Class: Uttk::Filters::Filter

Inherits:
Logger::Backend show all
Includes:
Abstract, Observable
Defined in:
lib/uttk/filters/Filter.rb

Overview

FIXME: document me

Direct Known Subclasses

Buffer, Id, Saver, PathFilters::PathFilter

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Logger::Backend

#update

Constructor Details

#initialize(observers = [], options = nil) ⇒ Filter

Returns a new instance of Filter.



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# File 'lib/uttk/filters/Filter.rb', line 22

def initialize ( observers=[], options=nil )
  @options = default_options.merge(options || {})
  observers.each do |obs|
    raise ObserverError, obs unless obs.respond_to? :update
    add_observer(obs)
  end
  super()
end

Class Method Details

.composition(*desc) ⇒ Object 



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# File 'lib/uttk/filters/Filter.rb', line 36

def self.composition ( *desc )
  class_eval do
    @@desc = desc
    def initialize ( *a, &b )
      super()
      Filters[*@@desc].each do |obs|
        raise ObserverError, obs unless obs.respond_to? :update
        add_observer(obs)
      end
    end
  end
end

Instance Method Details

#notif(*args) ⇒ Object 



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# File 'lib/uttk/filters/Filter.rb', line 31

def notif ( *args )
  changed
  notify_observers(*args)
end