@elastic/eui/es/components/color_picker/saturation.js

Elastic UI Component Library

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
var _excluded = ["className", "color", "data-test-subj", "hex", "id", "onChange"];
function _extends() { _extends = Object.assign ? Object.assign.bind() : function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"]; if (null != _i) { var _s, _e, _x, _r, _arr = [], _n = !0, _d = !1; try { if (_x = (_i = _i.call(arr)).next, 0 === i) { if (Object(_i) !== _i) return; _n = !1; } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0); } catch (err) { _d = !0, _e = err; } finally { try { if (!_n && null != _i.return && (_r = _i.return(), Object(_r) !== _r)) return; } finally { if (_d) throw _e; } } return _arr; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

import React, { forwardRef, useEffect, useRef, useState } from 'react';
import PropTypes from "prop-types";
import classNames from 'classnames';
import { keys, useMouseMove } from '../../services';
import { isNil } from '../../services/predicate';
import { useEuiI18n } from '../i18n';
import { getEventPosition } from './utils';
import { jsx as ___EmotionJSX } from "@emotion/react";
export var EuiSaturation = /*#__PURE__*/forwardRef(function (_ref, ref) {
  var className = _ref.className,
    _ref$color = _ref.color,
    color = _ref$color === void 0 ? [1, 0, 0] : _ref$color,
    _ref$dataTestSubj = _ref['data-test-subj'],
    dataTestSubj = _ref$dataTestSubj === void 0 ? 'euiSaturation' : _ref$dataTestSubj,
    hex = _ref.hex,
    id = _ref.id,
    onChange = _ref.onChange,
    rest = _objectWithoutProperties(_ref, _excluded);
  var _useEuiI18n = useEuiI18n(['euiSaturation.ariaLabel', 'euiSaturation.screenReaderInstructions'], ['HSV color mode saturation and value 2-axis slider', "Arrow keys to navigate the square color gradient. Coordinates will be used to calculate HSV color mode 'saturation' and 'value' numbers, in the range of 0 to 1. Left and right to change the saturation. Up and down change the value."]),
    _useEuiI18n2 = _slicedToArray(_useEuiI18n, 2),
    roleDescString = _useEuiI18n2[0],
    instructionsString = _useEuiI18n2[1];
  var _useState = useState({
      left: 0,
      top: 0
    }),
    _useState2 = _slicedToArray(_useState, 2),
    indicator = _useState2[0],
    setIndicator = _useState2[1];
  var _useState3 = useState([]),
    _useState4 = _slicedToArray(_useState3, 2),
    lastColor = _useState4[0],
    setLastColor = _useState4[1];
  var boxRef = useRef(null);
  useEffect(function () {
    // Mimics `componentDidMount` and `componentDidUpdate`
    var _color = _slicedToArray(color, 3),
      s = _color[1],
      v = _color[2];
    if (!isNil(boxRef.current) && lastColor.join() !== color.join()) {
      var _boxRef$current$getBo = boxRef.current.getBoundingClientRect(),
        height = _boxRef$current$getBo.height,
        width = _boxRef$current$getBo.width;
      setIndicator({
        left: s * width,
        top: (1 - v) * height
      });
    }
  }, [color, lastColor]);
  var calculateColor = function calculateColor(_ref2) {
    var top = _ref2.top,
      height = _ref2.height,
      left = _ref2.left,
      width = _ref2.width;
    var _color2 = _slicedToArray(color, 1),
      h = _color2[0];
    var s = left / width;
    var v = 1 - top / height;
    return [h, s, v];
  };
  var handleUpdate = function handleUpdate(box) {
    var left = box.left,
      top = box.top;
    setIndicator({
      left: left,
      top: top
    });
    var newColor = calculateColor(box);
    setLastColor(newColor);
    onChange(newColor);
  };
  var handleChange = function handleChange(location) {
    if (isNil(boxRef === null || boxRef === void 0 ? void 0 : boxRef.current)) return;
    var box = getEventPosition(location, boxRef.current);
    handleUpdate(box);
  };
  var _useMouseMove = useMouseMove(handleChange, boxRef.current),
    _useMouseMove2 = _slicedToArray(_useMouseMove, 2),
    handleMouseDown = _useMouseMove2[0],
    handleInteraction = _useMouseMove2[1];
  var handleKeyDown = function handleKeyDown(event) {
    if (isNil(boxRef === null || boxRef === void 0 ? void 0 : boxRef.current)) return;
    var _boxRef$current$getBo2 = boxRef.current.getBoundingClientRect(),
      height = _boxRef$current$getBo2.height,
      width = _boxRef$current$getBo2.width;
    var left = indicator.left,
      top = indicator.top;
    var heightScale = height / 100;
    var widthScale = width / 100;
    var newLeft = left;
    var newTop = top;
    switch (event.key) {
      case keys.ARROW_DOWN:
        event.preventDefault();
        newTop = top < height ? top + heightScale : height;
        break;
      case keys.ARROW_LEFT:
        event.preventDefault();
        newLeft = left > 0 ? left - widthScale : 0;
        break;
      case keys.ARROW_UP:
        event.preventDefault();
        newTop = top > 0 ? top - heightScale : 0;
        break;
      case keys.ARROW_RIGHT:
        event.preventDefault();
        newLeft = left < width ? left + widthScale : width;
        break;
      default:
        return;
    }
    var newPosition = {
      left: newLeft,
      top: newTop
    };
    setIndicator(newPosition);
    var newColor = calculateColor(_objectSpread({
      width: width,
      height: height
    }, newPosition));
    onChange(newColor);
  };
  var classes = classNames('euiSaturation', className);
  var instructionsId = "".concat(id, "-instructions");
  return ___EmotionJSX("div", _extends({
    onMouseDown: handleMouseDown,
    onTouchStart: handleInteraction,
    onTouchMove: handleInteraction,
    onKeyDown: handleKeyDown,
    ref: ref,
    className: classes,
    "data-test-subj": dataTestSubj,
    style: {
      background: "hsl(".concat(color[0], ", 100%, 50%)")
    },
    tabIndex: -1
  }, rest), ___EmotionJSX("div", {
    className: "euiSaturation__lightness",
    ref: boxRef
  }, ___EmotionJSX("div", {
    className: "euiSaturation__saturation"
  })), ___EmotionJSX("button", {
    id: "".concat(id, "-saturationIndicator"),
    className: "euiSaturation__indicator",
    style: _objectSpread({}, indicator),
    "aria-roledescription": roleDescString,
    "aria-label": hex,
    "aria-describedby": instructionsId
  }), ___EmotionJSX("span", {
    hidden: true,
    "aria-live": "assertive"
  }, hex), ___EmotionJSX("span", {
    hidden: true,
    id: instructionsId
  }, instructionsString));
});
EuiSaturation.propTypes = {
  className: PropTypes.string,
  "aria-label": PropTypes.string,
  "data-test-subj": PropTypes.string,
  css: PropTypes.any,
  color: PropTypes.any,
  onChange: PropTypes.func.isRequired,
  hex: PropTypes.string
};
EuiSaturation.displayName = 'EuiSaturation';