From 0e36dd9fc36ca1f08be254993e194be7f7347c1d Mon Sep 17 00:00:00 2001
From: rvost <romanvost@gmail.com>
Date: Sun, 9 Oct 2022 15:33:54 +0300
Subject: [PATCH] Add Ribbon tab for Trader Config

---
 .../ViewModels/TraderCategoryViewModel.cs     | 33 +++++---
 .../ViewModels/TraderConfigViewModel.cs       |  5 +-
 .../ViewModels/TraderViewModel.cs             | 27 ++++--
 .../ViewModels/WorkspaceViewModel.cs          |  4 +-
 .../Controls/TraderCategoryControl.xaml       | 17 ++--
 .../Resources/IconsDictionary.xaml            | 82 +++++++++++++++++++
 .../Views/MainWindow.xaml                     | 44 +++++++++-
 .../Views/TraderConfigView.xaml               |  7 +-
 8 files changed, 184 insertions(+), 35 deletions(-)

diff --git a/src/DayzServerTools.Application/ViewModels/TraderCategoryViewModel.cs b/src/DayzServerTools.Application/ViewModels/TraderCategoryViewModel.cs
index 622d548..f22e02b 100644
--- a/src/DayzServerTools.Application/ViewModels/TraderCategoryViewModel.cs
+++ b/src/DayzServerTools.Application/ViewModels/TraderCategoryViewModel.cs
@@ -1,4 +1,5 @@
-using System.Collections.ObjectModel;
+using System.Collections;
+using System.Collections.ObjectModel;
 
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.DependencyInjection;
@@ -16,6 +17,9 @@ public partial class TraderCategoryViewModel : ObservableObject
     private readonly IDialogFactory _dialogFactory;
     [ObservableProperty]
     private TraderCategory model;
+    [ObservableProperty]
+    [NotifyCanExecuteChangedFor(nameof(CopyItemsCommand), nameof(MoveItemsCommand))]
+    private IList selectedItems;
 
     public string Name
     {
@@ -24,33 +28,40 @@ public string Name
     }
     public ObservableCollection<TraderItem> Items => model.TraderItems;
 
-    public IRelayCommand<object> CopyItemsCommand { get; }
-    public IRelayCommand<object> MoveItemsCommand { get; }
+    public IRelayCommand CopyItemsCommand { get; }
+    public IRelayCommand MoveItemsCommand { get; }
 
     public TraderCategoryViewModel(TraderCategory model)
     {
         _dialogFactory = Ioc.Default.GetService<IDialogFactory>();
         this.model = model;
 
-        CopyItemsCommand = new RelayCommand<object>(CopyItems);
-        MoveItemsCommand = new RelayCommand<object>(MoveItems);
+        CopyItemsCommand = new RelayCommand(CopyItems, () => CanExecuteBatchCommand());
+        MoveItemsCommand = new RelayCommand(MoveItems, () => CanExecuteBatchCommand());
     }
 
     public TraderCategoryViewModel() : this(new TraderCategory()) { }
 
-    private void CopyItems(object cmdParam)
+    protected bool CanExecuteBatchCommand() => SelectedItems is not null;
+    protected void CopyItems()
     {
-        var list = (System.Collections.IList)cmdParam;
-        var items = list.Cast<TraderItem>();
+        if (SelectedItems is null)
+        {
+            return;
+        }
+        var items = SelectedItems.Cast<TraderItem>();
 
         var dialog = _dialogFactory.CreateExportDialog();
         dialog.Store = new TraderItemsExportStore(items, true);
         dialog.ShowDialog();
     }
-    private void MoveItems(object cmdParam)
+    protected void MoveItems()
     {
-        var list = (System.Collections.IList)cmdParam;
-        var items = new List<TraderItem>(list.Cast<TraderItem>());
+        if (SelectedItems is null)
+        {
+            return;
+        }
+        var items = SelectedItems.Cast<TraderItem>();
 
