BasicDataProvider<T> class abstract

A basic provider to provide a single data object with type T

Mixed-in types

Constructors

BasicDataProvider({bool manual = false})
manual = true mean don't fetch data at create time

Properties

data → T?
Get value data
no setter
error → dynamic
Get error value
no setter
hashCode int
The hash code for this object.
no setterinherited
hasListeners bool
Whether any listeners are currently registered.
no setterinherited
isEmpty bool
Get status of data. Return true if data == null.
no setter
isError bool
Get error status
no setter
isLoading bool
Get loading status
no setter
runtimeType Type
A representation of the runtime type of the object.
no setterinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
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).
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
onFetch() Future<T>
Called when trying to fetch data. Must return the fetched data or throw an error if it's failed to fetch.
onUpdate(T newData) Future<T>
Called when trying to update the data. Must return the new data, or throw and error when it's failed to update.
refresh({bool isQuiet = false}) Future<void>
Refresh value of data by recall fetch data.
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
toString() String
A string representation of this object.
inherited
update(T newData, {bool isQuiet = false}) Future<void>
Update data by newData. Set isQuiet = true to avoid rendering loading state, default false.

Operators

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