150 lines
3.6 KiB
Python
150 lines
3.6 KiB
Python
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'''
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A form generator, using random data, but can be data driven (json or whatever)
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Shows that you can use the key_viewclass attribute of RecycleView to select a
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different Widget for each item.
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'''
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from random import choice, choices
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from string import ascii_lowercase
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from kivy.app import App
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from kivy.lang import Builder
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from kivy import properties as P
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KV = r'''
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<RVTextInput,RVCheckBox,RVSpinner>:
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size_hint_y: None
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height: self.minimum_height
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index: None
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title: ''
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<RVTextInput@BoxLayout>:
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value: ''
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Label:
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text: root.title
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size_hint_y: None
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height: self.texture_size[1]
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TextInput:
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text: root.value
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on_text: app.handle_update(self.text, root.index)
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size_hint_y: None
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height: dp(40)
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multiline: False
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<RVCheckBox@BoxLayout>:
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value: False
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Label:
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text: root.title
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size_hint_y: None
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height: self.texture_size[1]
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CheckBox:
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active: root.value
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on_active: app.handle_update(self.active, root.index)
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size_hint_y: None
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height: dp(40)
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<RVSpinner@BoxLayout>:
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value: ''
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values: []
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Label:
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text: root.title
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size_hint_y: None
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height: self.texture_size[1]
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Spinner:
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text: root.value
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values: root.values
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size_hint_y: None
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height: dp(40)
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on_text: app.handle_update(self.text, root.index)
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FloatLayout:
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RecycleView:
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id: rv
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data: app.data
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key_viewclass: 'widget'
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size_hint_x: 1
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RecycleBoxLayout:
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orientation: 'vertical'
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size_hint_y: None
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height: self.minimum_height
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default_size_hint: 1, None
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'''
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class Application(App):
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'''A form manager demonstrating the power of RecycleView's key_viewclass
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property.
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'''
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data = P.ListProperty()
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def build(self):
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root = Builder.load_string(KV)
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rv = root.ids.rv
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self.data = [
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self.create_random_input(rv, index)
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for index in range(20)
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]
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return root
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def handle_update(self, value, index):
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if None not in (index, value):
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self.data[index]['value'] = value
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def create_random_input(self, rv, index):
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return choice((
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self.create_textinput,
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self.create_checkbox,
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self.create_spinner
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))(rv, index)
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def create_spinner(self, rv, index):
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"""
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create a dict of data for a spinner
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"""
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return {
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'index': index,
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'widget': 'RVSpinner',
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'value': '',
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'values': [
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letter * 5
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for letter in ascii_lowercase[:5]
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],
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'ready': True,
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}
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def create_checkbox(self, rv, index):
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"""
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create a dict of data for a checkbox
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"""
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return {
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'index': index,
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'widget': 'RVCheckBox',
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'value': choice((True, False)),
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'title': ''.join(choices(ascii_lowercase, k=10)),
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'ready': True,
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}
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def create_textinput(self, rv, index):
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"""
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create a dict of data for a textinput
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"""
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return {
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'index': index,
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'widget': 'RVTextInput',
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'value': ''.join(choices(ascii_lowercase, k=10)),
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'title': ''.join(choices(ascii_lowercase, k=10)),
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'ready': True,
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}
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if __name__ == "__main__":
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Application().run()
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