@one-platform/opc-nav v0.0.4-prerelease
opc-nav Component š
Opc-Nav is a fully customizable web component developed using Lit elements for Red Hat One Platform. Its primarily used as the navigation bar that contains links, menu buttons, and logo.
Prerequisites
Opc-Nav is implement under Red Hat design guidelines. Therefore the component uses Red Hat official font. This can be easily imported with google cdn at the top of HTML document.
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=Red+Hat+Display&display=swap"
rel="stylesheet"
/>
<link
href="https://fonts.googleapis.com/css2?family=Red+Hat+Text&display=swap"
rel="stylesheet"
/>Guidelines
Details
It is a mandatory slot component that contains the product logo, positioned at the left extreme. The best component would be an image component. The height of the image must be within 60px, which is the height of the navbar. It can be changed with the CSS variable --opc-nav-height.
Code
<opc-nav>
<img slot="opc-nav-logo" />
<opc-nav-search slot="opc-nav-search"></opc-nav-search>
</opc-nav>Screenshot

Details
Links are the quick reference links for easy navigation, positioned after the logo along the middle. By default, it could be added with the links attribute. We can also customize the entire links by using slot opc-nav-menu-links. This will replace the entire links component container.
Code
<opc-nav>
<img slot="opc-nav-logo" src="" alt="logo" />
<opc-nav-search slot="opc-nav-search"></opc-nav-search>
</opc-nav>const links = [
{ name: 'Blog', href: '#' },
{ name: 'Documentation', href: '#' },
];
document.querySelector('opc-nav').links = links;Screenshot

Details
The nav buttons, enable utility actions that enhance the user experience. By default, opc-nav provides two buttons with there corresponding events. Menu buttons can be replaced with the slot opc-nav-btn. Icon buttons with size of 60px are prefered. activeMenu property provides active class styling to show users which one is selected. It accepts menu | notification as value.
| Name | Icon | Event |
|---|---|---|
| Notification Button | Bell Icon | opc-nav-btn-notification:click |
| Menu Button | Grid Icon | opc-nav-btn-menu:click |
Code (Default)
<opc-nav>
<img slot="opc-nav-logo" src="" alt="logo" />
<opc-nav-search slot="opc-nav-search"></opc-nav-search>
</opc-nav>Screenshot

Code (Search hidden and custom button)
<opc-nav>
<img slot="opc-nav-logo" src="" alt="logo" />
<button slot="opc-nav-btn">R</button>
</opc-nav>Screenshot

Details
opc-nav-search is a search component for the opc-nav. It enables modular control on how the search works. It has events opc-nav-search:change on input change and opc-nav-search:search on search submit.
Code (Default)
<opc-nav>
<opc-nav-search slot="opc-nav-search"></opc-nav-search>
</opc-nav>document
.querySelector('opc-nav-search')
.addEventListener('opc-nav-search:change', function (event) {
console.log(event.detail.value);
});
document
.querySelector('opc-nav-search')
.addEventListener('opc-nav-search:submit', function (event) {
console.log(event.detail.value);
});Slots
There are total 4 slots of which 3 are optional and one is mandatory
Mandatory Slots
opc-nav-logo: To set the logo of the application in navbar. Suggested component would be an<img/>
Optional Slots
opc-nav-menu-links: Container component that contains various nav links. If not given andlinksattribute will be shown.opc-nav-search: Container component that contains the search component.opc-nav-btn: The buttons at end of the navbar used for various actions. If not provided by defaultNotification Bell ButtonandMenu Buttonwill be shown with corresponding events.
Attributes
opc-nav
document.querySelector('opc-nav').links = [{ name: 'Blog', href: '#' }];activeButton- Type:
menu | notification - Default value: null
- Type:
document.querySelector('opc-nav').activeMenu = 'menu';opc-nav-search
value- Type:
String - Default value:
""
- Type:
document.querySelector('opc-nav-search').value = 'Search';placeholder- Type:
String - Default value:
Search application, documents, contents etc
- Type:
document.querySelector('opc-nav-search').placeholder = 'Search';Events
opc-nav
There are two events emitted by opc-nav both are dispatched on click of navbar notification(bell icon) and menu(grid icon) button.
opc-nav-btn-menu:click
Dispatched on menu(grid icon) button click.
Example:
document
.querySelector('opc-nav')
.addEventListener('opc-nav-btn-menu:click', function (event) {
alert('menu got clicked');
});opc-nav-btn-notification:click
Dispatched on notification(bell icon) button click.
Example:
document
.querySelector('opc-nav')
.addEventListener('opc-nav-btn-notification:click', function (event) {
alert('notification got clicked');
});opc-nav-search
opc-nav-search:change
Dispatched on input change of search.
Example:
document
.querySelector('opc-nav-search')
.addEventListener('opc-nav-search:change', function (event) {
console.log(event.detail.value);
});opc-nav-btn-notification:click
Dispatched on notification(bell icon) button click.
Example:
document
.querySelector('opc-nav')
.addEventListener('opc-nav-search:submit', function (event) {
alert(event.detail.value);
});CSS Variables
opc-nav
| CSS Variable name | Value |
|---|---|
--opc-nav-height | 60px |
--opc-nav-width | 100% |
--opc-nav-position-top | 0 |
--opc-nav-position-left | 0 |
--opc-nav-transition--defaul | 120ms ease-in-out |
--opc-nav-menu__spacing-size | 24px |
--opc-nav-menu__link-color | #151515 |
--opc-nav-container__z-index | 9 |
--opc-nav-btn__padding | 16px |
--opc-nav-display | block |
--opc-nav-btn__hover-color | #316dc11a |
--opc-nav-link__hover-color | #0066cc |
opc-nav-search
| CSS Variable name | Value |
|---|---|
--opc-nav-search-bg | #f3f3f3 |
--opc-nav-search__padding | 12px 17px |
--opc-nav-search__border-radius | 8px |
Install
npm installUsage
Install opc-nav
npm install --save @one-platform/opc-navFor VanillaJS
- Import component
import '@one-platform/opc-nav/dist/opc-nav';- Add component in html
<opc-nav> </opc-nav>For Angular
- In your app.module include the
CUSTOM_ELEMENTS_SCHEMAand import the component
import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import '@one-platform/opc-nav/dist/opc-nav';
@NgModule({
declarations: [AppComponent],
imports: [BrowserModule],
schemas: [CUSTOM_ELEMENTS_SCHEMA],
providers: [],
bootstrap: [AppComponent],
})
export class AppModule {}- Add component in any component html template
<opc-nav> </opc-nav>For React
- Import the component in App.js
import '@one-platform/opc-nav/dist/opc-nav';- Add component in any component html render
<opc-nav> </opc-nav>Development server
- Run development server
npm run dev opc-navBuild
npm run build opc-navRun tests
npm run testš¤ Contributors
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