Add readme and fix look up bug

src/Tools/Avalonia.PreviewHost/Views/MainWindow.axaml

@@ -8,7 +8,7 @@
         mc:Ignorable="d" 
         x:Class="PreviewHost.Views.MainWindow"
         x:DataType="vm:MainViewModel"
-        Icon="/Assets/avalonia-logo.ico"
+        Icon="/Assets/consolonia-logo.ico"
         Title="PreviewHost">
 
     <Grid RowDefinitions="Auto *" Background="#ff09161e">

src/Tools/Consolonia.PreviewHost/App.axaml.cs

@@ -1,12 +1,9 @@
 using System.Globalization;
-using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Markup.Xaml;
-using Avalonia.Media;
 using Consolonia.Core.Infrastructure;
 using Consolonia.PreviewHost.Views;
 using Consolonia.PreviewHost.ViewModels;
-using Consolonia.Themes.TurboVision.Templates;
 
 namespace Consolonia.PreviewHost
 {
@@ -38,15 +35,24 @@ public override void OnFrameworkInitializationCompleted()
                 var path = applicationLifetime.Args!.FirstOrDefault();
                 if (!String.IsNullOrEmpty(path))
                 {
-                    path = Path.GetFullPath(path);
-                    var projectFile = FindProjectFileFromPath(path);
+                    string folder;
+                    if (Path.IsPathFullyQualified(path))
+                    {
+                        folder = Path.GetDirectoryName(path)!;
+                    }
+                    else
+                        folder = Environment.CurrentDirectory;
+                    ArgumentNullException.ThrowIfNull(folder);
+                    var projectFile = FindProjectFileFromPath(folder);
 
                     appViewModel.Project = new ProjectViewModel(projectFile);
                     if (path.EndsWith(".axaml", StringComparison.OrdinalIgnoreCase))
                     {
                         applicationLifetime!.MainWindow = new HeadlessWindow()
                         {
-                            DataContext = appViewModel.Project.Files.Single(f => f.FullName!.Equals(path, StringComparison.OrdinalIgnoreCase))
+                            DataContext = appViewModel.Project.Files.SingleOrDefault(f => f.FullName!.Equals(path, StringComparison.OrdinalIgnoreCase))
+                                ?? appViewModel.Project.Files.SingleOrDefault(f => f.Name!.Equals(Path.GetFileName(path), StringComparison.OrdinalIgnoreCase))
+                                ?? throw new ArgumentException($"{path} not found in project", nameof(path))
                         };
                     }
                 }

src/Tools/Consolonia.PreviewHost/Consolonia.PreviewHost.csproj

@@ -9,6 +9,16 @@
         <ToolCommandName>Consolonia.PreviewHost</ToolCommandName>
     </PropertyGroup>
 
+    <PropertyGroup>
+        <PackageIcon>Icon.png</PackageIcon>
+        <PackageReadmeFile>readme.md</PackageReadmeFile>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <None Include="..\..\..\Icon.png" Pack="True" PackagePath="\" />
+        <None Include="readme.md" Pack="true" PackagePath="\" />
+    </ItemGroup>
+
     <ItemGroup>
         <ProjectReference Include="..\..\Consolonia.Core\Consolonia.Core.csproj" />
         <ProjectReference Include="..\..\Consolonia.PlatformSupport\Consolonia.PlatformSupport.csproj" />
@@ -23,14 +33,4 @@
         <PackageReference Include="Avalonia.Markup.Xaml.Loader" Version="$(AvaloniaVersion)" />
     </ItemGroup>
 
-    <ItemGroup>
-        <Compile Update="Views\HeadlessWindow.axaml.cs">
-            <DependentUpon>HeadlessWindow.axaml</DependentUpon>
-        </Compile>
-        <Compile Update="Views\MainWindow.axaml.cs">
-            <DependentUpon>MainWindow.axaml</DependentUpon>
-        </Compile>
-    </ItemGroup>
-
-
 </Project>

src/Tools/Consolonia.PreviewHost/Properties/launchSettings.json

@@ -6,7 +6,7 @@
     },
     "Consolonia.PreviewHost": {
       "commandName": "Project",
-      "commandLineArgs": "S:\\github\\Consolonia\\src\\Consolonia.Gallery",
+      "commandLineArgs": "GalleryTextBlock.axaml",
       "workingDirectory": "S:\\github\\Consolonia\\src\\Consolonia.Gallery"
     }
   }

src/Tools/Consolonia.PreviewHost/ViewModels/XamlFileViewModel.cs

@@ -56,6 +56,7 @@ public Control? Content
 
     public Control LoadXAML()
     {
+#pragma warning disable CA1031 // Do not catch general exception types
         try
         {
             string xaml = null!;
@@ -83,11 +84,11 @@ public Control LoadXAML()
             var content = AvaloniaRuntimeXamlLoader.Load(xaml, Assembly, designMode: true);
             if (content is Control control)
             {
-                Application.Current.TryGetResource("ThemeBorderBrush", null, out var borderBrush);
+                Application.Current!.TryGetResource("ThemeBorderBrush", null, out var borderBrush);
                 var panel = new Border()
                 {
                     BorderThickness = new Thickness(0,0,0,0),
-                    BorderBrush = (IBrush)borderBrush
+                    BorderBrush = (IBrush)borderBrush!
                 };
 
                 panel.Child = control;
@@ -114,10 +115,11 @@ public Control LoadXAML()
                 return new TextBlock() { Text = "Root element is not a control" };
             }
         }
-        catch (XmlException e)
+        catch (Exception e)
         {
             return new TextBlock() { Text = e.Message };
         }
+#pragma warning restore CA1031 // Do not catch general exception types
     }
 
     private void WatchFileChanges()

src/Tools/Consolonia.PreviewHost/readme.md

@@ -0,0 +1,39 @@
+# Consolonia.PreviewHost
+This is a tool which enables a live view of a consolonia axaml file, or a consolonia project. 
+
+## Installation
+To install the tool, you can use the following command:
+```
+dotnet tool install -g Consolonia.PreviewHost
+```
+
+## Usage
+To use the tool, you can use the following command:
+```
+Consolonia.PreviewHost <path-to-axaml-file>|<path-to-project-file>|<path-to-project-directory>
+```
+
+It will monitor the file or directory for changes, and will automatically update the preview when changes are detected.
+
+Run the following command to monitor the project or folder:
+
+``` Conoslonia.PreviewHost <path-to-project-file-or-folder> ```
+
+Run following command to monitor a given .axaml file. 
+
+``` Conoslonia.PreviewHost <.axaml file name> ```
+
+> NOTE: In single file mode the tool will exit when you hit escape key
+
+### Running inside Visual Studio
+1. Open the solution in Visual Studio.
+1. Open a Terminal (View -> Terminal).
+3. run the following command
+``` Consolonia.PreviewHost . ```
+
+### Running inside Visual Studio Code
+To integrate the tool with Visual Studio Code, you can use the following steps:
+1. Open the project directory in Visual Studio Code.
+2. Open a terminal inside of visual studio code
+3. run the following command
+``` Consolonia.PreviewHost . ```