| /* |
| * 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 {DomUtils} from "./tobago-utils"; |
| |
| class Bar extends HTMLElement { |
| |
| private readonly CssClass = { |
| SHOW: "show", |
| COLLAPSE: "collapse", |
| COLLAPSING: "collapsing" |
| }; |
| private readonly ariaExpanded: string = "aria-expanded"; |
| private timeout: number; |
| private expanded: boolean; |
| |
| constructor() { |
| super(); |
| this.toggleButton.addEventListener("click", this.toggleCollapse.bind(this)); |
| } |
| |
| connectedCallback(): void { |
| this.expanded = this.toggleButton.getAttribute(this.ariaExpanded) === "true"; |
| } |
| |
| private toggleCollapse(event: MouseEvent): void { |
| window.clearTimeout(this.timeout); |
| |
| if (this.expanded) { |
| this.expanded = false; |
| this.navbarContent.style.height = this.navbarContent.scrollHeight + "px"; |
| this.navbarContent.offsetHeight; //force reflow, to make sure height is set |
| this.navbarContent.classList.add(this.CssClass.COLLAPSING); |
| this.navbarContent.classList.remove(this.CssClass.COLLAPSE); |
| this.navbarContent.classList.remove(this.CssClass.SHOW); |
| this.navbarContent.style.height = null; |
| |
| this.timeout = window.setTimeout(() => { |
| this.navbarContent.classList.remove(this.CssClass.COLLAPSING); |
| this.navbarContent.classList.add(this.CssClass.COLLAPSE); |
| this.toggleButton.setAttribute(this.ariaExpanded, "false"); |
| }, DomUtils.getTransitionTime(this.navbarContent)); |
| } else { |
| this.expanded = true; |
| this.navbarContent.classList.remove(this.CssClass.COLLAPSE); |
| this.navbarContent.classList.add(this.CssClass.COLLAPSING); |
| this.navbarContent.style.height = this.navbarContent.scrollHeight + "px"; |
| |
| this.timeout = window.setTimeout(() => { |
| this.navbarContent.classList.remove(this.CssClass.COLLAPSING); |
| this.navbarContent.classList.add(this.CssClass.COLLAPSE); |
| this.navbarContent.classList.add(this.CssClass.SHOW); |
| this.navbarContent.style.height = null; |
| this.toggleButton.setAttribute(this.ariaExpanded, "true"); |
| }, DomUtils.getTransitionTime(this.navbarContent)); |
| } |
| } |
| |
| private get toggleButton(): HTMLButtonElement { |
| return this.querySelector(".navbar-toggler"); |
| } |
| |
| private get navbarContent(): HTMLDivElement { |
| return this.querySelector(".navbar-collapse"); |
| } |
| } |
| |
| document.addEventListener("tobago.init", function (event: Event): void { |
| if (window.customElements.get("tobago-bar") == null) { |
| window.customElements.define("tobago-bar", Bar); |
| } |
| }); |