[Run] Highlight search text (#11635)

* Add bolded type

* Inline get set

* Fix

* Update expect.txt

IMulti

Co-authored-by: Niels Laute <niels9001@hotmail.com>
Co-authored-by: Clint Rutkas <clint@rutkas.com>

src/modules/launcher/PowerLauncher/Converters/HighlightTextConverter.cs

@@ -0,0 +1,64 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Media;
+
+namespace PowerLauncher.Converters
+{
+    public class HighlightTextConverter : IMultiValueConverter
+    {
+        public object Convert(object[] value, Type targetType, object parameter, CultureInfo cultureInfo)
+        {
+#pragma warning disable CA1062 // Validate arguments of public methods
+            var text = value[0] as string;
+#pragma warning restore CA1062 // Validate arguments of public methods
+            var highlightData = value[1] as List<int>;
+            var selected = value[2] as bool? == true;
+
+            if (highlightData == null || !highlightData.Any())
+            {
+                // No highlight data, just return the text
+                return new Run(text);
+            }
+
+            var textBlock = new Span();
+            for (var i = 0; i < text.Length; i++)
+            {
+                var currentCharacter = text.Substring(i, 1);
+                if (ShouldHighlight(highlightData, i))
+                {
+                    textBlock.Inlines.Add(new Run(currentCharacter)
+                    {
+                        FontWeight = FontWeights.SemiBold,
+                    });
+                }
+                else
+                {
+                    textBlock.Inlines.Add(new Run(currentCharacter));
+                }
+            }
+
+            return textBlock;
+        }
+
+        public object[] ConvertBack(object value, Type[] targetType, object parameter, CultureInfo culture)
+        {
+            return new[] { DependencyProperty.UnsetValue, DependencyProperty.UnsetValue };
+        }
+
+        private static bool ShouldHighlight(List<int> highlightData, int index)
+        {
+            return highlightData.Contains(index);
+        }
+    }
+}

src/modules/launcher/PowerLauncher/ResultList.xaml

@@ -6,13 +6,18 @@
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:Behaviors="http://schemas.microsoft.com/xaml/behaviors"
     xmlns:p="clr-namespace:PowerLauncher.Properties"
-    mc:Ignorable="d"
+             xmlns:helper="clr-namespace:PowerLauncher.Helper"
+             xmlns:converters="clr-namespace:PowerLauncher.Converters"
+             xmlns:viewmodel="clr-namespace:PowerLauncher.ViewModel"
+             mc:Ignorable="d"
     d:DesignHeight="300"
     d:DesignWidth="720">
 
     <UserControl.Resources>
-        <ResourceDictionary>
 
+        <ResourceDictionary>
+            <converters:HighlightTextConverter x:Key="highlightTextConverter" />
+            
             <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
             <Style x:Key="FocusVisual">
                 <Setter Property="Control.Template">
@@ -226,14 +231,21 @@
                                Margin="-6,-2,0,0"
                                HorizontalAlignment="Center"
                                Source="{Binding Image}" />
-                        <TextBlock
-                            AutomationProperties.Name="{x:Static p:Resources.Title}"
-                            x:Name="Title" Grid.Column="1"
-                            Text="{Binding Result.Title}"
-                            FontWeight="SemiBold"
-                            FontSize="20"
-                            Margin="0,0,0,-2"
-                            VerticalAlignment="Bottom"/>
+                        <TextBlock AutomationProperties.Name="{x:Static p:Resources.Title}"
+                                   x:Name="Title"
+                                   Grid.Column="1"
+                                   FontSize="20"
+                                   Margin="0,0,0,-2"
+                                   VerticalAlignment="Bottom">
+                               <viewmodel:ResultsViewModel.FormattedText>
+                                    <MultiBinding Converter="{StaticResource highlightTextConverter}">
+                                        <Binding Path="Result.Title" />
+                                        <Binding Path="Result.TitleHighlightData" />
+                                        <Binding RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type ListViewItem}}"
+                                                 Path="IsSelected" />
+                                    </MultiBinding>
+                                </viewmodel:ResultsViewModel.FormattedText>
+                        </TextBlock>
                         <TextBlock
                             AutomationProperties.Name="{x:Static p:Resources.Subtitle}"
                             x:Name="Path"