Skip to content

adds equalityChecker parameter to AutoAnimatedList #8

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
maeddin wants to merge 1 commit into
base: main
Choose a base branch
from
Open

adds equalityChecker parameter to AutoAnimatedList #8

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
20 changes: 13 additions & 7 deletions auto_animated_list/lib/src/auto_animated_list.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,14 +1,12 @@
import 'package:flutter/material.dart';

import 'package:diffutil_dart/diffutil.dart' as diffutil;

import 'package:auto_animated_list/src/extensions/list_element_at_or_null.dart';
import 'package:diffutil_dart/diffutil.dart' as diffutil;
import 'package:flutter/material.dart';

/// ListView widget that implicitly animates when `items` changes.
class AutoAnimatedList<T> extends StatefulWidget {
/// Creates a ListView widget that implicitly animates when `items` changes.
const AutoAnimatedList({
Key? key,
super.key,
required this.items,
required this.itemBuilder,
this.scrollDirection = Axis.vertical,
Expand All @@ -18,7 +16,8 @@ class AutoAnimatedList<T> extends StatefulWidget {
this.physics,
this.controller,
this.padding,
}) : super(key: key);
this.equalityChecker,
});

/// List of items that the [itemBuilder] should animate widgets for.
final List<T> items;
Expand Down Expand Up @@ -98,6 +97,9 @@ class AutoAnimatedList<T> extends StatefulWidget {
/// List items are only built when they're scrolled into view.
final Widget Function(BuildContext, T, int, Animation<double>) itemBuilder;

/// Indicates if two items are equal.
final bool Function(T, T)? equalityChecker;

@override
State<AutoAnimatedList<T>> createState() => _AutoAnimatedListState<T>();
}
Expand Down Expand Up @@ -139,7 +141,11 @@ class _AutoAnimatedListState<T> extends State<AutoAnimatedList<T>> {
if (listState == null) return;

final newList = widget.items;
final diffResult = diffutil.calculateListDiff<T>(oldList, newList);
final diffResult = diffutil.calculateListDiff<T>(
oldList,
newList,
equalityChecker: widget.equalityChecker,
);
final updates = diffResult.getUpdates(batch: false);
if (updates.isEmpty) return;
for (final update in updates) {
Expand Down