Sync with upstream. Make the wx frontend work without any twisted

dependencies.

IPython/frontend/wx/wx_frontend.py

@@ -1,207 +1,201 b''
 # encoding: utf-8 -*- test-case-name:
+# FIXME: Need to add tests.
 # ipython1.frontend.cocoa.tests.test_cocoa_frontend -*-
 
 """Classes to provide a Wx frontend to the
 ipython1.kernel.engineservice.EngineService.
 
 """
 
 __docformat__ = "restructuredtext en"
 
 #-------------------------------------------------------------------------------
 #       Copyright (C) 2008  The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-------------------------------------------------------------------------------
 
 #-------------------------------------------------------------------------------
 # Imports
 #-------------------------------------------------------------------------------
 
 
 import wx
 from console_widget import ConsoleWidget
 import re
 
 import IPython
-from IPython.kernel.engineservice import EngineService
-from IPython.kernel.core.history import FrontEndHistory
+from IPython.kernel.core.interpreter import Interpreter
 from IPython.frontend.frontendbase import FrontEndBase
 
 #-------------------------------------------------------------------------------
 # Classes to implement the Wx frontend
 #-------------------------------------------------------------------------------
 
    
 
 
 class IPythonWxController(FrontEndBase, ConsoleWidget):
 
     output_prompt = \
     '\n\x01\x1b[0;31m\x02Out[\x01\x1b[1;31m\x02%i\x01\x1b[0;31m\x02]: \x01\x1b[0m\x02'
   
     # Are we entering multi line input?
     multi_line_input = False
 
     # The added tab stop to the string. It may, for instance, come from 
     # copy and pasting something with tabs.
     tab_stop = 0
     # FIXME: We still have to deal with this.
 
     #--------------------------------------------------------------------------
     # Public API
     #--------------------------------------------------------------------------
  
     def __init__(self, parent, id=wx.ID_ANY, pos=wx.DefaultPosition,
                  size=wx.DefaultSize, style=wx.CLIP_CHILDREN,
                  *args, **kwds):
         """ Create Shell instance.
         """
         ConsoleWidget.__init__(self, parent, id, pos, size, style)
-        FrontEndBase.__init__(self, engine=EngineService(),
+        FrontEndBase.__init__(self, shell=Interpreter(),
                                     )
 
         # FIXME: Something is wrong with the history, I instanciate it
         # with an empty cache, but this is not the way to do.
         self.lines = {}
 
         # Start the IPython engine
-        self.engine.startService()
+        self.shell
         
         # Capture Character keys
         self.Bind(wx.EVT_KEY_DOWN, self._on_key_down)
        
         #FIXME: print banner.
         banner = """IPython1 %s -- An enhanced Interactive Python.""" \
                             % IPython.__version__
     
     
-    def appWillTerminate_(self, notification):
-        """appWillTerminate"""
-        
-        self.engine.stopService()
-    
-    
     def complete(self, token):
         """Complete token in engine's user_ns
         
         Parameters
         ----------
         token : string
         
         Result
         ------
         Deferred result of 
         IPython.kernel.engineservice.IEngineBase.complete
         """
         
-        return self.engine.complete(token)
+        return self.shell.complete(token)
     
     
     def render_result(self, result):
         if 'stdout' in result and result['stdout']:
             self.write('\n' + result['stdout'])
         if 'display' in result and result['display']:
             self.write("%s%s\n" % ( 
                             self.output_prompt % result['number'],
                             result['display']['pprint']
                             ) )
     
         
     def render_error(self, failure):
         self.insert_text('\n\n'+str(failure)+'\n\n')
         return failure
     
     
     #--------------------------------------------------------------------------
     # Private API
     #--------------------------------------------------------------------------
  
 
     def _on_key_down(self, event, skip=True):
         """ Capture the character events, let the parent
             widget handle them, and put our logic afterward.
         """
         current_line_number = self.GetCurrentLine()
         # Capture enter
         if event.KeyCode in (13, wx.WXK_NUMPAD_ENTER) and \
                 event.Modifiers in (wx.MOD_NONE, wx.MOD_WIN):
             self._on_enter()
         # Up history
         elif event.KeyCode == wx.WXK_UP and (
                 ( current_line_number == self.current_prompt_line and
                     event.Modifiers in (wx.MOD_NONE, wx.MOD_WIN) ) 
                 or event.ControlDown() ):
             new_buffer = self.get_history_previous(
                                         self.get_current_edit_buffer())
             if new_buffer is not None:
                 self.replace_current_edit_buffer(new_buffer)
         # Down history
         elif event.KeyCode == wx.WXK_DOWN and (
                 ( current_line_number == self.LineCount -1 and
                     event.Modifiers in (wx.MOD_NONE, wx.MOD_WIN) ) 
                 or event.ControlDown() ):
             new_buffer = self.get_history_next()
             if new_buffer is not None:
                 self.replace_current_edit_buffer(new_buffer)
         else:
             ConsoleWidget._on_key_down(self, event, skip=True)
 
 
     def _on_enter(self):
         """ Called when the return key is pressed in a line editing
             buffer.
         """
         current_buffer = self.get_current_edit_buffer()
         current_buffer = current_buffer.replace('\r\n', '\n')
         current_buffer = current_buffer.replace('\t', 4*' ')
         cleaned_buffer = '\n'.join(l.rstrip() 
                         for l in current_buffer.split('\n'))
         if (    not self.multi_line_input
                 or re.findall(r"\n[\t ]*$", cleaned_buffer)):
             if self.is_complete(cleaned_buffer):
                 self._add_history(None, cleaned_buffer.rstrip())
-                result = self.engine.shell.execute(cleaned_buffer)
+                result = self.shell.execute(cleaned_buffer)
                 self.render_result(result)
                 self.new_prompt(self.prompt % (result['number'] + 1))
                 self.multi_line_input = False
             else:
                 if self.multi_line_input:
                     self.write('\n' + self._get_indent_string(current_buffer))
                 else:
                     self.multi_line_input = True
                     self.write('\n\t')
         else:
             self.write('\n'+self._get_indent_string(current_buffer))
 
 
     def _get_indent_string(self, string):
         string = string.split('\n')[-1]
         indent_chars = len(string) - len(string.lstrip())
         indent_string = '\t'*(indent_chars // 4) + \
                             ' '*(indent_chars % 4)
 
         return indent_string
  
         
 
 if __name__ == '__main__':
     class MainWindow(wx.Frame):
         def __init__(self, parent, id, title):
             wx.Frame.__init__(self, parent, id, title, size=(300,250))
             self._sizer = wx.BoxSizer(wx.VERTICAL)
             self.shell = IPythonWxController(self)
             self._sizer.Add(self.shell, 1, wx.EXPAND)
             self.SetSizer(self._sizer)
             self.SetAutoLayout(1)
             self.Show(True)
 
     app = wx.PySimpleApp()
     frame = MainWindow(None, wx.ID_ANY, 'Ipython')
     frame.shell.SetFocus()
     frame.SetSize((660, 460))
     self = frame.shell
 
     app.MainLoop()