[Story] Add a caption when sending a media file

[pixlwave]

Description

• As a user
• I want to be able to include a caption when sending some media
• So that I can add context to the media in the same message.

Acceptance criteria

• A composer is shown at the bottom of the media preview screen.
• Its caption is optional: when nothing is entered, no caption will be added to the media.
• Entering formatting using markdown should work as it does in the regular composer.

Size estimate

None

Dependencies

• None

Out of scope

• As EX doesn't (yet) support sending multiple pieces of media, we don't need to consider what would happen in this instance.
• We don't need to use the RTE to create formatted captions.

Open questions

Questions

Beta Give feedback

No tasks being tracked yet.

Subtasks

Android

Beta Give feedback

1. Add captions to sent image and video files element-x-android#2573
   O-Occasional S-Minor T-Enhancement X-Needs-Design +4
2. Send caption with file element-x-android#3884
   +0

iOS

Beta Give feedback

1. [Task] Add a caption when sending a media file element-x-ios#3508
   T-Task +1

Rust

Beta Give feedback

No tasks being tracked yet.

Other

Beta Give feedback

No tasks being tracked yet.