import importlib.abc
import importlib.util
import os
import platform
import re
import string
import sys
import tokenize
import traceback
import webbrowser
from tkinter import *
from tkinter.font import Font
from tkinter.ttk import Scrollbar
from tkinter import simpledialog
from tkinter import messagebox
from idlelib.config import idleConf
from idlelib import configdialog
from idlelib import grep
from idlelib import help
from idlelib import help_about
from idlelib import macosx
from idlelib.multicall import MultiCallCreator
from idlelib import pyparse
from idlelib import query
from idlelib import replace
from idlelib import search
from idlelib.tree import wheel_event
from idlelib.util import py_extensions
from idlelib import window
# The default tab setting for a Text widget, in average-width characters.
TK_TABWIDTH_DEFAULT = 8
_py_version = ' (%s)' % platform.python_version()
darwin = sys.platform == 'darwin'
def _sphinx_version():
"Format sys.version_info to produce the Sphinx version string used to install the chm docs"
major, minor, micro, level, serial = sys.version_info
# TODO remove unneeded function since .chm no longer installed
release = f'{major}{minor}'
release += f'{micro}'
if level == 'candidate':
release += f'rc{serial}'
elif level != 'final':
release += f'{level[0]}{serial}'
return release
class EditorWindow:
from idlelib.percolator import Percolator
from idlelib.colorizer import ColorDelegator, color_config
from idlelib.undo import UndoDelegator
from idlelib.iomenu import IOBinding, encoding
from idlelib import mainmenu
from idlelib.statusbar import MultiStatusBar
from idlelib.autocomplete import AutoComplete
from idlelib.autoexpand import AutoExpand
from idlelib.calltip import Calltip
from idlelib.codecontext import CodeContext
from idlelib.sidebar import LineNumbers
from idlelib.format import FormatParagraph, FormatRegion, Indents, Rstrip
from idlelib.parenmatch import ParenMatch
from idlelib.zoomheight import ZoomHeight
filesystemencoding = sys.getfilesystemencoding() # for file names
help_url = None
allow_code_context = True
allow_line_numbers = True
user_input_insert_tags = None
def __init__(self, flist=None, filename=None, key=None, root=None):
# Delay import: runscript imports pyshell imports EditorWindow.
from idlelib.runscript import ScriptBinding
if EditorWindow.help_url is None:
dochome = os.path.join(sys.base_prefix, 'Doc', 'index.html')
if sys.platform.count('linux'):
# look for html docs in a couple of standard places
pyver = 'python-docs-' + '%s.%s.%s' % sys.version_info[:3]
if os.path.isdir('/var/www/html/python/'): # "python2" rpm
dochome = '/var/www/html/python/index.html'
else:
basepath = '/usr/share/doc/' # standard location
dochome = os.path.join(basepath, pyver,
'Doc', 'index.html')
elif sys.platform[:3] == 'win':
import winreg # Windows only, block only executed once.
docfile = ''
KEY = (rf"Software\Python\PythonCore\{sys.winver}"
r"\Help\Main Python Documentation")
try:
docfile = winreg.QueryValue(winreg.HKEY_CURRENT_USER, KEY)
except FileNotFoundError:
try:
docfile = winreg.QueryValue(winreg.HKEY_LOCAL_MACHINE,
KEY)
except FileNotFoundError:
pass
if os.path.isfile(docfile):
dochome = docfile
elif sys.platform == 'darwin':
# documentation may be stored inside a python framework
dochome = os.path.join(sys.base_prefix,
'Resources/English.lproj/Documentation/index.html')
dochome = os.path.normpath(dochome)
if os.path.isfile(dochome):
EditorWindow.help_url = dochome
if sys.platform == 'darwin':
# Safari requires real file:-URLs
EditorWindow.help_url = 'file://' + EditorWindow.help_url
else:
EditorWindow.help_url = ("https://docs.python.org/%d.%d/"
% sys.version_info[:2])
self.flist = flist
root = root or flist.root
self.root = root
self.menubar = Menu(root)
self.top = top = window.ListedToplevel(root, menu=self.menubar)
if flist:
self.tkinter_vars = flist.vars
#self.top.instance_dict makes flist.inversedict available to
#configdialog.py so it can access all EditorWindow instances
self.top.instance_dict = flist.inversedict
else:
self.tkinter_vars = {} # keys: Tkinter event names
# values: Tkinter variable instances
self.top.instance_dict = {}
self.recent_files_path = idleConf.userdir and os.path.join(
idleConf.userdir, 'recent-files.lst')
self.prompt_last_line = '' # Override in PyShell
self.text_frame = text_frame = Frame(top)
self.vbar = vbar = Scrollbar(text_frame, name='vbar')
width = idleConf.GetOption('main', 'EditorWindow', 'width', type='int')
text_options = {
'name': 'text',
'padx': 5,
'wrap': 'none',
'highlightthickness': 0,
'width': width,
'tabstyle': 'wordprocessor', # new in 8.5
'height': idleConf.GetOption(
'main', 'EditorWindow', 'height', type='int'),
}
self.text = text = MultiCallCreator(Text)(text_frame, **text_options)
self.top.focused_widget = self.text
self.createmenubar()
self.apply_bindings()
self.top.protocol("WM_DELETE_WINDOW", self.close)
self.top.bind("<<close-window>>", self.close_event)
if macosx.isAquaTk():
# Command-W on editor windows doesn't work without this.
text.bind('<<close-window>>', self.close_event)
# Some OS X systems have only one mouse button, so use
# control-click for popup context menus there. For two
# buttons, AquaTk defines <2> as the right button, not <3>.
text.bind("<Control-Button-1>",self.right_menu_event)
text.bind("<2>", self.right_menu_event)
else:
