#--
# Copyright (c) 2010-2011 Peter Horn, Provideal GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++

class Tabulatr

  # the method used to actually define the filters of the columns,
  # taking the name of the attribute and a hash of options.
  #
  # The following options are evaluated here:
  # <tt>:filter_html</tt>:: a hash with html-attributes added to the <ts>s created
  # <tt>:filter</tt>:: may take different values:
  #                    <tt>false</tt>:: no filter is output for this column
  #                    a container:: the keys of the hash are used to define a <tt>select</tt>
  #                             where the values are the <tt>value</tt> of the <tt>options</tt>.
  #                    an Array:: the elements of that array are used to define a
  #                               <tt>select</tt>
  #                    a String:: a <tt>select</tt> is created with that String as options
  #                               you can use ActionView#collection_select and the like
  def empty_column(name, opts={}, &block)
    raise "Not in empty mode!" if @row_mode != :empty
    opts = normalize_column_options(name, opts)
    make_tag(:td, opts[:filter_html])
  end
end