Add Display additional users in a popover when there are more than 4 users

[KimKyuHoi]

What this PR does / why we need it?

This PR enhances the user experience by implementing a feature that displays additional users in a popover when there are more than 4 users displayed.

Any background context you want to provide?

Currently, when there are more than 4 users to be displayed, the UI becomes cluttered. To address this issue, this PR introduces a popover functionality that shows the remaining users when there are more than 4 present, providing a cleaner and more organized interface.

What are the relevant tickets?

Fixes #139

Checklist

• Added relevant tests or not required
• Didn't break anything

A bit more information would be helpful to complete the PR.

Summary by CodeRabbit

• New Features

  • Introduced a popover to display additional users when more than four are present, enhancing user interaction and interface clarity.

• Improvements

  • Enhanced the user presence visualization by integrating new elements from Material-UI, providing a cleaner and more informative experience.

[CLAassistant]

All committers have signed the CLA.

[coderabbitai]

Walkthrough

The recent updates to the DocumentHeader component enhance user interaction by introducing a popover for displaying additional users when more than four are present. Utilizing Material-UI components, the implementation allows users to view hidden avatars in a streamlined manner, improving the overall clarity and engagement of the user presence feature.

Changes

Files	Change Summary
frontend/src/components/headers/DocumentHeader.tsx	Added functionality for a popover to show additional user avatars. Introduced state management for the popover, including open/close handlers, enhancing user experience by displaying hidden users in a clear format.

Poem

In the header where users meet,
A popover dances, oh so sweet!
Four friends in view, and more to share,
Click to see who’s lurking there!
With avatars bright, the interface shines,
A joyful update, where presence aligns! 🐇✨

---

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[coderabbitai]

Actionable comments posted: 0

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between e1cebe0 and 0a74d32.

Files selected for processing (1)

• frontend/src/components/headers/DocumentHeader.tsx (6 hunks)

Additional comments not posted (4)

frontend/src/components/headers/DocumentHeader.tsx (4)

12-17: New imports for popover functionality.

The new imports from Material-UI are necessary for the popover feature.

---

53-53: New state variable for popover anchor element.

The state variable anchorEl is correctly initialized with useState<HTMLElement | null>(null).

---

99-106: Popover handler functions.

The handler functions handleOpenPopover and handleClosePopover correctly manage the popover's anchor element.

---

Line range hint 152-200:
Popover rendering logic.

The popover rendering logic is correctly implemented, and the hiddenAvatars variable correctly slices the presence list to get the additional users.

[devleejb]

Thank you for your contribution.