Finder class
Searches a widget tree and returns nodes that match a particular pattern.
- Implementers
Constructors
Properties
-
allCandidates
→ Iterable<
Element> -
Returns all the Elements that will be considered by this finder. [...]
@protected, read-only
- description → String
-
Describes what the finder is looking for. The description should be
a brief English noun phrase describing the finder's pattern.
read-only
- first → Finder
-
Returns a variant of this finder that only matches the first element
matched by this finder.
read-only
- last → Finder
-
Returns a variant of this finder that only matches the last element
matched by this finder.
read-only
- skipOffstage → bool
-
Whether this finder skips nodes that are offstage. [...]
final
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
apply(
Iterable< Element> candidates) → Iterable< Element> - Returns all the elements in the given list that match this finder's pattern. [...]
-
at(
int index) → Finder - Returns a variant of this finder that only matches the element at the given index matched by this finder.
-
evaluate(
) → Iterable< Element> - Returns the current result. If precache was called and returned true, this will cheaply return the result that was computed then. Otherwise, it creates a new iterable to compute the answer. [...]
-
hitTestable(
{Alignment at: Alignment.center }) → Finder - Returns a variant of this finder that only matches elements reachable by a hit test. [...]
-
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. [...]
-
toString(
) → String -
Returns a string representation of this object.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited