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Contents
module Locomotive
module Plugin
# Tracks classes which include the Locomotive::Plugin module. Also allows
# external classes to provide a tracker. A tracker is a block which will be
# called when a class includes Locomotive::Plugin. The class object will be
# handed into the block as a parameter.
module ClassTracker
# Set up class tracking on the module which has included this module.
# This will set up the following methods:
#
# [plugin_classes] Returns the set of plugin classes which have
# included Locomotive::Plugin
#
# [track_plugin_class] Keeps track of the plugin class which has been
# added. Also calls all plugin trackers
#
# [add_plugin_class_tracker] Add a block which is called when a plugin
# class is tracked. The block will be given
# the class to be tracked
#
# @param mod the module to add the tracking to
def self.included(mod)
mod.instance_eval do
@plugin_classes = Set.new
@trackers = []
class << self
attr_reader :plugin_classes
end
def track_plugin_class(klass)
@plugin_classes << klass
_call_trackers(klass)
end
def add_plugin_class_tracker(&block)
@trackers << block
end
private
def _call_trackers(klass)
@trackers.each do |tracker|
tracker.call(klass)
end
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems