Non-Combat Menu Addon- Single Item Tab v1.0

#-------------------------------------------------------------------------------
# Non-Combat Menu Addon
#-- Single Item Tab v1.0
#-- By mjshi
#-------------------------------------------------------------------------------
# Installation: Put below the Non-Combat Menu.
#-------------------------------------------------------------------------------

class Window_ItemList
  def initialize(x, y, width, height)
    super
    @category = :item if NonCombatMenu::SHOW_CONSUMABLES
    @category = :key_item if NonCombatMenu::SHOW_KEY_ITEMS
    @category = :weapon if NonCombatMenu::SHOW_WEAPONS
    @category = :armor if NonCombatMenu::SHOW_ARMORS
    @data = []
    self.activate
    select(0)
  end

  def category=(category)
    @category = :item if NonCombatMenu::SHOW_CONSUMABLES
    @category = :key_item if NonCombatMenu::SHOW_KEY_ITEMS
    @category = :weapon if NonCombatMenu::SHOW_WEAPONS
    @category = :armor if NonCombatMenu::SHOW_ARMORS
    refresh
    self.oy = 0
  end
end

class Window_ItemCategory
  def initialize
    super(0, 0)
    self.unselect
    self.deactivate
  end
end

class Scene_Item
  alias old_create_item_window create_item_window
  def create_item_window
    old_create_item_window
    @item_window.set_handler(:cancel, method(:return_scene))
    @item_window.update_help if @item_window.y != 0
  end
end