added heavy filter widget

lib/widget/filters/heavy.rb

@@ -0,0 +1,43 @@
+# FIXME: This basically is the MultiValues-Filter, except that we do not show
+#        The select-box. This way we allow our JS to pretend this is just another
+#        Filter. This is overhead...
+#        But well this is again one of those temporary solutions.
+
+class Widget::Filters::Heavy < Widget::Filters::Base
+
+  def render
+    write(content_tag :td do
+      opts = Array(filter.values).empty? ? [] : filter.values.first.map{ |i| filter_class.label_for_value(i.to_i) }
+      div = content_tag :div, :id => "#{filter_class.underscore_name}_arg_1", :class => "filter_values hidden" do
+        select_options = {  :"data-remote-url" => url_for(:action => "available_values"),
+                            :name => "values[#{filter_class.underscore_name}][]",
+                            :"data-loading" => "",
+                            :id => "#{filter_class.underscore_name}_arg_1_val",
+                            :class => "select-small filters-select filter-value",
+                            :"data-filter-name" => filter_class.underscore_name,
+                            :multiple => "multiple" }
+                            # multiple will be disabled/enabled later by JavaScript anyhow.
+                            # We need to specify multiple here because of an IE6-bug.
+        if filter_class.has_dependent?
+          all_dependents = filter_class.all_dependents.map {|d| d.underscore_name}.to_json
+          select_options.merge! :"data-all-dependents" => all_dependents.gsub!('"', "'")
+          next_dependents = filter_class.dependents.map {|d| d.underscore_name}.to_json
+          select_options.merge! :"data-next-dependents" => next_dependents.gsub!('"', "'")
+        end
+        # store selected value(s) in data-initially-selected if this filter is a dependent
+        # of another filter, as we have to restore values manually in the client js
+        if (filter_class.is_dependent? || @options[:lazy]) && !Array(filter.values).empty?
+          select_options.merge! :"data-initially-selected" => filter.values.to_json.gsub!('"', "'")
+        end
+        box = content_tag :select, select_options do
+          render_widget Widget::Filters::Option, filter, :to => "", :content => opts
+        end
+        box
+      end
+      alternate_text = opts.map{ |o| o.first }.join(', ').html_safe
+      div + content_tag(:label) do
+        alternate_text
+      end
+    end)
+  end
+end