Improve SearchSyntaxDialog

- Double-clicking a tag will paste the tage into the search bar
- SearchSyntaxDialog now modeless

Source/LibationAvalonia/Dialogs/SearchSyntaxDialog.axaml

@@ -50,25 +50,25 @@
 		<Grid Grid.Row="1" RowDefinitions="Auto,Auto,*">
 			<TextBlock Text="STRING FIELDS" />
 			<TextBlock Grid.Row="1" Text="{CompiledBinding StringUsage}" />
-			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding StringFields}"/>
+			<ListBox Grid.Row="2" DoubleTapped="ListBox_DoubleTapped" ItemsSource="{CompiledBinding StringFields}"/>
 		</Grid>
 
 		<Grid Grid.Row="1" Grid.Column="1" RowDefinitions="Auto,Auto,*">
 			<TextBlock Text="NUMBER FIELDS" />
 			<TextBlock Grid.Row="1" Text="{CompiledBinding NumberUsage}" />
-			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding NumberFields}"/>
+			<ListBox Grid.Row="2" DoubleTapped="ListBox_DoubleTapped" ItemsSource="{CompiledBinding NumberFields}"/>
 		</Grid>
 
 		<Grid Grid.Row="1" Grid.Column="2" RowDefinitions="Auto,Auto,*">
 			<TextBlock Text="BOOLEAN (TRUE/FALSE) FIELDS" />
 			<TextBlock Grid.Row="1" Text="{CompiledBinding BoolUsage}" />
-			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding BoolFields}"/>
+			<ListBox Grid.Row="2" DoubleTapped="ListBox_DoubleTapped" ItemsSource="{CompiledBinding BoolFields}"/>
 		</Grid>
 
 		<Grid Grid.Row="1" Grid.Column="3" RowDefinitions="Auto,Auto,*">
 			<TextBlock Text="ID FIELDS" />
 			<TextBlock Grid.Row="1" Text="{CompiledBinding IdUsage}" />
-			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding IdFields}"/>
+			<ListBox Grid.Row="2" DoubleTapped="ListBox_DoubleTapped" ItemsSource="{CompiledBinding IdFields}"/>
 		</Grid>		
 	</Grid>
 </Window>

Source/LibationAvalonia/Dialogs/SearchSyntaxDialog.axaml.cs

@@ -1,10 +1,14 @@
+using Avalonia;
 using LibationSearchEngine;
+using System;
 using System.Linq;
 
+#nullable enable
 namespace LibationAvalonia.Dialogs
 {
 	public partial class SearchSyntaxDialog : DialogWindow
 	{
+		public event EventHandler<string>? TagDoubleClicked;
 		public string StringUsage { get; }
 		public string NumberUsage { get; }
 		public string BoolUsage { get; }
@@ -51,5 +55,13 @@ namespace LibationAvalonia.Dialogs
 
 			DataContext = this;
 		}
+
+		private void ListBox_DoubleTapped(object? sender, Avalonia.Input.TappedEventArgs e)
+		{
+			if (e.Source is StyledElement { DataContext: string tag })
+			{
+				TagDoubleClicked?.Invoke(this, tag);
+			}
+		}
 	}
 }

Source/LibationAvalonia/ViewModels/MainVM.Filters.cs

@@ -55,7 +55,7 @@ namespace LibationAvalonia.ViewModels
 
 		public void AddQuickFilterBtn() { if (SelectedNamedFilter != null) QuickFilters.Add(SelectedNamedFilter); }
 		public async Task FilterBtn(string filterString) => await PerformFilter(new(filterString, null));
-		public async Task FilterHelpBtn() => await new LibationAvalonia.Dialogs.SearchSyntaxDialog().ShowDialog(MainWindow);
+		public void FilterHelpBtn() => MainWindow.ShowSearchSyntaxDialog();
 		public void ToggleFirstFilterIsDefault() => FirstFilterIsDefault = !FirstFilterIsDefault;
 		public async Task EditQuickFiltersAsync() => await new LibationAvalonia.Dialogs.EditQuickFilters().ShowDialog(MainWindow);
 		public async Task PerformFilter(QuickFilters.NamedFilter? namedFilter)

Source/LibationAvalonia/Views/MainWindow.axaml.cs

@@ -223,5 +223,28 @@ namespace LibationAvalonia.Views
 		}
 
 		private void setProgressVisible(bool visible) => ViewModel.DownloadProgress = visible ? 0 : null;
+
+		public SearchSyntaxDialog ShowSearchSyntaxDialog()
+		{
+			var dialog = new SearchSyntaxDialog();
+			dialog.TagDoubleClicked += Dialog_TagDoubleClicked;
+			dialog.Closed += Dialog_Closed;
+			filterHelpBtn.IsEnabled = false;
+			dialog.Show(this);
+			return dialog;
+
+			void Dialog_Closed(object sender, EventArgs e)
+			{
+				dialog.TagDoubleClicked -= Dialog_TagDoubleClicked;
+				filterHelpBtn.IsEnabled = true;
+			}
+			void Dialog_TagDoubleClicked(object sender, string tag)
+			{
+				var text = filterSearchTb.Text;
+				filterSearchTb.Text = text.Insert(Math.Min(Math.Max(0, filterSearchTb.CaretIndex), text.Length), tag);
+				filterSearchTb.CaretIndex += tag.Length;
+				filterSearchTb.Focus();
+			}
+		}
 	}
 }

Source/LibationAvalonia/Walkthrough.cs

@@ -203,9 +203,10 @@ namespace LibationAvalonia
 			
 			await displayControlAsync(MainForm.filterHelpBtn);
 
-			var filterHelp = new SearchSyntaxDialog();
-			await filterHelp.ShowDialog(MainForm);
-
+			var searchDialog = MainForm.ShowSearchSyntaxDialog();
+			var tcs = new TaskCompletionSource();
+			searchDialog.Closed += (_, _) => tcs.SetResult();
+			await tcs.Task;
 			return true;
 		}