Fix item views not unsubscribing themselves from model

Assets/Prefabs/GridViewItem.prefab

@@ -135,6 +135,7 @@ GameObject:
   - component: {fileID: 1355062804588728591}
   - component: {fileID: 6276336569359545557}
   - component: {fileID: 4391249473562572445}
+  - component: {fileID: 2521131620876806752}
   m_Layer: 5
   m_Name: Name
   m_TagString: Untagged
@@ -280,6 +281,18 @@ MonoBehaviour:
   - {fileID: 0}
   m_baseMaterial: {fileID: 0}
   m_maskOffset: {x: 0, y: 0, z: 0, w: 0}
+--- !u!114 &2521131620876806752
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1245163151616179787}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: f1bf98089f9db1b4aacb219d05609744, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
 --- !u!1 &1522873078225282773
 GameObject:
   m_ObjectHideFlags: 0

Assets/Scripts/Shop/Components.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: fa069fdb6941fa247b6d3ca2cfcc0307
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Shop/Components/ItemNameDisplay.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using TMPro;
+using UnityEngine;
+
+/// <summary>
+/// This class' only purpose is to set the name of an item view prototype. Could be the item itself, or the infobox, or anything!
+/// </summary>
+[RequireComponent(typeof(TextMeshProUGUI))]
+public class ItemNameDisplay : MonoBehaviour
+{
+    private TextMeshProUGUI text;
+    private void Start()
+    {
+        text = GetComponent<TextMeshProUGUI>();     // Because of the meta tag, Unity will make sure this exists. No sanity checks
+    }
+
+    public void SetName(string name)
+    {
+        if(text == null) text = GetComponent<TextMeshProUGUI>();  // Just in case this gets called before Start()
+        text.text = name;
+    }
+}

Assets/Scripts/Shop/Components/ItemNameDisplay.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f1bf98089f9db1b4aacb219d05609744
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Shop/Controller/MouseController.cs

@@ -25,8 +25,9 @@ public class MouseController : ShopController, IPointerClickHandler
     {
         if (itemToSelect != null)
         {
-            SelectItem(itemToSelect);
+            var item = itemToSelect;    // Temporarily remember the selected item
             itemToSelect = null;//Now that the item was selected, set itemToSelect back to null
+            SelectItem(item);   // Use the item we remembered, so itemToSelect can be reset even in case of errors or so
         }
     }
 

Assets/Scripts/Shop/Model/BuyModel.cs

@@ -18,9 +18,9 @@ public class BuyModel : ShopModel
 
     public override void ConfirmSelectedItem()
     {
-        OnRemove(GetSelectedItem());    // If there's a view subscribed, this will probably remove the item from it
         inventory.RemoveItemByIndex(selectedItemIndex);    // Before removing the item from the model's actual inventory
-        SelectItemByIndex(--selectedItemIndex);
+        OnRemove(GetSelectedItem());    // If there's a view subscribed, this will probably remove the item from it
+        SelectItemByIndex(selectedItemIndex > inventory.GetItemCount() ? --selectedItemIndex : selectedItemIndex);
     }
 
 }

Assets/Scripts/Shop/Model/ShopModel.cs

@@ -108,7 +108,9 @@ public abstract class ShopModel : IModelObservable<Item>
 
     public void OnRemove(Item val)
     {
-        foreach (var observer in observers)
+        // We copy the list so we don't break it while iterating, as it's likely OnRemove will cause an object to unsub
+        var observerCopy = observers.ToArray();   
+        foreach (var observer in observerCopy)
             observer.OnRemoved(val);
     }
 

Assets/Scripts/Shop/View/ViewItemContainer.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using TMPro;
 using Unity.Collections.LowLevel.Unsafe;
 using UnityEngine;
 using UnityEngine.UI;
@@ -50,6 +51,7 @@ public class ViewItemContainer : MonoBehaviour, IItemContainer, IShopModelObserv
         //Stores the item
         this.item = item;
 
+        _unsubscriber = unsubscriber;
         //Sets the highlight image and infoPanel's visibility
         //if (isSelected) {
         //    highLight.SetActive(true);
@@ -59,6 +61,13 @@ public class ViewItemContainer : MonoBehaviour, IItemContainer, IShopModelObserv
         // Clones the first Sprite in the icon atlas that matches the iconName and uses it as the sprite of the icon image.
         Sprite sprite = iconAtlas.GetSprite(item.iconName);
         
+        // Sets name in all locations the prototype has a name component attached to
+        var nameComps = GetComponentsInChildren<ItemNameDisplay>(true); // Include inactives!
+        foreach (var name in nameComps)
+        {
+            name.SetName(item.iconName);    // Use iconname for now, debugging
+        }
+
         if (sprite != null) {
             icon.sprite = sprite;
         }
@@ -73,7 +82,7 @@ public class ViewItemContainer : MonoBehaviour, IItemContainer, IShopModelObserv
     public void OnRemoved(Item item)
     {
         if (item != Item) return;    // Well we only want this if the item removed from the model is actually ours!
-        _unsubscriber?.Dispose();    // Careful! If we don't make this thing aware that it manages itself, and we forget to manage it, we have a memory leak
+        _unsubscriber.Dispose();    // Careful! If we don't make this thing aware that it manages itself, and we forget to manage it, we have a memory leak
         Destroy(gameObject);
     }