Merge pull request #848 from threefoldtech/development_paginate_trans…

…actions Paginate transactions
threefoldtech · Jan 19, 2025 · 640ee19 · 640ee19
2 parents 908f1c5 + fc58d70
commit 640ee19
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Showing 5 changed files with 96 additions and 65 deletions.
diff --git a/app/lib/screens/wallets/transactions.dart b/app/lib/screens/wallets/transactions.dart
@@ -5,6 +5,7 @@ import 'package:threebotlogin/models/wallet.dart';
 import 'package:threebotlogin/services/stellar_service.dart';
 import 'package:threebotlogin/widgets/wallets/transaction.dart';
 import 'package:threebotlogin/widgets/wallets/vertical_divider.dart';
+import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 
 class WalletTransactionsWidget extends StatefulWidget {
   const WalletTransactionsWidget({super.key, required this.wallet});
@@ -16,25 +17,26 @@ class WalletTransactionsWidget extends StatefulWidget {
 }
 
 class _WalletTransactionsWidgetState extends State<WalletTransactionsWidget> {
-  List<PaymentTransaction?> transactions = [];
-  bool loading = true;
+  final _pageSize = 10;
+  final PagingController<int, ITransaction> _pagingController =
+      PagingController(firstPageKey: 1); // Start from page 1
 
-  _listTransactions() async {
-    setState(() {
-      loading = true;
-    });
+  Future<void> _listTransactions(int pageKey) async {
     try {
-      final txs = await listTransactions(widget.wallet.stellarSecret);
-      final transactionsList = txs.map((tx) {
-        if (tx is PaymentTransaction) {
-          return tx;
-        }
-      }).toList();
-      transactions = transactionsList.where((tx) => tx != null).toList();
+      final offset = (pageKey - 1) * _pageSize;
+      final txs = await listTransactions(
+          widget.wallet.stellarSecret, offset, _pageSize);
+      final isLastPage = txs.length < _pageSize;
+      if (isLastPage) {
+        _pagingController.appendLastPage(txs);
+      } else {
+        _pagingController.appendPage(txs, pageKey + 1);
+      }
     } catch (e) {
       logger.e('Failed to load transactions due to $e');
+      _pagingController.error(e);
       if (context.mounted) {
-        final loadingFarmsFailure = SnackBar(
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
           content: Text(
             'Failed to load transaction',
             style: Theme.of(context)
@@ -43,50 +45,29 @@ class _WalletTransactionsWidgetState extends State<WalletTransactionsWidget> {
                 .copyWith(color: Theme.of(context).colorScheme.errorContainer),
           ),
           duration: const Duration(seconds: 3),
-        );
-        ScaffoldMessenger.of(context).clearSnackBars();
-        ScaffoldMessenger.of(context).showSnackBar(loadingFarmsFailure);
+        ));
       }
-    } finally {
-      setState(() {
-        loading = false;
-      });
     }
   }
 
   @override
   void initState() {
     super.initState();
     if (widget.wallet.stellarBalance != '-1') {
-      _listTransactions();
-    } else {
-      setState(() {
-        loading = false;
-        transactions = [];
-      });
+      _pagingController.addPageRequestListener(_listTransactions);
     }
   }
 
