tree a41febfaa84d08b48e358ab90b65201beda1cbe4
parent 9ac8727ad2fb59d0981bde081770bd3b9a9bf15e
author Ben Rohlfs <brohlfs@google.com> 1638360064 +0100
committer Ben Rohlfs <brohlfs@google.com> 1638377957 +0100

Fix auto-saving of new comment threads

<gr-diff-host> has a sophisticated `_threadsChanged()` method that is
called whenever there is a small change to the comments-model. It
carefully compares thread objects from the model with the existing DOM
elements for these, and creates, updates or removes elements as
necessary.

Since auto-saving of comments was implemented this detection logic was
missing the ability to match the new saved thread object from the model
with the existing "unsaved" DOM element that had triggered the
auto-save, because there is no rootId to match.

We are adding some logic for matching up the newly saved threads with
the unsaved elements.

We are also making sure that <gr-diff-host> never removes any unsaved
comments that are currently being edited.

Change-Id: I0a31dad3f2f55c6c18b8dccc775cb28dfd2e3b42