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recycleviewの内部動作検証
from random import sample
from string import ascii_lowercase
from kivy.config import Config
Config.set('modules', 'inspector', '')
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.factory import Factory
class CustomRecycleBoxLayout(Factory.RecycleBoxLayout):
def add_widget(self, widget, *args, **kwargs):
print('add_widget:', str(widget.uid), args, kwargs)
return super().add_widget(widget, *args, **kwargs)
def remove_widget(self, widget, *args, **kwargs):
print('remove_widget:', str(widget.uid), args, kwargs)
return super().remove_widget(widget, *args, **kwargs)
kv = """
<Row@BoxLayout>:
canvas.before:
Color:
rgba: 0.5, 0.5, 0.5, 1
Rectangle:
size: self.size
pos: self.pos
value: ''
ToggleButton:
text: root.value
<Test>:
canvas:
Color:
rgba: 0.3, 0.3, 0.3, 1
Rectangle:
size: self.size
pos: self.pos
rv: rv
orientation: 'vertical'
GridLayout:
cols: 3
rows: 2
size_hint_y: None
height: dp(108)
padding: dp(8)
spacing: dp(16)
Button:
text: 'Populate list'
on_press: root.populate()
Button:
text: 'Sort list'
on_press: root.sort()
Button:
text: 'Clear list'
on_press: root.clear()
BoxLayout:
spacing: dp(8)
Button:
text: 'Insert new item'
on_press: root.insert(new_item_input.text)
TextInput:
id: new_item_input
size_hint_x: 0.6
hint_text: 'value'
padding: dp(10), dp(10), 0, 0
BoxLayout:
spacing: dp(8)
Button:
text: 'Update first item'
on_press: root.update(update_item_input.text)
TextInput:
id: update_item_input
size_hint_x: 0.6
hint_text: 'new value'
padding: dp(10), dp(10), 0, 0
Button:
text: 'Remove first item'
on_press: root.remove()
RecycleView:
id: rv
scroll_type: ['bars', 'content']
scroll_wheel_distance: dp(114)
bar_width: dp(10)
viewclass: 'Row'
CustomRecycleBoxLayout:
id: id_boxlayout
default_size: None, dp(56)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
spacing: dp(2)
"""
Builder.load_string(kv)
class Test(BoxLayout):
def populate(self):
self.rv.data = [{'value': ''.join(sample(ascii_lowercase, 6))}
for x in range(50)]
def sort(self):
self.rv.data = sorted(self.rv.data, key=lambda x: x['value'])
def clear(self):
self.rv.data = []
def insert(self, value):
print('----insert----')
print('Rowの順番', [(str(child.uid), child.value, ) for child in self.ids.id_boxlayout.children])
self.rv.data.insert(0, {'value': value or 'default value'})
def update(self, value):
if self.rv.data:
self.rv.data[0]['value'] = value or 'default new value'
self.rv.refresh_from_data()
def remove(self):
if self.rv.data:
self.rv.data.pop(0)
class TestApp(App):
def build(self):
return Test()
if __name__ == '__main__':
TestApp().run()
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