+  @override
+  void dispose() {
+    _pagingController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    Widget mainWidget;
-    if (loading) {
-      mainWidget = Center(
-          child: Column(
-        mainAxisAlignment: MainAxisAlignment.center,
-        children: [
-          const CircularProgressIndicator(),
-          const SizedBox(height: 15),
-          Text(
-            'Loading Transactions...',
-            style: Theme.of(context).textTheme.bodyLarge!.copyWith(
-                color: Theme.of(context).colorScheme.onSurface,
-                fontWeight: FontWeight.bold),
-          ),
-        ],
-      ));
-    } else if (transactions.isEmpty) {
-      mainWidget = Center(
+    if (widget.wallet.stellarBalance == '-1') {
+      return Center(
         child: Text(
           'No transactions yet.',
           style: Theme.of(context)
@@ -95,21 +76,45 @@ class _WalletTransactionsWidgetState extends State<WalletTransactionsWidget> {
               .copyWith(color: Theme.of(context).colorScheme.onSurface),
         ),
       );
-    } else {
-      mainWidget = ListView(
-        children: [
-          for (final tx in transactions)
-            Column(
-              children: [
-                TransactionWidget(transaction: tx!),
-                tx == transactions.last
-                    ? const SizedBox()
-                    : const CustomVerticalDivider()
-              ],
-            )
-        ],
-      );
     }
-    return mainWidget;
+
+    return PagedListView<int, ITransaction>(
+      pagingController: _pagingController,
+      builderDelegate: PagedChildBuilderDelegate<ITransaction>(
+        itemBuilder: (context, item, index) => Column(
+          children: [
+            TransactionWidget(transaction: item as PaymentTransaction),
+            if (index < _pagingController.itemList!.length - 1)
+              const CustomVerticalDivider()
+            else
+              const SizedBox(height: 5),
+          ],
+        ),
+        firstPageProgressIndicatorBuilder: (context) => Center(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              const CircularProgressIndicator(),
+              const SizedBox(height: 15),
+              Text(
+                'Loading Transactions...',
+                style: Theme.of(context).textTheme.bodyLarge!.copyWith(
+                    color: Theme.of(context).colorScheme.onSurface,
+                    fontWeight: FontWeight.bold),
+              ),
+            ],
+          ),
+        ),
+        noItemsFoundIndicatorBuilder: (context) => Center(
+          child: Text(
+            'No transactions yet.',
+            style: Theme.of(context)
+                .textTheme
+                .bodyLarge!
+                .copyWith(color: Theme.of(context).colorScheme.onSurface),
+          ),
+        ),
+      ),
+    );
   }
 }
diff --git a/app/lib/screens/wallets/wallet_assets.dart b/app/lib/screens/wallets/wallet_assets.dart
@@ -29,7 +29,7 @@ class _WalletAssetsWidgetState extends State<WalletAssetsWidget> {
   _listVestedAccounts() async {
     vestedWallets =
         await Stellar.listVestedAccounts(widget.wallet.stellarSecret);
-    setState(() {});
+    if (mounted) setState(() {});
   }
 
   _reloadBalances() async {

diff --git a/app/lib/services/stellar_service.dart b/app/lib/services/stellar_service.dart
@@ -44,10 +44,11 @@ Future<String> getBalance(String secret) async {
   return getBalanceByClient(client);
 }
 
-Future<List<ITransaction>> listTransactions(String secret) async {
+Future<List<ITransaction>> listTransactions(
+    String secret, int offset, int limit) async {
   final client = Client(NetworkType.PUBLIC, secret);
-  final transactions = await client.getTransactions(assetCodeFilter: 'TFT');
-  return transactions;
+  return await client.getTransactions(
+      assetCodeFilter: 'TFT', limit: limit, offset: offset);
 }
 
 Future<List<VestingAccount>?> listVestedAccounts(String secret) async {

diff --git a/app/pubspec.lock b/app/pubspec.lock
@@ -559,6 +559,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.5.1"
+  flutter_staggered_grid_view:
+    dependency: transitive
+    description:
+      name: flutter_staggered_grid_view
+      sha256: "19e7abb550c96fbfeb546b23f3ff356ee7c59a019a651f8f102a4ba9b7349395"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.0"
   flutter_svg:
     dependency: "direct main"
     description:
@@ -762,6 +770,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.3.0"
+  infinite_scroll_pagination:
+    dependency: "direct main"
+    description:
+      name: infinite_scroll_pagination
+      sha256: "4047eb8191e8b33573690922a9e995af64c3949dc87efc844f936b039ea279df"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
   intl:
     dependency: "direct overridden"
     description:
@@ -1456,6 +1472,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.99"
+  sliver_tools:
+    dependency: transitive
+    description:
+      name: sliver_tools
+      sha256: eae28220badfb9d0559207badcbbc9ad5331aac829a88cb0964d330d2a4636a6
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.12"
   smart_auth:
     dependency: transitive
     description:
@@ -1573,7 +1597,7 @@ packages:
     description:
       path: "packages/stellar_client"
       ref: development
-      resolved-ref: "6e1987b236c480912e9b0876267c3f8ecdb901d5"
+      resolved-ref: "2f7f0a8e729c87dc0ab9a973e1eac42b7686bc1c"
       url: "https://github.com/threefoldtech/tfgrid-sdk-dart"
     source: git
     version: "0.1.0"

diff --git a/app/pubspec.yaml b/app/pubspec.yaml
@@ -80,6 +80,7 @@ dependencies:
   flutter_keyboard_visibility: ^6.0.0
   mutex: ^3.1.0
   decimal: ^3.1.0
+  infinite_scroll_pagination: ^4.1.0
 dev_dependencies:
   flutter_test:
     sdk: flutter