add a modifiable copy of idlelib

Author: antocuni

lib-python/modified-2.7.0/idlelib/AutoComplete.py

@@ -0,0 +1,229 @@
+"""AutoComplete.py - An IDLE extension for automatically completing names.
+
+This extension can complete either attribute names of file names. It can pop
+a window with all available names, for the user to select from.
+"""
+import os
+import sys
+import string
+
+from idlelib.configHandler import idleConf
+
+# This string includes all chars that may be in a file name (without a path
+# separator)
+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
+
+import __main__
+
+SEPS = os.sep
+if os.altsep:  # e.g. '/' on Windows...
+    SEPS += os.altsep
+
+class AutoComplete:
+
+    menudefs = [
+        ('edit', [
+            ("Show Completions", "<<force-open-completions>>"),
+        ])
+    ]
+
+    popupwait = idleConf.GetOption("extensions", "AutoComplete",
+                                   "popupwait", type="int", default=0)
+
+    def __init__(self, editwin=None):
+        self.editwin = editwin
+        if editwin is None:  # subprocess and test
+            return
+        self.text = editwin.text
+        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
+        # delayed call.
+        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 an dot, so function
+        calls won't be made.
+        """
+        lastchar = self.text.get("insert-1c")
+        if lastchar == ".":
+            self._open_completions_later(False, False, False,
+                                         COMPLETE_ATTRIBUTES)
+        elif lastchar in SEPS:
+            self._open_completions_later(False, False, False,
+                                         COMPLETE_FILES)
+
+    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
+        completion)
+        """
+        if hasattr(event, "mc_state") and event.mc_state:
+            # A modifier was pressed along with the tab, continue as usual.
+            return
+        if self.autocompletewindow and self.autocompletewindow.is_active():
+            self.autocompletewindow.complete()
+            return "break"
+        else:
+            opened = self.open_completions(False, True, True)
+            if opened:
+                return "break"
+
+    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,
+                            *args)
+
+    def _delayed_open_completions(self, *args):
+        self._delayed_completion_id = None
+        if self.text.index("insert") != self._delayed_completion_index:
+            return
+        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")
+        i = j = len(curline)
+        if hp.is_in_string() and (not mode or mode==COMPLETE_FILES):
+            self._remove_autocomplete_window()
+            mode = COMPLETE_FILES
+            while i and curline[i-1] in FILENAME_CHARS:
+                i -= 1
+            comp_start = curline[i:j]
+            j = i
+            while i and curline[i-1] in FILENAME_CHARS + SEPS:
+                i -= 1
+            comp_what = curline[i:j]
+        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:
+                i -= 1
+            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()
+                if not comp_what or \
+                   (not evalfuncs and comp_what.find('(') != -1):
+                    return
+            else:
+                comp_what = ""
+        else:
+            return
+
+        if complete and not comp_what and not comp_start:
+            return
+        comp_lists = self.fetch_completions(comp_what, mode)
+        if not comp_lists[0]:
+            return
+        self.autocompletewindow = self._make_autocomplete_window()
+        self.autocompletewindow.show_window(comp_lists,
+                                            "insert-%dc" % len(comp_start),
+                                            complete,
+                                            mode,
+                                            userWantsWin)
+        return True
+
+    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.
+        """
+        try:
+            rpcclt = self.editwin.flist.pyshell.interp.rpcclt
+        except:
+            rpcclt = None
+        if rpcclt:
+            return rpcclt.remotecall("exec", "get_the_completion_list",
+                                     (what, mode), {})
+        else:
+            if mode == COMPLETE_ATTRIBUTES:
+                if what == "":
+                    namespace = __main__.__dict__.copy()
+                    namespace.update(__main__.__builtins__.__dict__)
+                    bigl = eval("dir()", namespace)
+                    bigl.sort()
+                    if "__all__" in bigl:
+                        smalll = eval("__all__", namespace)
+                        smalll.sort()
+                    else:
+                        smalll = [s for s in bigl if s[:1] != '_']
+                else:
+                    try:
+                        entity = self.get_entity(what)
+                        bigl = dir(entity)
+                        bigl.sort()
+                        if "__all__" in bigl:
+                            smalll = entity.__all__
+                            smalll.sort()
+                        else:
+                            smalll = [s for s in bigl if s[:1] != '_']
+                    except:
+                        return [], []
+
+            elif mode == COMPLETE_FILES:
+                if what == "":
+                    what = "."
+                try:
+                    expandedpath = os.path.expanduser(what)
+                    bigl = os.listdir(expandedpath)
+                    bigl.sort()
+                    smalll = [s for s in bigl if s[:1] != '.']
+                except OSError:
+                    return [], []
+
+            if not smalll:
+                smalll = bigl
+            return smalll, bigl
+
+    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)