@kiwicom/orbit-components/es/Slider/index.js

Orbit-components is a React component library which provides developers with the easiest possible way of building Kiwi.com’s products.

import * as React from "react";
import styled, { css, withTheme } from "styled-components";
import { warning } from "@adeira/js";
import transition from "../utils/transition";
import Text from "../Text";
import Heading from "../Heading";
import Stack from "../Stack";
import Hide from "../Hide";
import Handle from "./components/Handle";
import Bar from "./components/Bar";
import KEY_CODE_MAP from "../common/keyMaps";
import DEFAULT_VALUES from "./consts";
import Histogram from "./components/Histogram";
import defaultTheme from "../defaultTheme";
import mq from "../utils/mediaQuery";
import boundingClientRect from "../utils/boundingClientRect";
const StyledSlider = styled.div.withConfig({
  displayName: "Slider__StyledSlider",
  componentId: "sc-lemjaf-0"
})(["position:relative;"]); // $FlowFixMe: https://github.com/flow-typed/flow-typed/issues/3653#issuecomment-568539198

StyledSlider.defaultProps = {
  theme: defaultTheme
};
const StyledSliderContent = styled.div.withConfig({
  displayName: "Slider__StyledSliderContent",
  componentId: "sc-lemjaf-1"
})(["display:block;width:100%;box-sizing:border-box;padding-bottom:", ";", ";"], ({
  theme
}) => theme.orbit.spaceXSmall, mq.tablet(css(["width:calc(100% + 48px);position:absolute;bottom:-16px;left:-24px;right:-24px;opacity:0;visibility:hidden;padding:12px 24px 48px 24px;border-radius:", ";transition:", ";background:transparent;", ";"], ({
  theme
}) => theme.orbit.borderRadiusNormal, transition(["all"], "fast", "ease-in-out"), ({
  focused,
  theme
}) => focused && css(["visibility:visible;opacity:1;background:", ";box-shadow:", ";"], theme.orbit.paletteWhite, theme.orbit.boxShadowRaised)))); // $FlowFixMe: https://github.com/flow-typed/flow-typed/issues/3653#issuecomment-568539198

StyledSliderContent.defaultProps = {
  theme: defaultTheme
};
const StyledSliderInput = styled.div.withConfig({
  displayName: "Slider__StyledSliderInput",
  componentId: "sc-lemjaf-2"
})(["display:flex;align-items:center;width:100%;height:24px;"]);
export class PureSlider extends React.PureComponent {
  constructor(...args) {
    super(...args);
    this.bar = /*#__PURE__*/React.createRef();
    this.state = {
      value: this.props.defaultValue || DEFAULT_VALUES.VALUE,
      handleIndex: null,
      focused: false
    };

    this.pauseEvent = event => {
      if (typeof event.stopPropagation === "function") {
        event.stopPropagation();
      }

      if (typeof event.preventDefault === "function" && (typeof event.cancelable !== "boolean" || event.cancelable)) {
        event.preventDefault();
      }
    };

    this.stopPropagation = event => {
      if (typeof event.stopPropagation === "function") event.stopPropagation();
    };

    this.isNotEqual = (a, b) => {
      if (Array.isArray(a) && Array.isArray(b)) {
        return a.toString() !== b.toString();
      }

      return a !== b;
    };

    this.calculateValue = (ratio, addition, deduction) => {
      const {
        maxValue = DEFAULT_VALUES.MAX,
        minValue = DEFAULT_VALUES.MIN
      } = this.props;
      return Math.round((maxValue - minValue + (addition ? 1 : 0)) * ratio + minValue - (deduction ? 1 : 0));
    };

    this.calculateValueFromPosition = (pageX, throughClick) => {
      const barRect = boundingClientRect(this.bar);

      if (barRect) {
        const {
          histogramData,
          histogramLoading,
          theme: {
            rtl
          }
        } = this.props;
        const {
          handleIndex,
          value
        } = this.state;
        const mousePosition = (rtl ? barRect.right : pageX) - (rtl ? pageX : barRect.left);
        const positionRatio = mousePosition / barRect.width;
        const hasHistogram = histogramLoading || !!histogramData; // when range slider

        if (Array.isArray(value)) {
          if (value[0] === value[value.length - 1]) {
            if (this.calculateValue(positionRatio, true, true) >= value[value.length - 1]) {
              return this.calculateValue(positionRatio, true, true);
            }

