Hud refactor (#7202)

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>
Co-authored-by: Jezithyr <jmaster9999@gmail.com>
Co-authored-by: Jezithyr <Jezithyr@gmail.com>
Co-authored-by: Visne <39844191+Visne@users.noreply.github.com>
Co-authored-by: wrexbe <wrexbe@protonmail.com>
Co-authored-by: wrexbe <81056464+wrexbe@users.noreply.github.com>

Content.Client/UserInterface/Systems/Inventory/Controls/ItemSlotUIContainer.cs

@@ -0,0 +1,129 @@
+using System.Diagnostics.CodeAnalysis;
+using Content.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Systems.Inventory.Controls;
+
+public interface IItemslotUIContainer
+{
+    public bool TryRegisterButton(SlotControl control, string newSlotName);
+
+    public bool TryAddButton(SlotControl control);
+}
+
+[Virtual]
+public abstract class ItemSlotUIContainer<T> : GridContainer, IItemslotUIContainer where T : SlotControl
+{
+    protected readonly Dictionary<string, T> Buttons = new();
+
+    public virtual bool TryAddButton(T newButton, out T button)
+    {
+        var tempButton = AddButton(newButton);
+        if (tempButton == null)
+        {
+            button = newButton;
+            return false;
+        }
+
+        button = newButton;
+        return true;
+    }
+
+    public void ClearButtons()
+    {
+        foreach (var button in Buttons.Values)
+        {
+            button.Dispose();
+        }
+
+        Buttons.Clear();
+    }
+
+    public bool TryRegisterButton(SlotControl control, string newSlotName)
+    {
+        if (newSlotName == "")
+            return false;
+        if (!(control is T slotButton))
+            return false;
+        if (Buttons.TryGetValue(newSlotName, out var foundButton))
+        {
+            if (control == foundButton)
+                return true; //if the slotName is already set do nothing
+            throw new Exception("Could not update button to slot:" + newSlotName + " slot already assigned!");
+        }
+
+        Buttons.Remove(slotButton.SlotName);
+        AddButton(slotButton);
+        return true;
+    }
+
+    public bool TryAddButton(SlotControl control)
+    {
+        if (control is not T newButton)
+            return false;
+        return AddButton(newButton) != null;
+    }
+
+    public virtual T? AddButton(T newButton)
+    {
+        if (!Children.Contains(newButton) && newButton.Parent == null && newButton.SlotName != "")
+            AddChild(newButton);
+        return AddButtonToDict(newButton);
+    }
+
+    protected virtual T? AddButtonToDict(T newButton)
+    {
+        if (newButton.SlotName == "")
+        {
+            Logger.Warning("Could not add button " + newButton.Name + "No slotname");
+        }
+
+        return !Buttons.TryAdd(newButton.SlotName, newButton) ? null : newButton;
+    }
+
+    public virtual void RemoveButton(string slotName)
+    {
+        if (!Buttons.TryGetValue(slotName, out var button))
+            return;
+        RemoveButton(button);
+    }
+
+    public virtual void RemoveButtons(params string[] slotNames)
+    {
+        foreach (var slotName in slotNames)
+        {
+            RemoveButton(slotName);
+        }
+    }
+
+    public virtual void RemoveButtons(params T?[] buttons)
+    {
+        foreach (var button in buttons)
+        {
+            if (button != null)
+                RemoveButton(button);
+        }
+    }
+
+    protected virtual void RemoveButtonFromDict(T button)
+    {
+        Buttons.Remove(button.SlotName);
+    }
+
+    public virtual void RemoveButton(T button)
+    {
+        RemoveButtonFromDict(button);
+        Children.Remove(button);
+        button.Dispose();
+    }
+
+    public virtual T? GetButton(string slotName)
+    {
+        return !Buttons.TryGetValue(slotName, out var button) ? null : button;
+    }
+
+    public virtual bool TryGetButton(string slotName, [NotNullWhen(true)] out T? button)
+    {
+        return (button = GetButton(slotName)) != null;
+    }
+}