Class: DataList

Inherits:
Object
  • Object
show all
Defined in:
lib/repositories/containers/data_list.rb

Direct Known Subclasses

DataListStudentShort

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(objects) ⇒ DataList

Конструктор, принимает массив любых объектов



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# File 'lib/repositories/containers/data_list.rb', line 12

def initialize(objects)
  self.objects = objects
  @listeners = []
end

Instance Attribute Details

#objects=(value) ⇒ Object

Sets the attribute objects

Parameters:

  • value —

    the value to set the attribute objects to.



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# File 'lib/repositories/containers/data_list.rb', line 9

def objects=(value)
  @objects = value
end

Instance Method Details

#add_listener(listener) ⇒ Object 



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# File 'lib/repositories/containers/data_list.rb', line 17

def add_listener(listener)
  @listeners << listener
end

#data_table ⇒ Object

Получить DataTable со всеми элементами.



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# File 'lib/repositories/containers/data_list.rb', line 39

def data_table
  result = []
  counter = 0
  objects.each do |obj|
    row = []
    row << counter
    row.push(*table_fields(obj))
    result << row
    counter += 1
  end
  DataTable.new(result)
end

#notify ⇒ Object 



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# File 'lib/repositories/containers/data_list.rb', line 25

def notify
  @listeners.each { |lst| lst.on_datalist_changed(data_table) }
end

#remove_listener(listener) ⇒ Object 



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# File 'lib/repositories/containers/data_list.rb', line 21

def remove_listener(listener)
  @listeners.delete(listener)
end

#replace_objects(objects) ⇒ Object

Добавить элементы в конец списка



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# File 'lib/repositories/containers/data_list.rb', line 53

def replace_objects(objects)
  self.objects = objects.dup
  notify
end

#select_element(number) ⇒ Object

Выбрать элемент по номеру



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# File 'lib/repositories/containers/data_list.rb', line 30

def select_element(number)
  self.selected_num = number < objects.size ? number : nil
end

#selected_id ⇒ Object 



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# File 'lib/repositories/containers/data_list.rb', line 34

def selected_id
  objects[selected_num].id
end