Noam Raphel: Further developemt of CodeContext feature.

The visibility state of the code context pane is now persistent between
sessions and the pane does not appear in the shell window.

M CodeContext.py
M EditorWindow.py
M NEWS.txt
M PyShell.py
M config-extensions.def
M configHandler.py

Lib/idlelib/CodeContext.py

 """CodeContext - Display the block context of code at top of edit window
 
-Once code has scolled off the top of the screen, it can be difficult
+Once code has scrolled off the top of the screen, it can be difficult
 to determine which block you are in.  This extension implements a pane
 at the top of each IDLE edit window which provides block structure
 hints.  These hints are the lines which contain the block opening
@@ -12,12 +12,11 @@ the context hints pane.
 """
 import Tkinter
 from configHandler import idleConf
-from PyShell import PyShell
+from sets import Set
 import re
 
-BLOCKOPENERS = dict([(x, None) for x in ("class", "def", "elif", "else",
-                                         "except", "finally", "for", "if",
-                                         "try", "while")])
+BLOCKOPENERS = Set(["class", "def", "elif", "else", "except", "finally", "for",
+                    "if", "try", "while"])
 INFINITY = 1 << 30
 UPDATEINTERVAL = 100 # millisec
 FONTUPDATEINTERVAL = 1000 # millisec
@@ -33,11 +32,7 @@ class CodeContext:
                                  "bgcolor", type="str", default="LightGray")
     fgcolor = idleConf.GetOption("extensions", "CodeContext",
                                  "fgcolor", type="str", default="Black")
-    default_on = idleConf.GetOption("extensions", "CodeContext",
-                                    "default_on", type="int", default=0)
     def __init__(self, editwin):
-        if isinstance(editwin, PyShell):
-            return
         self.editwin = editwin
         self.text = editwin.text
         self.textfont = self.text["font"]
@@ -45,7 +40,9 @@ class CodeContext:
         # Dummy line, which starts the "block" of the whole document:
         self.info = list(self.interesting_lines(1))
         self.lastfirstline = 1
-        if self.default_on:
+        visible = idleConf.GetOption("extensions", "CodeContext",
+                                     "visible", type="bool", default=False)
+        if visible:
             self.toggle_code_context_event()
             self.editwin.setvar('<<toggle-code-context>>', True)
         # Start two update cycles, one for context lines, one for font changes.
@@ -67,6 +64,9 @@ class CodeContext:
         else:
             self.label.destroy()
             self.label = None
+        idleConf.SetOption("extensions", "CodeContext", "visible",
+                           str(self.label is not None))
+        idleConf.SaveUserCfgFiles()
 
     def get_line_info(self, linenum):
         """Get the line indent value, text, and any block start keyword

Lib/idlelib/EditorWindow.py

@@ -751,14 +751,16 @@ class EditorWindow:
                 traceback.print_exc()
 
     def get_standard_extension_names(self):
-        return idleConf.GetExtensions()
+        return idleConf.GetExtensions(editor_only=True)
 
     def load_extension(self, name):
         mod = __import__(name, globals(), locals(), [])
         cls = getattr(mod, name)
+        keydefs = idleConf.GetExtensionBindings(name)
+        if hasattr(cls, "menudefs"):
+            self.fill_menus(cls.menudefs, keydefs)
         ins = cls(self)
         self.extensions[name] = ins
-        keydefs=idleConf.GetExtensionBindings(name)
         if keydefs:
             self.apply_bindings(keydefs)
             for vevent in keydefs.keys():
@@ -770,8 +772,6 @@ class EditorWindow:
                 methodname = methodname + "_event"
                 if hasattr(ins, methodname):
                     self.text.bind(vevent, getattr(ins, methodname))
-        if hasattr(ins, "menudefs"):
-            self.fill_menus(ins.menudefs, keydefs)
         return ins
 
     def apply_bindings(self, keydefs=None):

Lib/idlelib/NEWS.txt

 What's New in IDLE 1.1a0?
-===================================
+=========================
 
 *Release date: XX-XXX-2004*
 
+- CodeContext hint pane visibility state is now persistent across sessions.
+  The pane no longer appears in the shell window.  Added capability to limit
+  extensions to shell window or editor windows.  Noam Raphael addition
+  to Patch 936169.
+
+- Paragraph reformat width is now a configurable parameter in the
+  Options GUI.
+
 - New Extension: CodeContext.  Provides block structuring hints for code
   which has scrolled above an edit window. Patch 936169 Noam Raphael.
 
