react-virtualized
Version:
React components for efficiently rendering large, scrollable lists and tabular data
278 lines • 11.6 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 ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
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 Immutable from 'immutable';
import PropTypes from 'prop-types';
import * as React from 'react';
import { ContentBox, ContentBoxHeader, ContentBoxParagraph } from '../demo/ContentBox';
import { LabeledInput, InputRow } from '../demo/LabeledInput';
import { CellMeasurer, CellMeasurerCache } from '../CellMeasurer';
import AutoSizer from '../AutoSizer';
import WindowScroller from '../WindowScroller';
import createCellPositioner from './createCellPositioner';
import Masonry from './Masonry';
import styles from './Masonry.example.css';
var GridExample = /*#__PURE__*/function (_React$PureComponent) {
function GridExample(props, context) {
var _this;
_classCallCheck(this, GridExample);
_this = _callSuper(this, GridExample, [props, context]);
// This is a bit of a hack to simulate newly loaded cells
_defineProperty(_this, "_resetList", function () {
var ROW_HEIGHTS = [25, 50, 75, 100];
var list = _this.context.list;
list.forEach(function (datum) {
datum.size = ROW_HEIGHTS[Math.floor(Math.random() * ROW_HEIGHTS.length)];
});
_this._cache.clearAll();
_this._resetCellPositioner();
_this._masonry.clearCellPositions();
});
_this._columnCount = 0;
_this._cache = new CellMeasurerCache({
defaultHeight: 250,
defaultWidth: 200,
fixedWidth: true
});
_this.state = {
columnWidth: 200,
height: 300,
gutterSize: 10,
overscanByPixels: 0,
windowScrollerEnabled: false
};
_this._cellRenderer = _this._cellRenderer.bind(_this);
_this._onResize = _this._onResize.bind(_this);
_this._renderAutoSizer = _this._renderAutoSizer.bind(_this);
_this._renderMasonry = _this._renderMasonry.bind(_this);
_this._setMasonryRef = _this._setMasonryRef.bind(_this);
return _this;
}
_inherits(GridExample, _React$PureComponent);
return _createClass(GridExample, [{
key: "render",
value: function render() {
var _this2 = this;
var _this$state = this.state,
columnWidth = _this$state.columnWidth,
height = _this$state.height,
gutterSize = _this$state.gutterSize,
overscanByPixels = _this$state.overscanByPixels,
windowScrollerEnabled = _this$state.windowScrollerEnabled;
var child;
if (windowScrollerEnabled) {
child = /*#__PURE__*/React.createElement(WindowScroller, {
overscanByPixels: overscanByPixels
}, this._renderAutoSizer);
} else {
child = this._renderAutoSizer({
height: height
});
}
return /*#__PURE__*/React.createElement(ContentBox, null, /*#__PURE__*/React.createElement(ContentBoxHeader, {
text: "Masonry",
sourceLink: "https://github.com/bvaughn/react-virtualized/blob/master/source/Masonry/Masonry.example.js",
docsLink: "https://github.com/bvaughn/react-virtualized/blob/master/docs/Masonry.md"
}), /*#__PURE__*/React.createElement(ContentBoxParagraph, null, "Optimized for masonry layouts. Cells are j.i.t. measured and layed out as a user scrolls. Sizes are cached so that resize/reflow is fast and does not require re-measuring."), /*#__PURE__*/React.createElement(ContentBoxParagraph, null, /*#__PURE__*/React.createElement("label", {
className: styles.checkboxLabel
}, /*#__PURE__*/React.createElement("input", {
"aria-label": "Use WindowScroller?",
checked: windowScrollerEnabled,
className: styles.checkbox,
type: "checkbox",
onChange: function onChange(event) {
// HACK Because this demo switches between using WindowScroller and not,
// It's easier to clear the cache when toggling modes to avoid a partially stale state.
