cpython/Lib/idlelib/EditorWindow.py
Kurt B. Kaiser 220ecbc731 Merge Py Idle changes:
Rev 1.39 GvR
Properly fix SF bug #507298 (Gregor Lingl): shellpython2.2 -Qnew smart
indent error

Use // where int division is intended.  (This breaks IDLE for use with
previous Python versions -- I don't care.)

Rev 1.40 tim_one
Convert a pile of obvious "yes/no" functions to return bool.

Rev 1.41 foffani/loewis
(already merged)  - MS html help

Rev 1.42
(skip, done differently in Idlefork)

Rev 1.43 tzot/rhettinger
Extended IDLE's open module menu item to handle hierarchical module names.
Will look at doing something similar in import.c so that the effort won't
have to be repeated elsewhere.
Closes SF patch 600152.

Rev 1.44 doerwalter
(string methods)
2002-09-16 02:13:15 +00:00

1368 lines
49 KiB
Python

import sys
import os
import re
import imp
from Tkinter import *
import tkSimpleDialog
import tkMessageBox
import webbrowser
import idlever
import WindowList
import SearchDialog
import GrepDialog
import ReplaceDialog
import PyParse
from configHandler import idleConf
import aboutDialog, textView, configDialog
# The default tab setting for a Text widget, in average-width characters.
TK_TABWIDTH_DEFAULT = 8
def _find_module(fullname, path=None):
"""Version of imp.find_module() that handles hierarchical module names"""
file = None
for tgt in fullname.split('.'):
if file is not None:
file.close() # close intermediate files
(file, filename, descr) = imp.find_module(tgt, path)
if descr[2] == imp.PY_SOURCE:
break # find but not load the source file
module = imp.load_module(tgt, file, filename, descr)
path = module.__path__
return file, filename, descr
class EditorWindow:
from Percolator import Percolator
from ColorDelegator import ColorDelegator
from UndoDelegator import UndoDelegator
from IOBinding import IOBinding
import Bindings
from Tkinter import Toplevel
from MultiStatusBar import MultiStatusBar
vars = {}
def __init__(self, flist=None, filename=None, key=None, root=None):
currentTheme=idleConf.CurrentTheme()
self.flist = flist
root = root or flist.root
self.root = root
self.menubar = Menu(root)
self.top = top = self.Toplevel(root, menu=self.menubar)
if flist:
self.vars = flist.vars
#self.top.instanceDict makes flist.inversedict avalable to
#configDialog.py so it can access all EditorWindow instaces
self.top.instanceDict=flist.inversedict
self.recentFilesPath=os.path.join(idleConf.GetUserCfgDir(),
'recent-files.lst')
self.break_set = False
self.vbar = vbar = Scrollbar(top, name='vbar')
self.text_frame = text_frame = Frame(top)
self.text = text = Text(text_frame, name='text', padx=5, wrap=None,
foreground=idleConf.GetHighlight(currentTheme,
'normal',fgBg='fg'),
background=idleConf.GetHighlight(currentTheme,
'normal',fgBg='bg'),
highlightcolor=idleConf.GetHighlight(currentTheme,
'hilite',fgBg='fg'),
highlightbackground=idleConf.GetHighlight(currentTheme,
'hilite',fgBg='bg'),
insertbackground=idleConf.GetHighlight(currentTheme,
'cursor',fgBg='fg'),
width=idleConf.GetOption('main','EditorWindow','width'),
height=idleConf.GetOption('main','EditorWindow','height') )
self.createmenubar()
self.apply_bindings()
self.top.protocol("WM_DELETE_WINDOW", self.close)
self.top.bind("<<close-window>>", self.close_event)
text.bind("<<center-insert>>", self.center_insert_event)
text.bind("<<help>>", self.help_dialog)
text.bind("<<good-advice>>", self.good_advice)
text.bind("<<view-readme>>", self.view_readme)
text.bind("<<python-docs>>", self.python_docs)
text.bind("<<about-idle>>", self.about_dialog)
text.bind("<<open-config-dialog>>", self.config_dialog)
text.bind("<<open-module>>", self.open_module)
text.bind("<<do-nothing>>", lambda event: "break")
text.bind("<<select-all>>", self.select_all)
text.bind("<<remove-selection>>", self.remove_selection)
text.bind("<<find>>", self.find_event)
text.bind("<<find-again>>", self.find_again_event)
text.bind("<<find-in-files>>", self.find_in_files_event)
text.bind("<<find-selection>>", self.find_selection_event)
text.bind("<<replace>>", self.replace_event)
text.bind("<<goto-line>>", self.goto_line_event)
text.bind("<3>", self.right_menu_event)
text.bind("<<smart-backspace>>",self.smart_backspace_event)
text.bind("<<newline-and-indent>>",self.newline_and_indent_event)
text.bind("<<smart-indent>>",self.smart_indent_event)
text.bind("<<indent-region>>",self.indent_region_event)
text.bind("<<dedent-region>>",self.dedent_region_event)
text.bind("<<comment-region>>",self.comment_region_event)
text.bind("<<uncomment-region>>",self.uncomment_region_event)
