Dumpable component to use a doafter to empty storage into a disposal unit, placeable surface, or the ground (#7792)

Content.Shared/Storage/Components/DumpableComponent.cs

@@ -0,0 +1,23 @@
+using System.Threading;
+
+namespace Content.Shared.Storage.Components
+{
+    /// <summary>
+    /// Lets you dump this container on the ground using a verb,
+    /// or when interacting with it on a disposal unit or placeable surface.
+    /// </summary>
+    [RegisterComponent]
+    public sealed class DumpableComponent : Component
+    {
+        /// <summary>
+        /// How long each item adds to the doafter.
+        /// </summary>
+        [DataField("delayPerItem")]
+        public TimeSpan DelayPerItem = TimeSpan.FromSeconds(0.2);
+
+        /// <summary>
+        /// Cancellation token for the doafter.
+        /// <summary>
+        public CancellationTokenSource? CancelToken;
+    }
+}

Content.Shared/Storage/SharedStorageComponent.cs

@@ -9,7 +9,7 @@ using Robust.Shared.Serialization;
 namespace Content.Shared.Storage
 {
     [NetworkedComponent()]
-    public abstract class SharedStorageComponent : Component, IDraggable
+    public abstract class SharedStorageComponent : Component
     {
         [Serializable, NetSerializable]
         public sealed class StorageBoundUserInterfaceState : BoundUserInterfaceState
@@ -56,32 +56,6 @@ namespace Content.Shared.Storage
         /// <param name="entity">The entity to remove</param>
         /// <returns>True if no longer in storage, false otherwise</returns>
         public abstract bool Remove(EntityUid entity);
-
-        bool IDraggable.CanDrop(CanDropEvent args)
-        {
-            return _entMan.TryGetComponent(args.Target, out PlaceableSurfaceComponent? placeable) &&
-                   placeable.IsPlaceable;
-        }
-
-        bool IDraggable.Drop(DragDropEvent eventArgs)
-        {
-            if (!EntitySystem.Get<ActionBlockerSystem>().CanInteract(eventArgs.User, eventArgs.Target))
-                return false;
-
-            var storedEntities = StoredEntities?.ToArray();
-
-            if (storedEntities == null)
-                return false;
-
-            // empty everything out
-            foreach (var storedEntity in storedEntities)
-            {
-                if (Remove(storedEntity))
-                    _entMan.GetComponent<TransformComponent>(storedEntity).WorldPosition = eventArgs.DropLocation.Position;
-            }
-
-            return true;
-        }
     }
 
     /// <summary>