Selector0<T> class
A base class for custom Selector.
It works with any InheritedWidget
. Variants like Selector and
Selector6 are just syntax sugar to use Selector0 with Provider.of.
But it will not work with values
coming from anything but InheritedWidget
.
As such, the following:
T value;
return Selector0(
selector: (_) => value,
builder: ...,
)
will still call builder
again, even if value
didn't change.
Constructors
-
Selector0({Key key, @required ValueWidgetBuilder<
T> builder, @required T selector(BuildContext), ShouldRebuild<T> shouldRebuild, Widget child}) -
Both
builder
andselector
must not benull
.
Properties
-
builder
→ ValueWidgetBuilder<
T> -
A function that builds a widget tree from
child
and the last result of selector. [...]final - 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
- selector → T Function(BuildContext)
-
A function that obtains some
InheritedWidget
and map their content into a new object with only a limited number of properties. [...]final
Methods
-
createElement(
) → SingleChildStatefulElement -
Creates a
StatefulElement
to manage this widget's location in the tree. [...]inherited -
createState(
) → _Selector0State< T> - 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. [...]
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.info}) → 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 ==(
Object other) → bool -
The equality operator. [...]
@nonVirtual, inherited