login and registration screen

src/justgetit/app.py

@@ -0,0 +1,40 @@
+import toga
+from toga.style.pack import COLUMN, ROW, CENTER, START, END
+from toga.style import Pack
+import requests
+from justgetit.constants import *
+from justgetit.login import Login
+from justgetit.register import Register
+
+
+class JustEatIt(toga.App):
+    login_screen = toga.Box()
+    register_screen = toga.Box()
+
+
+    def goto_next_page(self, widget):
+        """
+        ask app to activate a next page, id of the page is in the id of the widget
+        
+        :param widget: the widget that called this function
+        """
+        print(f"action 6 {widget.id}")
+        if widget.id == 'register':
+            self.main_window.content = self.register_screen
+        elif widget.id =='login':
+            self.main_window.content = self.login_screen
+
+
+    def startup(self):
+        self.login_screen = Login(navigate_to=self.goto_next_page)
+        self.register_screen = Register(navigate_to=self.goto_next_page)
+
+        self.main_window = toga.MainWindow(title=self.formal_name, size=(SCREENWIDTH, SCREENHEIGHT))
+        self.main_window.content = self.register_screen
+        self.main_window.show()
+
+
+
+
+def main():
+    return JustEatIt()