Added the dateinput and timeinput widgets for toga/web

changes/2176.feature.rst

@@ -0,0 +1 @@
+DateInput and TimeInput widgets were added to the Web backend.

docs/reference/data/widgets_by_platform.csv

@@ -6,7 +6,7 @@ MainWindow,Core Component,:class:`~toga.MainWindow`,The main window of the appli
 ActivityIndicator,General Widget,:class:`~toga.ActivityIndicator`,A spinning activity animation,|y|,|y|,,,,|b|,
 Button,General Widget,:class:`~toga.Button`,Basic clickable Button,|y|,|y|,|y|,|y|,|y|,|b|,|b|
 Canvas,General Widget,:class:`~toga.Canvas`,A drawing area for 2D vector graphics.,|y|,|y|,|y|,|y|,|y|,,
-DateInput,General Widget,:class:`~toga.DateInput`,A widget to select a calendar date,,,|y|,,|y|,,
+DateInput,General Widget,:class:`~toga.DateInput`,A widget to select a calendar date,,,|y|,,|y|,|b|,
 DetailedList,General Widget,:class:`~toga.DetailedList`,"An ordered list of content where each item has an icon, a main heading, and a line of supplementary text.",|y|,|y|,|b|,|y|,|y|,,
 Divider,General Widget,:class:`~toga.Divider`,A horizontal or vertical line,|y|,|y|,|y|,,|y|,|b|,
 ImageView,General Widget,:class:`~toga.ImageView`,A widget that displays an image,|y|,|y|,|y|,|y|,|y|,,

web/src/toga_web/factory.py

@@ -11,6 +11,7 @@
 from .widgets.activityindicator import ActivityIndicator
 from .widgets.box import Box
 from .widgets.button import Button
+from .widgets.dateinput import DateInput
 from .widgets.divider import Divider
 
 # from .widgets.canvas import Canvas
@@ -32,6 +33,7 @@
 
 # from .widgets.table import Table
 from .widgets.textinput import TextInput
+from .widgets.timeinput import TimeInput
 
 # from .widgets.tree import Tree
 # from .widgets.webview import WebView
@@ -59,6 +61,7 @@ def not_implemented(feature):
     "Box",
     "Button",
     # 'Canvas',
+    "DateInput",
     "Divider",
     # 'DetailedList',
     # 'ImageView',
@@ -76,6 +79,7 @@ def not_implemented(feature):
     "Switch",
     # 'Table',
     "TextInput",
+    "TimeInput",
     # 'Tree',
     # 'WebView',
     # 'Window',

web/src/toga_web/widgets/dateinput.py

@@ -0,0 +1,48 @@
+import datetime
+
+from toga_web.libs import create_proxy
+
+from .base import Widget
+
+
+def py_date(native_date):
+    return datetime.datetime.strptime(native_date, "%Y-%m-%d").date()
+
+
+def native_date(py_date):
+    return py_date.strftime("%Y-%m-%d")
+
+
+class DateInput(Widget):
+    def create(self):
+        self._return_listener = None
+        self.native = self._create_native_widget("sl-input")
+        self.native.setAttribute("type", "date")
+        self.native.addEventListener("sl-change", create_proxy(self.on_change))
+
+    def get_value(self):
+        return py_date(self.native.value)
+
+    def set_value(self, value):
+        if value is None:
+            self.native.value = ""
+        self.native.value = value
+
+    def on_change(self, event):
+        self.interface.on_change(None)
+
+    def get_min_date(self):
+        if self.native.min:
+            return py_date(self.native.min)
+        return datetime.date(1800, 1, 1)
+
+    def get_max_date(self):
+        if self.native.max:
+            return py_date(self.native.max)
+        return datetime.date(8999, 12, 31)
+
+    def set_min_date(self, value):
+        self.native.min = native_date(value)
+
+    def set_max_date(self, value):
+        self.native.max = native_date(value)

web/src/toga_web/widgets/timeinput.py

@@ -0,0 +1,57 @@
+import datetime
+
+from toga_web.libs import create_proxy
+
+from .base import Widget
+
+
+def py_time(native_time):
+    return datetime.time.fromisoformat(native_time)
+
+
+def native_time(py_time):
+    return py_time.strftime("%H:%M")
+
+
+class TimeInput(Widget):
+    def create(self):
+        self._return_listener = None
+        self.native = self._create_native_widget("sl-input")
+        self.native.setAttribute("type", "time")
+
+        self.set_value(datetime.datetime.now().time().strftime("%H:%M"))
+        self.native.addEventListener("sl-change", create_proxy(self.on_change))
+
+    def on_change(self, event):
+        self.interface.on_change(None)
+
+    def get_value(self):
+        return py_time(self.native.value)
+
+    def set_value(self, value):
+        if value is None:
+            self.native.value = ""
+        self.native.value = self._format_time(value)
+
+    def set_min_time(self, value):
+        self.native.min = self._format_time(value)
+
+    def set_max_time(self, value):
+        self.native.max = self._format_time(value)
+
+    def get_min_time(self):
+        if self.native.min:
+            return py_time(self.native.min)
+        return datetime.time(0, 0, 0)
+
+    def get_max_time(self):
+        if self.native.max:
+            return py_time(self.native.max)
+        return datetime.time(23, 59, 59)
+
+    def _format_time(self, value):
+        if isinstance(value, str):
+            value = native_time(py_time(value))
+        if isinstance(value, datetime.time):
+            value = native_time(value)
+        return value