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@tamagui/react-native-web-lite

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import { View } from "../../../View"; import { deepDiffer } from "../deepDiffer"; import { Platform } from "../../../exports/Platform"; import { invariant, StyleSheet } from "@tamagui/react-native-web-internals"; import * as React from "react"; import { VirtualizedList } from "../VirtualizedList"; import { keyExtractor as defaultKeyExtractor } from "../VirtualizeUtils"; import memoizeOne from "memoize-one"; import { jsx } from "react/jsx-runtime"; function removeClippedSubviewsOrDefault(removeClippedSubviews) { return removeClippedSubviews ?? Platform.OS === "android"; } function numColumnsOrDefault(numColumns) { return numColumns ?? 1; } function isArrayLike(data) { return typeof Object(data).length == "number"; } class FlatList extends React.PureComponent { /** * Scrolls to the end of the content. May be janky without `getItemLayout` prop. */ scrollToEnd(params) { this._listRef && this._listRef.scrollToEnd(params); } /** * Scrolls to the item at the specified index such that it is positioned in the viewable area * such that `viewPosition` 0 places it at the top, 1 at the bottom, and 0.5 centered in the * middle. `viewOffset` is a fixed number of pixels to offset the final target position. * * Note: cannot scroll to locations outside the render window without specifying the * `getItemLayout` prop. */ scrollToIndex(params) { this._listRef && this._listRef.scrollToIndex(params); } /** * Requires linear scan through data - use `scrollToIndex` instead if possible. * * Note: cannot scroll to locations outside the render window without specifying the * `getItemLayout` prop. */ scrollToItem(params) { this._listRef && this._listRef.scrollToItem(params); } /** * Scroll to a specific content pixel offset in the list. * * Check out [scrollToOffset](docs/virtualizedlist.html#scrolltooffset) of VirtualizedList */ scrollToOffset(params) { this._listRef && this._listRef.scrollToOffset(params); } /** * Tells the list an interaction has occurred, which should trigger viewability calculations, e.g. * if `waitForInteractions` is true and the user has not scrolled. This is typically called by * taps on items or by navigation actions. */ recordInteraction() { this._listRef && this._listRef.recordInteraction(); } /** * Displays the scroll indicators momentarily. * * @platform ios */ flashScrollIndicators() { this._listRef && this._listRef.flashScrollIndicators(); } /** * Provides a handle to the underlying scroll responder. */ getScrollResponder() { if (this._listRef) return this._listRef.getScrollResponder(); } /** * Provides a reference to the underlying host component */ getNativeScrollRef() { if (this._listRef) return this._listRef.getScrollRef(); } getScrollableNode() { if (this._listRef) return this._listRef.getScrollableNode(); } constructor(props) { super(props), this._checkProps(this.props), this.props.viewabilityConfigCallbackPairs ? this._virtualizedListPairs = this.props.viewabilityConfigCallbackPairs.map((pair) => ({ viewabilityConfig: pair.viewabilityConfig, onViewableItemsChanged: this._createOnViewableItemsChanged( pair.onViewableItemsChanged ) })) : this.props.onViewableItemsChanged && this._virtualizedListPairs.push({ viewabilityConfig: this.props.viewabilityConfig, onViewableItemsChanged: this._createOnViewableItemsChanged( this.props.onViewableItemsChanged ) }); } componentDidUpdate(prevProps) { invariant( prevProps.numColumns === this.props.numColumns, "Changing numColumns on the fly is not supported. Change the key prop on FlatList when changing the number of columns to force a fresh render of the component." ), invariant( prevProps.onViewableItemsChanged === this.props.onViewableItemsChanged, "Changing onViewableItemsChanged on the fly is not supported" ), invariant( !deepDiffer(prevProps.viewabilityConfig, this.props.viewabilityConfig), "Changing viewabilityConfig on the fly is not supported" ), invariant( prevProps.viewabilityConfigCallbackPairs === this.props.viewabilityConfigCallbackPairs, "Changing viewabilityConfigCallbackPairs on the fly is not supported" ), this._checkProps(this.props); } _listRef; _virtualizedListPairs = []; _captureRef = (ref) => { this._listRef = ref; }; _checkProps(props) { const { getItem, getItemCount, horizontal, columnWrapperStyle, onViewableItemsChanged, viewabilityConfigCallbackPairs } = props, numColumns = numColumnsOrDefault(this.props.numColumns); invariant( !getItem && !getItemCount, "FlatList does not support custom data formats." ), numColumns > 1 ? invariant(!horizontal, "numColumns does not support horizontal.") : invariant( !columnWrapperStyle, "columnWrapperStyle not supported for single column lists" ), invariant( !