react-ios-switch/lib/Switch.js

React switch component

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends = Object.assign || 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; };

var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _popmotion = require('popmotion');

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _normalizeColor = require('./normalizeColor');

var _normalizeColor2 = _interopRequireDefault(_normalizeColor);

var _prefixStyle = require('./prefixStyle');

var _prefixStyle2 = _interopRequireDefault(_prefixStyle);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

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

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

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

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

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

    _this.state = {
      isDragging: false,
      offset: null
    };

    _this.handleChange = _this.handleChange.bind(_this);
    _this.handleClick = _this.handleClick.bind(_this);
    _this.handleHandleClick = _this.handleHandleClick.bind(_this);
    _this.handleMouseDown = _this.handleMouseDown.bind(_this);
    _this.handleMouseUp = _this.handleMouseUp.bind(_this);
    _this.setRef = _this.setRef.bind(_this);
    return _this;
  }

  _createClass(Switch, [{
    key: 'clickChange',
    value: function clickChange(checked) {
      if (this.ref.parentNode && this.ref.parentNode.tagName.toLowerCase() === 'label') {
        // if the parent is a label, we don't need to emit the change event ourselves
        return;
      }

      this.props.onChange(checked);
    }
  }, {
    key: 'componentDidMount',
    value: function componentDidMount() {
      window.addEventListener('mouseup', this.handleMouseUp);
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      window.removeEventListener('mouseup', this.handleMouseUp);
    }
  }, {
    key: 'getHandleColor',
    value: function getHandleColor() {
      return (0, _normalizeColor2.default)(this.props.handleColor);
    }
  }, {
    key: 'getHandleCursor',
    value: function getHandleCursor() {
      if (this.isDisabled()) {
        return 'default';
      }

      return this.state.isDragging ? 'grabbing' : 'grab';
    }
  }, {
    key: 'getHandleLength',
    value: function getHandleLength() {
      return this.getHeight() - 2;
    }
  }, {
    key: 'getHeight',
    value: function getHeight() {
      return 30;
    }
  }, {
    key: 'getOffColor',
    value: function getOffColor() {
      return (0, _normalizeColor2.default)(this.props.offColor);
    }
  }, {
    key: 'getOffset',
    value: function getOffset() {
      if (this.state.isDragging) {
        return this.state.offset;
      }

      return this.props.checked ? this.getOffsetWidth() : 0;
    }
  }, {
    key: 'getOffsetProgress',
    value: function getOffsetProgress() {
      return this.getOffset() / this.getOffsetWidth();
    }
  }, {
    key: 'getOffsetWidth',
    value: function getOffsetWidth(props) {
      return this.getWidth() - this.getHandleLength() - 2;
    }
  }, {
    key: 'getOnColor',
    value: function getOnColor() {
      return (0, _normalizeColor2.default)(this.props.onColor);
    }
  }, {
    key: 'getPendingColor',
    value: function getPendingColor(_ref) {
      var color = _ref.color,
          pendingColor = _ref.pendingColor;

      if (!pendingColor) {
        return color === 'white' ?
        // default pending color for white color
        '#dfdfdf' : (0, _normalizeColor2.default)(color);
      }

      return (0, _normalizeColor2.default)(pendingColor);
    }
  }, {
    key: 'getPendingOffColor',
    value: function getPendingOffColor() {
      return this.getPendingColor({
        color: this.props.offColor,
        pendingColor: this.props.pendingOffColor
      });
    }
  }, {
    key: 'getPendingOnColor',
    value: function getPendingOnColor() {
      return this.getPendingColor({
        color: this.props.onColor,
        pendingColor: this.props.pendingOnColor
      });
    }
  }, {
    key: 'getWidth',
    value: function getWidth() {
      return 50;
    }
  }, {
    key: 'handleChange',
    value: function handleChange(e) {
      this.props.onChange(e.target.checked);
    }
  }, {
    key: 'handleClick',
    value: function handleClick(e) {
      if (this.isDisabled()) {
        return;
      }

