for Bot's Web App, is the main button implemented at client side?

[vincentneo]

I was looking at implementing to let users access web apps used in bot chats, when accessed via my client.

Testing using @DurgerKingBot from the link above, I am unable to see the web app's MainButton, so I am assuming it should be implemented from the client side, rather than it being a html button?

The url used for displaying the web app, is from the result of calling openWebApp in TDLib.

For visual context, I am referring to the green button on the bottom of the web app:

Official app:

Third party watchOS based client browser:

[pantojax23]

Va

El dom., 20 de agosto de 2023 4:47 a. m., Vincent Neo < @.***> escribió:

I was looking at implementing to let users access web apps https://core.telegram.org/bots/webapps used in bot chats, when accessed via my client.

Testing using @DurgerKingBot https://t.me/durgerkingbot from the link above, I am unable to see the web app's MainButton https://core.telegram.org/bots/webapps#mainbutton, so I am assuming it should be implemented from the client side, rather than it being a html button?

The url used for displaying the web app, is from the result of calling openWebApp in TDLib.

For visual context, I am referring to the green button on the bottom of the web app:

Official app: [image: screenshot of durger king web app running within Telegram for Mac.] https://user-images.githubusercontent.com/23420208/261843988-95fbd9e0-61e9-4591-b406-afcb9e9f0b67.png

Third party watchOS based client browser: [image: screenshot of durger king web app running within Apple watchOS browser environment] https://user-images.githubusercontent.com/23420208/261844071-79aaf8c4-68e9-4dd2-be18-2e1733bd2908.png

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[levlam]

Yes, the main button is added by the app. The Web App can control the main button by sending "web_app_setup_main_button" events to the application.

[vincentneo]

How does the TDLib based client receive the event though, is there a particular update that should be looked at?

[levlam]

The interaction is done directly between the Web App and the app as described in https://core.telegram.org/api/web-events#webviewproxy.

[vincentneo]

oh so basically it is communicated via javascript?

[levlam]

Yes.

[vincentneo]

Alright! Thanks for the clarification.