Multi frame asciimatics

multi_frame.py

from asciimatics.event import KeyboardEvent
from asciimatics.widgets import Frame, Layout, MultiColumnListBox, Widget, Label, TextBox
from asciimatics.scene import Scene
from asciimatics.screen import Screen
from asciimatics.exceptions import ResizeScreenError, StopApplication, NextScene
import sys


class MainFrame(Frame):
    def __init__(self, screen, has_border=True, name='MainFrame'):
        super(MainFrame, self).__init__(screen, screen.height, screen.width, has_border=has_border,
                                        name=name, can_scroll=False)

    def process_event(self, event):
        if isinstance(event, KeyboardEvent):
            print(f"Processing key press {event.key_code}")
            if event.key_code in [ord('q'), ord('Q'), Screen.ctrl("c")]:
                raise StopApplication("User quit")
            elif event.key_code in [ord('f'), ord('F')]:
                raise NextScene('First')
            elif event.key_code in [ord('s'), ord('S')]:
                raise NextScene('Second')


class FirstFrame(MainFrame):
    def __init__(self, screen):
        super(FirstFrame, self).__init__(screen,
                                         screen.height,
                                         screen.width)
        layout = Layout([1], fill_frame=True)
        self.add_layout(layout)
        layout.add_widget(Label("Header"))
        layout.add_widget(Label("Body First Frame"))
        layout.add_widget(Label("Footer"))
        self.fix()


class SecondFrame(MainFrame):
    def __init__(self, screen):
        super(SecondFrame, self).__init__(screen,
                                          screen.height,
                                          screen.width)
        layout = Layout([1], fill_frame=True)
        self.add_layout(layout)
        layout.add_widget(Label("Header"))
        layout.add_widget(Label("Body Second Frame"))
        layout.add_widget(Label("Footer"))
        self.fix()


def demo(screen, scene):
    scenes = [
        Scene([FirstFrame(screen)], -1, name="First"),
        Scene([SecondFrame(screen)], -1, name="Second")
    ]

    screen.play(scenes, stop_on_resize=True, start_scene=scene, allow_int=True)


last_scene = None
while True:
    try:
        Screen.wrapper(demo, catch_interrupt=True, arguments=[last_scene])
        sys.exit(0)
    except ResizeScreenError as e:
        last_scene = e.scene