A data source for obtaining row data for PaginatedDataTable objects.
A data table source provides two main pieces of information:
- The number of rows in the data table (rowCount).
- The data for each row (indexed from
0torowCount - 1).
It also provides a listener API (addListener/removeListener) so that consumers of the data can be notified when it changes. When the data changes, call notifyListeners to send the notifications.
DataTableSource objects are expected to be long-lived, not recreated with each build.
- Inheritance
- Object
- Listenable
- ChangeNotifier
- DataTableSource
Constructors
Properties
- isRowCountApproximate → bool
-
Called to establish if
rowCountis a precise number or might be an over-estimate. If this returns true (i.e. the count is approximate), and then later the exact number becomes available, then callnotifyListeners.read-only - rowCount → int
-
Called to obtain the number of rows to tell the user are available.
read-only - selectedRowCount → int
-
Called to obtain the number of rows that are currently selected.
read-only - hashCode → int
-
Get a hash code for this object.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
getRow(
int index) → DataRow -
Called to obtain the data about a particular row.
-
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.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent 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 -
toString(
) → String -
Returns a string representation of this object.
inherited