimated() {
        return this.getProp('motionExpand');
    }

    _isDisabled(treeNode = {} as BasicTreeNodeProps) {
        return this.getProp('disabled') || treeNode.disabled;
    }

    _isExpandControlled() {
        return this.getProp('expandedKeys');
    }

    _isSelectToClose() {
        return !this.getProp('expandAction');
    }

    _isLoadControlled() {
        return this.getProp('loadedKeys');
    }

    _showFilteredOnly() {
        const { inputValue } = this.getStates();
        const { showFilteredOnly } = this.getProps();
        return Boolean(inputValue) && showFilteredOnly;
    }

    findDataForValue(findValue: string) {
        const { value, defaultValue, keyMaps } = this.getProps();
        const realValueName = get(keyMaps, 'value', 'value');
        const realKeyName = get(keyMaps, 'key', 'key');
        let valueArr = [];
        if (value) {
            valueArr = Array.isArray(value) ? value : [value];
        } else if (defaultValue) {
            valueArr = Array.isArray(defaultValue) ? defaultValue : [defaultValue];
        }
        return valueArr.find(item => {
            return item[realValueName] === findValue || item[realKeyName] === findValue;
        });
    }

    constructDataForValue(value: string) {
        const { treeNodeLabelProp, keyMaps } = this.getProps();
        const keyName = get(keyMaps, 'key', 'key');
        const labelName = get(keyMaps, 'label', treeNodeLabelProp);
        return {
            [keyName]: value,
            [labelName]: value
        };    
    }

    getDataForKeyNotInKeyEntities(value: string) {
        const { onChangeWithObject } = this.getProps();
        if (onChangeWithObject) {
            return this.findDataForValue(value);
        } else {
            return this.constructDataForValue(value);
        }
    }

    handleKeyDown = (e: any) => {
        if (e.key === ESC_KEY) {
            const isOpen = this.getState('isOpen');
            isOpen && this.close(e);
        } 
    }

    getTreeNodeProps(key: string) {
        const {
            expandedKeys = new Set([]),
            selectedKeys = [],
            checkedKeys = new Set([]),
            halfCheckedKeys = new Set([]),
            realCheckedKeys = new Set([]),
            keyEntities = {},
            filteredKeys = new Set([]),
            inputValue = '',
            loadedKeys,
            loadingKeys,
            filteredExpandedKeys = new Set([]),
            disabledKeys = new Set([]),
        } = this.getStates();
        const { treeNodeFilterProp, checkRelation } = this.getProps();
        const entity = keyEntities[key];
        const notExist = !entity;
        if (notExist) {
            return null;
        }
        // if checkRelation is invalid, the checked status of node will be false
        let realChecked = false;
        let realHalfChecked = false;
        if (checkRelation === 'related') {
            realChecked = checkedKeys.has(key);
            realHalfChecked = halfCheckedKeys.has(key);
        } else if (checkRelation === 'unRelated') {
            realChecked = realCheckedKeys.has(key);
            realHalfChecked = false;
        }
        const isSearching = Boolean(inputValue);
        const treeNodeProps: BasicTreeNodeProps = {
            eventKey: key,
            expanded: isSearching ? filteredExpandedKeys.has(key) : expandedKeys.has(key),
            selected: selectedKeys.includes(key),
            checked: realChecked,
            halfChecked: realHalfChecked,
            pos: String(entity ? entity.pos : ''),
            level: entity.level,
            filtered: filteredKeys.has(key),
            keyword: inputValue,
            treeNodeFilterProp,
            loading: loadingKeys.has(key) && !loadedKeys.has(key),
            loaded: loadedKeys.has(key),
        };

        if (this.getProp('disableStrictly') && disabledKeys.has(key)) {
            treeNodeProps.disabled = true;
        }

        return treeNodeProps;
    }

    handleNodeLoad(loadedKeys: Set<string>, loadingKeys: Set<string>, data: BasicTreeNodeData, resolve: (value?: any) => void) {
        const { loadData } = this.getProps();
        const { key } = data;
        if (!loadData || loadedKeys.has(key) || loadingKeys.has(key)) {
            return {};
        }
        loadData(data).then(() => {
            const prevLoadedKeys = new Set(this.getState('loadedKeys')) as Set<string>;
            const prevLoadingKeys = new Set(this.getState('loadingKeys')) as Set<string>;
            const newLoadedKeys: Set<string> = prevLoadedKeys.add(key);
            const newLoadingKeys: Set<string> = new Set([...prevLoadingKeys]);
            newLoadingKeys.delete(key);
            this._adapter.notifyLoad(newLoadedKeys, data);
            if (!this._isLoadControlled()) {
                this._adapter.updateState({
                    loadedKeys: newLoadedKeys,
                });
            }
            this._adapter.setState({
                loadingKeys: newLoadingKeys,
            } as any);
            resolve();
        });
        return {
            loadingKeys: loadingKeys.add(key),
        };
    }

