Add datetime and time pickers

ipywidgets/widgets/__init__.py

@@ -15,6 +15,8 @@
 from .widget_int import IntText, BoundedIntText, IntSlider, IntProgress, IntRangeSlider, Play, SliderStyle
 from .widget_color import ColorPicker
 from .widget_date import DatePicker
+from .widget_datetime import DatetimePicker
+from .widget_time import TimePicker
 from .widget_output import Output
 from .widget_selection import RadioButtons, ToggleButtons, ToggleButtonsStyle, Dropdown, Select, SelectionSlider, SelectMultiple, SelectionRangeSlider
 from .widget_selectioncontainer import Tab, Accordion, Stacked

ipywidgets/widgets/tests/test_datetime_serializers.py

@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+# Copyright (c) Vidar Tonaas Fauske.
+# Distributed under the terms of the Modified BSD License.
+
+import pytest
+
+import datetime
+import pytz
+
+from traitlets import TraitError
+
+from ..trait_types import (
+    time_to_json,
+    time_from_json,
+    datetime_to_json,
+    datetime_from_json,
+)
+
+
+def test_time_serialize_none():
+    assert time_to_json(None, None) == None
+
+
+def test_time_serialize_value():
+    t = datetime.time(13, 37, 42, 7000)
+    assert time_to_json(t, None) == dict(
+        hours=13, minutes=37, seconds=42, milliseconds=7
+    )
+
+
+def test_time_deserialize_none():
+    assert time_from_json(None, None) == None
+
+
+def test_time_deserialize_value():
+    v = dict(hours=13, minutes=37, seconds=42, milliseconds=7)
+    assert time_from_json(v, None) == datetime.time(13, 37, 42, 7000)
+
+
+def test_datetime_serialize_none():
+    assert datetime_to_json(None, None) == None
+
+
+def test_datetime_serialize_value():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7000, pytz.utc)
+    assert datetime_to_json(t, None) == dict(
+        year=2002,
+        month=1,  # Months are 0-based indices in JS
+        date=20,
+        hours=13,
+        minutes=37,
+        seconds=42,
+        milliseconds=7,
+    )
+
+
+def test_datetime_serialize_non_utz():
+    # Non-existant timezone, so it wil never be the local one:
+    tz = pytz.FixedOffset(42)
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7000, tz)
+    assert datetime_to_json(t, None) == dict(
+        year=2002,
+        month=1,  # Months are 0-based indices in JS
+        date=20,
+        hours=12,
+        minutes=55,
+        seconds=42,
+        milliseconds=7,
+    )
+
+
+def test_datetime_deserialize_none():
+    assert datetime_from_json(None, None) == None
+
+
+def test_datetime_deserialize_value():
+    tz = pytz.FixedOffset(42)
+    v = dict(
+        year=2002,
+        month=1,  # Months are 0-based indices in JS
+        date=20,
+        hours=13,
+        minutes=37,
+        seconds=42,
+        milliseconds=7,
+    )
+    assert datetime_from_json(v, None) == datetime.datetime(
+        2002, 2, 20, 14, 19, 42, 7000, tz
+    )

ipywidgets/widgets/tests/test_widget_datetime.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import pytest
+
+import datetime
+
+import pytz
+from traitlets import TraitError
+
+from ..widget_datetime import DatetimePicker
+
+
+def test_time_creation_blank():
+    w = DatetimePicker()
+    assert w.value is None
+
+
+def test_time_creation_value():
+    t = datetime.datetime.now(pytz.utc)
+    w = DatetimePicker(value=t)
+    assert w.value is t
+
+
+def test_time_validate_value_none():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(1442, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(2056, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(value=t, min=t_min, max=t_max)
+    w.value = None
+    assert w.value is None
+
+
+def test_time_validate_value_vs_min():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(2019, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(2056, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(min=t_min, max=t_max)
+    w.value = t
+    assert w.value.year == 2019
+
+
+def test_time_validate_value_vs_max():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(1664, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(1994, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(min=t_min, max=t_max)
+    w.value = t
+    assert w.value.year == 1994
+
+
+def test_time_validate_min_vs_value():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(2019, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(2056, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(value=t, max=t_max)
+    w.min = t_min
+    assert w.value.year == 2019
+
+
+def test_time_validate_min_vs_max():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(2112, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(2056, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(value=t, max=t_max)
+    with pytest.raises(TraitError):
+        w.min = t_min
+
+
+def test_time_validate_max_vs_value():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(1664, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(1994, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(value=t, min=t_min)
+    w.max = t_max
+    assert w.value.year == 1994
+
+
+def test_time_validate_max_vs_min():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(1664, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(1337, 1, 1, tzinfo=pytz.utc)
+    w = DatetimePicker(value=t, min=t_min)
+    with pytest.raises(TraitError):
+        w.max = t_max
+
+
+def test_time_validate_naive():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=pytz.utc)
+    t_min = datetime.datetime(1442, 1, 1, tzinfo=pytz.utc)
+    t_max = datetime.datetime(2056, 1, 1, tzinfo=pytz.utc)
+
+    w = DatetimePicker(value=t, min=t_min, max=t_max)
+    with pytest.raises(TraitError):
+        w.max = t_max.replace(tzinfo=None)
+    with pytest.raises(TraitError):
+        w.min = t_min.replace(tzinfo=None)
+    with pytest.raises(TraitError):
+        w.value = t.replace(tzinfo=None)
+
+
+def test_datetime_tzinfo():
+    tz = pytz.timezone('Australia/Sydney')
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=tz)
+    w = DatetimePicker(value=t)
+    assert w.value == t
+    # tzinfo only changes upon input from user
+    assert w.value.tzinfo == tz

