Add item container changed event

runelite-mixins/src/main/java/net/runelite/mixins/RSItemContainerMixin.java

@@ -25,9 +25,12 @@
 package net.runelite.mixins;
 
 import net.runelite.api.Item;
+import net.runelite.api.events.ItemContainerChanged;
+import net.runelite.api.mixins.FieldHook;
 import net.runelite.api.mixins.Inject;
 import net.runelite.api.mixins.Mixin;
 import net.runelite.api.mixins.Shadow;
+import static net.runelite.client.callback.Hooks.deferredEventBus;
 import net.runelite.rs.api.RSClient;
 import net.runelite.rs.api.RSItem;
 import net.runelite.rs.api.RSItemContainer;
@@ -38,6 +41,9 @@ public abstract class RSItemContainerMixin implements RSItemContainer
 	@Shadow("clientInstance")
 	private static RSClient client;
 
+	@Inject
+	private int rl$lastCycle;
+
 	@Inject
 	@Override
 	public Item[] getItems()
@@ -57,4 +63,22 @@ public abstract class RSItemContainerMixin implements RSItemContainer
 		return items;
 	}
 
+	@FieldHook("stackSizes")
+	@Inject
+	public void stackSizesChanged(int idx)
+	{
+		int cycle = client.getGameCycle();
+		if (rl$lastCycle == cycle)
+		{
+			// Limit item container updates to one per cycle
+			return;
+		}
+
+		rl$lastCycle = cycle;
+
+		ItemContainerChanged event = new ItemContainerChanged();
+		event.setItemContainer(this);
+		deferredEventBus.post(event);
+	}
+
 }