class Mechanize::History

# File lib/mechanize/history.rb, line 8
def initialize(max_size = nil)
  @max_size       = max_size
  @history_index  = {}
end

# File lib/mechanize/history.rb, line 50
def clear
  @history_index.clear
  super
end

# File lib/mechanize/history.rb, line 13
def initialize_copy(orig)
  super
  @history_index = orig.instance_variable_get(:@history_index).dup
end

# File lib/mechanize/history.rb, line 66
def pop
  return nil if length == 0
  page = super
  remove_from_index(page)
  page
end

# File lib/mechanize/history.rb, line 24
def push(page, uri = nil)
  super page

  index = uri ? uri : page.uri
  @history_index[index.to_s] = page

  shift while length > @max_size if @max_size

  self
end

# File lib/mechanize/history.rb, line 55
def shift
  return nil if length == 0
  page    = self[0]
  self[0] = nil

  super

  remove_from_index(page)
  page
end

# File lib/mechanize/history.rb, line 37
def visited? uri
  page = @history_index[uri.to_s]

  return page if page # HACK

  uri = uri.dup
  uri.path = '/' if uri.path.empty?

  @history_index[uri.to_s]
end