#30 fix: parse mem

lib/view/page/backup.dart

@@ -191,7 +191,7 @@ class BackupPage extends StatelessWidget {
       );
     } catch (e) {
       showSnackBar(context, Text(e.toString()));
-      return;
+      rethrow;
     }
   }
 }

lib/view/page/ping.dart

@@ -85,6 +85,7 @@ class _PingPageState extends State<PingPage>
             doPing();
           } catch (e) {
             showSnackBar(context, Text('Error: \n$e'));
+            rethrow;
           }
         },
         child: const Icon(Icons.play_arrow),
@@ -154,18 +155,14 @@ class _PingPageState extends State<PingPage>
       return;
     }
 
-    try {
-      await Future.wait(_serverProvider.servers.values.map((e) async {
-        if (e.client == null) {
-          return;
-        }
-        final result = await e.client!.run('ping -c 3 $target').string;
-        _results.add(PingResult.parse(e.spi.name, result));
-        setState(() {});
-      }));
-    } catch (e) {
-      showSnackBar(context, Text(e.toString()));
-    }
+    await Future.wait(_serverProvider.servers.values.map((e) async {
+      if (e.client == null) {
+        return;
+      }
+      final result = await e.client!.run('ping -c 3 $target').string;
+      _results.add(PingResult.parse(e.spi.name, result));
+      setState(() {});
+    }));
   }
 
   @override

lib/view/page/private_key/edit.dart

@@ -105,18 +105,16 @@ class _PrivateKeyEditPageState extends State<PrivateKeyEditPage>
           );
         });
         final info = PrivateKeyInfo(name, key, '');
-        bool haveErr = false;
         try {
           info.privateKey = await compute(decyptPem, [key, pwd]);
         } catch (e) {
           showSnackBar(context, Text(e.toString()));
-          haveErr = true;
+          rethrow;
         } finally {
           setState(() {
             _loading = const SizedBox();
           });
         }
-        if (haveErr) return;
         if (widget.info != null) {
           _provider.updateInfo(widget.info!, info);
         } else {

lib/view/page/server/detail.dart

@@ -204,9 +204,9 @@ class _ServerDetailPageState extends State<ServerDetailPage>
   }
 
   Widget _buildMemView(ServerStatus ss) {
-    final used = ss.mem.used / ss.mem.total * 100;
     final free = ss.mem.free / ss.mem.total * 100;
-    final avail = ss.mem.avail / ss.mem.total * 100;
+    final avail = ss.mem.availPercent * 100;
+    final used = ss.mem.usedPercent * 100;
 
     return RoundRectCard(
       Padding(
@@ -245,7 +245,7 @@ class _ServerDetailPageState extends State<ServerDetailPage>
 
   Widget _buildSwapView(ServerStatus ss) {
     if (ss.swap.total == 0) return const SizedBox();
-    final used = ss.swap.used / ss.swap.total * 100;
+    final used = ss.swap.usedPercent * 100;
     final cached = ss.swap.cached / ss.swap.total * 100;
     return RoundRectCard(
       Padding(

lib/view/page/server/tab.dart

@@ -205,7 +205,7 @@ class _ServerPageState extends State<ServerPage>
           mainAxisAlignment: MainAxisAlignment.spaceAround,
           children: [
             _buildPercentCircle(ss.cpu.usedPercent()),
-            _buildPercentCircle(ss.mem.used / ss.mem.total * 100),
+            _buildPercentCircle(ss.mem.usedPercent * 100),
             _buildIOData('Conn:\n${ss.tcp.maxConn}', 'Fail:\n${ss.tcp.fail}'),
             _buildIOData(
                 'Total:\n${rootDisk.size}', 'Used:\n${rootDisk.usedPercent}%')