Add userDataFolder config option

Author: AshleyScirra

src/Config.cpp

@@ -14,6 +14,7 @@ ConfigJson LoadConfigJson(const std::string& path)
 	ret.additionalBrowserArguments = "";
 	ret.hostingMode = "";
 	ret.browserExecutableFolder = "";
+	ret.userDataFolder = "";
 
 	// If file does not exist, just use defaults
 	if (!FileExists(path))
@@ -47,5 +48,8 @@ ConfigJson LoadConfigJson(const std::string& path)
 	if (parsedJson.contains("browserExecutableFolder"))
 		ret.browserExecutableFolder = parsedJson["browserExecutableFolder"].get<std::string>();
 
+	if (parsedJson.contains("userDataFolder"))
+		ret.userDataFolder = parsedJson["userDataFolder"].get<std::string>();
+
 	return ret;
 }

src/Config.h

@@ -8,6 +8,7 @@ struct ConfigJson {
 	std::string additionalBrowserArguments;
 	std::string hostingMode;
 	std::string browserExecutableFolder;
+	std::string userDataFolder;
 };
 
 ConfigJson LoadConfigJson(const std::string& path);

src/WebView.cpp

@@ -138,7 +138,12 @@ int CALLBACK WinMain(
 		options->put_AdditionalBrowserArguments(Utf8ToWide(configJson.additionalBrowserArguments).c_str());
 	}
 
-	CreateCoreWebView2EnvironmentWithOptions(browserExecutableFolder, nullptr, options.Get(),
+	// If the userDataFolder option is specified, pass it as an LPCWSTR; however if it is not specified,
+	// pass nullptr for the corresponding parameter in CreateCoreWebView2EnvironmentWithOptions().
+	std::wstring userDataFolderWstr = Utf8ToWide(configJson.userDataFolder);
+	LPCWSTR userDataFolder = (userDataFolderWstr.empty() ? nullptr : userDataFolderWstr.c_str());
+
+	CreateCoreWebView2EnvironmentWithOptions(browserExecutableFolder, userDataFolder, options.Get(),
 		Callback<ICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler>(
 			[hWnd, configJson](HRESULT result, ICoreWebView2Environment* env) -> HRESULT
 			{