Add filter drop down for project selection when filtering

src/ResXManager.VSIX.Compatibility.Shared/Refactorings.cs

@@ -127,12 +127,6 @@ public bool CanMoveToResource()
             .Where(entity => !entity.IsWinFormsDesignerResource)
             .ToList();
 
-        var filter = EntityFilter.BuildFilter(Settings.Default.ResourceFilter);
-        if (filter != null)
-        {
-            entities.RemoveAll(item => !filter(item.ToString()));
-        }
-
         var projectResources = new HashSet<ResourceEntity>(GetResourceEntriesFromProject(document, entities));
 
         // put resources from the same project on top

src/ResXManager.View/Behaviors/EntityFilter.cs

@@ -8,6 +8,7 @@
 using Microsoft.Xaml.Behaviors;
 
 using ResXManager.Infrastructure;
+using ResXManager.Model;
 
 using Throttle;
 
@@ -40,7 +41,7 @@ private void FilterText_Changed()
         listBox.Items.Filter = BuildFilter(value);
     }
 
-    public static Predicate<object>? BuildFilter(string? value)
+    private static Predicate<object>? BuildFilter(string? value)
     {
         value = value?.Trim();
 
@@ -50,7 +51,7 @@ private void FilterText_Changed()
         try
         {
             var regex = new Regex(value, RegexOptions.IgnoreCase | RegexOptions.Singleline);
-            return item => regex.IsMatch(item?.ToString() ?? string.Empty);
+            return item => Filter(item, regex);
         }
         catch (ArgumentException)
         {
@@ -59,7 +60,7 @@ private void FilterText_Changed()
         try
         {
             var regex = new Regex(value.Replace(@"\", @"\\", StringComparison.Ordinal), RegexOptions.IgnoreCase | RegexOptions.Singleline);
-            return item => regex.IsMatch(item?.ToString() ?? string.Empty);
+            return item => Filter(item, regex);
         }
         catch (ArgumentException)
         {
@@ -68,6 +69,11 @@ private void FilterText_Changed()
         return null;
     }
 
+    private static bool Filter(object item, Regex regex)
+    {
+        return item is ResourceEntity entity && (regex.IsMatch(entity.DisplayName) || regex.IsMatch(entity.ProjectName));
+    }
+
     protected override void OnAttached()
     {
         base.OnAttached();

src/ResXManager.View/Visuals/ProjectFilterItem.cs

@@ -0,0 +1,15 @@
+namespace ResXManager.View.Visuals;
+
+using System.Text.RegularExpressions;
+
+public class ProjectFilterItem(string displayName)
+{
+    public string DisplayName { get; } = displayName;
+
+    public string SearchText { get; } = $"^{Regex.Escape(displayName)}$";
+
+    public override string ToString()
+    {
+        return SearchText;
+    }
+}

src/ResXManager.View/Visuals/ResourceView.xaml

@@ -107,8 +107,19 @@
                     VerticalAlignment="Center" HorizontalAlignment="Right" Margin="2,0" />
             </StackPanel>
             <Decorator DockPanel.Dock="Top" Height="1" />
-            <TextBox x:Name="EntityFilter" Text="{Binding Path=ResourceFilter, Source={x:Static properties:Settings.Default}, Mode=TwoWay}"
-                     ToolTip="{x:Static properties:Resources.ResourceFilterToolTip}" BorderThickness="0" Style="{DynamicResource {x:Static styles:ResourceKeys.TextBoxStyle}}" />
+            <ComboBox x:Name="EntityFilter"
+                      IsEditable="True" 
+                      ItemsSource="{Binding ProjectNames}"
+                      Text="{Binding Path=ResourceFilter, Source={x:Static properties:Settings.Default}, Mode=TwoWay}"
+                      ToolTip="{x:Static properties:Resources.ResourceFilterToolTip}" 
+                      BorderThickness="0" 
+                      Style="{DynamicResource {x:Static styles:ResourceKeys.ComboBoxStyle}}">
+              <ComboBox.ItemTemplate>
+                <DataTemplate>
+                  <TextBlock Text="{Binding DisplayName}" VerticalAlignment="Center" />
+                </DataTemplate>
+              </ComboBox.ItemTemplate>
+            </ComboBox>
           </DockPanel>
         </Border>
       </DockPanel>

src/ResXManager.View/Visuals/ResourceViewModel.cs

@@ -25,6 +25,7 @@
 using ResXManager.View.Tools;
 
 using Throttle;
+
 using TomsToolbox.Essentials;
 using TomsToolbox.ObservableCollections;
 using TomsToolbox.Wpf;
@@ -55,15 +56,30 @@ public ResourceViewModel(ResourceManager resourceManager, IConfiguration configu
         _performanceTracer = performanceTracer;
 
         ResourceTableEntries = SelectedEntities.ObservableSelectMany(entity => entity.Entries);
-        ResourceTableEntries.CollectionChanged += (_, __) => ResourceTableEntries_CollectionChanged();
+        ResourceTableEntries.CollectionChanged += (_, _) => ResourceTableEntries_CollectionChanged();
+
+        ResourceManager.ResourceEntities.CollectionChanged += (_, _) => ResourceEntities_OnCollectionChanged();
 
         resourceManager.LanguageChanged += ResourceManager_LanguageChanged;
     }
 
+    [Throttled(typeof(DispatcherThrottle))]
+    private void ResourceEntities_OnCollectionChanged()
+    {
+        ProjectNames.Clear();
+        ProjectNames.AddRange(ResourceManager.ResourceEntities
+            .Select(entity => entity.ProjectName)
+            .Distinct()
+            .OrderBy(name => name)
+            .Select(name => new ProjectFilterItem(name)));
+    }
+
     internal event EventHandler<ResourceTableEntryEventArgs>? ClearFiltersRequest;
 
     public ResourceManager ResourceManager { get; }
 
+    public ObservableCollection<ProjectFilterItem> ProjectNames { get; } = [];
+
     public IObservableCollection<ResourceTableEntry> ResourceTableEntries { get; }
 
     public ObservableCollection<ResourceEntity> SelectedEntities { get; } = [];