Download react-grid-layout/test/examples/10-dynamic-min-max-wh.jsx from Devendra174/react-code-dataset: direct link, hf CLI and curl.
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| import React from "react"; | |
| import _ from "lodash"; | |
| import RGL, { WidthProvider } from "react-grid-layout"; | |
| const ReactGridLayout = WidthProvider(RGL); | |
| /** | |
| * This layout demonstrates how to use the `onResize` handler to enforce a min/max width and height. | |
| * | |
| * In this grid, all elements are allowed a max width of 2 if the height < 3, | |
| * and a min width of 2 if the height >= 3. | |
| */ | |
| export default class DynamicMinMaxLayout extends React.PureComponent { | |
| static defaultProps = { | |
| isDraggable: true, | |
| isResizable: true, | |
| items: 20, | |
| rowHeight: 30, | |
| onLayoutChange: function() {}, | |
| cols: 12 | |
| }; | |
| generateDOM() { | |
| // Generate items with properties from the layout, rather than pass the layout directly | |
| const layout = this.generateLayout(); | |
| return _.map(layout, function(l) { | |
| return ( | |
| <div key={l.i} data-grid={l}> | |
| <span className="text">{l.i}</span> | |
| </div> | |
| ); | |
| }); | |
| } | |
| generateLayout() { | |
| const p = this.props; | |
| return _.map(new Array(p.items), function(item, i) { | |
| const w = _.random(1, 2); | |
| const h = _.random(1, 3); | |
| return { | |
| x: (i * 2) % 12, | |
| y: Math.floor(i / 6), | |
| w: w, | |
| h: h, | |
| i: i.toString() | |
| }; | |
| }); | |
| } | |
| onLayoutChange(layout) { | |
| this.props.onLayoutChange(layout); | |
| } | |
| onResize(layout, oldLayoutItem, layoutItem, placeholder) { | |
| // `oldLayoutItem` contains the state of the item before the resize. | |
| // You can modify `layoutItem` to enforce constraints. | |
| if (layoutItem.h < 3 && layoutItem.w > 2) { | |
| layoutItem.w = 2; | |
| placeholder.w = 2; | |
| } | |
| if (layoutItem.h >= 3 && layoutItem.w < 2) { | |
| layoutItem.w = 2; | |
| placeholder.w = 2; | |
| } | |
| } | |
| render() { | |
| return ( | |
| <ReactGridLayout | |
| onLayoutChange={this.onLayoutChange} | |
| onResize={this.onResize} | |
| {...this.props} | |
| > | |
| {this.generateDOM()} | |
| </ReactGridLayout> | |
| ); | |
| } | |
| } | |
| if (process.env.STATIC_EXAMPLES === true) { | |
| import("../test-hook.jsx").then(fn => fn.default(DynamicMinMaxLayout)); | |
| } | |