Reorganizing

old/ex1.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+
+import curses
+from curses import panel
+
+
+class Menu(object):
+    def __init__(self, items, stdscreen):
+        self.window = stdscreen.subwin(0, 0)
+        self.window.keypad(1)
+        self.panel = panel.new_panel(self.window)
+        self.panel.hide()
+        panel.update_panels()
+
+        self.position = 0
+        self.items = items
+        self.items.append(("exit", "exit"))
+
+    def navigate(self, n):
+        self.position += n
+        if self.position < 0:
+            self.position = 0
+        elif self.position >= len(self.items):
+            self.position = len(self.items) - 1
+
+    def display(self):
+        self.panel.top()
+        self.panel.show()
+        self.window.clear()
+
+        while True:
+            self.window.refresh()
+            curses.doupdate()
+            for index, item in enumerate(self.items):
+                if index == self.position:
+                    mode = curses.A_REVERSE
+                else:
+                    mode = curses.A_NORMAL
+
+                msg = "%d. %s" % (index, item[0])
+                self.window.addstr(1 + index, 1, msg, mode)
+
+            key = self.window.getch()
+
+            if key in [curses.KEY_ENTER, ord("\n")]:
+                if self.position == len(self.items) - 1:
+                    break
+                else:
+                    self.items[self.position][1]()
+
+            elif key == curses.KEY_UP:
+                self.navigate(-1)
+
+            elif key == curses.KEY_DOWN:
+                self.navigate(1)
+
+        self.window.clear()
+        self.panel.hide()
+        panel.update_panels()
+        curses.doupdate()
+
+
+class MyApp(object):
+    def __init__(self, stdscreen):
+        self.screen = stdscreen
+        curses.curs_set(0)
+
+        submenu_items = [("beep", curses.beep), ("flash", curses.flash)]
+        submenu = Menu(submenu_items, self.screen)
+
+        main_menu_items = [
+            ("beep", curses.beep),
+            ("flash", curses.flash),
+            ("submenu", submenu.display),
+        ]
+        main_menu = Menu(main_menu_items, self.screen)
+        main_menu.display()
+
+
+if __name__ == "__main__":
+    curses.wrapper(MyApp)