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Contents
module Redwood
class LabelManager
include Singleton
## labels that have special semantics. user will be unable to
## add/remove these via normal label mechanisms.
RESERVED_LABELS = [ :starred, :spam, :draft, :unread, :killed, :sent, :deleted, :inbox, :attachment ]
## labels that will typically be hidden from the user
HIDDEN_RESERVED_LABELS = [ :starred, :unread, :attachment ]
def initialize fn
@fn = fn
labels =
if File.exists? fn
IO.readlines(fn).map { |x| x.chomp.intern }
else
[]
end
@labels = {}
@new_labels = {}
@modified = false
labels.each { |t| @labels[t] = true }
end
def new_label? l; @new_labels.include?(l) end
## all labels user-defined and system, ordered
## nicely and converted to pretty strings. use #label_for to recover
## the original label.
def all_labels
## uniq's only necessary here because of certain upgrade issues
(RESERVED_LABELS + @labels.keys).uniq
end
## all user-defined labels, ordered
## nicely and converted to pretty strings. use #label_for to recover
## the original label.
def user_defined_labels
@labels.keys
end
## reverse the label->string mapping, for convenience!
def string_for l
if RESERVED_LABELS.include? l
l.to_s.capitalize
else
l.to_s
end
end
def label_for s
l = s.intern
l2 = s.downcase.intern
if RESERVED_LABELS.include? l2
l2
else
l
end
end
def << t
raise ArgumentError, "expecting a symbol" unless t.is_a? Symbol
unless @labels.member?(t) || RESERVED_LABELS.member?(t)
@labels[t] = true
@new_labels[t] = true
@modified = true
end
end
def delete t
if @labels.delete(t)
@modified = true
end
end
def save
return unless @modified
File.open(@fn, "w") { |f| f.puts @labels.keys.sort_by { |l| l.to_s } }
@new_labels = {}
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems