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bitwidgets: Make ListView resilient to empty models

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June Tate-Gans 2021-05-09 23:11:15 -05:00
parent fa7a84ca3f
commit b2cc80e404
1 changed files with 5 additions and 0 deletions
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5
g13gui/bitwidgets/listview.py
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@ -45,14 +45,19 @@ class ListView(Widget):
def selection(self): def selection(self):
items = sorted(self._model) items = sorted(self._model)
if self._selectionIdx >= len(items):
return None
return items[self._selectionIdx] return items[self._selectionIdx]
def markedItem(self): def markedItem(self):
items = sorted(self._model) items = sorted(self._model)
if self._markedIdx >= len(items):
return None
return items[self._markedIdx] return items[self._markedIdx]
def nextSelection(self): def nextSelection(self):
maxIdx = len(self._model) - 1 maxIdx = len(self._model) - 1
maxIdx = 0 if maxIdx < 0 else maxIdx
idx = self.selectionIndex idx = self.selectionIndex
idx += 1 idx += 1