Rename folders

src/app/lists/device-list/device-list-datasource.ts

@@ -0,0 +1,82 @@
+import { DataSource } from '@angular/cdk/collections';
+import { MatPaginator } from '@angular/material/paginator';
+import { MatSort } from '@angular/material/sort';
+
+import { map } from 'rxjs/operators';
+import { Observable, of as observableOf, merge, Subject } from 'rxjs';
+import { Device } from '../../device';
+import { SystemConfigService } from '../../system-config.service';
+
+/**
+ * Data source for the DeviceList view. This class should
+ * encapsulate all logic for fetching and manipulating the displayed data
+ * (including sorting, pagination, and filtering).
+ */
+export class DeviceListDataSource extends DataSource<Device> {
+  data: Device[];
+  dataSubject: Subject<Device[]>;
+  paginator: MatPaginator;
+  sort: MatSort;
+
+  constructor(private systemConfigService: SystemConfigService) {
+    super();
+  }
+
+  /**
+   * Connect this data source to the table. The table will only update when
+   * the returned stream emits new items.
+   * @returns A stream of the items to be rendered.
+   */
+  connect(): Observable<Device[]> {
+    // Combine everything that affects the rendered data into one update
+    // st
+    const dataMutations = [
+      this.dataSubject,
+      observableOf(this.data),
+      this.paginator.page,
+      this.sort.sortChange
+    ];
+
+    return merge(...dataMutations).pipe(map(() => {
+      return this.getPagedData(this.getSortedData([...this.data]));
+    }));
+  }
+
+  /**
+   *  Called when the table is being destroyed. Use this function, to clean up
+   * any open connections or free any held resources that were set up during connect.
+   */
+  disconnect() { }
+
+  /**
+   * Paginate the data (client-side). If you're using server-side pagination,
+   * this would be replaced by requesting the appropriate data from the server.
+   */
+  private getPagedData(data: Device[]) {
+    const startIndex = this.paginator.pageIndex * this.paginator.pageSize;
+    return data.splice(startIndex, this.paginator.pageSize);
+  }
+
+  /**
+   * Sort the data (client-side). If you're using server-side sorting,
+   * this would be replaced by requesting the appropriate data from the server.
+   */
+  private getSortedData(data: Device[]) {
+    if (!this.sort.active || this.sort.direction === '') {
+      return data;
+    }
+
+    return data.sort((a, b) => {
+      const isAsc = this.sort.direction === 'asc';
+      switch (this.sort.active) {
+        case 'name': return compare(a.name, b.name, isAsc);
+        case 'id': return compare(+a.deviceID, +b.deviceID, isAsc);
+        default: return 0;
+      }
+    });
+  }
+}
+
+function compare(a: string | number, b: string | number, isAsc: boolean) {
+  return (a < b ? -1 : 1) * (isAsc ? 1 : -1);
+}