A widget that determines the ambient directionality of text and text-direction-sensitive render objects.

For example, Padding depends on the Directionality to resolve EdgeInsetsDirectional objects into absolute EdgeInsets objects.

Inheritance

Constructors

Directionality({Key key, @required TextDirection textDirection, @required Widget child })
Creates a widget that determines the directionality of text and text-direction-sensitive render objects. [...]
const

Properties

textDirection TextDirection
The text direction for this subtree.
final
child Widget
The widget below this widget in the tree.
final, inherited
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

debugFillProperties(DiagnosticPropertiesBuilder description) → void
updateShouldNotify(Directionality old) bool
Whether the framework should notify widgets that inherit from this widget. [...]
createElement() InheritedElement
Inflates this configuration to a concrete instance. [...]
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, 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 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 ==(other) bool
The equality operator. [...]
inherited

Static Methods

of(BuildContext context) TextDirection
The text direction from the closest instance of this class that encloses the given context. [...]