app skeleton

main/ui.py

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+import gi
+from ftplib import FTP
+from properties import get_config, write_config
+
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+status_bar = None
+
+
+def on_about_app(item):
+    builder = Gtk.Builder()
+    builder.add_from_file("editor_ui.glade")
+    dialog = builder.get_object("about_dialog")
+    dialog.run()
+    dialog.destroy()
+
+
+def on_preferences(item):
+    builder = Gtk.Builder()
+    builder.add_from_file("editor_ui.glade")
+    dialog = builder.get_object("settings_dialog")
+    options = get_config()
+    host_field = builder.get_object("host_field")
+    host_field.set_text(options["host"])
+    port_field = builder.get_object("port_field")
+    port_field.set_text(options["port"])
+    login_field = builder.get_object("login_field")
+    login_field.set_text(options["user"])
+    password_field = builder.get_object("password_field")
+    password_field.set_text(options["password"])
+    services_field = builder.get_object("services_field")
+    services_field.set_text(options["services_path"])
+    user_bouquet_field = builder.get_object("user_bouquet_field")
+    user_bouquet_field.set_text(options["user_bouquet_path"])
+    satellites_xml_field = builder.get_object("satellites_xml_field")
+    satellites_xml_field.set_text(options["satellites_xml_path"])
+
+    if dialog.run() == Gtk.ResponseType.OK:
+        options["host"] = host_field.get_text()
+        options["port"] = port_field.get_text()
+        options["user"] = login_field.get_text()
+        options["password"] = password_field.get_text()
+        options["services_path"] = services_field.get_text()
+        options["user_bouquet_path"] = user_bouquet_field.get_text()
+        options["satellites_xml_path"] = satellites_xml_field.get_text()
+        write_config(options)
+    dialog.destroy()
+
+
+def on_connect(item):
+    connect(get_config())
+
+
+def connect(properties):
+    assert isinstance(properties, dict)
+    try:
+        with FTP(properties["host"]) as ftp:
+            ftp.login(user=properties["user"], passwd=properties["password"])
+            status_bar.push(1, ftp.voidcmd("NOOP"))
+            ftp.cwd(properties["services_path"])
+            ftp.retrlines("LIST")
+    except Exception as e:
+        status_bar.remove_all(1)
+        status_bar.push(1, getattr(e, "message", repr(e)))  # Or maybe so: getattr(e, 'message', str(e))
+
+
+def init_ui():
+    handlers = {
+        "on_close_main_window": Gtk.main_quit,
+        "on_about_app": on_about_app,
+        "on_preferences": on_preferences,
+        "on_connect": on_connect
+    }
+    builder = Gtk.Builder()
+    builder.add_from_file("editor_ui.glade")
+    main_window = builder.get_object("main_window")
+    global status_bar
+    status_bar = builder.get_object("status_bar")
+    builder.connect_signals(handlers)
+    main_window.show_all()
+
+
+def start_app():
+    init_ui()
+    Gtk.main()
+
+
+def close_app():
+    Gtk.main_quit()
+
+
+if __name__ == "__main__":
+    start_app()