Removed "Inventory" from the GUI API names

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

@@ -0,0 +1,50 @@
+package net.axay.kspigot.gui
+
+import net.axay.kspigot.event.listen
+import org.bukkit.event.inventory.InventoryAction
+import org.bukkit.event.inventory.InventoryClickEvent
+
+object GUIHolder : AutoCloseable {
+
+    private val registered = HashSet<GUI<ForInventory>>()
+
+    fun register(GUI: GUI<ForInventory>) {
+        registered.add(GUI)
+    }
+
+    fun unregister(GUI: GUI<ForInventory>) {
+        registered.remove(GUI)
+    }
+
+    init {
+
+        listen<InventoryClickEvent> {
+
+            val clickedInv = it.clickedInventory ?: return@listen
+
+            val inv = registered.find { search -> search.isThisInv(clickedInv) } ?: return@listen
+
+            if (inv.isInMove) {
+                it.isCancelled = true
+                return@listen
+            }
+
+            if (it.action.isGUIClick)
+                inv.currentPage.slots[it.slot]?.onClick(GUIClickEvent(it, inv)) ?: kotlin.run {
+                    it.isCancelled = true
+                }
+            else
+                it.isCancelled = true
+
+        }
+    }
+
+    override fun close() {
+        registered.forEach { inv -> inv.bukkitInventory.viewers.forEach { it.closeInventory() } }
+        registered.clear()
+    }
+
+}
+
+private val InventoryAction.isGUIClick
+    get() = this == InventoryAction.PICKUP_ALL || this == InventoryAction.PICKUP_HALF