Syncing with ipython-sync-frontend branch.

IPython/frontend/wx/wx_frontend.py.moved

@@ -0,0 +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.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, 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.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 complete(self, token):
+        """Complete token in engine's user_ns
+        
+        Parameters
+        ----------
+        token : string
+        
+        Result
+        ------
+        Deferred result of 
+        IPython.kernel.engineservice.IEngineBase.complete
+        """
+        
+        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.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()
+

IPython/frontend/wx/wx_frontend.py

@@ -26,7 +26,7 b' from console_widget import ConsoleWidget'
 import re
 
 import IPython
-from IPython.kernel.core.interpreter import Interpreter
+from IPython.kernel.engineservice import EngineService
 from IPython.frontend.frontendbase import FrontEndBase
 
 #-------------------------------------------------------------------------------
@@ -59,7 +59,7 b' class IPythonWxController(FrontEndBase, ConsoleWidget):'
         """ Create Shell instance.
         """
         ConsoleWidget.__init__(self, parent, id, pos, size, style)
-        FrontEndBase.__init__(self, shell=Interpreter(),
+        FrontEndBase.__init__(self, engine=EngineService(),
                                     )
 
         # FIXME: Something is wrong with the history, I instanciate it
@@ -67,7 +67,7 b' class IPythonWxController(FrontEndBase, ConsoleWidget):'
         self.lines = {}
 
         # Start the IPython engine
-        self.shell
+        self.engine.startService()
         
         # Capture Character keys
         self.Bind(wx.EVT_KEY_DOWN, self._on_key_down)
@@ -77,6 +77,12 b' class IPythonWxController(FrontEndBase, ConsoleWidget):'
                             % IPython.__version__
     
     
+    def appWillTerminate_(self, notification):
+        """appWillTerminate"""
+        
+        self.engine.stopService()
+    
+    
     def complete(self, token):
         """Complete token in engine's user_ns
         
@@ -90,7 +96,7 b' class IPythonWxController(FrontEndBase, ConsoleWidget):'
         IPython.kernel.engineservice.IEngineBase.complete
         """
         
-        return self.shell.complete(token)
+        return self.engine.complete(token)
     
     
     def render_result(self, result):
@@ -156,7 +162,7 b' class IPythonWxController(FrontEndBase, ConsoleWidget):'
                 or re.findall(r"\n[\t ]*$", cleaned_buffer)):
             if self.is_complete(cleaned_buffer):
                 self._add_history(None, cleaned_buffer.rstrip())
-                result = self.shell.execute(cleaned_buffer)
+                result = self.engine.shell.execute(cleaned_buffer)
                 self.render_result(result)
                 self.new_prompt(self.prompt % (result['number'] + 1))
                 self.multi_line_input = False