Add missing file

cozy/ui/widgets/first_import_button.py

@@ -0,0 +1,28 @@
+from gi.repository import Adw, Gtk, GObject
+
+from .storages import ask_storage_location
+
+from typing import Callable
+
+
+@Gtk.Template.from_resource('/com/github/geigi/cozy/first_import_button.ui')
+class FirstImportButton(Gtk.Button):
+    __gtype_name__ = "FirstImportButton"
+
+    stack: Gtk.Stack = Gtk.Template.Child()
+    label: Adw.ButtonContent = Gtk.Template.Child()
+    spinner: Gtk.Spinner = Gtk.Template.Child()
+
+    def __init__(self, callback: Callable[[str], None], initial_folder: str) -> None:
+        super().__init__()
+
+        self._callback = callback
+        self._initial_folder = initial_folder
+
+        self.connect("clicked", self._on_clicked)
+
+    def _on_clicked(self, *_) -> None:
+        ask_storage_location(self._callback, self._initial_folder)
+        self.set_sensitive(False)
+        self.spinner.set_spinning(True)
+        self.stack.set_visible_child(self.spinner)