updated spigot and added on close function for closing a gui

build.gradle.kts

@@ -24,8 +24,8 @@ repositories {
 }
 
 dependencies {
-    compileOnly("org.spigotmc", "spigot", "1.17-R0.1-SNAPSHOT")
-    testCompileOnly("org.spigotmc", "spigot", "1.17-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc", "spigot", "1.17.1-R0.1-SNAPSHOT")
+    testCompileOnly("org.spigotmc", "spigot", "1.17.1-R0.1-SNAPSHOT")
 
     api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.1")
     api("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.0")

src/main/kotlin/net/axay/kspigot/gui/GUI.kt

@@ -19,6 +19,7 @@ class GUIData<T : ForInventory>(
     val transitionTo: InventoryChangeEffect?,
     val transitionFrom: InventoryChangeEffect?,
     internal val generalOnClick: ((GUIClickEvent<T>) -> Unit)?,
+    internal val onClose: ((InventoryCloseEvent) -> Unit)?
 )
 
 abstract class GUI<T : ForInventory>(
@@ -95,9 +96,15 @@ class GUIIndividual<T : ForInventory>(
     }
 
     init {
-        if (resetOnClose) {
+        if (resetOnClose || data.onClose != null) {
             listen<InventoryCloseEvent> {
-                deleteInstance(it.player as? Player ?: return@listen)
+                if (data.onClose != null && playerInstances[it.player]?.bukkitInventory == it.inventory) {
+                    data.onClose.invoke(it)
+                }
+
+                if (resetOnClose) {
+                    deleteInstance(it.player as? Player ?: return@listen)
+                }
             }
         }
 

src/main/kotlin/net/axay/kspigot/gui/GUIBuilder.kt

@@ -3,6 +3,7 @@
 package net.axay.kspigot.gui
 
 import net.axay.kspigot.gui.elements.*
+import org.bukkit.event.inventory.InventoryCloseEvent
 import org.bukkit.inventory.ItemStack
 import kotlin.math.absoluteValue
 
@@ -46,6 +47,8 @@ class GUIBuilder<T : ForInventory>(
 
     private var onClickElement: ((GUIClickEvent<T>) -> Unit)? = null
 
+    private var onClose: ((InventoryCloseEvent) -> Unit)? = null
+
     /**
      * Opens the builder for a new page and adds
      * the new page to the GUI.
@@ -63,8 +66,12 @@ class GUIBuilder<T : ForInventory>(
         onClickElement = onClick
     }
 
+    fun onClose(onClose: (InventoryCloseEvent) -> Unit) {
+        this.onClose = onClose
+    }
+
     internal fun build() = guiCreator.createInstance(
-        GUIData(type, title, guiPages, defaultPage, transitionTo, transitionFrom, onClickElement)
+        GUIData(type, title, guiPages, defaultPage, transitionTo, transitionFrom, onClickElement, onClose)
     )
 }