@@ -52,7 +60,7 @@ What's New in IDLE 1.1a0?
 
 
 What's New in IDLE 1.0?
-===================================
+=======================
 
 *Release date: 29-Jul-2003*
 
@@ -61,7 +69,7 @@ What's New in IDLE 1.0?
 
 
 What's New in IDLE 1.0 release candidate 2?
-===================================
+===========================================
 
 *Release date: 24-Jul-2003*
 
@@ -69,7 +77,7 @@ What's New in IDLE 1.0 release candidate 2?
 
 
 What's New in IDLE 1.0 release candidate 1?
-===================================
+===========================================
 
 *Release date: 18-Jul-2003*
 
@@ -90,7 +98,7 @@ What's New in IDLE 1.0 release candidate 1?
 
 
 What's New in IDLE 1.0b2?
-===================================
+=========================
 
 *Release date: 29-Jun-2003*
 
@@ -131,7 +139,7 @@ What's New in IDLE 1.0b2?
 
 
 What's New in IDLEfork 0.9b1?
-===================================
+=============================
 
 *Release date: 02-Jun-2003*
 

Lib/idlelib/PyShell.py

@@ -806,6 +806,9 @@ class PyShell(OutputWindow):
         #
         self.pollinterval = 50  # millisec
 
+    def get_standard_extension_names(self):
+        return idleConf.GetExtensions(shell_only=True)
+
     reading = False
     executing = False
     canceled = False

Lib/idlelib/config-extensions.def

+# config-extensions.def
+#
 # IDLE reads several config files to determine user preferences.  This
 # file is the default configuration file for IDLE extensions settings.
 #
 # Each extension must have at least one section, named after the extension
 # module. This section must contain an 'enable' item (=1 to enable the
-# extension, =0 to disable it) and also contain any other general configuration
-# items for the extension. Each extension must define at least one section
-# named ExtensionName_bindings or ExtensionName_cfgBindings. If present,
-# ExtensionName_bindings defines virtual event bindings for the extension that
-# are not user re-configurable. If present, ExtensionName_cfgBindings
-# defines virtual event bindings for the extension that may be sensibly
-# re-configured.  If there are no keybindings for a menus' virtual events,
-# include lines like <<toggle-code-context>>=   (See [CodeContext], below.)
-
+# extension, =0 to disable it), it may contain 'enable_editor' or 'enable_shell'
+# items, to apply it only to editor/shell windows, and may also contain any
+# other general configuration items for the extension.
+#
+# Each extension must define at least one section named ExtensionName_bindings
+# or ExtensionName_cfgBindings. If present, ExtensionName_bindings defines
+# virtual event bindings for the extension that are not user re-configurable.
+# If present, ExtensionName_cfgBindings defines virtual event bindings for the
+# extension that may be sensibly re-configured.
+#
+# If there are no keybindings for a menus' virtual events, include lines like
+# <<toggle-code-context>>=   (See [CodeContext], below.)
+#
 # Currently it is necessary to manually modify this file to change extension
 # key bindings and default values. To customize, create
 # ~/.idlerc/config-extensions.cfg and append the appropriate customized
 # section(s).  Those sections will override the defaults in this file.
-
+#
 # Note: If a keybinding is already in use when the extension is
 # loaded, the extension's virtual event's keybinding will be set to ''.
-
+#
 # See config-keys.def for notes on specifying keys and extend.txt for
 # information on creating IDLE extensions.
 
@@ -65,8 +71,9 @@ check-restore=<KeyPress>
 
 [CodeContext]
 enable=1
+enable_shell=0
 numlines=3
-default_on=0
+visible=0
 bgcolor=LightGray
 fgcolor=Black
 [CodeContext_bindings]

Lib/idlelib/configHandler.py

@@ -215,7 +215,8 @@ class IdleConf:
                 sys.stderr.write(warn)
         return userDir
 
-    def GetOption(self, configType, section, option, default=None, type=None):
+    def GetOption(self, configType, section, option, default=None, type=None,
+                  warn_on_default=True):
         """
         Get an option value for given config type and given general
         configuration section/option or return a default. If type is specified,
@@ -224,21 +225,30 @@ class IdleConf:
         fallback to a useable passed-in default if the option isn't present in
         either the user or the default configuration.
         configType must be one of ('main','extensions','highlight','keys')
-        If a default is returned a warning is printed to stderr.
+        If a default is returned, and warn_on_default is True, a warning is
+        printed to stderr.
+
         """
         if self.userCfg[configType].has_option(section,option):
             return self.userCfg[configType].Get(section, option, type=type)
         elif self.defaultCfg[configType].has_option(section,option):
             return self.defaultCfg[configType].Get(section, option, type=type)
         else: #returning default, print warning
-            warning=('\n Warning: configHandler.py - IdleConf.GetOption -\n'
-                       ' problem retrieving configration option %r\n'
-                       ' from section %r.\n'
-                       ' returning default value: %r\n' % 
-                       (option, section, default))
-            sys.stderr.write(warning)
+            if warn_on_default:
+                warning = ('\n Warning: configHandler.py - IdleConf.GetOption -\n'
+                           ' problem retrieving configration option %r\n'
+                           ' from section %r.\n'
+                           ' returning default value: %r\n' %
+                           (option, section, default))
+                sys.stderr.write(warning)
             return default
 
+    def SetOption(self, configType, section, option, value):
+        """In user's config file, set section's option to value.
+
+        """
+        self.userCfg[configType].SetOption(section, option, value)
+
     def GetSectionList(self, configSet, configType):
         """
         Get a list of sections from either the user or default config for
@@ -356,10 +366,10 @@ class IdleConf:
         """
         return self.GetOption('main','Keys','name',default='')
 
-    def GetExtensions(self, activeOnly=1):
+    def GetExtensions(self, active_only=True, editor_only=False, shell_only=False):
         """
         Gets a list of all idle extensions declared in the config files.
-        activeOnly - boolean, if true only return active (enabled) extensions
+        active_only - boolean, if true only return active (enabled) extensions
         """
         extns=self.RemoveKeyBindNames(
                 self.GetSectionList('default','extensions'))
@@ -368,13 +378,23 @@ class IdleConf:
         for extn in userExtns:
             if extn not in extns: #user has added own extension
                 extns.append(extn)
-        if activeOnly:
+        if active_only:
             activeExtns=[]
             for extn in extns:
-                if self.GetOption('extensions',extn,'enable',default=1,
-                    type='bool'):
+                if self.GetOption('extensions', extn, 'enable', default=True,
+                                  type='bool'):
                     #the extension is enabled
-                    activeExtns.append(extn)
+                    if editor_only or shell_only:
+                        if editor_only:
+                            option = "enable_editor"
+                        else:
+                            option = "enable_shell"
+                        if self.GetOption('extensions', extn,option,
+                                          default=True, type='bool',
+                                          warn_on_default=False):
+                            activeExtns.append(extn)
+                    else:
+                        activeExtns.append(extn)
             return activeExtns
         else:
             return extns
@@ -401,7 +421,7 @@ class IdleConf:
         """
         extName=None
         vEvent='<<'+virtualEvent+'>>'
-        for extn in self.GetExtensions(activeOnly=0):
+        for extn in self.GetExtensions(active_only=0):
             for event in self.GetExtensionKeys(extn).keys():
                 if event == vEvent:
                     extName=extn
@@ -482,7 +502,7 @@ class IdleConf:
         in an extension is already in use, that binding is disabled.
         """
         keySet=self.GetCoreKeys(keySetName)
-        activeExtns=self.GetExtensions(activeOnly=1)
+        activeExtns=self.GetExtensions(active_only=1)
         for extn in activeExtns:
             extKeys=self.__GetRawExtensionKeys(extn)
             if extKeys: #the extension defines keybindings