implemented copying data from MultiFormatDataView

MultiTerm.Core/Helpers/ByteDataViewModelHelpers.cs

@@ -0,0 +1,78 @@
+using MultiTerm.Core.ViewModel;
+using System.Text;
+
+namespace MultiTerm.Core.Helpers;
+
+public static class ByteDataViewModelHelpers
+{
+    public static string GetCharacterStringOfBytesDataViewModels(IEnumerable<ByteDataViewModel> collection)
+    {
+        StringBuilder stringBuilder = new StringBuilder();
+        int prevLineIdentifier = collection.First().LineIdentifier;
+
+        foreach (var item in collection)
+        {
+            // add newline if line identifier increased
+            if(item.LineIdentifier > prevLineIdentifier)
+            {
+                stringBuilder.Append(Environment.NewLine);
+            }
+            prevLineIdentifier = item.LineIdentifier;
+            // add item as character
+            stringBuilder.Append(item.DisplayStringChar);
+        }
+        return stringBuilder.ToString();
+    }
+
+    public static string GetHexadecimalStringOfBytesDataViewModels(IEnumerable<ByteDataViewModel> collection)
+    {
+        StringBuilder stringBuilder = new StringBuilder();
+        int prevLineIdentifier = collection.First().LineIdentifier;
+
+        foreach (var item in collection)
+        {
+            // add newline if line identifier increased
+            if (item.LineIdentifier > prevLineIdentifier)
+            {
+                stringBuilder.Append(Environment.NewLine);
+            }
+            prevLineIdentifier = item.LineIdentifier;
+
+            // add item as hex byte
+            stringBuilder.Append(item.DisplayStringHex);
+
+            // add spacing if it is not the last item
+            if (item != collection.Last())
+            {
+                stringBuilder.Append(' ');
+            }
+        }
+        return stringBuilder.ToString();
+    }
+
+    public static string GetBinaryStringOfEBytesDataViewModels(IEnumerable<ByteDataViewModel> collection)
+    {
+        StringBuilder stringBuilder = new StringBuilder();
+        int prevLineIdentifier = collection.First().LineIdentifier;
+
+        foreach (var item in collection)
+        {
+            // add newline if line identifier increased
+            if (item.LineIdentifier > prevLineIdentifier)
+            {
+                stringBuilder.Append(Environment.NewLine);
+            }
+            prevLineIdentifier = item.LineIdentifier;
+
+            // add item as binary byte
+            stringBuilder.Append(item.DisplayStringBin);
+
+            // add spacing if it is not the last item
+            if (item != collection.Last())
+            {
+                stringBuilder.Append(' ');
+            }
+        }
+        return stringBuilder.ToString();
+    }
+}

MultiTerm.Core/ViewModel/ByteDataViewModel.cs

@@ -1,15 +1,14 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 using MultiTerm.Protocols.Model;
-using System.Text;
 
 namespace MultiTerm.Core.ViewModel;
 
-public partial class ByteDataViewModel : ObservableObject, IDataViewModel, IComparable<ByteDataViewModel>
+public partial class ByteDataViewModel : ObservableObject, IDataViewModel, IComparable<ByteDataViewModel>, ICloneable
 {
     /// <summary>
     /// Object of data model. 
     /// </summary>
-    private readonly ExtendedByte data;
+    internal readonly ExtendedByte Data;
 
     #region IDataViewModel Implementation
 
@@ -30,11 +29,6 @@ public partial class ByteDataViewModel : ObservableObject, IDataViewModel, IComp
 
     #endregion
 
-    /// <summary>
-    /// Allows access to the low level data byte.
-    /// </summary>
-    public byte Byte => this.data.Byte;
-
     /// <summary>
     /// Instanciates new <see cref="ByteDataViewModel"/>.
     /// Initializes internal variables with data according to <paramref name="extendedByte"/>.
@@ -43,7 +37,7 @@ public partial class ByteDataViewModel : ObservableObject, IDataViewModel, IComp
     /// <param name="lineIdentifier">identifies line in which this byte is located</param>
     public ByteDataViewModel(ExtendedByte extendedByte, int lineIdentifier)
     {
-        this.data = extendedByte;
+        this.Data = extendedByte;
         this.lineIdentifier = lineIdentifier;
         this.DisplayStringChar = extendedByte.ToCharacterString();
         this.DisplayStringHex = extendedByte.ToHexString();
@@ -71,4 +65,11 @@ public partial class ByteDataViewModel : ObservableObject, IDataViewModel, IComp
     }
 