         var dialog = _dialogFactory.CreateExportDialog();
         dialog.Store = new TraderItemsExportStore(items, true);
diff --git a/src/DayzServerTools.Application/ViewModels/TraderConfigViewModel.cs b/src/DayzServerTools.Application/ViewModels/TraderConfigViewModel.cs
index db5f7b7..f25590b 100644
--- a/src/DayzServerTools.Application/ViewModels/TraderConfigViewModel.cs
+++ b/src/DayzServerTools.Application/ViewModels/TraderConfigViewModel.cs
@@ -1,7 +1,7 @@
 using System.Collections.ObjectModel;
 using System.Collections.Specialized;
+
 using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
 
 using DayzServerTools.Application.ViewModels.Base;
 using DayzServerTools.Application.Models;
@@ -13,6 +13,9 @@ namespace DayzServerTools.Application.ViewModels
 {
     public partial class TraderConfigViewModel : ProjectFileViewModel<TraderConfig>, IDisposable
     {
+        [ObservableProperty]
+        private TraderViewModel selectedTrader;
+
         public ObservableCollection<TraderViewModel> Traders { get; } = new();
         public CurrencyCategory CurrencyCategory
         {
diff --git a/src/DayzServerTools.Application/ViewModels/TraderViewModel.cs b/src/DayzServerTools.Application/ViewModels/TraderViewModel.cs
index 0cabf79..67a7e85 100644
--- a/src/DayzServerTools.Application/ViewModels/TraderViewModel.cs
+++ b/src/DayzServerTools.Application/ViewModels/TraderViewModel.cs
@@ -13,6 +13,9 @@ public partial class TraderViewModel : ObservableObject, IDisposable
     [ObservableProperty]
     [NotifyPropertyChangedFor(nameof(Name), nameof(Categories))]
     private Trader model = new();
+    [ObservableProperty]
+    [NotifyCanExecuteChangedFor(nameof(RemoveCategoryCommand))]
+    private TraderCategoryViewModel selectedCategory;
 
     public string Name
     {
@@ -32,10 +35,26 @@ public TraderViewModel(Trader trader)
             );
 
         AddCategoryCommand = new RelayCommand<string>(AddCategory);
-        RemoveCategoryCommand = new RelayCommand<TraderCategoryViewModel>(RemoveCategory);
+        RemoveCategoryCommand = new RelayCommand<TraderCategoryViewModel>(RemoveCategory, CanRemoveCategory);
 
         Categories.CollectionChanged += CategoriesCollectionChanged;
     }
+    protected void AddCategory(string categoryName)
+           => Categories.Add(new(new TraderCategory() { CategoryName = categoryName }));
+    protected bool CanRemoveCategory(TraderCategoryViewModel category)
+        => category is not null || SelectedCategory is not null;
+    protected void RemoveCategory(TraderCategoryViewModel category)
+    {
+        if (category is not null)
+        {
+            Categories.Remove(category);
+        }
+        else if (SelectedCategory is not null)
+        {
+            Categories.Remove(SelectedCategory);
+            SelectedCategory = null;
+        }
+    }
 
     private void CategoriesCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
     {
@@ -58,12 +77,6 @@ private void CategoriesCollectionChanged(object sender, NotifyCollectionChangedE
         }
     }
 
-    public void AddCategory(string categoryName)
-        => Categories.Add(new(new TraderCategory() { CategoryName = categoryName }));
-
-    public void RemoveCategory(TraderCategoryViewModel category)
-        => Categories.Remove(category);
-
     public void Dispose()
     {
         Categories.CollectionChanged -= CategoriesCollectionChanged;
diff --git a/src/DayzServerTools.Application/ViewModels/WorkspaceViewModel.cs b/src/DayzServerTools.Application/ViewModels/WorkspaceViewModel.cs
index 1d8c11c..7831784 100644
--- a/src/DayzServerTools.Application/ViewModels/WorkspaceViewModel.cs
+++ b/src/DayzServerTools.Application/ViewModels/WorkspaceViewModel.cs
@@ -35,7 +35,8 @@ public partial class WorkspaceViewModel : TabbedViewModel
     [NotifyCanExecuteChangedFor(nameof(LoadUserDefinitionsCommand))]
     private UserDefinitions userDefinitions = null;
     [ObservableProperty]
-    [NotifyPropertyChangedFor(nameof(ActiveFileIsUserDefinitions), nameof(ActiveFileIsItemTypes))]
+    [NotifyPropertyChangedFor(nameof(ActiveFileIsUserDefinitions), nameof(ActiveFileIsItemTypes), 
+        nameof(ActiveFileIsTraderConfig))]
     private IProjectFileTab activeFile;
     private object activePane;
 
@@ -53,6 +54,7 @@ public object ActivePane
     }
     public bool ActiveFileIsUserDefinitions => ActiveFile is UserDefinitionsViewModel;
     public bool ActiveFileIsItemTypes => ActiveFile is ItemTypesViewModel;
+    public bool ActiveFileIsTraderConfig => ActiveFile is TraderConfigViewModel;
     public ErrorsPaneViewModel ErrorsPaneViewModel => _errorsPaneViewModel;
     [ObservableProperty]
     private ObservableCollection<UserDefinableFlag> usages = new();
diff --git a/src/DayzServerTools.Windows/Controls/TraderCategoryControl.xaml b/src/DayzServerTools.Windows/Controls/TraderCategoryControl.xaml
index 049a607..c0e6a8f 100644
--- a/src/DayzServerTools.Windows/Controls/TraderCategoryControl.xaml
+++ b/src/DayzServerTools.Windows/Controls/TraderCategoryControl.xaml
@@ -13,7 +13,7 @@
                       CommandParameter="{Binding}"/>
         </ContextMenu>
     </UserControl.ContextMenu>
-    <Expander>
+    <Expander  IsExpanded="{Binding Mode=OneWayToSource, Path=IsSelected, RelativeSource={RelativeSource AncestorType=ListViewItem, Mode=FindAncestor}}">
         <Expander.Header>
             <TextBox Text="{Binding Name}" d:Text="Category Name"
                      FontSize="18" FontWeight="SemiBold"
@@ -22,21 +22,16 @@
                      BorderThickness="0 0 0 2"
                      Background="Transparent"/>
         </Expander.Header>
-        <DataGrid ItemsSource="{Binding Path=Items}" AutoGenerateColumns="False">
+        <local:BindableMultiSelectDataGrid ItemsSource="{Binding Path=Items}" AutoGenerateColumns="False"
+                                           SelectedItems="{Binding SelectedItems, Mode=OneWayToSource}">
             <DataGrid.ContextMenu>
                 <ContextMenu>
                     <MenuItem Header="Copy items to..."
                               Icon="{StaticResource CopyIcon}"
-                              Command="{Binding CopyItemsCommand}"
-                              CommandParameter="{Binding PlacementTarget.SelectedItems,
-                                                         RelativeSource={RelativeSource FindAncestor,
-                                                         AncestorType={x:Type ContextMenu}}}"/>
+                              Command="{Binding CopyItemsCommand}"/>
                     <MenuItem Header="Move items..."
                               Icon="{StaticResource ExportIcon}"
-                              Command="{Binding MoveItemsCommand}"
-                              CommandParameter="{Binding PlacementTarget.SelectedItems,
-                                                         RelativeSource={RelativeSource FindAncestor,
-                                                         AncestorType={x:Type ContextMenu}}}"/>
+                              Command="{Binding MoveItemsCommand}"/>
                 </ContextMenu>
             </DataGrid.ContextMenu>
             <DataGrid.Columns>
@@ -69,6 +64,6 @@
                     </DataGridTextColumn.HeaderStyle>
                 </DataGridTextColumn>
             </DataGrid.Columns>
-        </DataGrid>
+        </local:BindableMultiSelectDataGrid>
     </Expander>
 </UserControl>
diff --git a/src/DayzServerTools.Windows/Resources/IconsDictionary.xaml b/src/DayzServerTools.Windows/Resources/IconsDictionary.xaml
index 081f04c..d9e9ef8 100644
--- a/src/DayzServerTools.Windows/Resources/IconsDictionary.xaml
+++ b/src/DayzServerTools.Windows/Resources/IconsDictionary.xaml
@@ -124,6 +124,38 @@
         </Rectangle>
     </Viewbox>
 
