# -*- coding: utf-8 -*-

require 'gtk3'
require 'mui/gtk_extension'

class Gtk::InnerUserList < Gtk::TreeView
  include Gtk::TreeViewPrettyScroll
  COL_ICON = 0
  COL_SCREEN_NAME = 1
  COL_NAME = 2
  COL_USER = 3
  COL_ORDER = 4

  def initialize(userlist)
    @userlist = userlist
    super(::Gtk::ListStore.new(GdkPixbuf::Pixbuf, String, String, Object, Integer))
    append_column ::Gtk::TreeViewColumn.new("", ::Gtk::CellRendererPixbuf.new, pixbuf: COL_ICON)
    append_column ::Gtk::TreeViewColumn.new("SN", ::Gtk::CellRendererText.new, text: COL_SCREEN_NAME)
    append_column ::Gtk::TreeViewColumn.new("名前", ::Gtk::CellRendererText.new, text: COL_NAME)
    model.set_sort_column_id(COL_ORDER, Gtk::SortType::DESCENDING)
  end

  # Userの配列 _users_ を追加する
  # ==== Args
  # [users] Enumerable ユーザを繰り返すEnumerable
  # ==== Return
  # self
  def add_user(users)
    exist_users = Set.new(model.to_enum.map{ |model,path,iter| iter[COL_USER] })
    users.select{|user|
      user.is_a?(Diva::Model)
    }.reject{|user|
      exist_users.include?(user)
    }.deach{|user|
      break if destroyed?
      iter = model.append
      # ここではCOL_ICONを埋めず、nilのままにしてアイコンを表示しない。
      # アイコンは Gtk::UserList#emit_expose_user で、カラムが表示された時に初めて埋める
      iter[COL_SCREEN_NAME] = user[:idname]
      iter[COL_NAME] = user[:name]
      iter[COL_USER] = user
      iter[COL_ORDER] = @userlist.gen_order(user)
    }.terminate
    scroll_to_zero_lator! if realized? and vadjustment.value == 0.0
    self end

  # Userの配列 _users_ に含まれるユーザを削除する
  # ==== Args
  # [users] ユーザの配列
  # ==== Return
  # self
  def remove_user(users)
    Enumerator.new(model).each{ |model,path,iter|
      if users.include?(iter[COL_USER])
         model.remove(iter) end }
    self end

  # ユーザ user の順番を再計算する
  # ==== Args
  # [user] ユーザ
  # ==== Return
  # self
  def reorder(user)
    each{ |m, p, iter|
      if iter[COL_USER] == user
        iter[COL_ORDER] = @userlist.gen_order(user)
        return self end }
    self end
end