@react-spectrum/s2/dist/Image.css.map

Spectrum 2 UI components in React

{"mappings":"ACiHsB;EAAA;;;;EAAA;;;;EAAA;;;;EAKJ;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA;;;;EAAA","sources":["a1371b57e9afeb00","packages/@react-spectrum/s2/src/Image.tsx"],"sourcesContent":["@import \"be7e52eb05f9e81c\";\n@import \"b32b10d1bd9c4a50\";\n","import {ContextValue, SlotProps} from 'react-aria-components';\nimport {createContext, ForwardedRef, forwardRef, HTMLAttributeReferrerPolicy, ReactNode, useCallback, useContext, useMemo, useReducer, useRef, version} from 'react';\nimport {DefaultImageGroup, ImageGroup} from './ImageCoordinator';\nimport {loadingStyle, useIsSkeleton, useLoadingAnimation} from './Skeleton';\nimport {mergeStyles} from '../style/runtime';\nimport {style} from '../style' with {type: 'macro'};\nimport {StyleString} from '../style/types';\nimport {UnsafeStyles} from './style-utils';\nimport {useLayoutEffect} from '@react-aria/utils';\nimport {useSpectrumContextProps} from './useSpectrumContextProps';\n\nexport interface ImageProps extends UnsafeStyles, SlotProps {\n  /** The URL of the image. */\n  src?: string,\n  // TODO\n  // srcSet?: string,\n  // sizes?: string,\n  /** Accessible alt text for the image. */\n  alt?: string,\n  /**\n   * Indicates if the fetching of the image must be done using a CORS request.\n   * [See MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/crossorigin).\n   */\n  crossOrigin?: 'anonymous' | 'use-credentials',\n  /**\n   * Whether the browser should decode images synchronously or asynchronously.\n   * [See MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#decoding).\n   */\n  decoding?: 'async' | 'auto' | 'sync',\n  /**\n   * Provides a hint of the relative priority to use when fetching the image.\n   * [See MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#fetchpriority).\n   */\n  fetchPriority?: 'high' | 'low' | 'auto',\n  /**\n   * Whether the image should be loaded immediately or lazily when scrolled into view.\n   * [See MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#loading).\n   */\n  loading?: 'eager' | 'lazy',\n  /**\n   * A string indicating which referrer to use when fetching the resource.\n   * [See MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#referrerpolicy).\n   */\n  referrerPolicy?: HTMLAttributeReferrerPolicy,\n  /** Spectrum-defined styles, returned by the `style()` macro. */\n  styles?: StyleString,\n  /** A function that is called to render a fallback when the image fails to load. */\n  renderError?: () => ReactNode,\n  /**\n   * A group of images to coordinate between, matching the group passed to the `<ImageCoordinator>` component.\n   * If not provided, the default image group is used.\n   */\n  group?: ImageGroup\n}\n\ninterface ImageContextValue extends ImageProps {\n  hidden?: boolean\n}\n\nexport const ImageContext = createContext<ContextValue<Partial<ImageContextValue>, HTMLDivElement>>(null);\n\ntype ImageState = 'loading' | 'loaded' | 'revealed' | 'error';\ninterface State {\n  state: ImageState,\n  src: string,\n  startTime: number,\n  loadTime: number\n}\n\ntype Action = \n  | {type: 'update', src: string}\n  | {type: 'loaded'}\n  | {type: 'revealed'}\n  | {type: 'error'};\n\nfunction createState(src: string): State {\n  return {\n    state: 'loading',\n    src,\n    startTime: Date.now(),\n    loadTime: 0\n  };\n}\n\nfunction reducer(state: State, action: Action): State {\n  switch (action.type) {\n    case 'update': {\n      return {\n        state: 'loading',\n        src: action.src,\n        startTime: Date.now(),\n        loadTime: 0\n      };\n    }\n    case 'loaded':\n    case 'error': {\n      return {\n        ...state,\n        state: action.type\n      };\n    }\n    case 'revealed': {\n      return {\n        ...state,\n        state: 'revealed',\n        loadTime: Date.now() - state.startTime\n      };\n    }\n    default:\n      return state;\n  }\n}\n\nconst wrapperStyles = style({\n  backgroundColor: 'gray-100',\n  overflow: 'hidden'\n});\n\nconst imgStyles = style({\n  display: 'block',\n  width: 'full',\n  height: 'full',\n  objectFit: 'inherit',\n  objectPosition: 'inherit',\n  opacity: {\n    default: 0,\n    isRevealed: 1\n  },\n  transition: {\n    default: 'none',\n    isTransitioning: 'opacity'\n  },\n  transitionDuration: 500\n});\n\nexport const Image = forwardRef(function Image(props: ImageProps, domRef: ForwardedRef<HTMLDivElement>) {\n  [props, domRef] = useSpectrumContextProps(props, domRef, ImageContext);\n\n  let {\n    src = '',\n    styles,\n    UNSAFE_className = '',\n    UNSAFE_style,\n    renderError,\n    group = DefaultImageGroup,\n    // TODO\n    // srcSet,\n    // sizes,\n    alt,\n    crossOrigin,\n    decoding,\n    fetchPriority,\n    loading,\n    referrerPolicy,\n    slot\n  } = props;\n  let hidden = (props as ImageContextValue).hidden;\n  \n  let {revealAll, register, unregister, load} = useContext(group);\n  let [{state, src: lastSrc, loadTime}, dispatch] = useReducer(reducer, src, createState);\n\n  if (src !== lastSrc && !hidden) {\n    dispatch({type: 'update', src});\n  }\n\n  if (state === 'loaded' && revealAll && !hidden) {\n    dispatch({type: 'revealed'});\n  }\n\n  let imgRef = useRef<HTMLImageElement | null>(null);\n  useLayoutEffect(() => {\n    if (hidden) {\n      return;\n    }\n\n    register(src);\n    return () => {\n      unregister(src);\n    };\n  }, [hidden, register, unregister, src]);\n\n  let onLoad = useCallback(() => {\n    load(src);\n    dispatch({type: 'loaded'});\n  }, [load, src]);\n\n  let onError = useCallback(() => {\n    dispatch({type: 'error'});\n    unregister(src);\n  }, [unregister, src]);\n\n  let isSkeleton = useIsSkeleton();\n  let isAnimating = isSkeleton || state === 'loading' || state === 'loaded';\n  let animation = useLoadingAnimation(isAnimating);\n  useLayoutEffect(() => {\n    if (hidden) {\n      return;\n    }\n\n    // If the image is already loaded, update state immediately instead of waiting for onLoad.\n    if (state === 'loading' && imgRef.current?.complete) {\n      // Queue a microtask so we don't hit React's update limit.\n      // TODO: is this necessary?\n      queueMicrotask(onLoad);\n    }\n\n    animation(domRef.current);\n  });\n\n  if (props.alt == null && process.env.NODE_ENV !== 'production') {\n    console.warn(\n      'The `alt` prop was not provided to an image. ' +\n      'Add `alt` text for screen readers, or set `alt=\"\"` prop to indicate that the image ' +\n      'is decorative or redundant with displayed text and should not be announced by screen readers.'\n    );\n  }\n\n  let errorState = !isSkeleton && state === 'error' && renderError?.();\n  let isRevealed = state === 'revealed' && !isSkeleton;\n  let isTransitioning = isRevealed && loadTime > 200;\n  return useMemo(() => hidden ? null : (\n    <div\n      ref={domRef}\n      slot={slot || undefined}\n      style={UNSAFE_style}\n      className={UNSAFE_className + mergeStyles(wrapperStyles, styles) + ' '  + (isAnimating ? loadingStyle : '')}>\n      {errorState}\n      {!errorState && (\n        <img\n          {...getFetchPriorityProp(fetchPriority)}\n          src={src || undefined}\n          alt={alt}\n          crossOrigin={crossOrigin}\n          decoding={decoding}\n          loading={loading}\n          referrerPolicy={referrerPolicy}\n          ref={imgRef}\n          onLoad={onLoad}\n          onError={onError}\n          className={imgStyles({isRevealed, isTransitioning})} />\n        )}\n    </div>\n  ), [slot, hidden, domRef, UNSAFE_style, UNSAFE_className, styles, isAnimating, errorState, src, alt, crossOrigin, decoding, fetchPriority, loading, referrerPolicy, onLoad, onError, isRevealed, isTransitioning]);\n});\n\nfunction getFetchPriorityProp(fetchPriority?: 'high' | 'low' | 'auto'): Record<string, string | undefined> {\n  const pieces = version.split('.');\n  const major = parseInt(pieces[0], 10);\n  if (major >= 19) {\n    return {fetchPriority};\n  }\n  return {fetchpriority: fetchPriority};\n}\n"],"names":[],"version":3,"file":"Image.css.map"}