Initial commit

lib/ui/downloads_screen.dart

@@ -0,0 +1,113 @@
+import 'package:filesize/filesize.dart';
+import 'package:flutter/material.dart';
+
+import 'cached_image.dart';
+import '../api/download.dart';
+
+
+class DownloadTile extends StatelessWidget {
+
+  final Download download;
+  DownloadTile(this.download);
+
+  String get subtitle {
+    switch (download.state) {
+      case DownloadState.NONE: return '';
+      case DownloadState.DOWNLOADING:
+        return '${filesize(download.received)} / ${filesize(download.total)}';
+      case DownloadState.POST:
+        return 'Post processing...';
+      case DownloadState.DONE:
+        return 'Done'; //Shouldn't be visible
+    }
+    return '';
+  }
+
+  Widget get progressBar {
+    switch (download.state) {
+      case DownloadState.DOWNLOADING:
+        return LinearProgressIndicator(value: download.received / download.total);
+      case DownloadState.POST:
+        return LinearProgressIndicator();
+      default:
+        return Container(height: 0, width: 0,);
+    }
+  }
+
+  Widget get trailing {
+    if (download.private) {
+      return Icon(Icons.offline_pin);
+    }
+    return Icon(Icons.sd_card);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      children: <Widget>[
+        ListTile(
+          title: Text(download.track.title),
+          subtitle: Text(subtitle),
+          leading: CachedImage(
+            url: download.track.albumArt.thumb,
+          ),
+          trailing: trailing,
+        ),
+        progressBar
+      ],
+    );
+  }
+}
+
+class DownloadsScreen extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Downloads'),
+      ),
+      body: ListView(
+        children: <Widget>[
+          StreamBuilder(
+            stream: Stream.periodic(Duration(milliseconds: 500)), //Periodic to get current download progress
+            builder: (BuildContext context, AsyncSnapshot snapshot) {
+
+              if (downloadManager.queue.length == 0)
+                return Container(width: 0, height: 0,);
+
+              return Column(
+                children: List.generate(downloadManager.queue.length, (i) {
+                  return DownloadTile(downloadManager.queue[i]);
+                })
+              );
+            },
+          ),
+          FutureBuilder(
+            future: downloadManager.getFinishedDownloads(),
+            builder: (context, snapshot) {
+              if (!snapshot.hasData || snapshot.data.length == 0) return Container(height: 0, width: 0,);
+
+              return Column(
+                children: <Widget>[
+                  Divider(),
+                  Text(
+                    'History',
+                    style: TextStyle(
+                      fontSize: 24.0,
+                      fontWeight: FontWeight.bold
+                    ),
+                  ),
+                  ...List.generate(snapshot.data.length, (i) {
+                    Download d = snapshot.data[i];
+                    return DownloadTile(d);
+                  })
+                ],
+              );
+            },
+          )
+        ],
+      )
+    );
+  }
+}