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#!/usr/bin/env python3
import re
from asciimatics.effects import Julia, Clock
from asciimatics.widgets import Frame, TextBox, Layout, Label, Divider, Text, \
CheckBox, RadioButtons, Button, PopUpDialog
from asciimatics.scene import Scene
from asciimatics.screen import Screen
from asciimatics.exceptions import ResizeScreenError, NextScene, StopApplication, \
InvalidFields
import sys
# Initial data for the form
form_data = {
"TA": ["Hello world!", "How are you?"],
"TB": "alphabet",
"TC": "123",
"TD": "a@b.com",
"Things": 2,
"CA": False,
"CB": True,
"CC": False,
}
class DemoFrame(Frame):
def __init__(self, screen):
super(DemoFrame, self).__init__(screen,
int(screen.height * 2 // 3),
int(screen.width * 2 // 3),
data=form_data,
has_shadow=True,
name="My Form")
layout = Layout([1, 18, 1])
self.add_layout(layout)
self._reset_button = Button("Reset", self._reset)
layout.add_widget(Label("Group 1:"), 1)
layout.add_widget(TextBox(5,
label="My First Box:",
name="TA",
on_change=self._on_change), 1)
layout.add_widget(
Text(label="Alpha:",
name="TB",
on_change=self._on_change,
validator="^[a-zA-Z]*$"), 1)
layout.add_widget(
Text(label="Number:",
name="TC",
on_change=self._on_change,
validator="^[0-9]*$"), 1)
layout.add_widget(
Text(label="Email:",
name="TD",
on_change=self._on_change,
validator=self._check_email), 1)
layout.add_widget(Divider(height=2), 1)
layout.add_widget(Label("Group 2:"), 1)
layout.add_widget(RadioButtons([("Option 1", 1),
("Option 2", 2),
("Option 3", 3)],
label="A Longer Selection:",
name="Things",
on_change=self._on_change), 1)
layout.add_widget(CheckBox("Field 1",
label="A very silly long name for fields:",
name="CA",
on_change=self._on_change), 1)
layout.add_widget(
CheckBox("Field 2", name="CB", on_change=self._on_change), 1)
layout.add_widget(
CheckBox("Field 3", name="CC", on_change=self._on_change), 1)
layout.add_widget(Divider(height=3), 1)
layout2 = Layout([1, 1, 1])
self.add_layout(layout2)
layout2.add_widget(self._reset_button, 0)
layout2.add_widget(Button("View Data", self._view), 1)
layout2.add_widget(Button("Quit", self._quit), 2)
self.fix()
def _on_change(self):
changed = False
self.save()
for key, value in self.data.items():
if key not in form_data or form_data[key] != value:
changed = True
break
self._reset_button.disabled = not changed
def _reset(self):
self.reset()
raise NextScene()
def _view(self):
# Build result of this form and display it.
try:
self.save(validate=True)
message = "Values entered are:\n\n"
for key, value in self.data.items():
message += "- {}: {}\n".format(key, value)
except InvalidFields as exc:
message = "The following fields are invalid:\n\n"
for field in exc.fields:
message += "- {}\n".format(field)
self._scene.add_effect(
PopUpDialog(self._screen, message, ["OK"]))
def _quit(self):
self._scene.add_effect(
PopUpDialog(self._screen,
"Are you sure?",
["Yes", "No"],
on_close=self._quit_on_yes))
@staticmethod
def _check_email(value):
m = re.match(r"^[a-zA-Z0-9_\-.]+@[a-zA-Z0-9_\-.]+\.[a-zA-Z0-9_\-.]+$",
value)
return len(value) == 0 or m is not None
@staticmethod
def _quit_on_yes(selected):
# Yes is the first button
if selected == 0:
raise StopApplication("User requested exit")
class ClockFrame(Frame):
def __init__(self, screen, x, y):
super(ClockFrame, self).__init__(screen, 13, 26,
name="Clock",
has_shadow=True,
x=x, y=y)
self.add_effect(Clock(self._canvas, 13, 7, 7, Screen.COLOUR_BLUE))
self.fix()
def demo(screen, scene):
scenes = []
effects = [
Julia(screen),
ClockFrame(screen, 0, 0),
ClockFrame(screen, screen.width - 26, 0),
ClockFrame(screen, 0, screen.height - 13),
ClockFrame(screen, screen.width - 26, screen.height - 13),
DemoFrame(screen),
]
scenes.append(Scene(effects, -1))
screen.play(scenes, stop_on_resize=True, start_scene=scene)
last_scene = None
while True:
try:
Screen.wrapper(demo, catch_interrupt=False, arguments=[last_scene])
sys.exit(0)
except ResizeScreenError as e:
last_scene = e.scene
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