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Code Issues Projects Releases Packages Wiki Activity Actions 11

1. Add an Options menu entry: Code Context

Browse source 
2. Add a <<toggle-code-context>> envent to the [CodeContext] section of
   config-extensions.def and also a default-on variable, set to 0.
3. Update the help file to include Code Context.

M CodeContext.py
M config-extensions.def
M help.txt
This commit is contained in:
Kurt B. Kaiser 2004-04-24 03:08:13 +00:00
parent 610c7e07f3
commit d00587a2ed
3 changed files with 43 additions and 27 deletions
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46
Lib/idlelib/CodeContext.py
View file

@ -13,49 +13,61 @@ the context hints pane.
import Tkinter
from configHandler import idleConf
from PyShell import PyShell
from string import whitespace
import re
BLOCKOPENERS = dict([(x, None) for x in ("class", "def", "elif", "else",
"except", "finally", "for", "if",
"try", "while")])
INFINITY = 1 << 30
UPDATEINTERVAL = 100 #ms
FONTUPDATEINTERVAL = 1000 #ms
UPDATEINTERVAL = 100 # millisec
FONTUPDATEINTERVAL = 1000 # millisec
getspacesfirstword = lambda s, c=re.compile(r"^(\s*)(\w*)"): c.match(s).groups()
class CodeContext:
menudefs = []
menudefs = [('options', [('!Code Conte_xt', '<<toggle-code-context>>')])]
numlines = idleConf.GetOption("extensions", "CodeContext",
"numlines", type="int", default=3)
bgcolor = idleConf.GetOption("extensions", "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"]
self.label = Tkinter.Label(self.editwin.top,
text="\n" * (self.numlines - 1),
anchor="w", justify="left",
font=self.textfont,
bg=self.bgcolor, fg=self.fgcolor,
relief="sunken",
width=1, # Don't request more than we get
)
self.label.pack(side="top", fill="x", expand=0,
after=self.editwin.status_bar)
self.label = None
# Dummy line, which starts the "block" of the whole document:
self.info = list(self.interesting_lines(1))
self.lastfirstline = 1
if self.default_on:
self.toggle_code_context_event()
self.editwin.setvar('<<toggle-code-context>>', True)
# Start two update cycles, one for context lines, one for font changes.
self.text.after(UPDATEINTERVAL, self.timer_event)
self.text.after(FONTUPDATEINTERVAL, self.font_timer_event)
def toggle_code_context_event(self, event=None):
if not self.label:
self.label = Tkinter.Label(self.editwin.top,
text="\n" * (self.numlines - 1),
anchor="w", justify="left",
font=self.textfont,
bg=self.bgcolor, fg=self.fgcolor,
relief="sunken",
width=1, # Don't request more than we get
)
self.label.pack(side="top", fill="x", expand=0,
after=self.editwin.status_bar)
else:
self.label.destroy()
self.label = None
def get_line_info(self, linenum):
"""Get the line indent value, text, and any block start keyword
@ -107,7 +119,6 @@ class CodeContext:
del self.info[-1]
if self.info[-1][0] == line_index:
break
# Add the block starting line info to tmpstack
tmpstack.append((line_index, text))
while tmpstack:
self.info.append(tmpstack.pop())
@ -116,12 +127,13 @@ class CodeContext:
self.label["text"] = '\n'.join(lines)
def timer_event(self):
self.update_label()
if self.label:
self.update_label()
self.text.after(UPDATEINTERVAL, self.timer_event)
def font_timer_event(self):
newtextfont = self.text["font"]
if newtextfont != self.textfont:
if self.label and newtextfont != self.textfont:
self.textfont = newtextfont
self.label["font"] = self.textfont
self.text.after(FONTUPDATEINTERVAL, self.font_timer_event)

18
Lib/idlelib/config-extensions.def
View file

@ -3,13 +3,14 @@
#
# 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 may also define up to
# two optional sections named ExtensionName_bindings and
# ExtensionName_cfgBindings. If present, ExtensionName_bindings defines virtual
# event bindings for the extension that are not sensibly re-configurable. If
# present, ExtensionName_cfgBindings defines virtual event bindings for the
# extension that may be sensibly re-configured.
# 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.)
# Currently it is necessary to manually modify this file to change extension
# key bindings and default values. To customize, create
@ -65,5 +66,8 @@ check-restore=<KeyPress>
[CodeContext]
enable=1
numlines=3
default_on=0
bgcolor=LightGray
fgcolor=Black
[CodeContext_bindings]
toggle-code-context=

6
Lib/idlelib/help.txt
View file

@ -88,9 +88,9 @@ Options Menu:
Startup Preferences may be set, and Additional Help
Souces can be specified.
---
Revert to Default Settings -- Restore original settings. Not
currently implemented - simply delete
your .idlerc file.
Code Context -- Open a pane at the top of the edit window which
shows the block context of the section of code
which is scrolling off the top or the window.
Windows Menu: