[SF][A11y][MessageView]: [initial focus is not set when expand the detail view]

[tandan0813]

Describe the bug

1. When the expandable info section is activated, the initial focus is not set. The user must press the Tab key to locate the focus indicator. And on returning back from the expanded section, focus is lost.

2. No intimation on the presence of expandable section and neither activating keys are announced.

Please see the storybook: https://sap.github.io/ui5-webcomponents-react/v2/?path=/docs/user-feedback-messageview--docs

Isolated Example

https://sap.github.io/ui5-webcomponents-react/v2/?path=/docs/user-feedback-messageview--docs

Reproduction steps

...

Expected Behaviour

1. Ensure focus is not lost and is visible when the section is expanded. 
2. Ensure to provide screen reader announcements when sections are expanded. Also make sure the activation keys should be announced.

Screenshots or Videos

No response

UI5 Web Components for React Version

2.8.0

UI5 Web Components Version

2.8.0

Browser

Chrome

Operating System

No response

Additional Context

No response

Relevant log output

Organization

No response

Declaration

• I’m not disclosing any internal or sensitive information.

[Lukas742]

Hi @tandan0813

please extend your description with clear steps to reproduce the issue. Otherwise we're unfortunately not able to assist you.

[tandan0813]

Hi @Lukas742
You can simply see the storybook of the MessageView:

Issue 1: When we enter the detail view of the MessageView through the MessageItem, the initial focus is not set. In the below sceniario, when we enter the detail view through link, the first focus should be on the Link. I can do that by adding focus in onItemSelect function. And when we returned to the MessageItem list view through back button, the focus is expected to set on the trigger element, I think it's a common requirement that would be implemented by MessageView component side.

Issue2: When a MessageItem is expandable, we should add some informational text for blind users to tell them they can open the detail view through press enter or something like that.

[Lukas742]

Hi @tandan0813

thanks for the clarification. This PR will fix the first issue and also add an announcement ("Has Details") if details are available.
I didn't find specifications for a special announcement regarding the keys, so for this to be implemented this request would need to go through the Inner Source process and be synchronised with the SAP Central Design team first. In case this is a requirement for you, please open another issue for this and include the ticket number of the central design ticket there for reference.

[tandan0813]

Hi @Lukas742 Thanks for your help!!