Finish Avalonia browser enablement

Agent-Logs-Url: https://github.com/OpenLoco/ObjectEditor/sessions/604fe8ad-6228-459c-9512-e3c03dd2c3eb

Co-authored-by: LeftofZen <7483209+LeftofZen@users.noreply.github.com>

Author: Copilot

Definitions/Definitions.csproj

@@ -44,6 +44,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Authorization" Version="10.0.5" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="10.0.5" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.5" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.5">
@@ -55,10 +56,6 @@
     <PackageReference Include="System.IO.Hashing" Version="10.0.5" />
   </ItemGroup>
 
-  <ItemGroup>
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\Common\Common.csproj" />
   </ItemGroup>
@@ -67,5 +64,3 @@
 
 
 
-
-

Definitions/Web/ClientHelpers.cs

@@ -1,5 +1,4 @@
 using Common.Logging;
-using Microsoft.AspNetCore.Http;
 using System.Net.Http.Json;
 
 namespace Definitions.Web;

Gui.Browser/Gui.Browser.csproj

@@ -6,6 +6,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <StaticWebAssetProjectMode>Default</StaticWebAssetProjectMode>
+    <BuildingForBrowser>true</BuildingForBrowser>
   </PropertyGroup>
 
   <ItemGroup>

Gui/Gui.csproj

@@ -1,13 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <OutputType>WinExe</OutputType>
+    <OutputType Condition="'$(BuildingForBrowser)' == 'true'">Library</OutputType>
+    <OutputType Condition="'$(BuildingForBrowser)' != 'true'">WinExe</OutputType>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>
     <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
     <ApplicationManifest>app.manifest</ApplicationManifest>
     <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
-    <StartupObject>Gui.Program</StartupObject>
+    <StartupObject Condition="'$(BuildingForBrowser)' != 'true'">Gui.Program</StartupObject>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <RepositoryUrl>https://github.com/OpenLoco/OpenLocoObjectEditor</RepositoryUrl>
@@ -19,7 +20,7 @@
     <Version>1.2.3</Version>
     <Authors>LeftofZen</Authors>
     <ProduceReferenceAssembly>False</ProduceReferenceAssembly>
-    <ApplicationIcon>Assets\loco_icon.ico</ApplicationIcon>
+    <ApplicationIcon Condition="'$(BuildingForBrowser)' != 'true'">Assets\loco_icon.ico</ApplicationIcon>
   </PropertyGroup>
 
   <ItemGroup>
@@ -59,6 +60,7 @@
     <PackageReference Include="NAudio" Version="2.3.0" />
     <PackageReference Include="NuGet.Versioning" Version="7.3.0" />
     <PackageReference Include="PanAndZoom" Version="11.3.9.1" />
+    <PackageReference Include="ReactiveUI.Avalonia" Version="11.4.12" />
     <PackageReference Include="ReactiveUI.Fody" Version="19.5.41" />
     <PackageReference Include="ReactiveUI.Validation" Version="7.0.5" />
     <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="2.1.7" />
@@ -67,7 +69,7 @@
   <ItemGroup>
     <ProjectReference Include="..\Common\Common.csproj" />
     <ProjectReference Include="..\Definitions\Definitions.csproj" />
-    <ProjectReference Include="..\GuiUpdater\GuiUpdater.csproj" />
+    <ProjectReference Condition="'$(BuildingForBrowser)' != 'true'" Include="..\GuiUpdater\GuiUpdater.csproj" />
     <ProjectReference Include="..\Index\Index.csproj" />
   </ItemGroup>
 

README.md

@@ -158,6 +158,11 @@ A modern implementation of 'LocoTool' for Locomotion `dat` file parsing and edit
 # Building
 - Open `ObjectEditor.sln` in Visual Studio
   - You'll need the `Avalonia for Visual Studio` plugin to use the visual XAML previewer, but it isn't required to actually build or run the editor
+- Desktop build: `dotnet build Gui/Gui.csproj`
+- Browser build: `dotnet build Gui.Browser/Gui.Browser.csproj -p:BuildingForBrowser=true`
+- Browser run: `dotnet run --project Gui.Browser/Gui.Browser.csproj`
+  - This starts Avalonia's local WebAssembly host and prints the local browser URL to open
+  - Desktop-only features such as opening local folders and separate popup windows remain unavailable in the browser build
 
 # Deploying
 See `build.sh` and `tag.sh`