@yncoder/element-react/dist/npm/es6/src/slider/Slider.js

Element UI for React

import _extends from 'babel-runtime/helpers/extends';
import _classCallCheck from 'babel-runtime/helpers/classCallCheck';
import _createClass from 'babel-runtime/helpers/createClass';
import _possibleConstructorReturn from 'babel-runtime/helpers/possibleConstructorReturn';
import _inherits from 'babel-runtime/helpers/inherits';
import * as React from 'react';
import { Component, PropTypes } from '../../libs';

import InputNumber from '../input-number';
import SliderButton from './Button';

var Slider = function (_Component) {
  _inherits(Slider, _Component);

  function Slider() {
    var _temp, _this, _ret;

    _classCallCheck(this, Slider);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = _possibleConstructorReturn(this, _Component.call.apply(_Component, [this].concat(args))), _this), _this.state = {
      firstValue: 0,
      secondValue: 0,
      draggingValue: _this.props.value,
      precision: 0,
      inputValue: 0
    }, _this.slider = React.createRef(), _this.button1 = React.createRef(), _this.button2 = React.createRef(), _temp), _possibleConstructorReturn(_this, _ret);
  }

  Slider.getDerivedStateFromProps = function getDerivedStateFromProps(props, state) {
    var range = props.range,
        value = props.value,
        min = props.min,
        max = props.max,
        step = props.step;


    var nextValue = state.draggingValue;

    if (range) {
      if (Array.isArray(nextValue)) {
        state.firstValue = Math.max(min, nextValue[0]);
        state.secondValue = Math.min(max, nextValue[1]);
      } else {
        state.firstValue = min;
        state.secondValue = max;
      }

      state.draggingValue = [state.firstValue, state.secondValue];
    } else {
      state.firstValue = Slider.getInitValue(nextValue, props);
      state.draggingValue = state.firstValue;
    }

    var precisions = [min, max, step].map(function (item) {
      var decimal = ('' + item).split('.')[1];
      return decimal ? decimal.length : 0;
    });

    state.precision = Math.max.apply(null, precisions);
    state.inputValue = state.inputValue || state.firstValue;

    return state;
  };

  Slider.getInitValue = function getInitValue(value, _ref) {
    var min = _ref.min,
        max = _ref.max;

    var initValue = value;
    if (typeof value !== 'number' || isNaN(value)) {
      initValue = min;
    } else {
      initValue = Math.min(max, Math.max(min, value));
    }
    return initValue;
  };

  Slider.prototype.getChildContext = function getChildContext() {
    return {
      component: this
    };
  };

  Slider.prototype.setValues = function setValues(state) {
    var _props = this.props,
        range = _props.range,
        min = _props.min,
        max = _props.max,
        _props$triggerOnDragg = _props.triggerOnDragging,
        triggerOnDragging = _props$triggerOnDragg === undefined ? false : _props$triggerOnDragg,
        onChange = _props.onChange;

    var states = _extends({}, this.state, state);
    var firstValue = states.firstValue,
        secondValue = states.secondValue;
    var inputValue = states.inputValue;

    var changes = void 0;

    if (range) {
      if (secondValue < min) {
        changes = [min, min];
      } else if (firstValue > max) {
        changes = [max, max];
      } else if (firstValue < min) {
        changes = [min, secondValue];
      } else if (secondValue > max) {
        changes = [firstValue, max];
      } else {
        changes = [Math.min(firstValue, secondValue), Math.max(firstValue, secondValue)];
      }
    } else if (typeof firstValue === 'number' && !isNaN(firstValue)) {
      var initValue = Slider.getInitValue(firstValue, this.props);
      if (initValue < min) {
        changes = min;
      } else if (initValue > max) {
        changes = max;
      } else {
        changes = firstValue;
        inputValue = changes;
      }
    }

    this.setState({ firstValue: firstValue, secondValue: secondValue, inputValue: inputValue, draggingValue: changes });

    if (typeof changes !== 'undefined' && onChange && !(Number(triggerOnDragging) ^ Number(this.dragging))) {
      onChange(changes);
    }
  };

  Slider.prototype.setPosition = function setPosition(percent) {
    var _props2 = this.props,
        range = _props2.range,
        min = _props2.min,
        max = _props2.max;
    var _state = this.state,
        firstValue = _state.firstValue,
        secondValue = _state.secondValue;


    var targetValue = min + percent * (max - min) / 100;

    if (!range) {
      this.button1 && this.button1.current.setPosition(percent);
      return;
    }

    var button = void 0;

    if (Math.abs(Math.min(firstValue, secondValue) - targetValue) < Math.abs(Math.max(firstValue, secondValue) - targetValue)) {
      button = firstValue < secondValue ? 'button1' : 'button2';
    } else {
      button = firstValue > secondValue ? 'button1' : 'button2';
    }

    this[button] && this[button].current.setPosition(percent);
  };

  Slider.prototype.onSliderClick = function onSliderClick(event) {
    var _props3 = this.props,
        disabled = _props3.disabled,
        vertical = _props3.vertical;

    if (disabled || this.dragging || !this.slider.current) return;

    if (vertical) {
      var sliderOffsetBottom = this.slider.current.getBoundingClientRect().bottom;
      this.setPosition((sliderOffsetBottom - event.clientY) / this.sliderSize() * 100);
    } else {
      var sliderOffsetLeft = this.slider.current.getBoundingClientRect().left;
      this.setPosition((event.clientX - sliderOffsetLeft) / this.sliderSize() * 100);
    }

    this.setValues(this.state);
  };

  Slider.prototype.onInputValueChanged = function onInputValueChanged(value) {
    this.setValues({
      inputValue: value || 0,
      firstValue: value || 0
    });
  };

