Introduce some classes necessary fro Pygments refactor.

IPython/utils/colorable.py

@@ -0,0 +1,26 b''
+#*****************************************************************************
+# Copyright (C) 2016 The IPython Team <[e-mail]>
+#
+# Distributed under the terms of the BSD License.  The full license is in
+# the file COPYING, distributed as part of this software.
+#*****************************************************************************
+from __future__ import absolute_import
+
+"""
+Color managing related utilities
+"""
+
+import pygments
+
+from traitlets.config import Configurable
+from traitlets import Unicode
+
+
+available_themes = lambda : [s for s in pygments.styles.get_all_styles()]+['NoColor','LightBG','Linux']
+
+class Colorable(Configurable):
+    """
+    A subclass of configurable for all the classes that have a `default_scheme`
+    """
+    default_style=Unicode('lightbg', config=True)
+

IPython/core/oinspect.py

@@ -42,6 +42,7 b' from IPython.utils.wildcard import list_namespace'
 from IPython.utils.coloransi import TermColors, ColorScheme, ColorSchemeTable
 from IPython.utils.py3compat import cast_unicode, string_types, PY3
 from IPython.utils.signatures import signature
+from IPython.utils.colorable import Colorable
 
 # builtin docstrings to ignore
 _func_call_docstring = types.FunctionType.__call__.__doc__
@@ -365,13 +366,15 b' def find_source_lines(obj):'
     return lineno
 
 
-class Inspector:
+class Inspector(Colorable):
     def __init__(self, color_table=InspectColors,
                  code_color_table=PyColorize.ANSICodeColors,
                  scheme='NoColor',
-                 str_detail_level=0):
+                 str_detail_level=0, 
+                 parent=None, config=None):
+        super(Inspector, self).__init__(parent=parent, config=config)
         self.color_table = color_table
-        self.parser = PyColorize.Parser(code_color_table,out='str')
+        self.parser = PyColorize.Parser(out='str', parent=self, style=scheme)
         self.format = self.parser.format
         self.str_detail_level = str_detail_level
         self.set_active_scheme(scheme)

IPython/core/ultratb.py

@@ -85,6 +85,7 b' Inheritance diagram:'
 # the file COPYING, distributed as part of this software.
 #*****************************************************************************
 
+from __future__ import absolute_import
 from __future__ import unicode_literals
 from __future__ import print_function
 
@@ -125,6 +126,8 b' from IPython.utils import ulinecache'
 from IPython.utils.data import uniq_stable
 from logging import info, error
 
+import IPython.utils.colorable as colorable
+
 # Globals
 # amount of space to put line numbers before verbose tracebacks
 INDENT_SIZE = 8
@@ -476,15 +479,16 b' def find_recursion(etype, value, records):'
 
 #---------------------------------------------------------------------------
 # Module classes
-class TBTools(object):
+class TBTools(colorable.Colorable):
     """Basic tools used by all traceback printer classes."""
 
     # Number of frames to skip when reporting tracebacks
     tb_offset = 0
 
-    def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None):
+    def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None, config=None):
         # Whether to call the interactive pdb debugger after printing
         # tracebacks or not
+        super(TBTools, self).__init__(parent=parent, config=config)
         self.call_pdb = call_pdb
 
         # Output stream to write to.  Note that we store the original value in
@@ -590,9 +594,9 b' class ListTB(TBTools):'
     Because they are meant to be called without a full traceback (only a
     list), instances of this class can't call the interactive pdb debugger."""
 
-    def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None):
+    def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None):
         TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
-                         ostream=ostream)
+                         ostream=ostream, parent=parent)
 
     def __call__(self, etype, value, elist):
         self.ostream.flush()

IPython/utils/PyColorize.py

@@ -54,6 +54,8 b' except AttributeError:'
 from IPython.utils.coloransi import TermColors, InputTermColors ,ColorScheme, ColorSchemeTable
 from IPython.utils.py3compat import PY3
 
+from .colorable import Colorable
+
 if PY3:
     from io import StringIO
 else:
@@ -148,15 +150,18 b' LightBGColors = ColorScheme('
 ANSICodeColors = ColorSchemeTable([NoColor,LinuxColors,LightBGColors],
                                   _scheme_default)
 
-class Parser:
+class Parser(Colorable):
     """ Format colored Python source.
     """
 
-    def __init__(self, color_table=None,out = sys.stdout):
+    def __init__(self, color_table=None, out = sys.stdout, parent=None, style=None):
         """ Create a parser with a specified color table and output channel.
 
         Call format() to process code.
         """
+
+        super(Parser, self).__init__(parent=parent)
+
         self.color_table = color_table and color_table or ANSICodeColors
         self.out = out