react-aria/dist/private/color/useColorArea.mjs.map

Spectrum UI components in React

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* Copyright 2020 Adobe. 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 {AriaLabelingProps, DOMAttributes, DOMProps, RefObject} from '@react-types/shared';\nimport {ColorAreaProps, ColorAreaState} from 'react-stately/useColorAreaState';\nimport {ColorChannel} from 'react-stately/Color';\nimport {focusWithoutScrolling} from '../utils/focusWithoutScrolling';\nimport intlMessages from '../../intl/color/*.json';\nimport {isAndroid, isIOS} from '../utils/platform';\nimport {mergeProps} from '../utils/mergeProps';\nimport React, {ChangeEvent, InputHTMLAttributes, useCallback, useRef, useState} from 'react';\nimport {useColorAreaGradient} from './useColorAreaGradient';\n// @ts-ignore\nimport {useFocus} from '../interactions/useFocus';\nimport {useFocusWithin} from '../interactions/useFocusWithin';\nimport {useFormReset} from '../utils/useFormReset';\nimport {useGlobalListeners} from '../utils/useGlobalListeners';\nimport {useKeyboard} from '../interactions/useKeyboard';\nimport {useLabels} from '../utils/useLabels';\nimport {useLocale} from '../i18n/I18nProvider';\nimport {useLocalizedStringFormatter} from '../i18n/useLocalizedStringFormatter';\nimport {useMove} from '../interactions/useMove';\nimport {useVisuallyHidden} from '../visually-hidden/VisuallyHidden';\n\nexport interface AriaColorAreaProps extends ColorAreaProps, DOMProps, AriaLabelingProps {\n  /**\n   * The name of the x channel input element, used when submitting an HTML form. See\n   * [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#htmlattrdefname).\n   */\n  xName?: string;\n  /**\n   * The name of the y channel input element, used when submitting an HTML form. See\n   * [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#htmlattrdefname).\n   */\n  yName?: string;\n  /**\n   * The `<form>` element to associate the ColorArea with.\n   * The value of this attribute must be the id of a `<form>` in the same document.\n   * See [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/input#form).\n   */\n  form?: string;\n}\n\nexport interface ColorAreaAria {\n  /** Props for the color area container element. */\n  colorAreaProps: DOMAttributes;\n  /** Props for the thumb element. */\n  thumbProps: DOMAttributes;\n  /** Props for the visually hidden horizontal range input element. */\n  xInputProps: InputHTMLAttributes<HTMLInputElement>;\n  /** Props for the visually hidden vertical range input element. */\n  yInputProps: InputHTMLAttributes<HTMLInputElement>;\n}\n\nexport interface AriaColorAreaOptions extends AriaColorAreaProps {\n  /** A ref to the input that represents the x axis of the color area. */\n  inputXRef: RefObject<HTMLInputElement | null>;\n  /** A ref to the input that represents the y axis of the color area. */\n  inputYRef: RefObject<HTMLInputElement | null>;\n  /** A ref to the color area containing element. */\n  containerRef: RefObject<Element | null>;\n}\n\n/**\n * Provides the behavior and accessibility implementation for a color area component. Color area\n * allows users to adjust two channels of an RGB, HSL or HSB color value against a two-dimensional\n * gradient background.\n */\nexport function useColorArea(props: AriaColorAreaOptions, state: ColorAreaState): ColorAreaAria {\n  let {\n    isDisabled,\n    inputXRef,\n    inputYRef,\n    containerRef,\n    'aria-label': ariaLabel,\n    xName,\n    yName,\n    form\n  } = props;\n  let stringFormatter = useLocalizedStringFormatter(intlMessages, '@react-aria/color');\n\n  let {addGlobalListener, removeGlobalListener} = useGlobalListeners();\n\n  let {direction, locale} = useLocale();\n\n  let [focusedInput, setFocusedInput] = useState<'x' | 'y' | null>(null);\n  let focusInput = useCallback(\n    (inputRef: RefObject<HTMLInputElement | null> = inputXRef) => {\n      if (inputRef.current) {\n        focusWithoutScrolling(inputRef.current);\n      }\n    },\n    [inputXRef]\n  );\n\n  useFormReset(inputXRef, state.defaultValue, state.setValue);\n\n  let [valueChangedViaKeyboard, setValueChangedViaKeyboard] = useState(false);\n  let [valueChangedViaInputChangeEvent, setValueChangedViaInputChangeEvent] = useState(false);\n  let {xChannel, yChannel, zChannel} = state.channels;\n  let xChannelStep = state.xChannelStep;\n  let yChannelStep = state.yChannelStep;\n\n  let currentPosition = useRef<{x: number; y: number} | null>(null);\n\n  let {keyboardProps} = useKeyboard({\n    onKeyDown(e) {\n      // these are the cases that useMove doesn't handle\n      if (!/^(PageUp|PageDown|Home|End)$/.test(e.key)) {\n        e.continuePropagation();\n        return;\n      }\n      // same handling as useMove, don't need to stop propagation, useKeyboard will do that for us\n      e.preventDefault();\n      // remember to set this and unset it so that onChangeEnd is fired\n      state.setDragging(true);\n      setValueChangedViaKeyboard(true);\n      let dir;\n      switch (e.key) {\n        case 'PageUp':\n          state.incrementY(state.yChannelPageStep);\n          dir = 'y';\n          break;\n        case 'PageDown':\n          state.decrementY(state.yChannelPageStep);\n          dir = 'y';\n          break;\n        case 'Home':\n          direction === 'rtl'\n            ? state.incrementX(state.xChannelPageStep)\n            : state.decrementX(state.xChannelPageStep);\n          dir = 'x';\n          break;\n        case 'End':\n          direction === 'rtl'\n            ? state.decrementX(state.xChannelPageStep)\n            : state.incrementX(state.xChannelPageStep);\n          dir = 'x';\n          break;\n      }\n      state.setDragging(false);\n      if (dir) {\n        let input = dir === 'x' ? inputXRef : inputYRef;\n        focusInput(input);\n        setFocusedInput(dir);\n      }\n    }\n  });\n\n  let moveHandler = {\n    onMoveStart() {\n      currentPosition.current = null;\n      state.setDragging(true);\n    },\n    onMove({deltaX, deltaY, pointerType, shiftKey}) {\n      let {\n        incrementX,\n        decrementX,\n        incrementY,\n        decrementY,\n        xChannelPageStep,\n        xChannelStep,\n        yChannelPageStep,\n        yChannelStep,\n        getThumbPosition,\n        setColorFromPoint\n      } = state;\n      if (currentPosition.current == null) {\n        currentPosition.current = getThumbPosition();\n      }\n      let {width, height} = containerRef.current?.getBoundingClientRect() || {width: 0, height: 0};\n      let valueChanged = deltaX !== 0 || deltaY !== 0;\n      if (pointerType === 'keyboard') {\n        let deltaXValue =\n          shiftKey && xChannelPageStep > xChannelStep ? xChannelPageStep : xChannelStep;\n        let deltaYValue =\n          shiftKey && yChannelPageStep > yChannelStep ? yChannelPageStep : yChannelStep;\n        if ((deltaX > 0 && direction === 'ltr') || (deltaX < 0 && direction === 'rtl')) {\n          incrementX(deltaXValue);\n        } else if ((deltaX < 0 && direction === 'ltr') || (deltaX > 0 && direction === 'rtl')) {\n          decrementX(deltaXValue);\n        } else if (deltaY > 0) {\n          decrementY(deltaYValue);\n        } else if (deltaY < 0) {\n          incrementY(deltaYValue);\n        }\n        setValueChangedViaKeyboard(valueChanged);\n        // set the focused input based on which axis has the greater delta\n        focusedInput = valueChanged && Math.abs(deltaY) > Math.abs(deltaX) ? 