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StickyTreeWithRoot.jsx
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StickyTreeWithRoot.jsx
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import React from 'react';
import { StickyTree } from 'react-virtualized-sticky-tree';
import Measure from 'react-measure';
export default class StickyTreeWithRoot extends React.PureComponent {
constructor(props) {
super(props);
this.getChildren = this.getChildren.bind(this);
this.rowRenderer = this.rowRenderer.bind(this);
this.nodes = require('./countries.json');
this.backgroundColors = [
'#45b3e0',
'#5bbce4',
'#71c5e7',
'#87ceeb'
];
this.state = {
dimensions: {}
}
}
rowRenderer({ id, style }) {
const node = this.nodes[id];
style = { ...style, backgroundColor: this.backgroundColors[node.depth] };
return (
<div className="my-sticky-row" style={style}>{node.name}</div>
);
}
getChildren(id) {
if (this.nodes[id].children) {
return this.nodes[id].children.map(childId => ({
id: childId,
height: 30,
isSticky: !!this.nodes[childId].children,
stickyTop: 30 * this.nodes[childId].depth,
zIndex: 4 - this.nodes[childId].depth,
}));
}
}
render() {
return (
<Measure
bounds
onResize={(contentRect) => {
this.setState({ dimensions: contentRect.bounds });
}}
>
{({ measureRef }) => {
return (<div ref={measureRef} className="sticky-tree-wrapper">
<StickyTree
width={this.state.dimensions.width}
height={this.state.dimensions.height}
root={{id: 0, height: 30, isSticky: true, top: 0, zIndex: 4}}
renderRoot={true}
rowRenderer={this.rowRenderer}
getChildren={this.getChildren}
overscanRowCount={20}
/>
</div>)
}
}
</Measure>
);
}
}