LayoutDelegateBuilder<T extends SceneElementLayoutDelegate> class
A builder Widget which rebuilds it's child when it's LayoutDelegateSceneElement's SceneElementLayoutDelegate notifies it's listeners or is replaced.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- LayoutDelegateBuilder
Constructors
-
LayoutDelegateBuilder({Key? key, required LayoutDelegateSceneElement<
T> element, required ValueWidgetBuilder<T> builder, Widget? child}) -
Creates a builder Widget which rebuilds it's child when it's
LayoutDelegateSceneElement's SceneElementLayoutDelegate notifies it's
listeners or is replaced.
const
Properties
-
builder
→ ValueWidgetBuilder<
T> -
The builder which is called when the LayoutDelegateSceneElement notifies
it's listeners or is replaced.
final
- child → Widget?
-
Optional Widget which is passed to builder to prevent unnecessary
rebuilds.
final
-
element
→ LayoutDelegateSceneElement<
T> -
The LayoutDelegateSceneElement whose SceneElementLayoutDelegate
triggers rebuilds, when it notifies it's listeners or is replaced.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNode
objects describing this node's children.inherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
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
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited