Library: Port 'Overlay Split View' to Python (#815)

Author: gregorni

src/Library/demos/Overlay Split View/main.py

@@ -0,0 +1,17 @@
+import gi
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk
+import workbench
+
+split_view = workbench.builder.get_object("split_view")
+start_toggle = workbench.builder.get_object("start_toggle")
+end_toggle = workbench.builder.get_object("end_toggle")
+
+start_toggle.connect(
+    "toggled", lambda _toggle: split_view.set_sidebar_position(Gtk.PackType.START)
+)
+
+end_toggle.connect(
+    "toggled", lambda _toggle: split_view.set_sidebar_position(Gtk.PackType.END)
+)