@mantine/core
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React components library focused on usability, accessibility and developer experience
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{"version":3,"file":"use-floating-indicator.cjs","names":["toInt","getEnv"],"sources":["../../../src/components/FloatingIndicator/use-floating-indicator.ts"],"sourcesContent":["import { useEffect, useRef, useState, type RefObject } from 'react';\nimport { useMutationObserverTarget, useTimeout } from '@mantine/hooks';\nimport { getEnv } from '../../core';\nimport { toInt } from '../ScrollArea/utils';\n\nfunction isParent(\n parentElement: HTMLElement | EventTarget | null,\n childElement: HTMLElement | null\n) {\n if (!childElement || !parentElement) {\n return false;\n }\n\n let parent = childElement.parentNode;\n while (parent != null) {\n if (parent === parentElement) {\n return true;\n }\n parent = parent.parentNode;\n }\n return false;\n}\n\ninterface UseFloatingIndicatorInput {\n target: HTMLElement | null | undefined;\n parent: HTMLElement | null | undefined;\n ref: RefObject<HTMLElement | null>;\n displayAfterTransitionEnd?: boolean;\n onTransitionStart?: () => void;\n onTransitionEnd?: () => void;\n}\n\nexport function useFloatingIndicator({\n target,\n parent,\n ref,\n displayAfterTransitionEnd,\n onTransitionStart,\n onTransitionEnd,\n}: UseFloatingIndicatorInput) {\n const transitionTimeout = useRef<number>(-1);\n const previousTarget = useRef<HTMLElement | null | undefined>(target);\n const [initialized, setInitialized] = useState(false);\n\n const [hidden, setHidden] = useState(\n typeof displayAfterTransitionEnd === 'boolean' ? displayAfterTransitionEnd : false\n );\n\n const updatePosition = () => {\n if (!target || !parent || !ref.current) {\n return;\n }\n\n const targetRect = target.getBoundingClientRect();\n const parentRect = parent.getBoundingClientRect();\n\n const targetComputedStyle = window.getComputedStyle(target);\n const parentComputedStyle = window.getComputedStyle(parent);\n\n const borderTopWidth =\n toInt(targetComputedStyle.borderTopWidth) + toInt(parentComputedStyle.borderTopWidth);\n const borderLeftWidth =\n toInt(targetComputedStyle.borderLeftWidth) + toInt(parentComputedStyle.borderLeftWidth);\n\n const position = {\n top: targetRect.top - parentRect.top - borderTopWidth,\n left: targetRect.left - parentRect.left - borderLeftWidth,\n width: targetRect.width,\n height: targetRect.height,\n };\n\n ref.current.style.transform = `translateY(${position.top}px) translateX(${position.left}px)`;\n ref.current.style.width = `${position.width}px`;\n ref.current.style.height = `${position.height}px`;\n };\n\n const updatePositionWithoutAnimation = () => {\n window.clearTimeout(transitionTimeout.current);\n if (ref.current) {\n ref.current.style.transitionDuration = '0ms';\n }\n updatePosition();\n transitionTimeout.current = window.setTimeout(() => {\n if (ref.current) {\n ref.current.style.transitionDuration = '';\n }\n }, 30);\n };\n\n const targetResizeObserver = useRef<ResizeObserver>(null);\n const parentResizeObserver = useRef<ResizeObserver>(null);\n\n useEffect(() => {\n if (initialized && previousTarget.current !== target && onTransitionStart) {\n onTransitionStart();\n }\n\n previousTarget.current = target;\n updatePosition();\n\n if (target) {\n targetResizeObserver.current = new ResizeObserver(updatePositionWithoutAnimation);\n targetResizeObserver.current.observe(target);\n\n if (parent) {\n parentResizeObserver.current = new ResizeObserver(updatePositionWithoutAnimation);\n parentResizeObserver.current.observe(parent);\n }\n\n return () => {\n targetResizeObserver.current?.disconnect();\n parentResizeObserver.current?.disconnect();\n };\n }\n\n return undefined;\n }, [parent, target]);\n\n useEffect(() => {\n if (parent) {\n const handleTransitionEnd = (event: TransitionEvent) => {\n if (isParent(event.target, parent)) {\n updatePositionWithoutAnimation();\n setHidden(false);\n }\n };\n\n parent.addEventListener('transitionend', handleTransitionEnd);\n return () => {\n parent.removeEventListener('transitionend', handleTransitionEnd);\n };\n }\n\n return undefined;\n }, [parent]);\n\n useEffect(() => {\n if (ref.current && onTransitionEnd) {\n const handleIndicatorTransitionEnd = (event: TransitionEvent) => {\n if (event.propertyName === 'transform') {\n onTransitionEnd();\n }\n };\n\n ref.current.addEventListener('transitionend', handleIndicatorTransitionEnd);\n return () => {\n ref.current?.removeEventListener('transitionend', handleIndicatorTransitionEnd);\n };\n }\n\n return undefined;\n }, [onTransitionEnd]);\n\n useTimeout(\n () => {\n // Prevents warning about state update without act\n if (getEnv() !== 'test') {\n setInitialized(true);\n }\n },\n 20,\n { autoInvoke: true }\n );\n\n useMutationObserverTarget(\n (mutations) => {\n mutations.forEach((mutation) => {\n if (mutation.type === 'attributes' && mutation.attributeName === 'dir') {\n updatePositionWithoutAnimation();\n }\n });\n },\n { attributes: true, attributeFilter: ['dir'] },\n () => document.documentElement\n );\n\n return { initialized, hidden 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