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FlatGrid.js
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FlatGrid.js
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import React, { forwardRef, memo, useMemo } from 'react';
import { FlatList } from 'react-native';
import PropTypes from 'prop-types';
import { generateStyles } from './utils';
import useRenderRow from './hooks/useRenderRow';
import useDimensions from './hooks/useDimensions';
import useRows from './hooks/useRows';
const FlatGrid = memo(
forwardRef((props, ref) => {
const {
style,
spacing,
fixed,
data,
itemDimension,
renderItem,
horizontal,
onLayout: _,
staticDimension,
maxDimension,
additionalRowStyle: externalRowStyle,
itemContainerStyle,
keyExtractor: customKeyExtractor,
invertedRow,
maxItemsPerRow,
adjustGridToStyles,
customFlatList: FlatListComponent = FlatList,
onItemsPerRowChange,
...restProps
} = props;
// eslint-disable-next-line react/prop-types
if (props.items && !props.data) {
// eslint-disable-next-line no-console
throw new Error('React Native Super Grid - Prop "items" has been renamed to "data" in version 4');
}
const {
onLayout,
totalDimension,
itemsPerRow,
containerDimension,
fixedSpacing,
} = useDimensions(props);
const { containerStyle, containerFullWidthStyle, rowStyle } = useMemo(
() => generateStyles({
horizontal,
itemDimension,
containerDimension,
spacing,
fixedSpacing,
fixed,
itemsPerRow,
}),
[horizontal, itemDimension, containerDimension, itemsPerRow, spacing, fixedSpacing, fixed],
);
const { rows, keyExtractor } = useRows({
data,
invertedRow,
itemsPerRow,
keyExtractor: customKeyExtractor,
onItemsPerRowChange,
});
const renderRow = useRenderRow({
renderItem,
spacing,
keyExtractor: customKeyExtractor,
externalRowStyle,
itemContainerStyle,
horizontal,
invertedRow,
});
return (
<FlatListComponent
data={rows}
ref={ref}
extraData={totalDimension}
renderItem={({ item, index }) => renderRow({
rowItems: item,
rowIndex: index,
isLastRow: index === rows.length - 1,
itemsPerRow,
rowStyle,
containerStyle,
containerFullWidthStyle,
})
}
style={[
{
...(horizontal
? { paddingLeft: spacing }
: { paddingTop: spacing }),
},
style,
]}
onLayout={onLayout}
keyExtractor={keyExtractor}
{...restProps}
horizontal={horizontal}
/>
);
}),
);
FlatGrid.displayName = 'FlatGrid';
FlatGrid.propTypes = {
renderItem: PropTypes.func.isRequired,
// eslint-disable-next-line react/forbid-prop-types
data: PropTypes.arrayOf(PropTypes.any).isRequired,
itemDimension: PropTypes.number,
maxDimension: PropTypes.number,
fixed: PropTypes.bool,
spacing: PropTypes.number,
style: PropTypes.oneOfType([PropTypes.object, PropTypes.number, PropTypes.array]),
additionalRowStyle: PropTypes.oneOfType([PropTypes.object, PropTypes.number, PropTypes.array]),
itemContainerStyle: PropTypes.oneOfType([PropTypes.object, PropTypes.number, PropTypes.array]),
staticDimension: PropTypes.number,
horizontal: PropTypes.bool,
onLayout: PropTypes.func,
keyExtractor: PropTypes.func,
listKey: PropTypes.string,
invertedRow: PropTypes.bool,
maxItemsPerRow: PropTypes.number,
adjustGridToStyles: PropTypes.bool,
onItemsPerRowChange: PropTypes.func,
customFlatList: PropTypes.elementType,
};
FlatGrid.defaultProps = {
fixed: false,
itemDimension: 120,
spacing: 10,
style: {},
additionalRowStyle: undefined,
itemContainerStyle: undefined,
staticDimension: undefined,
horizontal: false,
onLayout: null,
keyExtractor: null,
listKey: undefined,
maxDimension: undefined,
invertedRow: false,
maxItemsPerRow: undefined,
adjustGridToStyles: false,
onItemsPerRowChange: undefined,
customFlatList: undefined,
};
export default FlatGrid;