text.bind("<<tabify-region>>",self.tabify_region_event)
text.bind("<<untabify-region>>",self.untabify_region_event)
text.bind("<<toggle-tabs>>",self.toggle_tabs_event)
text.bind("<<change-indentwidth>>",self.change_indentwidth_event)
if flist:
flist.inversedict[self] = key
if key:
flist.dict[key] = self
text.bind("<<open-new-window>>", self.flist.new_callback)
text.bind("<<close-all-windows>>", self.flist.close_all_callback)
text.bind("<<open-class-browser>>", self.open_class_browser)
text.bind("<<open-path-browser>>", self.open_path_browser)
self.set_status_bar()
vbar['command'] = text.yview
vbar.pack(side=RIGHT, fill=Y)
text['yscrollcommand'] = vbar.set
fontWeight='normal'
if idleConf.GetOption('main','EditorWindow','font-bold',type='bool'):
fontWeight='bold'
text.config(font=(idleConf.GetOption('main','EditorWindow','font'),
idleConf.GetOption('main','EditorWindow','font-size'),
fontWeight))
text_frame.pack(side=LEFT, fill=BOTH, expand=1)
text.pack(side=TOP, fill=BOTH, expand=1)
text.focus_set()
self.per = per = self.Percolator(text)
if self.ispythonsource(filename):
self.color = color = self.ColorDelegator()
per.insertfilter(color)
##print "Initial colorizer"
else:
##print "No initial colorizer"
self.color = None
self.undo = undo = self.UndoDelegator()
per.insertfilter(undo)
text.undo_block_start = undo.undo_block_start
text.undo_block_stop = undo.undo_block_stop
undo.set_saved_change_hook(self.saved_change_hook)
# IOBinding implements file I/O and printing functionality
self.io = io = self.IOBinding(self)
io.set_filename_change_hook(self.filename_change_hook)
#create the Recent Files submenu
self.menuRecentFiles=Menu(self.menubar)
self.menudict['file'].insert_cascade(3,label='Recent Files',
underline=0,menu=self.menuRecentFiles)
self.UpdateRecentFilesList()
if filename:
if os.path.exists(filename):
io.loadfile(filename)
else:
io.set_filename(filename)
self.saved_change_hook()
self.load_extensions()
menu = self.menudict.get('windows')
if menu:
end = menu.index("end")
if end is None:
end = -1
if end >= 0:
menu.add_separator()
end = end + 1
self.wmenu_end = end
WindowList.register_callback(self.postwindowsmenu)
# Some abstractions so IDLE extensions are cross-IDE
self.askyesno = tkMessageBox.askyesno
self.askinteger = tkSimpleDialog.askinteger
self.showerror = tkMessageBox.showerror
if self.extensions.has_key('AutoIndent'):
self.extensions['AutoIndent'].set_indentation_params(
self.ispythonsource(filename))
def set_status_bar(self):
self.status_bar = self.MultiStatusBar(self.top)
self.status_bar.set_label('column', 'Col: ?', side=RIGHT)
self.status_bar.set_label('line', 'Ln: ?', side=RIGHT)
self.status_bar.pack(side=BOTTOM, fill=X)
self.text.bind('<KeyRelease>', self.set_line_and_column)
self.text.bind('<ButtonRelease>', self.set_line_and_column)
self.text.after_idle(self.set_line_and_column)
def set_line_and_column(self, event=None):
line, column = self.text.index(INSERT).split('.')
self.status_bar.set_label('column', 'Col: %s' % column)
self.status_bar.set_label('line', 'Ln: %s' % line)
def wakeup(self):
if self.top.wm_state() == "iconic":
self.top.wm_deiconify()
else:
self.top.tkraise()
self.text.focus_set()
menu_specs = [
("file", "_File"),
("edit", "_Edit"),
("format", "F_ormat"),
("run", "_Run"),
("settings", "_Settings"),
("windows", "_Windows"),
("help", "_Help"),
]
def createmenubar(self):
mbar = self.menubar
self.menudict = menudict = {}
for name, label in self.menu_specs:
underline, label = prepstr(label)
menudict[name] = menu = Menu(mbar, name=name)
mbar.add_cascade(label=label, menu=menu, underline=underline)
self.fill_menus()
#create the ExtraHelp menu, if required
self.ResetExtraHelpMenu()
def postwindowsmenu(self):
# Only called when Windows menu exists
# XXX Actually, this Just-In-Time updating interferes badly
# XXX with the tear-off feature. It would be better to update
# XXX all Windows menus whenever the list of windows changes.
menu = self.menudict['windows']
end = menu.index("end")
if end is None:
end = -1
if end > self.wmenu_end:
menu.delete(self.wmenu_end+1, end)
WindowList.add_windows_to_menu(menu)
rmenu = None
def right_menu_event(self, event):
self.text.tag_remove("sel", "1.0", "end")
self.text.mark_set("insert", "@%d,%d" % (event.x, event.y))
if not self.rmenu:
self.make_rmenu()
rmenu = self.rmenu
self.event = event
iswin = sys.platform[:3] == 'win'
if iswin:
self.text.config(cursor="arrow")
rmenu.tk_popup(event.x_root, event.y_root)
if iswin:
self.text.config(cursor="ibeam")
