Snack bars for barcode actions

lib/barcode.dart

@@ -45,28 +45,19 @@ class BarcodeHandler {
     Future<void> onBarcodeUnknown(Map<String, dynamic> data) {
       // Called when the server does not know about a barcode
       // Override this function
-      showErrorDialog(
-        "Invalid Barcode",
-        "Barcode does not match any known item",
-        error: "Barcode Error",
-        icon: FontAwesomeIcons.barcode,
-        onDismissed: () {
-          _controller.resumeCamera();
-        }
+      showSnackIcon(
+        I18N.of(OneContext().context).barcodeNoMatch,
+        success: false,
+        icon: FontAwesomeIcons.qrcode
       );
     }
 
     Future<void> onBarcodeUnhandled(Map<String, dynamic> data) {
       // Called when the server returns an unhandled response
-      showErrorDialog(
-          "Response Data",
-          data.toString(),
-          error: "Unknown Response",
-          onDismissed: () {
+      showServerError(I18N.of(OneContext().context).responseUnknown, data.toString());
+
       _controller.resumeCamera();
     }
-      );
-    }
 
     Future<void> processBarcode(BuildContext context, QRViewController _controller, String barcode, {String url = "barcode/"}) {
       this._context = context;
@@ -93,23 +84,22 @@ class BarcodeHandler {
         final Map<String, dynamic> data = json.decode(response.body);
 
         if (data.containsKey('error')) {
+          _controller.resumeCamera();
           onBarcodeUnknown(data);
         } else if (data.containsKey('success')) {
+          _controller.resumeCamera();
           onBarcodeMatched(data);
         } else {
+          _controller.resumeCamera();
           onBarcodeUnhandled(data);
         }
       }).timeout(
           Duration(seconds: 5)
       ).catchError((error) {
 
-        showErrorDialog(
-          I18N.of(OneContext().context).error,
-            error.toString(),
-            onDismissed: () {
+        showServerError(I18N.of(OneContext().context).error, error.toString());
         _controller.resumeCamera();
-            }
-        );
+
         return;
       });
     }
@@ -129,30 +119,10 @@ class BarcodeScanHandler extends BarcodeHandler {
   Future<void> onBarcodeUnknown(Map<String, dynamic> data) {
 
     showSnackIcon(
-        "No barcode",
+        I18N.of(OneContext().context).barcodeNoMatch,
         icon: FontAwesomeIcons.exclamationCircle,
-        actionText: "Details",
-        onAction: () {
-          print("Action!");
-        },
-        success: true,
+        success: false,
     );
-
-    _controller.resumeCamera();
-
-    /*
-    showErrorDialog(
-        _context,
-        data['error'] ?? '',
-        data['plugin'] ?? 'No barcode plugin information',
-        error: "Barcode Error",
-        icon: FontAwesomeIcons.barcode,
-        onDismissed: () {
-          _controller.resumeCamera();
-        }
-    );
-
-     */
   }
 
   @override
@@ -175,7 +145,10 @@ class BarcodeScanHandler extends BarcodeHandler {
           }
         });
       } else {
-        // TODO - Show an error here!
+        showSnackIcon(
+          I18N.of(OneContext().context).invalidStockLocation,
+          success: false
+        );
       }
 
     } else if (data.containsKey('stockitem')) {
@@ -188,7 +161,10 @@ class BarcodeScanHandler extends BarcodeHandler {
           Navigator.push(_context, MaterialPageRoute(builder: (context) => StockDetailWidget(item)));
         });
       } else {
-        // TODO - Show an error here!
+        showSnackIcon(
+            I18N.of(OneContext().context).invalidStockItem,
+            success: false
+        );
       }
     } else if (data.containsKey('part')) {
 
@@ -200,9 +176,16 @@ class BarcodeScanHandler extends BarcodeHandler {
           Navigator.push(_context, MaterialPageRoute(builder: (context) => PartDetailWidget(part)));
         });
       } else {
-        // TODO - Show an error here!
+        showSnackIcon(
+            I18N.of(OneContext().context).invalidPart,
+            success: false
+        );
       }
     } else {
+      showSnackIcon(
+        I18N.of(OneContext().context).barcodeUnknown,
+        success: false,
+        onAction: () {
           showDialog(
               context: _context,
               child: SimpleDialog(
@@ -216,6 +199,8 @@ class BarcodeScanHandler extends BarcodeHandler {
               )
           );
         }
+      );
+    }
   }
 }
 
@@ -235,12 +220,10 @@ class StockItemBarcodeAssignmentHandler extends BarcodeHandler {
   @override
   Future<void> onBarcodeMatched(Map<String, dynamic> data) {
     // If the barcode is known, we can't asisgn it to the stock item!
-    showErrorDialog(
-      "Barcode in Use",
-      "Barcode is already known",
-      onDismissed: () {
-        _controller.resumeCamera();
-      }
+    showSnackIcon(
+      I18N.of(OneContext().context).barcodeInUse,
+      icon: FontAwesomeIcons.qrcode,
+      success: false
     );
   }
 
@@ -249,14 +232,9 @@ class StockItemBarcodeAssignmentHandler extends BarcodeHandler {
     // If the barcode is unknown, we *can* assign it to the stock item!
 
     if (!data.containsKey("hash")) {
-      showErrorDialog(
-        "Missing Data",
-        "Missing hash data from server",
-        onDismissed: () {
-          _controller.resumeCamera();
-        }
-      );
+      showServerError("Missing data", "Barcode hash data missing from response");
     } else {
+
       // Send the 'hash' code as the UID for the stock item
       item.update(
         _context,
@@ -265,22 +243,22 @@ class StockItemBarcodeAssignmentHandler extends BarcodeHandler {
         }
       ).then((result) {
         if (result) {
-          showInfoDialog(
-              _context,
-              "Barcode Set",
-              "Barcode assigned to stock item",
-              onDismissed: () {
+
+          // Close the barcode scanner
           _controller.dispose();
           Navigator.of(_context).pop();
-              }
+
+          showSnackIcon(
+            I18N.of(OneContext().context).barcodeAssigned,
+            success: true,
+            icon: FontAwesomeIcons.qrcode
           );
         } else {
-          showErrorDialog(
-            "Server Error",
-            "Could not assign barcode",
-            onDismissed: () {
-              _controller.resumeCamera();
-            }
+
+          showSnackIcon(
+              I18N.of(OneContext().context).barcodeNotAssigned,
+              success: false,
+              icon: FontAwesomeIcons.qrcode
           );
         }
       });
@@ -393,14 +371,23 @@ class StockItemScanIntoLocationHandler extends BarcodeHandler {
       // Transfer stock to specified location
       item.transferStock(location).then((response) {
         print("Response: ${response.statusCode}");
+
+        // Close the scanner
         _controller.dispose();
         Navigator.of(_context).pop();
+
+        showSnackIcon(
+          I18N.of(OneContext().context).barcodeScanIntoLocationSuccess,
+          success: true,
+        );
+
       });
     } else {
-      // Display a snack bar with the error
-      OneContext().showSnackBar(builder: (context) => SnackBar(
-        content: Text("This was not a stock item!")
-      ));
+      showSnackIcon(
+        I18N.of(OneContext().context).invalidStockLocation,
+        success: false,
+      );
+
     }
   }
 }

lib/widget/snacks.dart

@@ -24,8 +24,18 @@ void showSnackIcon(String text, {IconData icon, Function onAction, bool success,
   if (success == true) {
     backgroundColor = Colors.lightGreen;
 
+    // Select an icon if we do not have an action
+    if (icon == null && onAction == null) {
+      icon = FontAwesomeIcons.checkCircle;
+    }
+
   } else if (success == false) {
     backgroundColor = Colors.deepOrange;
+
+    if (icon == null && onAction == null) {
+      icon = FontAwesomeIcons.exclamationCircle;
+    }
+
   }
 
   SnackBarAction action;

lib/widget/stock_detail.dart

@@ -245,6 +245,26 @@ class _StockItemDisplayState extends RefreshableState<StockDetailWidget> {
   }
 
 
+  void _unassignBarcode(BuildContext context) async {
+
+    final bool result = await item.update(context, values: {'uid': ''});
+
+    if (result) {
+      showSnackIcon(
+        I18N.of(context).stockItemUpdateSuccess,
+        success: true
+      );
+    } else {
+      showSnackIcon(
+        I18N.of(context).stockItemUpdateFailure,
+        success: false,
+      );
+    }
+
+    refresh();
+  }
+
+
   void _transferStock(BuildContext context, InvenTreeStockLocation location) async {
     Navigator.of(context).pop();
 
@@ -568,7 +588,7 @@ class _StockItemDisplayState extends RefreshableState<StockDetailWidget> {
     if (item.uid.isEmpty) {
       tiles.add(
         ListTile(
-          title: Text(I18N.of(context).assignBarcode),
+          title: Text(I18N.of(context).barcodeAssign),
           leading: FaIcon(FontAwesomeIcons.barcode),
           trailing: FaIcon(FontAwesomeIcons.qrcode),
           onTap: () {
@@ -581,6 +601,16 @@ class _StockItemDisplayState extends RefreshableState<StockDetailWidget> {
           }
         )
       );
+    } else {
+      tiles.add(
+        ListTile(
+          title: Text(I18N.of(context).barcodeUnassign),
+          leading: FaIcon(FontAwesomeIcons.barcode),
+          onTap: () {
+            _unassignBarcode(context);
+          }
+        )
+      );
     }
 
     return tiles;