Backdrop class

InheritedWidget that exposes state of BackdropScaffold.

Backdrop.of can be used to access BackdropScaffoldState from anywhere below the widget tree.

It can be used to explicitly call backdrop functionality like BackdropScaffoldState.fling, BackdropScaffoldState.concealBackLayer, BackdropScaffoldState.revealBackLayer, etc.

Example:

Backdrop.of(context).fling();
Inheritance

Constructors

Backdrop({Key? key, required BackdropScaffoldState data, required Widget child})
Creates a Backdrop instance.
const

Properties

child Widget
The widget below this widget in the tree.
finalinherited
data BackdropScaffoldState
Holds the state of this widget.
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

createElement() InheritedElement
Inflates this configuration to a concrete instance.
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.
inherited
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
updateShouldNotify(covariant Backdrop oldWidget) bool
Whether the framework should notify widgets that inherit from this widget.
override

Operators

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

Static Methods

of(BuildContext context) BackdropScaffoldState
Provides access to the state from everywhere in the widget tree.