+    <Viewbox x:Key="CopyVecIcon" x:Shared="false"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib">
+        <Rectangle Width="16 " Height="16">
+            <Rectangle.Resources>
+                <SolidColorBrush x:Key="canvas" Opacity="0" />
+                <SolidColorBrush x:Key="light-defaultgrey-10" Color="#212121" Opacity="0.1" />
+                <SolidColorBrush x:Key="light-defaultgrey" Color="#212121" Opacity="1" />
+                <System:Double x:Key="cls-1">0.75</System:Double>
+            </Rectangle.Resources>
+            <Rectangle.Fill>
+                <DrawingBrush Stretch="None">
+                    <DrawingBrush.Drawing>
+                        <DrawingGroup>
+                            <DrawingGroup x:Name="canvas">
+                                <GeometryDrawing Brush="{DynamicResource canvas}" Geometry="F1M16,16H0V0H16Z" />
+                            </DrawingGroup>
+                            <DrawingGroup x:Name="level_1">
+                                <DrawingGroup Opacity="{DynamicResource cls-1}">
+                                    <GeometryDrawing Brush="{DynamicResource light-defaultgrey-10}" Geometry="F1M14.5,1.5v10H10v-7L9.5,4h-3V1.5Z" />
+                                    <GeometryDrawing Brush="{DynamicResource light-defaultgrey}" Geometry="F1M6.5,1h8l.5.5v10l-.5.5H10V11h4V2H7V4H6V1.5Z" />
+                                </DrawingGroup>
+                                <GeometryDrawing Brush="{DynamicResource light-defaultgrey-10}" Geometry="F1M9.5,4.5v10h-8V4.5Z" />
+                                <GeometryDrawing Brush="{DynamicResource light-defaultgrey}" Geometry="F1M1,4.5v10l.5.5h8l.5-.5V4.5L9.5,4h-8ZM2,5H9v9H2Z" />
+                            </DrawingGroup>
+                        </DrawingGroup>
+                    </DrawingBrush.Drawing>
+                </DrawingBrush>
+            </Rectangle.Fill>
+        </Rectangle>
+    </Viewbox>
+
     <Viewbox x:Key="OpenVecIcon" x:Shared="false"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib">
@@ -244,6 +276,31 @@
         </Rectangle>
     </Viewbox>
 
+    <Viewbox x:Key="ExportVecIcon"  x:Shared="false" 
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib">
+        <Rectangle Width="16 " Height="16">
+            <Rectangle.Resources>
+                <SolidColorBrush x:Key="canvas" Opacity="0" />
+                <SolidColorBrush x:Key="light-defaultgrey" Color="#212121" Opacity="1" />
+            </Rectangle.Resources>
+            <Rectangle.Fill>
+                <DrawingBrush Stretch="None">
+                    <DrawingBrush.Drawing>
+                        <DrawingGroup>
+                            <DrawingGroup x:Name="canvas">
+                                <GeometryDrawing Brush="{DynamicResource canvas}" Geometry="F1M16,16H0V0H16Z" />
+                            </DrawingGroup>
+                            <DrawingGroup x:Name="level_1">
+                                <GeometryDrawing Brush="{DynamicResource light-defaultgrey}" Geometry="F1M4.646,1.646l.708.708L2.707,5H9.5a4.5,4.5,0,0,1,0,9V13a3.5,3.5,0,0,0,0-7H2.707L5.354,8.646l-.708.708-3.5-3.5V5.146Z" />
+                            </DrawingGroup>
+                        </DrawingGroup>
+                    </DrawingBrush.Drawing>
+                </DrawingBrush>
+            </Rectangle.Fill>
+        </Rectangle>
+    </Viewbox>
+
     <Viewbox x:Key="ExportTraderVecIcon" x:Shared="false"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib">
@@ -424,6 +481,31 @@
         </Rectangle>
     </Viewbox>
 
