ITEP-163854 - replace react virtuoso - p4 #230
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| // Copyright (C) 2022-2025 Intel Corporation | ||
| // LIMITED EDGE SOFTWARE DISTRIBUTION LICENSE | ||
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| import { renderHook } from '@testing-library/react'; | ||
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| import { useGetTargetPosition } from './use-get-target-position.hook'; | ||
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| describe('useGetTargetPosition', () => { | ||
| const mockCallback = jest.fn(); | ||
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| beforeEach(() => { | ||
| jest.useFakeTimers(); | ||
| jest.clearAllMocks(); | ||
| jest.clearAllTimers(); | ||
| }); | ||
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| afterEach(() => { | ||
| jest.useRealTimers(); | ||
| }); | ||
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| it('should not call callback when container is not provided', () => { | ||
| renderHook(() => | ||
| useGetTargetPosition({ | ||
| gap: 10, | ||
| container: null, | ||
| targetIndex: 5, | ||
| callback: mockCallback, | ||
| }) | ||
| ); | ||
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| jest.advanceTimersByTime(500); | ||
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| expect(mockCallback).not.toHaveBeenCalled(); | ||
| }); | ||
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| it('calls callback with correct scroll position', () => { | ||
| const gap = 0; | ||
| const childWidth = 100; | ||
| const childHeight = 100; | ||
| const targetIndex = 12; | ||
| const containerWidth = 200; | ||
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| const container = document.createElement('div'); | ||
| Object.defineProperty(container, 'clientWidth', { value: containerWidth }); | ||
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| const child = document.createElement('div'); | ||
| Object.defineProperty(child, 'clientWidth', { value: childWidth }); | ||
| Object.defineProperty(child, 'clientHeight', { value: childHeight }); | ||
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| container.appendChild(child); | ||
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| const itemsPerRow = Math.floor(containerWidth / childWidth); // 2 | ||
| const targetRow = Math.floor(targetIndex / itemsPerRow); // 6 | ||
| const expectedScrollPos = (childHeight + gap) * targetRow; // 600 | ||
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| renderHook(() => | ||
| useGetTargetPosition({ | ||
| gap, | ||
| container, | ||
| targetIndex, | ||
| callback: mockCallback, | ||
| }) | ||
| ); | ||
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| jest.advanceTimersByTime(500); | ||
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| expect(mockCallback).toHaveBeenCalledWith(expectedScrollPos); | ||
| }); | ||
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| it('return zero when container has no children', () => { | ||
| const container = document.createElement('div'); | ||
| Object.defineProperty(container, 'clientWidth', { value: 1000 }); | ||
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| renderHook(() => | ||
| useGetTargetPosition({ | ||
| gap: 10, | ||
| container, | ||
| targetIndex: 5, | ||
| callback: mockCallback, | ||
| }) | ||
| ); | ||
|
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| jest.advanceTimersByTime(500); | ||
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| expect(mockCallback).toHaveBeenCalledWith(0); | ||
| }); | ||
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| describe('should not call callback with invalid index', () => { | ||
| it.each([undefined, null, -1, 1.5, NaN])('targetIndex: %p', (invalidIndex) => { | ||
| renderHook(() => | ||
| useGetTargetPosition({ | ||
| gap: 10, | ||
| container: document.createElement('div'), | ||
| targetIndex: invalidIndex as number, | ||
| callback: mockCallback, | ||
| }) | ||
| ); | ||
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| jest.advanceTimersByTime(500); | ||
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| expect(mockCallback).not.toHaveBeenCalled(); | ||
| }); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // Copyright (C) 2022-2025 Intel Corporation | ||
| // LIMITED EDGE SOFTWARE DISTRIBUTION LICENSE | ||
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| import { DependencyList, useEffect } from 'react'; | ||
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| import { isNil } from 'lodash-es'; | ||
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| interface useGetTargetPositionProps { | ||
| gap: number; | ||
| delay?: number; | ||
| container?: Element | null; | ||
| targetIndex?: number; | ||
| dependencies?: DependencyList; | ||
| callback: (scrollTo: number) => void; | ||
| } | ||
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| const isValidIndex = (index?: number): index is number => !isNil(index) && Number.isInteger(index) && index >= 0; | ||
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| export const useGetTargetPosition = ({ | ||
| gap, | ||
| delay = 500, | ||
| container, | ||
| targetIndex, | ||
| dependencies = [], | ||
| callback, | ||
| }: useGetTargetPositionProps) => { | ||
| useEffect(() => { | ||
| const timeoutId = setTimeout(() => { | ||
| if (!container || !isValidIndex(targetIndex)) { | ||
| return; | ||
| } | ||
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| const containerWidth = container.clientWidth; | ||
| const childrenWidth = container.firstElementChild?.clientWidth ?? 1; | ||
| const childrenHeight = container.firstElementChild?.clientHeight ?? 1; | ||
| const childrenPerRow = Math.floor(containerWidth / childrenWidth); | ||
| const targetRow = Math.floor(targetIndex / childrenPerRow); | ||
| const scrollTo = (childrenHeight + gap) * targetRow; | ||
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| callback(scrollTo); | ||
| // we don't want to scroll immediately | ||
| // in case of changed view mode we have to scroll once view is rendered | ||
| }, delay); | ||
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| return () => { | ||
| timeoutId && clearTimeout(timeoutId); | ||
| }; | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| }, dependencies); | ||
| }; |
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The
INITIAL_VIEW_MODEimport is unused and can be removed to clean up dead code.Copilot uses AI. Check for mistakes.