| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| import {FormArray, FormGroup, ValidationErrors} from '@angular/forms'; |
| |
| export function optionValueUnique(array: FormArray): ValidationErrors | null { |
| const options: FormGroup[] = array.controls as FormGroup[]; |
| |
| const values = options |
| .map(optionGroup => parseInt(optionGroup.get('value').value, 10)); |
| |
| const set = new Set(); |
| |
| values.forEach(number => set.add(number)); |
| |
| if (set.size !== values.length) { |
| return { |
| optionValueUnique: true |
| }; |
| } |
| |
| return null; |
| } |