Added ability to Invoke on controls that support the invoke pattern via the UI

Author: JeremyFarmerDHG

src/FlaUInspect/Core/PatternItemsFactory.cs

@@ -42,7 +42,8 @@ public class PatternItemsFactory(AutomationBase? automationBase) {
         new (TextPattern.Pattern, AddTextPatternDetails),
         new (TogglePattern.Pattern, AddTogglePatternDetails),
         new (ValuePattern.Pattern, AddValuePatternDetails),
-        new (WindowPattern.Pattern, AddWindowPatternDetails)
+        new (WindowPattern.Pattern, AddWindowPatternDetails),
+        new (InvokePattern.Pattern, AddInvokePatternDetails)
     ];
 
     private readonly KeyValuePair<PatternId, Func<AutomationElement, IEnumerable<PatternItem>>>[] _patternsUia3Func =
@@ -59,7 +60,8 @@ public class PatternItemsFactory(AutomationBase? automationBase) {
         new (FlaUI.UIA3.Patterns.TextPattern.Pattern, AddTextPatternDetails),
         new (FlaUI.UIA3.Patterns.TogglePattern.Pattern, AddTogglePatternDetails),
         new (FlaUI.UIA3.Patterns.ValuePattern.Pattern, AddValuePatternDetails),
-        new (FlaUI.UIA3.Patterns.WindowPattern.Pattern, AddWindowPatternDetails)
+        new (FlaUI.UIA3.Patterns.WindowPattern.Pattern, AddWindowPatternDetails),
+        new (FlaUI.UIA3.Patterns.InvokePattern.Pattern, AddInvokePatternDetails)
     ];
 
     public IDictionary<string, PatternItem[]> CreatePatternItemsForElement(AutomationElement element, HashSet<PatternId> allSupportedPatterns) {
@@ -286,6 +288,15 @@ private static IEnumerable<PatternItem> AddGridItemPatternDetails(AutomationElem
         yield return new PatternItem("ContainingGrid", pattern.ContainingGrid.ToString());
     }
 
+    private static IEnumerable<PatternItem> AddInvokePatternDetails(AutomationElement? element) {
+        if (element == null) {
+            yield break;
+        }
+
+        IInvokePattern pattern = element.Patterns.Invoke.Pattern;
+        yield return new PatternItem("Invoke", "Invoke", pattern.Invoke);
+    }
+
     private static string GetTextAttribute<T>(AutomationElement element, ITextPattern pattern,
         TextAttributeId textAttribute, object mixedValue, Func<T, string> func) {
         object value = pattern.DocumentRange.GetAttributeValue(textAttribute);

src/FlaUInspect/ViewModels/PatternItem.cs

@@ -4,7 +4,7 @@
 
 namespace FlaUInspect.ViewModels;
 
-public class PatternItem(string key, string? value) : ObservableObject {
+public class PatternItem(string key, string? value, Action? action = null) : ObservableObject {
     private string _key = key;
     private string? _value = value;
 
@@ -16,6 +16,10 @@ public string? Value {
         get => _value;
         set => SetProperty(ref _value, value);
     }
+    public bool HasExecutableAction {
+        get => Action != null;
+    }
+    public Action? Action { get; } = action;
 
     public static PatternItem FromAutomationProperty<T>(string key, IAutomationProperty<T> value) {
         return new PatternItem(key, value!.ToDisplayText());

src/FlaUInspect/Views/MainWindow.xaml

@@ -322,8 +322,7 @@
                                                           ItemsSource="{Binding Children}">
                                                 <ItemsControl.ItemTemplate>
                                                     <DataTemplate>
-                                                        <Border Margin="0"
-                                                                Padding="0">
+                                                        <Border Margin="0" Padding="0">
                                                             <Border.Background>
                                                                 <MultiBinding Converter="{StaticResource AlternationToColorConverter}">
                                                                     <Binding Path="(ItemsControl.AlternationIndex)"
@@ -371,6 +370,18 @@
                                                                         </Style>
                                                                     </TextBox.Style>
                                                                 </TextBox>
+                                                                <Button Grid.Column="1" Click="InvokePatternActionHandler" Content="{Binding Value}">
+                                                                    <Button.Style>
+                                                                        <Style TargetType="{x:Type Button}">
+                                                                            <Setter Property="Visibility" Value="Hidden"/>
+                                                                            <Style.Triggers>
+                                                                                <DataTrigger Binding="{Binding HasExecutableAction}" Value="True">
+                                                                                    <Setter Property="Visibility" Value="Visible"/>
+                                                                                </DataTrigger>
+                                                                            </Style.Triggers>
+                                                                        </Style>
+                                                                    </Button.Style>
+                                                                </Button>
                                                             </Grid>
                                                         </Border>
                                                     </DataTemplate>

src/FlaUInspect/Views/MainWindow.xaml.cs

@@ -26,4 +26,14 @@ private void TreeView_OnSelectedItemChanged(object sender, RoutedPropertyChanged
             }
         }
     }
+
+    private void InvokePatternActionHandler(object sender, RoutedEventArgs e) {
+        var vm = (PatternItem)((Button)sender).DataContext;
+        if (vm.Action != null) {
+            Task.Run(() =>
+            {
+                vm.Action();
+            });
+        }
+    }
 }