## Type of change
- [x] Feature
- [ ] Bugfix
- [ ] Technical
- [ ] Other :
## Content
This PR consists of several macro-blocks separated by path/package:
- `messages.impl.mediaplayer` : Global (room-wide) media player, now used only for voice messages but could be used for all media within EX in the future. It is backed by media3's exoplayer. Currently not unit-tested because mocking exoplayer is not trivial.
- `messages.impl.voicemessages.play` : Business logic of a timeline voice message. This is all the logic that manages the voice message bubble.
- `messages.impl.timeline.model` & `messages.impl.timeline.factories`: Timeline code that takes care of creating the `content` object for voice messages.
- `messages.impl.timeline.components` : The actual View composable that shows the UI inside a voice message bubble.
All the rest is just small related changes that must be done here and there in existing code.
From a high level perspective this is how it works:
- Voice messages are unlike other message bubbles because they carry state (i.e. playing, downloading...) so they have a Presenter managing this state.
- Media content (i.e. the ogg file) of a voice message is downloaded from the rust SDK on first play then stored in a voice messages cache (see the `VoiceMessageCache` class, it is just a subdirectory in the app's cacheDir which is indexed by the matrix content uri). All further play attempts are done from the cache without hitting the rust SDK anymore.
- Playback of the ogg file is handled with the `VoiceMessagePlayer` class which is basically a "view" of the global `MediaPlayer` that allow the voice message to only see the media player state belonging to its media content.
- Drawing of the waveform is done with an OSS library wrapped in the `WaveformProgressIndicator` composable.
Known issues:
- The waveform has no position slider.
- The waveform (and together with it the whole message bubble) is taller than the actual Figma design.
- Swipe to reply for voice messages is disabled to avoid conflict with the audio scrubbing gesture (to reply to a voice message you have to use the long press menu).
- The loading indicator is always shown (there is no delay).
- Voice messages don't stop playing when redacted.
## Motivation and context
https://github.com/vector-im/element-meta/issues/2083
## Screenshots / GIFs
Provided by Screenshot tests in the PR itself.
* Integrate Element Call with widget API.
- Add `appconfig` module and extract constants that can be overridden in forks there.
- Add an Element Call feature flag, disabled by default.
- Refactor the whole `ElementCallActivity`, move most logic out of it.
- Integrate with the Rust Widget Driver API (note the Rust SDK version used in this PR lacks some needed changes to make the calls actually work).
- Handle calls differently based on `CallType`.
- Add UI to create/join a call.
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Co-authored-by: ElementBot <benoitm+elementbot@element.io>
- Add full screen mode for the rich text editor (RTE). When text formatting options are enabled, the editor can be dragged to full screen.
- Remove `ConstraintLayout` from `textcomposer` module, now made much simpler now the RTE supports being called in multiple layouts matrix-org/matrix-rich-text-editor#822
- Part of vector-im/element-meta#1973
- Includes design from #1315
- Fixes#1293 (through new layout)
- Fixes#1394 (through inclusion of matrix-org/matrix-rich-text-editor#824)
- Fixes#1259 (through inclusion of matrix-org/matrix-rich-text-editor#820)
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Co-authored-by: ElementBot <benoitm+elementbot@element.io>
- Shows edit/end poll buttons when the user is the creator of the poll.
- Only the end poll button is wired right now as there is no "edit poll" screen yet.
* Add link functionality to rich text editor
* Add 'list dialog' component compound design library
* Add 'text field list item' component to compound design library
ElementBot