DEV: Restore textarea type for site settings

Currenty, no settings in core use this, but textareas will be useful in theme settings and plugins.

lib/site_settings/type_supervisor.rb

@@ -6,7 +6,7 @@ module SiteSettings; end
 class SiteSettings::TypeSupervisor
   include SiteSettings::Validations
 
-  CONSUMED_OPTS = %i[enum choices type validator min max regex hidden regex_error allow_any list_type].freeze
+  CONSUMED_OPTS = %i[enum choices type validator min max regex hidden regex_error allow_any list_type textarea].freeze
   VALIDATOR_OPTS = %i[min max regex hidden regex_error].freeze
 
   # For plugins, so they can tell if a feature is supported
@@ -65,11 +65,16 @@ class SiteSettings::TypeSupervisor
     @types = {}
     @allow_any = {}
     @list_type = {}
+    @textareas = {}
   end
 
   def load_setting(name_arg, opts = {})
     name = name_arg.to_sym
 
+    if opts[:textarea]
+      @textareas[name] = opts[:textarea]
+    end
+
     if (enum = opts[:enum])
       @enums[name] = enum.is_a?(String) ? enum.constantize : enum
       opts[:type] ||= :enum
@@ -148,6 +153,8 @@ class SiteSettings::TypeSupervisor
 
     result[:choices] = @choices[name] if @choices.has_key? name
     result[:list_type] = @list_type[name] if @list_type.has_key? name
+    result[:textarea] = @textareas[name] if @textareas.has_key? name
+
     result
   end
 

spec/components/site_settings/type_supervisor_spec.rb

@@ -331,6 +331,7 @@ describe SiteSettings::TypeSupervisor do
       settings.setting(:type_float, 2.3232)
       settings.setting(:type_string, 'string')
       settings.setting(:type_url_list, 'string', type: 'url_list')
+      settings.setting(:type_textarea, 'string', textarea: true)
       settings.setting(:type_enum_choices, '2', type: 'enum', choices: ['1', '2'])
       settings.setting(:type_enum_class, 'a', enum: 'TestEnumClass2')
       settings.setting(:type_list, 'a', type: 'list', choices: ['a', 'b'], list_type: 'compact')
@@ -355,6 +356,9 @@ describe SiteSettings::TypeSupervisor do
     it 'returns url_list type' do
       expect(settings.type_supervisor.type_hash(:type_url_list)[:type]).to eq 'url_list'
     end
+    it 'returns textarea type' do
+      expect(settings.type_supervisor.type_hash(:type_textarea)[:textarea]).to eq true
+    end
     it 'returns enum type' do
       expect(settings.type_supervisor.type_hash(:type_enum_choices)[:type]).to eq 'enum'
     end