VirtualizingLayoutContext Class

Summary

Represents the base class for layout context types that support virtualization.
Namespace
Avalonia.Layout
Interfaces
Base Types
graph BT Type-->Base0["LayoutContext"] click Base0 "/api/Avalonia.Layout/LayoutContext" Base0-->Base1["AvaloniaObject"] click Base1 "/api/Avalonia/AvaloniaObject" Base1-->Base2["object"] Type-.->Interface0["IAvaloniaObject"] click Interface0 "/api/Avalonia/IAvaloniaObject" Type-.->Interface1["IAvaloniaObjectDebug"] click Interface1 "/api/Avalonia.Diagnostics/IAvaloniaObjectDebug" Type-.->Interface2["INotifyPropertyChanged"] Type["VirtualizingLayoutContext"] class Type type-node

Syntax

public abstract class VirtualizingLayoutContext : LayoutContext, IAvaloniaObject, 
    IAvaloniaObjectDebug, INotifyPropertyChanged

Events

Name Type Summary
PropertyChanged EventHandler<AvaloniaPropertyChangedEventArgs>
Raised when a AvaloniaProperty value changes on this object.
Inherited from AvaloniaObject

Properties

Name Value Summary
InheritanceParent IAvaloniaObject
Gets or sets the parent object that inherited AvaloniaProperty values are inherited from.
Inherited from AvaloniaObject
ItemCount int
Gets the number of items in the data.
LayoutOrigin Point
Gets or sets the origin point for the estimated content size.
LayoutOriginCore Point
Implements the behavior of LayoutOrigin in a derived or custom VirtualizingLayoutContext.
LayoutState object
Gets or sets an object that represents the state of a layout.
Inherited from LayoutContext
LayoutStateCore object
Implements the behavior of LayoutState in a derived or custom LayoutContext.
Inherited from LayoutContext
RealizationRect Rect
Gets an area that represents the viewport and buffer that the layout should fill with realized elements.
RecommendedAnchorIndex int
Gets the recommended index from which to start the generation and layout of elements.
RecommendedAnchorIndexCore int
Implements the behavior for getting the return value of RecommendedAnchorIndex in a derived or custom VirtualizingLayoutContext.
this[AvaloniaProperty] object
Gets or sets the value of a AvaloniaProperty.
Inherited from AvaloniaObject
this[IndexerDescriptor] IBinding
Gets or sets a binding for a AvaloniaProperty.
Inherited from AvaloniaObject

Methods

Name Value Summary
AffectsValidation(AvaloniaProperty, AvaloniaProperty[]) void
Forces revalidation of properties when a property value changes.
Inherited from AvaloniaObject
static
Bind(AvaloniaProperty, IObservable<object>, BindingPriority) IDisposable
Binds a AvaloniaProperty to an observable.
Inherited from AvaloniaObject
Bind<T>(AvaloniaProperty<T>, IObservable<T>, BindingPriority) IDisposable
Binds a AvaloniaProperty to an observable.
Inherited from AvaloniaObject
CheckAccess() bool
Inherited from AvaloniaObject
ClearValue(AvaloniaProperty) void
Clears a AvaloniaProperty's local value.
Inherited from AvaloniaObject
Equals(object) bool
Compares two objects using reference equality.
Inherited from AvaloniaObject
GetHashCode() int
Gets the hash code for the object.
Inherited from AvaloniaObject
GetItemAt(int) object
Retrieves the data item in the source found at the specified index.
GetItemAtCore(int) object
When implemented in a derived class, retrieves the data item in the source found at the specified index.
GetOrCreateElementAt(int) ILayoutable
Retrieves a UIElement that represents the data item in the source found at the specified index. By default, if an element already exists, it is returned; otherwise, a new element is created.
GetOrCreateElementAt(int, ElementRealizationOptions) ILayoutable
Retrieves a UIElement that represents the data item in the source found at the specified index using the specified options.
GetOrCreateElementAtCore(int, ElementRealizationOptions) ILayoutable
When implemented in a derived class, retrieves a UIElement that represents the data item in the source found at the specified index using the specified options.
GetValue(AvaloniaProperty) object
Gets a AvaloniaProperty value.
Inherited from AvaloniaObject
GetValue<T>(AvaloniaProperty<T>) T
Gets a AvaloniaProperty value.
Inherited from AvaloniaObject
IsAnimating(AvaloniaProperty) bool
Checks whether a AvaloniaProperty is animating.
Inherited from AvaloniaObject
IsSet(AvaloniaProperty) bool
Checks whether a AvaloniaProperty is set on this object.
Inherited from AvaloniaObject
ItemCountCore() int
When implemented in a derived class, retrieves the number of items in the data.
OnPropertyChanged(AvaloniaPropertyChangedEventArgs) void
Called when a avalonia property changes on the object.
Inherited from AvaloniaObject
RealizationRectCore() Rect
When implemented in a derived class, retrieves an area that represents the viewport and buffer that the layout should fill with realized elements.
RecycleElement(ILayoutable) void
Clears the specified UIElement and allows it to be either re-used or released.
RecycleElementCore(ILayoutable) void
When implemented in a derived class, clears the specified UIElement and allows it to be either re-used or released.
Revalidate(AvaloniaProperty) void
Forces the specified property to be revalidated.
Inherited from AvaloniaObject
SetAndRaise<T>(AvaloniaProperty<T>, T, T) bool
Sets the backing field for a direct avalonia property, raising the PropertyChanged event if the value has changed.
Inherited from AvaloniaObject
SetValue(AvaloniaProperty, object, BindingPriority) void
Sets a AvaloniaProperty value.
Inherited from AvaloniaObject
SetValue<T>(AvaloniaProperty<T>, T, BindingPriority) void
Sets a AvaloniaProperty value.
Inherited from AvaloniaObject
UpdateDataValidation(AvaloniaProperty, BindingNotification) void
Called to update the validation state for properties for which data validation is enabled.
Inherited from AvaloniaObject
VerifyAccess() void
Inherited from AvaloniaObject

Extension Methods