rc-slider/es/Slider.js

Slider UI component 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';
/* eslint-disable react/prop-types */
import React from 'react';
import PropTypes from 'prop-types';
import warning from 'warning';
import Track from './common/Track';
import createSlider from './common/createSlider';
import * as utils from './utils';

var Slider = function (_React$Component) {
  _inherits(Slider, _React$Component);

  function Slider(props) {
    _classCallCheck(this, Slider);

    var _this = _possibleConstructorReturn(this, (Slider.__proto__ || Object.getPrototypeOf(Slider)).call(this, props));

    _this.onEnd = function () {
      _this.setState({ dragging: false });
      _this.removeDocumentEvents();
      _this.props.onAfterChange(_this.getValue());
    };

    var defaultValue = props.defaultValue !== undefined ? props.defaultValue : props.min;
    var value = props.value !== undefined ? props.value : defaultValue;

    _this.state = {
      value: _this.trimAlignValue(value),
      dragging: false
    };
    if (process.env.NODE_ENV !== 'production') {
      warning(!('minimumTrackStyle' in props), 'minimumTrackStyle will be deprecate, please use trackStyle instead.');
      warning(!('maximumTrackStyle' in props), 'maximumTrackStyle will be deprecate, please use railStyle instead.');
    }
    return _this;
  }

  _createClass(Slider, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      var _props = this.props,
          autoFocus = _props.autoFocus,
          disabled = _props.disabled;

      if (autoFocus && !disabled) {
        this.focus();
      }
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      if (!('value' in nextProps || 'min' in nextProps || 'max' in nextProps)) return;

      var prevValue = this.state.value;
      var value = nextProps.value !== undefined ? nextProps.value : prevValue;
      var nextValue = this.trimAlignValue(value, nextProps);
      if (nextValue === prevValue) return;

      this.setState({ value: nextValue });
      if (utils.isValueOutOfRange(value, nextProps)) {
        this.props.onChange(nextValue);
      }
    }
  }, {
    key: 'onChange',
    value: function onChange(state) {
      var props = this.props;
      var isNotControlled = !('value' in props);
      if (isNotControlled) {
        this.setState(state);
      }

      var changedValue = state.value;
      props.onChange(changedValue);
    }
  }, {
    key: 'onStart',
    value: function onStart(position) {
      this.setState({ dragging: true });
      var props = this.props;
      var prevValue = this.getValue();
      props.onBeforeChange(prevValue);

      var value = this.calcValueByPos(position);
      this.startValue = value;
      this.startPosition = position;

      if (value === prevValue) return;

      this.prevMovedHandleIndex = 0;

      this.onChange({ value: value });
    }
  }, {
    key: 'onMove',
    value: function onMove(e, position) {
      utils.pauseEvent(e);
      var oldValue = this.state.value;

      var value = this.calcValueByPos(position);
      if (value === oldValue) return;

      this.onChange({ value: value });
    }
  }, {
    key: 'onKeyboard',
    value: function onKeyboard(e) {
      var valueMutator = utils.getKeyboardValueMutator(e);

      if (valueMutator) {
        utils.pauseEvent(e);
        var state = this.state;
        var oldValue = state.value;
        var mutatedValue = valueMutator(oldValue, this.props);
        var value = this.trimAlignValue(mutatedValue);
        if (value === oldValue) return;

        this.onChange({ value: value });
      }
    }
  }, {
    key: 'getValue',
    value: function getValue() {
      return this.state.value;
    }
  }, {
    key: 'getLowerBound',
    value: function getLowerBound() {
      return this.props.min;
    }
  }, {
    key: 'getUpperBound',
    value: function getUpperBound() {
      return this.state.value;
    }
  }, {
    key: 'trimAlignValue',
    value: function trimAlignValue(v) {
      var nextProps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

      var mergedProps = _extends({}, this.props, nextProps);
      var val = utils.ensureValueInRange(v, mergedProps);
      return utils.ensureValuePrecision(val, mergedProps);
    }
  }, {
    key: 'render',
    value: function render() {
      var _this2 = this;

      var _props2 = this.props,
          prefixCls = _props2.prefixCls,
          vertical = _props2.vertical,
          included = _props2.included,
          disabled = _props2.disabled,
          minimumTrackStyle = _props2.minimumTrackStyle,
          trackStyle = _props2.trackStyle,
          handleStyle = _props2.handleStyle,
          tabIndex = _props2.tabIndex,
          min = _props2.min,
          max = _props2.max,
          handleGenerator = _props2.handle;
      var _state = this.state,
          value = _state.value,
          dragging = _state.dragging;

      var offset = this.calcOffset(value);
      var handle = handleGenerator({
        className: prefixCls + '-handle',
        prefixCls: prefixCls,
        vertical: vertical,
        offset: offset,
        value: value,
        dragging: dragging,
        disabled: disabled,
        min: min,
        max: max,
        index: 0,
        tabIndex: tabIndex,
        style: handleStyle[0] || handleStyle,
        ref: function ref(h) {
          return _this2.saveHandle(0, h);
        }
      });

      var _trackStyle = trackStyle[0] || trackStyle;
      var track = React.createElement(Track, {
        className: prefixCls + '-track',
        vertical: vertical,
        included: included,
        offset: 0,
        length: offset,
        style: _extends({}, minimumTrackStyle, _trackStyle)
      });

      return { tracks: track, handles: handle };
    }
  }]);

  return Slider;
}(React.Component);

Slider.propTypes = {
  defaultValue: PropTypes.number,
  value: PropTypes.number,
  disabled: PropTypes.bool,
  autoFocus: PropTypes.bool,
  tabIndex: PropTypes.number
};


export default createSlider(Slider);