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module Kz
module SidebarFactory
@@entries = nil
module_function
def entries
Kz.barrier([]) do
if @@entries.nil?
load_sidebars
@@entries = {}
ObjectSpace.each_object(Class) do |klass|
if klass.respond_to?(:sidebar_entry?) and klass.sidebar_entry? and
klass.respond_to?(:priority_hint) and
klass.respond_to?(:label) and
klass.respond_to?(:icon) and
klass.respond_to?(:create)
@@entries[klass.label] = klass
end
end
end
@@entries.collect do |key, entry|
[entry.priority_hint, entry.label, entry.icon]
end
end
end
def create(label, sidebar)
Kz.barrier do
return nil unless @@entries.has_key?(label)
entry = @@entries[label]
entry.create(sidebar)
end
end
def load_sidebars
search_dirs.each do |dir|
next unless File.exist?(dir)
Dir[File.join(dir, "*.rb")].each do |sidebar|
Kz.barrier do
require sidebar.sub(/\.rb/, '')
end
end
end
end
def search_dirs
dirs = $LOAD_PATH.collect do |path|
File.join(File.expand_path(path), "kz", "sidebars")
end
dirs.unshift(Kz::SIDEBARS_DIR)
dirs
end
end
end
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