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All rights reserved.\n * This file is licensed to you under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License. You may obtain a copy\n * of the License at http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software distributed under\n * the License is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS\n * OF ANY KIND, either express or implied. See the License for the specific language\n * governing permissions and limitations under the License.\n */\n\nimport {calculatePosition, getRect, PositionResult} from './calculatePosition';\nimport {DOMAttributes, RefObject} from '@react-types/shared';\nimport {Placement, PlacementAxis, PositionProps} from '@react-types/overlays';\nimport {useCallback, useEffect, useRef, useState} from 'react';\nimport {useCloseOnScroll} from './useCloseOnScroll';\nimport {useLayoutEffect, useResizeObserver} from '@react-aria/utils';\nimport {useLocale} from '@react-aria/i18n';\n\nexport interface AriaPositionProps extends PositionProps {\n /**\n * Cross size of the overlay arrow in pixels.\n * @default 0\n */\n arrowSize?: number,\n /**\n * Element that that serves as the positioning boundary.\n * @default document.body\n */\n boundaryElement?: Element,\n /**\n * The ref for the element which the overlay positions itself with respect to.\n */\n targetRef: RefObject<Element | null>,\n /**\n * The ref for the overlay element.\n */\n overlayRef: RefObject<Element | null>,\n /**\n * The ref for the arrow element.\n */\n arrowRef?: RefObject<Element | null>,\n /**\n * A ref for the scrollable region within the overlay.\n * @default overlayRef\n */\n scrollRef?: RefObject<Element | null>,\n /**\n * Whether the overlay should update its position automatically.\n * @default true\n */\n shouldUpdatePosition?: boolean,\n /** Handler that is called when the overlay should close. */\n onClose?: (() => void) | null,\n /**\n * The maxHeight specified for the overlay element.\n * By default, it will take all space up to the current viewport height.\n */\n maxHeight?: number,\n /**\n * The minimum distance the arrow's edge should be from the edge of the overlay element.\n * @default 0\n */\n arrowBoundaryOffset?: number\n}\n\nexport interface PositionAria {\n /** Props for the overlay container element. */\n overlayProps: DOMAttributes,\n /** Props for the overlay tip arrow if any. */\n arrowProps: DOMAttributes,\n /** Placement of the overlay with respect to the overlay trigger. */\n placement: PlacementAxis | null,\n /** The origin of the target in the overlay's coordinate system. Useful for animations. */\n triggerAnchorPoint: {x: number, y: number} | null,\n /** Updates the position of the overlay. */\n updatePosition(): void\n}\n\ninterface ScrollAnchor {\n type: 'top' | 'bottom',\n offset: number\n}\n\nlet visualViewport = typeof document !== 'undefined' ? window.visualViewport : null;\n\n/**\n * Handles positioning overlays like popovers and menus relative to a trigger\n * element, and updating the position when the window resizes.\n */\nexport function useOverlayPosition(props: AriaPositionProps): PositionAria {\n let {direction} = useLocale();\n let {\n arrowSize,\n targetRef,\n overlayRef,\n arrowRef,\n scrollRef = overlayRef,\n placement = 'bottom' as Placement,\n containerPadding = 12,\n shouldFlip = true,\n boundaryElement = typeof document !== 'undefined' ? document.body : null,\n offset = 0,\n crossOffset = 0,\n shouldUpdatePosition = true,\n isOpen = true,\n onClose,\n maxHeight,\n arrowBoundaryOffset = 0\n } = props;\n let [position, setPosition] = useState<PositionResult | null>(null);\n\n let deps = [\n shouldUpdatePosition,\n placement,\n overlayRef.current,\n targetRef.current,\n arrowRef?.current,\n scrollRef.current,\n containerPadding,\n shouldFlip,\n boundaryElement,\n offset,\n crossOffset,\n isOpen,\n direction,\n maxHeight,\n arrowBoundaryOffset,\n arrowSize\n ];\n\n // Note, the position freezing breaks if body sizes itself dynamicly with the visual viewport but that might\n // just be a non-realistic use case\n // Upon opening a overlay, record the current visual viewport scale so we can freeze the overlay styles\n let lastScale = useRef(visualViewport?.scale);\n useEffect(() => {\n if (isOpen) {\n lastScale.current = visualViewport?.scale;\n }\n }, [isOpen]);\n\n let updatePosition = useCallback(() => {\n if (shouldUpdatePosition === false || !isOpen || !overlayRef.current || !targetRef.current || !boundaryElement) {\n return;\n }\n\n if (visualViewport?.scale !== lastScale.current) {\n return;\n }\n\n // Determine a scroll anchor based on the focused element.\n // This stores the offset of the anchor element from the scroll container\n // so it can be restored after repositioning. This way if the overlay height\n // changes, the focused element appears to stay in the same position.\n let anchor: ScrollAnchor | null = null;\n if (scrollRef.current && scrollRef.current.contains(document.activeElement)) {\n let anchorRect = document.activeElement?.getBoundingClientRect();\n let scrollRect = scrollRef.current.getBoundingClientRect();\n // Anchor from the top if the offset is in the top half of the scrollable element,\n // otherwise anchor from the bottom.