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refactor: Sticky columns utils (#1400)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,5 @@ | ||
| // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| export { | ||
| useStickyColumns, | ||
| useStickyCellStyles, | ||
| StickyColumnsModel, | ||
| StickyColumnsCellState, | ||
| } from './use-sticky-columns'; | ||
| export { StickyColumnsCellState } from './interfaces'; | ||
| export { useStickyColumns, useStickyCellStyles, StickyColumnsModel } from './use-sticky-columns'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| export interface StickyColumnsProps { | ||
| visibleColumns: readonly PropertyKey[]; | ||
| stickyColumnsFirst: number; | ||
| stickyColumnsLast: number; | ||
| } | ||
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| export interface StickyColumnsState { | ||
| cellState: Record<PropertyKey, null | StickyColumnsCellState>; | ||
| wrapperState: StickyColumnsWrapperState; | ||
| } | ||
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| // Cell state is used to apply respective styles and offsets to sticky cells. | ||
| export interface StickyColumnsCellState { | ||
| padLeft: boolean; | ||
| lastLeft: boolean; | ||
| lastRight: boolean; | ||
| offset: { left?: number; right?: number }; | ||
| } | ||
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| // Scroll padding is applied to table's wrapper so that the table scrolls when focus goes behind sticky column. | ||
| export interface StickyColumnsWrapperState { | ||
| scrollPaddingLeft: number; | ||
| scrollPaddingRight: number; | ||
| } | ||
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| export interface CellOffsets { | ||
| offsets: Map<PropertyKey, { first: number; last: number }>; | ||
| stickyWidthLeft: number; | ||
| stickyWidthRight: number; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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|
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| import { CellOffsets, StickyColumnsCellState, StickyColumnsProps, StickyColumnsWrapperState } from './interfaces'; | ||
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| export function isCellStatesEqual(s1: null | StickyColumnsCellState, s2: null | StickyColumnsCellState): boolean { | ||
| if (s1 && s2) { | ||
| return ( | ||
| s1.padLeft === s2.padLeft && | ||
| s1.lastLeft === s2.lastLeft && | ||
| s1.lastRight === s2.lastRight && | ||
| s1.offset.left === s2.offset.left && | ||
| s1.offset.right === s2.offset.right | ||
| ); | ||
| } | ||
| return s1 === s2; | ||
| } | ||
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| export function isWrapperStatesEqual(s1: StickyColumnsWrapperState, s2: StickyColumnsWrapperState): boolean { | ||
| return s1.scrollPaddingLeft === s2.scrollPaddingLeft && s1.scrollPaddingRight === s2.scrollPaddingRight; | ||
| } | ||
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| export function updateCellOffsets(cells: Record<PropertyKey, HTMLElement>, props: StickyColumnsProps): CellOffsets { | ||
| const totalColumns = props.visibleColumns.length; | ||
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| const firstColumnsWidths: number[] = []; | ||
| for (let i = 0; i < Math.min(totalColumns, props.stickyColumnsFirst); i++) { | ||
| const element = cells[props.visibleColumns[i]]; | ||
| const cellWidth = element.getBoundingClientRect().width ?? 0; | ||
| firstColumnsWidths[i] = (firstColumnsWidths[i - 1] ?? 0) + cellWidth; | ||
| } | ||
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| const lastColumnsWidths: number[] = []; | ||
| for (let i = 0; i < Math.min(totalColumns, props.stickyColumnsLast); i++) { | ||
| const element = cells[props.visibleColumns[totalColumns - 1 - i]]; | ||
| const cellWidth = element.getBoundingClientRect().width ?? 0; | ||
| lastColumnsWidths[i] = (lastColumnsWidths[i - 1] ?? 0) + cellWidth; | ||
| } | ||
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| const stickyWidthLeft = firstColumnsWidths[props.stickyColumnsFirst - 1] ?? 0; | ||
| const stickyWidthRight = lastColumnsWidths[props.stickyColumnsLast - 1] ?? 0; | ||
| const offsets = props.visibleColumns.reduce( | ||
| (map, columnId, columnIndex) => | ||
| map.set(columnId, { | ||
| first: firstColumnsWidths[columnIndex - 1] ?? 0, | ||
| last: lastColumnsWidths[totalColumns - 1 - columnIndex - 1] ?? 0, | ||
| }), | ||
| new Map() | ||
| ); | ||
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| return { offsets, stickyWidthLeft, stickyWidthRight }; | ||
| } |