# Elsewhere, use right-click for popup menus.
text.bind("<3>",self.right_menu_event)
text.bind('<MouseWheel>', wheel_event)
if text._windowingsystem == 'x11':
text.bind('<Button-4>', wheel_event)
text.bind('<Button-5>', wheel_event)
text.bind('<Configure>', self.handle_winconfig)
text.bind("<<cut>>", self.cut)
text.bind("<<copy>>", self.copy)
text.bind("<<paste>>", self.paste)
text.bind("<<center-insert>>", self.center_insert_event)
text.bind("<<help>>", self.help_dialog)
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_event)
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("<<smart-backspace>>",self.smart_backspace_event)
text.bind("<<newline-and-indent>>",self.newline_and_indent_event)
text.bind("<<smart-indent>>",self.smart_indent_event)
self.fregion = fregion = self.FormatRegion(self)
# self.fregion used in smart_indent_event to access indent_region.
text.bind("<<indent-region>>", fregion.indent_region_event)
text.bind("<<dedent-region>>", fregion.dedent_region_event)
text.bind("<<comment-region>>", fregion.comment_region_event)
text.bind("<<uncomment-region>>", fregion.uncomment_region_event)
text.bind("<<tabify-region>>", fregion.tabify_region_event)
text.bind("<<untabify-region>>", fregion.untabify_region_event)
indents = self.Indents(self)
text.bind("<<toggle-tabs>>", indents.toggle_tabs_event)
text.bind("<<change-indentwidth>>", indents.change_indentwidth_event)
text.bind("<Left>", self.move_at_edge_if_selection(0))
text.bind("<Right>", self.move_at_edge_if_selection(1))
text.bind("<<del-word-left>>", self.del_word_left)
text.bind("<<del-word-right>>", self.del_word_right)
text.bind("<<beginning-of-line>>", self.home_callback)
if flist:
flist.inversedict[self] = key
if key:
flist.dict[key] = self
text.bind("<<open-new-window>>", self.new_callback)
text.bind("<<close-all-windows>>", self.flist.close_all_callback)
text.bind("<<open-class-browser>>", self.open_module_browser)
text.bind("<<open-path-browser>>", self.open_path_browser)
text.bind("<<open-turtle-demo>>", self.open_turtle_demo)
self.set_status_bar()
text_frame.pack(side=LEFT, fill=BOTH, expand=1)
text_frame.rowconfigure(1, weight=1)
text_frame.columnconfigure(1, weight=1)
vbar['command'] = self.handle_yview
vbar.grid(row=1, column=2, sticky=NSEW)
text['yscrollcommand'] = vbar.set
text['font'] = idleConf.GetFont(self.root, 'main', 'EditorWindow')
text.grid(row=1, column=1, sticky=NSEW)
text.focus_set()
self.set_width()
# usetabs true -> literal tab characters are used by indent and
# dedent cmds, possibly mixed with spaces if
# indentwidth is not a multiple of tabwidth,
# which will cause Tabnanny to nag!
# false -> tab characters are converted to spaces by indent
# and dedent cmds, and ditto TAB keystrokes
# Although use-spaces=0 can be configured manually in config-main.def,
# configuration of tabs v. spaces is not supported in the configuration
# dialog. IDLE promotes the preferred Python indentation: use spaces!
usespaces = idleConf.GetOption('main', 'Indent',
'use-spaces', type='bool')
self.usetabs = not usespaces
# 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.
self.tabwidth = 8 # must remain 8 until Tk is fixed.
# indentwidth is the number of screen characters per indent level.
# The recommended Python indentation is four spaces.
self.indentwidth = self.tabwidth
self.set_notabs_indentwidth()
# Store the current value of the insertofftime now so we can restore
# it if needed.
if not hasattr(idleConf, 'blink_off_time'):
idleConf.blink_off_time = self.text['insertofftime']
self.update_cursor_blink()
# 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.
self.num_context_lines = 50, 500, 5000000
self.per = per = self.Percolator(text)
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)
self.good_load = False
self.set_indentation_params(False)
self.color = None # initialized below in self.ResetColorizer
self.code_context = None # optionally initialized later below
self.line_numbers = None # optionally initialized later below
if filename:
if os.path.exists(filename) and not os.path.isdir(filename):
if io.loadfile(filename):
self.good_load = True
is_py_src = self.ispythonsource(filename)
self.set_indentation_params(is_py_src)
else:
io.set_filename(filename)
self.good_load = True
self.ResetColorizer()
self.saved_change_hook()
self.update_recent_files_list()
self.load_extensions()
menu = self.menudict.get('window')
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
window.register_callback(self.postwindowsmenu)
# Some abstractions so IDLE extensions are cross-IDE
self.askinteger = simpledialog.askinteger
self.askyesno = messagebox.askyesno
self.showerror = messagebox.showerror
# Add pseudoevents for former extension fixed keys.
# (This probably needs to be done once in the process.)
text.event_add('<<autocomplete>>', '<Key-Tab>')
text.event_add('<<try-open-completions>>', '<KeyRelease-period>',
'<KeyRelease-slash>', '<KeyRelease-backslash>')
text.event_add('<<try-open-calltip>>', '<KeyRelease-parenleft>')
text.event_add('<<refresh-calltip>>', '<KeyRelease-parenright>')
text.event_add('<<paren-closed>>', '<KeyRelease-parenright>',
'<KeyRelease-bracketright>', '<KeyRelease-braceright>')
