This aligns the Windows platform implementation with a code style
similar to macOS platform, eliminating most of the `Cell`s and
`Mutex`es. This adjustment facilitates potential future porting to a
multi-threaded implementation if required.
Overall, this PR made the following changes: it segregated all member
variables in `WindowsPlatform` and `WindowsWindow`, grouping together
variables that remain constant throughout the entire app lifecycle,
while placing variables that may change during app runtime into
`RefCell`.
Edit:
During the code refactoring process, a bug was also fixed.
**Before**:
Close window when file has changed, nothing happen:
https://github.com/zed-industries/zed/assets/14981363/0bcda7c1-808c-4b36-8953-a3a3365a314e
**After**:
Now `should_close` callback is properly handled
https://github.com/zed-industries/zed/assets/14981363/c8887b72-9a0b-42ad-b9ab-7d0775d843f5
Release Notes:
- N/A
张小白
c260f7d5ac