            return this.calculateValue(positionRatio, true);
          }

          if (this.isNotEqual(this.sortArray(value), value)) {
            if (handleIndex === 0) {
              return this.calculateValue(positionRatio, true, true);
            }

            return this.calculateValue(positionRatio, true);
          }

          const closestKey = this.findClosestKey(this.calculateValue(positionRatio), this.sortArray(value)); // when first handle of range slider or when clicked and it should move the first handle

          if (handleIndex === 0 || throughClick && closestKey === 0) {
            return this.calculateValue(positionRatio, true);
          }
        } // simple slider without histogram


        if (handleIndex === null && !hasHistogram) {
          return this.calculateValue(positionRatio);
        }

        return this.calculateValue(positionRatio, true, true);
      }

      return null;
    };

    this.sortArray = arr => {
      if (Array.isArray(arr)) {
        return arr.slice().sort((a, b) => a - b);
      }

      return arr;
    };

    this.findClosestKey = (goal, value) => {
      return Array.isArray(value) ? value.reduce((acc, curr, index) => {
        return Array.isArray(value) && Math.abs(curr - goal) < Math.abs(value[acc] - goal) ? index : acc;
      }, 0) : null;
    };

    this.moveValueByStep = (step, forcedValue) => {
      const {
        value,
        handleIndex
      } = this.state;

      if (Array.isArray(value)) {
        return this.replaceValue(forcedValue || this.alignValue(value[Number(handleIndex)] + step), Number(handleIndex));
      }

      return forcedValue || this.alignValue(value + step);
    };

    this.handleKeyDown = event => {
      if (event.ctrlKey || event.shiftKey || event.altKey) return;
      const {
        step = DEFAULT_VALUES.STEP,
        minValue = DEFAULT_VALUES.MIN,
        maxValue = DEFAULT_VALUES.MAX,
        theme: {
          rtl
        }
      } = this.props;

      if (event.keyCode === KEY_CODE_MAP.ARROW_UP) {
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChange, this.moveValueByStep(step));
      }

      if (event.keyCode === KEY_CODE_MAP.ARROW_DOWN) {
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChange, this.moveValueByStep(-step));
      }

      if (event.keyCode === KEY_CODE_MAP.ARROW_RIGHT) {
        const switchStep = rtl ? -step : step;
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChange, this.moveValueByStep(switchStep));
      }

      if (event.keyCode === KEY_CODE_MAP.ARROW_LEFT) {
        const switchStep = rtl ? step : -step;
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChange, this.moveValueByStep(switchStep));
      }

      if (event.keyCode === KEY_CODE_MAP.HOME) {
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChange, this.moveValueByStep(0, minValue));
      }

      if (event.keyCode === KEY_CODE_MAP.END) {
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChange, this.moveValueByStep(0, maxValue));
      }
    };

    this.handleBlur = () => {
      this.setState({
        focused: false
      });
      const {
        value
      } = this.state;
      window.removeEventListener("keydown", this.handleKeyDown);
      window.removeEventListener("focusout", this.handleBlur);
      this.injectCallbackAndSetState(this.props.onChangeAfter, value, true);
    };

    this.handleOnFocus = i => event => {
      if (typeof i === "number") this.setState({
        handleIndex: i
      });
      const {
        value
      } = this.state;
      this.setState({
        focused: true
      });
      this.pauseEvent(event);
      window.addEventListener("keydown", this.handleKeyDown);
      window.addEventListener("focusout", this.handleBlur);
      this.injectCallbackAndSetState(this.props.onChangeBefore, value, true);
    };

    this.handleMove = newValue => {
      const {
        value,
        handleIndex
      } = this.state;

      if (newValue != null) {
        if (Array.isArray(value)) {
          return this.replaceValue(this.alignValue(newValue), Number(handleIndex));
        }

        return this.alignValue(newValue);
      }

      return null;
    };

    this.handleBarMouseDown = event => {
      const {
        value
      } = this.state;
      this.setState({
        handleIndex: null
      });
      const newValue = this.calculateValueFromPosition(event.pageX, true);

      if (newValue) {
        if (Array.isArray(value)) {
          const index = this.findClosestKey(newValue, value);
          const replacedValue = this.replaceValue(this.alignValue(newValue), index);
          this.injectCallbackAndSetState(this.props.onChangeBefore, value, true);
          this.injectCallbackAndSetState(this.props.onChange, replacedValue);
          this.injectCallbackAndSetState(this.props.onChangeAfter, replacedValue);
        } else {
          const alignedValue = this.alignValue(newValue);
          this.injectCallbackAndSetState(this.props.onChangeBefore, value, true);
          this.injectCallbackAndSetState(this.props.onChange, alignedValue);
          this.injectCallbackAndSetState(this.props.onChangeAfter, alignedValue);
        }
      }
    };

