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
valueno 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
statusno setter - isDeleting → bool
-
Get
deleting
statusno setter - isEmpty → bool
-
Get status of
data
. Returntrue
ifdata == null
.no setter - isError → bool
-
Get
error
statusno setter - isLoading → bool
-
Get
loading
statusno setter - isUpdating → bool
-
Get
updating
statusno 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, defaultfalse
. -
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
SetisQuiet = true
to avoid rendering loading state, defaultfalse
. -
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 anderror
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 recallfetch
/// SetisQuiet = true
to avoid rendering loading state, defaultfalse
. -
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
. SetisQuiet = true
to avoid rendering loading state, defaultfalse
.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited