ShortcutRegistrar class Null safety

A widget that holds a ShortcutRegistry which allows descendants to add, remove, or replace shortcuts.

This widget holds a ShortcutRegistry so that its descendants can find it with ShortcutRegistry.of or ShortcutRegistry.maybeOf.

The registered shortcuts are valid whenever a widget below this one in the hierarchy has focus.

To add shortcuts to the registry, call ShortcutRegistry.of or ShortcutRegistry.maybeOf to get the ShortcutRegistry, and then add them using ShortcutRegistry.addAll, which will return a ShortcutRegistryEntry which must be disposed by calling ShortcutRegistryEntry.dispose when the shortcuts are no longer needed.

To replace or update the shortcuts in the registry, call ShortcutRegistryEntry.replaceAll.

To remove previously added shortcuts from the registry, call ShortcutRegistryEntry.dispose on the entry returned by ShortcutRegistry.addAll.



ShortcutRegistrar({Key? key, required Widget child})
Creates a const ShortcutRegistrar.


child Widget
The widget below this widget in the tree.
hashCode int
The hash code for this object.
@nonVirtual, 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


createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
createState() State<ShortcutRegistrar>
Creates the mutable state for this widget at a given location in the tree.
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.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
toString({DiagnosticLevel minLevel =}) String
A string representation of this object.
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants.
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object.
toStringShort() String
A short, textual description of this widget.


operator ==(Object other) bool
The equality operator.
@nonVirtual, inherited