[Story] Mention a user in message

[VolkerJunginger]

Story

As a user I want to mention an other user in a message so that I can make sure that user might not miss my important message.

Figma link: TBD

Acceptance criteria

In general:

• Only room-members can be mentioned in a room
• One can not mention themself
• If a users have been blocked they cannot be mentioned

Creating a mention

• typing @ + mid into the composer creates a mention (@manuroe is that right?)

Suggesting Users to be mentioned

• Typing "@" + an other letter into the composer opens a view with suggestions for room-members that the user is allowed to mention
• with each letter the suggestions get better
• The suggested users are shown w. avatar and name
• @room mentions all room members
• @room mentions only appear in the suggestions if the user has the right to trigger room notifications
• If the user taps on a suggestion a "mention-pill" is shown in the composer

Size estimate

M

Open Questions

Beta Give feedback

1. Should the @room pill have the room string be localised? I imagine that it should still be triggered by explicitly typing "@room" however i wonder if the pill itself when render can be localised Not required.

Subtasks

Android

Beta Give feedback

1. Mentions: make RTE display user pills view element-x-android#1455
   A-Pills A-Rich-Text-Editor T-Enhancement Z-Labs +4
2. Mentions: User suggestion view in RTE element-x-android#1452
   A-Pills A-Rich-Text-Editor T-Enhancement X-Needs-Design +4
   
3. Mentions: @room mention pill element-x-android#1453
   A-Pills A-Timeline T-Enhancement +3
4. Mentions: Send intentional mentions element-x-android#1591
   A-Composer T-Task +2
   

iOS

Beta Give feedback

1. Mentions: @room mention pill element-x-ios#1829
   A-Pills T-Enhancement +2
   
2. Mentions: User suggestion view in RTE element-x-ios#1826
   A-Pills A-Rich-Text-Editor T-Enhancement X-Needs-Design +4
   
3. Mentions: make RTE display user pills view element-x-ios#1830
   A-Pills A-Rich-Text-Editor T-Enhancement +3
4. Mentions: Fix user suggestion view in expanded mode element-x-ios#1858
   A-Pills A-Rich-Text-Editor O-Occasional S-Major T-Defect X-Needs-Design Z-Schedule +7
   
5. Mentions: add @room mention to the suggestions element-x-ios#1875
   A-Pills A-Rich-Text-Editor T-Enhancement +3
6. Mentions: Send intentional mentions element-x-ios#1914
   T-Task +1

Rust

Beta Give feedback

1. Implement MSC3952: Intentional mentions matrix-org/matrix-rust-sdk#2606
   A-Notification A-Room-List A-Timeline X-Needs-Rust Z-Schedule +5
   
2. Allow clients to send intentional mentions matrix-org/matrix-rust-sdk#2722
   A-Notification A-Room-List A-Timeline X-Needs-Rust Z-Schedule +5
   

RTE

Beta Give feedback

1. MSC 3952: Intentional mentions support, expose an API to get current mentions in RTE matrix-org/matrix-rich-text-editor#848
   A-Rich-Text-Editor Rust T-Enhancement +3
2. [iOS] expose getMentionsState matrix-org/matrix-rich-text-editor#851
   A-Rich-Text-Editor T-Enhancement iOS +3
3. [Android] expose getMentionsState matrix-org/matrix-rich-text-editor#852
   A-Rich-Text-Editor Android T-Enhancement +3

Design

Beta Give feedback

1. User suggestions view design (should account for the expanded case of the RTE, alongside landscape mode)
2. @room pill design

• QA signoff on completion
• Design signoff on completion
• Product signoff on completion

Out of scope

• Known issue: suggestions will be slow to display in large rooms with thousands of users. This is the same problem as loading the room members list screen: Member list in large rooms takes a very long time to load element-x-android#851, Member list in Matrix HQ takes over 7 seconds to load element-x-ios#1360 and the related SDK issue: Performance of Room.members/get_member in large rooms is bad matrix-org/matrix-rust-sdk#1979).

[Velin92]

Should the @room pill have the "room" string be localised? I imagine that it should still be triggered by explicitly typing "@room" (since this is how is interpreted by all the matrix clients) however i wonder if the pill itself, being a different view, should render the word room localised.

@VolkerJunginger

[VolkerJunginger]

you mean @raum. No, seems funny to me.

[Velin92]

Perfect then I'll keep it as @room in the text inside the pill for all languages

[Velin92]

Regarding instead the @room suggestion? In El-iOS it is also referred as "Everyone" but is not localised. Should it be localised? This is the string I am referring to

@VolkerJunginger

[Velin92]

Regarding instead the @room suggestion? In El-iOS it is also referred as "Everyone" but is not localised. Should it be localised? This is the string I am referring to

@VolkerJunginger

Had a chat with @VolkerJunginger about this we decided to try a localised approach.
So if we for example have the app in German, that name will be displayed as "Alle", this means that also looking fror @alle should give you this suggestion.
So botht the string and the suggestion should be localised (of course only if such localisation exists).
@ganfra

[Velin92]

So botht the string and the suggestion should be localised (of course only if such localisation exists). @ganfra

That could be a bit problematic: if the user is using a language that didn't include a translation for this shortcut and then it did after an update, they'll try to type @room again an they won't understand why it's not working, and believe it's broken. Maybe we should try to include both the translated and the original one?

the idea is that @room always works, is the additional @everyone that should be localised. (on legacy El-iOS and El web the @room mention works with both the @room tag and the @everyone tag)

[Velin92]

Also of course @room is not localised since is a default matrix mention.