ChainedFinder class abstract

Applies additional filtering against a parent widget finder.

Inheritance
Mixed-in types

Constructors

ChainedFinder(FinderBase<Element> parent)
Create a Finder chained against the candidates of another parent Finder.

Properties

allCandidates → Iterable<Element>
Returns all of the items that will be considered by this finder.
no setterinherited
description → String
Describes what the finder is looking for. The description should be a brief English noun phrase describing the finder's requirements.
no setterinherited
first → Finder
Returns a variant of this finder that only matches the first item found by this finder.
no setterinherited
found → FinderResult<Element>
The results of the latest evaluate or tryEvaluate call.
no setterinherited
hasFound → bool
Whether or not this finder has any results in found.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
last → Finder
Returns a variant of this finder that only matches the last item found by this finder.
no setterinherited
parent → FinderBase<Element>
Another finder whose results will be further filtered.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
skipOffstage → bool
Whether this finder skips nodes that are offstage.
finalinherited

Methods

apply(Iterable<Element> candidates) → Iterable<Element>
Returns all the elements in the given list that match this finder's pattern.
inherited
at(int index) → Finder
Returns a variant of this finder that only matches the item at the given index found by this finder.
inherited
describeMatch(Plurality plurality) → String
Describes zero, one, or more candidates that match the requirements of a finder.
inherited
evaluate() → FinderResult<Element>
Searches a set of candidates for those that meet the requirements set by this finder and returns the result of that search.
inherited
filter(Iterable<Element> parentCandidates) → Iterable<Element>
Return another Iterable when given an Iterable of candidates from a parent FinderBase.
inherited
findInCandidates(Iterable<Element> candidates) → Iterable<Element>
Returns all the items in the given list that match this finder's requirements.
inherited
hitTestable({Alignment at = Alignment.center}) → Finder
Returns a variant of this finder that only matches elements reachable by a hit test.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
precache() → bool
Attempts to evaluate the finder. Returns whether any elements in the tree matched the finder. If any did, then the result is cached and can be obtained from evaluate.
inherited
reset() → void
Resets all state of this FinderBase.
inherited
runCached(VoidCallback run) → void
Runs the given callback using cached results.
inherited
toString({bool describeSelf = false}) → String
A string representation of this finder or its results.
inherited
tryEvaluate() → bool
Searches a set of candidates for those that meet the requirements set by this finder and returns whether the search found any matching candidates.
inherited

Operators

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