preact-arco-design/es/TreeSelect/tree-select.js

Arco Design React UI Library.

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import React, { forwardRef, useContext, useEffect, useRef, useState, useImperativeHandle, useMemo, useCallback } from "preact/compat";
import debounce from 'lodash/debounce';
import useStateValue, { parseValue } from "./hook/useStateValue";
import { normalizeValueToArray } from "./utils";
import { isArray, isFunction, isObject } from "../_util/is";
import Trigger from "../Trigger";
import Tree from "../Tree";
import { ConfigContext } from "../ConfigProvider";
import { getAllCheckedKeysByCheck } from "../Tree/util";
import SelectView from "../_class/select-view";
import { DefaultFieldNames } from "./interface";
import useTreeData from "./hook/useTreeData";
import useKeyCache from "./hook/useKeyCache";
import TreeList from "./tree-list";
import useMergeValue from "../_util/hooks/useMergeValue";
import cs from "../_util/classNames";
import useMergeProps from "../_util/hooks/useMergeProps";

function isEmptyValue(value) {
  return !value || isArray(value) && value.length === 0 || isObject(value) && Object.keys(value).length === 0;
} // Generate DOM id for instance


var globalTreeSelectIndex = 0;
var defaultProps = {
  bordered: true,
  treeCheckedStrategy: Tree.SHOW_CHILD,
  fieldNames: DefaultFieldNames
};

var TreeSelect = function TreeSelect(baseProps, ref) {
  var _a = useContext(ConfigContext),
      getPrefixCls = _a.getPrefixCls,
      renderEmpty = _a.renderEmpty,
      componentConfig = _a.componentConfig,
      rtl = _a.rtl;

  var props = useMergeProps(baseProps, defaultProps, componentConfig === null || componentConfig === void 0 ? void 0 : componentConfig.TreeSelect);
  var triggerRef = useRef();
  var treeRef = useRef(null);
  var refSelectView = useRef(null);
  var indeterminateKeys = useRef([]);

  var _b = __read(useTreeData(props), 1),
      treeData = _b[0];

  var key2nodeProps = useKeyCache(treeData, props.fieldNames);

  var _c = __read(useState(), 2),
      hitKeys = _c[0],
      setHitKeys = _c[1];

  var _d = __read(useMergeValue(false, {
    value: props.popupVisible
  }), 2),
      popupVisible = _d[0],
      setPopupVisible = _d[1];

  var _e = __read(useState(), 2),
      inputValue = _e[0],
      setInputValue = _e[1];

  var _f = __read(useStateValue(props, key2nodeProps, indeterminateKeys), 2),
      value = _f[0],
      setValue = _f[1];

  var multiple = props.multiple || props.treeCheckable;
  var prefixCls = getPrefixCls('tree-select');
  var isFilterNode = inputValue && !isFunction(props.onSearch); // Unique ID of this select instance

  var instancePopupID = useMemo(function () {
    var id = "".concat(prefixCls, "-popup-").concat(globalTreeSelectIndex);
    globalTreeSelectIndex++;
    return id;
  }, []);
  var handleSearch = useCallback(function (inputText) {
    var search = debounce(function (inputText) {
      return __awaiter(void 0, void 0, void 0, function () {
        var hitKeys;
        return __generator(this, function (_a) {
          switch (_a.label) {
            case 0:
              if (!isFunction(props.onSearch)) return [3
              /*break*/
              , 2];
              return [4
              /*yield*/
              , props.onSearch(inputText)];

            case 1:
              _a.sent();

              return [2
              /*return*/
              ];

            case 2:
              if (!inputText) return [2
              /*return*/
              , treeData];
              hitKeys = new Set();
              Object.keys(key2nodeProps).forEach(function (key) {
                var nodeProps = key2nodeProps[key];
                var isHit = false;

