LinkedAnchor class

An Anchor resolved dynamically through an OverlayAnchorRegistry, via the key an OverlayAnchor widget was registered with.

The registry is resolved from the BuildContext passed to a show() call (see resolve) so the anchor connects to the nearest OverlayAnchorScope; pass registry explicitly to target a specific one.

Inheritance

Constructors

LinkedAnchor(Object key, {OverlayAnchorRegistry? registry})
Creates a LinkedAnchor.
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
key → Object
The registry key, matching an OverlayAnchor.anchor.
final
registry → OverlayAnchorRegistry?
The registry this anchor is bound to. When null it is filled in by resolve from the calling context's nearest OverlayAnchorScope.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
resolve(BuildContext context) → Anchor
Fills in any defaults this anchor needs from context — the BuildContext of whatever show() call is about to use this anchor.
override
subscribe() → AnchorSubscription
Starts a live subscription to this anchor's position/visibility.
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited