- Drag and drop, hidden, and so on now live on on the `Layout` trait,
which helps make the logic less of a hassle to support (these methods
are almost always guaranteed to exist on any view type, and it's
easier to just noop them on a specific view if need be).
- Begin reworking auto-drop-remove-from-superview logic by including an
`is_handle` flag on `View`; will need to extend this work to others.
- Adds a new `ObjcProperty` type, which wraps our Objective-C objects in
a Rust-backed Rc/Refcell combo. This in general makes understanding
reference counting/storage more digestable when reading through the
codebase and leans more on Rust to do its thing than the Objective-C
runtime.
- Most widgets that need to implement `Layout` now only need to provide
a slot for running a handler with the underlying node.
- Further documentation work ongoing.
- Anchors are now enums, which help in debugging constraint issues.
- Enum types that are acceptable for constraint generation are now
matched at runtime, and provide better error messages if a constraint
can't be satisfied and crashes the app.
- `left` and `right` anchors are now supported on all widgets, fixing an
oversight from early iterations of the framework.
- Reduces `unsafe` usage by a decent amount when setting constraint
pointers for widget types.
- Reconfigured subclass creation, as there was a
subtle-but-big-when-it-hit bug in the prior method where bridge
callbacks would lose context of the appropriate delegate when calling
the trait method. The new approach found in `src/foundation/class.rs`
maps and caches subclass creation, and subclasses are now more
apparent when debugging from the Objective-C side as we can carry
their intended name/usage through. Not applied to all yet, but
eventually.
- Cleaned up a number of linter warnings that had grown over time.
- Delegate traits now require an associated const `NAME`, which is used
for subclass creation.
- (macOS) Toolbars now supported setting selected items, which is
typically used in preferences screens.
- (macOS) Windows now support setting the toolbar display style. On Big
Sur, this works as intended - it's a noop on older OS's that don't
support it.
- Support for system icons for macOS preferences windows.
Still a bit to go to flesh this all out, but it's getting there - at
which point then iOS supoort can be folded in easier.
