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 to rowCount - 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

Constructors

DataTableSource()

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
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 ==(other) bool
The equality operator. [...]
inherited