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import { Box, SxProps, TooltipProps } from '@mui/material';
import Icon from '../Icon/Icon';
import IconTooltip from '../IconTooltip';
import PillList, { PillListItem } from '../PillList';
import './styles.scss';
const OPTIONS_MAX_HEIGHT = 140;
const VIEWPORT_MARGIN = 8;
const getVerticalFrameHeight = (element: HTMLElement) => {
const style = getComputedStyle(element);
const spacing = [style.paddingTop, style.paddingBottom, style.marginTop, style.marginBottom].reduce(
(total, value) => total + (parseFloat(value) || 0),
0
);
return element.offsetHeight - element.clientHeight + spacing;
};
export type MultiSelectProps<K, V> = {
className?: string;
disabled?: boolean;
fullWidth?: boolean;
helperText?: string;
errorText?: string;
fixedMenu?: boolean;
id?: string;
label?: string;
missingValuePlaceholder?: string;
onAdd: (item: K) => void;
onBlur?: () => void;
onFocus?: () => void;
onPillClick?: (item: K) => void;
onRemove: (item: K) => void;
options: Map<K, V>;
optionsVisible?: boolean;
pillListClassName?: string;
placeHolder?: string;
selectedOptions: K[];
sx?: SxProps;
tooltipTitle?: TooltipProps['title'];
valueRenderer: (value: V) => string;
};
export default function MultiSelect<K, V>(props: MultiSelectProps<K, V>): JSX.Element {
const {
className,
disabled,
fullWidth,
helperText,
errorText,
fixedMenu,
id,
label,
missingValuePlaceholder,
onAdd,
onRemove,
onPillClick,
options,
optionsVisible,
pillListClassName,
placeHolder,
selectedOptions,
sx,
tooltipTitle,
valueRenderer,
} = props;
const [openedOptions, setOpenedOptions] = useState(false);
const [fixedMenuStyle, setFixedMenuStyle] = useState<CSSProperties>();
const optionsContainerRef = useRef<HTMLDivElement>(null);
const optionsRef = useRef<HTMLUListElement>(null);
const positionFixedMenu = useCallback(() => {
const trigger = optionsContainerRef.current?.parentElement;
Iif (!optionsContainerRef.current || !trigger) {
return;
}
const { top, left, width } = optionsContainerRef.current.getBoundingClientRect();
const triggerTop = trigger.getBoundingClientRect().top;
const spaceBelow = window.innerHeight - top - VIEWPORT_MARGIN;
const spaceAbove = triggerTop - VIEWPORT_MARGIN;
const placeAbove = spaceBelow < OPTIONS_MAX_HEIGHT && spaceAbove > spaceBelow;
const menuFrameHeight = optionsRef.current ? getVerticalFrameHeight(optionsRef.current) : 0;
setFixedMenuStyle({
position: 'fixed',
left,
width: width - 2,
maxHeight: Math.max(0, Math.min(OPTIONS_MAX_HEIGHT, (placeAbove ? spaceAbove : spaceBelow) - menuFrameHeight)),
...(placeAbove ? { top: 'auto', bottom: window.innerHeight - triggerTop } : { top }),
});
}, []);
const toggleOptions = () => {
setOpenedOptions((isOpen) => !isOpen && !disabled);
Iif (props.onFocus) {
props.onFocus();
}
};
useEffect(() => {
Iif (optionsVisible !== undefined) {
setOpenedOptions(optionsVisible);
}
}, [optionsVisible]);
const unselectedOptions = Array.from<K>(options.keys()).filter((key: K) => !selectedOptions.includes(key));
const optionsShown = options && unselectedOptions.length > 0 && openedOptions;
useLayoutEffect(() => {
if (!fixedMenu || !optionsShown) {
return;
}
positionFixedMenu();
window.addEventListener('scroll', positionFixedMenu, true);
window.addEventListener('resize', positionFixedMenu);
const triggerObserver = new ResizeObserver(positionFixedMenu);
Eif (optionsContainerRef.current?.parentElement) {
triggerObserver.observe(optionsContainerRef.current.parentElement);
}
return () => {
window.removeEventListener('scroll', positionFixedMenu, true);
window.removeEventListener('resize', positionFixedMenu);
triggerObserver.disconnect();
};
}, [fixedMenu, optionsShown, positionFixedMenu]);
const onBlurHandler = (event: any) => {
// In Chrome > 126, the onBlur event will fire even if you are clicking _within_ the focused element
// If this is the case, we do not actually want to blur
if (event.currentTarget.contains(event.relatedTarget)) {
return;
}
setOpenedOptions(false);
if (props.onBlur) {
props.onBlur();
}
};
const valuesPillData = selectedOptions
.map((item) => {
const value = options.get(item);
return {
id: item,
value: value ? valueRenderer(value) : missingValuePlaceholder || '',
};
})
.filter((data) => data.value) as PillListItem<K>[];
return (
<Box className={`multi-select ${className}`} sx={sx}>
{label && (
<label htmlFor={id} className='multi-select__label'>
{label} {tooltipTitle && <IconTooltip title={tooltipTitle} />}
</label>
)}
<div
className={`multi-select__container ${fullWidth ? 'multi-select__container--fullWidth' : ''}`}
onBlur={onBlurHandler}
tabIndex={0}
>
<div
id={id}
className={`multi-select__values${disabled ? '--disabled' : ''}${openedOptions ? ' open' : ''}${
errorText ? ' error' : ''
}`}
onClick={toggleOptions}
>
{selectedOptions.length > 0 ? (
<PillList data={valuesPillData} onRemove={onRemove} onClick={onPillClick} className={pillListClassName} />
) : (
<p className='multi-select__placeholder-text'>{placeHolder}</p>
)}
<div className={'multi-select__values__icon-button'} aria-label='show-options'>
<Icon
name={openedOptions ? 'chevronUp' : 'chevronDown'}
className={`multi-select__values__icon-right${disabled ? '--disabled' : ''}`}
/>
</div>
</div>
{optionsShown && (
<div className='multi-select__options-container' ref={optionsContainerRef}>
<ul
className={`multi-select__options${fixedMenu && fixedMenuStyle?.bottom !== undefined ? ' multi-select__options--above' : ''}`}
ref={optionsRef}
style={fixedMenu ? fixedMenuStyle : undefined}
>
{unselectedOptions.map((optionKey, index) => {
const optionValue = options.get(optionKey);
return (
<li key={index} className='select-value' onClick={() => onAdd(optionKey)}>
{optionValue ? valueRenderer(optionValue) : missingValuePlaceholder || ''}
</li>
);
})}
</ul>
</div>
)}
</div>
{helperText && (
<label htmlFor={id} className='multi-select__help-text'>
{helperText}
</label>
)}
{errorText && (
<div className='multi-select__error'>
<Icon name='error' className='multi-select__error-icon' />
<label htmlFor={id} className='multi-select__error-text'>
{errorText}
</label>
</div>
)}
</Box>
);
}
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