cRmGSS - Scene File Confirmation

#==============================================================================
# ** SceneFile_Confirmation
#------------------------------------------------------------------------------
# Author: JohnBolton
# www.centrorpgmaker.com
#==============================================================================
# Adds a confirnation window on Scene_File, whose options are:
#
# - Save/Load/Rewrite
# - Delete
# - Cancel
#
#==============================================================================

module Bolton92
  module Save_load_delete_confirmation
    Options = {

  #--------------------------------------------------------------------------
  # * Settings
  #--------------------------------------------------------------------------

    "Option1_tosave" => "Save",

    "Option1_torewrite" => "Rewrite",

    "Option1_toload" => "Load",

    "Option2" => "Delete",

    "Option3" => "Cancel"

    }

    Width_Window = 160

  end
end

#----------------------------------------------------------------------------
# ** Game_System
#----------------------------------------------------------------------------
#============================================================================

class Game_System
  #--------------------------------------------------------------------------
  # * Instance Variables‎
  #--------------------------------------------------------------------------
  attr_accessor :delete_enabled
  attr_accessor :index_save_confirmation
  #--------------------------------------------------------------------------
  # * Modification of the initialize method
  #--------------------------------------------------------------------------
  alias bolton92_system_initialize initialize
  def initialize
    bolton92_system_initialize
    @delete_enabled = 1
    @index_save_confirmation = 1
  end
end

#----------------------------------------------------------------------------
# ** Window_Confirmation
#----------------------------------------------------------------------------
#============================================================================

class Window_Confirmation < Window_Command
  include Bolton92::Save_load_delete_confirmation
  #--------------------------------------------------------------------------
  # * Starting the process
  #--------------------------------------------------------------------------
  def initialize
    super(0, 0)
    update_placement
    self.openness = 0
    open
  end
  #--------------------------------------------------------------------------
  # * Acquisition of the window width
  #--------------------------------------------------------------------------
  def window_width
    return Width_Window
  end
  #--------------------------------------------------------------------------
  #     x : coordinate X
  #     y : coordinate Y
  #--------------------------------------------------------------------------
  def update_placement
    self.x = (Graphics.width - width) / 2
    self.y = (Graphics.height - height) / 2
  end
  #--------------------------------------------------------------------------
  # * Creating the list of commands
  #--------------------------------------------------------------------------
  def make_command_list
    if $game_system.delete_enabled and $game_system.index_save_confirmation
      add_command(Options["Option1_torewrite"], :confirm)
    elsif $game_system.delete_enabled == false and $game_system.index_save_confirmation
      add_command(Options["Option1_tosave"], :confirm)
    elsif $game_system.index_save_confirmation == false
      add_command(Options["Option1_toload"], :confirm, $game_system.delete_enabled)
    end
    add_command(Options["Option2"], :delete, $game_system.delete_enabled)
    add_command(Options["Option3"], :cancel)
  end
end

#==============================================================================
# ** Scene_File
#------------------------------------------------------------------------------
#==============================================================================

class Scene_File
  #--------------------------------------------------------------------------
  # * Modification of the start method
  #--------------------------------------------------------------------------
  alias bolton92_start start
  def start
    bolton92_start
    create_window_confirmation
    check_scene
  end
  #--------------------------------------------------------------------------
  # * Check Scene
  #--------------------------------------------------------------------------
  def check_scene
    if self.to_s.include?("Scene_Load")
      $game_system.index_save_confirmation = false
    else
      $game_system.index_save_confirmation = true
    end
  end
  #--------------------------------------------------------------------------
  # * Modification of the update method
  #--------------------------------------------------------------------------
  alias bolton92_update update
  def update
    check_delete
    bolton92_update
  end
  #--------------------------------------------------------------------------
  # * Check delete
  #--------------------------------------------------------------------------
  def check_delete
    index = sprintf("Save%02d.rvdata2", @index + 1)
    if File.exist?(index.to_s)
      $game_system.delete_enabled = true
    else
      $game_system.delete_enabled = false
    end
  end
  #--------------------------------------------------------------------------
  # * Update the selection of the selected files
  #--------------------------------------------------------------------------
  def update_savefile_selection
    unless @window_confirmation.active
      if Input.trigger?(:C)
        active_window_confirmation
      elsif Input.trigger?(:B)
        Sound.play_cancel
        return_scene
      end
      return update_cursor
    end
  end
  #--------------------------------------------------------------------------
  # * Declaration of Window_Confirmation
  #--------------------------------------------------------------------------
  def create_window_confirmation
    @window_confirmation = Window_Confirmation.new
    @window_confirmation.set_handler(:confirm, method(:on_savefile_ok))
    @window_confirmation.set_handler(:delete, method(:delete))
    @window_confirmation.set_handler(:cancel, method(:on_savefile_cancel))
    restore_savefile_window
  end
  #--------------------------------------------------------------------------
  # * Cancel
  #--------------------------------------------------------------------------
  def on_savefile_cancel
    restore_savefile_window
  end
  #--------------------------------------------------------------------------
  # * Delete
  #--------------------------------------------------------------------------
  def delete
    if DataManager.delete_save_file(@index)
      restore_savefile_window
    end
  end
  #--------------------------------------------------------------------------
  # * Activation of Window_Confirmation
  #--------------------------------------------------------------------------
  def active_window_confirmation
    Sound.play_ok
    create_window_confirmation
    @window_confirmation.active = true
    @window_confirmation.visible = true
    @window_confirmation.select_symbol(:confirm)
    @savefile_windows[@index].active = false
    @window_confirmation.refresh
  end
  #--------------------------------------------------------------------------
  # * Activation of the file list
  #--------------------------------------------------------------------------
  def restore_savefile_window
    @window_confirmation.active = false
    @window_confirmation.visible = false
    @savefile_windows[@index].active = true
    @savefile_windows[@index].refresh
  end
end