本文整理汇总了Python中kivy.adapters.listadapter.ListAdapter.check_for_empty_selection方法的典型用法代码示例。如果您正苦于以下问题：Python ListAdapter.check_for_empty_selection方法的具体用法？Python ListAdapter.check_for_empty_selection怎么用？Python ListAdapter.check_for_empty_selection使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类kivy.adapters.listadapter.ListAdapter的用法示例。
在下文中一共展示了ListAdapter.check_for_empty_selection方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_list_adapter_selection_mode_single
# 需要导入模块: from kivy.adapters.listadapter import ListAdapter [as 别名]
# 或者: from kivy.adapters.listadapter.ListAdapter import check_for_empty_selection [as 别名]
def test_list_adapter_selection_mode_single(self):
list_adapter = ListAdapter(data=fruit_data_items,
args_converter=self.args_converter,
selection_mode='single',
propagate_selection_to_data=True,
allow_empty_selection=True,
cls=ListItemButton)
list_view = ListView(adapter=list_adapter)
# The reason why len(selection) == 0 here is because ListView,
# at the end of its __init__(), calls check_for_empty_selection()
# and does NOT trigger the initial selection, because we set
# allow_empty_selection = True.
self.assertEqual(len(list_adapter.selection), 0)
list_adapter.check_for_empty_selection()
# Nothing should have changed by that call, because still we have
# allow_empty_selection = True, so no action in that check.
self.assertEqual(len(list_adapter.selection), 0)
# Still no selection, but triggering a selection should make len = 1.
# So, first we need to select the associated data item.
self.assertEqual(fruit_data_items[0].name, 'Apple')
fruit_data_items[0].is_selected = True
apple = list_view.adapter.get_view(0)
self.assertEqual(apple.text, 'Apple')
self.assertTrue(apple.is_selected)
self.assertEqual(len(list_adapter.selection), 1)示例2: test_list_adapter_selection_mode_single_auto_selection
# 需要导入模块: from kivy.adapters.listadapter import ListAdapter [as 别名]
# 或者: from kivy.adapters.listadapter.ListAdapter import check_for_empty_selection [as 别名]
def test_list_adapter_selection_mode_single_auto_selection(self):
list_adapter = ListAdapter(data=fruit_data_items,
args_converter=self.args_converter,
selection_mode='single',
allow_empty_selection=False,
cls=ListItemButton)
list_view = ListView(adapter=list_adapter)
# The reason why len(selection) == 1 here is because ListView,
# at the end of its __init__(), calls check_for_empty_selection()
# and triggers the initial selection, because allow_empty_selection is
# False.
apple = list_view.adapter.cached_views[0]
self.assertEqual(list_adapter.selection[0], apple)
self.assertEqual(len(list_adapter.selection), 1)
list_adapter.check_for_empty_selection()
# Nothing should have changed for len, as we already have a selection.
self.assertEqual(len(list_adapter.selection), 1)示例3: test_list_adapter_selection_mode_none
# 需要导入模块: from kivy.adapters.listadapter import ListAdapter [as 别名]
# 或者: from kivy.adapters.listadapter.ListAdapter import check_for_empty_selection [as 别名]
def test_list_adapter_selection_mode_none(self):
list_adapter = ListAdapter(data=fruit_data_items,
args_converter=self.args_converter,
selection_mode='none',
allow_empty_selection=True,
cls=ListItemButton)
self.assertEqual(sorted([obj.name for obj in list_adapter.data]),
['Apple', 'Avocado', 'Banana', 'Cantaloupe', 'Cherry', 'Grape',
'Grapefruit', 'Honeydew', 'Kiwifruit', 'Lemon', 'Lime',
'Nectarine', 'Orange', 'Peach', 'Pear', 'Pineapple', 'Plum',
'Strawberry', 'Tangerine', 'Watermelon'])
# The reason why len(selection) == 0 here is because it is ListView,
# at the end of its __init__(), that calls check_for_empty_selection()
# and triggers the initial selection, and we didn't make a ListView.
self.assertEqual(len(list_adapter.selection), 0)
list_adapter.check_for_empty_selection()
self.assertEqual(len(list_adapter.selection), 0)