Adds Support for Guidebook Buttons in UIs (#27891)

* Adds Support for Guidebook Buttons in UIs

* read it from the component

* the code is perfect

* moony review

---------

Co-authored-by: ike709 <ike709@github.com>

Content.Client/UserInterface/Controls/FancyWindow.xaml.cs

@@ -1,7 +1,10 @@
 using System.Numerics;
+using Content.Client.Guidebook;
+using Content.Client.Guidebook.Components;
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Prototypes;
 
 namespace Content.Client.UserInterface.Controls
 {
@@ -9,13 +12,17 @@ namespace Content.Client.UserInterface.Controls
     [Virtual]
     public partial class FancyWindow : BaseWindow
     {
+        [Dependency] private readonly IEntitySystemManager _sysMan = default!;
+        private GuidebookSystem? _guidebookSystem;
         private const int DRAG_MARGIN_SIZE = 7;
+        public const string StyleClassWindowHelpButton = "windowHelpButton";
 
         public FancyWindow()
         {
             RobustXamlLoader.Load(this);
 
             CloseButton.OnPressed += _ => Close();
+            HelpButton.OnPressed += _ => Help();
             XamlChildren = ContentsContainer.Children;
         }
 
@@ -25,6 +32,26 @@ namespace Content.Client.UserInterface.Controls
             set => WindowTitle.Text = value;
         }
 
+        private List<string>? _helpGuidebookIds;
+        public List<string>? HelpGuidebookIds
+        {
+            get => _helpGuidebookIds;
+            set
+            {
+                _helpGuidebookIds = value;
+                HelpButton.Disabled = _helpGuidebookIds == null;
+                HelpButton.Visible = !HelpButton.Disabled;
+            }
+        }
+
+        public void Help()
+        {
+            if (HelpGuidebookIds is null)
+                return;
+            _guidebookSystem ??= _sysMan.GetEntitySystem<GuidebookSystem>();
+            _guidebookSystem.OpenHelp(HelpGuidebookIds);
+        }
+
         protected override DragMode GetDragModeFor(Vector2 relativeMousePos)
         {
             var mode = DragMode.Move;