DraggableScrollableActuator class

A widget that can notify a descendent DraggableScrollableSheet that it should reset its position to the initial state.

The Scaffold uses this widget to notify a persistentent bottom sheet that the user has tapped back if the sheet has started to cover more of the body than when at its initial position. This is important for users of assistive technology, where dragging may be difficult to communicate.

Inheritance

Constructors

DraggableScrollableActuator({Key key, @required Widget child })
Creates a widget that can notify descendent DraggableScrollableSheets to reset to their initial position. [...]

Properties

child Widget
This child's DraggableScrollableSheet descendant will be reset when the reset method is applied to a context that includes it. [...]
final
hashCode int
The hash code for this object. [...]
read-only, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

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. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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.debug }) String
Returns 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 ==(dynamic other) bool
The equality operator. [...]
inherited

Static Methods

reset(BuildContext context) bool
Notifies any descendant DraggableScrollableSheet that it should reset to its initial position. [...]