#--
# Copyright (C) 2007 Dimitrij Denissenko
# Please read LICENSE document for more information.
#++
module TicketFilterHelper

  def ticket_filter_selector(filter_set)
    filter_set.filters.collect do |filter|
      title = content_tag(:dt, h(filter.category_name))
      links = content_tag(:dd, links_for_ticket_filter(filter))
      content_tag(:dl, title + links)
    end.join("\n") + search_filter
  end

  protected

    def search_filter
      title = content_tag(:dt, _('Search'))
      links = content_tag(:dd, text_field_tag(:search_filter))
      content_tag(:dl, title + links) + search_filter_observer     
    end
  
    def search_filter_observer
      observe_field :search_filter, rl_ajax_options.merge(:frequency => 0.5, :with => 'search')
    end
      
    def links_for_ticket_filter(filter)
      filter.values.collect do |record|
        excl = exclusive_filter_link(filter, record)      
        incl = inclusive_filter_link(filter, record)      
        content_tag(:div, excl + ' ' + incl, :class => 'option')
      end.join("\n")
    end       
  
    def link_to_ticket_filter(caption, options, html_options = {})
      link_to(caption, options.merge(:report => nil), html_options)
    end
  
    def exclusive_filter_link(filter, record)
      caption = record.send(filter.name_method)
      options = { :title => _('Select filter') }
      options[:class] = 'active' if filter.include?(record.id)    
      link_to_ticket_filter(h(caption), filter.to_params(record.id), options)
    end
  
    def inclusive_filter_link(filter, record)
      caption = filter.include?(record.id) ?
        image_tag('minus.png', :alt => _('Remove filter'), :title => _('Remove filter')) : 
        image_tag('plus.png', :alt => _('Add filter'), :title => _('Add filter'))
      link_to_ticket_filter(caption, filter.to_params(record.id, false))
    end     

end