rmenu_specs = [
# ("Label", "<<virtual-event>>"), ...
("Close", "<<close-window>>"), # Example
]
def make_rmenu(self):
rmenu = Menu(self.text, tearoff=0)
for label, eventname in self.rmenu_specs:
def command(text=self.text, eventname=eventname):
text.event_generate(eventname)
rmenu.add_command(label=label, command=command)
self.rmenu = rmenu
def about_dialog(self, event=None):
aboutDialog.AboutDialog(self.top,'About IDLEfork')
def config_dialog(self, event=None):
configDialog.ConfigDialog(self.top,'Settings')
def good_advice(self, event=None):
tkMessageBox.showinfo('Advice', "Don't Panic!", master=self.text)
def view_readme(self, event=None):
fn=os.path.join(os.path.abspath(os.path.dirname(__file__)),'README.txt')
textView.TextViewer(self.top,'IDLEfork - README',fn)
def help_dialog(self, event=None):
fn=os.path.join(os.path.abspath(os.path.dirname(__file__)),'help.txt')
textView.TextViewer(self.top,'Help',fn)
help_url = "http://www.python.org/doc/current/"
if sys.platform[:3] == "win":
fn = os.path.dirname(__file__)
fn = os.path.join(fn, os.pardir, os.pardir, "pythlp.chm")
fn = os.path.normpath(fn)
if os.path.isfile(fn):
help_url = fn
else:
fn = os.path.dirname(__file__)
fn = os.path.join(fn, os.pardir, os.pardir, "Doc", "index.html")
fn = os.path.normpath(fn)
if os.path.isfile(fn):
help_url = fn
del fn
def python_docs(self, event=None):
os.startfile(self.help_url)
else:
def python_docs(self, event=None):
self.display_docs(self.help_url)
def display_docs(self, url):
webbrowser.open(url)
def select_all(self, event=None):
self.text.tag_add("sel", "1.0", "end-1c")
self.text.mark_set("insert", "1.0")
self.text.see("insert")
return "break"
def remove_selection(self, event=None):
self.text.tag_remove("sel", "1.0", "end")
self.text.see("insert")
def find_event(self, event):
SearchDialog.find(self.text)
return "break"
def find_again_event(self, event):
SearchDialog.find_again(self.text)
return "break"
def find_selection_event(self, event):
SearchDialog.find_selection(self.text)
return "break"
def find_in_files_event(self, event):
GrepDialog.grep(self.text, self.io, self.flist)
return "break"
def replace_event(self, event):
ReplaceDialog.replace(self.text)
return "break"
def goto_line_event(self, event):
text = self.text
lineno = tkSimpleDialog.askinteger("Goto",
"Go to line number:",parent=text)
if lineno is None:
return "break"
if lineno <= 0:
text.bell()
return "break"
text.mark_set("insert", "%d.0" % lineno)
text.see("insert")
def open_module(self, event=None):
# XXX Shouldn't this be in IOBinding or in FileList?
try:
name = self.text.get("sel.first", "sel.last")
except TclError:
name = ""
else:
name = name.strip()
if not name:
name = tkSimpleDialog.askstring("Module",
"Enter the name of a Python module\n"
"to search on sys.path and open:",
parent=self.text)
if name:
name = name.strip()
if not name:
return
# XXX Ought to insert current file's directory in front of path
try:
(f, file, (suffix, mode, type)) = _find_module(name)
except (NameError, ImportError), msg:
tkMessageBox.showerror("Import error", str(msg), parent=self.text)
return
if type != imp.PY_SOURCE:
tkMessageBox.showerror("Unsupported type",
"%s is not a source module" % name, parent=self.text)
return
if f:
f.close()
if self.flist:
self.flist.open(file)
else:
self.io.loadfile(file)
def open_class_browser(self, event=None):
filename = self.io.filename
if not filename:
tkMessageBox.showerror(
"No filename",
"This buffer has no associated filename",
master=self.text)
self.text.focus_set()
return None
head, tail = os.path.split(filename)
base, ext = os.path.splitext(tail)
import ClassBrowser
ClassBrowser.ClassBrowser(self.flist, base, [head])
def open_path_browser(self, event=None):
import PathBrowser
PathBrowser.PathBrowser(self.flist)
def gotoline(self, lineno):
if lineno is not None and lineno > 0:
self.text.mark_set("insert", "%d.0" % lineno)
self.text.tag_remove("sel", "1.0", "end")
self.text.tag_add("sel", "insert", "insert +1l")
self.center()
def ispythonsource(self, filename):
if not filename:
return True
base, ext = os.path.splitext(os.path.basename(filename))
if os.path.normcase(ext) in (".py", ".pyw"):
return True
try:
f = open(filename)
line = f.readline()
f.close()
except IOError:
return False
return line.startswith('#!') and 'python' in line
def close_hook(self):
if self.flist:
self.flist.close_edit(self)
def set_close_hook(self, close_hook):
self.close_hook = close_hook
def filename_change_hook(self):
if self.flist:
self.flist.filename_changed_edit(self)
self.saved_change_hook()
if self.ispythonsource(self.io.filename):
self.addcolorizer()
else:
self.rmcolorizer()
def addcolorizer(self):
if self.color:
return
##print "Add colorizer"
self.per.removefilter(self.undo)
self.color = self.ColorDelegator()
