Я хочу удалить данные из файла JSON, используя store.delete('key_of_dictionary'), выбрав метку в RecycleView, а затем нажав кнопку «Удалить».
Я сделал свой код для выбора меток и получения значения, но я не могу передать его методу / функции. Метод должен быть в class SelectableLabel(...), как кажется. Я не уверен, как получить доступ к этому классу.
Буду признателен за понимание. Заранее спасибо!
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.label import Label
from kivy.properties import BooleanProperty
from kivy.uix.behaviors import FocusBehavior
from kivy.storage.jsonstore import JsonStore
from kivy.uix.recyclegridlayout import RecycleGridLayout
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from operator import itemgetter
import json
kv_string = """
ScreenManager:
id: manager
Screen:
BoxLayout:
orientation: 'vertical'
canvas:
Color:
rgba: .2,.2,.5,1
Rectangle:
pos: self.pos
size: self.size
GridLayout:
size_hint_y: .3
cols:4
MyButton:
text: 'Rank'
size_hint_x: 0.5
MyButton:
text: 'Ratings'
MyButton:
text: 'Name'
size_hint_x: 2
MyButton:
text: 'Score'
on_press:
#arrange the boxing in ascending or descending order
RecycleView:
data: [{'text': str(x)} for x in app.new_new_sorted_data]
viewclass: 'SelectableLabel'
SelectableRecycleGridLayout:
cols: 4
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: True
touch_multiselect: True
Button:
size_hint_y: .3
text: 'Press to Use Method'
on_press:
SelectableLabel().function()
<SelectableLabel>:
canvas.before:
Color:
rgba: (.0, 0.9, .1, .3) if self.selected else (0, 0, 0, 1)
Rectangle:
pos: self.pos
size: self.size
<MyButton@Button>:
background_color: 0,0,0,1
"""
class SelectableLabel(RecycleDataViewBehavior, Label):
def function(self):
print('Take the value in rv.data[index] if 4 % == 0 then do\nstore.delete(rv.data[index])')
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
def refresh_view_layout(self, rv, index, layout, viewport):
mod = index % 4
size_hints = [(0.5, None), (1, None), (2, None), (1, None)]
layout['size_hint'] = size_hints[mod]
colors = (1,1,1,1), (1,1,1,1), (1,1,1,1), (0,1,1,1)
layout['color'] = colors[mod]
super(SelectableLabel, self).refresh_view_layout(rv, index, layout, viewport)
def refresh_view_attrs(self, rv, index, data):
self.index = index
return super(SelectableLabel, self).refresh_view_attrs(
rv, index, data)
def on_touch_down(self, touch):
if super(SelectableLabel, self).on_touch_down(touch):
return True
if self.collide_point(*touch.pos) and self.selectable:
self.parent.select_with_touch(self.index, touch)
if self.index % 4 == 0:
self.parent.select_with_touch(self.index + 1)
self.parent.select_with_touch(self.index + 2)
self.parent.select_with_touch(self.index + 3)
return
elif self.index % 4 == 1:
self.parent.select_with_touch(self.index + 1)
self.parent.select_with_touch(self.index + 2)
self.parent.select_with_touch(self.index - 1)
return
elif self.index % 4 == 2:
self.parent.select_with_touch(self.index + 1)
self.parent.select_with_touch(self.index - 2)
self.parent.select_with_touch(self.index - 1)
return
elif self.index % 4 == 3:
self.parent.select_with_touch(self.index - 1)
self.parent.select_with_touch(self.index - 2)
self.parent.select_with_touch(self.index - 3)
return
index_list = []
def apply_selection(self, rv, index, is_selected):
self.selected = is_selected
if is_selected:
self.index_list.append(rv.data[index]) if index % 4 == 0 else self.index_list
print(self.index_list) if index % 4 == 0 else ''
#print("selection changed to {0}".format(rv.data[index]))
else:
try:
self.index_list.remove(rv.data[index]) if index % 4 == 0 else self.index_list
print(self.index_list) if index % 4 == 0 else ''
#print("selection removed for {0}".format(rv.data[index]))
except:
pass
class SelectableRecycleGridLayout(FocusBehavior, LayoutSelectionBehavior, RecycleGridLayout):
pass
class MyApp(App):
store = JsonStore('file.json')
store.put('Example: 1', value_1 = 'Rating: C', value_2 = 10, value_3 = 'Zack')
store.put('Example: 2', value_1 = 'Rating: C', value_2 = 13, value_3 = 'Kate')
store.put('Example: 3', value_1 = 'Rating: A', value_2 = 32, value_3 = 'Pete')
store.put('Example: 4', value_1 = 'Rating: B', value_2 = 24, value_3 = 'Toby')
store.put('Example: 5', value_1 = 'Rating: D', value_2 = 03, value_3 = 'Lars')
# ---------------------- v Sorting Data v ----------------------
json_data = open('./file.json')
score_data = json.load(json_data)
newlist = []
newnewlist = []
for x in score_data:
newlist.append(x)
for y in newlist:
newnewlist.append(score_data[str(y)])
print(newlist)
print(newnewlist)
sorted_data = sorted(newnewlist,key=itemgetter('value_2'), reverse = True)
new_sorted_data = []
for z in sorted_data:
new_sorted_data.append(z.values())
new_new_sorted_data = []
for x,y,z in new_sorted_data:
new_new_sorted_data.append(newlist.pop())
new_new_sorted_data.append(x)
new_new_sorted_data.append(y)
new_new_sorted_data.append(z)
# ---------------------- ^ Sorting Data ^ ----------------------
def build(self):
root_widget = Builder.load_string(kv_string)
return root_widget
if __name__ == "__main__":
MyApp().run()