3 New Items

Added AutoUpdateItem
Added CycleItem
Added AutoCycleItem

src/main/java/de/studiocode/invgui/item/impl/AutoCycleItem.java

@@ -0,0 +1,48 @@
+package de.studiocode.invgui.item.impl;
+
+import de.studiocode.invgui.InvGui;
+import de.studiocode.invgui.item.Item;
+import de.studiocode.invgui.item.itembuilder.ItemBuilder;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.scheduler.BukkitTask;
+
+/**
+ * An {@link Item} that automatically cycles through a predefined array of
+ * {@link ItemBuilder} at a predefined speed.
+ */
+public class AutoCycleItem extends BaseItem {
+    
+    private final ItemBuilder[] itemBuilders;
+    private final BukkitTask task;
+    
+    private int state = -1;
+    
+    public AutoCycleItem(int period, ItemBuilder... itemBuilders) {
+        this.itemBuilders = itemBuilders;
+        task = Bukkit.getScheduler().runTaskTimer(InvGui.getInstance().getPlugin(), this::cycle, 0, period);
+    }
+    
+    public void cancel() {
+        task.cancel();
+    }
+    
+    private void cycle() {
+        state++;
+        if (state == itemBuilders.length) state = 0;
+        notifyWindows();
+    }
+    
+    @Override
+    public ItemBuilder getItemBuilder() {
+        return itemBuilders[state];
+    }
+    
+    @Override
+    public void handleClick(ClickType clickType, Player player, InventoryClickEvent event) {
+        // empty
+    }
+    
+}

src/main/java/de/studiocode/invgui/item/impl/AutoUpdateItem.java

@@ -0,0 +1,28 @@
+package de.studiocode.invgui.item.impl;
+
+import de.studiocode.invgui.InvGui;
+import de.studiocode.invgui.item.Item;
+import de.studiocode.invgui.item.itembuilder.ItemBuilder;
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitTask;
+
+import java.util.function.Supplier;
+
+/**
+ * An {@link Item} that updates it's {@link ItemBuilder} every specified amount
+ * of ticks.
+ */
+public class AutoUpdateItem extends SupplierItem {
+    
+    private final BukkitTask task;
+    
+    public AutoUpdateItem(int period, Supplier<ItemBuilder> builderSupplier) {
+        super(builderSupplier);
+        task = Bukkit.getScheduler().runTaskTimer(InvGui.getInstance().getPlugin(), this::notifyWindows, 0, period);
+    }
+    
+    public void cancel() {
+        task.cancel();
+    }
+    
+}

src/main/java/de/studiocode/invgui/item/impl/CommandItem.java

@@ -1,5 +1,6 @@
 package de.studiocode.invgui.item.impl;
 
+import de.studiocode.invgui.item.Item;
 import de.studiocode.invgui.item.itembuilder.ItemBuilder;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
@@ -7,7 +8,7 @@ import org.bukkit.event.inventory.InventoryClickEvent;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * An item that will force a player to run a command or say something in the chat when clicked.
+ * An {@link Item} that will force a player to run a command or say something in the chat when clicked.
  */
 public class CommandItem extends SimpleItem {
     
@@ -22,4 +23,5 @@ public class CommandItem extends SimpleItem {
     public void handleClick(ClickType clickType, Player player, InventoryClickEvent event) {
         player.chat(command);
     }
+    
 }

src/main/java/de/studiocode/invgui/item/impl/CycleItem.java

@@ -0,0 +1,52 @@
+package de.studiocode.invgui.item.impl;
+
+import de.studiocode.invgui.item.Item;
+import de.studiocode.invgui.item.itembuilder.ItemBuilder;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Consumer;
+
+/**
+ * An {@link Item} that cycles trough a predefined array of {@link ItemBuilder}s when clicked.
+ */
+public class CycleItem extends BaseItem {
+    
+    private final Consumer<Integer> stateChangeHandler;
+    private final ItemBuilder[] states;
+    
+    private int state;
+    
+    public CycleItem(@Nullable Consumer<Integer> stateChangeHandler, @NotNull ItemBuilder... states) {
+        this.stateChangeHandler = stateChangeHandler;
+        this.states = states;
+    }
+    
+    @Override
+    public ItemBuilder getItemBuilder() {
+        return states[state];
+    }
+    
+    @Override
+    public void handleClick(ClickType clickType, Player player, InventoryClickEvent event) {
+        if (clickType.isLeftClick()) {
+            if (++state == states.length) state = 0;
+            handleStateChange();
+        } else if (clickType.isRightClick()) {
+            if (--state < 0) state = states.length -1;
+            handleStateChange();
+        }
+    }
+    
+    private void handleStateChange() {
+        if (stateChangeHandler != null) stateChangeHandler.accept(state);
+    }
+    
+    public int getState() {
+        return state;
+    }
+    
+}