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Make it possible to use NeighborList without items

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This commit is contained in:
Florian Bruhin 2014-02-20 20:45:30 +01:00
parent 7d878fec7b
commit 7d11790d35
1 changed files with 7 additions and 2 deletions
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9
qutebrowser/utils/types.py
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@ -37,7 +37,7 @@ class NeighborList:
WRAP = 1
RAISE = 2
def __init__(self, items, default=_UNSET, mode=BLOCK):
def __init__(self, items=None, default=_UNSET, mode=RAISE):
"""Constructor.
Args:
@ -49,7 +49,10 @@ class NeighborList:
RAISE: Raise an IndexError.
"""
self._items = items
if items is None:
self._items = []
else:
self._items = items
self._default = default
if default is not _UNSET:
self.idx = self._items.index(default)
@ -74,6 +77,8 @@ class NeighborList:
"""
# FIXME - zooming somehow wraps...
if not self._items:
raise IndexError("No items found!")
try:
if self.idx + offset > 0:
new = self._items[self.idx + offset]