reactions: Add sheet to view who reracted to a message.

[chimnayajith]

Description

This pull request introduces a Reaction List sheet which can be accessed from either the context menu or by long pressing the reaction chips. Currently the app shows who reacted when there are up to 3 of them. But once there are more, we just show counts, and the user may want to see specifically who left the reactions.

Related Issues

Closes #740

Screenshots

[chrisbobbe]

Thanks! This PR needs tests.

Also, please reorder the two commits, so the commit that adds the icon comes first. That way the icon will be available for the commit that adds the feature.

[chimnayajith]

@chrisbobbe I've reordered the commits and written the tests for the same. Please take a look. Thank you.

[chrisbobbe]

Thanks! Comments below from a partial review.

Also, a question for you 🙂: what happens if you're looking at the tab for a particular reaction, and then the last vote for that reaction is removed?

[chimnayajith]

I’ve addressed all the requested changes and marked them as resolved.

As per the conversation here, I’ve implemented the live UI using the MessgeListView getter .

As for the question:

What happens if you're viewing the tab for a particular reaction, and then the last vote for that reaction is removed?

Currently, when the last vote for a reaction is removed, the corresponding tab disappears, and the view switches to the previous tab. If there are no remaining reactions, a message saying 'No reactions yet' is shown. Does this behavior seem appropriate?

[chrisbobbe]

Currently, when the last vote for a reaction is removed, the corresponding tab disappears, and the view switches to the previous tab. If there are no remaining reactions, a message saying 'No reactions yet' is shown. Does this behavior seem appropriate?

Yes, that sounds reasonable. Thanks for explaining!