     #endregion
+
+    #region ICloneable Implementation
+    public object Clone()
+    {
+        return this.MemberwiseClone();
+    }
+    #endregion
 }

MultiTerm.Core/ViewModel/MultiFormatDataViewModel.cs

@@ -2,6 +2,7 @@
 using Common.Helpers;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
+using MultiTerm.Core.Helpers;
 using MultiTerm.Core.Types;
 using MultiTerm.Protocols.Model;
 using System.Collections.ObjectModel;
@@ -149,6 +150,26 @@ public partial class MultiFormatDataViewModel : ObservableObject
         }
     }
 
+    public string GetSelectedDataAsString(FormatType format)
+    {
+        // nothing selected => return empty string
+        if(this.Selected == null || this.Selected.Count == 0) { return string.Empty; }
+
+        // shallow copy of the selected items
+        var selectedCopy = this.Selected.Select(item => (ByteDataViewModel)item.Clone()).ToList();
+
+        string dataAsString = string.Empty;
+        dataAsString = format switch
+        {
+            FormatType.Character => ByteDataViewModelHelpers.GetCharacterStringOfBytesDataViewModels(selectedCopy),
+            FormatType.Hexadecimal => ByteDataViewModelHelpers.GetHexadecimalStringOfBytesDataViewModels(selectedCopy),
+            FormatType.Binary => ByteDataViewModelHelpers.GetBinaryStringOfEBytesDataViewModels(selectedCopy),
+            _ => throw new ArgumentException($"'{GetSelectedDataAsString}()' does not have handling implemented for {nameof(FormatType)} {format}")
+        };
+
+        return dataAsString;
+    }
+
     #region Collection Manipulation
     /// <summary>
     /// Function that reorders a given collection with item type <see cref="ByteDataViewModel"/> using the given <paramref name="newlineSeparatorType"/>.
@@ -173,7 +194,7 @@ public partial class MultiFormatDataViewModel : ObservableObject
             newCollection.Add(item);
             stringBuilder.Append(item.DisplayStringChar);
 
-            switch (ShouldIntroduceNewlineAfterThisByte(item.Byte, previousBytes, newlineSeparatorType))
+            switch (ShouldIntroduceNewlineAfterThisByte(item.Data.Byte, previousBytes, newlineSeparatorType))
             {
                 case ShouldIntroduceNewlineAfterThisByteResult.NoNewline:
                     // a decision could be made, previousBytes can be cleared
@@ -194,7 +215,7 @@ public partial class MultiFormatDataViewModel : ObservableObject
                     // first time that more bytes are required => create new list
                     previousBytes ??= new List<byte>();
                     // add current byte to list
-                    previousBytes.Add(item.Byte);
+                    previousBytes.Add(item.Data.Byte);
                     break;
 
                 default:

MultiTerm.Wpf.CustomControl/MultiFormatDataView/MultiFormatDataView.cs

@@ -9,6 +9,7 @@ using System.Linq;
 using System.Collections.Specialized;
 using System.Collections.ObjectModel;
 using System.Diagnostics;
+using System.Windows.Input;
 
 namespace MultiTerm.Wpf.CustomControl;
 
@@ -57,6 +58,9 @@ public class MultiFormatDataView : Control
 
     public static readonly RoutedEvent ClearRequestedEvent;
 
+    public static readonly DependencyProperty CopyCommandProperty =
+        DependencyProperty.Register("CopyCommand", 
+        typeof(RoutedCommand), typeof(MultiFormatDataView));
 
     /// <summary>
     /// .NET Property for <see cref="DataSourceProperty"/>.
@@ -114,8 +118,29 @@ public class MultiFormatDataView : Control
         add { this.AddHandler(ClearRequestedEvent, value); }
         remove { this.RemoveHandler(ClearRequestedEvent, value); }
     }
+
+    private static RoutedCommand? copyCommand;
+    /// <summary>
+    /// .NET Property for <see cref="CopyCommandProperty"/>
+    /// </summary>
+    public static RoutedCommand? CopyCommand
+    {
+        get { return copyCommand; }
+    }
     #endregion
 
+    public MultiFormatDataView()
+    {
+        // register copy command
+        copyCommand = new RoutedCommand("CopyCommand", typeof(MultiFormatDataView));
+        var binding = new CommandBinding
+        {
+            Command = copyCommand
+        };
+        binding.Executed += CopyCommand_Executed; ;
+        CommandBindings.Add(binding);
+    }
+
     static MultiFormatDataView()
     {
         DefaultStyleKeyProperty.OverrideMetadata(typeof(MultiFormatDataView), new FrameworkPropertyMetadata(typeof(MultiFormatDataView)));
@@ -229,6 +254,24 @@ public class MultiFormatDataView : Control
         RaiseEvent(args);
     }
 
+    private void CopyCommand_Executed(object sender, ExecutedRoutedEventArgs e)
+    {
+        switch (e.Parameter.ToString())
+        {
+            case "Character":
+                Clipboard.SetText(this.DataSource.GetSelectedDataAsString(Core.Types.FormatType.Character));
+                break;
+            case "Hexadecimal":
+                Clipboard.SetText(this.DataSource.GetSelectedDataAsString(Core.Types.FormatType.Hexadecimal));
+                break;
+            case "Binary":
+                Clipboard.SetText(this.DataSource.GetSelectedDataAsString(Core.Types.FormatType.Binary));
+                break;
+            default:
+                throw new ArgumentException($"'{CopyCommand_Executed}()' does not have handling implemented for CommandParameter={e.Parameter}");
+        }
+    }
+
     #region Selected Items handling
     private void ItemsControl_SelectionChanged(object sender, SelectionChangedEventArgs e)
     {

MultiTerm.Wpf.CustomControl/MultiFormatDataView/MultiFormatDataView.xaml

@@ -22,6 +22,13 @@
             <!-- Value Converters -->
             <local:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter"/>
             
+            <!-- Context Menu Style -->
+            <ContextMenu x:Key="CopyDifferentFormatsContextMenu" Background="White" >
+                <MenuItem Header="Copy as Characters" Command="{x:Static local:MultiFormatDataView.CopyCommand}"  CommandParameter="Character"/>
+                <MenuItem Header="Copy as Hexadecimal" Command="{x:Static local:MultiFormatDataView.CopyCommand}" CommandParameter="Hexadecimal"/>
+                <MenuItem Header="Copy as Binary" Command="{x:Static local:MultiFormatDataView.CopyCommand}" CommandParameter="Binary"/>
+            </ContextMenu>
+
             <!-- Data Template for Data Container -->
             <DataTemplate x:Key="dataContainerTemplate" DataType="vm:IDataViewModel">
                 <StackPanel Orientation="Vertical" Margin="0" x:Name="ItemStackPanel">
@@ -170,7 +177,8 @@
                                 TextWrapping="Wrap"
                                 ScrollViewer.VerticalScrollBarVisibility="Auto"
                                 ScrollViewer.CanContentScroll="true"
-                                ScrollViewer.PanningMode="VerticalOnly">
+                                ScrollViewer.PanningMode="VerticalOnly"
+                                ContextMenu="{StaticResource CopyDifferentFormatsContextMenu}">
 
                                 <!-- Show only when other checkboxes than "Characters" is checked -->
                                 <TextBox.Style>
@@ -189,7 +197,6 @@
                                         </Style.Triggers>
                                     </Style>
                                 </TextBox.Style>
-
                             </TextBox>
 
                             <!-- MultiFormat Items Control -->
@@ -203,7 +210,8 @@
                                 VirtualizingPanel.CacheLengthUnit="Item"
                                 VirtualizingPanel.VirtualizationMode="Standard"
                                 ItemTemplate="{StaticResource dataContainerTemplate}"
-                                SelectionMode="Extended">
+                                SelectionMode="Extended"
+                                ContextMenu="{StaticResource CopyDifferentFormatsContextMenu}">
 
                                 <!-- Hide when only "Characters" checkbox is checked -->
                                 <ListView.Style>