Class RepliesView

A simple replies container backed by a ScrollView. Drop-in replacement for the subset of ListView used by Thread: supports makeItem / bindItem / unbindItem / destroyItem, an itemsSource, and a manual RefreshItems(). Items are realized eagerly — there is no virtualization — which keeps the layout stable inside popovers where dynamic-height ListView constantly relayouts itself.

Inheritance
object
CallbackEventHandler
Focusable
VisualElement
ScrollView
RepliesView
Implements
Inherited Members
ScrollView.scrollVariantUssClassName
VisualElement.ExecuteDefaultAction(EventBase)
VisualElement.Focus()
VisualElement.Overlaps(Rect)
VisualElement.ToString()
VisualElement.GetFirstOfType<T>()
VisualElement.GetFirstAncestorOfType<T>()
VisualElement.canGrabFocus
VisualElement.focusController
VisualElement.cacheAsBitmap
CallbackEventHandler.RegisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)
CallbackEventHandler.RegisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TUserArgsType, TrickleDown)
CallbackEventHandler.UnregisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)
CallbackEventHandler.UnregisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TrickleDown)
Namespace: Unity.AppUI.UI
Assembly: Unity.AppUI.dll
Syntax
public class RepliesView : ScrollView, IEventHandler, ITransform, ITransitionAnimations, IExperimentalFeatures, IVisualElementScheduler, IResolvedStyle

Constructors

RepliesView()

Initializes a new instance of RepliesView with vertical scrolling and no horizontal scrollbar.

Declaration
public RepliesView()

Properties

bindItem

Callback invoked to bind data from itemsSource at the given index to the supplied visual element.

Declaration
public Action<VisualElement, int> bindItem { get; set; }
Property Value
Type Description
Action<VisualElement, int>

destroyItem

Callback invoked to dispose of a visual element that is no longer needed.

Declaration
public Action<VisualElement> destroyItem { get; set; }
Property Value
Type Description
Action<VisualElement>

itemsSource

The data source that drives the list. Call RefreshItems() after changing the source or its contents to update the view.

Declaration
public IList itemsSource { get; set; }
Property Value
Type Description
IList

makeItem

Callback invoked to create a new item visual element when the list needs one.

Declaration
public Func<VisualElement> makeItem { get; set; }
Property Value
Type Description
Func<VisualElement>

selectionType

Accepted for API compatibility with ListView but has no effect; RepliesView does not support item selection.

Declaration
public SelectionType selectionType { get; set; }
Property Value
Type Description
SelectionType

unbindItem

Callback invoked to release any bindings on a visual element before it is destroyed or recycled.

Declaration
public Action<VisualElement, int> unbindItem { get; set; }
Property Value
Type Description
Action<VisualElement, int>

virtualizationMethod

Accepted for API compatibility with ListView but has no effect; RepliesView always realizes items eagerly.

Declaration
public CollectionVirtualizationMethod virtualizationMethod { get; set; }
Property Value
Type Description
CollectionVirtualizationMethod

Methods

GetRootElementForIndex(int)

Returns the root visual element for the item at index, or null if the index is out of range.

Declaration
public VisualElement GetRootElementForIndex(int index)
Parameters
Type Name Description
int index

Zero-based index into itemsSource.
Returns
Type Description
VisualElement

The realized VisualElement for that index, or null.

RefreshItems()

Destroys all current item elements and recreates them from itemsSource using makeItem and bindItem.

Declaration
public void RefreshItems()

Implements

Extension Methods