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Contents
# encoding: utf-8
require_relative 'paginator'
module TTY
class Prompt
class EnumPaginator < Paginator
# Paginate list of choices based on current active choice.
# Move entire pages.
#
# @api public
def paginate(list, active, per_page = nil, &block)
default_size = (list.size <= DEFAULT_PAGE_SIZE ? list.size : DEFAULT_PAGE_SIZE)
@per_page = @per_page || per_page || default_size
# Don't paginate short lists
if list.size <= @per_page
@lower_index = 0
@upper_index = list.size - 1
if block
return list.each_with_index(&block)
else
return list.each_with_index.to_enum
end
end
unless active.nil? # User may input index out of range
@last_index = active
end
page = (@last_index / @per_page.to_f).ceil
pages = (list.size / @per_page.to_f).ceil
if page == 0
@lower_index = 0
@upper_index = @lower_index + @per_page - 1
elsif page > 0 && page <= pages
@lower_index = (page - 1) * @per_page
@upper_index = @lower_index + @per_page - 1
else
@upper_index = list.size - 1
@lower_index = @upper_index - @per_page + 1
end
sliced_list = list[@lower_index..@upper_index]
indices = (@lower_index..@upper_index)
if block
sliced_list.each_with_index do |item, index|
block[item, @lower_index + index]
end
else
sliced_list.zip(indices).to_enum unless block_given?
end
end
end # EnumPaginator
end # Prompt
end # TTY
Version data entries
6 entries across 6 versions & 2 rubygems