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Corrected some bugs in AutoComplete. Also, Page Up/Down in ACW implemented; 

mouse and cursor selection in ACWindow implemented; double Tab inserts current
selection and closes ACW (similar to double-click and Return); scroll wheel now
works in ACW.  Added AutoComplete instructions to IDLE Help.
Backport of r53679
This commit is contained in:
Kurt B. Kaiser 2008-02-14 04:11:52 +00:00
parent 1df323a196
commit 60d9f8df38
3 changed files with 104 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
Lib/idlelib/AutoCompleteWindow.py
View File

@ -10,13 +10,14 @@ HIDE_SEQUENCES = ("<FocusOut>", "<ButtonPress>")
KEYPRESS_VIRTUAL_EVENT_NAME = "<<autocompletewindow-keypress>>"
# We need to bind event beyond <Key> so that the function will be called
# before the default specific IDLE function
KEYPRESS_SEQUENCES = ("<Key>", "<Key-BackSpace>", "<Key-Return>",
"<Key-Up>", "<Key-Down>", "<Key-Home>", "<Key-End>")
KEYPRESS_SEQUENCES = ("<Key>", "<Key-BackSpace>", "<Key-Return>", "<Key-Tab>",
"<Key-Up>", "<Key-Down>", "<Key-Home>", "<Key-End>",
"<Key-Prior>", "<Key-Next>")
KEYRELEASE_VIRTUAL_EVENT_NAME = "<<autocompletewindow-keyrelease>>"
KEYRELEASE_SEQUENCE = "<KeyRelease>"
LISTUPDATE_SEQUENCE = "<ButtonRelease>"
LISTUPDATE_SEQUENCE = "<B1-ButtonRelease>"
WINCONFIG_SEQUENCE = "<Configure>"
DOUBLECLICK_SEQUENCE = "<Double-ButtonRelease>"
DOUBLECLICK_SEQUENCE = "<B1-Double-ButtonRelease>"
class AutoCompleteWindow:
@ -49,6 +50,8 @@ class AutoCompleteWindow:
# event ids
self.hideid = self.keypressid = self.listupdateid = self.winconfigid \
= self.keyreleaseid = self.doubleclickid = None
# Flag set if last keypress was a tab
self.lastkey_was_tab = False
def _change_start(self, newstart):
i = 0
@ -118,11 +121,6 @@ class AutoCompleteWindow:
i = 0
while i < len(lts) and i < len(selstart) and lts[i] == selstart[i]:
i += 1
previous_completion = self.completions[cursel - 1]
while cursel > 0 and selstart[:i] <= previous_completion:
i += 1
if selstart == previous_completion:
break # maybe we have a duplicate?
newstart = selstart[:i]
self._change_start(newstart)
@ -206,7 +204,7 @@ class AutoCompleteWindow:
self.keyrelease_event)
self.widget.event_add(KEYRELEASE_VIRTUAL_EVENT_NAME,KEYRELEASE_SEQUENCE)
self.listupdateid = listbox.bind(LISTUPDATE_SEQUENCE,
self.listupdate_event)
self.listselect_event)
self.winconfigid = acw.bind(WINCONFIG_SEQUENCE, self.winconfig_event)
self.doubleclickid = listbox.bind(DOUBLECLICK_SEQUENCE,
self.doubleclick_event)
@ -228,11 +226,12 @@ class AutoCompleteWindow:
return
self.hide_window()
def listupdate_event(self, event):
def listselect_event(self, event):
if not self.is_active():
return
self.userwantswindow = True
self._selection_changed()
cursel = int(self.listbox.curselection()[0])
self._change_start(self.completions[cursel])
def doubleclick_event(self, event):
# Put the selected completion in the text, and close the list
@ -248,7 +247,8 @@ class AutoCompleteWindow:
state = event.mc_state
else:
state = 0
if keysym != "Tab":
self.lastkey_was_tab = False
if (len(keysym) == 1 or keysym in ("underscore", "BackSpace")
or (self.mode==AutoComplete.COMPLETE_FILES and keysym in
("period", "minus"))) \
@ -330,12 +330,20 @@ class AutoCompleteWindow:
self.listbox.select_clear(cursel)
self.listbox.select_set(newsel)
self._selection_changed()
self._change_start(self.completions[newsel])
return "break"
elif (keysym == "Tab" and not state):
# The user wants a completion, but it is handled by AutoComplete
# (not AutoCompleteWindow), so ignore.
if self.lastkey_was_tab:
# two tabs in a row; insert current selection and close acw
cursel = int(self.listbox.curselection()[0])
self._change_start(self.completions[cursel])
self.hide_window()
return "break"
else:
# first tab; let AutoComplete handle the completion
self.userwantswindow = True
self.lastkey_was_tab = True
return
elif reduce(lambda x, y: x or y,

