feat: add bottom inventory click event and BukkitItem flags

core/src/main/java/io/typst/bukkit/view/BottomClickEvent.java

@@ -0,0 +1,18 @@
+package io.typst.bukkit.view;
+
+import lombok.Data;
+import lombok.With;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
+import org.bukkit.event.inventory.InventoryAction;
+import org.bukkit.inventory.ItemStack;
+
+@Data
+@With
+public class BottomClickEvent {
+    private final ChestView view;
+    private final Player player;
+    private final ClickType click;
+    private final ItemStack clickItem;
+    private final InventoryAction action;
+}

core/src/main/java/io/typst/bukkit/view/BukkitView.java

@@ -106,6 +106,20 @@ public void onClick(InventoryClickEvent e) {
             // update user input items
             Player p = (Player) e.getWhoClicked();
             ViewControl viewControl = view.getContents().getControls().get(e.getRawSlot());
+
+            // bottom inventory click event
+            if (e.getView().getBottomInventory() == e.getClickedInventory()) {
+                ViewAction action;
+                try {
+                    action = view.getOnBottomClick().apply(new BottomClickEvent(view, p, e.getClick(), e.getCurrentItem(), e.getAction()));
+                } catch (Exception ex) {
+                    plugin.getLogger().log(Level.WARNING, ex, () -> "Error on bottom inventory click!");
+                    // To block after actions
+                    action = ViewAction.CLOSE;
+                }
+                handleAction(p, holder, action);
+            }
+
             // Cancel if tried to move the control items
             switch (e.getClick()) {
                 case LEFT:

core/src/main/java/io/typst/bukkit/view/ChestView.java

@@ -25,6 +25,8 @@ public class ChestView {
     @Builder.Default
     Function<CloseEvent, ViewAction> onClose = e -> ViewAction.NOTHING;
     @Builder.Default
+    Function<BottomClickEvent, ViewAction> onBottomClick = e -> ViewAction.NOTHING;
+    @Builder.Default
     Consumer<UpdateEvent> onContentsUpdate = e -> {
     };
     @Builder.Default

core/src/main/java/io/typst/bukkit/view/item/BukkitItem.java

@@ -4,6 +4,7 @@
 import lombok.With;
 import org.bukkit.Material;
 import org.bukkit.enchantments.Enchantment;
+import org.bukkit.inventory.ItemFlag;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
@@ -19,9 +20,10 @@ public class BukkitItem {
     private final List<String> lore;
     private final Integer modelData;
     private final Map<Enchantment, Integer> enchants;
+    private final Set<ItemFlag> flags;
 
     public static BukkitItem ofJust(Material material) {
-        return of(material, 1, (short) 0, "", Collections.emptyList(), 0, Collections.emptyMap());
+        return of(material, 1, (short) 0, "", Collections.emptyList(), 0, Collections.emptyMap(), Collections.emptySet());
     }
 
     public static BukkitItem from(ItemStack item) {
@@ -33,7 +35,8 @@ public static BukkitItem from(ItemStack item) {
             meta != null && meta.hasDisplayName() ? meta.getDisplayName() : "",
             meta != null && meta.hasLore() ? meta.getLore() : Collections.emptyList(),
             meta != null && meta.hasCustomModelData() ? meta.getCustomModelData() : 0,
-            meta != null && meta.hasEnchants() ? meta.getEnchants() : Collections.emptyMap()
+            meta != null && meta.hasEnchants() ? meta.getEnchants() : Collections.emptyMap(),
+            meta != null && meta.getItemFlags().isEmpty() ? meta.getItemFlags() : Collections.emptySet()
         );
     }
 
@@ -64,6 +67,9 @@ public void update(ItemStack x) {
             if (getModelData() != 0) {
                 meta.setCustomModelData(getModelData());
             }
+            if (!getFlags().isEmpty()) {
+                meta.addItemFlags(getFlags().toArray(new ItemFlag[0]));
+            }
             x.setItemMeta(meta);
         }
         for (Map.Entry<Enchantment, Integer> pair : getEnchants().entrySet()) {