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# frozen_string_literal: true
module Vedeu
module Editor
# Manipulate a single line of an Vedeu::Editor::Document.
#
# @api private
#
class Line
include Vedeu::Editor::Collection
# @!attribute [rw] collection
# @return [String]
attr_accessor :collection
alias line collection
alias to_s collection
class << self
extend Forwardable
def_delegators Vedeu::Coercers::EditorLine,
:coerce
end # Eigenclass
# Returns a new instance of Vedeu::Editor::Line.
#
# @param collection [String|NilClass]
# @return [Vedeu::Editor::Line]
def initialize(collection = nil)
@collection = collection || ''
end
# Return the character at the given index.
#
# @param index [Fixnum|NilClass]
# @return [String|NilClass]
def character(index = nil)
return '' if collection && collection.empty?
return collection[-1] unless index
by_index(index)
end
# Delete the character from the line positioned at the given
# index.
#
# @param index [Fixnum|NilClass]
# @return [String]
def delete_character(index = nil)
Vedeu::Editor::Line.coerce(Vedeu::Editor::Delete
.from(line, index, size))
end
# Insert the character on the line positioned at the given
# index.
#
# @param character [String]
# @param index [Fixnum|NilClass]
# @return [Vedeu::Editor::Line]
def insert_character(character, index = nil)
return self unless character
Vedeu::Editor::Line.coerce(Vedeu::Editor::Insert
.into(collection, character, index, size))
end
end # Line
end # Editor
end # Vedeu
Version data entries
22 entries across 22 versions & 1 rubygems