Fixes#1052
This implements the about window as a custom window with a view
controller. This lets us implement the proper responder chain so that
our custom close window IBActions do the right thing.
This has an additional benefit that we can easily customize this window
going forward.
Fixes#1018Fixes#1020
This disables the "visibleAtLaunch" configuration in the xib and
manually shows the window when it loads. This lets us carefully control
what happens particularly when a window is full screen (native) and part
of Mission Control.
Previously, the behavior depended on the Settings.app "Prefer tabs
when opening documents" setting, but we didn't handle every behavior
correctly (see #1018 and #1020). I couldn't find a way to robustly
handle all cases because there are no published macOS APIs for
interacting with Mission Control...
Plus, terminals aren't really "documents" so it did confuse at least one
user that Ghostty would follow this configuration. We just incidently
did because we use native tabbing.
This PR takes full control into our own hands. Our behavior is now:
- If a new window is created from a native fullscreen window, the
new window is created into native fullscreen.
- If a new tab is created from a native fullscreen window, the
tab is added to the existing window and does not create a new space.
- If a window or tab is created from a non-fullscreen window, the
existing behaviors remain.
