Mercurial > cpython-lru_cache-weakref
annotate Lib/idlelib/WindowList.py @ 87690:66c1c9f32567 default tip
Add use_weakref option to functools.lru_cache
The use_weakref option makes lru_cache create weak references to the function
arguments when creating the cache key, which prevents them from staying in the
memory forever even after all other references to them are gone.
This is a proof of concept for http://bugs.python.org/issue19859
| author | Radomir Dopieralski <devel@sheep.art.pl> |
|---|---|
| date | Tue, 03 Dec 2013 16:02:48 +0100 |
| parents | 560b2f52952c |
| children |
| rev | line source |
|---|---|
|
47130
ef4cca2d6171
Tkinter, step 2: adapt imports.
Georg Brandl <georg@python.org>
parents:
42725
diff
changeset
|
1 from tkinter import * |
| 13975 | 2 |
| 3 class WindowList: | |
| 4 | |
| 5 def __init__(self): | |
| 6 self.dict = {} | |
| 7 self.callbacks = [] | |
| 8 | |
| 9 def add(self, window): | |
| 10 window.after_idle(self.call_callbacks) | |
| 11 self.dict[str(window)] = window | |
| 12 | |
| 13 def delete(self, window): | |
| 14 try: | |
| 15 del self.dict[str(window)] | |
| 16 except KeyError: | |
| 17 # Sometimes, destroy() is called twice | |
| 18 pass | |
| 19 self.call_callbacks() | |
| 20 | |
| 21 def add_windows_to_menu(self, menu): | |
| 22 list = [] | |
|
42725
fa9a40ef0780
Conform to py3k dict.{keys, items, values} with some advice from 2b3
Kurt B. Kaiser <kbk@shore.net>
parents:
40775
diff
changeset
|
23 for key in self.dict: |
| 13975 | 24 window = self.dict[key] |
| 25 try: | |
| 26 title = window.get_title() | |
| 27 except TclError: | |
| 28 continue | |
|
49887
560b2f52952c
#4455: IDLE failed to display the windows list when two windows have the same title.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
47130
diff
changeset
|
29 list.append((title, key, window)) |
| 13975 | 30 list.sort() |
|
49887
560b2f52952c
#4455: IDLE failed to display the windows list when two windows have the same title.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
47130
diff
changeset
|
31 for title, key, window in list: |
| 13975 | 32 menu.add_command(label=title, command=window.wakeup) |
| 33 | |
| 34 def register_callback(self, callback): | |
| 35 self.callbacks.append(callback) | |
| 36 | |
| 37 def unregister_callback(self, callback): | |
| 38 try: | |
|
18495
c4f75857502a
py-cvs merge, correct indentation
Steven M. Gava <elguavas@python.net>
parents:
13975
diff
changeset
|
39 self.callbacks.remove(callback) |
| 13975 | 40 except ValueError: |
| 41 pass | |
| 42 | |
| 43 def call_callbacks(self): | |
| 44 for callback in self.callbacks: | |
| 45 try: | |
| 46 callback() | |
| 47 except: | |
|
37811
6d8e3e65947f
Fix two errors that prevented "make libinstall" from working:
Guido van Rossum <guido@python.org>
parents:
37042
diff
changeset
|
48 t, v, tb = sys.exc_info() |
|
40775
4cdf21a0dbbc
Fix most trivially-findable print statements.
Guido van Rossum <guido@python.org>
parents:
37811
diff
changeset
|
49 print("warning: callback failed in WindowList", t, ":", v) |
| 13975 | 50 |
| 51 registry = WindowList() | |
| 52 | |
| 53 add_windows_to_menu = registry.add_windows_to_menu | |
| 54 register_callback = registry.register_callback | |
| 55 unregister_callback = registry.unregister_callback | |
| 56 | |
| 57 | |
| 58 class ListedToplevel(Toplevel): | |
| 59 | |
| 60 def __init__(self, master, **kw): | |
| 61 Toplevel.__init__(self, master, kw) | |
| 62 registry.add(self) | |
|
33218
066c7890cd61
1. If user passes a non-existant filename on the commandline, just open
Kurt B. Kaiser <kbk@shore.net>
parents:
29367
diff
changeset
|
63 self.focused_widget = self |
| 13975 | 64 |
| 65 def destroy(self): | |
| 66 registry.delete(self) | |
| 67 Toplevel.destroy(self) | |
| 25571 | 68 # If this is Idle's last window then quit the mainloop |
| 69 # (Needed for clean exit on Windows 98) | |
| 70 if not registry.dict: | |
| 71 self.quit() | |
| 13975 | 72 |
|
29367
ca20c3cbc956
1. Update WindowList registry when filename changes so that
Kurt B. Kaiser <kbk@shore.net>
parents:
25571
diff
changeset
|
73 def update_windowlist_registry(self, window): |
|
ca20c3cbc956
1. Update WindowList registry when filename changes so that
Kurt B. Kaiser <kbk@shore.net>
parents:
25571
diff
changeset
|
74 registry.call_callbacks() |
|
ca20c3cbc956
1. Update WindowList registry when filename changes so that
Kurt B. Kaiser <kbk@shore.net>
parents:
25571
diff
changeset
|
75 |
| 13975 | 76 def get_title(self): |
| 77 # Subclass can override | |
| 78 return self.wm_title() | |
| 79 | |
| 80 def wakeup(self): | |
| 81 try: | |
| 82 if self.wm_state() == "iconic": | |
|
33218
066c7890cd61
1. If user passes a non-existant filename on the commandline, just open
Kurt B. Kaiser <kbk@shore.net>
parents:
29367
diff
changeset
|
83 self.wm_withdraw() |
| 13975 | 84 self.wm_deiconify() |
|
33218
066c7890cd61
1. If user passes a non-existant filename on the commandline, just open
Kurt B. Kaiser <kbk@shore.net>
parents:
29367
diff
changeset
|
85 self.tkraise() |
|
066c7890cd61
1. If user passes a non-existant filename on the commandline, just open
Kurt B. Kaiser <kbk@shore.net>
parents:
29367
diff
changeset
|
86 self.focused_widget.focus_set() |
| 13975 | 87 except TclError: |
| 88 # This can happen when the window menu was torn off. | |
| 89 # Simply ignore it. | |
| 90 pass |