change how time is stored

It now use a id instead of the class, to remove inconsistency and also not store the menu button in more places than it needs to.

src/main/java/org/brokenarrow/menu/library/CreateMenus.java

@@ -61,7 +61,7 @@ public CreateMenus(final @Nullable List<Integer> fillSlots, @Nullable final List
 	private final List<MenuButton> buttons = new ArrayList<>();
 	private final List<MenuButton> buttonsToUpdate = new ArrayList<>();
 	private final Map<Integer, Map<Integer, MenuData>> addedButtons = new HashMap<>();
-	private final Map<MenuButton, Long> timeWhenUpdatesButtons = new HashMap<>();
+	private final Map<Integer, Long> timeWhenUpdatesButtons = new HashMap<>();
 
 	protected List<Integer> fillSpace;
 	private final List<?> listOfFillItems;
@@ -164,14 +164,13 @@ public InventoryType getInventoryType() {
 	}
 
 	@Nonnull
-	protected Map<MenuButton, Long> getTimeWhenUpdatesButtons() {
+	protected Map<Integer, Long> getTimeWhenUpdatesButtons() {
 		return timeWhenUpdatesButtons;
 	}
 
 	@Nullable
 	protected Long getTimeWhenUpdatesButton(MenuButton menuButton) {
-		System.out.println("menuButton " + menuButton.getId());
-		return getTimeWhenUpdatesButtons().getOrDefault(menuButton, null);
+		return getTimeWhenUpdatesButtons().getOrDefault(menuButton.getId(), null);
 	}
 
 	/**
@@ -525,7 +524,7 @@ protected void putAddedButtonsCache(Integer pageNumber, Map<Integer, MenuData> m
 	}
 
 	protected void putTimeWhenUpdatesButtons(MenuButton menuButton, Long time) {
-		this.getTimeWhenUpdatesButtons().put(menuButton, time);
+		this.getTimeWhenUpdatesButtons().put(menuButton.getId(), time);
 	}
 
 	protected void changePage(final boolean nextPage) {
@@ -786,6 +785,7 @@ private Map<Integer, MenuData> cacheMenuData(final int pageNumber) {
 			}
 			final MenuButton menuButton = getMenuButtonAtSlot(slot, slotIndexOld, objectFromlistOfFillItems);
 			final ItemStack result = getItemAtSlot(menuButton, slot, slotIndexOld, objectFromlistOfFillItems);
+
 			if (menuButton != null) {
 				if (menuButton.shouldUpdateButtons())
 					this.buttonsToUpdate.add(menuButton);

src/main/java/org/brokenarrow/menu/library/MenuButton.java

@@ -8,6 +8,13 @@
 
 public abstract class MenuButton {
 
+	private static int counter = 0;
+	private final int id;
+
+	public MenuButton() {
+		this.id = counter++;
+	}
+
 	/**
 	 * when you click inside the menu.
 	 *
@@ -52,21 +59,33 @@ public ItemStack getItem(int slot, @Nullable Object object) {
 	}
 
 	/**
-	 * Set own time it shall update buttons in seconds.
+	 * Set your own time, if and when it shall update buttons. If this is set to -1
+	 * It will use the global from {@link CreateMenus#getUpdateTime()}
+	 * <p>
+	 * You also need set this to true {@link #shouldUpdateButtons()}
 	 *
-	 * @return seconds.
+	 * @return -1 or seconds between updates.
 	 */
-	public long updateTime() {
+	public long setUpdateTime() {
 		return -1;
 	}
 
 	/**
-	 * Set this to true if you want to update buttons.
+	 * Returns true if the buttons should be updated, when menu is open and no buttons are pushed. By default, this method
+	 * returns false. If you want to update the buttons, override this method and return true in your implementation.
 	 *
-	 * @return true if it shall update button.
+	 * @return true if the buttons should be updated, false otherwise.
 	 */
-	public boolean updateButton() {
+	public boolean shouldUpdateButtons() {
 		return false;
 	}
 
+	/**
+	 * The unique id for this instance.
+	 *
+	 * @return the id for this instance.
+	 */
+	public int getId() {
+		return id;
+	}
 }