Commit Graph

4 Commits

Author SHA1 Message Date
Damien Elmes
12597e1094 support undo of filtered deck build/empty 2021-03-24 12:56:06 +10:00
Damien Elmes
0331d8b588 make reposition undoable 2021-03-19 19:45:21 +10:00
Damien Elmes
0c59c8b591 fix a bunch of qt typing issues uncovered by the following commit 2021-03-19 19:45:21 +10:00
Damien Elmes
6b0fe4b381 undoable ops now return changes directly; add new *_ops.py files
- Introduced a new transact() method that wraps the return value
in a separate struct that describes the changes that were made.
- Changes are now gathered from the undo log, so we don't need to
guess at what was changed - eg if update_note() is called with identical
note contents, no changes are returned. Card changes will only be set
if cards were actually generated by the update_note() call, and tag
will only be set if a new tag was added.
- mw.perform_op() has been updated to expect the op to return the changes,
or a structure with the changes in it, and it will use them to fire the
change hook, instead of fetching the changes from undo_status(), so there
is no risk of race conditions.
- the various calls to mw.perform_op() have been split into separate
files like card_ops.py. Aside from making the code cleaner, this works
around a rather annoying issue with mypy. Because we run it with
no_strict_optional, mypy is happy to accept an operation that returns None,
despite the type signature saying it requires changes to be returned.
Turning no_strict_optional on for the whole codebase is not practical
at the moment, but we can enable it for individual files.

Still todo:
- The cursor keeps moving back to the start of a field when typing -
we need to ignore the refresh hook when we are the initiator.
- The busy cursor icon should probably be delayed a few hundreds ms.
- Still need to think about a nicer way of handling saveNow()
- op_made_changes(), op_affects_study_queue() might be better embedded
as properties in the object instead
2021-03-19 19:45:21 +10:00