| /** |
| ****************************************************************************** |
| * Copyright © 2017-2018 PTA GmbH. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| ****************************************************************************** |
| */ |
| import { Pipe, PipeTransform } from '@angular/core'; |
| |
| import { ListItem } from './multiselect.model'; |
| |
| @Pipe({ |
| name: 'listFilter', |
| pure: false |
| }) |
| export class ListFilterPipe implements PipeTransform { |
| transform(items: ListItem[], filter: ListItem): ListItem[] { |
| if (!items || !filter) { |
| return items; |
| } |
| // filter items array, items which match and return true will be kept, false will be filtered out |
| return items.filter((item: ListItem) => this.applyFilter(item, filter)); |
| } |
| |
| /** |
| * Perform the filtering. |
| * |
| * @param {Book} book The book to compare to the filter. |
| * @param {Book} filter The filter to apply. |
| * @return {boolean} True if book satisfies filters, false if not. |
| */ |
| applyFilter(item: ListItem, filter: ListItem): boolean { |
| return !(filter.itemName && item.itemName && item.itemName.toLowerCase().indexOf(filter.itemName.toLowerCase()) === -1); |
| } |
| } |