'y' : 'x';\n        setFocusedInput(focusedInput);\n      } else {\n        currentPosition.current.x += ((direction === 'rtl' ? -1 : 1) * deltaX) / width;\n        currentPosition.current.y += deltaY / height;\n        setColorFromPoint(currentPosition.current.x, currentPosition.current.y);\n      }\n    },\n    onMoveEnd() {\n      isOnColorArea.current = false;\n      state.setDragging(false);\n      let input = focusedInput === 'x' ? inputXRef : inputYRef;\n      focusInput(input);\n    }\n  };\n  let {moveProps: movePropsThumb} = useMove(moveHandler);\n\n  let {focusWithinProps} = useFocusWithin({\n    onFocusWithinChange: (focusWithin: boolean) => {\n      if (!focusWithin) {\n        setValueChangedViaKeyboard(false);\n        setValueChangedViaInputChangeEvent(false);\n      }\n    }\n  });\n\n  let currentPointer = useRef<number | null | undefined>(undefined);\n  let isOnColorArea = useRef<boolean>(false);\n  let {moveProps: movePropsContainer} = useMove({\n    onMoveStart() {\n      if (isOnColorArea.current) {\n        moveHandler.onMoveStart();\n      }\n    },\n    onMove(e) {\n      if (isOnColorArea.current) {\n        moveHandler.onMove(e);\n      }\n    },\n    onMoveEnd() {\n      if (isOnColorArea.current) {\n        moveHandler.onMoveEnd();\n      }\n    }\n  });\n\n  let onThumbDown = (id: number | null | undefined) => {\n    if (!state.isDragging) {\n      currentPointer.current = id;\n      setValueChangedViaKeyboard(false);\n      focusInput();\n      state.setDragging(true);\n      if (typeof PointerEvent !== 'undefined') {\n        addGlobalListener(window, 'pointerup', onThumbUp, false);\n      } else {\n        addGlobalListener(window, 'mouseup', onThumbUp, false);\n        addGlobalListener(window, 'touchend', onThumbUp, false);\n      }\n    }\n  };\n\n  let onThumbUp = e => {\n    let id = e.pointerId ?? e.changedTouches?.[0].identifier;\n    if (id === currentPointer.current) {\n      setValueChangedViaKeyboard(false);\n      focusInput();\n      state.setDragging(false);\n      currentPointer.current = undefined;\n      isOnColorArea.current = false;\n\n      if (typeof PointerEvent !== 'undefined') {\n        removeGlobalListener(window, 'pointerup', onThumbUp, false);\n      } else {\n        removeGlobalListener(window, 'mouseup', onThumbUp, false);\n        removeGlobalListener(window, 'touchend', onThumbUp, false);\n      }\n    }\n  };\n\n  let onColorAreaDown = (\n    colorArea: Element,\n    id: number | null | undefined,\n    clientX: number,\n    clientY: number\n  ) => {\n    let rect = colorArea.getBoundingClientRect();\n    let {width, height} = rect;\n    let x = (clientX - rect.x) / width;\n    let y = (clientY - rect.y) / height;\n    if (direction === 'rtl') {\n      x = 1 - x;\n    }\n    if (\n      x >= 0 &&\n      x <= 1 &&\n      y >= 0 &&\n      y <= 1 &&\n      !state.isDragging &&\n      currentPointer.current === undefined\n    ) {\n      isOnColorArea.current = true;\n      setValueChangedViaKeyboard(false);\n      currentPointer.current = id;\n      state.setColorFromPoint(x, y);\n\n      focusInput();\n      state.setDragging(true);\n\n      if (typeof PointerEvent !== 'undefined') {\n        addGlobalListener(window, 'pointerup', onColorAreaUp, false);\n      } else {\n        addGlobalListener(window, 'mouseup', onColorAreaUp, false);\n        addGlobalListener(window, 'touchend', onColorAreaUp, false);\n      }\n    }\n  };\n\n  let onColorAreaUp = e => {\n    let id = e.pointerId ?? e.changedTouches?.[0].identifier;\n    if (isOnColorArea.current && id === currentPointer.current) {\n      isOnColorArea.current = false;\n      setValueChangedViaKeyboard(false);\n      currentPointer.current = undefined;\n      state.setDragging(false);\n      focusInput();\n\n      if (typeof PointerEvent !== 'undefined') {\n        removeGlobalListener(window, 'pointerup', onColorAreaUp, false);\n      } else {\n        removeGlobalListener(window, 'mouseup', onColorAreaUp, false);\n        removeGlobalListener(window, 'touchend', onColorAreaUp, false);\n      }\n    }\n  };\n\n  let colorAreaInteractions = isDisabled\n    ? {}\n    : mergeProps(\n        {\n          ...(typeof PointerEvent !== 'undefined'\n            ? {\n                onPointerDown: (e: React.PointerEvent) => {\n                  if (\n                    e.pointerType === 'mouse' &&\n                    (e.button !