mirror of https://github.com/kivy/kivy.git
86 lines
3.0 KiB
Python
86 lines
3.0 KiB
Python
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from kivy.adapters.listadapter import ListAdapter
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from kivy.adapters.mixins.selection import SelectableItem
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from kivy.uix.listview import ListItemButton, ListItemLabel, ListView
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from kivy.uix.boxlayout import BoxLayout
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from kivy.uix.gridlayout import GridLayout
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from kivy.properties import ObjectProperty, ListProperty
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class CompositeListItem(SelectableItem, BoxLayout):
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# ListItem sublasses Button, which has background_color.
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# For a composite list item, we must add this property.
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background_color = ListProperty([1, 1, 1, 1])
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selected_color = ListProperty([1., 0., 0., 1])
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deselected_color = ListProperty([.33, .33, .33, 1])
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left_button = ObjectProperty(None)
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middle_label = ObjectProperty(None)
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right_button = ObjectProperty(None)
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def __init__(self, **kwargs):
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super(CompositeListItem, self).__init__(**kwargs)
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# For the component list items in our composite list item, we want
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# their individual selection to select the composite. Here we pass
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# an argument for the list_adapter, required by the SelectableItem
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# mixing, and a selection_target argument, setting it to self (to
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# this composite list item).
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kwargs['selection_target'] = self
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kwargs['text']="left-{0}".format(kwargs['text'])
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self.left_button = ListItemButton(**kwargs)
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kwargs['text']="middle-{0}".format(kwargs['text'])
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self.middle_label = ListItemLabel(**kwargs)
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kwargs['text']="right-{0}".format(kwargs['text'])
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self.right_button = ListItemButton(**kwargs)
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self.add_widget(self.left_button)
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self.add_widget(self.middle_label)
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self.add_widget(self.right_button)
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def select(self, *args):
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self.background_color = self.selected_color
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def deselect(self, *args):
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self.background_color = self.deselected_color
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def __repr__(self):
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if self.middle_label is not None:
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return self.middle_label.text
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else:
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return 'empty'
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class CompositeListItemListView(GridLayout):
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'''Implementation of a list view with a composite list item class, with
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two buttons and a label.
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'''
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def __init__(self, **kwargs):
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kwargs['cols'] = 2
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kwargs['size_hint'] = (1.0, 1.0)
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super(CompositeListItemListView, self).__init__(**kwargs)
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# Here we create a list adapter with some item strings, passing our
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# CompositeListItem as the list item view class, and then we create a
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# list view using this adapter:
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item_strings = ["{0}".format(index) for index in xrange(100)]
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list_adapter = ListAdapter(data=item_strings,
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selection_mode='single',
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allow_empty_selection=False,
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cls=CompositeListItem)
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list_view = ListView(adapter=list_adapter)
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self.add_widget(list_view)
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if __name__ == '__main__':
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from kivy.base import runTouchApp
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runTouchApp(CompositeListItemListView(width=800))
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