devongovett-react-overlays/lib/AutoAffix.js

Utilities for creating robust overlay components

'use strict';

exports.__esModule = 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 _offset = require('dom-helpers/query/offset');

var _offset2 = _interopRequireDefault(_offset);

var _requestAnimationFrame = require('dom-helpers/util/requestAnimationFrame');

var _requestAnimationFrame2 = _interopRequireDefault(_requestAnimationFrame);

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

var _propTypes2 = _interopRequireDefault(_propTypes);

var _componentOrElement = require('prop-types-extra/lib/componentOrElement');

var _componentOrElement2 = _interopRequireDefault(_componentOrElement);

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _Affix = require('./Affix');

var _Affix2 = _interopRequireDefault(_Affix);

var _addEventListener = require('./utils/addEventListener');

var _addEventListener2 = _interopRequireDefault(_addEventListener);

var _getContainer = require('./utils/getContainer');

var _getContainer2 = _interopRequireDefault(_getContainer);

var _getDocumentHeight = require('./utils/getDocumentHeight');

var _getDocumentHeight2 = _interopRequireDefault(_getDocumentHeight);

var _ownerDocument = require('./utils/ownerDocument');

var _ownerDocument2 = _interopRequireDefault(_ownerDocument);

var _ownerWindow = require('./utils/ownerWindow');

var _ownerWindow2 = _interopRequireDefault(_ownerWindow);

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; }

var displayName = 'AutoAffix';

var propTypes = _extends({}, _Affix2.default.propTypes, {
  /**
   * The logical container node or component for determining offset from bottom
   * of viewport, or a function that returns it
   */
  container: _propTypes2.default.oneOfType([_componentOrElement2.default, _propTypes2.default.func]),
  /**
   * Automatically set width when affixed
   */
  autoWidth: _propTypes2.default.bool
});

// This intentionally doesn't inherit default props from `<Affix>`, so that the
// auto-calculated offsets can apply.
var defaultProps = {
  viewportOffsetTop: 0,
  autoWidth: true
};

/**
 * The `<AutoAffix/>` component wraps `<Affix/>` to automatically calculate
 * offsets in many common cases.
 */

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

  function AutoAffix(props, context) {
    _classCallCheck(this, AutoAffix);

    var _this = _possibleConstructorReturn(this, _React$Component.call(this, props, context));

    _this.onWindowScroll = function () {
      _this.onUpdate();
    };

    _this.onWindowResize = function () {
      if (_this.props.autoWidth) {
        (0, _requestAnimationFrame2.default)(function () {
          return _this.onUpdate();
        });
      }
    };

    _this.onDocumentClick = function () {
      (0, _requestAnimationFrame2.default)(function () {
        return _this.onUpdate();
      });
    };

    _this.onUpdate = function () {
      if (!_this._isMounted) {
        return;
      }

      var _getOffset = (0, _offset2.default)(_this.positioner),
          offsetTop = _getOffset.top,
          width = _getOffset.width;

      var container = (0, _getContainer2.default)(_this.props.container);
      var offsetBottom = void 0;
      if (container) {
        var documentHeight = (0, _getDocumentHeight2.default)((0, _ownerDocument2.default)(_this));

        var _getOffset2 = (0, _offset2.default)(container),
            top = _getOffset2.top,
            height = _getOffset2.height;

        offsetBottom = documentHeight - top - height;
      } else {
        offsetBottom = null;
      }

      _this.updateState(offsetTop, offsetBottom, width);
    };

    _this.updateState = function (offsetTop, offsetBottom, width) {
      if (offsetTop === _this.state.offsetTop && offsetBottom === _this.state.offsetBottom && width === _this.state.width) {
        return;
      }

      _this.setState({ offsetTop: offsetTop, offsetBottom: offsetBottom, width: width });
    };

    _this.state = {
      offsetTop: null,
      offsetBottom: null,
      width: null
    };
    return _this;
  }

  AutoAffix.prototype.componentDidMount = function componentDidMount() {
    var _this2 = this;

    this._isMounted = true;

    this._windowScrollListener = (0, _addEventListener2.default)((0, _ownerWindow2.default)(this), 'scroll', function () {
      return _this2.onWindowScroll();
    });

    this._windowResizeListener = (0, _addEventListener2.default)((0, _ownerWindow2.default)(this), 'resize', function () {
      return _this2.onWindowResize();
    });

    this._documentClickListener = (0, _addEventListener2.default)((0, _ownerDocument2.default)(this), 'click', function () {
      return _this2.onDocumentClick();
    });

    this.onUpdate();
  };

  AutoAffix.prototype.componentWillReceiveProps = function componentWillReceiveProps() {
    this._needPositionUpdate = true;
  };

  AutoAffix.prototype.componentDidUpdate = function componentDidUpdate() {
    if (this._needPositionUpdate) {
      this._needPositionUpdate = false;
      this.onUpdate();
    }
  };

  AutoAffix.prototype.componentWillUnmount = function componentWillUnmount() {
    this._isMounted = false;

    if (this._windowScrollListener) {
      this._windowScrollListener.remove();
    }
    if (this._documentClickListener) {
      this._documentClickListener.remove();
    }
    if (this._windowResizeListener) {
      this._windowResizeListener.remove();
    }
  };

  AutoAffix.prototype.render = function render() {
    var _this3 = this;

    var _props = this.props,
        autoWidth = _props.autoWidth,
        viewportOffsetTop = _props.viewportOffsetTop,
        children = _props.children,
        props = _objectWithoutProperties(_props, ['autoWidth', 'viewportOffsetTop', 'children']);

    var _state = this.state,
        offsetTop = _state.offsetTop,
        offsetBottom = _state.offsetBottom,
        width = _state.width;


    delete props.container;

    var effectiveOffsetTop = Math.max(offsetTop, viewportOffsetTop || 0);

    var _props2 = this.props,
        affixStyle = _props2.affixStyle,
        bottomStyle = _props2.bottomStyle;

    if (autoWidth) {
      affixStyle = _extends({ width: width }, affixStyle);
      bottomStyle = _extends({ width: width }, bottomStyle);
    }

    return _react2.default.createElement(
      'div',
      null,
      _react2.default.createElement('div', { ref: function ref(c) {
          _this3.positioner = c;
        } }),
      _react2.default.createElement(
        _Affix2.default,
        _extends({}, props, {
          offsetTop: effectiveOffsetTop,
          viewportOffsetTop: viewportOffsetTop,
          offsetBottom: offsetBottom,
          affixStyle: affixStyle,
          bottomStyle: bottomStyle
        }),
        children
      )
    );
  };

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

AutoAffix.displayName = displayName;
AutoAffix.propTypes = propTypes;
AutoAffix.defaultProps = defaultProps;

exports.default = AutoAffix;
module.exports = exports['default'];