vcc-ui/es/components/slider/index.js

VCC UI is a collection of React UI Components that can be used for developing front-end applications at Volvo Car Corporation.

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

import React, { Component } from "react";
import PropTypes from "prop-types";
import { Arrow } from "../arrow";
import { Block, withTheme } from "../block";
import { Click } from "../click";
import { COLORS } from "../../constants/colors";
var KEY_LEFT = 37;
var KEY_UP = 38;
var KEY_RIGHT = 39;
var KEY_DOWN = 40;

var thumbStyle = function thumbStyle(left, isDragging) {
  return _objectSpread({
    position: "absolute",
    top: "0",
    left: left,
    width: "40px",
    height: "40px",
    border: "1px solid #bbb",
    background: "white",
    cursor: "ew-resize",
    display: "flex",
    alignItems: "center",
    justifyContent: "center"
  }, !isDragging && {
    transition: "left 200ms ease-out"
  });
};

var SliderComponent =
/*#__PURE__*/
function (_Component) {
  _inherits(SliderComponent, _Component);

  function SliderComponent(props) {
    var _this;

    _classCallCheck(this, SliderComponent);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(SliderComponent).call(this, props));

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "state", {
      isDragging: false,
      lastStep: 0,
      currentLeft: 0
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "componentDidUpdate", function (prevProps) {
      var initialValue = _this.props.initialValue;
      var prevInitialValue = prevProps.initialValue;

      if (initialValue !== prevInitialValue) {
        _this.setState(function () {
          return {
            currentStep: _this.getStepForValue(initialValue)
          };
        });
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "handleChange", function () {
      var _this$props$onChange = _this.props.onChange,
          onChange = _this$props$onChange === void 0 ? function () {} : _this$props$onChange;
      var _this$state = _this.state,
          lastStep = _this$state.lastStep,
          currentStep = _this$state.currentStep;

      var currentValue = _this.getCurrentValue();

      if (lastStep !== currentStep && typeof onChange === "function") {
        onChange(currentValue);
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getElementProperty", function (element, property) {
      return element && element.getBoundingClientRect ? element.getBoundingClientRect()[property] : 0;
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getElementWidth", function (element) {
      return _this.getElementProperty(element, "width");
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getElementLeft", function (element) {
      return _this.getElementProperty(element, "left");
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getNumberOfSteps", function () {
      var _this$props = _this.props,
          step = _this$props.step,
          minValue = _this$props.minValue,
          maxValue = _this$props.maxValue,
          _this$props$valueList = _this$props.valueList,
          valueList = _this$props$valueList === void 0 ? [] : _this$props$valueList;

      if (valueList.length > 0) {
        return valueList.length;
      } else {
        return (maxValue - minValue) / step + 1;
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getStepAtPercentagePosition", function (percentagePosition) {
      var steps = _this.getNumberOfSteps();

      return Math.round(percentagePosition * (steps - 1));
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getStepForValue", function (value) {
      var _this$props2 = _this.props,
          minValue = _this$props2.minValue,
          maxValue = _this$props2.maxValue,
          _this$props2$valueLis = _this$props2.valueList,
          valueList = _this$props2$valueLis === void 0 ? [] : _this$props2$valueLis;

      var steps = _this.getNumberOfSteps();

      var thisValue = value - minValue;
      var range = maxValue - minValue;

      if (valueList.length > 0) {
        return valueList.indexOf(value);
      } else {
        return Math.round((steps - 1) * thisValue / range);
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getValueAtStepPosition", function (step) {
      var _this$props3 = _this.props,
          minValue = _this$props3.minValue,
          maxValue = _this$props3.maxValue,
          _this$props3$valueLis = _this$props3.valueList,
          valueList = _this$props3$valueLis === void 0 ? [] : _this$props3$valueLis;

      var steps = _this.getNumberOfSteps();