== 0 || e.altKey || e.ctrlKey || e.metaKey)\n                  ) {\n                    return;\n                  }\n                  onColorAreaDown(e.currentTarget, e.pointerId, e.clientX, e.clientY);\n                }\n              }\n            : {\n                onMouseDown: (e: React.MouseEvent) => {\n                  if (e.button !== 0 || e.altKey || e.ctrlKey || e.metaKey) {\n                    return;\n                  }\n                  onColorAreaDown(e.currentTarget, undefined, e.clientX, e.clientY);\n                },\n                onTouchStart: (e: React.TouchEvent) => {\n                  onColorAreaDown(\n                    e.currentTarget,\n                    e.changedTouches[0].identifier,\n                    e.changedTouches[0].clientX,\n                    e.changedTouches[0].clientY\n                  );\n                }\n              })\n        },\n        movePropsContainer\n      );\n\n  let thumbInteractions = isDisabled\n    ? {}\n    : mergeProps(\n        {\n          ...(typeof PointerEvent !== 'undefined'\n            ? {\n                onPointerDown: (e: React.PointerEvent) => {\n                  if (\n                    e.pointerType === 'mouse' &&\n                    (e.button !== 0 || e.altKey || e.ctrlKey || e.metaKey)\n                  ) {\n                    return;\n                  }\n                  onThumbDown(e.pointerId);\n                }\n              }\n            : {\n                onMouseDown: (e: React.MouseEvent) => {\n                  if (e.button !== 0 || e.altKey || e.ctrlKey || e.metaKey) {\n                    return;\n                  }\n                  onThumbDown(undefined);\n                },\n                onTouchStart: (e: React.TouchEvent) => {\n                  onThumbDown(e.changedTouches[0].identifier);\n                }\n              })\n        },\n        focusWithinProps,\n        keyboardProps,\n        movePropsThumb\n      );\n\n  let {focusProps: xInputFocusProps} = useFocus({\n    onFocus: () => {\n      setFocusedInput('x');\n    }\n  });\n\n  let {focusProps: yInputFocusProps} = useFocus({\n    onFocus: () => {\n      setFocusedInput('y');\n    }\n  });\n\n  const onChange = (e: ChangeEvent<HTMLInputElement>) => {\n    const {target} = e;\n    setValueChangedViaInputChangeEvent(true);\n    if (target === inputXRef.current) {\n      state.setXValue(parseFloat(target.value));\n    } else if (target === inputYRef.current) {\n      state.setYValue(parseFloat(target.value));\n    }\n  };\n\n  let isMobile = isIOS() || isAndroid();\n\n  let value = state.getDisplayColor();\n  const getAriaValueTextForChannel = useCallback(\n    (channel: ColorChannel) => {\n      const isAfterInput = valueChangedViaInputChangeEvent || valueChangedViaKeyboard;\n      return `${\n        isAfterInput\n          ? stringFormatter.format('colorNameAndValue', {\n              name: value.getChannelName(channel, locale),\n              value: value.formatChannelValue(channel, locale)\n            })\n          : [\n              stringFormatter.format('colorNameAndValue', {\n                name: value.getChannelName(channel, locale),\n                value: value.formatChannelValue(channel, locale)\n              }),\n              stringFormatter.format('colorNameAndValue', {\n                name: value.getChannelName(channel === yChannel ? xChannel : yChannel, locale),\n                value: value.formatChannelValue(channel === yChannel ? xChannel : yChannel, locale)\n              }),\n              stringFormatter.format('colorNameAndValue', {\n                name: value.getChannelName(zChannel, locale),\n                value: value.formatChannelValue(zChannel, locale)\n              })\n            ].join(', ')\n      }, ${value.getColorName(locale)}`;\n    },\n    [\n      locale,\n      value,\n      stringFormatter,\n      valueChangedViaInputChangeEvent,\n      valueChangedViaKeyboard,\n      xChannel,\n      yChannel,\n      zChannel\n    ]\n  );\n\n  let colorPickerLabel = stringFormatter.format('colorPicker');\n\n  let xInputLabellingProps = useLabels({\n    ...props,\n    'aria-label': ariaLabel\n      ? stringFormatter.format('colorInputLabel', {\n          label: ariaLabel,\n          channelLabel: colorPickerLabel\n        })\n      : colorPickerLabel\n  });\n\n  let yInputLabellingProps = useLabels({\n    ...props,\n    'aria-label': ariaLabel\n      ? stringFormatter.format('colorInputLabel', {\n          label: ariaLabel,\n          channelLabel: colorPickerLabel\n        })\n      : colorPickerLabel\n  });\n\n  let colorAreaLabellingProps = useLabels(\n    {\n      ...props,\n      'aria-label': ariaLabel ? `${ariaLabel}, ${colorPickerLabel}` : undefined\n    },\n    isMobile ? colorPickerLabel : undefined\n  );\n\n  let ariaRoleDescription = stringFormatter.format('twoDimensionalSlider');\n\n  let {visuallyHiddenProps} = useVisuallyHidden({\n    style: {\n      opacity: '0.0001',\n      width: '100%',\n      height: '100%',\n      pointerEvents: 'none'\n    }\n  });\n\n  let {colorAreaStyleProps, thumbStyleProps} = useColorAreaGradient({\n    direction,\n    state,\n    xChannel,\n    yChannel,\n    zChannel\n  });\n\n  return {\n    colorAreaProps: {\n      ...colorAreaLabellingProps,\n      ...colorAreaInteractions,\n      ...colorAreaStyleProps,\n      role: 'group'\n    },\n    thumbProps: {\n      ...thumbInteractions,\n      ...thumbStyleProps,\n      role: 'presentation'\n    },\n    xInputProps: {\n      ...xInputLabellingProps,\n      ...visuallyHiddenProps,\n      ...xInputFocusProps,\n      type: 'range',\n      min: state.value.getChannelRange(xChannel).minValue,\n      max: state.value.getChannelRange(xChannel).maxValue,\n      step: xChannelStep,\n      'aria-roledescription': ariaRoleDescription,\n      'aria-valuetext': getAriaValueTextForChannel(xChannel),\n      'aria-orientation': 'horizontal',\n      'aria-describedby': props['aria-describedby'],\n      'aria-details': props['aria-details'],\n      disabled: isDisabled,\n      value: state.value.getChannelValue(xChannel),\n      name: xName,\n      form,\n      tabIndex: isMobile || !focusedInput || focusedInput === 'x' ? undefined : -1,\n      /*\n        So that only a single \"2d slider\" control shows up when listing form elements for screen readers,\n        add aria-hidden=\"true\" to the unfocused control when the value has not changed via the keyboard,\n        but remove aria-hidden to reveal the input for each channel when the value has changed with the keyboard.\n      */\n      'aria-hidden':\n        isMobile || !focusedInput || focusedInput === 'x' || valueChangedViaKeyboard\n          ? undefined\n          : 'true',\n      onChange\n    },\n    yInputProps: {\n      ...yInputLabellingProps,\n      ...visuallyHiddenProps,\n      ...yInputFocusProps,\n      type: 'range',\n      min: state.value.getChannelRange(yChannel).minValue,\n      max: state.value.getChannelRange(yChannel).maxValue,\n      step: yChannelStep,\n      'aria-roledescription': ariaRoleDescription,\n      'aria-valuetext': getAriaValueTextForChannel(yChannel),\n      'aria-orientation': 'vertical',\n      'aria-describedby': props['aria-describedby'],\n      'aria-details': props['aria-details'],\n      disabled: isDisabled,\n      value: state.value.getChannelValue(yChannel),\n      name: yName,\n      form,\n      tabIndex: isMobile || focusedInput === 'y' ? undefined : -1,\n      /*\n        So that only a single \"2d slider\" control shows up when listing form elements for screen readers,\n        add aria-hidden=\"true\" to the unfocused input when the value has not changed via the keyboard,\n        but remove aria-hidden to reveal the input for each channel when the value has changed with the keyboard.\n      */\n      'aria-hidden':\n        isMobile || focusedInput === 'y' || valueChangedViaKeyboard ? undefined : 'true',\n      onChange\n    }\n  };\n}\n"],"names":[],"version":3,"file":"useColorArea.mjs.map"}