@ptsecurity/mosaic
Version:
30 lines • 3.32 kB
JavaScript
import { DataSource } from '@angular/cdk/collections';
import { BehaviorSubject, merge } from 'rxjs';
import { map } from 'rxjs/operators';
/**
* Data source for nested tree.
*
* The data source for nested tree doesn't have to consider node flattener, or the way to expand
* or collapse. The expansion/collapsion will be handled by TreeControl and each non-leaf node.
*/
export class McTreeNestedDataSource extends DataSource {
constructor() {
super(...arguments);
/* tslint:disable-next-line:naming-convention */
this._data = new BehaviorSubject([]);
}
get data() {
return this._data.value;
}
set data(value) {
this._data.next(value);
}
connect(collectionViewer) {
return merge(...[collectionViewer.viewChange, this._data])
.pipe(map(() => this.data));
}
disconnect() {
// no op
}
}
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