  /* Computed Methods */

  Slider.prototype.sliderSize = function sliderSize() {
    var vertical = this.props.vertical;

    if (!this.slider.current) return 0;
    return parseInt(vertical ? this.slider.current.offsetHeight : this.slider.current.offsetWidth, 10);
  };

  Slider.prototype.stops = function stops() {
    var _props4 = this.props,
        range = _props4.range,
        min = _props4.min,
        max = _props4.max,
        step = _props4.step;
    var _state2 = this.state,
        firstValue = _state2.firstValue,
        secondValue = _state2.secondValue;


    var stopCount = (max - min) / step;
    var stepWidth = 100 * step / (max - min);
    var result = [];

    for (var i = 1; i < stopCount; i++) {
      result.push(i * stepWidth);
    }

    if (range) {
      return result.filter(function (step) {
        return step < 100 * (Math.min(firstValue, secondValue) - min) / (max - min) || step > 100 * (Math.max(firstValue, secondValue) - min) / (max - min);
      });
    } else {
      return result.filter(function (step) {
        return step > 100 * (firstValue - min) / (max - min);
      });
    }
  };

  Slider.prototype.runwayStyle = function runwayStyle() {
    var _props5 = this.props,
        vertical = _props5.vertical,
        height = _props5.height;

    return vertical ? { height: height } : {};
  };

  Slider.prototype.barStyle = function barStyle() {
    var vertical = this.props.vertical;

    return vertical ? {
      height: this.barSize(),
      bottom: this.barStart()
    } : {
      width: this.barSize(),
      left: this.barStart()
    };
  };

  Slider.prototype.barSize = function barSize() {
    var _state3 = this.state,
        firstValue = _state3.firstValue,
        secondValue = _state3.secondValue;
    var _props6 = this.props,
        range = _props6.range,
        max = _props6.max,
        min = _props6.min;

    return range ? 100 * (Math.max(firstValue, secondValue) - Math.min(firstValue, secondValue)) / (max - min) + '%' : 100 * (firstValue - min) / (max - min) + '%';
  };

  Slider.prototype.barStart = function barStart() {
    var _state4 = this.state,
        firstValue = _state4.firstValue,
        secondValue = _state4.secondValue;
    var _props7 = this.props,
        range = _props7.range,
        max = _props7.max,
        min = _props7.min;

    return range ? 100 * (Math.min(firstValue, secondValue) - min) / (max - min) + '%' : '0%';
  };

  Slider.prototype.render = function render() {
    var _this2 = this;

    var _props8 = this.props,
        vertical = _props8.vertical,
        showInput = _props8.showInput,
        showStops = _props8.showStops,
        showInputControls = _props8.showInputControls,
        range = _props8.range,
        step = _props8.step,
        disabled = _props8.disabled,
        min = _props8.min,
        max = _props8.max;
    var _state5 = this.state,
        inputValue = _state5.inputValue,
        firstValue = _state5.firstValue,
        secondValue = _state5.secondValue;


    return React.createElement(
      'div',
      { className: this.className('el-slider', {
          'is-vertical': vertical,
          'el-slider--with-input': showInput
        }) },
      showInput && !range && React.createElement(InputNumber, {
        ref: 'input',
        className: 'el-slider__input',
        defaultValue: inputValue,
        value: firstValue,
        step: step,
        disabled: disabled,
        controls: showInputControls,
        min: min,
        max: max,
        size: 'small',
        onChange: this.onInputValueChanged.bind(this)
      }),
      React.createElement(
        'div',
        {
          ref: this.slider,
          style: this.runwayStyle(),
          className: this.classNames('el-slider__runway', {
            'show-input': showInput,
            'disabled': disabled
          }),
          onClick: this.onSliderClick.bind(this)
        },
        React.createElement('div', {
          className: 'el-slider__bar',
          style: this.barStyle() }),
        React.createElement(SliderButton, {
          ref: this.button1,
          vertical: vertical, value: firstValue,
          onChange: function onChange(v) {
            return _this2.setValues({ firstValue: v });
          }
        }),
        range && React.createElement(SliderButton, {
          ref: this.button2,
          vertical: vertical, value: secondValue,
          onChange: function onChange(v) {
            return _this2.setValues({ secondValue: v });
          }
        }),
        showStops && this.stops().map(function (item, index) {
          return React.createElement('div', {
            key: index,
            className: 'el-slider__stop',
            style: vertical ? { 'bottom': item + '%' } : { 'left': item + '%' }
          });
        })
      )
    );
  };

  _createClass(Slider, [{
    key: 'dragging',
    get: function get() {
      return this.button1.current && this.button1.current.state.dragging || this.button2.current && this.button2.current.state.dragging;
    }
  }]);

  return Slider;
}(Component);

export default Slider;


Slider.childContextTypes = {
  component: PropTypes.any
};

Slider.propTypes = {
  min: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),
  max: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),
  step: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),
  value: PropTypes.oneOfType([PropTypes.number, PropTypes.arrayOf(PropTypes.number)]),
  showInput: PropTypes.bool,
  showInputControls: PropTypes.bool,
  showTooltip: PropTypes.bool,
  showStops: PropTypes.bool,
  disabled: PropTypes.bool,
  range: PropTypes.bool,
  vertical: PropTypes.bool,
  height: PropTypes.string,
  formatTooltip: PropTypes.func,
  onChange: PropTypes.func,
  triggerOnDragging: PropTypes.bool
};

Slider.defaultProps = {
  showTooltip: true,
  showInputControls: true,
  min: 0,
  max: 100,
  step: 1,
  value: 0,
  triggerOnDragging: false
};