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Autocomplete.js
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Autocomplete.js
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import React, { PureComponent } from 'react'
import PropTypes from 'prop-types'
import fuzzaldrin from 'fuzzaldrin-plus'
import Downshift from 'downshift'
import { Pane } from 'evergreen-layers'
import { Popover } from 'evergreen-popover'
import VirtualList from 'react-tiny-virtual-list'
import AutocompleteItem from './AutocompleteItem'
const fuzzyFilter = (items, input) => fuzzaldrin.filter(items, input)
const autocompleteItemRenderer = props => <AutocompleteItem {...props} />
// https://github.com/paypal/downshift/issues/164
export default class Autocomplete extends PureComponent {
static propTypes = {
children: PropTypes.func,
itemSize: PropTypes.number,
renderItem: PropTypes.func,
itemsFilter: PropTypes.func,
isFilterDisabled: PropTypes.bool,
popoverMaxHeight: PropTypes.number,
useSmartPositioning: PropTypes.bool,
...Downshift.propTypes,
}
static defaultProps = {
itemSize: 32,
itemsFilter: fuzzyFilter,
isFilterDisabled: false,
popoverMaxHeight: 240,
useSmartPositioning: false,
renderItem: autocompleteItemRenderer,
}
renderResults = ({
width,
inputValue,
highlightedIndex,
selectItemAtIndex,
selectedItem,
getItemProps,
}) => {
const {
itemSize,
itemsFilter,
items: originalItems,
renderItem,
popoverMaxHeight,
isFilterDisabled,
} = this.props
const items =
isFilterDisabled || inputValue.trim() === ''
? originalItems
: itemsFilter(originalItems, inputValue)
return (
<Pane width={width}>
{items.length > 0 && (
<VirtualList
width="100%"
height={Math.min(items.length * itemSize, popoverMaxHeight)}
itemSize={itemSize}
itemCount={items.length}
scrollToIndex={highlightedIndex || 0}
overscanCount={3}
scrollToAlignment="auto"
renderItem={({ index, style }) => {
const item = items[index]
return renderItem(
getItemProps({
item,
key: item,
index,
style,
isEven: index % 2 === 1,
children: item,
onMouseUp: () => {
selectItemAtIndex(index)
},
isSelected: selectedItem === item,
isHighlighted: highlightedIndex === index,
}),
)
}}
/>
)}
</Pane>
)
}
render() {
const {
children,
itemSize,
renderItem,
itemsFilter,
popoverMaxHeight,
useSmartPositioning,
...props
} = this.props
return (
<Downshift {...props}>
{({
isOpen,
inputValue,
getItemProps,
selectedItem,
highlightedIndex,
selectItemAtIndex,
...restDownshiftProps
}) => (
<div>
<Popover
isOpen={isOpen}
display="inline-block"
content={({ targetRect }) =>
this.renderResults({
width: targetRect.width,
inputValue,
getItemProps,
selectedItem,
highlightedIndex,
selectItemAtIndex,
})}
animationDuration={0}
useSmartPositioning={useSmartPositioning}
>
{({ isOpen: isOpenPopover, toggle, getRef, key }) =>
children({
key,
isOpen: isOpenPopover,
toggle,
getRef,
inputValue,
selectedItem,
highlightedIndex,
selectItemAtIndex,
...restDownshiftProps,
})}
</Popover>
</div>
)}
</Downshift>
)
}
}