Struct AccessibilityTreeDelta

Namespace

Forma

Assembly

Forma.dll

What changed between two snapshots. This, not a whole tree, is what an OS bridge or a remote client wants: pushing 500 unchanged nodes because one label moved is the difference between a usable bridge and an unusable one.

public readonly struct AccessibilityTreeDelta

Inherited Members

ValueType.Equals(object)

ValueType.GetHashCode()

ValueType.ToString()

object.GetType()

object.Equals(object, object)

object.ReferenceEquals(object, object)

Properties

Added

Nodes that were not in the previous snapshot.

public IReadOnlyList<AccessibilityNode> Added { get; }

Property Value

IReadOnlyList<AccessibilityNode>

FocusChanged

Whether focus moved, which is reported even when no node's detail changed.

public bool FocusChanged { get; }

Property Value

bool

FocusedId

Where focus is now, or 0 for nothing focused.

public int FocusedId { get; }

Property Value

int

IsEmpty

True when nothing moved, so a caller can skip the push entirely.

public bool IsEmpty { get; }

Property Value

bool

Removed

Ids of nodes that are gone, so a consumer can drop them without a search.

public IReadOnlyList<int> Removed { get; }

Property Value

IReadOnlyList<int>

Updated

Nodes whose reported detail changed. Identity is stable, so these are not re-adds.

public IReadOnlyList<AccessibilityNode> Updated { get; }

Property Value

IReadOnlyList<AccessibilityNode>