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Versions: 12
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Stored size: 1.89 KB
Contents
module Chanko
class ActiveIf
class NoConditionFound < StandardError
end
class << self
def define(label, &block)
definitions[label] = block
end
def find(label)
definitions[label]
end
def definitions
@definitions ||= {}
end
def clear
definitions.clear
end
end
attr_reader :conditions
def options # remains just for backward compatibility
warn "ActiveIf#options is deprecated and is never used at #{caller[0]}"
@options
end
def initialize(*conditions, &block)
@options = conditions.extract_options!
unless @options.empty?
warn "options in ActiveIf#new are deprecated and are never used at #{caller[0]}"
end
@conditions = conditions
@block = block
end
def active?(context, options = {})
blocks.all? {|block| block.call(context, options) }
end
def blocks
@blocks ||= begin
conditions.map do |condition|
Block.new(condition)
end << @block
end.compact
end
class Block
def initialize(*conditions)
@conditions = conditions
end
def call(context, options)
block.call(context, options)
end
def block
condition = @conditions.first
if condition.kind_of?(Block)
condition
else
ActiveIf.find(condition) or raise NoConditionFound, condition
end
end
end
class Any < Block
def block
proc do |context, options|
@conditions.any? do |condition|
Block.new(condition).call(context, options)
end
end
end
end
class None < Block
def block
proc do |context, options|
@conditions.none? do |condition|
Block.new(condition).call(context, options)
end
end
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems