* Fixed Focus issues in Grid

OrdersManagement/Components/Pages/WarehousePackList.razor

@@ -37,7 +37,7 @@
                                CssClass="e-outline"/>
                     <label for="textBox" class="form-label">Zeskanowana wartość:</label>
                     <SfTextBox ID="scannedValue" ValueChange="ScanValue" @bind-Value="ScannedValue"
-                               CssClass="e-outline" @ref="_scanner" />
+                               CssClass="e-outline" @ref="_scanner"/>
                 </CardContent>
             </SfCard>
             <SfGrid @ref="_grid"
@@ -53,7 +53,8 @@
                         <ToolbarItem Type="ItemType.Button" Text="Zapisz zmiany" Id="SaveButton"
                                      PrefixIcon="e-icons e-save" OnClick="SaveChanges"/>
                         <ToolbarItem Type="ItemType.Button" Text="Podziel Linię" Id="SplitLineButton"
-                                     PrefixIcon="e-icons e-split-horizontal" OnClick="ShowSplitDialog" Disabled="IsDisabled"/>
+                                     PrefixIcon="e-icons e-split-horizontal" OnClick="ShowSplitDialog"
+                                     Disabled="IsDisabled"/>
                         <ToolbarItem Type="ItemType.Button" Id="Generuj XLS i Wyślij" PrefixIcon="e-icons e-export-xls"
                                      Text="Generuj XLS i Wyślij" OnClick="ExportXls"/>
                     </ToolbarItems>
@@ -72,7 +73,8 @@
                                 HeaderText="Ilość w Dostawie" Width="80"></GridColumn>
                     <GridColumn Field=@nameof(WzRowMeyleDto.PalletNumber) AllowEditing="true"
                                 TextAlign="TextAlign.Center" HeaderText="Nr Palety" Width="100"></GridColumn>
-                    <GridColumn Field=@nameof(WzRowMeyleDto.PartNumberSl) AllowEditing="true" TextAlign="TextAlign.Center"
+                    <GridColumn Field=@nameof(WzRowMeyleDto.PartNumberSl) AllowEditing="true"
+                                TextAlign="TextAlign.Center"
                                 HeaderText="Nr Partii SL" Width="80"></GridColumn>
                     <GridColumn Field=@nameof(WzRowMeyleDto.PartNumber) AllowEditing="true" TextAlign="TextAlign.Center"
                                 HeaderText="Nr Partii Meyle" Width="80"></GridColumn>
@@ -114,15 +116,17 @@
                 <DialogButton Content="OK" IsPrimary="true" OnClick="@HideModal"/>
             </DialogButtons>
         </SfDialog>
-        
+
         <SfDialog Width="500px" Title="Błąd" IsModal="true" @bind-Visible="VisibilityValidation" AllowPrerender="true">
             <DialogTemplates>
                 <Content>
                     <p>Błąd skanowania! Wystąpił jeden z wyjątków (Zeskanowana wartość '<b>@ScannedValue</b>'):</p>
                     <ul>
                         <li><p>Zeskanowano niepoprawny Numer Partii SL (nieistniejący w tabeli)</p></li>
-                        <li><p>Zeskanowano niepoprawny numer Partii Meyle (niezaczynający się od <b>@($"{DateTime.Now.Year - 2000}X")</b>)</p></li>
-                        <li><p>Numer Palety nie jest większy niż 0 (aktualnie wybrany numer palety: '<b>@PalletNumber</b>')</p></li>
+                        <li><p>Zeskanowano niepoprawny numer Partii Meyle (niezaczynający się od
+                                <b>@($"{DateTime.Now.Year - 2000}X")</b>)</p></li>
+                        <li><p>Numer Palety nie jest większy niż 0 (aktualnie wybrany numer palety:
+                                '<b>@PalletNumber</b>')</p></li>
                     </ul>
                 </Content>
             </DialogTemplates>
@@ -131,10 +135,24 @@
             </DialogButtons>
         </SfDialog>
 
-        <SfDialog Width="500px" Title="Podziel Linię" IsModal="true" @bind-Visible="VisibilityLineSplitter" AllowPrerender="true">
+        <SfDialog Width="500px" Title="Błąd" IsModal="true" @bind-Visible="VisibilityPalletNumber"
+                  AllowPrerender="true">
             <DialogTemplates>
                 <Content>
-                    <label for="textBox" class="form-label">Podziel linię <b>@SelectedRow?.FaIndex</b> podając ilość sztuk dla nowej linii:</label>
+                    <p>Błąd skanowania! <b>Wybierz NUMER PALETY większy niż 0</b> (Aktualnie '@PalletNumber'):</p>
+                </Content>
+            </DialogTemplates>
+            <DialogButtons>
+                <DialogButton Content="OK" IsPrimary="true" OnClick="@HideModal"/>
+            </DialogButtons>
+        </SfDialog>
+
+        <SfDialog Width="500px" Title="Podziel Linię" IsModal="true" @bind-Visible="VisibilityLineSplitter"
+                  AllowPrerender="true">
+            <DialogTemplates>
+                <Content>
+                    <label for="textBox" class="form-label">Podziel linię <b>@SelectedRow?.FaIndex</b> podając ilość
+                        sztuk dla nowej linii:</label>
                     <SfTextBox ID="newQuantity" Type="InputType.Number" @bind-Value="@NewQuantity"
                                CssClass="e-outline"/>
                 </Content>
@@ -165,13 +183,14 @@
     private List<WzRowMeyleDto> SelectedRows { get; set; } = new();
 
     private string WzNumber { get; set; } = string.Empty;
-    
+
     private bool _isValid;
 
     private bool Visibility { get; set; }
     private bool VisibilityValidation { get; set; }
     private bool VisibilityLineSplitter { get; set; }
-    
+    public bool VisibilityPalletNumber { get; set; }
+
     private string? EmailAddresses { get; set; } = string.Empty;
     private string PalletNumber { get; set; } = "0";
 
@@ -187,6 +206,7 @@
         Visibility = false;
         VisibilityValidation = false;
         VisibilityLineSplitter = false;
+        VisibilityPalletNumber = false;
 
         LastScannedValue = ScannedValue;
         ScannedValue = string.Empty;
@@ -200,9 +220,9 @@
         {
             _wzHeader = await WarehouseService.GetWzHeaderByIdAsync(WzHeader);
             WzRowsMeyle = (await WarehouseService.GetWzRowsByWzHeaderId(WzHeader)).ToList();
-            
+
             TransactionModelsByPartNumber = await GetTransactionModels();
-            
+
             EmailAddresses = _wzHeader.EmailAddresses;
 
             WzNumber = _wzHeader.WzNumbers ?? string.Empty;
@@ -213,7 +233,7 @@
     }
 
     private async Task SaveChanges()
-    {   
+    {
         if (!string.IsNullOrWhiteSpace(EmailAddresses))
         {
             await WarehouseService.AddEmailsToWzHeaderAsync(WzHeader, EmailAddresses);
@@ -258,21 +278,21 @@
         if (string.IsNullOrWhiteSpace(obj.Value)) return;
         if (int.Parse(PalletNumber) <= 0)
         {
-            ShowValidationMessage();
+            VisibilityPalletNumber = true;
             return;
         }
 
         ScannedValue = obj.Value.Trim();
-        
+
         StateHasChanged();
-        
+
         TransactionModelsByPartNumber.TryGetValue(obj.Value.Trim(), out List<TransactionModel>? materialTransactionsByPartNumber);
         TransactionModel? materialTransactionByPartNumber = materialTransactionsByPartNumber?.FirstOrDefault();
 
         if (materialTransactionByPartNumber == null && IsValidScannedValue(obj.Value))
         {
             FillMeylePartNumber(ScannedValue);
-            
+
             LastScannedValue = ScannedValue;
             ScannedValue = string.Empty;
 
