Class: Alexandria::BookProviders::AbstractProvider

Inherits:
Object
  • Object
show all
Includes:
GetText
Defined in:
lib/alexandria/book_providers.rb,
lib/alexandria/ui/init.rb

Direct Known Subclasses

GenericProvider, Z3950Provider

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, fullname = nil) ⇒ AbstractProvider

Returns a new instance of AbstractProvider.



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# File 'lib/alexandria/book_providers.rb', line 202

def initialize(name, fullname = nil)
  @name = name
  @fullname = (fullname || name)
  @prefs = Preferences.new(self)
  @prefs.add('enabled', _('Enabled'), true, [true, false])
end

Instance Attribute Details

#fullname ⇒ Object

Returns the value of attribute fullname.



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# File 'lib/alexandria/book_providers.rb', line 200

def fullname
  @fullname
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/alexandria/book_providers.rb', line 200

def name
  @name
end

#prefs ⇒ Object (readonly)

Returns the value of attribute prefs.



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# File 'lib/alexandria/book_providers.rb', line 199

def prefs
  @prefs
end

Class Method Details

.abstract? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/alexandria/book_providers.rb', line 270

def self.abstract?
  !included_modules.include?(Singleton)
end

.unabstract ⇒ Object

FIXME: Clean up this complex abstract/concrete class system



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# File 'lib/alexandria/book_providers.rb', line 279

def self.unabstract
  include Singleton
  undef_method :reinitialize
  undef_method :name=
  undef_method :fullname=
  undef_method :remove
end

Instance Method Details

#<=>(provider) ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 274

def <=>(provider)
  fullname <=> provider.fullname
end

#abstract? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/alexandria/book_providers.rb', line 266

def abstract?
  self.class.abstract?
end

#action_name ⇒ Object 



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# File 'lib/alexandria/ui/init.rb', line 68

def action_name
  'At' + name
end

#enabled ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 209

def enabled
  @prefs['enabled']
end

#reinitialize(fullname) ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 218

def reinitialize(fullname)
  @name << '_' << fullname.hash.to_s
  @fullname = fullname
  prefs = Alexandria::Preferences.instance
  ary = prefs.abstract_providers
  ary ||= []
  ary << @name
  prefs.abstract_providers = ary
  message = variable_name('name') + '='
  prefs.send(message, @fullname)
end

#remove ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 230

def remove
  prefs = Alexandria::Preferences.instance
  if (ary = prefs.abstract_providers)
    ary.delete(@name)
    prefs.abstract_providers = ary
  end
  if (ary = prefs.providers_priority) && ary.include?(@name)
    ary.delete(@name)
    prefs.providers_priority = ary
  end
  self.prefs.each do |variable|
    name = variable_name(variable)
    prefs.remove_preference(name)
  end
  name = variable_name('name')
  prefs.remove_preference(name)
  prefs.save!
end

#toggle_enabled ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 213

def toggle_enabled
  old_value = enabled
  @prefs.variable_named('enabled').new_value = !old_value
end

#transport ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 261

def transport
  config = Alexandria::Preferences.instance.http_proxy_config
  config ? Net::HTTP.Proxy(*config) : Net::HTTP
end

#variable_name(object) ⇒ Object 



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# File 'lib/alexandria/book_providers.rb', line 249

def variable_name(object)
  s = case object
      when String
        object
      when Preferences::Variable
        object.name
      else
        raise
      end
  @name.downcase + '_' + s
end