Search a user to start a chat

[alfogrillo]

As a user I want to be able to search a user before I start a 1:1 chat.

Designs
Start a chat
No results

Matrix APIs

• User Directory - Search

ACs

• The search feature is part of this screen.
• Search starts as soon as the user writes at least 3 characters
• Ask 5 results to the home server
• If the users delete text, we don't show results if there are less than 3 characters
• The list updates live whenever the user changes the search text
• Cells in the list shows:
  • The avatar image
  • The user's display name
  • The user's matrix identifier
• No other functionality is meant to be implemented as a part of this ticket (eg. taps on any result)
• Suggestions and recents fetching logics will be implemented here.
• Clients should "debounce" calls while the user is typing (0,5 sec of delay)
• Show the "No results" when the server returns zero results (see the related design)

Questions

• Should "debounce" be implemented in the rust layer?
• How many results should we ask to the home server? @amshakal

Tasks

Preview Give feedback

1. Expose user directory search to clients matrix-org/matrix-rust-sdk#1569
   Z-ElementX-Alpha enhancement good first issue +3
   
2. Search a user to start a chat vector-im/element-x-android#95
   T-Enhancement Team: Element X Feature X-Needs-Design X-Needs-Rust +4
   
3. Search a user to start a chat vector-im/element-x-ios#593
   T-Enhancement Team: Element X Feature +2
   
4. Move search users into a dedicated service element-x-ios#767
   T-Enhancement T-Task +2
   

Dependencies

• Expose user directory search to clients matrix-org/matrix-rust-sdk#1569