react-sticky-node/lib/StickyNode.react.js

Sticky react 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 _react = require('react');

var _react2 = _interopRequireDefault(_react);

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; }

// TODO Remove calculations from render. Add possibility to handle callbacks.
var StickyNode = function (_Component) {
  _inherits(StickyNode, _Component);

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

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

    _this.state = {};
    return _this;
  }

  _createClass(StickyNode, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      var restrictorNode = this.props.restrictorNode;

      if (restrictorNode) {
        this.adjustPosition(restrictorNode);
      }
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      this.cancelAdjustPosition();
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      var restrictorNode = nextProps.restrictorNode;

      this.cancelAdjustPosition();
      if (restrictorNode) {
        this.adjustPosition(restrictorNode);
      }
    }
  }, {
    key: 'adjustPosition',
    value: function adjustPosition(restrictorNode) {
      var _this2 = this;

      var rect = restrictorNode.getBoundingClientRect() || {};
      if (rect.width !== this.state.rectWidth) {
        this.setState({ rectWidth: rect.width });
      }
      if (rect.height !== this.state.rectHeight) {
        this.setState({ rectHeight: rect.height });
      }
      if (rect.left !== this.state.rectLeft) {
        this.setState({ rectLeft: rect.left });
      }
      if (rect.right !== this.state.rectRight) {
        this.setState({ rectRight: rect.right });
      }
      if (rect.top !== this.state.rectTop) {
        this.setState({ rectTop: rect.top });
      }
      if (rect.bottom !== this.state.rectBottom) {
        this.setState({ rectBottom: rect.bottom });
      }

      var ref = this._ref.getBoundingClientRect() || {};
      if (ref.width !== this.state.refWidth) {
        this.setState({ refWidth: ref.width });
      }
      if (ref.height !== this.state.refHeight) {
        this.setState({ refHeight: ref.height });
      }
      if (ref.left !== this.state.refLeft) {
        this.setState({ refLeft: ref.left });
      }
      if (ref.right !== this.state.refRight) {
        this.setState({ refRight: ref.right });
      }
      if (ref.top !== this.state.refTop) {
        this.setState({ refTop: ref.top });
      }
      if (ref.bottom !== this.state.refBottom) {
        this.setState({ refBottom: ref.bottom });
      }

      this._animationFrame = window.requestAnimationFrame(function () {
        return _this2.adjustPosition(restrictorNode);
      });
    }
  }, {
    key: 'cancelAdjustPosition',
    value: function cancelAdjustPosition() {
      if (this._animationFrame) {
        cancelAnimationFrame(this._animationFrame);
      }
    }
  }, {
    key: 'render',
    value: function render() {
      var _this3 = this;

      var _props = this.props,
          className = _props.className,
          style = _props.style,
          onMaxWidth = _props.onMaxWidth,
          onMaxHeight = _props.onMaxHeight,
          restrictorNode = _props.restrictorNode;
      var _state = this.state,
          rectWidth = _state.rectWidth,
          rectHeight = _state.rectHeight,
          rectLeft = _state.rectLeft,
          rectRight = _state.rectRight,
          rectTop = _state.rectTop,
          rectBottom = _state.rectBottom,
          refWidth = _state.refWidth,
          refHeight = _state.refHeight,
          refLeft = _state.refLeft,
          refRight = _state.refRight,
          refTop = _state.refTop,
          refBottom = _state.refBottom;


      var rightOverflow = refRight - rectRight;
      var leftOverflow = rectLeft - refLeft;
      var topOverflow = rectTop - refTop;
      var bottomOverflow = refBottom - rectBottom;

      var maxWidth = 'none';
      if (refWidth >= rectWidth) {
        maxWidth = rectWidth + 'px';
      }

      var maxHeight = 'none';
      if (refHeight >= rectHeight) {
        maxHeight = rectHeight + 'px';
      }

      var styles = {
        maxWidth: maxWidth,
        maxHeight: maxHeight,
        position: 'absolute'
      };

      var left = 0;
      if (leftOverflow > 0) {
        left = leftOverflow + 'px';
      }
      if (rightOverflow > 0) {
        left = -rightOverflow + 'px';
      }

      var top = 0;
      if (topOverflow > 0) {
        top = topOverflow + 'px';
      }
      if (bottomOverflow > 0) {
        top = -bottomOverflow + 'px';
      }

      return _react2.default.createElement(
        'div',
        {
          ref: function ref(_ref) {
            return _this3._ref = _ref;
          },
          className: className,
          style: _extends({}, styles, style)
        },
        _react2.default.createElement(
          'div',
          { style: {
              position: 'relative',
              left: left,
              top: top
            } },
          this.props.children
        )
      );
    }
  }]);

  return StickyNode;
}(_react.Component);

exports.default = StickyNode;


StickyNode.propTypes = {
  className: _react.PropTypes.string,
  restrictorNode: _react.PropTypes.object,
  // onMaxHeight: PropTypes.func, // TODO
  // onMaxWidth: PropTypes.func, // TODO
  style: _react.PropTypes.object
};

StickyNode.defaultProps = {
  restrictorNode: document.body,
  style: {}
};