(onViewableItemsChanged && viewabilityConfigCallbackPairs), "FlatList does not support setting both onViewableItemsChanged and viewabilityConfigCallbackPairs." ); } _getItem = (data, index) => { const numColumns = numColumnsOrDefault(this.props.numColumns); if (numColumns > 1) { const ret = []; for (let kk = 0; kk < numColumns; kk++) { const itemIndex = index * numColumns + kk; if (itemIndex < data.length) { const item = data[itemIndex]; ret.push(item); } } return ret; } else return data[index]; }; _getItemCount = (data) => { if (data != null && isArrayLike(data)) { const numColumns = numColumnsOrDefault(this.props.numColumns); return numColumns > 1 ? Math.ceil(data.length / numColumns) : data.length; } else return 0; }; _keyExtractor = (items, index) => { const numColumns = numColumnsOrDefault(this.props.numColumns), keyExtractor = this.props.keyExtractor ?? defaultKeyExtractor; return numColumns > 1 ? (invariant( Array.isArray(items), "FlatList: Encountered internal consistency error, expected each item to consist of an array with 1-%s columns; instead, received a single item.", numColumns ), items.map( (item, kk) => keyExtractor(item, index * numColumns + kk) ).join(":")) : keyExtractor(items, index); }; _pushMultiColumnViewable(arr, v) { const numColumns = numColumnsOrDefault(this.props.numColumns), keyExtractor = this.props.keyExtractor ?? defaultKeyExtractor; v.item.forEach((item, ii) => { invariant(v.index != null, "Missing index!"); const index = v.index * numColumns + ii; arr.push({ ...v, item, key: keyExtractor(item, index), index }); }); } _createOnViewableItemsChanged(onViewableItemsChanged) { return (info) => { const numColumns = numColumnsOrDefault(this.props.numColumns); if (onViewableItemsChanged) if (numColumns > 1) { const changed = [], viewableItems = []; info.viewableItems.forEach( (v) => this._pushMultiColumnViewable(viewableItems, v) ), info.changed.forEach((v) => this._pushMultiColumnViewable(changed, v)), onViewableItemsChanged({ viewableItems, changed }); } else onViewableItemsChanged(info); }; } _renderer = (ListItemComponent, renderItem, columnWrapperStyle, numColumns, extraData) => { const cols = numColumnsOrDefault(numColumns), render = (props) => ListItemComponent ? /* @__PURE__ */ jsx(ListItemComponent, { ...props }) : renderItem ? renderItem(props) : null, renderProp = (info) => { if (cols > 1) { const { item, index } = info; return invariant( Array.isArray(item), "Expected array of items with numColumns > 1" ), /* @__PURE__ */ jsx(View, { style: [styles.row, columnWrapperStyle], children: item.map((it, kk) => { const element = render({ item: it, index: index * cols + kk, separators: info.separators }); return element != null ? /* @__PURE__ */ jsx(React.Fragment, { children: element }, kk) : null; }) }); } else return render(info); }; return ListItemComponent ? { ListItemComponent: renderProp } : { renderItem: renderProp }; }; // $FlowFixMe[missing-local-annot] _memoizedRenderer = memoizeOne(this._renderer); render() { const { numColumns, columnWrapperStyle, removeClippedSubviews: _removeClippedSubviews, strictMode = !1, ...restProps } = this.props, renderer = strictMode ? this._memoizedRenderer : this._renderer; return /* @__PURE__ */ jsx( VirtualizedList, { ...restProps, getItem: this._getItem, getItemCount: this._getItemCount, keyExtractor: this._keyExtractor, ref: this._captureRef, viewabilityConfigCallbackPairs: this._virtualizedListPairs, removeClippedSubviews: removeClippedSubviewsOrDefault( _removeClippedSubviews ), ...renderer( this.props.ListItemComponent, this.props.renderItem, columnWrapperStyle, numColumns, this.props.extraData ) } ); } } const styles = StyleSheet.create({ row: { flexDirection: "row" } }); var FlatList_default = FlatList; export { FlatList, FlatList_default as default }; //# sourceMappingURL=index.js.map