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145 lines
3.5 KiB
145 lines
3.5 KiB
import {ExComponent} from '../ExComponent.js'
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import {Attribute, Component, Element, Renders} from '../decorators.js'
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export interface NavBarItem {
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title: string,
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name: string,
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href?: string,
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right?: boolean,
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}
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@Component('ex-nav')
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export class NavBarComponent extends ExComponent {
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protected static styles = `
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<style>
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nav {
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display: flex;
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flex-direction: row;
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margin-top: 50px;
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margin-bottom: 20px;
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}
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ul {
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flex: 1;
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list-style-type: none;
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margin: 0;
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padding: 0;
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overflow: hidden;
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}
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li {
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float: left;
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}
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li.right {
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float: right;
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}
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li:hover {
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background: var(--color-background-darkened);
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}
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li a {
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display: block;
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text-align: center;
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padding: 16px 10px;
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text-decoration: none;
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color: var(--color-accent-text);
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}
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li a:visited {
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color: var(--color-accent-text);
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}
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span {
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font-size: 1.2em;
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font-weight: bold;
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padding: 14px;
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padding-right: 30px;
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padding-left: 0;
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}
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.items-container {
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display: none;
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}
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</style>
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`
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protected static html = `
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<nav>
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<slot name="branding"></slot>
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<span class="appName"></span>
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<ul></ul>
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</nav>
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<div class="items-container">
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<slot></slot>
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</div>
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`
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@Renders()
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public items: NavBarItem[] = []
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@Attribute()
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public appName = ''
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@Element('span.appName')
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protected appNameEl!: HTMLSpanElement
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@Element('ul')
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protected list!: HTMLUListElement
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render() {
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super.render()
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this.appNameEl.hidden = !this.appName
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this.appNameEl.innerText = this.appName || ''
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this.list.childNodes.forEach(x => x.remove())
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for ( const item of this.getItems() ) {
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const li = document.createElement('li')
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const a = document.createElement('a')
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li.appendChild(a)
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a.setAttribute('href', item.href ?? '#')
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a.innerText = item.title
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a.addEventListener('click', () => this.dispatchItemClick(item.name))
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if ( item.right ) {
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li.classList.add('right')
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}
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this.list.append(li)
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}
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}
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getItems(): NavBarItem[] {
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const itemEls = this.querySelectorAll('ex-nav-item').values()
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const items = []
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for ( const itemEl of itemEls ) {
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const title = itemEl.getAttribute('title')
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const name = itemEl.getAttribute('name')
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if ( title && name ) {
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const item: NavBarItem = {
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title,
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name,
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right: itemEl.hasAttribute('right'),
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}
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const href = itemEl.getAttribute('href')
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if ( href ) {
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item.href = href
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}
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items.push(item)
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}
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}
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return items
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}
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dispatchItemClick(name: string) {
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return this.dispatchCustom('onItemClick', { name })
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}
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}
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