Dates Example

Example demonstrating a number of date-related widgets.

Widgets include: datetime_selector, date_selector, time_selector and calendar.

Asks the user some date-related questions, and gives a glib assessment of their personality.

Tip

To see this example in action, download it from dates and run:

$ enaml-run dates.enaml

Screenshot

Example Enaml Code

#------------------------------------------------------------------------------
# Copyright (c) 2018, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
""" Example demonstrating a number of date-related widgets.

Widgets include: `datetime_selector`, `date_selector`, `time_selector` and
`calendar`.

Asks the user some date-related questions, and gives a glib assessment of
their personality.

<< autodoc-me >>
"""

# Rename to avoid name clash with attributes
from datetime import (
    time as python_time,
    datetime as python_datetime,
    date as python_date,
    timedelta)

from enaml.layout.api import vbox
from enaml.widgets.api import (
    Window, Container, GroupBox, Form, DateSelector, TimeSelector,
    DatetimeSelector, Label, Field, PushButton, Calendar)

# Some functions to help assess the user.

def is_morning_person(time):
    return time.hour < 8

def is_leo(date):
    return (
        (date.month == 7 and date.day >= 23)
        or (date.month == 8 and date.day <= 22)
        )

def is_recent_peak(datetime):
    return (python_datetime.now() - datetime) < timedelta(days=28)

def is_recent_backup(date):
    return (python_date.today() - date) < timedelta(days=3)

enamldef Main(Window): window:
    title = 'Personality Survey'

    attr wake_up_time: python_time
    attr birthday: python_date
    attr best_moment: python_datetime
    attr last_backup: python_date

    Container:
        constraints = [
            vbox(questions, results)
        ]
        GroupBox: questions:
            title = "Questions"
            constraints = [
                vbox(form, cal)
            ]

            Form: form:
                Label:
                    text = "When do you like to wake up?"
                TimeSelector:
                    time >> wake_up_time
                Label:
                    text = "When's your birthday?"
                DateSelector:
                    date >> birthday
                    minimum = python_date.today() - timedelta(days=125*365)
                    maximum = python_date.today() - timedelta(days=5*365)
                Label:
                    text = "When was the best moment of your life?"
                DatetimeSelector:
                    datetime >> best_moment
                    maximum = python_datetime.now()
                Label:
                    text = "When did you last backup your data?"
            Calendar: cal:
                date >> last_backup
                maximum = python_date.today()

        GroupBox: results:
            title = "Survey Results"
            Label:
                text <<
                    if wake_up_time is None:
                        return ""
                    if is_morning_person(wake_up_time):
                        return  "You are a morning person"
                    return "You are a night owl"
            Label:
                text <<
                    if birthday is None:
                        return ""
                    if is_leo(birthday):
                        return "You are a Leo!"
                    return "You don't believe in astrology."
            Label:
                text <<
                    if best_moment is None:
                        return ""
                    if is_recent_peak(best_moment):
                        return "Congratulations! You are at your peak."
                    return "You are past your peak."
            Label:
                text <<
                    if last_backup is None:
                        return ""
                    if is_recent_backup(last_backup):
                        return "You are a stickler."
                    return "You are careless."