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Contents
module SmartProperties
class PropertyCollection
include Enumerable
attr_reader :parent
def self.for(scope)
parent = scope.ancestors[1..-1].find do |ancestor|
ancestor.ancestors.include?(SmartProperties) &&
ancestor != scope &&
ancestor != SmartProperties
end
if parent.nil?
new
else
parent.properties.register(collection = new)
collection
end
end
def initialize
@collection = {}
@collection_with_parent_collection = {}
@children = []
end
def []=(name, value)
name = name.to_s
collection[name] = value
collection_with_parent_collection[name] = value
notify_children
value
end
def [](name)
collection_with_parent_collection[name.to_s]
end
def key?(name)
collection_with_parent_collection.key?(name.to_s)
end
def keys
collection_with_parent_collection.keys.map(&:to_sym)
end
def values
collection_with_parent_collection.values
end
def each(&block)
return to_enum(:each) if block.nil?
collection_with_parent_collection.each { |name, value| block.call([name.to_sym, value]) }
end
def to_hash
Hash[each.to_a]
end
def register(child)
children.push(child)
child.refresh(collection_with_parent_collection)
nil
end
protected
attr_accessor :children
attr_accessor :collection
attr_accessor :collection_with_parent_collection
def notify_children
@children.each { |child| child.refresh(collection_with_parent_collection) }
end
def refresh(parent_collection)
@collection_with_parent_collection = parent_collection.merge(collection)
notify_children
nil
end
end
end
Version data entries
99 entries across 99 versions & 2 rubygems