    /* istanbul ignore next */
    focusInput(bool: boolean) {
        this._adapter.updateInputFocus(bool);
    }

    _notifyMultipleChange(key: string[], e: any) {
        const { keyEntities } = this.getStates();
        const { leafOnly, checkRelation, keyMaps, autoMergeValue } = this.getProps();
        let keyList = [];
        if (checkRelation === 'related') {
            keyList = autoMergeValue ? normalizeKeyList(key, keyEntities, leafOnly, true) : key;
        } else if (checkRelation === 'unRelated') {
            keyList = key as string[];
        }
        const nodes = keyList.map(key => (keyEntities[key] && keyEntities[key].key === key) ? keyEntities[key].data : this.getDataForKeyNotInKeyEntities(key));
        if (this.getProp('onChangeWithObject')) {
            this._adapter.notifyChangeWithObject(nodes, e);
        } else {
            const value = getValueOrKey(nodes, keyMaps);
            this._adapter.notifyChange(value, nodes, e);
        }
    }

    _notifyChange(key: any, e: any) {
        const { keyEntities } = this.getStates();
        const { keyMaps } = this.getProps();
        if (this._isMultiple() && Array.isArray(key)) {
            this._notifyMultipleChange(key, e);
        } else {
            const nodes = isUndefined(key) ? key : keyEntities[key].data;
            const value = isUndefined(key) ? key : getValueOrKey(nodes, keyMaps);
            if (this.getProp('onChangeWithObject')) {
                this._adapter.notifyChangeWithObject(nodes, e);
            } else {
                this._adapter.notifyChange(value, nodes, e);
            }
        }
    }

    _registerClickOutsideHandler = () => {
        this._adapter.registerClickOutsideHandler(e => {
            this.handlerTriggerBlur(e);
            this.close(e);
        });
    }

    clearInputValue = () => {
        const { inputValue } = this.getStates();
        inputValue && this._adapter.updateInputValue('');
    }

    // Scenes that may trigger focus:
    //  1、click selection
    _notifyFocus(e: any) {
        this._adapter.notifyFocus(e);
    }

    handleTriggerFocus(e: any) {
        this._adapter.updateIsFocus(true);
        this._notifyFocus(e);
        this._registerClickOutsideHandler();
    }

    onClickSingleTriggerSearchItem = (e: any) => {
        this.focusInput(true);
    }

    // Scenes that may trigger blur
    //  1、clickOutSide
    //  2、click option / press enter, and then select complete（when multiple is false
    //  3、press esc when dropdown list open
    _notifyBlur(e: any) {
        this._adapter.notifyBlur(e);
    }

    handlerTriggerBlur(e) {
        const isFocus = this.getState('isFocus');
        if (!isFocus) {
            return;
        }
        this._adapter.updateIsFocus(false);
        this._notifyBlur(e);
        this._adapter.unregisterClickOutsideHandler();
    }

    toggleHoverState(bool: boolean) {
        this._adapter.toggleHovering(bool);
    }

    open() {
        this._adapter.openMenu();
        this._setDropdownWidth();
    }

    close(e: any) {
        this._adapter.closeMenu();
        if (this.getProp('motionExpand')) {
            this._adapter.updateState({ motionKeys: new Set([]) });
        }
    }

    handleClick(e: any) {
        const isDisabled = this._isDisabled();
        const { isOpen, inputValue, isFocus } = this.getStates();
        const { searchPosition, clickTriggerToHide } = this.getProps();
        if (isDisabled) {
            return;
        } else {
            if (!isFocus) {
                this.handleTriggerFocus(e);
            }
            if (isOpen) {
                if (searchPosition === 'trigger' && inputValue) {
                    return;
                }
                clickTriggerToHide && this.close(e);
            } else {
                this.open();
            }
        }
    }

    /**
     * A11y: simulate selection click
     */
    /* istanbul ignore next */
    handleSelectionEnterPress(e: any) {
        if (isEnterPress(e)) {
            this.handleClick(e);
        }
    }

    handleClear(e: any) {
        const { searchPosition, filterTreeNode } = this.getProps();
        const { inputValue, selectedKeys } = this.getStates();
        const isMultiple = this._isMultiple();
        const isControlled = this._isControlledComponent();
        const value: string | string[] | undefined = isMultiple ? [] : undefined;
        this._notifyChange(value, e);
        if (!isControlled) {
            // reposition dropdown when selected values change
            this._adapter.rePositionDropdown();
            this._adapter.updateState({
                selectedKeys: [],
                checkedKeys: new Set(),
                halfCheckedKeys: new Set(),
                realCheckedKeys: new Set([]),
            });
        }
        // When triggerSearch, clicking the clear button will trigger to clear Input
        if (filterTreeNode && searchPosition === strings.SEARCH_POSITION_TRIGGER) {
            if (inputValue !== '') {
                if (isEmpty(selectedKeys)) {
                    this.handleInputChange('');
                } else {
                    this.clearInput();
                }
            }
        }
        this._adapter.notifyClear(e);
    }

    /**
     * A11y: simulate clear button click
     */
    /* istanbul ignore next */
    handleClearEnterPress(e: any) {
        if (isEnterPress(e)) {
            this.handleClear(e);
        }
    }

    removeTag(eventKey: BasicTreeNodeData['key']) {
        const { disableStrictly, checkRelation, keyMaps } = this.getProps();
        const { keyEntities, disabledKeys, realCheckedKeys } = this.getStates();
        const item = (keyEntities[eventKey] && keyEntities[eventKey].key === eventKey) ? keyEntities[eventKey].data : this.getDataForKeyNotInKeyEntities(eventKey);
        const disabledName = get(keyMaps, 'disabled', 'disabled');
        if (item[disabledName] || (disableStrictly && disabledKeys.has(eventKey))) {
            return;
        }
        if (checkRelation === 'unRelated') {
            const newRealCheckedKeys = new Set(realCheckedKeys);
            newRealCheckedKeys.delete(eventKey);
            this._notifyChange([...newRealCheckedKeys], null);
            if (!this._isControlledComponent()) {
                this._adapter.updateState({ realCheckedKeys: newRealCheckedKeys } as any);
                this._adapter.rePositionDropdown();
            }
        } else if (checkRelation === 'related') {
            const { checkedKeys, halfCheckedKeys } = this.calcCheckedKeys(eventKey, false);
            this._notifyChange([...checkedKeys], null);
            if (!this._isControlledComponent()) {
                this._adapter.updateState({ checkedKeys, halfCheckedKeys });
                this._adapter.rePositionDropdown();
            }
        }

        this._adapter.notifySelect(eventKey, false, item);

        // reposition dropdown when selected values change
        this._adapter.rePositionDropdown();
    }

    clearInput() {
        const { flattenNodes, expandedKeys, selectedKeys, keyEntities, treeData } = this.getStates();
        const { keyMaps } = this.getProps();
        const newExpandedKeys: Set<string> = new Set(expandedKeys);
        const isExpandControlled = this._isExpandControlled();
        const expandedOptsKeys = findAncestorKeys(selectedKeys, keyEntities, false);
        expandedOptsKeys.forEach(item => newExpandedKeys.add(item));
        const newFlattenNodes = flattenTreeData(treeData, newExpandedKeys, keyMaps);

        this._adapter.updateState({
            expandedKeys: newExpandedKeys,
            flattenNodes: newFlattenNodes,
            inputValue: '',
            motionKeys: new Set([]),
            filteredKeys: new Set([]),
            filteredExpandedKeys: new Set(expandedOptsKeys),
            filteredShownKeys: new Set([])
        });
        this._adapter.rePositionDropdown();
    }