      if (valueList.length > 0) {
        return valueList.find(function (value, index) {
          return index === step;
        });
      } else {
        return minValue + step * ((maxValue - minValue) / (steps - 1));
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getCurrentValue", function () {
      var currentStep = _this.state.currentStep;
      return _this.getValueAtStepPosition(currentStep);
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "updateCurrentStep", function (position) {
      var trackWidth = _this.getElementWidth(_this.trackRef.current);

      var trackLeft = _this.getElementLeft(_this.trackRef.current);

      var thumbWidth = _this.getElementWidth(_this.thumbRef.current);

      var newPositionLeft = position - trackLeft - thumbWidth / 2;
      var isMax = newPositionLeft >= trackWidth - thumbWidth;
      var isMin = newPositionLeft <= 0;
      var currentPositionLeft = isMax ? trackWidth - thumbWidth : isMin ? 0 : newPositionLeft;
      var currentPositionPercent = currentPositionLeft / (trackWidth - thumbWidth);

      if (typeof position === "number") {
        _this.setState({
          currentStep: _this.getStepAtPercentagePosition(currentPositionPercent),
          currentLeft: currentPositionLeft
        });
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "getLeftPositionFromCurrentStep", function () {
      if (!_this.trackRef || !_this.thumbRef) {
        return 0;
      }

      var _this$state2 = _this.state,
          _this$state2$currentS = _this$state2.currentStep,
          currentStep = _this$state2$currentS === void 0 ? 0 : _this$state2$currentS,
          _this$state2$currentL = _this$state2.currentLeft,
          currentLeft = _this$state2$currentL === void 0 ? 0 : _this$state2$currentL;

      var steps = _this.getNumberOfSteps();

      var trackWidth = _this.getElementWidth(_this.trackRef.current);

      var thumbWidth = _this.getElementWidth(_this.thumbRef.current);

      var leftPos = currentStep * (trackWidth - thumbWidth) / (steps - 1);
      return currentLeft ? currentLeft : Math.round(leftPos);
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "handleMouseDown", function (e) {
      _this.updateCurrentStep(e.clientX);

      _this.setState({
        lastStep: _this.state.currentStep
      });
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "handleDragStart", function () {
      _this.setState({
        isDragging: true,
        lastStep: _this.state.currentStep
      });

      document.addEventListener("mousemove", _this.handleDrag);
      document.addEventListener("mouseup", _this.handleDragEnd);
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "handleDrag", function (e) {
      var onMoveStart = _this.props.onMoveStart;

      var currentValue = _this.getCurrentValue();

      e.preventDefault();
      e.stopPropagation();

      if (_this.state.isDragging) {
        _this.updateCurrentStep(e.touches ? e.touches[0].clientX : e.clientX);

        if (typeof onMoveStart === "function") {
          onMoveStart(currentValue);
        }
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "handleDragEnd", function () {
      var onMoveEnd = _this.props.onMoveEnd;

      _this.setState({
        isDragging: false
      });

      document.removeEventListener("mousemove", _this.handleDrag);
      document.removeEventListener("mouseup", _this.handleDragEnd);

      _this.thumbRef.current.blur();

      _this.resetCurrentLeft();

      _this.handleChange();

      if (typeof onMoveEnd === "function") {
        onMoveEnd();
      }
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "adjustCurrentStepBy", function (diff) {
      var currentStep = _this.state.currentStep;

      var steps = _this.getNumberOfSteps();

      var nextStep = currentStep + diff;

      _this.setState({
        currentStep: nextStep <= steps - 1 && nextStep >= 0 ? nextStep : currentStep
      });
    });

    _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "handleKeyDown", function (e) {
      e.preventDefault();
      e.stopPropagation();
      var key = e.which;

      if (key === KEY_UP || key === KEY_RIGHT) {
        _this.adjustCurrentStepBy(1);
      } else if (key === KEY_DOWN || key === KEY_LEFT) {
        _this.adjustCurrentStepBy(-1);
      }
    });

    _this.trackRef = React.createRef();
    _this.thumbRef = React.createRef();
    return _this;
  }

