Gmail pagination style with Will Paginate

gmail_will_paginate.rb

# config/initializers/gmail_will_paginate.rb 

# USAGE:
# <%= will_paginate(@posts, :renderer => WillPaginate::Gmail) %>

module WillPaginate
  class Gmail < ::WillPaginate::ActionView::LinkRenderer
    def pagination
      [:window, :pagination_buttons]
    end

    protected
    def pagination_buttons
      next_link = previous_or_next_page(@collection.current_page > 1 && @collection.current_page - 1, tag(:i, '', :class => 'icon-chevron-left'), 'btn btn-mini')
      prev_link = previous_or_next_page(@collection.current_page < @collection.total_pages && @collection.current_page + 1, tag(:i, '', :class => 'icon-chevron-right'), 'btn btn-mini')
      tag(:div, "#{next_link}#{prev_link}", :class => 'btn-group')
    end

    def window
      total_entries = @collection.total_entries
      base          = @collection.offset
      high          = base + @collection.per_page > total_entries ? total_entries : base + @collection.per_page
      tag(:span, "#{tag(:strong, base + 1)} - #{tag(:strong, high)} of #{tag(:strong, total_entries)}", :class => 'pagination-meta')
    end
  end
end

Google Bootstrap + Font Awesome + Will Paginate = Gmail pagination style

Example: