"""AutoComplete.py - An IDLE extension for automatically completing names.
This extension can complete either attribute names or file names. It can pop
a window with all available names, for the user to select from.
from idlelib.configHandler import idleConf
# This string includes all chars that may be in a file name (without a path
FILENAME_CHARS = string.ascii_letters + string.digits + os.curdir + "._~#$:-"
# This string includes all chars that may be in an identifier
ID_CHARS = string.ascii_letters + string.digits + "_"
# These constants represent the two different types of completions
COMPLETE_ATTRIBUTES, COMPLETE_FILES = range(1, 2+1)
from idlelib import AutoCompleteWindow
from idlelib.HyperParser import HyperParser
if os.altsep: # e.g. '/' on Windows...
("Show Completions", "<<force-open-completions>>"),
popupwait = idleConf.GetOption("extensions", "AutoComplete",
"popupwait", type="int", default=0)
def __init__(self, editwin=None):
if editwin is None: # subprocess and test
self.autocompletewindow = None
# id of delayed call, and the index of the text insert when the delayed
# call was issued. If _delayed_completion_id is None, there is no
self._delayed_completion_id = None
self._delayed_completion_index = None
def _make_autocomplete_window(self):
return AutoCompleteWindow.AutoCompleteWindow(self.text)
def _remove_autocomplete_window(self, event=None):
if self.autocompletewindow:
self.autocompletewindow.hide_window()
self.autocompletewindow = None
def force_open_completions_event(self, event):
"""Happens when the user really wants to open a completion list, even
if a function call is needed.
self.open_completions(True, False, True)
def try_open_completions_event(self, event):
"""Happens when it would be nice to open a completion list, but not
really necessary, for example after a dot, so function
lastchar = self.text.get("insert-1c")
self._open_completions_later(False, False, False,
self._open_completions_later(False, False, False,
def autocomplete_event(self, event):
"""Happens when the user wants to complete his word, and if necessary,
open a completion list after that (if there is more than one
if hasattr(event, "mc_state") and event.mc_state:
# A modifier was pressed along with the tab, continue as usual.
if self.autocompletewindow and self.autocompletewindow.is_active():
self.autocompletewindow.complete()
opened = self.open_completions(False, True, True)
def _open_completions_later(self, *args):
self._delayed_completion_index = self.text.index("insert")
if self._delayed_completion_id is not None:
self.text.after_cancel(self._delayed_completion_id)
self._delayed_completion_id = \
self.text.after(self.popupwait, self._delayed_open_completions,
def _delayed_open_completions(self, *args):
self._delayed_completion_id = None
if self.text.index("insert") != self._delayed_completion_index:
self.open_completions(*args)
def open_completions(self, evalfuncs, complete, userWantsWin, mode=None):
"""Find the completions and create the AutoCompleteWindow.
Return True if successful (no syntax error or so found).
if complete is True, then if there's nothing to complete and no
start of completion, won't open completions and return False.
If mode is given, will open a completion list only in this mode.
# Cancel another delayed call, if it exists.
if self._delayed_completion_id is not None:
self.text.after_cancel(self._delayed_completion_id)
self._delayed_completion_id = None
hp = HyperParser(self.editwin, "insert")
curline = self.text.get("insert linestart", "insert")
if hp.is_in_string() and (not mode or mode==COMPLETE_FILES):
self._remove_autocomplete_window()
while i and curline[i-1] in FILENAME_CHARS:
comp_start = curline[i:j]
while i and curline[i-1] in FILENAME_CHARS + SEPS:
elif hp.is_in_code() and (not mode or mode==COMPLETE_ATTRIBUTES):
self._remove_autocomplete_window()
mode = COMPLETE_ATTRIBUTES
while i and curline[i-1] in ID_CHARS:
comp_start = curline[i:j]
if i and curline[i-1] == '.':
hp.set_index("insert-%dc" % (len(curline)-(i-1)))
comp_what = hp.get_expression()
(not evalfuncs and comp_what.find('(') != -1):
if complete and not comp_what and not comp_start:
comp_lists = self.fetch_completions(comp_what, mode)
self.autocompletewindow = self._make_autocomplete_window()
return not self.autocompletewindow.show_window(
comp_lists, "insert-%dc" % len(comp_start),
complete, mode, userWantsWin)
def fetch_completions(self, what, mode):
"""Return a pair of lists of completions for something. The first list
is a sublist of the second. Both are sorted.
If there is a Python subprocess, get the comp. list there. Otherwise,
either fetch_completions() is running in the subprocess itself or it
was called in an IDLE EditorWindow before any script had been run.
The subprocess environment is that of the most recently run script. If
two unrelated modules are being edited some calltips in the current
module may be inoperative if the module was not the last to run.
rpcclt = self.editwin.flist.pyshell.interp.rpcclt
return rpcclt.remotecall("exec", "get_the_completion_list",
if mode == COMPLETE_ATTRIBUTES:
namespace = __main__.__dict__.copy()
namespace.update(__main__.__builtins__.__dict__)
bigl = eval("dir()", namespace)
smalll = sorted(eval("__all__", namespace))
smalll = [s for s in bigl if s[:1] != '_']
entity = self.get_entity(what)
smalll = sorted(entity.__all__)
smalll = [s for s in bigl if s[:1] != '_']
elif mode == COMPLETE_FILES:
expandedpath = os.path.expanduser(what)
bigl = os.listdir(expandedpath)
smalll = [s for s in bigl if s[:1] != '.']
def get_entity(self, name):
"""Lookup name in a namespace spanning sys.modules and __main.dict__"""
namespace = sys.modules.copy()
namespace.update(__main__.__dict__)
return eval(name, namespace)
if __name__ == '__main__':
from unittest import main
main('idlelib.idle_test.test_autocomplete', verbosity=2)
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
