Action handler in inventory

Blazor/Blazor/Components/Inventory.razor

@@ -1,10 +1,18 @@
 @using Models;
 
 <h3>Inventory</h3>
-
+<CascadingValue Value="@this">
     <div class="css-grid">
         @for(int i = 0; i<InventoryList.size;i++)
         {
-            <ItemInventory items="@inventory.inventoryItems[i]" index="@i"/>
+            @if (inventory.inventoryItems[i] != null)
+            {
+                <ItemInventory items="@inventory.inventoryItems[i]" Index="@i" NoDrop=true />
+            }
+            else
+            {
+                <ItemInventory items="@inventory.inventoryItems[i]" Index="@i"/>
+            }
         }
     </div>
+</CascadingValue>

Blazor/Blazor/Components/Inventory.razor.cs

@@ -7,12 +7,18 @@ namespace Blazor.Components
 {
     partial class Inventory
     {
+        public InventoryItem CurrentDragItem { get; set; }
+        public ObservableCollection<InventoryAction> Actions { get; set; }
 
         public Inventory() 
         {
             Actions = new ObservableCollection<InventoryAction>();
         }
-        public ObservableCollection<InventoryAction> Actions { get; set; }
+        public void update()
+        {
+            this.StateHasChanged();
+        }
+
         [Parameter]
         public InventoryList inventory { get; set; }
         public void Add(Item item)

Blazor/Blazor/Components/InventoryAction.cs

@@ -6,6 +6,6 @@ namespace Blazor.Components
     {
         public string Action { get; set; }
         public int Index { get; set; }
-        public Item Item { get; set; }
+        public ItemInventory Item { get; set; }
     }
 }

Blazor/Blazor/Components/ItemInventory.razor

@@ -1,13 +1,18 @@
-<div class="item">
-    @if(items != null)
+<div class="item"
+     ondragover="event.preventDefault();"
+     @ondragstart="@OnDragStart"
+     @ondrop="@OnDrop"
+     @ondragenter="@OnDragEnter"
+     @ondragleave="@OnDragLeave">
+    @if(Items != null)
     {
-     @if(!string.IsNullOrWhiteSpace(items.item.ImageBase64))
+     @if(!string.IsNullOrWhiteSpace(Items.item.ImageBase64))
      {
-            <img src="data:image/png;base64, @(items.item.ImageBase64)" class="img-thumbnail" title="@items.item.DisplayName" alt="@items.item.DisplayName" style="min-width: 50px;" />
+            <img src="data:image/png;base64, @(Items.item.ImageBase64)" class="img-thumbnail" title="@Items.item.DisplayName" alt="@Items.item.DisplayName" style="min-width: 50px;" />
      }
      else
      {
-            <img src="images/default.png" class="img-thumbnail" title="@items.item.DisplayName" alt="@items.item.DisplayName" style="fill" />
+            <img src="images/default.png" class="img-thumbnail" title="@Items.item.DisplayName" alt="@Items.item.DisplayName" style="fill" />
      }
     }
     else

Blazor/Blazor/Components/ItemInventory.razor.cs

@@ -1,4 +1,5 @@
 using Blazor.Models;
+using Blazorise.Extensions;
 using Microsoft.AspNetCore.Components;
 
 namespace Blazor.Components
@@ -6,9 +7,65 @@ namespace Blazor.Components
     public partial class ItemInventory
     {
         [Parameter]
-        public InventoryItem items { get; set; }
+        public bool NoDrop { get; set; }
 
         [Parameter]
-        public int index { get; set; }
+        public InventoryItem Items { get; set; }
+
+        [Parameter]
+        public int Index { get; set; }
+
+        [CascadingParameter]
+        public Inventory Parent { get; set; }
+
+        public void OnDragStart()
+        {
+            if(!NoDrop)
+            {
+                return;
+            }
+            Parent.CurrentDragItem = this.Items;
+            Parent.inventory.inventoryItems[Index] = null;
+            Parent.update();
+        }
+        
+
+        public void OnDrop()
+        {
+            if (!NoDrop)
+            {
+                this.Items = Parent.CurrentDragItem;
+                NoDrop = true;
+            }
+
+            if (Parent.CurrentDragItem != this.Items)
+            {
+                InventoryItem tmp = Parent.CurrentDragItem;
+                Parent.CurrentDragItem = this.Items;
+                this.Items = tmp;
+            }
+            else
+            {       
+                int total = Parent.CurrentDragItem.Stack + this.Items.Stack;
+                if (total >this.Items.item.StackSize)
+                {
+                    this.Items.Stack = this.Items.item.StackSize;
+                    Parent.CurrentDragItem.Stack=total - this.Items.item.StackSize;
+                }
+                else
+                {
+                    this.Items.Stack = total;
+                }
+            }
+        }
+        internal void OnDragEnter()
+        {
+            Parent.Actions.Add(new InventoryAction  { Action = "Drag Enter", Item = this, Index = this.Index });
+        }
+
+        internal void OnDragLeave()
+        {
+            Parent.Actions.Add(new InventoryAction { Action = "Drag Leave", Item = this, Index = this.Index });
+        }
     }
 }

Blazor/Blazor/Pages/_Layout.cshtml

@@ -8,6 +8,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     @*<base href="https://codefirst.iut.uca.fr/containers/blazor-web-remiarnal/" />*@
+    <base href="~/"/>
     <link rel="stylesheet" href="css/bootstrap/bootstrap.min.css" />
     <link href="css/site.css" rel="stylesheet" />
     <link href="Blazor.styles.css" rel="stylesheet" />