@@ -290,7 +310,7 @@
             ShowValidationMessage();
             return;
         }
-        
+
         LastScannedValue = ScannedValue;
         ScannedValue = string.Empty;
 
@@ -306,13 +326,12 @@
         return scannedValue.StartsWith(format);
     }
 
-    private void FillMeylePartNumber(string scannedValue)
-    {   
-        if (SelectedRow != null)
+    private async Task FillMeylePartNumber(string scannedValue)
+    {
+        var rowIndex = WzRowsMeyle.FindIndex(x => x.FaIndex == SelectedRow?.FaIndex && x.Quantity == SelectedRow?.Quantity);
+
+        if (SelectedRow != null && !SelectedRows.Any())
         {
-            var rowIndex = WzRowsMeyle.FindIndex(x => x.FaIndex == SelectedRow?.ItemNumber && x.Quantity == SelectedRow?.Quantity);
-            FocusGridRow(rowIndex);
-            
             SelectedRow.PartNumber = scannedValue;
             ChangedRecords.Add(SelectedRow);
         }
@@ -323,65 +342,92 @@
             ChangedRecords.Add(wzRowMeyleDto);
         }
 
-        SaveChanges();
-        InvokeAsync(StateHasChanged);
-        _grid.Refresh();
-        _scanner.FocusAsync();
+        await SaveChanges();
+        
         ChangedRecords.Clear();
+        SelectedRows.Clear();
+
+        FocusGridRow(rowIndex);
+        await _scanner.FocusAsync();
     }
 
-    private void FillFaPartNumberAndPalletNumber(TransactionModel materialTransactionByPartNumber, string scannedValue)
+    private async Task FillFaPartNumberAndPalletNumber(TransactionModel materialTransactionByPartNumber, string scannedValue)
     {
-        var rowIndex = WzRowsMeyle.FindIndex(x => x.FaIndex == materialTransactionByPartNumber.ItemNumber && x.Quantity == materialTransactionByPartNumber.Quantity);
+        await _grid.ClearSelectionAsync();
+        await _grid.Refresh();
+        await InvokeAsync(StateHasChanged);
+
+        List<int> selectedIndices = new List<int>();
+        int palletNumber = int.Parse(PalletNumber);
+        int rowIndex = WzRowsMeyle.FindIndex(x => x.FaIndex == materialTransactionByPartNumber.ItemNumber && x.Quantity == materialTransactionByPartNumber.Quantity);
 
         switch (rowIndex)
         {
-            case -1 when int.Parse(PalletNumber) <= 0:
-                ShowValidationMessage();
-                LastScannedValue = ScannedValue;
-                ScannedValue = string.Empty;
-                return;
             case -1:
             {
                 SelectedRows = WzRowsMeyle.Where(x => x.FaIndex == materialTransactionByPartNumber.ItemNumber).ToList();
-            
+
                 if (SelectedRows.Count == 0)
                 {
                     ShowValidationMessage();
                     return;
                 }
 
-                foreach (WzRowMeyleDto wzRowMeyleDto in SelectedRows)
+                rowIndex = WzRowsMeyle.FindIndex(x => x.FaIndex == SelectedRows.First().FaIndex && x.Quantity == SelectedRows.First().Quantity);
+
+                var validCombinations = FindCombinations(SelectedRows, (int?)materialTransactionByPartNumber.Quantity ?? 0);
+
+                foreach (var combination in validCombinations)
                 {
-                    wzRowMeyleDto.PartNumberSl = scannedValue;
-                    ChangedRecords.Add(wzRowMeyleDto);
+                    foreach (var record in combination)
+                    {
+                        record.PartNumberSl = scannedValue;
+                        ChangedRecords.Add(record);
+
+                        int index = WzRowsMeyle.IndexOf(record);
+                        if (index >= 0)
+                        {
+                            selectedIndices.Add(index);
+                            Console.WriteLine($"Dodano indeks: {index}"); // Debugowanie
+                        }
+                    }
                 }
 
