hs-library
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Optimistic UI library for React and Next.js. Modern, reusable components: Inputs, Buttons, Cards, Dropdowns, Modals, Toasts — and more magical UI tools for frontend developers. author: Hitesh Saini
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JavaScript
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import React, { useState, useEffect, useRef, useCallback } from "react";
import "./index.css";
import { jsx as _jsx, jsxs as _jsxs } from "react/jsx-runtime";
var MultiSelectDropdown = /*#__PURE__*/React.memo(function (_ref) {
var id = _ref.id,
label = _ref.label,
_ref$options = _ref.options,
options = _ref$options === void 0 ? [] : _ref$options,
_ref$formData = _ref.formData,
formData = _ref$formData === void 0 ? {} : _ref$formData,
_ref$required = _ref.required,
required = _ref$required === void 0 ? false : _ref$required,
_ref$onSelect = _ref.onSelect,
onSelect = _ref$onSelect === void 0 ? function () {} : _ref$onSelect,
_ref$setFormData = _ref.setFormData,
setFormData = _ref$setFormData === void 0 ? function () {} : _ref$setFormData,
_ref$onSearch = _ref.onSearch,
onSearch = _ref$onSearch === void 0 ? null : _ref$onSearch,
_ref$disabled = _ref.disabled,
disabled = _ref$disabled === void 0 ? false : _ref$disabled,
RenderComponent = _ref.RenderComponent,
_ref$noResultsFound = _ref.noResultsFound,
noResultsFound = _ref$noResultsFound === void 0 ? "No results found" : _ref$noResultsFound,
_ref$className = _ref.className,
className = _ref$className === void 0 ? "" : _ref$className,
_ref$style = _ref.style,
style = _ref$style === void 0 ? {} : _ref$style;
var _useState = useState(""),
_useState2 = _slicedToArray(_useState, 2),
search = _useState2[0],
setSearch = _useState2[1];
var _useState3 = useState(false),
_useState4 = _slicedToArray(_useState3, 2),
isOpen = _useState4[0],
setIsOpen = _useState4[1];
var _useState5 = useState(options),
_useState6 = _slicedToArray(_useState5, 2),
results = _useState6[0],
setResults = _useState6[1];
var _useState7 = useState(false),
_useState8 = _slicedToArray(_useState7, 2),
loading = _useState8[0],
setLoading = _useState8[1];
var _useState9 = useState([]),
_useState0 = _slicedToArray(_useState9, 2),
selectedOptions = _useState0[0],
setSelectedOptions = _useState0[1];
var dropdownRef = useRef(null);
var debounceTimeout = useRef(null);
var OptionRenderer = RenderComponent || function (_ref2) {
var opt = _ref2.opt;
return /*#__PURE__*/_jsx("span", {
children: opt === null || opt === void 0 ? void 0 : opt.label
});
};
// close on outside click
var handleOutsideClick = useCallback(function (e) {
if (dropdownRef.current && !dropdownRef.current.contains(e.target)) {
setIsOpen(false);
setSearch("");
}
}, []);
useEffect(function () {
document.addEventListener("mousedown", handleOutsideClick);
return function () {
return document.removeEventListener("mousedown", handleOutsideClick);
};
}, [handleOutsideClick]);
// handle select/deselect
var handleSelect = useCallback(function (value, fullOption) {
var newSelected;
if (selectedOptions.some(function (opt) {
return opt.id === fullOption.id;
})) {
newSelected = selectedOptions.filter(function (opt) {
return opt.id !== fullOption.id;
});
} else {
newSelected = [].concat(_toConsumableArray(selectedOptions), [fullOption]);
}
setSelectedOptions(newSelected);
setFormData(function (prev) {
return _objectSpread(_objectSpread({}, prev), {}, _defineProperty({}, id, newSelected.map(function (opt) {
return opt.id;
})));
});
onSelect(newSelected);
}, [id, selectedOptions, onSelect, setFormData]);
// sync from formData
useEffect(function () {
var currentValues = (formData === null || formData === void 0 ? void 0 : formData[id]) || [];
if (currentValues.length && options.length > 0) {
var matches = options.filter(function (opt) {
return currentValues.includes(opt.id);
});
setSelectedOptions(matches);
}
}, [formData, id, options]);
// debounce + async/local search
useEffect(function () {
if (!isOpen) {
setLoading(false);
setResults(options);
setSearch("");
return;
}
if (debounceTimeout.current) clearTimeout(debounceTimeout.current);
