mirror of https://github.com/kivy/kivy.git
74 lines
2.3 KiB
Python
74 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
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from kivy.uix.listview import ListView
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from kivy.uix.floatlayout import FloatLayout
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from kivy.clock import Clock
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from kivy.adapters.listadapter import ListAdapter
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from kivy.adapters.models import SelectableDataItem
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from kivy.uix.listview import ListItemButton
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from random import choice
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from string import ascii_uppercase, digits
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import random
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class DataItem(SelectableDataItem):
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def __init__(self, **kwargs):
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super(DataItem, self).__init__(**kwargs)
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self.name = ''.join(choice(ascii_uppercase + digits) for x in range(6))
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class MainView(FloatLayout):
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"""
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Implementation of a ListView using the kv language.
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"""
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def __init__(self, **kwargs):
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super(MainView, self).__init__(**kwargs)
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data_items = []
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data_items.append(DataItem())
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data_items.append(DataItem())
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data_items.append(DataItem())
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list_item_args_converter = lambda row_index, obj: {'text': obj.name,
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'size_hint_y': None,
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'height': 25}
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self.list_adapter = \
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ListAdapter(data=data_items,
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args_converter=list_item_args_converter,
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selection_mode='single',
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propagate_selection_to_data=False,
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allow_empty_selection=False,
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cls=ListItemButton)
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self.list_view = ListView(adapter=self.list_adapter)
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self.add_widget(self.list_view)
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self.toggle = 'adding'
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Clock.schedule_interval(self.update_list_data, 1)
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def update_list_data(self, dt):
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items = self.list_adapter.data
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if self.toggle == 'adding':
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item = DataItem(name='New ' * random.randint(1, 2))
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items.append(item)
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self.toggle = 'changing'
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print('added ' + item.name)
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else:
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random_index = random.randint(0, len(items) - 1)
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item = items[random_index]
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items[random_index] = DataItem()
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self.toggle = 'adding'
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print('changed {0} to {1}'.format(item.name,
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items[random_index].name))
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if __name__ == '__main__':
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from kivy.base import runTouchApp
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runTouchApp(MainView(width=800))
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