openvidu-toolbar-panel-buttons 🔗

Check it on GitHub

The openvidu-toolbar-panel-buttons tutorial demonstrates how to add new additional panel buttons to the default toolbar, so custom panels may be toggled from it.

This customization is possible thanks to the ToolbarAdditionalPanelButtonsDirective, which provides us a simple way to customize the ToolbarComponent.


Running this tutorial 🔗

To run the tutorial you need the three components stated in OpenVidu application architecture: an OpenVidu deployment, your server application and your client application. In this order:

1. Run OpenVidu deployment 🔗

Using Docker Engine:

# WARNING: this container is not suitable for production deployments of OpenVidu
# Visit https://docs.openvidu.io/en/stable/deployment

docker run -p 4443:4443 --rm -e OPENVIDU_SECRET=MY_SECRET openvidu/openvidu-dev:2.23.0

2. Run your preferred server application sample 🔗

For more information visit Application server.

3. Run the client application tutorial 🔗

You need NPM and Angular CLI to serve the application. Check them with the following command:

npm -v
ng v

To serve the tutorial:

# Using the same repository openvidu-tutorials from step 2

cd openvidu-tutorials/openvidu-components/openvidu-toolbar-panel-buttons
npm install
ng serve

Go to http://localhost:4200 to test the app once the server is running.

To test the application with other devices in your network, visit this FAQ


Understanding the code 🔗

This is an Angular project generated with Angular CLI tool, and therefore you will see lots of configuration files and other stuff that doesn't really matter to us. We will focus on the following files under src/app/ folder:

  • app.module.ts: defines the AppComponent module where we import and configure the openvidu-angular library.
  • app.component.ts: defines AppComponent, main component of the app. It handles the request of OpenVidu tokens to pass them to the videoconference component, so it is able to connect to the OpenVidu session.

Configure openvidu-angular 🔗

First, we need to install the openvidu-angular library. You can check how to do that here.

The VideoconferenceComponent needs the OpenVidu tokens to connect to the session. We request them on ngOnInit method. The VideoconferenceComponent will automatically use them to connect to the session when available.

<ov-videoconference [tokens]="tokens" [toolbarDisplaySessionName]="false">
  <div *ovToolbarAdditionalPanelButtons style="text-align: center;">
    <button (click)="onButtonClicked()">MY PANEL</button>
  </div>
</ov-videoconference>

Inside of the ov-videoconference component we add the custom template tagged with the *ovToolbarAdditionalPanelButtons. You can see how the ToolbarAdditionalPanelButtonsDirective works here.

In this case, we simply add a new extra panel button that will show an alert when clicked.

app.component.ts declares the following properties and methods:

APPLICATION_SERVER_URL = 'http://localhost:5000/';

sessionId = "toolbar-additionalPanelbtn";
tokens!: TokenModel;

constructor(private httpClient: HttpClient) { }

async ngOnInit() {
  this.tokens = {
    webcam: await this.getToken(),
    screen: await this.getToken(),
  };
}

onButtonClicked() {
  alert('button clicked');
}

getToken() {
  // Requesting tokens to the server application
}

Where:

  • APPLICATION_SERVER_URL: URL to communicate the client application with the server application to request OpenVidu tokens.
  • sessionId: OpenVidu Session identifier. This is the session where the VideoconferenceComponent will connect to.
  • tokens: object where OpenVidu Tokens are stored. The VideoconferenceComponent uses this object to connect to the session.
  • constructor method with dependency injection.
  • ngOnInit method where OpenVidu Tokens are requested.
  • onButtonClicked method that shows an alert. It is called when our custom panel button is clicked on.