Restructure for better usability

gui/popups/popups.py

@@ -0,0 +1,63 @@
+from typing import Callable
+from kivy.uix.popup import Popup
+from kivy.lang import Builder
+
+from lib.com import ComSuperClass
+
+
+# Just an empty function
+def empty_func():
+    pass
+
+#          ╭────────────────────────────────────────────────╮
+#          │                     Popups                     │
+#          ╰────────────────────────────────────────────────╯
+# Below, you can find various popups with various designs that can be used in the app
+class QuitPopup(Popup):
+    def __init__(self, com: ComSuperClass, **kw):
+        self._com = com;
+        super().__init__(**kw)
+
+    def quit(self):
+        self._com.close()
+
+class SingleRowPopup(Popup):
+    def open(self, message, *_args, **kwargs):
+        self.ids.msg.text = message
+        return super().open(*_args, **kwargs)
+
+class DualRowPopup(Popup):
+    def open(self, title: str, message: str, *_args, **kwargs):
+        self.ids.msg_title.text = title
+        self.ids.msg_body.text = message
+        return super().open(*_args, **kwargs)
+
+class LargeTrippleRowPopup(Popup):
+    def open(self, title: str, message: str, details: str, *_args, **kwargs):
+        self.ids.msg_title.text = title
+        self.ids.msg_body.text = message
+        self.ids.msg_extra.text = details
+        return super().open(*_args, **kwargs)
+
+class TwoActionPopup(Popup):
+    def open(self, 
+             message: str,
+             button_one: str,
+             action_one: Callable[[], None],
+             button_two: str = 'Ok',
+             action_two: Callable[[], None] = empty_func,
+             *_args,
+             **kwargs
+        ):
+        self.ids.msg.text = message
+        self.ids.btn1.text = button_one
+        self.ids.btn2.text = button_two
+        self.action_one = action_one
+        self.action_two = action_two
+        return super().open(*_args, **kwargs)
+
+
+# Load the design file for this screen (.kv files)
+# The path has to be relative to root of the app, i.e. where the biogascontrollerapp.py 
+# file is located
+Builder.load_file('./gui/popups/popups.kv')