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Versions: 48
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Stored size: 1.36 KB
Contents
module FlydataCore
module Event
class EventHandlerBase
EVENT_VERB_ANY = "__ANY__"
DEFAULT_ORDER = 500
@@handlers_hash = {}
def self.handle(event)
raise "handle method not implemented"
end
protected
def self.register_handler(opts)
@noun = opts[:noun]
@verb = opts[:verb] || EVENT_VERB_ANY
@execution_order = opts[:execution_order] || DEFAULT_ORDER
handlers = @@handlers_hash[self.key] ||= []
insert_handler(handlers, self)
end
private
def self.handlers(noun, verb)
handlers = (@@handlers_hash[key(noun, verb)] || []).clone
any_handlers = @@handlers_hash[key(noun,EVENT_VERB_ANY)]
if any_handlers
any_handlers.each { |any_handler| self.insert_handler(handlers,any_handler) }
end
handlers
end
def self.key(noun = nil, verb = nil)
noun ||= @noun
verb ||= @verb
"#{noun}_#{verb}"
end
def self.insert_handler(handlers, handler)
handlers.each_with_index do |h, i|
if handler.execution_order < h.execution_order
handlers.insert(i, handler)
handler = nil
break
end
end
handlers << handler if handler
end
def self.execution_order
@execution_order
end
end
end
end
Version data entries
48 entries across 48 versions & 1 rubygems