Table Of Contents
List Item View Argument Converters¶
バージョン 1.5 で追加.
バージョン 1.10.0 で撤廃: The feature has been deprecated.
The default list item args converter for list adapters is a function (shown below) that takes a row index and a string. It returns a dict with the string as the text item, along with two properties suited for simple text items with a height of 25.
Simple Usage¶
Argument converters may be normal functions or, as in the case of the default args converter, lambdas:
list_item_args_converter = lambda row_index, x: {'text': x,
'size_hint_y': None,
'height': 25}
Advanced Usage¶
Typically, having the argument converter perform a simple mapping suffices.
There are times, however, when more complex manipulation is required. When
using CompositeListItem, it is possible to specify
a list of cls dictionaries. This allows you to compose a single view item
out of multiple classes, each of which can receive their own class constructor
arguments via the kwargs keyword:
args_converter = lambda row_index, rec: \
{'text': rec['text'],
'size_hint_y': None,
'height': 25,
'cls_dicts': [{'cls': ListItemButton,
'kwargs': {'text': rec['text']}},
{'cls': ListItemLabel,
'kwargs': {'text': rec['text'],
'is_representing_cls': True}},
{'cls': ListItemButton,
'kwargs': {'text': rec['text']}}]}
Please see the list_composite.py for a complete example.