react-virtualized
Version:
React components for efficiently rendering large, scrollable lists and tabular data
187 lines (182 loc) • 7.58 kB
JavaScript
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 _inherits from "@babel/runtime/helpers/inherits";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
import * as React from 'react';
/*:: import type {CellMeasureCache} from './types';*/
import { cloneElement } from 'react';
/*:: type Children = (params: {measure: () => void}) => React.Element<*>;*/
/*:: type Cell = {
columnIndex: number,
rowIndex: number,
};*/
/*:: type Props = {
cache: CellMeasureCache,
children: Children | React.Element<*>,
columnIndex?: number,
index?: number,
parent: {
invalidateCellSizeAfterRender?: (cell: Cell) => void,
recomputeGridSize?: (cell: Cell) => void,
},
rowIndex?: number,
};*/
/**
* 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 = /*#__PURE__*/function (_React$PureComponent) {
function CellMeasurer() {
var _this;
_classCallCheck(this, CellMeasurer);
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
_this = _callSuper(this, CellMeasurer, [].concat(args));
_defineProperty(_this, "_child", /*#__PURE__*/React.createRef());
_defineProperty(_this, "_measure", function () {
var _this$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$_getCellMeasure.width;
if (height !== cache.getHeight(rowIndex, columnIndex) || width !== cache.getWidth(rowIndex, columnIndex)) {
cache.set(rowIndex, columnIndex, width, height);
if (parent && typeof parent.recomputeGridSize === 'function') {
parent.recomputeGridSize({
columnIndex: columnIndex,
rowIndex: rowIndex
});
}
}
});
_defineProperty(_this, "_registerChild", function (element) {
if (element && !(element instanceof Element)) {
console.warn('CellMeasurer registerChild expects to be passed Element or null');
}
_this._child.current = element;
if (element) {
_this._maybeMeasureCell();
}
});
return _this;
}
_inherits(CellMeasurer, _React$PureComponent);
return _createClass(CellMeasurer, [{
key: "componentDidMount",
value: function componentDidMount() {
this._maybeMeasureCell();
}
}, {
key: "componentDidUpdate",
value: function componentDidUpdate() {
this._maybeMeasureCell();
}
}, {
key: "render",
value: function render() {
var _this2 = this;
var children = this.props.children;
var resolvedChildren = typeof children === 'function' ? children({
measure: this._measure,
registerChild: this._registerChild
}) : children;
if (resolvedChildren === null) {
return resolvedChildren;
}
return /*#__PURE__*/cloneElement(resolvedChildren, {
ref: function ref(node) {
if (typeof resolvedChildren.ref === 'function') {
resolvedChildren.ref(node);
} else if (resolvedChildren.ref) {
resolvedChildren.ref.current = node;
}
_this2._child.current = node;
}
});
}
}, {
key: "_getCellMeasurements",
value: function _getCellMeasurements() {
var cache = this.props.cache;
var node = this._child.current;
// 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
});
}
}
}
}]);
}(React.PureComponent); // Used for DEV mode warning check
_defineProperty(CellMeasurer, "__internalCellMeasurerFlag", false);
export { CellMeasurer as default };
if (process.env.NODE_ENV !== 'production') {
CellMeasurer.__internalCellMeasurerFlag = true;
}