    this.injectCallbackAndSetState = (callback, newValue, forced = false) => {
      const {
        value
      } = this.state;

      if (newValue != null) {
        if (this.isNotEqual(newValue, value) || forced) {
          this.setState({
            value: newValue
          });

          if (callback) {
            callback(this.sortArray(newValue));
          }
        }
      }
    };

    this.handleMouseMove = event => {
      const newValue = this.calculateValueFromPosition(event.pageX);
      this.pauseEvent(event);
      this.injectCallbackAndSetState(this.props.onChange, this.handleMove(newValue));
    };

    this.handleMouseUp = () => {
      const {
        value
      } = this.state;
      this.setState({
        focused: false
      });
      window.removeEventListener("mousemove", this.handleMouseMove);
      window.removeEventListener("mouseup", this.handleMouseUp);
      this.injectCallbackAndSetState(this.props.onChangeAfter, value, true);
    };

    this.handleMouseDown = i => event => {
      // just allow left-click
      if (event.button === 0 && event.buttons !== 2) {
        const {
          value
        } = this.state;
        this.setState({
          focused: true
        });
        if (typeof i === "number") this.setState({
          handleIndex: i
        });
        window.addEventListener("mousemove", this.handleMouseMove);
        window.addEventListener("mouseup", this.handleMouseUp);
        this.pauseEvent(event);
        this.injectCallbackAndSetState(this.props.onChangeBefore, value, true);
      }
    };

    this.handleOnTouchMove = event => {
      if (event.touches.length > 1) return;
      const newValue = this.calculateValueFromPosition(event.touches[0].pageX);
      this.pauseEvent(event);
      this.injectCallbackAndSetState(this.props.onChange, this.handleMove(newValue));
    };

    this.handleTouchEnd = () => {
      const {
        value
      } = this.state;
      this.setState({
        focused: false
      });
      window.removeEventListener("touchmove", this.handleOnTouchMove);
      window.removeEventListener("touchend", this.handleTouchEnd);
      this.injectCallbackAndSetState(this.props.onChangeAfter, value, true);
    };

    this.handleOnTouchStart = i => event => {
      if (event.touches.length <= 1) {
        this.setState({
          focused: true
        });
        const {
          value
        } = this.state;
        if (typeof i === "number") this.setState({
          handleIndex: i
        });
        window.addEventListener("touchmove", this.handleOnTouchMove, {
          passive: false
        });
        window.addEventListener("touchend", this.handleTouchEnd);
        this.stopPropagation(event);
        this.injectCallbackAndSetState(this.props.onChangeBefore, value, true);
      }
    };

    this.alignValueToStep = value => {
      const {
        step = DEFAULT_VALUES.STEP
      } = this.props;
      if (step === 1) return value;
      const gap = value % step;
      if (gap === 0) return value;

      if (gap * 2 >= step) {
        return value - gap + step;
      }

      return value - gap;
    };

    this.alignValueToMaxMin = value => {
      const {
        maxValue = DEFAULT_VALUES.MAX,
        minValue = DEFAULT_VALUES.MIN
      } = this.props;

      if (value > maxValue) {
        return maxValue;
      }

      if (value < minValue) {
        return minValue;
      }

      return value;
    };

    this.alignValue = value => this.alignValueToMaxMin(this.alignValueToStep(value));

    this.replaceValue = (newValue, index) => {
      const {
        value
      } = this.state;
      if (index == null || !Array.isArray(value)) return newValue;
      return value.map((item, key) => key === index ? newValue : item);
    };

    this.renderHandle = (valueNow, i) => {
      const {
        minValue = DEFAULT_VALUES.MIN,
        maxValue = DEFAULT_VALUES.MAX,
        histogramData,
        histogramLoading,
        ariaValueText,
        ariaLabel
      } = this.props;
      const {
        handleIndex,
        value
      } = this.state;
      const key = i && encodeURIComponent(i.toString());
      const index = i || 0;
      return /*#__PURE__*/React.createElement(Handle, {
        tabIndex: "0",
        onTop: handleIndex === i,
        valueMax: maxValue,
        valueMin: minValue,
        onMouseDown: this.handleMouseDown(i),
        onFocus: this.handleOnFocus(i),
        onTouchStart: this.handleOnTouchStart(i),
        value: value,
        ariaValueText: ariaValueText,
        ariaLabel: ariaLabel,
        hasHistogram: histogramLoading || !!histogramData,
        index: index,
        key: key,
        dataTest: `SliderHandle-${index}`
      });
    };

