Link to reagent ingredients on the same Guidebook page (#36700)

* Add in-page links for guidebook reagent recipes

* Add links to microwave recipes

* This function is too specific to be in Control extensions

* Better naming

* Wrap RichTextLabel instead of subclassing

* "Activate" is ambiguous

Content.Client/Guidebook/Controls/GuidebookWindow.xaml.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics;
 using System.Linq;
 using Content.Client.Guidebook.RichText;
 using Content.Client.UserInterface.ControlExtensions;
@@ -6,6 +7,7 @@ using Content.Client.UserInterface.Controls.FancyTree;
 using Content.Client.UserInterface.Systems.Info;
 using Content.Shared.Guidebook;
 using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.XAML;
 using Robust.Shared.ContentPack;
@@ -14,7 +16,7 @@ using Robust.Shared.Prototypes;
 namespace Content.Client.Guidebook.Controls;
 
 [GenerateTypedNameReferences]
-public sealed partial class GuidebookWindow : FancyWindow, ILinkClickHandler
+public sealed partial class GuidebookWindow : FancyWindow, ILinkClickHandler, IAnchorClickHandler
 {
     [Dependency] private readonly DocumentParsingManager _parsingMan = default!;
     [Dependency] private readonly IResourceManager _resourceManager = default!;
@@ -53,6 +55,38 @@ public sealed partial class GuidebookWindow : FancyWindow, ILinkClickHandler
             ShowGuide(entry);
     }
 
+    public void HandleAnchor(IPrototypeLinkControl prototypeLinkControl)
+    {
+        var prototype = prototypeLinkControl.LinkedPrototype;
+        if (prototype == null)
+            return;
+
+        var (linkableControls, _) = GetLinkableControlsAndLinks(EntryContainer);
+        foreach (var linkableControl in linkableControls)
+        {
+            if (linkableControl.RepresentedPrototype != prototype)
+                continue;
+
+            if (linkableControl is not Control control)
+                return;
+
+            // Check if the target item is currently filtered out
+            if (!control.Visible)
+                control.Visible = true;
+
+            UserInterfaceManager.DeferAction(() =>
+            {
+                if (control.GetControlScrollPosition() is not {} position)
+                    return;
+
+                Scroll.HScrollTarget = position.X;
+                Scroll.VScrollTarget = position.Y;
+            });
+
+            break;
+        }
+    }
+
     private void OnSelectionChanged(TreeItem? item)
     {
         if (item != null && item.Metadata is GuideEntry entry)
@@ -94,6 +128,23 @@ public sealed partial class GuidebookWindow : FancyWindow, ILinkClickHandler
         }
 
         LastEntry = entry.Id;
+
+        var (linkableControls, linkControls) = GetLinkableControlsAndLinks(EntryContainer);
+
+        HashSet<IPrototype> availablePrototypeLinks = new();
+        foreach (var linkableControl in linkableControls)
+        {
+            var prototype = linkableControl.RepresentedPrototype;
+            if (prototype != null)
+                availablePrototypeLinks.Add(prototype);
+        }
+
+        foreach (var linkControl in linkControls)
+        {
+            var prototype = linkControl.LinkedPrototype;
+            if (prototype != null && availablePrototypeLinks.Contains(prototype))
+                linkControl.EnablePrototypeLink();
+        }
     }
 
     public void UpdateGuides(
@@ -209,4 +260,30 @@ public sealed partial class GuidebookWindow : FancyWindow, ILinkClickHandler
             }
         }
     }
+
+    private static (List<IPrototypeRepresentationControl>, List<IPrototypeLinkControl>) GetLinkableControlsAndLinks(Control parent)
+    {
+        List<IPrototypeRepresentationControl> linkableList = new();
+        List<IPrototypeLinkControl> linkList = new();
+
+        foreach (var child in parent.Children)
+        {
+            var hasChildren = child.ChildCount > 0;
+
+            if (child is IPrototypeLinkControl linkChild)
+                linkList.Add(linkChild);
+            else if (child is IPrototypeRepresentationControl linkableChild)
+                linkableList.Add(linkableChild);
+
+            if (!hasChildren)
+                continue;
+
+            var (childLinkableList, childLinkList) = GetLinkableControlsAndLinks(child);
+
+            linkableList.AddRange(childLinkableList);
+            linkList.AddRange(childLinkList);
+        }
+
+        return (linkableList, linkList);
+    }
 }