@spotware/react-collapse/lib/Collapse.js

Component-wrapper for collapse animation with react-motion for elements with variable (and dynamic) height

'use strict';

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

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 _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _reactMotion = require('react-motion');

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

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

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; } /* eslint-disable react/no-did-update-set-state,react/no-did-mount-set-state */


var SPRING_PRECISION = 1;

var WAITING = 'WAITING';
var RESIZING = 'RESIZING';
var RESTING = 'RESTING';
var IDLING = 'IDLING';

var noop = function noop() {
  return null;
};
var css = {
  collapse: 'ReactCollapse--collapse',
  content: 'ReactCollapse--content'
};

function getContentHeightDefault(content, _wrapper) {
  return content.clientHeight;
}

var Collapse = exports.Collapse = function (_React$PureComponent) {
  _inherits(Collapse, _React$PureComponent);

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

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

    _initialiseProps.call(_this);

    _this.state = {
      currentState: IDLING,
      from: 0,
      to: 0,
      resizingFrom: 0
    };
    return _this;
  }

  _createClass(Collapse, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      var _props = this.props,
          isOpened = _props.isOpened,
          forceInitialAnimation = _props.forceInitialAnimation,
          onRest = _props.onRest;

      if (isOpened) {
        var to = this.getTo();
        if (forceInitialAnimation) {
          var from = this.wrapper.clientHeight;
          this.setState({ currentState: RESIZING, from: from, to: to });
        } else {
          this.setState({ currentState: IDLING, from: to, to: to });
        }
      }
      onRest();
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      var _state = this.state,
          currentState = _state.currentState,
          to = _state.to,
          resizingFrom = _state.resizingFrom;
      var _props2 = this.props,
          isOpened = _props2.isOpened,
          animateContentChanges = _props2.animateContentChanges;

      var openedChanged = nextProps.isOpened !== isOpened;

      if (currentState === RESIZING && openedChanged) {
        this.setState({ from: this.currentHeight, to: resizingFrom, resizingFrom: to });
      } else if (nextProps.hasNestedCollapse) {
        // For nested collapses we do not need to change to waiting state
        // and should keep `height:auto`
        // Because children will be animated and height will not jump anyway
        // See https://github.com/nkbt/react-collapse/issues/76 for more details
        if (openedChanged) {
          // Still go to WAITING state if own isOpened was changed
          this.setState({ currentState: WAITING });
        }
      } else if (currentState === IDLING) {
        if (openedChanged || isOpened && animateContentChanges) {
          this.setState({ currentState: WAITING });
        }
      }
    }
  }, {
    key: 'componentDidUpdate',
    value: function componentDidUpdate(prevProps, prevState) {
      var _props3 = this.props,
          isOpened = _props3.isOpened,
          onRest = _props3.onRest,
          onMeasure = _props3.onMeasure;
      var currentState = this.state.currentState;


      if (currentState === IDLING) {
        onRest();
        return;
      }

      if (prevState.to !== this.state.to) {
        onMeasure({ height: this.state.to, width: this.content.clientWidth });
      }

      if (currentState !== RESIZING) {
        var from = this.wrapper.clientHeight;
        var to = isOpened ? this.getTo() : 0;

        if (from !== to) {
          this.setState({
            currentState: RESIZING, from: from, to: to, resizingFrom: from
          });
          return;
        }

        if (currentState === RESTING || currentState === WAITING) {
          this.setState({ currentState: IDLING, from: from, to: to });
        }
      }
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      cancelAnimationFrame(this.raf);
    }
  }, {
    key: 'render',
    value: function render() {
      return _react2.default.createElement(
        _reactMotion.Motion,
        _extends({}, this.getMotionProps(), { onRest: this.onRest }),
        this.renderContent
      );
    }
  }]);

  return Collapse;
}(_react2.default.PureComponent);

Collapse.defaultProps = {
  springConfig: {},
  forceInitialAnimation: false,
  hasNestedCollapse: false,
  animateContentChanges: true,
  fixedHeight: -1,
  style: {},
  theme: css,
  onRender: noop,
  onRest: noop,
  onMeasure: noop,
  getContentHeight: getContentHeightDefault
};

var _initialiseProps = function _initialiseProps() {
  var _this2 = this;

  this.onContentRef = function (content) {
    _this2.content = content;
  };

  this.onWrapperRef = function (wrapper) {
    _this2.wrapper = wrapper;
  };

  this.onRest = function () {
    _this2.raf = requestAnimationFrame(_this2.setResting);
  };

  this.setResting = function () {
    _this2.currentHeight = undefined;
    _this2.setState({ currentState: RESTING, resizingFrom: undefined });
  };

  this.getTo = function () {
    var _props4 = _this2.props,
        fixedHeight = _props4.fixedHeight,
        getContentHeight = _props4.getContentHeight;

    return fixedHeight > -1 ? fixedHeight : getContentHeight(_this2.content, _this2.wrapper);
  };

  this.getWrapperStyle = function (height) {
    if (_this2.state.currentState === IDLING && _this2.state.to) {
      var fixedHeight = _this2.props.fixedHeight;

      if (fixedHeight > -1) {
        return { overflow: 'hidden', height: fixedHeight };
      }
      return { height: 'auto' };
    }

    if (_this2.state.currentState === WAITING && !_this2.state.to) {
      return { overflow: 'hidden', height: 0 };
    }

    return { overflow: 'hidden', height: Math.max(0, height) };
  };

  this.getMotionProps = function () {
    var springConfig = _this2.props.springConfig;


    return _this2.state.currentState === IDLING ? {
      // When completely stable, instantly jump to the position
      defaultStyle: { height: _this2.state.to },
      style: { height: _this2.state.to }
    } : {
      // Otherwise, animate
      defaultStyle: { height: _this2.state.from },
      style: { height: (0, _reactMotion.spring)(_this2.state.to, _extends({ precision: SPRING_PRECISION }, springConfig)) }
    };
  };

  this.renderContent = function (_ref) {
    var height = _ref.height;

    // eslint-disable-line
    var _props5 = _this2.props,
        _isOpened = _props5.isOpened,
        _springConfig = _props5.springConfig,
        _forceInitialAnimation = _props5.forceInitialAnimation,
        _animateContentChanges = _props5.animateContentChanges,
        _hasNestedCollapse = _props5.hasNestedCollapse,
        _fixedHeight = _props5.fixedHeight,
        theme = _props5.theme,
        style = _props5.style,
        onRender = _props5.onRender,
        _onRest = _props5.onRest,
        _onMeasure = _props5.onMeasure,
        _getContentHeight = _props5.getContentHeight,
        children = _props5.children,
        props = _objectWithoutProperties(_props5, ['isOpened', 'springConfig', 'forceInitialAnimation', 'animateContentChanges', 'hasNestedCollapse', 'fixedHeight', 'theme', 'style', 'onRender', 'onRest', 'onMeasure', 'getContentHeight', 'children']);

    var _state2 = _this2.state,
        from = _state2.from,
        to = _state2.to,
        currentState = _state2.currentState;


    if (currentState === RESIZING) {
      _this2.currentHeight = height;
    }
    // DANGEROUS, use with caution, never do setState with it
    onRender({ current: height, from: from, to: to });

    return _react2.default.createElement(
      'div',
      _extends({
        ref: _this2.onWrapperRef,
        className: theme.collapse,
        style: _extends({}, _this2.getWrapperStyle(Math.max(0, height)), style)
      }, props),
      _react2.default.createElement(
        'div',
        { ref: _this2.onContentRef, className: theme.content },
        children
      )
    );
  };
};