de.placeblock.betterinventories.gui.GUIView Maven / Gradle / Ivy

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Easy to use and extensive InventoryAPI for Spigot

There is a newer version: 2.2.0

package de.placeblock.betterinventories.gui;

import lombok.Getter;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;

import java.util.List;

/**
 * A GUIView is created for each player who opens an inventory.
 */
@Getter
public class GUIView {
    /**
     * The Player of this View
     */
    private final Player player;

    /**
     * The Bukkit Inventory of this View
     */
    private final Inventory inventory;

    /**
     * Creates a new GUIView
     * @param player The Player of this View
     * @param inventory The Bukkit Inventory of this View
     */
    public GUIView(Player player, Inventory inventory) {
        this.player = player;
        this.inventory = inventory;
        this.player.openInventory(inventory);
    }

    /**
     * Gets called when the new rendered content should be showed to the player.
     * Updates only changing items in the player's inventory.
     * @param content The new rendered content. The size of the list should be equals the slots in the inventory.
     */
    public void update(List content) {
        ItemStack[] contents = this.inventory.getContents();
        for (int i = 0; i < contents.length && i < content.size(); i++) {
            ItemStack newItem = content.get(i);
            ItemStack oldItem = contents[i];
            if (newItem == null || !newItem.equals(oldItem)) {
                this.inventory.setItem(i, newItem);
            }
        }
    }

}