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Feat: Added support for onData callback #71

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Feat: Added support for onData callback #71

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10 changes: 10 additions & 0 deletions lib/src/firestore_pagination.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,7 @@ class FirestorePagination extends StatefulWidget {
this.padding,
this.controller,
this.pageController,
this.onData,
});

/// The query to use to fetch data from Firestore.
Expand Down Expand Up @@ -161,6 +162,11 @@ class FirestorePagination extends StatefulWidget {
/// Defaults to [PageController].
final PageController? pageController;

/// Callback for when data is loaded, allows access to loaded data from the parent widget.
///
/// Defaults to `null`.
final void Function(List<DocumentSnapshot>)? onData;

@override
State<FirestorePagination> createState() => _FirestorePaginationState();
}
Expand Down Expand Up @@ -221,6 +227,8 @@ class _FirestorePaginationState extends State<FirestorePagination> {
..clear()
..addAll(snapshot.docs);

widget.onData?.call(_docs);

// To set new updates listener for the existing data
// or to set new live listener if the first document is removed.
final isDocRemoved = snapshot.docChanges.any(
Expand Down Expand Up @@ -281,6 +289,8 @@ class _FirestorePaginationState extends State<FirestorePagination> {

_docs.insert(0, snapshot.docs.first);

widget.onData?.call(_docs);

// To handle newly added data after this curently loaded data.
await _setLiveListener();

Expand Down