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import './Dropdown.scss';
import ChevronIcon from '@assets/images/chevron.svg?react';
import { ForwardedRef, forwardRef, useEffect, useRef, useState } from 'react';
const useIsOpened = () => {
const [isOpened, setIsOpened] = useState<boolean>(false);
const ref = useRef<HTMLButtonElement>(null);
useEffect(() => {
const handleClickOutside = (event: MouseEvent) => {
if (!ref.current?.contains(event.target as Node)) {
setIsOpened(!isOpened);
}
};
document.addEventListener('click', handleClickOutside, !isOpened);
return () => {
document.removeEventListener('click', handleClickOutside, !isOpened);
};
}, [isOpened]);
return { ref, isOpened, setIsOpened };
};
const sparkClassNames = {
dropdown: 'spark-dropdown spark-dropdown-primary spark-dropdown-size-m',
dropdownButton:
'spark-button spark-button-action spark-button-size-m spark-focus-visible spark-focus-visible-self spark-focus-visible-snap spark-dropdown-button spark-focus-visible spark-focus-visible-self spark-focus-visible-snap',
dropdownButtonContent: 'spark-button-content',
dropdownButtonLabel: 'spark-dropdown-button-label',
dropdownButtonIcon: 'spark-icon spark-icon-regular spark-dropdown-arrow-icon',
popover: 'spark-popover spark-shadow',
dropdownListWrapper:
'spark-scrollbar spark-scrollbar-y spark-focus-visible spark-focus-visible-self spark-focus-visible-snap spark-dropdown-list-box-scroll',
dropdownList: 'spark-list spark-list-size-m spark-dropdown-list-box spark-dropdown-primary',
dropdownListItem: 'spark-list-item',
dropdownListActiveItem: 'spark-list-is-focused',
dropdownListItemText: 'spark-list-item-text',
} as const;
type DropdownPopoverProps = {
items: { text: string; onClick: () => void }[];
direction: DropdownProps['direction'];
selectedOption: string | null;
};
const DropdownPopover = forwardRef(function DropdownPopover(
{ items, selectedOption, direction = 'bottom' }: DropdownPopoverProps,
ref: ForwardedRef<HTMLDivElement>
): JSX.Element {
const directionClassName = `dropdown-popover-${direction}`;
return (
<div ref={ref} className={`${sparkClassNames.popover} ${directionClassName}`}>
<div tabIndex={-1} className={sparkClassNames.dropdownListWrapper} role="group">
<ul className={sparkClassNames.dropdownList} role="listbox" tabIndex={-1}>
{items.map(({ text, onClick }, i) => (
<li
key={`dropdown-item-${i}-${text}`}
className={`${sparkClassNames.dropdownListItem} ${
text === selectedOption ? sparkClassNames.dropdownListActiveItem : ''
}`}
role="option"
tabIndex={0}
onClick={onClick}
>
<span className={sparkClassNames.dropdownListItemText}>{text}</span>
</li>
))}
</ul>
</div>
</div>
);
});
type DropdownProps = {
options: string[];
selectedOption: string | null;
onSelect: (value: string) => void;
placeholder?: string;
selectedPrefix?: string;
className?: string;
direction?: 'bottom' | 'top';
};
export const Dropdown = ({
options,
selectedOption,
onSelect,
placeholder = 'Select an Option',
selectedPrefix = '',
className = '',
direction = 'bottom',
}: DropdownProps): JSX.Element => {
const { ref, isOpened, setIsOpened } = useIsOpened();
const selectedOptionText = selectedPrefix ? `${selectedPrefix}: ${selectedOption}` : selectedOption;
return (
<>
<div className={`${sparkClassNames.dropdown} ${className}`}>
<button
ref={ref}
className={sparkClassNames.dropdownButton}
type="button"
aria-haspopup="listbox"
aria-expanded={isOpened}
onClick={() => setIsOpened(!isOpened)}
>
<span className={sparkClassNames.dropdownButtonContent}>
<span className={sparkClassNames.dropdownButtonLabel}>
{selectedOption ? selectedOptionText : placeholder}
</span>
<span aria-hidden="true" role="img" className={sparkClassNames.dropdownButtonIcon}>
<ChevronIcon />
</span>
</span>
</button>
{isOpened && (
<DropdownPopover
direction={direction}
selectedOption={selectedOption}
items={options.map((option) => ({
text: option,
onClick: () => {
onSelect(option);
setIsOpened(false);
},
}))}
/>
)}
</div>
</>
);
};
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