_this2._cache.clearAll();
_this2.setState({
windowScrollerEnabled: event.target.checked
});
}
}), "Use ", /*#__PURE__*/React.createElement("code", null, "WindowScroller"), "?"), /*#__PURE__*/React.createElement("label", {
className: styles.checkboxLabel
}, /*#__PURE__*/React.createElement("button", {
onClick: this._resetList
}, "Reset List Data"))), /*#__PURE__*/React.createElement(InputRow, null, /*#__PURE__*/React.createElement(LabeledInput, {
label: "Height",
name: "height",
onChange: function onChange(event) {
_this2.setState({
height: parseInt(event.target.value, 10) || 300
});
},
value: height
}), /*#__PURE__*/React.createElement(LabeledInput, {
label: "Column Width",
name: "columnWidth",
onChange: function onChange(event) {
_this2._cache.clearAll();
_this2.setState({
columnWidth: parseInt(event.target.value, 10) || 200
}, function () {
_this2._calculateColumnCount();
_this2._resetCellPositioner();
_this2._masonry.clearCellPositions();
});
},
value: columnWidth
}), /*#__PURE__*/React.createElement(LabeledInput, {
label: "Gutter Size",
name: "gutterSize",
onChange: function onChange(event) {
_this2.setState({
gutterSize: parseInt(event.target.value, 10) || 10
}, function () {
_this2._calculateColumnCount();
_this2._resetCellPositioner();
_this2._masonry.recomputeCellPositions();
});
},
value: gutterSize
}), /*#__PURE__*/React.createElement(LabeledInput, {
label: "Overscan (px)",
name: "overscanByPixels",
onChange: function onChange(event) {
_this2.setState({
overscanByPixels: parseInt(event.target.value, 10) || 0
});
},
value: overscanByPixels
})), child);
}
}, {
key: "_calculateColumnCount",
value: function _calculateColumnCount() {
var _this$state2 = this.state,
columnWidth = _this$state2.columnWidth,
gutterSize = _this$state2.gutterSize;
this._columnCount = Math.floor(this._width / (columnWidth + gutterSize));
}
}, {
key: "_cellRenderer",
value: function _cellRenderer(_ref) {
var index = _ref.index,
key = _ref.key,
parent = _ref.parent,
style = _ref.style;
var list = this.context.list;
var columnWidth = this.state.columnWidth;
var datum = list.get(index % list.size);
return /*#__PURE__*/React.createElement(CellMeasurer, {
cache: this._cache,
index: index,
key: key,
parent: parent
}, /*#__PURE__*/React.createElement("div", {
className: styles.Cell,
style: _objectSpread(_objectSpread({}, style), {}, {
width: columnWidth
})
}, /*#__PURE__*/React.createElement("div", {
style: {
backgroundColor: datum.color,
borderRadius: '0.5rem',
height: datum.size * 3,
marginBottom: '0.5rem',
width: '100%',
fontSize: 20,
color: 'white',
display: 'flex',
alignItems: 'center',
justifyContent: 'center'
}
}, index), datum.random));
}
}, {
key: "_initCellPositioner",
value: function _initCellPositioner() {
if (typeof this._cellPositioner === 'undefined') {
var _this$state3 = this.state,
columnWidth = _this$state3.columnWidth,
gutterSize = _this$state3.gutterSize;
this._cellPositioner = createCellPositioner({
cellMeasurerCache: this._cache,
columnCount: this._columnCount,
columnWidth: columnWidth,
spacer: gutterSize
});
}
}
}, {
key: "_onResize",
value: function _onResize(_ref2) {
var width = _ref2.width;
this._width = width;
this._calculateColumnCount();
this._resetCellPositioner();
this._masonry.recomputeCellPositions();
}
}, {
key: "_renderAutoSizer",
value: function _renderAutoSizer(_ref3) {
var height = _ref3.height,
scrollTop = _ref3.scrollTop;
this._height = height;
this._scrollTop = scrollTop;
var overscanByPixels = this.state.overscanByPixels;
return /*#__PURE__*/React.createElement(AutoSizer, {
disableHeight: true,
height: height,
onResize: this._onResize,
overscanByPixels: overscanByPixels,
scrollTop: this._scrollTop
}, this._renderMasonry);
}
}, {
key: "_renderMasonry",
value: function _renderMasonry(_ref4) {
var width = _ref4.width;
this._width = width;
this._calculateColumnCount();
this._initCellPositioner();
var _this$state4 = this.state,
height = _this$state4.height,
overscanByPixels = _this$state4.overscanByPixels,
windowScrollerEnabled = _this$state4.windowScrollerEnabled;
return /*#__PURE__*/React.createElement(Masonry, {
autoHeight: windowScrollerEnabled,
cellCount: 1000,
cellMeasurerCache: this._cache,
cellPositioner: this._cellPositioner,
cellRenderer: this._cellRenderer,
height: windowScrollerEnabled ? this._height : height,
overscanByPixels: overscanByPixels,
ref: this._setMasonryRef,
scrollTop: this._scrollTop,
width: width
});
}
}, {
key: "_resetCellPositioner",
value: function _resetCellPositioner() {
var _this$state5 = this.state,
columnWidth = _this$state5.columnWidth,
gutterSize = _this$state5.gutterSize;
this._cellPositioner.reset({
columnCount: this._columnCount,
columnWidth: columnWidth,
spacer: gutterSize
});
}
}, {
key: "_setMasonryRef",
value: function _setMasonryRef(ref) {
this._masonry = ref;
}
}]);
}(React.PureComponent);
_defineProperty(GridExample, "contextTypes", {
list: PropTypes.instanceOf(Immutable.List).isRequired
});
export { GridExample as default };