Add Alt-click insertion to ItemSlots (#15094)

Content.Shared/Containers/ItemSlot/ItemSlotsSystem.cs

@@ -43,7 +43,7 @@ namespace Content.Shared.Containers.ItemSlots
             SubscribeLocalEvent<ItemSlotsComponent, InteractHandEvent>(OnInteractHand);
             SubscribeLocalEvent<ItemSlotsComponent, UseInHandEvent>(OnUseInHand);
 
-            SubscribeLocalEvent<ItemSlotsComponent, GetVerbsEvent<AlternativeVerb>>(AddEjectVerbs);
+            SubscribeLocalEvent<ItemSlotsComponent, GetVerbsEvent<AlternativeVerb>>(AddAlternativeVerbs);
             SubscribeLocalEvent<ItemSlotsComponent, GetVerbsEvent<InteractionVerb>>(AddInteractionVerbsVerbs);
 
             SubscribeLocalEvent<ItemSlotsComponent, BreakageEventArgs>(OnBreak);
@@ -405,13 +405,62 @@ namespace Content.Shared.Containers.ItemSlots
         #endregion
 
         #region Verbs
-        private void AddEjectVerbs(EntityUid uid, ItemSlotsComponent itemSlots, GetVerbsEvent<AlternativeVerb> args)
+        private void AddAlternativeVerbs(EntityUid uid, ItemSlotsComponent itemSlots, GetVerbsEvent<AlternativeVerb> args)
         {
             if (args.Hands == null || !args.CanAccess ||!args.CanInteract)
             {
                 return;
             }
 
+            // Add the insert-item verbs
+            if (args.Using != null && _actionBlockerSystem.CanDrop(args.User))
+            {
+                var canInsertAny = false;
+                foreach (var slot in itemSlots.Slots.Values)
+                {
+                    // Disable slot insert if InsertOnInteract is true
+                    if (slot.InsertOnInteract || !CanInsert(uid, args.Using.Value, slot))
+                        continue;
+
+                    var verbSubject = slot.Name != string.Empty
+                        ? Loc.GetString(slot.Name)
+                        : Name(args.Using.Value) ?? string.Empty;
+
+                    AlternativeVerb verb = new();
+                    verb.IconEntity = args.Using;
+                    verb.Act = () => Insert(uid, slot, args.Using.Value, args.User, excludeUserAudio: true);
+
+                    if (slot.InsertVerbText != null)
+                    {
+                        verb.Text = Loc.GetString(slot.InsertVerbText);
+                        verb.Icon = new SpriteSpecifier.Texture(
+                            new ResourcePath("/Textures/Interface/VerbIcons/insert.svg.192dpi.png"));
+                    }
+                    else if (slot.EjectOnInteract)
+                    {
+                        // Inserting/ejecting is a primary interaction for this entity. Instead of using the insert
+                        // category, we will use a single "Place <item>" verb.
+                        verb.Text = Loc.GetString("place-item-verb-text", ("subject", verbSubject));
+                        verb.Icon = new SpriteSpecifier.Texture(
+                            new ResourcePath("/Textures/Interface/VerbIcons/drop.svg.192dpi.png"));
+                    }
+                    else
+                    {
+                        verb.Category = VerbCategory.Insert;
+                        verb.Text = verbSubject;
+                    }
+
+                    verb.Priority = slot.Priority;
+                    args.Verbs.Add(verb);
+                    canInsertAny = true;
+                }
+
+                // If can insert then insert. Don't run eject verbs.
+                if (canInsertAny)
+                    return;
+            }
+
+            // Add the eject-item verbs
             foreach (var slot in itemSlots.Slots.Values)
             {
                 if (slot.EjectOnInteract)

Resources/Prototypes/Entities/Objects/Specific/Janitorial/janitor.yml

@@ -165,11 +165,13 @@
             tags:
               - Mop
           insertOnInteract: false # or it conflicts with bucket logic
+          priority: 4 # Higher than trash bag slot
         trashbag_slot:
           name: Bag
           whitelist:
             tags:
               - TrashBag
+          priority: 3 # Higher than drinking priority
     - type: Fixtures
       fixtures:
       - shape: