react-virtualized/dist/commonjs/CellMeasurer/CellMeasurer.js

React components for efficiently rendering large, scrollable lists and tabular data

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));

var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));

var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));

var _getPrototypeOf3 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));

var _assertThisInitialized2 = _interopRequireDefault(require("@babel/runtime/helpers/assertThisInitialized"));

var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

var React = _interopRequireWildcard(require("react"));

var _reactDom = require("react-dom");

var _types = require("./types");

var _propTypes = _interopRequireDefault(require("prop-types"));

var _class, _temp;

/**
 * Wraps a cell and measures its rendered content.
 * Measurements are stored in a per-cell cache.
 * Cached-content is not be re-measured.
 */
var CellMeasurer = (_temp = _class =
/*#__PURE__*/
function (_React$PureComponent) {
  (0, _inherits2["default"])(CellMeasurer, _React$PureComponent);

  function CellMeasurer() {
    var _getPrototypeOf2;

    var _this;

    (0, _classCallCheck2["default"])(this, CellMeasurer);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = (0, _possibleConstructorReturn2["default"])(this, (_getPrototypeOf2 = (0, _getPrototypeOf3["default"])(CellMeasurer)).call.apply(_getPrototypeOf2, [this].concat(args)));
    (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "_child", void 0);
    (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "_measure", function () {
      var _this$props = _this.props,
          cache = _this$props.cache,
          _this$props$columnInd = _this$props.columnIndex,
          columnIndex = _this$props$columnInd === void 0 ? 0 : _this$props$columnInd,
          parent = _this$props.parent,
          _this$props$rowIndex = _this$props.rowIndex,
          rowIndex = _this$props$rowIndex === void 0 ? _this.props.index || 0 : _this$props$rowIndex;

      var _this$_getCellMeasure = _this._getCellMeasurements(),
          height = _this$_getCellMeasure.height,
          width = _this$_getCellMeasure.width;

      if (height !== cache.getHeight(rowIndex, columnIndex) || width !== cache.getWidth(rowIndex, columnIndex)) {
        cache.set(rowIndex, columnIndex, width, height);

        if (parent && typeof parent.recomputeGridSize === 'function') {
          parent.recomputeGridSize({
            columnIndex: columnIndex,
            rowIndex: rowIndex
          });
        }
      }
    });
    (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "_registerChild", function (element) {
      if (element && !(element instanceof Element)) {
        console.warn('CellMeasurer registerChild expects to be passed Element or null');
      }

      _this._child = element;

      if (element) {
        _this._maybeMeasureCell();
      }
    });
    return _this;
  }

  (0, _createClass2["default"])(CellMeasurer, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this._maybeMeasureCell();
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate() {
      this._maybeMeasureCell();
    }
  }, {
    key: "render",
    value: function render() {
      var children = this.props.children;
      return typeof children === 'function' ? children({
        measure: this._measure,
        registerChild: this._registerChild
      }) : children;
    }
  }, {
    key: "_getCellMeasurements",
    value: function _getCellMeasurements() {
      var cache = this.props.cache;
      var node = this._child || (0, _reactDom.findDOMNode)(this); // TODO Check for a bad combination of fixedWidth and missing numeric width or vice versa with height

      if (node && node.ownerDocument && node.ownerDocument.defaultView && node instanceof node.ownerDocument.defaultView.HTMLElement) {
        var styleWidth = node.style.width;
        var styleHeight = node.style.height; // If we are re-measuring a cell that has already been measured,
        // It will have a hard-coded width/height from the previous measurement.
        // The fact that we are measuring indicates this measurement is probably stale,
        // So explicitly clear it out (eg set to "auto") so we can recalculate.
        // See issue #593 for more info.
        // Even if we are measuring initially- if we're inside of a MultiGrid component,
        // Explicitly clear width/height before measuring to avoid being tainted by another Grid.
        // eg top/left Grid renders before bottom/right Grid
        // Since the CellMeasurerCache is shared between them this taints derived cell size values.

        if (!cache.hasFixedWidth()) {
          node.style.width = 'auto';
        }

        if (!cache.hasFixedHeight()) {
          node.style.height = 'auto';
        }

        var height = Math.ceil(node.offsetHeight);
        var width = Math.ceil(node.offsetWidth); // Reset after measuring to avoid breaking styles; see #660

        if (styleWidth) {
          node.style.width = styleWidth;
        }

        if (styleHeight) {
          node.style.height = styleHeight;
        }

        return {
          height: height,
          width: width
        };
      } else {
        return {
          height: 0,
          width: 0
        };
      }
    }
  }, {
    key: "_maybeMeasureCell",
    value: function _maybeMeasureCell() {
      var _this$props2 = this.props,
          cache = _this$props2.cache,
          _this$props2$columnIn = _this$props2.columnIndex,
          columnIndex = _this$props2$columnIn === void 0 ? 0 : _this$props2$columnIn,
          parent = _this$props2.parent,
          _this$props2$rowIndex = _this$props2.rowIndex,
          rowIndex = _this$props2$rowIndex === void 0 ? this.props.index || 0 : _this$props2$rowIndex;

      if (!cache.has(rowIndex, columnIndex)) {
        var _this$_getCellMeasure2 = this._getCellMeasurements(),
            height = _this$_getCellMeasure2.height,
            width = _this$_getCellMeasure2.width;

        cache.set(rowIndex, columnIndex, width, height); // If size has changed, let Grid know to re-render.

        if (parent && typeof parent.invalidateCellSizeAfterRender === 'function') {
          parent.invalidateCellSizeAfterRender({
            columnIndex: columnIndex,
            rowIndex: rowIndex
          });
        }
      }
    }
  }]);
  return CellMeasurer;
}(React.PureComponent), (0, _defineProperty2["default"])(_class, "propTypes", process.env.NODE_ENV === 'production' ? null : {
  "cache": function cache() {
    return (typeof _types.bpfrpt_proptype_CellMeasureCache === "function" ? _types.bpfrpt_proptype_CellMeasureCache.isRequired ? _types.bpfrpt_proptype_CellMeasureCache.isRequired : _types.bpfrpt_proptype_CellMeasureCache : _propTypes["default"].shape(_types.bpfrpt_proptype_CellMeasureCache).isRequired).apply(this, arguments);
  },
  "children": _propTypes["default"].oneOfType([_propTypes["default"].func, _propTypes["default"].node]).isRequired,
  "columnIndex": _propTypes["default"].number,
  "index": _propTypes["default"].number,
  "parent": _propTypes["default"].shape({
    invalidateCellSizeAfterRender: _propTypes["default"].func,
    recomputeGridSize: _propTypes["default"].func
  }).isRequired,
  "rowIndex": _propTypes["default"].number
}), _temp); // Used for DEV mode warning check

exports["default"] = CellMeasurer;
(0, _defineProperty2["default"])(CellMeasurer, "__internalCellMeasurerFlag", false);

if (process.env.NODE_ENV !== 'production') {
  CellMeasurer.__internalCellMeasurerFlag = true;
}