  _createClass(SliderComponent, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      var _this2 = this;

      var initialValue = this.props.initialValue;
      this.setState({
        currentStep: this.getStepForValue(initialValue)
      });
      var resizeTimer;

      this.resizeEventHandler = function () {
        clearTimeout(resizeTimer);
        resizeTimer = setTimeout(function () {
          _this2.forceUpdate();
        }, 1);
      };

      window.addEventListener("resize", this.resizeEventHandler);
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      window.removeEventListener("resize", this.resizeEventHandler);
    }
  }, {
    key: "resetCurrentLeft",
    value: function resetCurrentLeft() {
      this.setState({
        currentLeft: 0
      });
    }
  }, {
    key: "handleMouseUp",
    value: function handleMouseUp() {
      this.resetCurrentLeft();
      this.handleChange();
    }
  }, {
    key: "handleKeyUp",
    value: function handleKeyUp() {
      this.setState({
        lastStep: this.state.currentStep
      });
      this.handleChange();
    }
  }, {
    key: "renderThumb",
    value: function renderThumb() {
      var _this3 = this;

      var _this$props4 = this.props,
          minValue = _this$props4.minValue,
          maxValue = _this$props4.maxValue;
      var value = this.getCurrentValue();
      var left = this.getLeftPositionFromCurrentStep();
      return React.createElement(Click, {
        innerRef: this.thumbRef,
        extend: _objectSpread({}, thumbStyle(left, this.state.isDragging)),
        role: "slider",
        "aria-valuemin": minValue,
        "aria-valuemax": maxValue,
        "aria-valuenow": value,
        "aria-orientation": "horizontal",
        onMouseDown: function onMouseDown() {
          return _this3.handleDragStart();
        },
        onMouseMove: function onMouseMove(e) {
          return _this3.handleDrag(e);
        },
        onMouseUp: function onMouseUp() {
          return _this3.handleDragEnd();
        },
        onContextMenu: function onContextMenu() {
          return _this3.handleDragEnd();
        },
        onTouchStart: function onTouchStart() {
          return _this3.handleDragStart();
        },
        onTouchMove: function onTouchMove(e) {
          return _this3.handleDrag(e);
        },
        onTouchEnd: function onTouchEnd() {
          return _this3.handleDragEnd();
        },
        onKeyDown: function onKeyDown(e) {
          return _this3.handleKeyDown(e);
        },
        onKeyUp: function onKeyUp() {
          return _this3.handleKeyUp();
        }
      }, React.createElement(Arrow, {
        color: COLORS.blue,
        direction: "left"
      }), React.createElement(Arrow, {
        color: COLORS.blue,
        direction: "right"
      }));
    }
  }, {
    key: "render",
    value: function render() {
      var _this4 = this;

      var theme = this.props.theme;
      return React.createElement(Block, {
        extend: _objectSpread({
          position: "relative",
          height: "42px"
        }, theme.slider)
      }, React.createElement(Block, {
        extend: _objectSpread({
          position: "absolute",
          top: "9px",
          left: "0",
          right: "0",
          width: "100%",
          boxSizing: "border-box",
          height: "21px",
          border: "1px solid #bbb",
          background: "white"
        }, theme.sliderTrack),
        innerRef: this.trackRef,
        onMouseDown: function onMouseDown(e) {
          return _this4.handleMouseDown(e);
        },
        onMouseUp: function onMouseUp() {
          return _this4.handleMouseUp();
        }
      }), typeof this.state.currentStep !== "undefined" && this.renderThumb());
    }
  }]);

  return SliderComponent;
}(Component);

_defineProperty(SliderComponent, "propTypes", {
  initialValue: PropTypes.number.isRequired,
  minValue: PropTypes.number,
  maxValue: PropTypes.number,
  step: PropTypes.number,
  valueList: PropTypes.array,
  onMoveStart: PropTypes.func,
  onMoveEnd: PropTypes.func,
  onChange: PropTypes.func
});

SliderComponent.displayName = "Slider";
var Slider = withTheme(SliderComponent);
export { Slider };