self.per.insertfilter(self.color)
self.per.insertfilter(self.undo)
def rmcolorizer(self):
if not self.color:
return
##print "Remove colorizer"
self.per.removefilter(self.undo)
self.per.removefilter(self.color)
self.color = None
self.per.insertfilter(self.undo)
def ResetColorizer(self):
"Update the colour theme if it is changed"
# Called from configDialog.py
if self.color:
self.color = self.ColorDelegator()
self.per.insertfilter(self.color)
def ResetFont(self):
"Update the text widgets' font if it is changed"
# Called from configDialog.py
fontWeight='normal'
if idleConf.GetOption('main','EditorWindow','font-bold',type='bool'):
fontWeight='bold'
self.text.config(font=(idleConf.GetOption('main','EditorWindow','font'),
idleConf.GetOption('main','EditorWindow','font-size'),
fontWeight))
def ResetKeybindings(self):
"Update the keybindings if they are changed"
# Called from configDialog.py
self.Bindings.default_keydefs=idleConf.GetCurrentKeySet()
keydefs = self.Bindings.default_keydefs
for event, keylist in keydefs.items():
self.text.event_delete(event)
self.apply_bindings()
#update menu accelerators
menuEventDict={}
for menu in self.Bindings.menudefs:
menuEventDict[menu[0]]={}
for item in menu[1]:
if item:
menuEventDict[menu[0]][prepstr(item[0])[1]]=item[1]
for menubarItem in self.menudict.keys():
menu=self.menudict[menubarItem]
end=menu.index(END)+1
for index in range(0,end):
if menu.type(index)=='command':
accel=menu.entrycget(index,'accelerator')
if accel:
itemName=menu.entrycget(index,'label')
event=''
if menuEventDict.has_key(menubarItem):
if menuEventDict[menubarItem].has_key(itemName):
event=menuEventDict[menubarItem][itemName]
if event:
#print 'accel was:',accel
accel=get_accelerator(keydefs, event)
menu.entryconfig(index,accelerator=accel)
#print 'accel now:',accel,'\n'
def ResetExtraHelpMenu(self):
"Load or update the Extra Help menu if required"
menuList=idleConf.GetAllExtraHelpSourcesList()
helpMenu=self.menudict['help']
cascadeIndex=helpMenu.index(END)-1
if menuList:
if not hasattr(self,'menuExtraHelp'):
self.menuExtraHelp=Menu(self.menubar)
helpMenu.insert_cascade(cascadeIndex,label='Extra Help',
underline=1,menu=self.menuExtraHelp)
self.menuExtraHelp.delete(1,END)
for menuItem in menuList:
self.menuExtraHelp.add_command(label=menuItem[0],
command=self.__DisplayExtraHelpCallback(menuItem[1]))
else: #no extra help items
if hasattr(self,'menuExtraHelp'):
helpMenu.delete(cascadeIndex-1)
del(self.menuExtraHelp)
def __DisplayExtraHelpCallback(self,helpFile):
def DisplayExtraHelp(helpFile=helpFile):
self.display_docs(helpFile)
return DisplayExtraHelp
def UpdateRecentFilesList(self,newFile=None):
"Load or update the recent files list, and menu if required"
rfList=[]
if os.path.exists(self.recentFilesPath):
RFfile=open(self.recentFilesPath,'r')
try:
rfList=RFfile.readlines()
finally:
RFfile.close()
if newFile:
newFile=os.path.abspath(newFile)+'\n'
if newFile in rfList:
rfList.remove(newFile)
rfList.insert(0,newFile)
rfList=self.__CleanRecentFiles(rfList)
#print self.flist.inversedict
#print self.top.instanceDict
#print self
if rfList:
for instance in self.top.instanceDict.keys():
instance.menuRecentFiles.delete(1,END)
for file in rfList:
fileName=file[0:-1]
instance.menuRecentFiles.add_command(label=fileName,
command=instance.__RecentFileCallback(fileName))
def __CleanRecentFiles(self,rfList):
origRfList=rfList[:]
count=0
nonFiles=[]
for path in rfList:
if not os.path.exists(path[0:-1]):
nonFiles.append(count)
count=count+1
if nonFiles:
nonFiles.reverse()
for index in nonFiles:
del(rfList[index])
if len(rfList)>19:
rfList=rfList[0:19]
#if rfList != origRfList:
RFfile=open(self.recentFilesPath,'w')
try:
RFfile.writelines(rfList)
finally:
RFfile.close()
return rfList
def __RecentFileCallback(self,fileName):
def OpenRecentFile(fileName=fileName):
self.io.open(editFile=fileName)
return OpenRecentFile
def saved_change_hook(self):
short = self.short_title()
long = self.long_title()
if short and long:
title = short + " - " + long
elif short:
title = short
elif long:
title = long
else:
title = "Untitled"
icon = short or long or title
if not self.get_saved():
title = "*%s*" % title
icon = "*%s" % icon
if self.break_set:
shell = self.flist.pyshell
shell.interp.debugger.clear_file_breaks(self)
self.top.wm_title(title)
self.top.wm_iconname(icon)
def get_saved(self):
return self.undo.get_saved()
def set_saved(self, flag):
self.undo.set_saved(flag)
def reset_undo(self):
self.undo.reset_undo()
def short_title(self):
filename = self.io.filename
if filename:
filename = os.path.basename(filename)
return filename
def long_title(self):
return self.io.filename or ""
def center_insert_event(self, event):
self.center()
def center(self, mark="insert"):
text = self.text
top, bot = self.getwindowlines()
lineno = self.getlineno(mark)