+    <Viewbox x:Key="RemoveVecIcon" x:Shared="false"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib">
+        <Rectangle Width="16 " Height="16">
+            <Rectangle.Resources>
+                <SolidColorBrush x:Key="canvas" Opacity="0" />
+                <SolidColorBrush x:Key="light-red" Color="#c50b17" Opacity="1" />
+            </Rectangle.Resources>
+            <Rectangle.Fill>
+                <DrawingBrush Stretch="None">
+                    <DrawingBrush.Drawing>
+                        <DrawingGroup>
+                            <DrawingGroup x:Name="canvas">
+                                <GeometryDrawing Brush="{DynamicResource canvas}" Geometry="F1M16,16H0V0H16Z" />
+                            </DrawingGroup>
+                            <DrawingGroup x:Name="level_1">
+                                <GeometryDrawing Brush="{DynamicResource light-red}" Geometry="F1M14,9H2V7H14Z" />
+                            </DrawingGroup>
+                        </DrawingGroup>
+                    </DrawingBrush.Drawing>
+                </DrawingBrush>
+            </Rectangle.Fill>
+        </Rectangle>
+    </Viewbox>
+
     <Viewbox x:Key="ValidateVecIcon" x:Shared="false"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib">
diff --git a/src/DayzServerTools.Windows/Views/MainWindow.xaml b/src/DayzServerTools.Windows/Views/MainWindow.xaml
index 5b440e2..2b03185 100644
--- a/src/DayzServerTools.Windows/Views/MainWindow.xaml
+++ b/src/DayzServerTools.Windows/Views/MainWindow.xaml
@@ -14,6 +14,15 @@
                      WindowState="Maximized"
                      d:Height="800" d:Width="1200">
     <Window.Resources>
+        <Style TargetType="fluent:Button">
+            <Setter Property="IsEnabled" Value="True"/>
+            <Style.Triggers>
+                <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Command}"
+                             Value="{x:Null}">
+                    <Setter Property="IsEnabled" Value="False"/>
+                </DataTrigger>
+            </Style.Triggers>
+        </Style>
         <Style x:Key="ScaleButton" TargetType="Button">
             <Setter Property="Height" Value="32"/>
             <Setter Property="Width" Value="32"/>
@@ -119,6 +128,11 @@
                                                  BorderBrush="Orange"
                                                  x:Name="ItemTypesToolsGroup"
                                                  Visibility="{Binding ActiveFileIsItemTypes, Converter={StaticResource AvalonBoolToVisibilityConverter}, Mode=OneWay}" />
+                <fluent:RibbonContextualTabGroup Header="Trader"
+                                                 Background="Gold"
+                                                 BorderBrush="Gold"
+                                                 x:Name="TraderConfigToolsGroup"
+                                                 Visibility="{Binding ActiveFileIsTraderConfig, Converter={StaticResource AvalonBoolToVisibilityConverter}, Mode=OneWay}" />
             </fluent:Ribbon.ContextualGroups>
             <fluent:RibbonTabItem Header="Workspace">
                 <fluent:RibbonGroupBox Header="Limits Definitions" MinWidth="100"
@@ -204,6 +218,7 @@
                 </fluent:RibbonGroupBox>
             </fluent:RibbonTabItem>
             <!-- Item Types Tools Group -->
+            <!-- Item Types General -->
             <fluent:RibbonTabItem Header="General" Group="{Binding ElementName=ItemTypesToolsGroup}"
                                   Visibility="{Binding ActiveFileIsItemTypes, Converter={StaticResource AvalonBoolToVisibilityConverter}, Mode=OneWay}">
                 <fluent:RibbonGroupBox Header="Edit">
@@ -224,8 +239,8 @@
                                    Command="{Binding ActiveFile.ValidateCommand}"/>
                 </fluent:RibbonGroupBox>
             </fluent:RibbonTabItem>
-            
-<fluent:RibbonTabItem Header="Batch Edit" Group="{Binding ElementName=ItemTypesToolsGroup}"
+            <!-- Item Types Batch Edit -->
+            <fluent:RibbonTabItem Header="Batch Edit" Group="{Binding ElementName=ItemTypesToolsGroup}"
