BasicDataProvider<T> class abstract

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

Mixed-in types

Constructors

BasicDataProvider({bool manual = false, bool awaitListener = 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
isDeleted → bool
Get deleted status
no setter
isDeleting → bool
Get deleting status
no setter
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
isUpdating → bool
Get updating 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
delete({bool isQuiet = false}) → Future<void>
Delete current data Set isQuiet = true to avoid rendering loading state, default false.
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
fetch({bool isQuiet = false}) → Future<void>
Fetch data by calling onFetch Set isQuiet = true to avoid rendering loading state, default false.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
onDelete() → Future<bool>
Called when trying to delete the data. Must return a boolean (true mean deleted), or throw and error when it's failed.
onDeleteCompleted(bool result) → Future<void>
onDeleteFailed(dynamic error) → Future<void>
onFetch() → Future<T>
Called when trying to fetch data. Must return the fetched data or throw an error if it's failed to fetch.
onFetchCompleted(T data) → Future<void>
onFetchFailed(dynamic error) → Future<void>
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.
onUpdateCompleted(T newData) → Future<void>
onUpdateFailed(dynamic error) → Future<void>
refresh({bool isQuiet = false}) → Future<void>
Refresh value of data by recall fetch /// Set isQuiet = true to avoid rendering loading state, default false.
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