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Contents
module Vedeu
module Buffers
# Provides a grid of Vedeu::Models::Cell objects at the given
# height and width.
#
# @api private
class Empty
# @!attribute [r] name
# @return [NilClass|String|Symbol]
attr_reader :name
# Returns a new instance of Vedeu::Buffers::Empty.
#
# @note
# If a particular key is missing from the attributes
# parameter, then it is added with the respective value from
# #defaults.
#
# @param attributes [Hash<Symbol => Fixnum, NilClass, String,
# Symbol]
# @option attributes name [NilClass|String|Symbol]
# @option attributes height [Fixnum]
# @option attributes width [Fixnum]
# @return [Vedeu::Buffers::Empty]
def initialize(attributes = {})
defaults.merge!(attributes).each do |key, value|
instance_variable_set("@#{key}", value || defaults.fetch(key))
end
end
# @return [Array<Array<Vedeu::Models::Cell>>]
def buffer
Array.new(width) do |y|
Array.new(height) do |x|
Vedeu::Models::Cell.new(name: name, position: [y, x])
end
end
end
# @note
# We add 1 to both the width and height as terminal screens
# are 1-indexed.
#
# @return [Fixnum]
def height
@height + 1
end
# @note
# We add 1 to both the width and height as terminal screens
# are 1-indexed.
#
# @return [Fixnum]
def width
@width + 1
end
private
# Returns the default options/attributes for this class.
#
# @return [Hash<Symbol => void>]
def defaults
{
height: Vedeu.height,
name: nil,
width: Vedeu.width,
}
end
end # Empty
end # Buffers
end # Vedeu
Version data entries
6 entries across 6 versions & 1 rubygems