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Contents
module Bulldog
#
# An ordered set of Styles.
#
# Lookup is by style name.
#
class StyleSet
#
# Create a StyleSet containing the given styles.
#
def initialize(styles=[])
@styles = styles.to_a
end
#
# Initialize a StyleSet from another.
#
def initialize_copy(other)
super
@styles = @styles.clone
end
#
# Create a StyleSet containing the given styles.
#
def self.[](*styles)
new(styles)
end
#
# Return the style with the given name.
#
def [](arg)
if arg.is_a?(Symbol)
if arg == :original
Style::ORIGINAL
else
@styles.find{|style| style.name == arg}
end
else
@styles[arg]
end
end
#
# Add the given style to the set.
#
def <<(style)
@styles << style
end
#
# Return true if the given object has the same styles as this one.
#
# The argument must have #to_a defined. Style comparison is done
# by name only.
#
def ==(other)
other.to_a == @styles
end
#
# Return the list of styles as an Array.
#
def to_a
@styles.dup
end
#
# Return the number of styles in the set.
#
# The :original style is not taken into account.
#
delegate :length, :to => :@styles
alias size length
#
# Return true if there are no styles in the set, false otherwise.
#
# The :original style is not taken into account.
#
delegate :empty?, :to => :@styles
#
# Clear all styles out of the style set.
#
# The original style will still be retrievable.
#
delegate :clear, :to => :@styles
#
# Return the style with the given names.
#
def slice(*names)
styles = names.map{|name| self[name]}
StyleSet[*styles]
end
#
# Yield each style.
#
# The :original style is not included.
#
delegate :each, :to => :@styles
include Enumerable
end
end
Version data entries
21 entries across 21 versions & 1 rubygems