Add a link for viewing deleted file content.
Review Request #7796 — Created Dec. 3, 2015 and submitted — Latest diff uploaded
In the diff viewer, it's often useful to evaluate whether or not it was
right to remove a file. Currently, we instead see the message:This file was deleted. The content cannot be displayed.
This change will make it possible to view deleted file content by
providing a clickable link that is labelled "Show content.". An event
listener will requeue the corresponding diff file, where eventually a
GET request ending in the following will be made:fragment/<FileDiffID>/?<OtherQueryStringPairs>&show-deleted=1
To accomplish this without running into any potential caching issues, we
show_deletedflag to the ETag of the corresponding diff file.
- Ran and passed all relevant reviewboard unit tests.
- Manually verified that deleted files could be correctly displayed on
Chrome and Firefox without triggering a full page reload, and that
diff files were cached correctly.