+                SelectedRows.Clear();
+                SelectedRows.AddRange(ChangedRecords);
+
                 break;
             }
             default:
             {
-                FocusGridRow(rowIndex);
-                
                 SelectedRow = WzRowsMeyle[rowIndex];
+                selectedIndices.Add(rowIndex);
 
-                SelectedRow.PartNumberSl = ScannedValue;
-                SelectedRow.PalletNumber = int.Parse(PalletNumber);
+                SelectedRow.PartNumberSl = scannedValue;
+                SelectedRow.PalletNumber = palletNumber;
 
                 if (ChangedRecords.All(x => x.TransactionNumber != SelectedRow.TransactionNumber))
                 {
                     ChangedRecords.Add(SelectedRow);
                 }
-                
+
                 break;
             }
         }
 
-        SaveChanges();
-        InvokeAsync(StateHasChanged);
-        _grid.Refresh();
-        _scanner.FocusAsync();
+        await SaveChanges();
         ChangedRecords.Clear();
+
+        if (selectedIndices.Any())
+        {
+            await _grid.SelectRowsAsync(selectedIndices.ToArray());
+        }
+
+        await _grid.Refresh();
+        await InvokeAsync(StateHasChanged);
+
+        FocusGridRow(rowIndex);
+        await _scanner.FocusAsync();
     }
 
     private void FocusGridRow(int rowIndex)
@@ -391,10 +437,10 @@
             int pageSize = _grid.PageSettings.PageSize;
             int targetPage = (rowIndex / pageSize) + 1;
             _grid.GoToPageAsync(targetPage);
-                
+
             rowIndex %= pageSize;
         }
-            
+
         _grid.SelectRowAsync(rowIndex);
         _grid.ScrollIntoViewAsync(rowIndex: rowIndex);
         _grid.FocusAsync();
@@ -438,18 +484,20 @@
                 OrderNumber = SelectedRow.OrderNumber,
                 PalletNumber = SelectedRow.PalletNumber,
                 WzNumber = SelectedRow.WzNumber,
-                TransactionNumber = SelectedRow.TransactionNumber += 10000
+                TransactionNumber = SelectedRow.TransactionNumber += 10000,
+                PartNumberSl = SelectedRow.PartNumberSl,
+                PartNumber = SelectedRow.PartNumber
             };
-            
+
             WzRowsMeyle.Add(splitRow);
             SelectedRow.Quantity -= newQuantity;
-            
+
             ChangedRecords.Add(SelectedRow);
 
             await WarehouseService.CreateWzRowsMeyleAsync(new List<WzRowMeyleDto> { splitRow });
             await UpdateRows(ChangedRecords);
-        } 
-        
+        }
+
         VisibilityLineSplitter = false;
     }
 
@@ -464,4 +512,32 @@
         SelectedRow = obj.Data;
     }
 
+    private List<List<WzRowMeyleDto>> FindCombinations(List<WzRowMeyleDto> records, int targetSum)
+    {
+        var result = new List<List<WzRowMeyleDto>>();
+        var currentCombination = new List<WzRowMeyleDto>();
+
+        void Backtrack(int start, int currentSum)
+        {
+            if (currentSum == targetSum)
+            {
+                result.Add(new List<WzRowMeyleDto>(currentCombination));
+                return;
+            }
+
+            for (int i = start; i < records.Count; i++)
+            {
+                if (currentSum + records[i].Quantity <= targetSum)
+                {
+                    currentCombination.Add(records[i]);
+                    Backtrack(i + 1, currentSum + records[i].Quantity ?? 0);
+                    currentCombination.RemoveAt(currentCombination.Count - 1);
+                }
+            }
+        }
+
+        Backtrack(0, 0);
+        return result;
+    }
+
 }