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module Sass::Tree
# A static node representing a `@supports` rule.
#
# @see Sass::Tree
class SupportsNode < DirectiveNode
# The name, which may include a browser prefix.
#
# @return [String]
attr_accessor :name
# The supports condition.
#
# @return [Sass::Supports::Condition]
attr_accessor :condition
# @param condition [Sass::Supports::Condition] See \{#condition}
def initialize(name, condition)
@name = name
@condition = condition
super('')
end
# @see DirectiveNode#value
def value; raise NotImplementedError; end
# @see DirectiveNode#resolved_value
def resolved_value
@resolved_value ||= "@#{name} #{condition.to_css}"
end
# True when the directive has no visible children.
#
# @return [Boolean]
def invisible?
children.all? {|c| c.invisible?}
end
end
end
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