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Prevent misbehaving plugins that delete shortcut actions without unregistering them from causing crashes

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Kovid Goyal 2014-11-21 07:59:17 +05:30
parent 95d9151a5c
commit cc4452f072
1 changed files with 8 additions and 4 deletions
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10
src/calibre/gui2/keyboard.py
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@ -10,6 +10,7 @@ __docformat__ = 'restructuredtext en'
from collections import OrderedDict
from functools import partial
import sip
from PyQt5.Qt import (QObject, QKeySequence, QAbstractItemModel, QModelIndex,
Qt, QStyledItemDelegate, QTextDocument, QStyle, pyqtSignal, QFrame,
QApplication, QSize, QRectF, QWidget, QTreeView,
@ -45,7 +46,7 @@ def keysequence_from_event(ev): # {{{
def finalize(shortcuts, custom_keys_map={}): # {{{
'''
Resolve conflicts and assign keys to every action in shorcuts, which must
Resolve conflicts and assign keys to every action in shortcuts, which must
be a OrderedDict. User specified mappings of unique names to keys (as a
list of strings) should be passed in in custom_keys_map. Return a mapping
of unique names to resolved keys. Also sets the set_to_default member
@ -53,6 +54,11 @@ def finalize(shortcuts, custom_keys_map={}): # {{{
'''
seen, keys_map = {}, {}
for unique_name, shortcut in shortcuts.iteritems():
ac = shortcut['action']
if ac is None or sip.isdeleted(ac):
if ac is not None and DEBUG:
prints('Shortcut %r has a deleted action' % unique_name)
continue
custom_keys = custom_keys_map.get(unique_name, None)
if custom_keys is None:
candidates = shortcut['default_keys']
@ -75,8 +81,6 @@ def finalize(shortcuts, custom_keys_map={}): # {{{
keys = tuple(keys)
keys_map[unique_name] = keys
ac = shortcut['action']
if ac is not None:
ac.setShortcuts(list(keys))
return keys_map