Ground-up rewrite of the data model. Putting this in the ve2 directory for now so we still have the old code floating around.
Main changes so far in this rewrite:
* Renamed hasChildren() to canHaveChildren()
* Added canHaveGrandchildren()
* Added a new node type TwigNode that can have children but not grandchildren (so all of its children must be LeafNodes)
* Implemented push/pop/shift/unshift as wrappers around splice()
* Renamed getElementType() to getType(). Nodes now take a string as a type, and the element stuff is gone and won't be back
* Removed clearRoot(), replaced it with setRoot( this ) where needed
Change-Id: I23f3bb1b4a2473575e5446e87fdf17af107bacf6
This has some TODOs still but I want to land it now anyway, and fix the
TODOs later.
* Add this.offsetMap which maps each linear model offset to a model tree node
* Refactor createNodesFromData()
** Rename it to buildSubtreeFromData()
** Have it build an offset map as well as a node subtree
** Have it set the root on the fake root node so that when the subtree
is attached to the main tree later, we don't get a rippling root
update all the way down
** Normalize the way the loop processes content, that way adding offsets
for content is easier
* Add rebuildNodes() which uses buildSubtreeFromData() to rebuild stuff
* Use rebuildNodes() in DocumentSynchronizer
* Use pushRebuild() in TransactionProcessor
* Optimize setRoot() for the case where the root is already set correctly
Change-Id: I8b827d0823c969e671615ddd06e5f1bd70e9d54c
This makes it possible to get identical rendering in the editor, but may make other things more complex. The Wikitext serializer is no longer compatible for rendering lists so it's been stubbed out. Also the way the toolbar works with lists is broken, so that's been disabled. The HTML serializer has been fixed to work correctly and no-longer-used styles have been removed.
Change-Id: If156f55068b1f6d229b3fa789164f28b2e3dfc76
To handle replace operations that are not themselves consistent (these
are common, for instance when replacing an opening element in one place,
then replacing the closing element somewhere else), we process
subsequent replace operations inside the first one until things are
balanced again, then issue a single rebuild for the whole thing.
Change-Id: Ide4613f046fabfeeef383138c39e350b1b710033