    handleInputChange(sugInput: string) {
        // Input is used as controlled component
        this._adapter.updateInputValue(sugInput);
        const { flattenNodes, expandedKeys, selectedKeys, keyEntities, treeData } = this.getStates();
        const { showFilteredOnly, filterTreeNode, treeNodeFilterProp, keyMaps } = this.getProps();
        const realFilterProp = treeNodeFilterProp !== 'label' ? treeNodeFilterProp : get(keyMaps, 'label', 'label');
        const newExpandedKeys: Set<string> = new Set(expandedKeys);
        let filteredNodes: BasicTreeNodeData[] = [];
        let filteredOptsKeys: string[] = [];
        let expandedOptsKeys = [];
        let newFlattenNodes = [];
        let filteredShownKeys = new Set([]);
        if (!sugInput) {
            expandedOptsKeys = findAncestorKeys(selectedKeys, keyEntities, false);
            expandedOptsKeys.forEach(item => newExpandedKeys.add(item));
            newFlattenNodes = flattenTreeData(treeData, newExpandedKeys, keyMaps);
        } else {
            const filteredOpts = Object.values(keyEntities)
                .filter((item: BasicKeyEntity) => {
                    const { data } = item;
                    return filter(sugInput, data, filterTreeNode, realFilterProp);
                });
            filteredNodes = filteredOpts.map((item: BasicKeyEntity) => item.data);
            filteredOptsKeys = filteredOpts.map((item: BasicKeyEntity) => item.key);
            expandedOptsKeys = findAncestorKeys(filteredOptsKeys, keyEntities, false);
            const shownChildKeys = findDescendantKeys(filteredOptsKeys, keyEntities, true);
            filteredShownKeys = new Set([...shownChildKeys, ...expandedOptsKeys]);
            newFlattenNodes = flattenTreeData(treeData, new Set(expandedOptsKeys), keyMaps, showFilteredOnly && filteredShownKeys);
        }
        const newFilteredExpandedKeys = new Set(expandedOptsKeys);
        this._adapter.notifySearch(sugInput, Array.from(newFilteredExpandedKeys), filteredNodes);
        this._adapter.updateState({
            expandedKeys: newExpandedKeys,
            flattenNodes: newFlattenNodes,
            motionKeys: new Set([]),
            filteredKeys: new Set(filteredOptsKeys),
            filteredExpandedKeys: newFilteredExpandedKeys,
            filteredShownKeys,
        });
        this._adapter.rePositionDropdown();
    }

    handleNodeSelect(e: any, treeNode: BasicTreeNodeProps) {
        const isDisabled = this._isDisabled(treeNode);
        if (isDisabled) {
            return;
        }
        if (!this._isMultiple()) {
            this.handleSingleSelect(e, treeNode);
        } else {
            this.handleMultipleSelect(e, treeNode);
        }
    }

    handleSingleSelect(e: any, treeNode: BasicTreeNodeProps) {
        let selectedKeys = [...this.getState('selectedKeys')];
        const { clickToHide } = this.getProps();
        const { selected, eventKey, data } = treeNode;
        this._adapter.notifySelect(eventKey, true, data);

        if (!selectedKeys.includes(eventKey) && !selected) {
            selectedKeys = [eventKey];
            this._notifyChange(eventKey, e);
            if (!this._isControlledComponent()) {
                this._adapter.updateState({ selectedKeys });
            }
        }
        if (clickToHide && (this._isSelectToClose() || !data.children)) {
            this.close(e);
            this.handlerTriggerBlur(e);
        }
    }

    calcCheckedKeys(eventKey: BasicTreeNodeProps['eventKey'], targetStatus: boolean) {
        const { keyEntities } = this.getStates();
        const checkedKeys = new Set(this.getState('checkedKeys')) as Set<string>;
        const halfCheckedKeys = new Set(this.getState('halfCheckedKeys')) as Set<string>;
        if (targetStatus) {
            return calcCheckedKeysForChecked(eventKey, keyEntities, checkedKeys, halfCheckedKeys);
        } else {
            return calcCheckedKeysForUnchecked(eventKey, keyEntities, checkedKeys, halfCheckedKeys);
        }
    }

    handleMultipleSelect(e: any, treeNode: BasicTreeNodeProps) {
        const { searchPosition, disableStrictly, checkRelation } = this.getProps();
        const { inputValue, realCheckedKeys } = this.getStates();
        const { checked, eventKey, data } = treeNode;
        if (checkRelation === 'related') {
            const targetStatus = disableStrictly ?
                this.calcCheckedStatus(!checked, eventKey) :
                !checked;

