Add missing class (moved from parser)

Terminal.Gui/ConsoleDrivers/AnsiEscapeSequenceRequest.cs

@@ -0,0 +1,54 @@
+#nullable enable
+namespace Terminal.Gui;
+
+/// <summary>
+///     Describes an ongoing ANSI request sent to the console.
+///     Use <see cref="ResponseReceived"/> to handle the response
+///     when console answers the request.
+/// </summary>
+public class AnsiEscapeSequenceRequest
+{
+    /// <summary>
+    ///     Request to send e.g. see
+    ///     <see>
+    ///         <cref>EscSeqUtils.CSI_SendDeviceAttributes.Request</cref>
+    ///     </see>
+    /// </summary>
+    public required string Request { get; init; }
+
+    /// <summary>
+    ///     Invoked when the console responds with an ANSI response code that matches the
+    ///     <see cref="Terminator"/>
+    /// </summary>
+    public Action<string> ResponseReceived;
+
+    /// <summary>
+    ///     <para>
+    ///         The terminator that uniquely identifies the type of response as responded
+    ///         by the console. e.g. for
+    ///         <see>
+    ///             <cref>EscSeqUtils.CSI_SendDeviceAttributes.Request</cref>
+    ///         </see>
+    ///         the terminator is
+    ///         <see>
+    ///             <cref>EscSeqUtils.CSI_SendDeviceAttributes.Terminator</cref>
+    ///         </see>
+    ///         .
+    ///     </para>
+    ///     <para>
+    ///         After sending a request, the first response with matching terminator will be matched
+    ///         to the oldest outstanding request.
+    ///     </para>
+    /// </summary>
+    public required string Terminator { get; init; }
+
+    /// <summary>
+    /// Sends the <see cref="Request"/> to the raw output stream of the current <see cref="ConsoleDriver"/>.
+    /// Only call this method from the main UI thread. You should use <see cref="AnsiRequestScheduler"/> if
+    /// sending many requests.
+    /// </summary>
+    public void Send ()
+    {
+        Application.Driver?.RawWrite (Request);
+    }
+}