6
Lib/idlelib/NEWS.txt
View File

@ -3,6 +3,12 @@ What's New in IDLE 1.2.2c1?
*Release date: XX-FEB-2008*
- Corrected some bugs in AutoComplete. Also, Page Up/Down in ACW implemented;
mouse and cursor selection in ACWindow implemented; double Tab inserts
current selection and closes ACW (similar to double-click and Return); scroll
wheel now works in ACW. Added AutoComplete instructions to IDLE Help.
(backport r53679)
- Avoid hang when encountering a duplicate in a completion list. Bug 1571112.
(backport r53042)

73
Lib/idlelib/help.txt
View File

@ -44,6 +44,10 @@ Edit Menu:
Find in Files... -- Open a search dialog box for searching files
Replace... -- Open a search-and-replace dialog box
Go to Line -- Ask for a line number and show that line
Show Calltip -- Open a small window with function param hints
Show Completions -- Open a scroll window allowing selection keywords
and attributes. (see '*TIPS*', below)
Show Parens -- Highlight the surrounding parenthesis
Expand Word -- Expand the word you have typed to match another
word in the same buffer; repeat to get a
different expansion
@ -91,6 +95,7 @@ Options Menu:
Code Context -- Open a pane at the top of the edit window which
shows the block context of the section of code
which is scrolling off the top or the window.
(Not present in Shell window.)
Windows Menu:
@ -138,8 +143,11 @@ Basic editing and navigation:
Control-left/right Arrow moves by words in a strange but useful way.
Home/End go to begin/end of line.
Control-Home/End go to begin/end of file.
Some useful Emacs bindings (Control-a, Control-e, Control-k, etc.)
are inherited from Tcl/Tk.
Some useful Emacs bindings are inherited from Tcl/Tk:
Control-a beginning of line
Control-e end of line
Control-k kill line (but doesn't put it in clipboard)
Control-l center window around the insertion point
Standard Windows bindings may work on that platform.
Keybindings are selected in the Settings Dialog, look there.
@ -155,6 +163,52 @@ Automatic indentation:
See also the indent/dedent region commands in the edit menu.
Completions:
Completions are supplied for functions, classes, and attributes of
classes, both built-in and user-defined. Completions are also provided
for filenames.
The AutoCompleteWindow (ACW) will open after a predefined delay
(default is two seconds) after a '.' or (in a string) an os.sep is
typed. If after one of those characters (plus zero or more other
characters) you type a Tab the ACW will open immediately if a possible
continuation is found.
If there is only one possible completion for the characters entered, a
Tab will supply that completion without opening the ACW.
'Show Completions' will force open a completions window. In an empty
string, this will contain the files in the current directory. On a
blank line, it will contain the built-in and user-defined functions and
classes in the current name spaces, plus any modules imported. If some
characters have been entered, the ACW will attempt to be more specific.
If string of characters is typed, the ACW selection will jump to the
entry most closely matching those characters. Entering a Tab will cause
the longest non-ambiguous match to be entered in the Edit window or
Shell. Two Tabs in a row will supply the current ACW selection, as
will Return or a double click. Cursor keys, Page Up/Down, mouse
selection, and the scrollwheel all operate on the ACW.
'Hidden' attributes can be accessed by typing the beginning of hidden
name after a '.'. e.g. '_'. This allows access to modules with
'__all__' set, or to class-private attributes.
Completions and the 'Expand Word' facility can save a lot of typing!
Completions are currently limited to those in the namespaces. Names in
an Edit window which are not via __main__ or sys.modules will not be
found. Run the module once with your imports to correct this
situation. Note that IDLE itself places quite a few modules in
sys.modules, so much can be found by default, e.g. the re module.
If you don't like the ACW popping up unbidden, simply make the delay
longer or disable the extension. OTOH, you could make the delay zero.
You could also switch off the CallTips extension. (We will be adding
a delay to the call tip window.)
Python Shell window:
Control-c interrupts executing command.
@ -211,3 +265,18 @@ Running without a subprocess:
re-import any specific items (e.g. from foo import baz) if the changes
are to take effect. For these reasons, it is preferable to run IDLE
with the default subprocess if at all possible.
Extensions:
IDLE contains an extension facility. See the beginning of
config-extensions.def in the idlelib directory for further information.
The default extensions are currently:
FormatParagraph
AutoExpand
ZoomHeight
ScriptBinding
CallTips
ParenMatch
AutoComplete
CodeContext