feat(menu): Add a sub menu to set the default app via a long press

preload/menu.py

@@ -90,6 +90,24 @@ def usb_mode(disp):
     os.exit(0)
 
 
+class SubMenu(simple_menu.Menu):
+    timeout = 30.0
+
+    def on_select(self, name, index):
+        print(name)
+        if name == "Make Default":
+            self.disp.clear(color.CHAOSBLUE)
+            self.disp.print("Making", posx=0, posy=20)
+            self.disp.print(self.app.name, posx=0, posy=40)
+            self.disp.print("default", posx=0, posy=60)
+            self.disp.update()
+            import config
+
+            config.set_string("default_app", self.app.path)
+            utime.sleep(1)
+        self.exit()
+
+
 class MainMenu(simple_menu.Menu):
     timeout = 30.0
 
@@ -112,6 +130,14 @@ class MainMenu(simple_menu.Menu):
             utime.sleep(1.0)
             os.exit(1)
 
+    def on_long_select(self, app, index):
+        print("Long press\n")
+        if app.path not in ["main.py", "USB_STORAGE_FLAG"]:
+            # sm = SubMenu(("Make Default", "Fav", "Unfav", "Delete", "Exit"))
+            sm = SubMenu(("Make Default", "Exit", "", ""))
+            sm.app = app
+            sm.run()
+
     def on_timeout(self):
         try:
             f = open("main.py")