SymbolsProvider class
This provider is used to handle the smybols displayed in the middle of the screen
Its fields are:
shuffled a boolean that determines if the symbols list has been shuffled: the order the symbols appear in the reference key must change every time a test (trial or not) starts.
symbols a list with 9 elements: one for each symbol
trialCounter in the trial test all of the 9 symbols have to be displayed (in a random order) before passing to total random mode. This variable is a counter of how many of them have been displayed
trialOrder this list of integers sets the order in which the 9 symbols are to be displayed in the trial test
id the position in the symbols list of the symbol to be displayed
- Inheritance
-
- Object
- ChangeNotifier
- SymbolsProvider
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- id ↔ int
-
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shuffled ↔ bool
-
getter/setter pair
-
symbols
↔ List<
String> -
getter/setter pair
- trialCounter ↔ int
-
getter/setter pair
-
trialOrder
↔ List<
int> -
getter/setter pair
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
changeActiveId(
{required int newId}) → void -
Assigns the required argument
newIdto id and calls notifyListeners -
dispose(
) → void -
Discards any resources used by the object. After this is called, the
object is not in a usable state and should be discarded (calls to
addListener will throw after the object is disposed).
inherited
-
generateNewOrder(
) → void - Generates a new random order for a list of numbers from 0 to 8 assigns it to trialOrder and calls notifyListeners
-
getSymbols(
) → List< String> - This function returns the list symbols. Before returning the list, it checks the variable shuffled and if it is false, it generates a new random order for the list.
-
incrementTrialCounter(
) → void - Increments by 1 trialCounter and calls notifyListeners
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
resetTrialCounter(
) → void - Sets to 0 the trialCounter and calls notifyListeners
-
setShuffled(
bool b) → void -
Assigns the argument
bto shuffled and calls notifyListeners -
setSymbols(
bool isSymbols1) → void - Gives value to symbols:
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited