| /* |
| * 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 {Focus} from "./tobago-focus"; |
| |
| class SelectOneRadio extends HTMLElement { |
| |
| private oldCheckedId: string = ""; |
| |
| constructor() { |
| super(); |
| } |
| |
| connectedCallback(): void { |
| this.saveSelection(); |
| for (const radio of this.radioGroup) { |
| radio.addEventListener("focus", Focus.setLastFocusId); |
| radio.addEventListener("click", this.clickSelection.bind(this)); |
| } |
| } |
| |
| private clickSelection(event: MouseEvent): void { |
| const radio = event.currentTarget as HTMLInputElement; |
| |
| if (radio.readOnly) { |
| this.revertSelection(); |
| } else if (!radio.disabled && !radio.required && radio.id === this.oldCheckedId) { |
| radio.checked = false; |
| this.oldCheckedId = ""; |
| } |
| |
| this.saveSelection(); |
| } |
| |
| private revertSelection(): void { |
| for (const radio of this.radioGroup) { |
| radio.checked = radio.id === this.oldCheckedId; |
| } |
| } |
| |
| private saveSelection(): void { |
| for (const radio of this.radioGroup) { |
| if (radio.checked) { |
| this.oldCheckedId = radio.id; |
| } |
| } |
| } |
| |
| get radioGroup(): NodeListOf<HTMLInputElement> { |
| return this.querySelectorAll<HTMLInputElement>("input[type='radio'][name='" + this.id + "']"); |
| } |
| } |
| |
| document.addEventListener("DOMContentLoaded", function (event: Event): void { |
| window.customElements.define("tobago-select-one-radio", SelectOneRadio); |
| }); |