            const { checkedKeys, halfCheckedKeys } = disableStrictly ?
                this.calcNonDisabledCheckedKeys(eventKey, targetStatus) :
                this.calcCheckedKeys(eventKey, targetStatus);
            this._adapter.notifySelect(eventKey, targetStatus, data);
            this._notifyChange([...checkedKeys], e);
            if (!this._isControlledComponent()) {
                this._adapter.updateState({ checkedKeys, halfCheckedKeys });
                this._adapter.rePositionDropdown();
            }
        } else if (checkRelation === 'unRelated') {
            const newRealCheckedKeys: Set<string> = new Set(realCheckedKeys);
            let targetStatus: boolean;
            if (realCheckedKeys.has(eventKey)) {
                newRealCheckedKeys.delete(eventKey);
                targetStatus = false;
            } else {
                newRealCheckedKeys.add(eventKey);
                targetStatus = true;
            }
            this._adapter.notifySelect(eventKey, targetStatus, data);
            this._notifyChange([...newRealCheckedKeys], e);
            if (!this._isControlledComponent()) {
                this._adapter.updateState({ realCheckedKeys: newRealCheckedKeys });
                this._adapter.rePositionDropdown();
            }
        }
        if (searchPosition === strings.SEARCH_POSITION_TRIGGER && inputValue !== '') {
            this._adapter.updateState({ inputValue: '' });
        }
    }

    calcNonDisabledCheckedKeys(eventKey: string, targetStatus: boolean) {
        const { keyEntities, disabledKeys } = this.getStates();
        const checkedKeys = new Set(this.getState('checkedKeys'));
        const descendantKeys = normalizeKeyList(findDescendantKeys([eventKey], keyEntities, false), keyEntities, true);
        const hasDisabled = descendantKeys.some(key => disabledKeys.has(key));
        if (!hasDisabled) {
            return this.calcCheckedKeys(eventKey, targetStatus);
        }
        const nonDisabled = descendantKeys.filter(key => !disabledKeys.has(key));
        const newCheckedKeys = targetStatus ?
            [...nonDisabled, ...checkedKeys] :
            difference(normalizeKeyList([...checkedKeys], keyEntities, true, true), nonDisabled);
        return calcCheckedKeys(newCheckedKeys, keyEntities);
    }

    calcCheckedStatus(targetStatus: boolean, eventKey: string) {
        if (!targetStatus) {
            return targetStatus;
        }
        const { checkedKeys, keyEntities, disabledKeys } = this.getStates();
        const descendantKeys = normalizeKeyList(findDescendantKeys([eventKey], keyEntities, false), keyEntities, true);
        const hasDisabled = descendantKeys.some(key => disabledKeys.has(key));
        if (!hasDisabled) {
            return targetStatus;
        }
        const nonDisabledKeys = descendantKeys.filter(key => !disabledKeys.has(key));
        const allChecked = nonDisabledKeys.every(key => checkedKeys.has(key));
        return !allChecked;
    }
    handleNodeExpandInSearch(e: any, treeNode: BasicTreeNodeProps) {
        const { treeData, filteredShownKeys, keyEntities, keyMaps } = this.getStates();
        const showFilteredOnly = this._showFilteredOnly();
        // clone otherwise will be modified unexpectedly
        const filteredExpandedKeys = new Set(this.getState('filteredExpandedKeys')) as Set<string>;
        let motionType = 'show';
        const { eventKey, expanded, data } = treeNode;

        // debugger;
        if (!expanded) {
            filteredExpandedKeys.add(eventKey);
        } else if (filteredExpandedKeys.has(eventKey)) {
            filteredExpandedKeys.delete(eventKey);
            motionType = 'hide';
        }

        // cache prev flattenNodes, otherwise the calculation will remove hidden items
        this._adapter.cacheFlattenNodes(motionType === 'hide' && this._isAnimated());

        if (!this._isExpandControlled()) {
            // debugger;
            const flattenNodes = flattenTreeData(treeData, filteredExpandedKeys, keyMaps, showFilteredOnly && filteredShownKeys);
            const motionKeys = this._isAnimated() ? getMotionKeys(eventKey, filteredExpandedKeys, keyEntities) : [];
            const newState = {
                filteredExpandedKeys,
                flattenNodes,
                motionKeys: new Set(motionKeys),
                motionType,
            };

            this._adapter.updateState(newState);
        }

        this._adapter.notifyExpand(filteredExpandedKeys, {
            expanded: !expanded,
            node: data,
        });
    }

    handleNodeExpand(e: any, treeNode: BasicTreeNodeProps) {
        // debugger;
        const { loadData, keyMaps } = this.getProps();
        const { inputValue, keyEntities } = this.getStates();
        const isSearching = Boolean(inputValue);
        if (!loadData && (!treeNode.children || !treeNode.children.length)) {
            return;
        }

