AccessibilityNode

Remarks

⚠ Nothing here refers to a UiElement, and that is the point rather than tidiness. Vixen.Ui's graph is single-threaded by contract, and every platform bridge is asked questions from somewhere else — AT-SPI's D-Bus calls arrive on another thread, and AppKit asks on the main one whether or not that is the thread that owns the document. A bridge that answered by walking live elements would be reading a tree while another thread mutated it; a bridge that answers out of one of these is reading a frame that has already happened.

The properties are the ones every bridge needs and no more: the accname, the value, the computed states, the relations and the bounds. Anything a control knows that is not on this list is not reaching a screen reader today whatever the control does with it.

Fields and properties (11)

• public int Id

  This node's identity, stable across the captures of one source, and never 0.

• public string Tag

  The tag of the element it was taken from. Diagnostics only — no bridge should map on it.

• public AccessibleRole Role

  What kind of thing it is. Never None: those are not nodes.

• public string? Name

  What a screen reader calls it.

• public string? Description

  What a screen reader adds after the name.

• public string? Value

  What it currently holds, for the roles that hold something.

• public AccessibleStates States

  Every state bit, computed at the moment of capture.

• public Rectangle Bounds

  Where it is, in the document's coordinate space.

• public int Parent

  The node this one hangs under, or 0 if it is a root of the capture.

• public IReadOnlyList<AccessibilityNode> Children

  Its children in the accessibility tree, which is not the element tree.

• public IReadOnlyList<AccessibilityLink> Links

  Its relations, with the far ends resolved to node ids.

Used by (4)

• AccessibilitySnapshotVixen.Ui.Testing
• AccessibilityTreeVixen.Ui
• AccessibilityTreeSourceVixen.Ui
• AccessibilityTreeTestsVixen.Ui.Tests