                                   Visibility="{Binding ActiveFileIsItemTypes, Converter={StaticResource AvalonBoolToVisibilityConverter}, Mode=OneWay}">
                 <fluent:RibbonGroupBox Header="Quantity">
                     <Button Content="×½" Style="{StaticResource ScaleButton}"
@@ -324,6 +339,31 @@
                                    CommandParameter="{Binding ElementName=newTagComboBox, Path=SelectedItem}"/>
                 </fluent:RibbonGroupBox>
             </fluent:RibbonTabItem>
+            <!-- Trader Tools Tools Group -->
+            <fluent:RibbonTabItem Header="Trader Tools" Group="{Binding ElementName=TraderConfigToolsGroup}"
+                                  Visibility="{Binding ActiveFileIsTraderConfig, Converter={StaticResource AvalonBoolToVisibilityConverter}, Mode=OneWay}">
+                <fluent:RibbonGroupBox Header="Category">
+                    <RibbonTextBox x:Name="newTraderCategoryTextBox" Label="New:"
+                                   Background="LightGray"
+                                   Padding="2" Margin="4"
+                                   Command="{Binding ActiveFile.SelectedTrader.AddCategoryCommand}"
+                                   CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=Text}"/>
+                    <fluent:Button Header="Add" Icon="{StaticResource AddVecIcon}"
+                                   Command="{Binding ActiveFile.SelectedTrader.AddCategoryCommand}"
+                                   CommandParameter="{Binding ElementName=newTraderCategoryTextBox, Path=Text}"/>
+                    <fluent:Button Header="Remove" Icon="{StaticResource RemoveVecIcon}"
+                                   Command="{Binding ActiveFile.SelectedTrader.RemoveCategoryCommand}"
+                                   CommandParameter="{x:Null}"/>
+                </fluent:RibbonGroupBox>
+                <fluent:RibbonGroupBox Header="Items">
+                    <fluent:Button Header="Copy to..."
+                                   Icon="{StaticResource CopyVecIcon}"
+                                   Command="{Binding ActiveFile.SelectedTrader.SelectedCategory.CopyItemsCommand}"/>
+                    <fluent:Button Header="Move..."
+                                   Icon="{StaticResource ExportVecIcon}"
+                                   Command="{Binding ActiveFile.SelectedTrader.SelectedCategory.MoveItemsCommand}"/>
+                </fluent:RibbonGroupBox>
+            </fluent:RibbonTabItem>
         </fluent:Ribbon>
         <xcad:DockingManager AllowMixedOrientation="True"
                              DocumentsSource="{Binding Tabs}"
diff --git a/src/DayzServerTools.Windows/Views/TraderConfigView.xaml b/src/DayzServerTools.Windows/Views/TraderConfigView.xaml
index da5f759..91ccce8 100644
--- a/src/DayzServerTools.Windows/Views/TraderConfigView.xaml
+++ b/src/DayzServerTools.Windows/Views/TraderConfigView.xaml
@@ -19,7 +19,8 @@
         </Grid.RowDefinitions>
         <TextBlock FontSize="20" FontWeight="SemiBold" Margin="0 5">Trader Config</TextBlock>
         <TabControl Grid.Row="1" ItemsSource="{Binding Traders}" TabStripPlacement="Left"
-                    SelectedIndex="0" IsSynchronizedWithCurrentItem="True">
+                    SelectedIndex="0" IsSynchronizedWithCurrentItem="True"
+                    SelectedItem="{Binding SelectedTrader}">
             <TabControl.ItemContainerStyle>
                 <Style TargetType="TabItem">
                     <Setter Property="FontSize" Value="16"/>
@@ -45,7 +46,9 @@
                             <RowDefinition Height="*"/>
                             <RowDefinition Height="auto"/>
                         </Grid.RowDefinitions>
-                        <ListView Grid.Row="0" ItemsSource="{Binding Categories}" 
+                        <ListView Grid.Row="0" ItemsSource="{Binding Categories}"
+                                  SelectedItem="{Binding SelectedCategory}"
+                                  SelectionMode="Single"
                                   ScrollViewer.CanContentScroll="True" 
                                   ScrollViewer.VerticalScrollBarVisibility="Auto"
                                   VirtualizingPanel.ScrollUnit="Pixel">