41 lines
1.1 KiB
Dart
41 lines
1.1 KiB
Dart
import 'dart:async';
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import 'package:aves/model/entry.dart';
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import 'package:aves/model/multipage.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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class MultiPageController {
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final AvesEntry entry;
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final ValueNotifier<int?> pageNotifier = ValueNotifier(null);
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bool _disposed = false;
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MultiPageInfo? _info;
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final StreamController<MultiPageInfo?> _infoStreamController = StreamController.broadcast();
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Stream<MultiPageInfo?> get infoStream => _infoStreamController.stream;
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MultiPageInfo? get info => _info;
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int? get page => pageNotifier.value;
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set page(int? page) => pageNotifier.value = page;
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MultiPageController(this.entry) {
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entry.getMultiPageInfo().then((value) {
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if (value == null || _disposed) return;
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pageNotifier.value = value.defaultPage?.index ?? 0;
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_info = value;
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_infoStreamController.add(_info);
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});
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}
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void dispose() {
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_disposed = true;
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pageNotifier.dispose();
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}
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@override
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String toString() => '$runtimeType#${shortHash(this)}{entry=$entry, page=$page, info=$info}';
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}
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