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First parts of displaying a GUI

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This commit is contained in:
SemvdH
2026-02-03 14:13:24 +01:00
parent e1527dad4c
commit 98fe1a696a
6 changed files with 94 additions and 127 deletions
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29
ic_plugin_core/src/main/java/nl/interestingcorner/core/gui/ChestGUI.java
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@@ -1,29 +0,0 @@
package nl.interestingcorner.core.gui;
import java.util.List;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
/**
* Generalized chest GUI for use in plugins.
*/
public class ChestGUI {
public static void open(Player player, String title, List<ItemStack> items) {
int itemsAmount = items.size();
int size;
if (itemsAmount <= 9) {
size = 9;
} else {
// TODO: handle pagination for >54 items
size = ((itemsAmount / 9) + 1) * 9;
}
Inventory gui = Bukkit.createInventory(null, size, title);
for (ItemStack item : items) {
gui.addItem(item);
}
player.openInventory(gui);
}
}

27
ic_plugin_core/src/main/java/nl/interestingcorner/core/gui/ChestGUIListener.java
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@@ -1,27 +0,0 @@
package nl.interestingcorner.core.gui;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
/**
* Generalized listener for chest GUIs. Extend or register with custom logic.
*/
public class ChestGUIListener implements Listener {
private final String guiTitle;
public ChestGUIListener(String guiTitle) {
this.guiTitle = guiTitle;
}
@EventHandler
public void onInventoryClick(InventoryClickEvent event) {
if (event.getView().getTitle().equals(guiTitle)) {
event.setCancelled(true);
if (event.getCurrentItem() == null) return;
Player player = (Player) event.getWhoClicked();
// Extend this class and override this method for custom slot handling
}
}
}

45
ic_plugin_core/src/main/java/nl/interestingcorner/core/gui/GUI.java
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@@ -13,13 +13,58 @@ public class GUI implements InventoryHolder {
public static final int MAX_INVENTORY_SIZE = 54; // max size of inventory before pages are needed
public static final int DEFAULT_PAGE_SIZE = 45; // default items per page (excluding navigation row)
/**
* TODO add listener functionality for clicking on an item, something like
*
*
public interface GUIListener {
void onItemClick(Player player, GUI gui, ItemStack item, int slot);
}
private GUIListener listener;
public void setListener(GUIListener listener) {
this.listener = listener;
}
public GUIListener getListener() {
return listener;
}
@EventHandler
public void onInventoryClick(InventoryClickEvent event) {
if (event.getInventory().getHolder() instanceof GUI gui) {
if (gui.getListener() != null) {
gui.getListener().onItemClick((Player) event.getWhoClicked(), gui, event.getCurrentItem(), event.getSlot());
}
}
}
*/
/**
* Inventory that will be displayed
*/
private Inventory inventory;
/**
* Full list of items that the GUI holds
*/
private List<ItemStack> items;
/**
* Current page being displayed
*/
private int currentPage;
/**
* Title of the GUI
*/
private String title;
/**
* Number of items per page
*/
private int pageSize;
public GUI(String title, int pageSize) {

39
ic_plugin_core/src/main/java/nl/interestingcorner/core/gui/GUIBuilder.java
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@@ -1,39 +0,0 @@
package nl.interestingcorner.core.gui;
import java.util.List;
import org.bukkit.Bukkit;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
public class GUIBuilder {
public Inventory buildInventory(List<ItemStack> items) {
/**
* if more than 45, add pages. Split by 45 items per page.
* use bottom row leftmost and rightmost item for navigation.
* use paper item for page number display in middle.
* use lore of navigation items clicked to handle showing next/previous page.
* use player.getOpeninventory() to get current inventory and update or close
* it.
*/
int itemsAmount = items.size();
int pagesAmount = getPagesAmount(itemsAmount);
Inventory gui = Bukkit.createInventory(null, GUI.MAX_INVENTORY_SIZE, "Coordinates Menu");
for (ItemStack item : items) {
gui.addItem(item);
}
return gui;
}
private static int getPagesAmount(int itemsAmount) {
if (itemsAmount > GUI.MAX_INVENTORY_SIZE) {
return ((itemsAmount / GUI.DEFAULT_PAGE_SIZE) + 1);
}
return 1;
}
}