34 lines
1.1 KiB
Dart
34 lines
1.1 KiB
Dart
import 'dart:typed_data';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:pdf_signature/data/model/model.dart';
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class SignatureLibraryController extends StateNotifier<List<SignatureAsset>> {
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SignatureLibraryController() : super(const []);
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String add(Uint8List bytes, {String? name}) {
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// Always add a new asset (allow duplicates). This lets users create multiple cards
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// even when loading the same image repeatedly for different adjustments/usages.
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if (bytes.isEmpty) return '';
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final id = DateTime.now().microsecondsSinceEpoch.toString();
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state = List.of(state)
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..add(SignatureAsset(id: id, bytes: bytes, name: name));
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return id;
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}
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void remove(String id) {
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state = state.where((a) => a.id != id).toList(growable: false);
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}
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SignatureAsset? byId(String id) {
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for (final a in state) {
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if (a.id == id) return a;
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}
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return null;
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}
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}
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final signatureLibraryProvider =
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StateNotifierProvider<SignatureLibraryController, List<SignatureAsset>>(
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(ref) => SignatureLibraryController(),
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);
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