    this.renderHandles = () => {
      const {
        value
      } = this.state;
      return Array.isArray(value) ? value.map((valueNow, i) => this.renderHandle(valueNow, i)) : this.renderHandle(value);
    };

    this.renderSliderTexts = biggerSpace => {
      const {
        label,
        valueDescription,
        histogramDescription
      } = this.props;
      if (!(label || valueDescription || histogramDescription)) return null;
      return /*#__PURE__*/React.createElement(Stack, {
        direction: "row",
        spacing: "none",
        spaceAfter: biggerSpace ? "medium" : "small"
      }, (label || histogramDescription) && /*#__PURE__*/React.createElement(Stack, {
        direction: "column",
        spacing: "none",
        basis: "60%",
        grow: true
      }, label && /*#__PURE__*/React.createElement(Heading, {
        type: "title4"
      }, label), valueDescription && /*#__PURE__*/React.createElement(Text, {
        type: "secondary",
        size: "small"
      }, valueDescription)), histogramDescription && /*#__PURE__*/React.createElement(Stack, {
        shrink: true,
        justify: "end",
        grow: false
      }, /*#__PURE__*/React.createElement(Text, {
        type: "primary",
        size: "small"
      }, histogramDescription)));
    };

    this.renderHeading = hasHistogram => {
      if (hasHistogram) {
        return /*#__PURE__*/React.createElement(Hide, {
          on: ["smallMobile", "mediumMobile", "largeMobile"],
          block: true
        }, this.renderSliderTexts(true));
      }

      return this.renderSliderTexts(true);
    };
  }

  componentDidUpdate(prevProps) {
    const {
      defaultValue = DEFAULT_VALUES.VALUE
    } = this.props;
    const {
      defaultValue: prevDefaultValue = DEFAULT_VALUES.VALUE
    } = prevProps;

    if (this.isNotEqual(prevDefaultValue, defaultValue)) {
      const newValue = Array.isArray(defaultValue) ? defaultValue.map(item => Number(item)) : Number(defaultValue); // eslint-disable-next-line react/no-did-update-set-state

      this.setState({
        value: newValue
      });
    }
  }

  render() {
    const {
      minValue = DEFAULT_VALUES.MIN,
      maxValue = DEFAULT_VALUES.MAX,
      histogramData,
      histogramLoading = false,
      histogramLoadingText,
      dataTest,
      step = DEFAULT_VALUES.STEP
    } = this.props;

    if (histogramData) {
      const properHistogramLength = (maxValue - minValue + step) / step;
      process.env.NODE_ENV !== "production" ? warning(histogramData.length === properHistogramLength, `Warning: Length of histogramData array is ${histogramData.length}, but should be ${properHistogramLength}. This will cause broken visuals of the whole Histogram.`) : void 0;
    }

    const {
      value,
      focused
    } = this.state;
    const sortedValue = this.sortArray(value);
    const hasHistogram = histogramLoading || !!histogramData;
    return /*#__PURE__*/React.createElement(StyledSlider, {
      "data-test": dataTest
    }, this.renderHeading(hasHistogram), hasHistogram && /*#__PURE__*/React.createElement(StyledSliderContent, {
      focused: focused
    }, this.renderSliderTexts(false), /*#__PURE__*/React.createElement(Histogram, {
      data: histogramData,
      value: sortedValue,
      min: minValue,
      step: step,
      loading: histogramLoading,
      loadingText: histogramLoadingText
    })), /*#__PURE__*/React.createElement(StyledSliderInput, null, /*#__PURE__*/React.createElement(Bar, {
      ref: this.bar,
      onMouseDown: this.handleBarMouseDown,
      value: sortedValue,
      max: maxValue,
      min: minValue,
      hasHistogram: hasHistogram
    }), this.renderHandles()));
  }

}
PureSlider.defaultProps = {
  theme: defaultTheme
};
const ThemedSlider = withTheme(PureSlider);
ThemedSlider.displayName = "Slider";
export default ThemedSlider;