ipywidgets/widgets/tests/test_widget_naive_datetime.py

@@ -0,0 +1,95 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+# Copyright (c) Vidar Tonaas Fauske.
+# Distributed under the terms of the Modified BSD License.
+
+import pytest
+
+import datetime
+
+import pytz
+from traitlets import TraitError
+
+from ..widget_datetime import NaiveDatetimePicker
+
+
+def test_time_creation_blank():
+    w = NaiveDatetimePicker()
+    assert w.value is None
+
+
+def test_time_creation_value():
+    t = datetime.datetime.today()
+    w = NaiveDatetimePicker(value=t)
+    assert w.value is t
+
+
+def test_time_validate_value_none():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(1442, 1, 1)
+    t_max = datetime.datetime(2056, 1, 1)
+    w = NaiveDatetimePicker(value=t, min=t_min, max=t_max)
+    w.value = None
+    assert w.value is None
+
+
+def test_time_validate_value_vs_min():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(2019, 1, 1)
+    t_max = datetime.datetime(2056, 1, 1)
+    w = NaiveDatetimePicker(min=t_min, max=t_max)
+    w.value = t
+    assert w.value.year == 2019
+
+
+def test_time_validate_value_vs_max():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(1664, 1, 1)
+    t_max = datetime.datetime(1994, 1, 1)
+    w = NaiveDatetimePicker(min=t_min, max=t_max)
+    w.value = t
+    assert w.value.year == 1994
+
+
+def test_time_validate_min_vs_value():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(2019, 1, 1)
+    t_max = datetime.datetime(2056, 1, 1)
+    w = NaiveDatetimePicker(value=t, max=t_max)
+    w.min = t_min
+    assert w.value.year == 2019
+
+
+def test_time_validate_min_vs_max():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(2112, 1, 1)
+    t_max = datetime.datetime(2056, 1, 1)
+    w = NaiveDatetimePicker(value=t, max=t_max)
+    with pytest.raises(TraitError):
+        w.min = t_min
+
+
+def test_time_validate_max_vs_value():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(1664, 1, 1)
+    t_max = datetime.datetime(1994, 1, 1)
+    w = NaiveDatetimePicker(value=t, min=t_min)
+    w.max = t_max
+    assert w.value.year == 1994
+
+
+def test_time_validate_max_vs_min():
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7)
+    t_min = datetime.datetime(1664, 1, 1)
+    t_max = datetime.datetime(1337, 1, 1)
+    w = NaiveDatetimePicker(value=t, min=t_min)
+    with pytest.raises(TraitError):
+        w.max = t_max
+
+
+def test_datetime_tzinfo():
+    tz = pytz.timezone('Australia/Sydney')
+    t = datetime.datetime(2002, 2, 20, 13, 37, 42, 7, tzinfo=tz)
+    with pytest.raises(TraitError):
+        w = NaiveDatetimePicker(value=t)

ipywidgets/widgets/tests/test_widget_time.py

@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+# Copyright (c) Vidar Tonaas Fauske.
+# Distributed under the terms of the Modified BSD License.
+
+import pytest
+
+import datetime
+
+from traitlets import TraitError
+
+from ..widget_time import TimePicker
+
+
+def test_time_creation_blank():
+    w = TimePicker()
+    assert w.value is None
+
+
+def test_time_creation_value():
+    t = datetime.time()
+    w = TimePicker(value=t)
+    assert w.value is t
+
+
+def test_time_validate_value_none():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(2)
+    t_max = datetime.time(22)
+    w = TimePicker(value=t, min=t_min, max=t_max)
+    w.value = None
+    assert w.value is None
+
+
+def test_time_validate_value_vs_min():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(14)
+    t_max = datetime.time(22)
+    w = TimePicker(min=t_min, max=t_max)
+    w.value = t
+    assert w.value.hour == 14
+
+
+def test_time_validate_value_vs_max():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(2)
+    t_max = datetime.time(12)
+    w = TimePicker(min=t_min, max=t_max)
+    w.value = t
+    assert w.value.hour == 12
+
+
+def test_time_validate_min_vs_value():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(14)
+    t_max = datetime.time(22)
+    w = TimePicker(value=t, max=t_max)
+    w.min = t_min
+    assert w.value.hour == 14
+
+
+def test_time_validate_min_vs_max():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(14)
+    t_max = datetime.time(12)
+    w = TimePicker(value=t, max=t_max)
+    with pytest.raises(TraitError):
+        w.min = t_min
+
+
+def test_time_validate_max_vs_value():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(2)
+    t_max = datetime.time(12)
+    w = TimePicker(value=t, min=t_min)
+    w.max = t_max
+    assert w.value.hour == 12
+
+
+def test_time_validate_max_vs_min():
+    t = datetime.time(13, 37, 42, 7)
+    t_min = datetime.time(2)
+    t_max = datetime.time(1)
+    w = TimePicker(value=t, min=t_min)
+    with pytest.raises(TraitError):
+        w.max = t_max