StatefulWindowDelegate<T extends SceneElement> class abstract

A WindowDelegate which can maintain it's own state and request rebuilds based on this state.

Inheritance

Constructors

StatefulWindowDelegate()

Properties

elements → List<T>
The SceneElements currently in the Scene above the Window.
no setter
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context, T element) → Widget
Returns a Widget which gives element a visual representation in the Window.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
didAddElement(T element) → void
Callback which is invoked when a new element has been added to elements.
didChangeElement(T element) → void
Callback which is invoked when an element in elements has changed.
didRemoveElement(T element) → void
Callback which is invoked when an element has been removed from elements.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paintOrder(T element) → int
Returns a number which is used to determine the order in which multiple SceneElements inside of a Window are painted.
inherited
rebuildElement(T element) → void
Notifies Window that the visual representation of element needs to be be rebuild.
sceneElementAnchor(T element) → AlignmentGeometry
Returns an anchor that is positioned relatively to element and with which windowElementAnchor will be aligned to position the Widget, representing element, in the Window.
inherited
shouldRebuild(WindowDelegate<T> oldDelegate) → bool
Returns whether the SceneElements of the Window should be rebuild after the oldDelegate has been replaced with this instance.
inherited
showElement(T element) → bool
Returns whether element should be shown in the Window.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited
useElementSize(T element) → bool
Whether the Widget returned from build should be forced to have the same size as element.
inherited
windowElementAnchor(T element) → AlignmentGeometry
Returns an anchor that is positioned relatively to the Widget representing element and which will be aligned with sceneElementAnchor to position the Widget in the Window.
inherited

Operators

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