import 'dart:io'; import 'package:provider/provider.dart'; import 'package:flutter/material.dart'; import '../state/download_state.dart'; import '../episodes/episodedetail.dart'; import '../util/pageroute.dart'; class DownloadList extends StatefulWidget { DownloadList({Key key}) : super(key: key); @override _DownloadListState createState() => _DownloadListState(); } Widget _downloadButton(EpisodeTask task, BuildContext context) { var downloader = Provider.of(context, listen: false); switch (task.status.value) { case 2: return IconButton( icon: Icon( Icons.pause_circle_filled, ), onPressed: () => downloader.pauseTask(task.episode), ); case 4: return Row( mainAxisSize: MainAxisSize.min, children: [ IconButton( icon: Icon(Icons.refresh), onPressed: () => downloader.retryTask(task.episode), ), IconButton( icon: Icon(Icons.close), onPressed: () => downloader.delTask(task.episode), ), ], ); case 6: return IconButton( icon: Icon(Icons.play_circle_filled), onPressed: () => downloader.resumeTask(task.episode), ); break; default: return Center(); } } class _DownloadListState extends State { @override Widget build(BuildContext context) { return SliverPadding( padding: EdgeInsets.zero, sliver: Consumer(builder: (_, downloader, __) { var tasks = downloader.episodeTasks .where((task) => task.status.value != 3) .toList(); return tasks.length > 0 ? SliverPadding( padding: EdgeInsets.all(5.0), sliver: SliverList( delegate: SliverChildBuilderDelegate( (BuildContext context, int index) { return ListTile( onTap: () => Navigator.push( context, ScaleRoute( page: EpisodeDetail( episodeItem: tasks[index].episode, )), ), title: Row( mainAxisSize: MainAxisSize.min, mainAxisAlignment: MainAxisAlignment.start, children: [ Expanded( flex: 5, child: Container( child: Text( tasks[index].episode.title, maxLines: 1, overflow: TextOverflow.ellipsis, ), ), ), Expanded( flex: 1, child: tasks[index].progress >= 0 ? Container( width: 40.0, padding: EdgeInsets.symmetric(horizontal: 2), alignment: Alignment.center, decoration: BoxDecoration( borderRadius: BorderRadius.all( Radius.circular(6)), color: Colors.red), child: Text( tasks[index].progress.toString() + '%', style: TextStyle(color: Colors.white), )) : Container(), ), ], ), subtitle: SizedBox( height: 2, child: LinearProgressIndicator( value: tasks[index].progress / 100, ), ), leading: CircleAvatar( backgroundImage: FileImage( File("${tasks[index].episode.imagePath}")), ), trailing: Container( width: 50, height: 50, child: _downloadButton(tasks[index], context)), ); }, childCount: tasks.length, ), ), ) : SliverToBoxAdapter( child: Center(), ); }), ); } }