ArgumentDecoders class

A set of methods for decoding structured values from a DataSource.

Specifically, these methods decode types that are used by local widgets (q.v. createCoreWidgets).

These methods take a DataSource and a key. The key is a path to the part of the DataSource that the value should be read from. This may identify a map, a list, or a leaf value, depending on the needs of the method.

Properties

hashCode → int: The hash code for this object.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited

Operators

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

Static Properties

colorFilterDecoders → Map<String, ArgumentDecoder<ColorFilter?>>: Extension mechanism for colorFilter.
final
curveDecoders → Map<String, ArgumentDecoder<Curve>>: Extension mechanism for curve.
final
decorationDecoders → Map<String, ArgumentDecoder<Decoration?>>: Extension mechanism for decoration.
final
gradientDecoders → Map<String, ArgumentDecoder<Gradient?>>: Extension mechanism for gradient.
final
gridDelegateDecoders → Map<String, ArgumentDecoder<SliverGridDelegate?>>: Extension mechanism for gridDelegate.
final
imageProviderDecoders → Map<String, ArgumentDecoder<ImageProvider<Object>?>>: Extension mechanism for imageProvider.
final
maskFilterDecoders → Map<String, ArgumentDecoder<MaskFilter?>>: Extension mechanism for maskFilter.
final
shaderDecoders → Map<String, ArgumentDecoder<Shader?>>: Extension mechanism for shader.
final
shapeBorderDecoders → Map<String, ArgumentDecoder<ShapeBorder>>: Extension mechanism for shapeBorder.
final

Static Methods

alignment(DataSource source, List<Object> key) → AlignmentGeometry?: Decodes an AlignmentDirectional or Alignment object out of the specified map.
border(DataSource source, List<Object> key) → BoxBorder?: Returns a BorderDirectional from the specified list.
borderRadius(DataSource source, List<Object> key) → BorderRadiusGeometry?: Returns a BorderRadiusDirectional from the specified list.
borderSide(DataSource source, List<Object> key) → BorderSide?: Returns a BorderSide from the specified map.
boxConstraints(DataSource source, List<Object> key) → BoxConstraints?: Decodes the specified map into a BoxConstraints.
boxShadow(DataSource source, List<Object> key) → BoxShadow: Returns a BoxShadow from the specified map.
color(DataSource source, List<Object> key) → Color?: Returns a Color from the specified integer.
colorFilter(DataSource source, List<Object> key) → ColorFilter?: Returns a ColorFilter from the specified map.
colorMatrix(DataSource source, List<Object> key) → List<double>?: Returns a list of 20 doubles from the specified list.
colorOrBlack(DataSource source, List<Object> key) → Color: Returns a Color from the specified integer.
curve(DataSource source, List<Object> key, BuildContext context) → Curve: Returns a Curve from the specified string.
decoration(DataSource source, List<Object> key) → Decoration?: Returns a Decoration from the specified map.
decorationImage(DataSource source, List<Object> key) → DecorationImage?: Returns a DecorationImage from the specified map.
doubleOrZero(DataSource source, List<Object> key) → double: Returns a double from the specified double.
duration(DataSource source, List<Object> key, BuildContext context) → Duration: Returns a Duration from the specified integer.
edgeInsets(DataSource source, List<Object> key) → EdgeInsetsGeometry?: Returns an EdgeInsetsDirectional from the specified list.
enumValue<T>(List<T> values, DataSource source, List<Object> key) → T?: Returns one of the values of the specified enum T, from the specified string.
fontFeature(DataSource source, List<Object> key) → FontFeature: Returns a FontFeature from the specified map.
gradient(DataSource source, List<Object> key) → Gradient?: Returns a Gradient from the specified map.
gridDelegate(DataSource source, List<Object> key) → SliverGridDelegate?: Returns a SliverGridDelegate from the specified map.
iconData(DataSource source, List<Object> key) → IconData?: Returns an IconData from the specified map.
iconThemeData(DataSource source, List<Object> key) → IconThemeData?: Returns an IconThemeData from the specified map.
imageProvider(DataSource source, List<Object> key) → ImageProvider<Object>?: Returns an ImageProvider from the specifed map.
list<T>(DataSource source, List<Object> key, ArgumentDecoder<T> decoder) → List<T>?: Returns a List of T values from the specified list, using the given decoder to parse each value.
locale(DataSource source, List<Object> key) → Locale?: Returns a Locale from the specified string.
maskFilter(DataSource source, List<Object> key) → MaskFilter?: Returns a MaskFilter from the specified map.
matrix(DataSource source, List<Object> key) → Matrix4?: Returns a list of 16 doubles from the specified list.
offset(DataSource source, List<Object> key) → Offset?: Returns an Offset from the specified map.
paint(DataSource source, List<Object> key) → Paint?: Returns a Paint from the specified map.
radius(DataSource source, List<Object> key) → Radius?: Returns a Radius from the specified map.
rect(DataSource source, List<Object> key) → Rect?: Returns a Rect from the specified map.
shader(DataSource source, List<Object> key) → Shader?: Returns a Shader based on the specified map.
shapeBorder(DataSource source, List<Object> key) → ShapeBorder?: Returns a ShapeBorder from the specified map or list.
string(DataSource source, List<Object> key) → String: Returns a string from the specified string.
strutStyle(DataSource source, List<Object> key) → StrutStyle?: Returns a StrutStyle from the specified map.
textDecoration(DataSource source, List<Object> key) → TextDecoration: Returns a TextDecoration from the specified list or string.
textHeightBehavior(DataSource source, List<Object> key) → TextHeightBehavior?: Returns a TextHeightBehavior from the specified map.
textStyle(DataSource source, List<Object> key) → TextStyle?: Returns a TextStyle from the specified map.
visualDensity(DataSource source, List<Object> key) → VisualDensity?: Returns a VisualDensity from the specified string or map.