Fix: Text parameter input cleared in the copy flyout

CHANGELOG.md

@@ -119,6 +119,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   (non-trashed) snips can't be deleted until those snips are removed. The CLI's
   icon asset and any leftover trashed snips are cleaned up with it.
 
+### Fixed
+- **Typing into a Text parameter in the copy flyout.** A Text parameter's box
+  cleared itself on every keystroke (and Copy never enabled), because the
+  hidden Choice dropdown in the same row stayed two-way bound to the value and
+  coerced it to null. Each parameter row now realises only the control its type
+  needs, so typed values stick, the preview resolves, and Copy enables.
+
 ## [0.1.0-alpha.1] - 2026-05-30
 
 First packaged release. Cuts an alpha to exercise the release pipeline

src/Snipdeck.App/Views/ParameterFillDialog.xaml

@@ -34,12 +34,20 @@
                     <StackPanel Spacing="4">
                         <TextBlock Text="{x:Bind Name}"
                                    Style="{ThemeResource CaptionTextBlockStyle}" />
-                        <TextBox Text="{x:Bind Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
-                                 Visibility="{x:Bind IsText, Converter={StaticResource BoolToVisibility}}" />
-                        <ComboBox ItemsSource="{x:Bind Options}"
+                        <!-- A parameter is either Text or Choice, fixed for the life of the row.
+                             Realise only the relevant control via x:Load: a collapsed-but-loaded
+                             ComboBox stays TwoWay-bound to the same Value and coerces it to null
+                             (its Options never contain a typed value), which clears the TextBox and
+                             leaves the command unresolved. x:Load keeps the unused control unrealised
+                             so its binding never fires. -->
+                        <TextBox x:Name="TextValueBox"
+                                 x:Load="{x:Bind IsText}"
+                                 Text="{x:Bind Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
+                        <ComboBox x:Name="ChoiceValueBox"
+                                  x:Load="{x:Bind IsChoice}"
+                                  ItemsSource="{x:Bind Options}"
                                   SelectedItem="{x:Bind Value, Mode=TwoWay}"
-                                  HorizontalAlignment="Stretch"
-                                  Visibility="{x:Bind IsChoice, Converter={StaticResource BoolToVisibility}}" />
+                                  HorizontalAlignment="Stretch" />
                     </StackPanel>
                 </DataTemplate>
             </ItemsControl.ItemTemplate>

tests/Snipdeck.Core.Tests/ViewModels/ParameterFillViewModelTests.cs

@@ -81,6 +81,28 @@ public void Editing_an_input_refreshes_the_preview_live()
             Assert.True(vm.IsCopyEnabled);
         }
 
+        [Fact]
+        public void A_windows_path_value_with_quotes_and_spaces_resolves_and_enables_copy()
+        {
+            // Guards the VM/engine side of the copy-flyout text-input fix: a value containing
+            // quotes, backslashes, spaces and a hyphen must substitute literally, resolve the
+            // command and enable copy. (The bug it accompanies was a XAML dual-binding that
+            // reset the value; the engine itself handles such values fine.)
+            var snip = new Snip
+            {
+                CommandTemplate = "snipdeck-importer snipcommand {path} --write",
+                Parameters = [new Parameter { Name = "path", Type = ParameterType.Text }],
+            };
+            var vm = new ParameterFillViewModel(snip, snip.Parameters);
+            Assert.False(vm.IsCopyEnabled);
+
+            const string value = "\"C:\\Users\\stuar\\OneDrive - SoftwareOne\\Files\\Storage\\SnipCommand\\snipcommand.db\"";
+            vm.Inputs[0].Value = value;
+
+            Assert.True(vm.IsCopyEnabled);
+            Assert.Equal($"snipdeck-importer snipcommand {value} --write", vm.Preview);
+        }
+
         [Fact]
         public void Multiple_inputs_resolve_independently()
         {