                if (isFunction(props.filterTreeNode)) {
                  // @ts-ignore
                  if (props.filterTreeNode(inputText, React.createElement(Tree.Node, __assign({}, nodeProps)))) {
                    isHit = true;
                  }
                } else {
                  var text = nodeProps.value || nodeProps._key;

                  if (text && text.indexOf(inputText) > -1) {
                    isHit = true;
                  }
                }

                if (isHit) {
                  hitKeys.add(nodeProps.key);
                }
              });
              setHitKeys(hitKeys);
              return [2
              /*return*/
              ];
          }
        });
      });
    }, 100);
    return search(inputText);
  }, [props.onSearch, treeData, key2nodeProps, props.filterTreeNode]);

  var resetInputValue = function resetInputValue() {
    // 多选选中值时候不清除搜索文本
    var retainInputValueWhileSelect = true;

    if (isObject(props.showSearch)) {
      retainInputValueWhileSelect = props.showSearch.retainInputValueWhileSelect !== false;
    }

    if (props.multiple && !retainInputValueWhileSelect) {
      setInputValue('');
      handleSearch('');
    }
  };

  var triggerChange = useCallback(function (newValue, extra) {
    setValue(newValue, extra);
    resetInputValue();

    if (!multiple) {
      setPopupVisible(false);
    }
  }, [setValue]);

  var handleRemoveCheckedItem = function handleRemoveCheckedItem(item, index, e) {
    e.stopPropagation();

    if (item.disabled) {
      return;
    }

    if (!props.treeCheckable || props.treeCheckStrictly || !key2nodeProps[item.value]) {
      var newValue = value.filter(function (_, i) {
        return i !== index;
      });
      triggerChange(newValue, {
        trigger: key2nodeProps[item.value] || item,
        checked: false,
        selected: false
      });
      return;
    }

    var result = getAllCheckedKeysByCheck(item.value, false, normalizeValueToArray(value), key2nodeProps, indeterminateKeys.current);
    indeterminateKeys.current = result.indeterminateKeys;
    triggerChange(parseValue(result.checkedKeys, key2nodeProps, value), {
      trigger: key2nodeProps[item.value],
      checked: false,
      selected: false
    });
  };

  useEffect(function () {
    inputValue !== undefined && handleSearch(inputValue);
  }, [inputValue]);
  var searchKeys = useMemo(function () {
    var newKeys = [];

    if (inputValue) {
      for (var key in key2nodeProps) {
        var item = key2nodeProps[key];

        var pathKeys = __spreadArray(__spreadArray([], __read(item.pathParentKeys), false), [key], false);

        if (pathKeys.some(function (_key) {
          return hitKeys && hitKeys.has(_key);
        })) {
          newKeys = newKeys.concat(pathKeys);
        }
      }
    }

    return Array.from(new Set(newKeys));
  }, [inputValue, key2nodeProps, hitKeys]);
  useEffect(function () {
    popupVisible && setTimeout(function () {
      var target = value[0];

      if (treeRef.current && target) {
        treeRef.current.scrollIntoView(target.value);
      }
    });
    inputValue && setInputValue('');
  }, [popupVisible]);
  useImperativeHandle(ref, function () {
    return {
      focus: function focus() {
        refSelectView.current && refSelectView.current.focus();
      },
      blur: function blur() {
        refSelectView.current && refSelectView.current.blur();
      }
    };
  });
  var filterNode = useCallback(function (node) {
    return isFilterNode ? searchKeys.indexOf(node._key) > -1 : true;
  }, [isFilterNode, searchKeys]);
  var renderText = useCallback(function (val) {
    var _a = val || {},
        _b = _a.label,
        label = _b === void 0 ? '' : _b,
        disabled = _a.disabled;

    return {
      text: label,
      disabled: disabled
    };
  }, []);

  var tryUpdateSelectValue = function tryUpdateSelectValue(value) {
    setValue(value, {});
  };

  return React.createElement(Trigger, __assign({
    autoAlignPopupWidth: false,
    autoAlignPopupMinWidth: true,
    ref: triggerRef,
    classNames: "slideDynamicOrigin",
    trigger: "click",
    position: "bl",
    getPopupContainer: props.getPopupContainer,
    popupAlign: {
      bottom: 4
    },
    unmountOnExit: props.unmountOnExit
  }, props.triggerProps, {
    className: cs("".concat(prefixCls, "-trigger"), props.triggerProps && props.triggerProps.className),
    popup: function popup() {
      var _a;

      var _b, _c, _d;

      var dropdownRender = props.dropdownRender;
      var dom = isFilterNode && isEmptyValue(searchKeys) || isEmptyValue(treeData) ? props.notFoundContent || renderEmpty('TreeSelect') : React.createElement(TreeList, __assign({
        prefixCls: prefixCls,
        ref: treeRef
      }, props, {
        inputValue: inputValue,
        filterNode: filterNode,
        value: value,
        onChange: triggerChange,
        multiple: multiple,
        treeData: treeData
      }));
      return React.createElement("div", {
        id: instancePopupID,
        className: cs("".concat(prefixCls, "-popup"), (_a = {}, _a["".concat(prefixCls, "-rtl-popup")] = rtl, _a)),
        style: __assign({
          maxHeight: ((_b = props.treeProps) === null || _b === void 0 ? void 0 : _b.height) || ((_d = (_c = props.treeProps) === null || _c === void 0 ? void 0 : _c.virtualListProps) === null || _d === void 0 ? void 0 : _d.height) ? 'unset' : ''
        }, props.dropdownMenuStyle)
      }, isFunction(dropdownRender) ? dropdownRender(dom) : dom);
    },
    disabled: props.disabled,
    onVisibleChange: function onVisibleChange(visible) {
      setPopupVisible(visible);
      props.onVisibleChange && props.onVisibleChange(visible);
    },
    popupVisible: popupVisible
  }), typeof props.triggerElement === 'function' ? function () {
    var _a;

    var valueForCallback;

    if (multiple) {
      valueForCallback = value.map(function (x) {
        return props.labelInValue ? {
          label: x.label,
          value: x.value
        } : x.value;
      });
    } else {
      valueForCallback = props.labelInValue ? value[0] : (_a = value[0]) === null || _a === void 0 ? void 0 : _a.value;
    }

    return props.triggerElement({
      value: valueForCallback
    });
  }() : props.triggerElement || React.createElement(SelectView, __assign({
    ref: refSelectView,
    rtl: rtl,
    ariaControls: instancePopupID
  }, props, {
    popupVisible: popupVisible,
    value: !multiple && isArray(value) ? value[0] : value,
    inputValue: inputValue,
    // other
    isEmptyValue: isEmptyValue(value),
    prefixCls: prefixCls,
    isMultiple: multiple,
    renderText: renderText,
    onSort: tryUpdateSelectValue,
    onRemoveCheckedItem: handleRemoveCheckedItem,
    onClear: function onClear(e) {
      e.stopPropagation();
      triggerChange([], {});
      props.onClear && props.onClear(!!popupVisible);
    },
    onKeyDown: function onKeyDown(e) {
      e.stopPropagation();
    },
    onFocus: function onFocus(e) {
      e && e.stopPropagation();
    },
    onChangeInputValue: function onChangeInputValue(input) {
      setInputValue(input);
    }
  })));
};

var ForwardRefTreeSelect = forwardRef(TreeSelect);
var TreeSelectComponent = ForwardRefTreeSelect;
TreeSelectComponent.displayName = 'TreeSelect';
TreeSelectComponent.Node = Tree.Node;
TreeSelectComponent.SHOW_ALL = Tree.SHOW_ALL;
TreeSelectComponent.SHOW_PARENT = Tree.SHOW_PARENT;
TreeSelectComponent.SHOW_CHILD = Tree.SHOW_CHILD;
export default TreeSelectComponent;