ngx-mat-multi-sort-fork/esm2022/lib/mat-multi-sort-data-source.mjs

An extension for the angular material table to support multi-sorting.

import { DataSource } from '@angular/cdk/collections';
import { BehaviorSubject } from 'rxjs';
export class MatMultiSortTableDataSource extends DataSource {
    constructor(sort, clientSideSorting = false) {
        super();
        this._data = new BehaviorSubject([]);
        this.sort = sort;
        this.clientSideSorting = clientSideSorting;
    }
    set data(data) {
        this._data.next(data);
    }
    get data() {
        return this._data.value;
    }
    connect() {
        return this._data;
    }
    disconnect() {
        this._data.complete();
    }
    orderData() {
        this._data.next(this.sortData(this._data.value, this.sort.actives, this.sort.directions));
    }
    sortData(data, actives, directions) {
        const _data = Object.assign(new Array(), data);
        if (this.clientSideSorting) {
            return _data.sort((i1, i2) => {
                return this._sortData(i1, i2, actives, directions);
            });
        }
        return _data;
    }
    _sortData(d1, d2, params, dirs) {
        // @ts-ignore -- need a typesafe way to express these accessor operations, ts-ignore could be a solution
        // if there's not a suitable solution offered by typescript
        if (d1[params[0]] > d2[params[0]]) {
            return dirs[0] === 'asc' ? 1 : -1;
            // @ts-ignore
        }
        else if (d1[params[0]] < d2[params[0]]) {
            return dirs[0] === 'asc' ? -1 : 1;
        }
        else {
            if (params.length > 1) {
                params = params.slice(1, params.length);
                dirs = dirs.slice(1, dirs.length);
                return this._sortData(d1, d2, params, dirs);
            }
            else {
                return 0;
            }
        }
    }
}
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