        const isExpandControlled = this._isExpandControlled();
        if (isSearching) {
            this.handleNodeExpandInSearch(e, treeNode);
            return;
        }

        const { treeData } = this.getStates();
        // clone otherwise will be modified unexpectedly
        const expandedKeys = new Set(this.getState('expandedKeys')) as Set<string>;
        let motionType = 'show';
        const { eventKey, expanded, data } = treeNode;
        if (!expanded) {
            expandedKeys.add(eventKey);
        } else if (expandedKeys.has(eventKey)) {
            expandedKeys.delete(eventKey);
            motionType = 'hide';
        }
        this._adapter.cacheFlattenNodes(motionType === 'hide' && this._isAnimated());

        if (!isExpandControlled) {
            // debugger;
            const flattenNodes = flattenTreeData(treeData, expandedKeys, keyMaps);
            const motionKeys = this._isAnimated() ? getMotionKeys(eventKey, expandedKeys, keyEntities) : [];
            const newState = {
                expandedKeys,
                flattenNodes,
                motionKeys: new Set(motionKeys),
                motionType,
            };
            this._adapter.updateState(newState);
        }

        this._adapter.notifyExpand(expandedKeys, {
            expanded: !expanded,
            node: data,
        });
    }

    /**
     * The selected items that need to be displayed in the search box when obtaining a single selection
     */
    getRenderTextInSingle() {
        const { renderSelectedItem: propRenderSelectedItem, treeNodeLabelProp, keyMaps } = this.getProps();
        const { selectedKeys, keyEntities } = this.getStates();
        const realLabelName = get(keyMaps, 'label', treeNodeLabelProp);
        const renderSelectedItem = isFunction(propRenderSelectedItem) ?
            propRenderSelectedItem :
            (item: BasicTreeNodeData) => get(item, realLabelName, null);
        let item;
        if (selectedKeys.length) {
            const key = selectedKeys[0];
            item = (keyEntities[key] && keyEntities[key].key === key) ? keyEntities[key].data : this.getDataForKeyNotInKeyEntities(key);
        }
        const renderText = item ? renderSelectedItem(item) : null;
        return renderText;
    }

    /**
     * When the search box is on the trigger, the blur event handling method
     */
    handleInputTriggerBlur() {
        this._adapter.updateState({
            inputTriggerFocus: false
        });
    }

    /**
     * When the search box is on the trigger, the focus event processing method
     */
    handleInputTriggerFocus() {
        const inputValue = this.getState('inputValue');
        inputValue && this.clearInput();
        this._adapter.updateState({
            inputTriggerFocus: true
        });
    }

    setLoadKeys(data: BasicTreeNodeData, resolve: (value?: any) => void) {
        this._adapter.updateLoadKeys(data, resolve);
    }

    handlePopoverVisibleChange(isVisible: boolean) {
        const { filterTreeNode, searchAutoFocus, searchPosition } = this.getProps();
        const inputValue = this.getState('inputValue');
        // 将 inputValue 清空，如果有选中值的话，选中项能够快速回显
        // Clear the inputValue. If there is a selected value, the selected item can be quickly echoed.
        if (isVisible === false && filterTreeNode) {
            inputValue && this._adapter.setClearInputFlag(true);
            this.clearInputValue(); 
        }
        if (filterTreeNode && searchPosition === strings.SEARCH_POSITION_DROPDOWN && isVisible && searchAutoFocus) {
            this.focusInput(true);
        }
    }

    handleAfterClose() {
        // flattenNode 的变化将导致弹出层面板中的选项数目变化
        // 在弹层完全收起之后，再通过 clearInput 重新计算 state 中的 expandedKey， flattenNode
        // 防止在弹出层未收起时弹层面板中选项数目变化导致视觉上出现弹层闪动问题
        // Changes to flattenNode will cause the number of options in the popup panel to change
        // After the pop-up layer is completely closed, recalculate the expandedKey and flattenNode in the state through clearInput.
        // Prevent the pop-up layer from flickering visually due to changes in the number of options in the pop-up panel when the pop-up layer is not collapsed.
        const { filterTreeNode } = this.getProps();
        const shouldClear = this._adapter.getClearInputFlag();
        filterTreeNode && shouldClear && this.clearInput();
    }
}