QuerySelector<T, S> class
final
Rebuilds only when the selected query result changes.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- QuerySelector
Constructors
-
QuerySelector({required QueryOptions<
T> options, required S select(QueryResult<T> result), required QuerySelectionBuilder<S> builder, bool equals(S previous, S next)?, QueryClient? client, Key? key}) -
Creates a query result selector.
const
Properties
-
builder
→ QuerySelectionBuilder<
S> -
Builds from the selected value.
final
- client → QueryClient?
-
An explicit client, or
nullto use QueryClientProvider.final - equals → bool Function(S previous, S next)?
-
Compares the previous and next selections.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
options
→ QueryOptions<
T> -
The query to observe.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
select
→ S Function(QueryResult<
T> result) -
Selects the value exposed to builder.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< QuerySelector< T, S> > -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent 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 -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → 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.
inherited