DataTableSource class
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
0
torowCount - 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
- ChangeNotifier
- DataTableSource
Constructors
Properties
- isRowCountApproximate → bool
-
Called to establish if rowCount is 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 call
notifyListeners.
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
-
The hash code for this object. [...]
read-only, inherited
- hasListeners → bool
-
Whether any listeners are currently registered. [...]
@protected, read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, 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 (calls to
addListener and removeListener will throw after the object is
disposed). [...]
@mustCallSuper, inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
notifyListeners(
) → void -
Call all the registered listeners. [...]
@protected, 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
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited