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| 1 | +import React, {useDeferredValue} from "react" |
| 2 | + |
| 3 | +import type { |
| 4 | + DataListDescriptors, |
| 5 | + DataListRenderer, |
| 6 | + DataListRendererProps as DataListRendererPropsType, |
| 7 | + DataListRendererRootRenderItem, |
| 8 | + DataListRendererRootRenderItemArgs, |
| 9 | + DataListRenderListItemInfo, |
| 10 | +} from "./data-list-types" |
| 11 | +import {DataListRendererContextProvider} from "./data-list-renderer-context" |
| 12 | +import {cancelFrame, requestFrame} from "./utils/request-frame" |
| 13 | + |
| 14 | +export interface DataListMasterRendererProps<TRenderItem> |
| 15 | + extends Omit<DataListRendererPropsType<TRenderItem>, "data" | "rootRenderItem" | "getItemId"> { |
| 16 | + renderer: DataListRenderer<TRenderItem> | ReturnType<DataListRenderer<TRenderItem>> |
| 17 | + descriptors: DataListDescriptors<TRenderItem> |
| 18 | +} |
| 19 | + |
| 20 | +export function DataListMasterRenderer<TRenderItem>({ |
| 21 | + renderer, |
| 22 | + descriptors, |
| 23 | + ...rest |
| 24 | +}: DataListMasterRendererProps<TRenderItem>) { |
| 25 | + const newData = React.useMemo((): Array< |
| 26 | + DataListRendererRootRenderItemArgs<TRenderItem>["item"] |
| 27 | + > => { |
| 28 | + const sortedDescriptors = [...descriptors.entries()].sort((a, b) => a[0] - b[0]) |
| 29 | + |
| 30 | + return sortedDescriptors.flatMap(([index, descriptors]) => |
| 31 | + descriptors.map((d) => ({ |
| 32 | + descriptor: { |
| 33 | + ...d, |
| 34 | + id: [index, ...(Array.isArray(d.id) ? d.id : [d.id])], |
| 35 | + }, |
| 36 | + descriptorSourceIndex: index, |
| 37 | + })) |
| 38 | + ) |
| 39 | + }, [descriptors]) |
| 40 | + |
| 41 | + const deferredData = useDeferredValue(newData) |
| 42 | + |
| 43 | + const hasInitialPaintedRef = React.useRef(false) |
| 44 | + React.useLayoutEffect(() => { |
| 45 | + if (!hasInitialPaintedRef.current) { |
| 46 | + const id = requestFrame(() => { |
| 47 | + hasInitialPaintedRef.current = true |
| 48 | + }) |
| 49 | + |
| 50 | + return () => cancelFrame(id) |
| 51 | + } |
| 52 | + |
| 53 | + return |
| 54 | + }, []) |
| 55 | + |
| 56 | + // Only use deferred data after first mount/paint. |
| 57 | + const data = hasInitialPaintedRef.current ? deferredData : newData |
| 58 | + |
| 59 | + const rootRenderItem: DataListRendererRootRenderItem<TRenderItem> = React.useCallback( |
| 60 | + ({item, index}) => item.descriptor.render({...item, index, allData: data}), |
| 61 | + [data] |
| 62 | + ) |
| 63 | + |
| 64 | + const getItemId = React.useCallback( |
| 65 | + (item: DataListRenderListItemInfo<TRenderItem>) => |
| 66 | + (Array.isArray(item.descriptor.id) ? item.descriptor.id : [item.descriptor.id]).join( |
| 67 | + ":" |
| 68 | + ), |
| 69 | + [] |
| 70 | + ) |
| 71 | + |
| 72 | + const extraProps = {data, rootRenderItem, getItemId} |
| 73 | + |
| 74 | + return ( |
| 75 | + <DataListRendererContextProvider {...rest} {...extraProps}> |
| 76 | + {typeof renderer === "function" ? renderer({...rest, ...extraProps}) : renderer} |
| 77 | + </DataListRendererContextProvider> |
| 78 | + ) |
| 79 | +} |
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