      // handle case when the switch is clicked
      this.clickChange(!this.props.checked);
    }
  }, {
    key: 'handleHandleClick',
    value: function handleHandleClick(e) {
      e.stopPropagation();
    }
  }, {
    key: 'handleMouseDown',
    value: function handleMouseDown(e) {
      var _this2 = this;

      if (this.isDisabled()) {
        return;
      }

      this.pointerTracker = (0, _popmotion.pointer)(e).start();

      this.offsetTracker = (0, _popmotion.trackOffset)(this.pointerTracker.x, {
        from: this.getOffset(),
        onUpdate: _popmotion.transform.pipe(_popmotion.transform.clamp(0, this.getOffsetWidth()), function (offset) {
          return _this2.setState({ offset: offset });
        })
      }).start();

      this.setState({
        isDragging: true,
        offset: this.getOffset()
      });
    }
  }, {
    key: 'handleMouseUp',
    value: function handleMouseUp() {
      if (!this.state.isDragging) {
        return;
      }

      this.pointerTracker.stop();
      this.offsetTracker.stop();

      var prevOffset = this.props.checked ? this.getOffsetWidth() : 0;
      var checked = this.state.offset === prevOffset ?
      // handle case when the handle is clicked
      !this.props.checked :
      // handle case when the handle is dragged
      this.getOffsetProgress() >= 0.5;

      this.setState({
        isDragging: false,
        offset: null
      });

      this.clickChange(checked);
    }
  }, {
    key: 'isDisabled',
    value: function isDisabled() {
      return this.props.disabled || this.props.readOnly;
    }
  }, {
    key: 'render',
    value: function render() {
      var _props = this.props,
          checked = _props.checked,
          className = _props.className,
          disabled = _props.disabled,
          name = _props.name,
          onChange = _props.onChange,
          readOnly = _props.readOnly,
          style = _props.style;
      var isDragging = this.state.isDragging;


      var color = _popmotion.transform.pipe(_popmotion.easing.createExpoIn(2), _popmotion.transform.blendColor(this.getOffColor(), this.getOnColor()), _popmotion.transform.rgba)(this.getOffsetProgress());

      var borderColor = _popmotion.transform.pipe(_popmotion.easing.createExpoIn(1), _popmotion.transform.blendColor(this.getPendingOffColor(), this.getPendingOnColor()), _popmotion.transform.rgba)(this.getOffsetProgress());

      return _react2.default.createElement(
        'span',
        {
          className: className,
          onClick: this.handleClick,
          ref: this.setRef,
          style: _extends({}, (0, _prefixStyle2.default)({
            backgroundColor: color,
            border: '1px solid ' + borderColor,
            borderRadius: this.getHeight() / 2,
            boxShadow: 'inset 0 0 0 ' + this.getOffset() + 'px ' + borderColor,
            boxSizing: 'border-box',
            display: 'inline-block',
            height: this.getHeight(),
            opacity: this.isDisabled() ? 0.5 : 1,
            position: 'relative',
            transition: isDragging ? null : '0.2s',
            userSelect: 'none',
            width: this.getWidth()
          }), style)
        },
        _react2.default.createElement('span', {
          onClick: this.handleHandleClick,
          onMouseDown: this.handleMouseDown,
          style: (0, _prefixStyle2.default)({
            backgroundColor: this.getHandleColor(),
            borderRadius: '100%',
            boxShadow: '0 1px 3px rgba(0, 0, 0, 0.4)',
            cursor: this.getHandleCursor(),
            display: 'inline-block',
            height: this.getHandleLength(),
            left: this.getOffset(),
            position: 'absolute',
            top: 0,
            transition: isDragging ? null : '0.2s',
            width: this.getHandleLength()
          })
        }),
        _react2.default.createElement('input', {
          checked: checked,
          disabled: disabled,
          name: name,
          onChange: this.handleChange,
          readOnly: readOnly,
          style: {
            display: 'none'
          },
          type: 'checkbox'
        })
      );
    }
  }, {
    key: 'setRef',
    value: function setRef(ref) {
      this.ref = ref;
    }
  }]);

  return Switch;
}(_react2.default.Component);

Switch.propTypes = {
  checked: _propTypes2.default.bool,
  className: _propTypes2.default.string,
  disabled: _propTypes2.default.bool,
  handleColor: _propTypes2.default.string,
  name: _propTypes2.default.string,
  offColor: _propTypes2.default.string,
  onChange: _propTypes2.default.func,
  onColor: _propTypes2.default.string,
  pendingOffColor: _propTypes2.default.string,
  pendingOnColor: _propTypes2.default.string,
  readOnly: _propTypes2.default.bool,
  style: _propTypes2.default.object
};
Switch.defaultProps = {
  handleColor: 'white',
  offColor: 'white',
  onChange: function onChange() {},
  onColor: 'rgb(76, 217, 100)'
};
exports.default = Switch;