Remove EventListener attributes from Dart DOM API.

lib/dom/scripts/dartgenerator.py

Index: lib/dom/scripts/dartgenerator.py
diff --git a/lib/dom/scripts/dartgenerator.py b/lib/dom/scripts/dartgenerator.py
index 7e3d246ec89ce8dcb2be9c44ec308bb2091b3c2b..f22b8ca502bd361c3d044c0b67800e5d9be8d300 100755
--- a/lib/dom/scripts/dartgenerator.py
+++ b/lib/dom/scripts/dartgenerator.py
@@ -351,7 +351,6 @@ class DartGenerator(object):
     for system in self._systems:
       system.Finish()
 
-
   def _PreOrderInterfaces(self, interfaces):
     """Returns the interfaces in pre-order, i.e. parents first."""
     seen = set()
@@ -394,7 +393,7 @@ class DartGenerator(object):
         generator.AddConstant(const)
 
     attributes = [attr for attr in interface.attributes
-                  if not self._IsEventAttribute(interface, attr)]
+                  if attr.type.id != 'EventListener']
     for (getter, setter) in  _PairUpAttributes(attributes):
       for generator in generators:
         generator.AddAttribute(getter, setter)
@@ -452,12 +451,6 @@ class DartGenerator(object):
       generator.FinishInterface()
     return
 
-  def _IsEventAttribute(self, interface, attr):
-    # Remove EventListener attributes like 'onclick' when addEventListener
-    # is available.
-    return (attr.type.id == 'EventListener' and
-        'EventTarget' in self._AllImplementedInterfaces(interface))
-
   def _TransitiveSecondaryParents(self, interface):
     """Returns a list of all non-primary parents.
 
@@ -518,6 +511,13 @@ class DartGenerator(object):
 
     self._inheritance_closure = {}
     for interface in self._database.GetInterfaces():
+      # Create fake EventTarget parent interface for interfaces that have

[sra1, 2012/04/12 15:56:17]

I think it would be best to move this fixing to a separate function, e.g.
_FixEventTargets, called before _ComputeInheritanceClosure.
That way _ComputeInheritanceClosure is still an accurate name.

+      # 'EventTarget' extended attribute.
+      if 'EventTarget' in interface.ext_attrs:
+        ast = [('Annotation', [('Id', 'WebKit')]),
+               ('InterfaceType', ('ScopedName', 'EventTarget'))]
+        interface.parents.append(idlnode.IDLParentInterface(ast))
+
       seen = set()
       collected = []
       Collect(interface, seen, collected)