debounceTimeout.current = setTimeout(/*#__PURE__*/_asyncToGenerator(/*#__PURE__*/_regenerator().m(function _callee() {
var term, localMatches, fetched, _t;
return _regenerator().w(function (_context) {
while (1) switch (_context.p = _context.n) {
case 0:
term = search.trim().toLowerCase();
if (!term) {
_context.n = 1;
break;
}
localMatches = options.filter(function (opt) {
var _opt$label;
return opt === null || opt === void 0 || (_opt$label = opt.label) === null || _opt$label === void 0 ? void 0 : _opt$label.toLowerCase().includes(term);
});
if (!(localMatches.length > 0)) {
_context.n = 1;
break;
}
setResults(localMatches);
setLoading(false);
return _context.a(2);
case 1:
if (!onSearch) {
_context.n = 6;
break;
}
setLoading(true);
_context.p = 2;
_context.n = 3;
return onSearch(search);
case 3:
fetched = _context.v;
setResults(Array.isArray(fetched) ? fetched : []);
_context.n = 5;
break;
case 4:
_context.p = 4;
_t = _context.v;
setResults([]);
case 5:
setLoading(false);
_context.n = 7;
break;
case 6:
setResults(options);
setLoading(false);
case 7:
return _context.a(2);
}
}, _callee, null, [[2, 4]]);
})), 300);
return function () {
return clearTimeout(debounceTimeout.current);
};
}, [search, isOpen, onSearch, options]);
return /*#__PURE__*/_jsxs("div", {
className: "hs_container ".concat(className),
style: style,
ref: dropdownRef,
children: [label && /*#__PURE__*/_jsxs("label", {
htmlFor: id,
className: "hs_label",
children: [label, " ", required && /*#__PURE__*/_jsx("span", {
className: "hs_required",
children: "*"
})]
}), /*#__PURE__*/_jsx("div", {
className: "hs_multiWrapper ".concat(disabled ? "hs_disabled" : ""),
onClick: function onClick() {
return !disabled && setIsOpen(function (prev) {
return !prev;
});
},
children: selectedOptions.length > 0 ? selectedOptions.map(function (opt) {
return /*#__PURE__*/_jsxs("span", {
className: "hs_chip",
children: [opt.label, /*#__PURE__*/_jsx("button", {
type: "button",
className: "hs_chipRemove",
onClick: function onClick(e) {
e.stopPropagation();
handleSelect(opt.id, opt);
},
children: "\u2715"
})]
}, opt.id);
}) : /*#__PURE__*/_jsxs("span", {
className: "hs_multiPlaceholder",
children: ["Select ", label]
})
}), isOpen && !disabled && /*#__PURE__*/_jsxs("div", {
className: "hs_dropdown",
role: "listbox",
id: "".concat(id, "-listbox"),
children: [/*#__PURE__*/_jsx("div", {
className: "hs_searchWrapper",
children: /*#__PURE__*/_jsx("input", {
type: "text",
value: search,
onChange: function onChange(e) {
return setSearch(e.target.value);
},
placeholder: "Search ".concat(label),
className: "hs_searchInput",
autoFocus: true,
"aria-label": "Search ".concat(label)
})
}), loading ? /*#__PURE__*/_jsx("div", {
className: "hs_message",
children: "Searching..."
}) : results.length > 0 ? results.map(function (opt) {
var _opt$value;
var selected = selectedOptions.some(function (s) {
return s.id === opt.id;
});
return /*#__PURE__*/_jsxs("div", {
onClick: function onClick() {
var _opt$value2;
return handleSelect((_opt$value2 = opt === null || opt === void 0 ? void 0 : opt.value) !== null && _opt$value2 !== void 0 ? _opt$value2 : opt === null || opt === void 0 ? void 0 : opt.id, opt);
},
className: "hs_option ".concat(selected ? "hs_optionSelected" : ""),
role: "option",
"aria-selected": selected,
tabIndex: 0,
onKeyDown: function onKeyDown(e) {
if (e.key === "Enter" || e.key === " ") {
var _opt$value3;
e.preventDefault();
handleSelect((_opt$value3 = opt === null || opt === void 0 ? void 0 : opt.value) !== null && _opt$value3 !== void 0 ? _opt$value3 : opt === null || opt === void 0 ? void 0 : opt.id, opt);
}
},
children: [/*#__PURE__*/_jsx("input", {
type: "checkbox",
checked: selected,
readOnly: true,
className: "hs_checkbox"
}), /*#__PURE__*/_jsx(OptionRenderer, {
opt: opt
})]
}, (_opt$value = opt === null || opt === void 0 ? void 0 : opt.value) !== null && _opt$value !== void 0 ? _opt$value : opt === null || opt === void 0 ? void 0 : opt.id);
}) : /*#__PURE__*/_jsx("div", {
className: "hs_message",
children: noResultsFound
})]
})]
});
});
export default MultiSelectDropdown;