Popup ECS Refactor (#4692)

Content.Server/Popups/PopupSystem.cs

@@ -0,0 +1,32 @@
+using Content.Shared.Popups;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Player;
+
+namespace Content.Server.Popups
+{
+    public class PopupSystem : SharedPopupSystem
+    {
+        public override void PopupCursor(string message, Filter filter)
+        {
+            RaiseNetworkEvent(new PopupCursorEvent(message), filter);
+        }
+
+        public override void PopupCoordinates(string message, EntityCoordinates coordinates, Filter filter)
+        {
+            RaiseNetworkEvent(new PopupCoordinatesEvent(message, coordinates), filter);
+        }
+
+        public override void PopupEntity(string message, EntityUid uid, Filter filter)
+        {
+            RaiseNetworkEvent(new PopupEntityEvent(message, uid), filter);
+        }
+
+        public override Filter GetFilterFromEntity(IEntity entity)
+        {
+            return entity.TryGetComponent(out ActorComponent? actor)
+                ? Filter.SinglePlayer(actor.PlayerSession) : Filter.Empty();
+        }
+    }
+}