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Viewing file:     CellMeasurer.js (7.17 KB)      -rw-r--r--

import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";
import _assertThisInitialized from "@babel/runtime/helpers/assertThisInitialized";
import _inherits from "@babel/runtime/helpers/inherits";
import _defineProperty from "@babel/runtime/helpers/defineProperty";

var _class, _temp;

import * as React from 'react';
import { findDOMNode } from 'react-dom';

/**
 * 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$PureComponent) {
  _inherits(CellMeasurer, _React$PureComponent);

  function CellMeasurer() {
    var _getPrototypeOf2;

    var _this;

    _classCallCheck(this, CellMeasurer);

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

    _this = _possibleConstructorReturn(this, (_getPrototypeOf2 = _getPrototypeOf(CellMeasurer)).call.apply(_getPrototypeOf2, [this].concat(args)));

    _defineProperty(_assertThisInitialized(_this), "_child", void 0);

    _defineProperty(_assertThisInitialized(_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
          });
        }
      }
    });

    _defineProperty(_assertThisInitialized(_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;
  }

  _createClass(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 || 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), _defineProperty(_class, "propTypes", process.env.NODE_ENV === 'production' ? null : {
  "cache": function cache() {
    return (typeof bpfrpt_proptype_CellMeasureCache === "function" ? bpfrpt_proptype_CellMeasureCache.isRequired ? bpfrpt_proptype_CellMeasureCache.isRequired : bpfrpt_proptype_CellMeasureCache : PropTypes.shape(bpfrpt_proptype_CellMeasureCache).isRequired).apply(this, arguments);
  },
  "children": PropTypes.oneOfType([PropTypes.func, PropTypes.node]).isRequired,
  "columnIndex": PropTypes.number,
  "index": PropTypes.number,
  "parent": PropTypes.shape({
    invalidateCellSizeAfterRender: PropTypes.func,
    recomputeGridSize: PropTypes.func
  }).isRequired,
  "rowIndex": PropTypes.number
}), _temp); // Used for DEV mode warning check

_defineProperty(CellMeasurer, "__internalCellMeasurerFlag", false);

export { CellMeasurer as default };

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

import { bpfrpt_proptype_CellMeasureCache } from "./types";
import PropTypes from "prop-types";