#!/usr/bin/env python3

import curses
from curses import panel
from curses import wrapper





class Menu(object):
    def __init__(self, items, stdscreen):
#        self.window = stdscreen.subwin(0, 0)
        self.window = stdscreen
        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()
        self.window.box()

        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 = "%s" % (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 printS(self):
        print("Yep, works")


    def __init__(self, screen):
        curses.curs_set(0)
        curses.init_color(0,0,0,0)
        screen.box()

        Cols22 = (curses.COLS - 2) * 0.22   # Take 2 characters out from the boarders and then calculate 22%
        Cols22 = int(Cols22)                # Ditch the fractional part

        Cols56 = (curses.COLS - 2) * 0.56   # Take 2 characters out from the boarders and then calculate 56%
        Cols56 = int(Cols56) + 1            # Ditch the fractional part and add 1

        Lines = (curses.LINES - 2) * 0.95   # Take 2 characters out from the boarders and then calculate 56%
        Lines = int(Lines)                  # Ditch the fractional part



#            title = "Sparks-Skraps" + "  COLS -> " + str(curses.COLS) + "   LINES -> " + str(Cols56)
        title = "Sparks-Skraps"
        titlePos = (curses.COLS / 2) - (len(title) / 2)

        screen.addstr(1, int(titlePos), title, 2)
        screen.refresh()


        components = curses.newwin(Lines,Cols22,3,1)
#            components.box()
#            components.addstr(1, 1, "precious components")
        components.refresh()

        parts = curses.newwin(Lines, Cols22, 3, 1+Cols22)
        parts.box()
        parts.addstr(1, 1, "My precious parts")
        parts.refresh()

        info = curses.newwin(Lines, Cols56, 3, 1+Cols22*2)
        info.box()
        info.addstr(1, 1, "My precious info")
        info.refresh()


#            c = screen.getch()

        submenu_items = [("Resistors", curses.beep), ("Capacitors", curses.beep), ("Coils", curses.flash), ("IC\'s", curses.flash)]
        submenu = Menu(submenu_items, components)
        submenu.display()





if __name__ == "__main__":
    curses.wrapper(MyApp)