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[WC-3146] Improve virtual scrolling in data grid 2 #1948
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10 changes: 8 additions & 2 deletions
10
packages/pluggableWidgets/datagrid-web/src/components/Grid.tsx
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56 changes: 56 additions & 0 deletions
56
packages/pluggableWidgets/datagrid-web/src/components/MockHeader.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| import { ReactNode, useCallback, useEffect, useRef } from "react"; | ||
| import { useColumnsStore, useDatagridConfig, useGridSizeStore } from "../model/hooks/injection-hooks"; | ||
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| function getColumnSizes(container: HTMLDivElement | null): Map<string, number> { | ||
| const sizes = new Map<string, number>(); | ||
| if (container) { | ||
| container.querySelectorAll<HTMLDivElement>("[data-column-id]").forEach(c => { | ||
| const columnId = c.dataset.columnId; | ||
| if (!columnId) { | ||
| console.debug("getColumnSizes: can't find id on:", c); | ||
| return; | ||
| } | ||
| sizes.set(columnId, c.offsetWidth); | ||
| }); | ||
| } | ||
|
|
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| return sizes; | ||
| } | ||
|
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| export function MockHeader(): ReactNode { | ||
| const columnsStore = useColumnsStore(); | ||
| const config = useDatagridConfig(); | ||
| const gridSizeStore = useGridSizeStore(); | ||
| const headerRef = useRef<HTMLDivElement | null>(null); | ||
| const resizeCallback = useCallback<ResizeObserverCallback>(() => { | ||
| gridSizeStore.updateColumnSizes(getColumnSizes(headerRef.current).values().toArray()); | ||
| }, [headerRef, gridSizeStore]); | ||
|
|
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| useEffect(() => { | ||
| const observer = new ResizeObserver(resizeCallback); | ||
|
|
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| if (headerRef.current) { | ||
| observer.observe(headerRef.current); | ||
| } | ||
| return () => { | ||
| observer.disconnect(); | ||
| }; | ||
| }, [resizeCallback, headerRef]); | ||
|
|
||
| return ( | ||
| <div className={"grid-mock-header"} aria-hidden ref={headerRef}> | ||
| {config.checkboxColumnEnabled && <div data-column-id="checkboxes" key={"checkboxes"}></div>} | ||
| {columnsStore.visibleColumns.map(c => ( | ||
| <div | ||
| data-column-id={c.columnId} | ||
| key={c.columnId} | ||
| // we set header ref here instead of the real header | ||
| // as this mock header is aligned with CSS grid, so it is more reliable | ||
| // the real header is aligned programmatically based on this header | ||
| ref={ref => c.setHeaderElementRef(ref)} | ||
| ></div> | ||
| ))} | ||
| {config.selectorColumnEnabled && <div data-column-id="selector" key={"selector"}></div>} | ||
| </div> | ||
| ); | ||
| } |
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23 changes: 4 additions & 19 deletions
23
packages/pluggableWidgets/datagrid-web/src/model/hooks/useBodyScroll.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,27 +1,12 @@ | ||
| import { useInfiniteControl } from "@mendix/widget-plugin-grid/components/InfiniteBody"; | ||
| import { RefObject, UIEventHandler, useCallback } from "react"; | ||
| import { usePaginationService } from "./injection-hooks"; | ||
| import { UIEventHandler } from "react"; | ||
| import { useInfiniteControl } from "./useInfiniteControl"; | ||
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|
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| export function useBodyScroll(): { | ||
| handleScroll: UIEventHandler<HTMLDivElement> | undefined; | ||
| bodySize: number; | ||
| containerRef: RefObject<HTMLDivElement | null>; | ||
| isInfinite: boolean; | ||
| } { | ||
| const paging = usePaginationService(); | ||
| const setPage = useCallback((cb: (n: number) => number) => paging.setPage(cb), [paging]); | ||
|
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| const isInfinite = paging.pagination === "virtualScrolling"; | ||
| const [trackScrolling, bodySize, containerRef] = useInfiniteControl({ | ||
| hasMoreItems: paging.hasMoreItems, | ||
| isInfinite, | ||
| setPage | ||
| }); | ||
| const [trackBodyScrolling] = useInfiniteControl(); | ||
|
|
||
| return { | ||
| handleScroll: isInfinite ? trackScrolling : undefined, | ||
| bodySize, | ||
| containerRef, | ||
| isInfinite | ||
| handleScroll: trackBodyScrolling | ||
| }; | ||
| } | ||
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NIT: this might be removed but, OK :D