To handle replies in the diff viewer, there are two key changes that must be made:

1. We must have a way of managing drafts for all replies, so that user can publish or discard the replies. The Unified Review Banner project is responsible for this.
2. Instead of just showing replies when hovering over a comment flag, we need to actually present UI for viewing threads and replying, with all the reply functionality of the review request page.

This document tackles the second change through a new comments popup.

Comments Popup

Existing versions of Review Board show a simple list of replies as a tooltip when hovering over comment flags (in diffs and file attachments). This is going to be replaced by a more advanced popup box. This will show any and all comments represented by that comment flag.

This is a miniature version of what you might see in a review on the review request page, but limited to this particular area being commented on. In it, you'll find the following:

• A header showing some details on the author, time, and locations. The header color will be our standard blue for published comments and green for draft comments. A callout arrow on the side points to the area commented on (we have LessCSS mixins to help create these).
• An issue banner, if the comment opened an issue, allowing it to be resolved right here.
• The contents of the comment.
• Any replies made to that comment.

Comment Flag Hover Behavior