OperationGroup<TKey> class
Animation group for a single expand/collapse operation.
Each call to TreeController.expand or TreeController.collapse creates
an OperationGroup with its own AnimationController. This provides
automatic proportional timing on reversal: collapsing a 60%-done expand
takes 60% of the duration, not 100%.
Constructors
- OperationGroup({required AnimationController controller, required Curve curve, required TKey operationKey})
Properties
- controller → AnimationController
-
The animation controller driving this group.
final
- curve → Curve
-
The curve applied to the animation.
final
- curvedValue → double
-
Gets the curved animation value.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
-
members
→ Map<
TKey, NodeGroupExtent> -
Per-node extent data for members of this group.
final
- operationKey → TKey
-
The node whose expand/collapse created this group.
final
-
pendingRemoval
→ Set<
TKey> -
Keys that should be removed from visible order when animation
completes at value = 0 (nodes that are collapsing out).
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
dispose(
) → void - Disposes the animation controller.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited