class Kaminari::Helpers::PaginationRenderer

def clear_content_for(name)
  @template.instance_variable_get('@_content_for')[name] = ActiveSupport::SafeBuffer.new
end

def initialize(template, options)
  @template, @options = template, options
  @left, @window, @right = (options[:left] || options[:outer_window] || 1), (options[:window] || options[:inner_window] || 4), (options[:right] || options[:outer_window] || 1)
end

def method_missing(meth, *args, &blk)
  @template.send meth, *args, &blk
end

def render_partial(event)
end

def suppress_logging_render_partial(&blk)
  if subscriber = ActionView::LogSubscriber.log_subscribers.detect {|ls| ls.is_a? ActionView::LogSubscriber}
    class << subscriber
      alias_method :render_partial_with_logging, :render_partial
      # do nothing
      def render_partial(event)
      end
    end
    ret = blk.call
    class << subscriber
      alias_method :render_partial, :render_partial_with_logging
      undef :render_partial_with_logging
    end
    ret
  else
    blk.call
  end
end

def tagify_links
  num_pages, current_page, left, window, right = @options[:num_pages], @options[:current_page], @left, @window, @right
  return [] if num_pages <= 1
  tags = []
  tags << (current_page > 1 ? PrevLink.new(self) : PrevSpan.new(self))
  1.upto(num_pages) do |i|
    if i == current_page
      tags << CurrentPage.new(self, :page => i)
    elsif (i <= left + 1) || ((num_pages - i) <= right) || ((i - current_page).abs <= window)
      case i
      when 1
        tags << FirstPageLink.new(self, :page => i)
      when num_pages
        tags << LastPageLink.new(self, :page => i)
      else
        tags << PageLink.new(self, :page => i)
      end
    else
      tags << TruncatedSpan.new(self) unless tags.last.is_a? TruncatedSpan
    end
  end
  tags << (num_pages > current_page ? NextLink.new(self) : NextSpan.new(self))
end

def to_s
  suppress_logging_render_partial do
    clear_content_for :kaminari_paginator_tags
    @template.content_for :kaminari_paginator_tags, tagify_links.join("\n").html_safe
    Paginator.new(self).to_s
  end
end