# Former extension bindings depends on frame.text being packed
# (called from self.ResetColorizer()).
autocomplete = self.AutoComplete(self, self.user_input_insert_tags)
text.bind("<<autocomplete>>", autocomplete.autocomplete_event)
text.bind("<<try-open-completions>>",
autocomplete.try_open_completions_event)
text.bind("<<force-open-completions>>",
autocomplete.force_open_completions_event)
text.bind("<<expand-word>>", self.AutoExpand(self).expand_word_event)
text.bind("<<format-paragraph>>",
self.FormatParagraph(self).format_paragraph_event)
parenmatch = self.ParenMatch(self)
text.bind("<<flash-paren>>", parenmatch.flash_paren_event)
text.bind("<<paren-closed>>", parenmatch.paren_closed_event)
scriptbinding = ScriptBinding(self)
text.bind("<<check-module>>", scriptbinding.check_module_event)
text.bind("<<run-module>>", scriptbinding.run_module_event)
text.bind("<<run-custom>>", scriptbinding.run_custom_event)
text.bind("<<do-rstrip>>", self.Rstrip(self).do_rstrip)
self.ctip = ctip = self.Calltip(self)
text.bind("<<try-open-calltip>>", ctip.try_open_calltip_event)
#refresh-calltip must come after paren-closed to work right
text.bind("<<refresh-calltip>>", ctip.refresh_calltip_event)
text.bind("<<force-open-calltip>>", ctip.force_open_calltip_event)
text.bind("<<zoom-height>>", self.ZoomHeight(self).zoom_height_event)
if self.allow_code_context:
self.code_context = self.CodeContext(self)
text.bind("<<toggle-code-context>>",
self.code_context.toggle_code_context_event)
else:
self.update_menu_state('options', '*ode*ontext', 'disabled')
if self.allow_line_numbers:
self.line_numbers = self.LineNumbers(self)
if idleConf.GetOption('main', 'EditorWindow',
'line-numbers-default', type='bool'):
self.toggle_line_numbers_event()
text.bind("<<toggle-line-numbers>>", self.toggle_line_numbers_event)
else:
self.update_menu_state('options', '*ine*umbers', 'disabled')
def handle_winconfig(self, event=None):
self.set_width()
def set_width(self):
text = self.text
inner_padding = sum(map(text.tk.getint, [text.cget('border'),
text.cget('padx')]))
pixel_width = text.winfo_width() - 2 * inner_padding
# Divide the width of the Text widget by the font width,
# which is taken to be the width of '0' (zero).
# http://www.tcl.tk/man/tcl8.6/TkCmd/text.htm#M21
zero_char_width = \
Font(text, font=text.cget('font')).measure('0')
self.width = pixel_width // zero_char_width
def new_callback(self, event):
dirname, basename = self.io.defaultfilename()
self.flist.new(dirname)
return "break"
def home_callback(self, event):
if (event.state & 4) != 0 and event.keysym == "Home":
# state&4==Control. If <Control-Home>, use the Tk binding.
return None
if self.text.index("iomark") and \
self.text.compare("iomark", "<=", "insert lineend") and \
self.text.compare("insert linestart", "<=", "iomark"):
# In Shell on input line, go to just after prompt
insertpt = int(self.text.index("iomark").split(".")[1])
else:
line = self.text.get("insert linestart", "insert lineend")
for insertpt in range(len(line)):
if line[insertpt] not in (' ','\t'):
break
else:
insertpt=len(line)
lineat = int(self.text.index("insert").split('.')[1])
if insertpt == lineat:
insertpt = 0
dest = "insert linestart+"+str(insertpt)+"c"
if (event.state&1) == 0:
# shift was not pressed
self.text.tag_remove("sel", "1.0", "end")
else:
if not self.text.index("sel.first"):
# there was no previous selection
self.text.mark_set("my_anchor", "insert")
else:
if self.text.compare(self.text.index("sel.first"), "<",
self.text.index("insert")):
self.text.mark_set("my_anchor", "sel.first") # extend back
else:
self.text.mark_set("my_anchor", "sel.last") # extend forward
first = self.text.index(dest)
last = self.text.index("my_anchor")
if self.text.compare(first,">",last):
first,last = last,first
self.text.tag_remove("sel", "1.0", "end")
self.text.tag_add("sel", first, last)
self.text.mark_set("insert", dest)
self.text.see("insert")
return "break"
def set_status_bar(self):
self.status_bar = self.MultiStatusBar(self.top)
sep = Frame(self.top, height=1, borderwidth=1, background='grey75')
if sys.platform == "darwin":
# Insert some padding to avoid obscuring some of the statusbar
# by the resize widget.
self.status_bar.set_label('_padding1', ' ', side=RIGHT)
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)
sep.pack(side=BOTTOM, fill=X)
self.text.bind("<<set-line-and-column>>", self.set_line_and_column)
self.text.event_add("<<set-line-and-column>>",
"<KeyRelease>", "<ButtonRelease>")
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)
""" Menu definitions and functions.
* self.menubar - the always visible horizontal menu bar.
* mainmenu.menudefs - a list of tuples, one for each menubar item.
Each tuple pairs a lower-case name and list of dropdown items.
Each item is a name, virtual event pair or None for separator.
* mainmenu.default_keydefs - maps events to keys.
* text.keydefs - same.
* cls.menu_specs - menubar name, titlecase display form pairs
with Alt-hotkey indicator. A subset of menudefs items.
* self.menudict - map menu name to dropdown menu.
* self.recent_files_menu - 2nd level cascade in the file cascade.
* self.wmenu_end - set in __init__ (purpose unclear).
createmenubar, postwindowsmenu, update_menu_label, update_menu_state,
ApplyKeybings (2nd part), reset_help_menu_entries,
_extra_help_callback, update_recent_files_list,
apply_bindings, fill_menus, (other functions?)
"""
menu_specs = [
("file", "_File"),
("edit", "_Edit"),
("format", "F_ormat"),
("run", "_Run"),
("options", "_Options"),
("window", "_Window"),
("help", "_Help"),
]
def createmenubar(self):
"""Populate the menu bar widget for the editor window.
Each option on the menubar is itself a cascade-type Menu widget
with the menubar as the parent. The names, labels, and menu
shortcuts for the menubar items are stored in menu_specs. Each
submenu is subsequently populated in fill_menus(), except for
'Recent Files' which is added to the File menu here.
Instance variables:
menubar: Menu widget containing first level menu items.
menudict: Dictionary of {menuname: Menu instance} items. The keys
represent the valid menu items for this window and may be a
subset of all the menudefs available.
recent_files_menu: Menu widget contained within the 'file' menudict.
"""
mbar = self.menubar
self.menudict = menudict = {}
for name, label in self.menu_specs:
underline, label = prepstr(label)
postcommand = getattr(self, f'{name}_menu_postcommand', None)
menudict[name] = menu = Menu(mbar, name=name, tearoff=0,
postcommand=postcommand)
mbar.add_cascade(label=label, menu=menu, underline=underline)
if macosx.isCarbonTk():
# Insert the application menu
menudict['application'] = menu = Menu(mbar, name='apple',
tearoff=0)
mbar.add_cascade(label='IDLE', menu=menu)
self.fill_menus()
self.recent_files_menu = Menu(self.menubar, tearoff=0)
self.menudict['file'].insert_cascade(3, label='Recent Files',
underline=0,
menu=self.recent_files_menu)
self.base_helpmenu_length = self.menudict['help'].index(END)
self.reset_help_menu_entries()
def postwindowsmenu(self):
"""Callback to register window.
Only called when Window menu exists.
"""
menu = self.menudict['window']
end = menu.index("end")
if end is None:
end = -1
if end > self.wmenu_end:
menu.delete(self.wmenu_end+1, end)
window.add_windows_to_menu(menu)
def update_menu_label(self, menu, index, label):
"Update label for menu item at index."
menuitem = self.menudict[menu]
menuitem.entryconfig(index, label=label)
def update_menu_state(self, menu, index, state):
"Update state for menu item at index."
menuitem = self.menudict[menu]
menuitem.entryconfig(index, state=state)
def handle_yview(self, event, *args):
"Handle scrollbar."
if event == 'moveto':
fraction = float(args[0])
lines = (round(self.getlineno('end') * fraction) -
self.getlineno('@0,0'))
event = 'scroll'
args = (lines, 'units')
self.text.yview(event, *args)
return 'break'
rmenu = None
def right_menu_event(self, event):
text = self.text
newdex = text.index(f'@{event.x},{event.y}')
try:
in_selection = (text.compare('sel.first', '<=', newdex) and
text.compare(newdex, '<=', 'sel.last'))
except TclError:
in_selection = False
if not in_selection:
text.tag_remove("sel", "1.0", "end")
text.mark_set("insert", newdex)
if not self.rmenu:
self.make_rmenu()
rmenu = self.rmenu
self.event = event
iswin = sys.platform[:3] == 'win'
if iswin:
text.config(cursor="arrow")
for item in self.rmenu_specs:
try:
label, eventname, verify_state = item
except ValueError: # see issue1207589
continue
if verify_state is None:
continue
state = getattr(self, verify_state)()
rmenu.entryconfigure(label, state=state)
rmenu.tk_popup(event.x_root, event.y_root)
if iswin:
self.text.config(cursor="ibeam")
return "break"
rmenu_specs = [
# ("Label", "<<virtual-event>>", "statefuncname"), ...
("Close", "<<close-window>>", None), # Example
]
def make_rmenu(self):
rmenu = Menu(self.text, tearoff=0)
for item in self.rmenu_specs:
label, eventname = item[0], item[1]
if label is not None:
def command(text=self.text, eventname=eventname):
text.event_generate(eventname)
rmenu.add_command(label=label, command=command)
else:
rmenu.add_separator()
self.rmenu = rmenu
def rmenu_check_cut(self):
return self.rmenu_check_copy()
def rmenu_check_copy(self):
try:
indx = self.text.index('sel.first')
except TclError:
return 'disabled'
else:
return 'normal' if indx else 'disabled'
def rmenu_check_paste(self):
try:
self.text.tk.call('tk::GetSelection', self.text, 'CLIPBOARD')
except TclError:
return 'disabled'
else:
return 'normal'
def about_dialog(self, event=None):
"Handle Help 'About IDLE' event."
# Synchronize with macosx.overrideRootMenu.about_dialog.
help_about.AboutDialog(self.top)
return "break"
def config_dialog(self, event=None):
"Handle Options 'Configure IDLE' event."
# Synchronize with macosx.overrideRootMenu.config_dialog.
configdialog.ConfigDialog(self.top,'Settings')
return "break"
def help_dialog(self, event=None):
"Handle Help 'IDLE Help' event."
# Synchronize with macosx.overrideRootMenu.help_dialog.
if self.root:
parent = self.root
else:
parent = self.top
help.show_idlehelp(parent)
return "break"
def python_docs(self, event=None):
if sys.platform[:3] == 'win':
try:
os.startfile(self.help_url)
except OSError as why:
messagebox.showerror(title='Document Start Failure',
message=str(why), parent=self.text)
else:
webbrowser.open(self.help_url)
return "break"
def cut(self,event):
self.text.event_generate("<<Cut>>")
return "break"
def copy(self,event):
if not self.text.tag_ranges("sel"):
# There is no selection, so do nothing and maybe interrupt.
return None
self.text.event_generate("<<Copy>>")
return "break"
def paste(self,event):
self.text.event_generate("<<Paste>>")
self.text.see("insert")
return "break"
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")
return "break"
def move_at_edge_if_selection(self, edge_index):
"""Cursor move begins at start or end of selection
When a left/right cursor key is pressed create and return to Tkinter a
function which causes a cursor move from the associated edge of the
selection.
"""
self_text_index = self.text.index
self_text_mark_set = self.text.mark_set
edges_table = ("sel.first+1c", "sel.last-1c")
def move_at_edge(event):
if (event.state & 5) == 0: # no shift(==1) or control(==4) pressed
try:
self_text_index("sel.first")
self_text_mark_set("insert", edges_table[edge_index])
except TclError:
pass
return move_at_edge
def del_word_left(self, event):
self.text.event_generate('<Meta-Delete>')
return "break"
def del_word_right(self, event):
self.text.event_generate('<Meta-d>')
return "break"
def find_event(self, event):
search.find(self.text)
return "break"
def find_again_event(self, event):
search.find_again(self.text)
return "break"
def find_selection_event(self, event):
search.find_selection(self.text)
return "break"
def find_in_files_event(self, event):
grep.grep(self.text, self.io, self.flist)
return "break"
def replace_event(self, event):
replace.replace(self.text)
return "break"
def goto_line_event(self, event):
text = self.text
lineno = query.Goto(
text, "Go To Line",
"Enter a positive integer\n"
"('big' = end of file):"
).result
if lineno is not None:
text.tag_remove("sel", "1.0", "end")
text.mark_set("insert", f'{lineno}.0')
text.see("insert")
self.set_line_and_column()
return "break"
def open_module(self):
"""Get module name from user and open it.
Return module path or None for calls by open_module_browser
when latter is not invoked in named editor window.
"""
# XXX This, open_module_browser, and open_path_browser
# would fit better in iomenu.IOBinding.
try:
name = self.text.get("sel.first", "sel.last").strip()
except TclError:
name = ''
file_path = query.ModuleName(
self.text, "Open Module",
"Enter the name of a Python module\n"
"to search on sys.path and open:",
name).result
if file_path is not None:
if self.flist:
self.flist.open(file_path)
else:
self.io.loadfile(file_path)
return file_path
def open_module_event(self, event):
self.open_module()
return "break"
def open_module_browser(self, event=None):
filename = self.io.filename
if not (self.__class__.__name__ == 'PyShellEditorWindow'
and filename):
filename = self.open_module()
if filename is None:
return "break"
from idlelib import browser
browser.ModuleBrowser(self.root, filename)
return "break"
def open_path_browser(self, event=None):
from idlelib import pathbrowser
pathbrowser.PathBrowser(self.root)
return "break"
def open_turtle_demo(self, event = None):
import subprocess
cmd = [sys.executable,
'-c',
'from turtledemo.__main__ import main; main()']
subprocess.Popen(cmd, shell=False)
return "break"
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 or os.path.isdir(filename):
return True
base, ext = os.path.splitext(os.path.basename(filename))
if os.path.normcase(ext) in py_extensions:
return True
line = self.text.get('1.0', '1.0 lineend')
return line.startswith('#!') and 'python' in line
def close_hook(self):
if self.flist:
self.flist.unregister_maybe_terminate(self)
self.flist = None
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()
self.top.update_windowlist_registry(self)
self.ResetColorizer()
def _addcolorizer(self):
if self.color:
return
if self.ispythonsource(self.io.filename):
self.color = self.ColorDelegator()
# can add more colorizers here...
if self.color:
self.per.insertfilterafter(filter=self.color, after=self.undo)
def _rmcolorizer(self):
if not self.color:
return
self.color.removecolors()
self.per.removefilter(self.color)
self.color = None
def ResetColorizer(self):
"Update the color theme"
# Called from self.filename_change_hook and from configdialog.py
self._rmcolorizer()
self._addcolorizer()
EditorWindow.color_config(self.text)
if self.code_context is not None:
self.code_context.update_highlight_colors()
if self.line_numbers is not None:
self.line_numbers.update_colors()
IDENTCHARS = string.ascii_letters + string.digits + "_"
def colorize_syntax_error(self, text, pos):
text.tag_add("ERROR", pos)
char = text.get(pos)
if char and char in self.IDENTCHARS:
text.tag_add("ERROR", pos + " wordstart", pos)
if '\n' == text.get(pos): # error at line end
text.mark_set("insert", pos)
else:
text.mark_set("insert", pos + "+1c")
text.see(pos)
def update_cursor_blink(self):
"Update the cursor blink configuration."
cursorblink = idleConf.GetOption(
'main', 'EditorWindow', 'cursor-blink', type='bool')
if not cursorblink:
self.text['insertofftime'] = 0
else:
# Restore the original value
self.text['insertofftime'] = idleConf.blink_off_time
def ResetFont(self):
"Update the text widgets' font if it is changed"
# Called from configdialog.py
# Update the code context widget first, since its height affects
# the height of the text widget. This avoids double re-rendering.
if self.code_context is not None:
self.code_context.update_font()
# Next, update the line numbers widget, since its width affects
# the width of the text widget.
if self.line_numbers is not None:
self.line_numbers.update_font()
# Finally, update the main text widget.
new_font = idleConf.GetFont(self.root, 'main', 'EditorWindow')
self.text['font'] = new_font
self.set_width()
def RemoveKeybindings(self):
"""Remove the virtual, configurable keybindings.
Leaves the default Tk Text keybindings.
"""
# Called from configdialog.deactivate_current_config.
self.mainmenu.default_keydefs = keydefs = idleConf.GetCurrentKeySet()
for event, keylist in keydefs.items():
self.text.event_delete(event, *keylist)
for extensionName in self.get_standard_extension_names():
xkeydefs = idleConf.GetExtensionBindings(extensionName)
if xkeydefs:
for event, keylist in xkeydefs.items():
self.text.event_delete(event, *keylist)
def ApplyKeybindings(self):
"""Apply the virtual, configurable keybindings.
Also update hotkeys to current keyset.
"""
# Called from configdialog.activate_config_changes.
self.mainmenu.default_keydefs = keydefs = idleConf.GetCurrentKeySet()
self.apply_bindings()
for extensionName in self.get_standard_extension_names():
xkeydefs = idleConf.GetExtensionBindings(extensionName)
if xkeydefs:
self.apply_bindings(xkeydefs)
# Update menu accelerators.
menuEventDict = {}
for menu in self.mainmenu.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:
menu = self.menudict[menubarItem]
end = menu.index(END)
if end is None:
# Skip empty menus
continue
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 menubarItem in menuEventDict:
if itemName in menuEventDict[menubarItem]:
event = menuEventDict[menubarItem][itemName]
if event:
accel = get_accelerator(keydefs, event)
menu.entryconfig(index, accelerator=accel)
def set_notabs_indentwidth(self):
"Update the indentwidth if changed and not using tabs in this window"
# Called from configdialog.py
if not self.usetabs:
self.indentwidth = idleConf.GetOption('main', 'Indent','num-spaces',
type='int')
def reset_help_menu_entries(self):
"""Update the additional help entries on the Help menu."""
help_list = idleConf.GetAllExtraHelpSourcesList()
helpmenu = self.menudict['help']
# First delete the extra help entries, if any.
helpmenu_length = helpmenu.index(END)
if helpmenu_length > self.base_helpmenu_length:
helpmenu.delete((self.base_helpmenu_length + 1), helpmenu_length)
# Then rebuild them.
if help_list:
helpmenu.add_separator()
for entry in help_list:
cmd = self._extra_help_callback(entry[1])
helpmenu.add_command(label=entry[0], command=cmd)
# And update the menu dictionary.
self.menudict['help'] = helpmenu
def _extra_help_callback(self, resource):
"""Return a callback that loads resource (file or web page)."""
def display_extra_help(helpfile=resource):
if not helpfile.startswith(('www', 'http')):
helpfile = os.path.normpath(helpfile)
if sys.platform[:3] == 'win':
try:
os.startfile(helpfile)
except OSError as why:
messagebox.showerror(title='Document Start Failure',
message=str(why), parent=self.text)
else:
webbrowser.open(helpfile)
return display_extra_help
def update_recent_files_list(self, new_file=None):
"Load and update the recent files list and menus"
# TODO: move to iomenu.
rf_list = []
file_path = self.recent_files_path
if file_path and os.path.exists(file_path):
with open(file_path,
encoding='utf_8', errors='replace') as rf_list_file:
rf_list = rf_list_file.readlines()
if new_file:
new_file = os.path.abspath(new_file) + '\n'
if new_file in rf_list:
rf_list.remove(new_file) # move to top
rf_list.insert(0, new_file)
# clean and save the recent files list
bad_paths = []
for path in rf_list:
if '\0' in path or not os.path.exists(path[0:-1]):
bad_paths.append(path)
rf_list = [path for path in rf_list if path not in bad_paths]
ulchars = "1234567890ABCDEFGHIJK"
rf_list = rf_list[0:len(ulchars)]
if file_path:
try:
with open(file_path, 'w',
encoding='utf_8', errors='replace') as rf_file:
rf_file.writelines(rf_list)
except OSError as err:
if not getattr(self.root, "recentfiles_message", False):
self.root.recentfiles_message = True
messagebox.showwarning(title='IDLE Warning',
message="Cannot save Recent Files list to disk.\n"
f" {err}\n"
"Select OK to continue.",
parent=self.text)
# for each edit window instance, construct the recent files menu
for instance in self.top.instance_dict:
menu = instance.recent_files_menu
menu.delete(0, END) # clear, and rebuild:
for i, file_name in enumerate(rf_list):
file_name = file_name.rstrip() # zap \n
callback = instance.__recent_file_callback(file_name)
menu.add_command(label=ulchars[i] + " " + file_name,
command=callback,
underline=0)
def __recent_file_callback(self, file_name):
def open_recent_file(fn_closure=file_name):
self.io.open(editFile=fn_closure)
return open_recent_file
def saved_change_hook(self):
short = self.short_title()
long = self.long_title()
if short and long and not macosx.isCocoaTk():
# Don't use both values on macOS because
# that doesn't match platform conventions.
title = short + " - " + long + _py_version
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
self.top.wm_title(title)
self.top.wm_iconname(icon)
if macosx.isCocoaTk():
# Add a proxy icon to the window title
self.top.wm_attributes("-titlepath", long)
# Maintain the modification status for the window
self.top.wm_attributes("-modified", not self.get_saved())
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
return os.path.basename(filename) if filename else "untitled"
def long_title(self):
return self.io.filename or ""
def center_insert_event(self, event):
self.center()
return "break"
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 get_geometry(self):
"Return (width, height, x, y)"
geom = self.top.wm_geometry()
m = re.match(r"(\d+)x(\d+)\+(-?\d+)\+(-?\d+)", geom)
return list(map(int, m.groups()))
def close_event(self, event):
self.close()
return "break"
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):
try:
reply = self.maybesave()
if str(reply) != "cancel":
self._close()
return reply
except AttributeError: # bpo-35379: close called twice
pass
def _close(self):
if self.io.filename:
self.update_recent_files_list(new_file=self.io.filename)
window.unregister_callback(self.postwindowsmenu)
self.unload_extensions()
self.io.close()
self.io = None
self.undo = None
if self.color:
self.color.close()
self.color = None
self.text = None
self.tkinter_vars = None
self.per.close()
self.per = None
self.top.destroy()
if self.close_hook:
# unless override: unregister from flist, terminate if last window
self.close_hook()
def load_extensions(self):
self.extensions = {}
self.load_standard_extensions()
def unload_extensions(self):
for ins in list(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", repr(name))
traceback.print_exc()
def get_standard_extension_names(self):
return idleConf.GetExtensions(editor_only=True)
extfiles = { # Map built-in config-extension section names to file names.
'ZzDummy': 'zzdummy',
}
def load_extension(self, name):
fname = self.extfiles.get(name, name)
try:
try:
mod = importlib.import_module('.' + fname, package=__package__)
except (ImportError, TypeError):
mod = importlib.import_module(fname)
except ImportError:
print("\nFailed to import extension: ", name)
raise
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
if keydefs:
self.apply_bindings(keydefs)
for vevent in keydefs:
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))
def apply_bindings(self, keydefs=None):
"""Add events with keys to self.text."""
if keydefs is None:
keydefs = self.mainmenu.default_keydefs
text = self.text
text.keydefs = keydefs
for event, keylist in keydefs.items():
if keylist:
text.event_add(event, *keylist)
def fill_menus(self, menudefs=None, keydefs=None):
"""Fill in dropdown menus used by this window.
Items whose name begins with '!' become checkbuttons.
Other names indicate commands. None becomes a separator.
"""
if menudefs is None:
menudefs = self.mainmenu.menudefs
if keydefs is None:
keydefs = self.mainmenu.default_keydefs
menudict = self.menudict
text = self.text
for mname, entrylist in menudefs:
menu = menudict.get(mname)
if not menu:
continue
for entry in entrylist:
if entry is None:
menu.add_separator()
else:
label, eventname = entry
checkbutton = (label[:1] == '!')
if checkbutton:
label = label[1:]
underline, label = prepstr(label)
accelerator = get_accelerator(keydefs, eventname)
def command(text=text, eventname=eventname):
text.event_generate(eventname)
if checkbutton:
var = self.get_var_obj(eventname, 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.get_var_obj(name)
if var:
value = var.get()
return value
else:
raise NameError(name)
def setvar(self, name, value, vartype=None):
var = self.get_var_obj(name, vartype)
if var:
var.set(value)
else:
raise NameError(name)
def get_var_obj(self, eventname, vartype=None):
"""Return a tkinter variable instance for the event.
"""
var = self.tkinter_vars.get(eventname)
if not var and vartype:
# Create a Tkinter variable object.
self.tkinter_vars[eventname] = 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_tk_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_tk_tabwidth(self, newtabwidth):
text = self.text
if self.get_tk_tabwidth() != newtabwidth:
# Set text widget tab width
pixels = text.tk.call("font", "measure", text["font"],
"-displayof", text.master,
"n" * newtabwidth)
text.configure(tabs=pixels)
### begin autoindent code ### (configuration was moved to beginning of class)
def set_indentation_params(self, is_py_src, guess=True):
if is_py_src and guess:
i = self.guess_indent()
if 2 <= i <= 8:
self.indentwidth = i
if self.indentwidth != self.tabwidth:
self.usetabs = False
self.set_tk_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
# Debug prompt is multilined....
ncharsdeleted = 0
while True:
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),
self.user_input_insert_tags)
text.undo_block_stop()
return "break"
def smart_indent_event(self, event):
# if intraline selection:
# delete it
# elif multiline selection:
# do indent-region
# else:
# 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.fregion.indent_region_event(event)
text.delete(first, last)
text.mark_set("insert", first)
prefix = text.get("insert linestart", "insert")
raw, effective = get_line_indent(prefix, self.tabwidth)
if raw == len(prefix):
# only whitespace to the left
self.reindent_to(effective + self.indentwidth)
else:
# tab to the next 'stop' within or to right of line's text:
if self.usetabs:
pad = '\t'
else:
effective = len(prefix.expandtabs(self.tabwidth))
n = self.indentwidth
pad = ' ' * (n - effective % n)
text.insert("insert", pad, self.user_input_insert_tags)
text.see("insert")
return "break"
finally:
text.undo_block_stop()
def newline_and_indent_event(self, event):
"""Insert a newline and indentation after Enter keypress event.
Properly position the cursor on the new line based on information
from the current line. This takes into account if the current line
is a shell prompt, is empty, has selected text, contains a block
opener, contains a block closer, is a continuation line, or
is inside a string.
"""
text = self.text
first, last = self.get_selection_indices()
text.undo_block_start()
try: # Close undo block and expose new line in finally clause.
if first and last:
text.delete(first, last)
text.mark_set("insert", first)
line = text.get("insert linestart", "insert")
# Count leading whitespace for indent size.
i, n = 0, len(line)
while i < n and line[i] in " \t":
i += 1
if i == n:
# The cursor is in or at leading indentation in a continuation
# line; just inject an empty line at the start.
text.insert("insert linestart", '\n',
self.user_input_insert_tags)
return "break"
indent = line[:i]
# Strip whitespace before insert point unless it's in the prompt.
i = 0
while line and line[-1] in " \t":
line = line[:-1]
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")
# Insert new line.
text.insert("insert", '\n', self.user_input_insert_tags)
# Adjust indentation for continuations and block open/close.
# First need to find the last statement.
lno = index2line(text.index('insert'))
y = pyparse.Parser(self.indentwidth, self.tabwidth)
if not self.prompt_last_line:
for context in self.num_context_lines:
startat = max(lno - context, 1)
startatindex = repr(startat) + ".0"
rawtext = text.get(startatindex, "insert")
y.set_code(rawtext)
bod = y.find_good_parse_start(
self._build_char_in_string_func(startatindex))
if bod is not None or startat == 1:
break
y.set_lo(bod or 0)
else:
r = text.tag_prevrange("console", "insert")
if r:
startatindex = r[1]
else:
startatindex = "1.0"
rawtext = text.get(startatindex, "insert")
y.set_code(rawtext)
y.set_lo(0)
c = y.get_continuation_type()
if c != pyparse.C_NONE:
# The current statement hasn't ended yet.
if c == pyparse.C_STRING_FIRST_LINE:
# After the first line of a string do not indent at all.
pass
elif c == pyparse.C_STRING_NEXT_LINES:
# Inside a string which started before this line;
# just mimic the current indent.
text.insert("insert", indent, self.user_input_insert_tags)
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 statement 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,
self.user_input_insert_tags)
else:
self.reindent_to(y.compute_backslash_indent())
else:
assert 0, f"bogus continuation type {c!r}"
return "break"
# This line starts a brand new statement; indent relative to
# indentation of initial line of closest preceding
# interesting statement.
indent = y.get_base_indent_string()
text.insert("insert", indent, self.user_input_insert_tags)
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()
# Our editwin provides an 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
# XXX this isn't bound to anything -- see 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"
# 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),
self.user_input_insert_tags)
text.undo_block_stop()
# 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).run()
if opener and indented:
raw, indentsmall = get_line_indent(opener, self.tabwidth)
raw, indentlarge = get_line_indent(indented, self.tabwidth)
else:
indentsmall = indentlarge = 0
return indentlarge - indentsmall
def toggle_line_numbers_event(self, event=None):
if self.line_numbers is None:
return
if self.line_numbers.is_shown:
self.line_numbers.hide_sidebar()
menu_label = "Show"
else:
self.line_numbers.show_sidebar()
menu_label = "Hide"
self.update_menu_label(menu='options', index='*ine*umbers',
label=f'{menu_label} Line Numbers')
# "line.col" -> line, as an int
def index2line(index):
return int(float(index))
_line_indent_re = re.compile(r'[ \t]*')
def get_line_indent(line, tabwidth):
"""Return a line's indentation as (# chars, effective # of spaces).
The effective # of spaces is the length after properly "expanding"
the tabs into spaces, as done by str.expandtabs(tabwidth).
"""
m = _line_indent_re.match(line)
return m.end(), len(m.group().expandtabs(tabwidth))
class IndentSearcher:
"Manage initial indent guess, returned by run method."
def __init__(self, text):
self.text = text
self.i = self.finished = 0
self.blkopenline = self.indentedline = None
def readline(self):
if self.finished:
return ""
i = self.i = self.i + 1
mark = repr(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', 'match', 'try',
'while', 'with')):
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):
"""Return 2 lines containing block opener and and indent.
Either the indent line or both may be None.
"""
try:
tokens = tokenize.generate_tokens(self.readline)
for token in tokens:
self.tokeneater(*token)
except (tokenize.TokenError, SyntaxError):
# Stopping the tokenizer early can trigger spurious errors.
pass
return self.blkopenline, self.indentedline
### end autoindent code ###
def prepstr(s):
"""Extract the underscore from a string.
For example, prepstr("Co_py") returns (2, "Copy").
Args:
s: String with underscore.
Returns:
Tuple of (position of underscore, string without underscore).
"""
i = s.find('_')
if i >= 0:
s = s[:i] + s[i+1:]
return i, s
keynames = {
'bracketleft': '[',
'bracketright': ']',
'slash': '/',
}
def get_accelerator(keydefs, eventname):
"""Return a formatted string for the keybinding of an event.
Convert the first keybinding for a given event to a form that
can be displayed as an accelerator on the menu.
Args:
keydefs: Dictionary of valid events to keybindings.
eventname: Event to retrieve keybinding for.
Returns:
Formatted string of the keybinding.
"""
keylist = keydefs.get(eventname)
# issue10940: temporary workaround to prevent hang with OS X Cocoa Tk 8.5
# if not keylist:
if (not keylist) or (macosx.isCocoaTk() and eventname in {
"<<open-module>>",
"<<goto-line>>",
"<<change-indentwidth>>"}):
return ""
s = keylist[0]
# Convert strings of the form -singlelowercase to -singleuppercase.
s = re.sub(r"-[a-z]\b", lambda m: m.group().upper(), s)
# Convert certain keynames to their symbol.
s = re.sub(r"\b\w+\b", lambda m: keynames.get(m.group(), m.group()), s)
# Remove Key- from string.
s = re.sub("Key-", "", s)
# Convert Cancel to Ctrl-Break.
s = re.sub("Cancel", "Ctrl-Break", s) # [email protected]
# Convert Control to Ctrl-.
s = re.sub("Control-", "Ctrl-", s)
# Change - to +.
s = re.sub("-", "+", s)
# Change >< to space.
s = re.sub("><", " ", s)
# Remove <.
s = re.sub("<", "", s)
# Remove >.
s = re.sub(">", "", s)
return s
def fixwordbreaks(root):
# On Windows, tcl/tk breaks 'words' only on spaces, as in Command Prompt.
# We want Motif style everywhere. See #21474, msg218992 and followup.
tk = root.tk
tk.call('tcl_wordBreakAfter', 'a b', 0) # make sure word.tcl is loaded
tk.call('set', 'tcl_wordchars', r'\w')
tk.call('set', 'tcl_nonwordchars', r'\W')
def _editor_window(parent): # htest #
# error if close master window first - timer event, after script
root = parent
fixwordbreaks(root)
if sys.argv[1:]:
filename = sys.argv[1]
else:
filename = None
macosx.setupApp(root, None)
edit = EditorWindow(root=root, filename=filename)
text = edit.text
text['height'] = 10
for i in range(20):
text.insert('insert', ' '*i + str(i) + '\n')
# text.bind("<<close-all-windows>>", edit.close_event)
# Does not stop error, neither does following
# edit.text.bind("<<close-window>>", edit.close_event)
if __name__ == '__main__':
from unittest import main
main('idlelib.idle_test.test_editor', verbosity=2, exit=False)
from idlelib.idle_test.htest import run
run(_editor_window)
Codebase Browser
cpython