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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | 1723x 1723x 1723x 3760x 1723x 1276x 56x 56x 1276x 1276x 1723x 9x 4x 7x 7x 1723x 14x 1723x 27x 1491x 1491x 11x 11x 79x 79x 79x 9x | import { useState, useRef, useEffect, useMemo } from "react";
import { X } from "lucide-react";
import { cn } from "../../lib/utils";
type MultiSelectProps = {
options: { value: string; label: string }[];
selected: string[];
onChange: (values: string[]) => void;
placeholder?: string;
maxItems?: number;
id?: string;
"aria-label"?: string;
"aria-labelledby"?: string;
className?: string;
};
export function MultiSelect({
options,
selected,
onChange,
placeholder = "Select options...",
maxItems,
id,
"aria-label": ariaLabel,
"aria-labelledby": ariaLabelledBy,
className,
}: MultiSelectProps) {
const [isOpen, setIsOpen] = useState(false);
const containerRef = useRef<HTMLDivElement>(null);
// O(1) option lookup by value
const optionMap = useMemo(
() => new Map(options.map((opt) => [opt.value, opt])),
[options],
);
useEffect(() => {
const handleClickOutside = (event: MouseEvent) => {
Eif (
containerRef.current &&
!containerRef.current.contains(event.target as Node)
) {
setIsOpen(false);
}
};
document.addEventListener("mousedown", handleClickOutside);
return () => document.removeEventListener("mousedown", handleClickOutside);
}, []);
const handleToggle = (value: string) => {
if (selected.includes(value)) {
onChange(selected.filter((v) => v !== value));
} else {
Iif (maxItems && selected.length >= maxItems) {
return;
}
onChange([...selected, value]);
}
};
const handleRemove = (value: string) => {
onChange(selected.filter((v) => v !== value));
};
return (
<div ref={containerRef} className={cn("relative", className)}>
<div
role="combobox"
tabIndex={0}
id={id}
aria-label={ariaLabel}
aria-labelledby={ariaLabelledBy}
aria-expanded={isOpen}
aria-haspopup="listbox"
className="flex min-h-[40px] w-full flex-wrap gap-2 rounded-md border border-border-default bg-background-elevated px-3 py-2 text-sm text-foreground-default cursor-pointer hover:border-border-strong transition-colors text-left"
onClick={() => setIsOpen(!isOpen)}
onKeyDown={(e) => {
if (e.key === "Enter" || e.key === " ") {
e.preventDefault();
setIsOpen(!isOpen);
}
}}
>
{selected.length === 0 ? (
<span className="text-foreground-subtle">{placeholder}</span>
) : (
selected.map((value) => {
const option = optionMap.get(value);
return (
<span
key={value}
className="inline-flex items-center gap-1 rounded bg-primary-100 px-2 py-1 text-xs font-medium text-primary-800"
>
{option?.label || value}
<button
type="button"
aria-label={`Remove ${option?.label || value}`}
onClick={(e) => {
e.stopPropagation();
handleRemove(value);
}}
className="hover:text-primary-900"
>
<X className="h-3 w-3" />
</button>
</span>
);
})
)}
</div>
{isOpen && (
<div className="absolute z-10 mt-1 max-h-60 w-full overflow-auto rounded-md border border-border-default bg-background-elevated shadow-lg">
{options.length === 0 ? (
<div className="px-3 py-2 text-sm text-foreground-muted">
No options available
</div>
) : (
options.map((option) => {
const isSelected = selected.includes(option.value);
const isDisabled =
!isSelected && maxItems && selected.length >= maxItems;
return (
<label
key={option.value}
className={cn(
"flex items-center px-3 py-2 text-sm cursor-pointer hover:bg-background-muted",
isSelected && "bg-primary-50 text-primary-900 font-medium",
isDisabled &&
"opacity-50 cursor-not-allowed pointer-events-none",
)}
>
<input
type="checkbox"
checked={isSelected}
onChange={() => !isDisabled && handleToggle(option.value)}
className="mr-2 accent-primary-500"
disabled={isDisabled || undefined}
/>
{option.label}
</label>
);
})
)}
</div>
)}
</div>
);
}
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