This application is a fully self-contained demonstration for chat messaging. To add members, there is a Screen for self-registration that uses OutSystems User Management.

Installation is simply installing the application from Forge or adding the .OAP file to Service Studio. Publish the module, then launch it in a browser!

NOTES

1. This application uses JavaScript to set an interval to update or poll for new messages. The 10-second interval can be adjusted in the script block on "OnInitialize_StartPolling" Client Action.
2. A small block of JavaScript is also used to scroll to the bottom of the messages when loaded or refreshed.
3. It uses three Client Variables to track the users selected group or selected user so that they can resume when they log in again or refresh the browser.

I attempted to make each variable, parameter, action, and aggregate self-explanatory and included some descriptions. Please let me know if you have any trouble understanding the logic.