docs: ui.switch (deephaven#793)

Closes deephaven#771

---------

Co-authored-by: Don <[email protected]>
Co-authored-by: margaretkennedy <[email protected]>

plugins/ui/docs/components/slider.md

@@ -8,6 +8,7 @@ Sliders allow users to quickly select a value within a fixed range and should be
 ```python
 from deephaven import ui
 
+
 my_slider_basic = ui.slider(default_value=12, label="Cookies to buy")
 ```
 

plugins/ui/docs/components/switch.md

@@ -0,0 +1,140 @@
+# Switch
+
+Switches allow users to turn a single option on or off.
+
+## Example
+
+```python
+from deephaven import ui
+
+my_switch_basic = ui.switch("Low power mode")
+```
+
+## UI recommendations
+
+Recommendations for creating switches:
+
+1. Emphasized switches are ideal for forms and settings where the switch being noticed is crucial, while non-emphasized switches suit monochrome application panels to maintain focus on the content.
+2. Use a standalone switch when the context is clear without a text label, such as next to a panel's title, to enable or disable panel options.
+3. Use switches for activation and checkboxes for selection; unlike checkboxes, switches cannot have an error state.
+4. When a switch represents multiple values from other switches, it should initially appear unselected; clicking it will select and unify all values, while a subsequent click will deselect and reset them.
+5. Switches can only be on or off; for partial states, use a checkbox, as indeterminate switches are not accessible.
+
+Consider using a [`checkbox`](./checkbox.md) for individual selections or when marking a single item as selected.
+
+## Value
+
+Switches are not selected by default. Use the `default_selected` prop to set the initial state (uncontrolled) or the `is_selected` prop to control the selected state.
+
+```python
+from deephaven import ui
+
+
+@ui.component
+def ui_switch_value_examples():
+    selected, set_selected = ui.use_state(False)
+    return [
+        ui.switch("Low power mode (uncontrolled)", default_selected=True),
+        ui.switch(
+            "Low power mode (controlled)", is_selected=selected, on_change=set_selected
+        ),
+    ]
+
+
+my_switch_value_examples = ui_switch_value_examples()
+```
+
+
+## HTML Forms
+
+Switches can support a `name` prop for integration with HTML forms, allowing for easy identification of a value on form submission.
+
+```python
+from deephaven import ui
+
+
+my_switch_name_example = ui.form(ui.switch("Low Power Mode", name="power", value="low"))
+```
+
+## Labeling
+
+The switch can be labeled by passing in a child. If no label is provided, an `aria_label` must be provided to identify the control for accessibility purposes.
+
+```python
+from deephaven import ui
+
+
+@ui.component
+def ui_switch_label_examples():
+    return [
+        ui.switch("Switch Label", name="value"),
+        ui.switch(aria_label="Switch Label", name="value"),
+    ]
+
+
+my_switch_label_examples = ui_switch_label_examples()
+```
+
+
+## Events
+
+The `on_change` property is triggered whenever the switch is pressed.
+
+```python
+from deephaven import ui
+
+
+@ui.component
+def ui_switch_on_change_example():
+    selected, set_selected = ui.use_state(False)
+    return [
+        ui.switch("Switch Label", on_change=set_selected, is_selected=selected),
+        ui.text(f"The switch is {'on' if selected else 'off'}."),
+    ]
+
+
+my_switch_on_change_example = ui_switch_on_change_example()
+```
+
+
+## Disabled
+
+Setting the `is_disabled` prop disables the switch.
+
+```python
+from deephaven import ui
+
+
+my_switch_is_disabled_example = ui.switch("Switch Label", is_disabled=True)
+```
+
+
+## Emphasized
+
+The `is_emphasized` prop makes the switch's fill color the user's accent color, adding visual prominence to the selection.
+
+```python
+from deephaven import ui
+
+
+my_switch_is_emphasized_example = ui.switch("Switch Label", is_emphasized=True)
+```
+
+
+## Read only
+
+The `is_read_only` prop makes the switch read-only to prevent user interaction. This differs from setting the `is_disabled` prop since the switch remains focusable.
+
+```python
+from deephaven import ui
+
+
+my_switch_is_read_only_example = ui.switch(
+    "Switch Label", is_read_only=True, default_selected=True
+)
+```
+## API Reference
+
+```{eval-rst}
+.. dhautofunction:: deephaven.ui.switch
+```

plugins/ui/src/deephaven/ui/components/switch.py

@@ -142,6 +142,9 @@ def switch(
         aria_details: The details for the element.
         UNSAFE_class_name: A CSS class to apply to the element.
         UNSAFE_style: A CSS style to apply to the element.
+
+    Returns:
+        The rendered switch element.
     """
 
     return component_element(