Updating DOM code to use list mixins

tools/dom/scripts/htmldartgenerator.py

 #!/usr/bin/python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """This module provides shared functionality for the system to generate
 dart:html APIs from the IDL database."""
 
 import emitter
 from generator import AnalyzeOperation, ConstantOutputOrder, \
@@ skipping 311 matching lines @@
     implements = []
     if self._interface_type_info.is_typed_array():
       element_type = self._interface_type_info.list_item_type()
       implements.append('List<%s>' % element_type)
     elif self._interface_type_info.list_item_type():
       item_type_info = self._type_registry.TypeInfo(
           self._interface_type_info.list_item_type())
       implements.append('List<%s>' % item_type_info.dart_type())
     return implements
 
+  def Mixins(self):
+    mixins = []
+    item_type = None
+    if self._interface_type_info.is_typed_array():
+      item_type = self._interface_type_info.list_item_type()
+    elif self._interface_type_info.list_item_type():
+      item_type = self._type_registry.TypeInfo(
+          self._interface_type_info.list_item_type()).dart_type()
+    if item_type:
+      mixins.append('ListMixin<%s>' % item_type)
+      mixins.append('ImmutableListMixin<%s>' % item_type)
+
+    return mixins
+
+
   def AddConstructors(self,
       constructors, factory_name, factory_constructor_name):
     """ Adds all of the constructors.
     Arguments:
       constructors - List of the constructors to be added.
       factory_name - Name of the factory for this class.
       factory_constructor_name - The name of the constructor on the
           factory_name to call (calls an autogenerated FactoryProvider
           if unspecified)
     """
@@ skipping 214 matching lines @@
              '\n'
              '  $TYPE $NAME($PARAMS);\n',
              TYPE=return_type_name,
              NAME=method_name,
              PARAMS=operation.ParametersDeclaration(self._DartType))
 
   def EmitListMixin(self, element_name):
     # TODO(sra): Use separate mixins for mutable implementations of List<T>.
     # TODO(sra): Use separate mixins for typed array implementations of List<T>.
     template_file = 'immutable_list_mixin.darttemplate'
-    has_contains = any(op.id == 'contains' for op in self._interface.operations)
-    has_clear = any(op.id == 'clear' for op in self._interface.operations)
     has_length = False
     has_length_setter = False
     typed_array = self._interface_type_info.is_typed_array()
 
     for attr in self._interface.attributes:
       if attr.id == 'length':
         has_length = True
         has_length_setter = not attr.is_read_only
 
     has_num_items = any(attr.id == 'numberOfItems'
         for attr in self._interface.attributes)
 
     template = self._template_loader.Load(
         template_file,
         {
-          'DEFINE_CONTAINS': not has_contains,
-          'DEFINE_CLEAR': not has_clear,
           'DEFINE_IMMUTABLE': not typed_array,
           'DEFINE_LENGTH_AS_NUM_ITEMS': not has_length and has_num_items,
           'DEFINE_LENGTH_SETTER': not has_length_setter,
         })
     self._members_emitter.Emit(template, E=element_name)
 
   def SecureOutputType(self, type_name, is_dart_type=False):
     """ Converts the type name to the secure type name for return types.
     """
     if is_dart_type:
@@ skipping 39 matching lines @@
         walk(interface.parents)
       else:
         walk(interface.parents[1:])
     return result
 
   def _DartType(self, type_name):
     return self._type_registry.DartType(type_name)
 
   def _IsPrivate(self, name):
     return name.startswith('_')