| 20 | Defines the behavior and attributes of all menus in our plugin |
| 21 | */ |
| 22 | public abstract class Menu implements InventoryHolder { |
| 23 | |
| 24 | //Protected values that can be accessed in the menus |
| 25 | protected PlayerMenuUtility playerMenuUtility; |
| 26 | protected Player player; |
| 27 | protected Inventory inventory; |
| 28 | protected ItemStack FILLER_GLASS = makeItem(Material.GRAY_STAINED_GLASS_PANE, " "); |
| 29 | |
| 30 | //Constructor for Menu. Pass in a PlayerMenuUtility so that |
| 31 | // we have information on whose menu this is and |
| 32 | // what info is to be transferred |
| 33 | public Menu(PlayerMenuUtility playerMenuUtility) { |
| 34 | this.playerMenuUtility = playerMenuUtility; |
| 35 | this.player = playerMenuUtility.getOwner(); |
| 36 | } |
| 37 | |
| 38 | //let each menu decide their name |
| 39 | public abstract String getMenuName(); |
| 40 | |
| 41 | //let each menu decide their slot amount |
| 42 | public abstract int getSlots(); |
| 43 | |
| 44 | public abstract boolean cancelAllClicks(); |
| 45 | |
| 46 | //let each menu decide how the items in the menu will be handled when clicked |
| 47 | public abstract void handleMenu(InventoryClickEvent e) throws MenuManagerNotSetupException, MenuManagerException; |
| 48 | |
| 49 | //let each menu decide what items are to be placed in the inventory menu |
| 50 | public abstract void setMenuItems(); |
| 51 | |
| 52 | //When called, an inventory is created and opened for the player |
| 53 | public void open() { |
| 54 | //The owner of the inventory created is the Menu itself, |
| 55 | // so we are able to reverse engineer the Menu object from the |
| 56 | // inventoryHolder in the MenuListener class when handling clicks |
| 57 | inventory = Bukkit.createInventory(this, getSlots(), getMenuName()); |
| 58 | |
| 59 | //grab all the items specified to be used for this menu and add to inventory |
| 60 | this.setMenuItems(); |
| 61 | |
| 62 | //open the inventory for the player |
| 63 | playerMenuUtility.getOwner().openInventory(inventory); |
| 64 | playerMenuUtility.pushMenu(this); |
| 65 | } |
| 66 | |
| 67 | public void back() throws MenuManagerException, MenuManagerNotSetupException { |
| 68 | MenuManager.openMenu(playerMenuUtility.lastMenu().getClass(), playerMenuUtility.getOwner()); |
| 69 | } |
| 70 | |
| 71 | protected void reloadItems() { |
| 72 | for (int i = 0; i < inventory.getSize(); i++) { |
| 73 | inventory.setItem(i, null); |
| 74 | } |
| 75 | setMenuItems(); |
| 76 | } |
| 77 | |
| 78 | protected void reload() throws MenuManagerException, MenuManagerNotSetupException { |
| 79 | player.closeInventory(); |