lib/vedeu/views/lines.rb
# frozen_string_literal: true
module Vedeu
module Views
# A collection of {Vedeu::Views::Line} instances.
#
# @api private
#
class Lines < Vedeu::Repositories::Collection
class << self
include Vedeu::Common
# @param (see Vedeu::Repositories::Collection#initialize)
# @macro raise_invalid_syntax
# @return [Vedeu::Views::Lines]
def coerce(collection = [], parent = nil, name = nil)
if collection.is_a?(Vedeu::Views::Lines)
collection
elsif collection.is_a?(Vedeu::Views::Streams)
if collection.empty?
# @todo Investigate whether this is being used.
end
elsif array?(collection)
return new(collection, parent, name) if collection.empty?
coerced_collection = []
collection.each do |element|
coerced_collection << element if element.is_a?(Vedeu::Views::Line)
end
new(coerced_collection, parent, name)
elsif collection.is_a?(Vedeu::Views::Line)
new([collection], parent, name)
else
raise Vedeu::Error::InvalidSyntax,
'Cannot coerce for Vedeu::View::Lines, as collection ' \
'unrecognised.'
end
end
end # Eigenclass
alias lines value
end # Lines
end # Views
end # Vedeu