\n anchor = {\n type: 'top',\n offset: (anchorRect?.top ?? 0) - scrollRect.top\n };\n if (anchor.offset > scrollRect.height / 2) {\n anchor.type = 'bottom';\n anchor.offset = (anchorRect?.bottom ?? 0) - scrollRect.bottom;\n }\n }\n\n // Always reset the overlay's previous max height if not defined by the user so that we can compensate for\n // RAC collections populating after a second render and properly set a correct max height + positioning when it populates.\n let overlay = (overlayRef.current as HTMLElement);\n if (!maxHeight && overlayRef.current) {\n overlay.style.top = '0px';\n overlay.style.bottom = '';\n overlay.style.maxHeight = (window.visualViewport?.height ?? window.innerHeight) + 'px';\n }\n\n let position = calculatePosition({\n placement: translateRTL(placement, direction),\n overlayNode: overlayRef.current,\n targetNode: targetRef.current,\n scrollNode: scrollRef.current || overlayRef.current,\n padding: containerPadding,\n shouldFlip,\n boundaryElement,\n offset,\n crossOffset,\n maxHeight,\n arrowSize: arrowSize ?? (arrowRef?.current ? getRect(arrowRef.current, true).width : 0),\n arrowBoundaryOffset\n });\n\n if (!position.position) {\n return;\n }\n\n // Modify overlay styles directly so positioning happens immediately without the need of a second render\n // This is so we don't have to delay autoFocus scrolling or delay applying preventScroll for popovers\n overlay.style.top = '';\n overlay.style.bottom = '';\n overlay.style.left = '';\n overlay.style.right = '';\n\n Object.keys(position.position).forEach(key => overlay.style[key] = (position.position!)[key] + 'px');\n overlay.style.maxHeight = position.maxHeight != null ? position.maxHeight + 'px' : '';\n\n // Restore scroll position relative to anchor element.\n if (anchor && document.activeElement && scrollRef.current) {\n let anchorRect = document.activeElement.getBoundingClientRect();\n let scrollRect = scrollRef.current.getBoundingClientRect();\n let newOffset = anchorRect[anchor.type] - scrollRect[anchor.type];\n scrollRef.current.scrollTop += newOffset - anchor.offset;\n }\n\n // Trigger a set state for a second render anyway for arrow positioning\n setPosition(position);\n // eslint-disable-next-line react-hooks/exhaustive-deps\n }, deps);\n\n // Update position when anything changes\n // eslint-disable-next-line react-hooks/exhaustive-deps\n useLayoutEffect(updatePosition, deps);\n\n // Update position on window resize\n useResize(updatePosition);\n\n // Update position when the overlay changes size (might need to flip).\n useResizeObserver({\n ref: overlayRef,\n onResize: updatePosition\n });\n\n // Update position when the target changes size (might need to flip).\n useResizeObserver({\n ref: targetRef,\n onResize: updatePosition\n });\n\n // Reposition the overlay and do not close on scroll while the visual viewport is resizing.\n // This will ensure that overlays adjust their positioning when the iOS virtual keyboard appears.\n let isResizing = useRef(false);\n useLayoutEffect(() => {\n let timeout: ReturnType<typeof setTimeout>;\n let onResize = () => {\n isResizing.current = true;\n clearTimeout(timeout);\n\n timeout = setTimeout(() => {\n isResizing.current = false;\n }, 500);\n\n updatePosition();\n };\n\n // Only reposition the overlay if a scroll event happens immediately as a result of resize (aka the virtual keyboard has appears)\n // We don't want to reposition the overlay if the user has pinch zoomed in and is scrolling the viewport around.\n let onScroll = () => {\n if (isResizing.current) {\n onResize();\n }\n };\n\n visualViewport?.addEventListener('resize', onResize);\n visualViewport?.addEventListener('scroll', onScroll);\n return () => {\n visualViewport?.removeEventListener('resize', onResize);\n visualViewport?.removeEventListener('scroll', onScroll);\n };\n }, [updatePosition]);\n\n let close = useCallback(() => {\n if (!isResizing.current) {\n onClose?.();\n }\n }, [onClose, isResizing]);\n\n // When scrolling a parent scrollable region of the trigger (other than the body),\n // we hide the popover. Otherwise, its position would be incorrect.\n useCloseOnScroll({\n triggerRef: targetRef,\n isOpen,\n onClose: onClose && close\n });\n\n return {\n overlayProps: {\n style: {\n position: position ? 'absolute' : 'fixed',\n top: !position ? 0 : undefined,\n left: !position ? 0 : undefined,\n zIndex: 100000, // should match the z-index in ModalTrigger\n ...position?.position,\n maxHeight: position?.maxHeight ?? '100vh'\n }\n },\n placement: position?.placement ?? null,\n triggerAnchorPoint: position?.triggerAnchorPoint ?? null,\n arrowProps: {\n 'aria-hidden': 'true',\n role: 'presentation',\n style: {\n left: position?.arrowOffsetLeft,\n top: position?.arrowOffsetTop\n }\n },\n updatePosition\n };\n}\n\nfunction useResize(onResize) {\n useLayoutEffect(() => {\n window.addEventListener('resize', onResize, false);\n return () => {\n window.removeEventListener('resize', onResize, false);\n };\n }, [onResize]);\n}\n\nfunction translateRTL(position, direction) {\n if (direction === 'rtl') {\n return position.replace('start', 'right').replace('end', 'left');\n }\n return position.replace('start', 'left').replace('end', 'right');\n}\n"],"names":[],"version":3,"file":"useOverlayPosition.main.js.map"} |