It's needed for the fix for T303396 to work correctly (in the case
where there's exactly 1 thread item on the page), and for the
highlight improvements in Iadbf83e02801fd9bd6336c84015994ee2819ce51.
Change-Id: I2b2f5535ebbf792910133622a271ac1491c74de6
Goal:
-----
Finishing the work from Iadb7757debe000025e52770ca51ebcf24ca8ee66
by changing CommentParser::parse() to return a data object, instead of
the whole parser.
Changes:
--------
ThreadItemSet.php:
ThreadItemSet.js:
* New data class to access the results of parsing a discussion. Most
methods and properties are moved from CommentParser with no changes.
CommentParser.php:
Parser.js:
* parse() returns a new ThreadItemSet.
* Remove methods moved to ThreadItemSet.
* Placeholder headings are generated slightly differently, as we process
things in a different order.
* Grouping threads and computing IDs/names is no longer lazy. We always
needed IDs/names anyway.
* computeId() explicitly uses a ThreadItemSet to check the existing IDs
when de-duplicating.
controller.js:
* Move the code for turning some nodes annotated by CommentFormatter
into a ThreadItemSet (previously a Parser) from controller#init to
ThreadItemSet.static.newFromAnnotatedNodes, and rewrite it to handle
assigning parents/replies and recalculating legacy IDs more nicely.
* mw.dt.pageThreads is now a ThreadItemSet.
Change-Id: I49bfe019aa460651447fd383f73eafa9d7180a92
