Zakaria
48 lines
1.3 KiB
Dart
48 lines
1.3 KiB
Dart
import 'dart:async';
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import 'dart:isolate';
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import 'dart:ui';
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import 'package:flutter_downloader/flutter_downloader.dart';
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class DownloadUpdate {
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DownloadUpdate({
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required this.id,
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required this.status,
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required this.progress,
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});
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final String id;
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final DownloadTaskStatus status;
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final int progress;
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}
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/// This stream is used to provide download updates in the UI. A single callback
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/// in main.dart adds all of flutter_downloader's events to this stream so that
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/// changes can be easily listened to in widgets.
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class DownloadUpdateStream {
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final ReceivePort _port = ReceivePort();
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// ignore: close_sinks
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final _controller = StreamController<DownloadUpdate>.broadcast();
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Stream<DownloadUpdate> get stream => _controller.stream;
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void setupSendPort() {
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IsolateNameServer.registerPortWithName(
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_port.sendPort, 'downloader_send_port');
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_port.listen((dynamic data) {
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String id = data[0];
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DownloadTaskStatus status = DownloadTaskStatus(data[1]);
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int progress = data[2];
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add(DownloadUpdate(
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id: id,
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status: status,
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progress: progress,
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));
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});
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}
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/// Add a new download update to the download update stream.
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void add(DownloadUpdate downloadUpdate) => _controller.add(downloadUpdate);
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}
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