height = bot - top
newtop = max(1, lineno - height//2)
text.yview(float(newtop))
def getwindowlines(self):
text = self.text
top = self.getlineno("@0,0")
bot = self.getlineno("@0,65535")
if top == bot and text.winfo_height() == 1:
# Geometry manager hasn't run yet
height = int(text['height'])
bot = top + height - 1
return top, bot
def getlineno(self, mark="insert"):
text = self.text
return int(float(text.index(mark)))
def close_event(self, event):
self.close()
def maybesave(self):
if self.io:
if not self.get_saved():
if self.top.state()!='normal':
self.top.deiconify()
self.top.lower()
self.top.lift()
return self.io.maybesave()
def close(self):
reply = self.maybesave()
if reply != "cancel":
self._close()
return reply
def _close(self):
#print self.io.filename
if self.io.filename:
self.UpdateRecentFilesList(newFile=self.io.filename)
if self.break_set:
shell = self.flist.pyshell
shell.interp.debugger.clear_file_breaks(self)
WindowList.unregister_callback(self.postwindowsmenu)
if self.close_hook:
self.close_hook()
self.flist = None
colorizing = 0
self.unload_extensions()
self.io.close(); self.io = None
self.undo = None # XXX
if self.color:
colorizing = self.color.colorizing
doh = colorizing and self.top
self.color.close(doh) # Cancel colorization
self.text = None
self.vars = None
self.per.close(); self.per = None
if not colorizing:
self.top.destroy()
def load_extensions(self):
self.extensions = {}
self.load_standard_extensions()
def unload_extensions(self):
for ins in self.extensions.values():
if hasattr(ins, "close"):
ins.close()
self.extensions = {}
def load_standard_extensions(self):
for name in self.get_standard_extension_names():
try:
self.load_extension(name)
except:
print "Failed to load extension", `name`
import traceback
traceback.print_exc()
def get_standard_extension_names(self):
return idleConf.GetExtensions()
def load_extension(self, name):
mod = __import__(name, globals(), locals(), [])
cls = getattr(mod, name)
ins = cls(self)
self.extensions[name] = ins
keydefs=idleConf.GetExtensionBindings(name)
if keydefs:
self.apply_bindings(keydefs)
for vevent in keydefs.keys():
methodname = vevent.replace("-", "_")
while methodname[:1] == '<':
methodname = methodname[1:]
while methodname[-1:] == '>':
methodname = methodname[:-1]
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):
if keydefs is None:
keydefs = self.Bindings.default_keydefs
text = self.text
text.keydefs = keydefs
for event, keylist in keydefs.items():
if keylist:
apply(text.event_add, (event,) + tuple(keylist))
def fill_menus(self, defs=None, keydefs=None):
"""Add appropriate entries to the menus and submenus
Menus that are absent or None in self.menudict are ignored.
"""
if defs is None:
defs = self.Bindings.menudefs
if keydefs is None:
keydefs = self.Bindings.default_keydefs
menudict = self.menudict
text = self.text
for mname, itemlist in defs:
menu = menudict.get(mname)
if not menu:
continue
for item in itemlist:
if not item:
menu.add_separator()
else:
label, event = item
checkbutton = (label[:1] == '!')
if checkbutton:
label = label[1:]
underline, label = prepstr(label)
accelerator = get_accelerator(keydefs, event)
def command(text=text, event=event):
text.event_generate(event)
if checkbutton:
var = self.getrawvar(event, BooleanVar)
menu.add_checkbutton(label=label, underline=underline,
command=command, accelerator=accelerator,
variable=var)
else:
menu.add_command(label=label, underline=underline,
command=command, accelerator=accelerator)
def getvar(self, name):
var = self.getrawvar(name)
if var:
return var.get()
def setvar(self, name, value, vartype=None):
var = self.getrawvar(name, vartype)
if var:
var.set(value)
def getrawvar(self, name, vartype=None):
var = self.vars.get(name)
if not var and vartype:
self.vars[name] = var = vartype(self.text)
return var
# Tk implementations of "virtual text methods" -- each platform
# reusing IDLE's support code needs to define these for its GUI's
# flavor of widget.
# Is character at text_index in a Python string? Return 0 for
# "guaranteed no", true for anything else. This info is expensive
# to compute ab initio, but is probably already known by the
# platform's colorizer.
def is_char_in_string(self, text_index):
if self.color:
# Return true iff colorizer hasn't (re)gotten this far
# yet, or the character is tagged as being in a string
return self.text.tag_prevrange("TODO", text_index) or \
"STRING" in self.text.tag_names(text_index)
else:
# The colorizer is missing: assume the worst
return 1
# If a selection is defined in the text widget, return (start,
# end) as Tkinter text indices, otherwise return (None, None)
def get_selection_indices(self):
try:
first = self.text.index("sel.first")
last = self.text.index("sel.last")
return first, last
except TclError:
return None, None
# Return the text widget's current view of what a tab stop means
# (equivalent width in spaces).
def get_tabwidth(self):
current = self.text['tabs'] or TK_TABWIDTH_DEFAULT
return int(current)
# Set the text widget's current view of what a tab stop means.
def set_tabwidth(self, newtabwidth):
text = self.text
if self.get_tabwidth() != newtabwidth:
pixels = text.tk.call("font", "measure", text["font"],
"-displayof", text.master,
"n" * newtabwidth)
text.configure(tabs=pixels)
### begin autoindent code ###
# usetabs true -> literal tab characters are used by indent and
# dedent cmds, possibly mixed with spaces if
# indentwidth is not a multiple of tabwidth
# false -> tab characters are converted to spaces by indent
# and dedent cmds, and ditto TAB keystrokes
# indentwidth is the number of characters per logical indent level.
# tabwidth is the display width of a literal tab character.
# CAUTION: telling Tk to use anything other than its default
# tab setting causes it to use an entirely different tabbing algorithm,
# treating tab stops as fixed distances from the left margin.
# Nobody expects this, so for now tabwidth should never be changed.
usetabs = 0
indentwidth = 4
tabwidth = 8 # for IDLE use, must remain 8 until Tk is fixed
# If context_use_ps1 is true, parsing searches back for a ps1 line;
# else searches for a popular (if, def, ...) Python stmt.
context_use_ps1 = 0
# When searching backwards for a reliable place to begin parsing,
# first start num_context_lines[0] lines back, then
# num_context_lines[1] lines back if that didn't work, and so on.
# The last value should be huge (larger than the # of lines in a
# conceivable file).
# Making the initial values larger slows things down more often.
num_context_lines = 50, 500, 5000000
def config(self, **options):
for key, value in options.items():
if key == 'usetabs':
self.usetabs = value
elif key == 'indentwidth':
self.indentwidth = value
elif key == 'tabwidth':
self.tabwidth = value
elif key == 'context_use_ps1':
self.context_use_ps1 = value
else:
raise KeyError, "bad option name: %s" % `key`
# If ispythonsource and guess are true, guess a good value for
# indentwidth based on file content (if possible), and if
# indentwidth != tabwidth set usetabs false.
# In any case, adjust the Text widget's view of what a tab
# character means.
def set_indentation_params(self, ispythonsource, guess=1):
if guess and ispythonsource:
i = self.guess_indent()
if 2 <= i <= 8:
self.indentwidth = i
if self.indentwidth != self.tabwidth:
self.usetabs = 0
self.set_tabwidth(self.tabwidth)
def smart_backspace_event(self, event):
text = self.text
first, last = self.get_selection_indices()
if first and last:
text.delete(first, last)
text.mark_set("insert", first)
return "break"
# Delete whitespace left, until hitting a real char or closest
# preceding virtual tab stop.
chars = text.get("insert linestart", "insert")
if chars == '':
if text.compare("insert", ">", "1.0"):
# easy: delete preceding newline
text.delete("insert-1c")
else:
text.bell() # at start of buffer
return "break"
if chars[-1] not in " \t":
# easy: delete preceding real char
text.delete("insert-1c")
return "break"
# Ick. It may require *inserting* spaces if we back up over a
# tab character! This is written to be clear, not fast.
tabwidth = self.tabwidth
have = len(chars.expandtabs(tabwidth))
assert have > 0
want = ((have - 1) // self.indentwidth) * self.indentwidth
ncharsdeleted = 0
while 1:
chars = chars[:-1]
ncharsdeleted = ncharsdeleted + 1
have = len(chars.expandtabs(tabwidth))
if have <= want or chars[-1] not in " \t":
break
text.undo_block_start()
text.delete("insert-%dc" % ncharsdeleted, "insert")
if have < want:
text.insert("insert", ' ' * (want - have))
text.undo_block_stop()
return "break"
def smart_indent_event(self, event):
# if intraline selection:
# delete it
# elif multiline selection:
# do indent-region & return
# indent one level
text = self.text
first, last = self.get_selection_indices()
text.undo_block_start()
try:
if first and last:
if index2line(first) != index2line(last):
return self.indent_region_event(event)
text.delete(first, last)
text.mark_set("insert", first)
prefix = text.get("insert linestart", "insert")
raw, effective = classifyws(prefix, self.tabwidth)
if raw == len(prefix):
# only whitespace to the left
self.reindent_to(effective + self.indentwidth)
else:
if self.usetabs:
pad = '\t'
else:
effective = len(prefix.expandtabs(self.tabwidth))
n = self.indentwidth
pad = ' ' * (n - effective % n)
text.insert("insert", pad)
text.see("insert")
return "break"
finally:
text.undo_block_stop()
def newline_and_indent_event(self, event):
text = self.text
first, last = self.get_selection_indices()
text.undo_block_start()
try:
if first and last:
text.delete(first, last)
text.mark_set("insert", first)
line = text.get("insert linestart", "insert")
i, n = 0, len(line)
while i < n and line[i] in " \t":
i = i+1
if i == n:
# the cursor is in or at leading indentation; just inject
# an empty line at the start
text.insert("insert linestart", '\n')
return "break"
indent = line[:i]
# strip whitespace before insert point
i = 0
while line and line[-1] in " \t":
line = line[:-1]
i = i+1
if i:
text.delete("insert - %d chars" % i, "insert")
# strip whitespace after insert point
while text.get("insert") in " \t":
text.delete("insert")
# start new line
text.insert("insert", '\n')
# adjust indentation for continuations and block
# open/close first need to find the last stmt
lno = index2line(text.index('insert'))
y = PyParse.Parser(self.indentwidth, self.tabwidth)
for context in self.num_context_lines:
startat = max(lno - context, 1)
startatindex = `startat` + ".0"
rawtext = text.get(startatindex, "insert")
y.set_str(rawtext)
bod = y.find_good_parse_start(
self.context_use_ps1,
self._build_char_in_string_func(startatindex))
if bod is not None or startat == 1:
break
y.set_lo(bod or 0)
c = y.get_continuation_type()
if c != PyParse.C_NONE:
# The current stmt hasn't ended yet.
if c == PyParse.C_STRING:
# inside a string; just mimic the current indent
text.insert("insert", indent)
elif c == PyParse.C_BRACKET:
# line up with the first (if any) element of the
# last open bracket structure; else indent one
# level beyond the indent of the line with the
# last open bracket
self.reindent_to(y.compute_bracket_indent())
elif c == PyParse.C_BACKSLASH:
# if more than one line in this stmt already, just
# mimic the current indent; else if initial line
# has a start on an assignment stmt, indent to
# beyond leftmost =; else to beyond first chunk of
# non-whitespace on initial line
if y.get_num_lines_in_stmt() > 1:
text.insert("insert", indent)
else:
self.reindent_to(y.compute_backslash_indent())
else:
assert 0, "bogus continuation type " + `c`
return "break"
# This line starts a brand new stmt; indent relative to
# indentation of initial line of closest preceding
# interesting stmt.
indent = y.get_base_indent_string()
text.insert("insert", indent)
if y.is_block_opener():
self.smart_indent_event(event)
elif indent and y.is_block_closer():
self.smart_backspace_event(event)
return "break"
finally:
text.see("insert")
text.undo_block_stop()
auto_indent = newline_and_indent_event
# Our editwin provides a is_char_in_string function that works
# with a Tk text index, but PyParse only knows about offsets into
# a string. This builds a function for PyParse that accepts an
# offset.
def _build_char_in_string_func(self, startindex):
def inner(offset, _startindex=startindex,
_icis=self.is_char_in_string):
return _icis(_startindex + "+%dc" % offset)
return inner
def indent_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if line:
raw, effective = classifyws(line, self.tabwidth)
effective = effective + self.indentwidth
lines[pos] = self._make_blanks(effective) + line[raw:]
self.set_region(head, tail, chars, lines)
return "break"
def dedent_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if line:
raw, effective = classifyws(line, self.tabwidth)
effective = max(effective - self.indentwidth, 0)
lines[pos] = self._make_blanks(effective) + line[raw:]
self.set_region(head, tail, chars, lines)
return "break"
def comment_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines) - 1):
line = lines[pos]
lines[pos] = '##' + line
self.set_region(head, tail, chars, lines)
def uncomment_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if not line:
continue
if line[:2] == '##':
line = line[2:]
elif line[:1] == '#':
line = line[1:]
lines[pos] = line
self.set_region(head, tail, chars, lines)
def tabify_region_event(self, event):
head, tail, chars, lines = self.get_region()
tabwidth = self._asktabwidth()
for pos in range(len(lines)):
line = lines[pos]
if line:
raw, effective = classifyws(line, tabwidth)
ntabs, nspaces = divmod(effective, tabwidth)
lines[pos] = '\t' * ntabs + ' ' * nspaces + line[raw:]
self.set_region(head, tail, chars, lines)
def untabify_region_event(self, event):
head, tail, chars, lines = self.get_region()
tabwidth = self._asktabwidth()
for pos in range(len(lines)):
lines[pos] = lines[pos].expandtabs(tabwidth)
self.set_region(head, tail, chars, lines)
def toggle_tabs_event(self, event):
if self.askyesno(
"Toggle tabs",
"Turn tabs " + ("on", "off")[self.usetabs] + "?",
parent=self.text):
self.usetabs = not self.usetabs
return "break"
# XXX this isn't bound to anything -- see class tabwidth comments
def change_tabwidth_event(self, event):
new = self._asktabwidth()
if new != self.tabwidth:
self.tabwidth = new
self.set_indentation_params(0, guess=0)
return "break"
def change_indentwidth_event(self, event):
new = self.askinteger(
"Indent width",
"New indent width (2-16)",
parent=self.text,
initialvalue=self.indentwidth,
minvalue=2,
maxvalue=16)
if new and new != self.indentwidth:
self.indentwidth = new
return "break"
def get_region(self):
text = self.text
first, last = self.get_selection_indices()
if first and last:
head = text.index(first + " linestart")
tail = text.index(last + "-1c lineend +1c")
else:
head = text.index("insert linestart")
tail = text.index("insert lineend +1c")
chars = text.get(head, tail)
lines = chars.split("\n")
return head, tail, chars, lines
def set_region(self, head, tail, chars, lines):
text = self.text
newchars = "\n".join(lines)
if newchars == chars:
text.bell()
return
text.tag_remove("sel", "1.0", "end")
text.mark_set("insert", head)
text.undo_block_start()
text.delete(head, tail)
text.insert(head, newchars)
text.undo_block_stop()
text.tag_add("sel", head, "insert")
# Make string that displays as n leading blanks.
def _make_blanks(self, n):
if self.usetabs:
ntabs, nspaces = divmod(n, self.tabwidth)
return '\t' * ntabs + ' ' * nspaces
else:
return ' ' * n
# Delete from beginning of line to insert point, then reinsert
# column logical (meaning use tabs if appropriate) spaces.
def reindent_to(self, column):
text = self.text
text.undo_block_start()
if text.compare("insert linestart", "!=", "insert"):
text.delete("insert linestart", "insert")
if column:
text.insert("insert", self._make_blanks(column))
text.undo_block_stop()
def _asktabwidth(self):
return self.askinteger(
"Tab width",
"Spaces per tab? (2-16)",
parent=self.text,
initialvalue=self.indentwidth,
minvalue=2,
maxvalue=16) or self.tabwidth
# Guess indentwidth from text content.
# Return guessed indentwidth. This should not be believed unless
# it's in a reasonable range (e.g., it will be 0 if no indented
# blocks are found).
def guess_indent(self):
opener, indented = IndentSearcher(self.text, self.tabwidth).run()
if opener and indented:
raw, indentsmall = classifyws(opener, self.tabwidth)
raw, indentlarge = classifyws(indented, self.tabwidth)
else:
indentsmall = indentlarge = 0
return indentlarge - indentsmall
# "line.col" -> line, as an int
def index2line(index):
return int(float(index))
# Look at the leading whitespace in s.
# Return pair (# of leading ws characters,
# effective # of leading blanks after expanding
# tabs to width tabwidth)
def classifyws(s, tabwidth):
raw = effective = 0
for ch in s:
if ch == ' ':
raw = raw + 1
effective = effective + 1
elif ch == '\t':
raw = raw + 1
effective = (effective // tabwidth + 1) * tabwidth
else:
break
return raw, effective
import tokenize
_tokenize = tokenize
del tokenize
class IndentSearcher:
# .run() chews over the Text widget, looking for a block opener
# and the stmt following it. Returns a pair,
# (line containing block opener, line containing stmt)
# Either or both may be None.
def __init__(self, text, tabwidth):
self.text = text
self.tabwidth = tabwidth
self.i = self.finished = 0
self.blkopenline = self.indentedline = None
def readline(self):
if self.finished:
return ""
i = self.i = self.i + 1
mark = `i` + ".0"
if self.text.compare(mark, ">=", "end"):
return ""
return self.text.get(mark, mark + " lineend+1c")
def tokeneater(self, type, token, start, end, line,
INDENT=_tokenize.INDENT,
NAME=_tokenize.NAME,
OPENERS=('class', 'def', 'for', 'if', 'try', 'while')):
if self.finished:
pass
elif type == NAME and token in OPENERS:
self.blkopenline = line
elif type == INDENT and self.blkopenline:
self.indentedline = line
self.finished = 1
def run(self):
save_tabsize = _tokenize.tabsize
_tokenize.tabsize = self.tabwidth
try:
try:
_tokenize.tokenize(self.readline, self.tokeneater)
except _tokenize.TokenError:
# since we cut off the tokenizer early, we can trigger
# spurious errors
pass
finally:
_tokenize.tabsize = save_tabsize
return self.blkopenline, self.indentedline
### end autoindent code ###
def prepstr(s):
# Helper to extract the underscore from a string, e.g.
# prepstr("Co_py") returns (2, "Copy").
i = s.find('_')
if i >= 0:
s = s[:i] + s[i+1:]
return i, s
keynames = {
'bracketleft': '[',
'bracketright': ']',
'slash': '/',
}
def get_accelerator(keydefs, event):
keylist = keydefs.get(event)
if not keylist:
return ""
s = keylist[0]
s = re.sub(r"-[a-z]\b", lambda m: m.group().upper(), s)
s = re.sub(r"\b\w+\b", lambda m: keynames.get(m.group(), m.group()), s)
s = re.sub("Key-", "", s)
s = re.sub("Cancel","Ctrl-Break",s) # dscherer@cmu.edu
s = re.sub("Control-", "Ctrl-", s)
s = re.sub("-", "+", s)
s = re.sub("><", " ", s)
s = re.sub("<", "", s)
s = re.sub(">", "", s)
return s
def fixwordbreaks(root):
# Make sure that Tk's double-click and next/previous word
# operations use our definition of a word (i.e. an identifier)
tk = root.tk
tk.call('tcl_wordBreakAfter', 'a b', 0) # make sure word.tcl is loaded
tk.call('set', 'tcl_wordchars', '[a-zA-Z0-9_]')
tk.call('set', 'tcl_nonwordchars', '[^a-zA-Z0-9_]')
def test():
root = Tk()
fixwordbreaks(root)
root.withdraw()
if sys.argv[1:]:
filename = sys.argv[1]
else:
filename = None
edit = EditorWindow(root=root, filename=filename)
edit.set_close_hook(root.quit)
root.mainloop()
root.destroy()
if __name__ == '__main__':
test()