Class: Redwood::LabelManager

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/sup/label.rb

Constant Summary collapse

RESERVED_LABELS =

labels that have special semantics. user will be unable to add/remove these via normal label mechanisms.

[ :starred, :spam, :draft, :unread, :killed, :sent, :deleted, :inbox ]
LISTABLE_RESERVED_LABELS =

labels which it nonetheless makes sense to search for by

[ :starred, :spam, :draft, :sent, :killed, :deleted, :inbox ]
HIDDEN_RESERVED_LABELS =

labels that will typically be hidden from the user

[ :starred, :unread ]

Instance Method Summary collapse

Constructor Details

#initialize(fn) ⇒ LabelManager

Returns a new instance of LabelManager.



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# File 'lib/sup/label.rb', line 16

def initialize fn
  @fn = fn
  labels = 
    if File.exists? fn
      IO.readlines(fn).map { |x| x.chomp.intern }
    else
      []
    end
  @labels = {}
  @modified = false
  labels.each { |t| @labels[t] = true }

  self.class.i_am_the_instance self
end

Instance Method Details

#<<(t) ⇒ Object 



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# File 'lib/sup/label.rb', line 65

def << t
  t = t.intern unless t.is_a? Symbol
  unless @labels.member?(t) || RESERVED_LABELS.member?(t)
    @labels[t] = true
    @modified = true
  end
end

#applyable_labels ⇒ Object

all apply-able (user-defined and system listable) labels, ordered nicely and converted to pretty strings. use #label_for to recover the original label.



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# File 'lib/sup/label.rb', line 42

def applyable_labels
  @labels.keys
end

#delete(t) ⇒ Object 



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# File 'lib/sup/label.rb', line 73

def delete t
  if @labels.delete t
    @modified = true
  end
end

#label_for(s) ⇒ Object 



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# File 'lib/sup/label.rb', line 55

def label_for s
  l = s.intern
  l2 = s.downcase.intern
  if RESERVED_LABELS.include? l2
    l2
  else
    l
  end
end

#listable_labels ⇒ Object

all listable (just user-defined at the moment) labels, ordered nicely and converted to pretty strings. use #label_for to recover the original label.



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# File 'lib/sup/label.rb', line 34

def listable_labels
  ## uniq's only necessary here because of certain upgrade issues
  (LISTABLE_RESERVED_LABELS + @labels.keys).uniq
end

#save ⇒ Object 



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# File 'lib/sup/label.rb', line 79

def save
  return unless @modified
  File.open(@fn, "w") { |f| f.puts @labels.keys }
end

#string_for(l) ⇒ Object

reverse the label->string mapping, for convenience!



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# File 'lib/sup/label.rb', line 47

def string_for l
  if RESERVED_LABELS.include? l
    l.to_s.ucfirst
  else
    l.to_s
  end
end