kivy /パイソン：バインドイベントiのツリービュー構造のポップアップオープンその後、状態名には何も入力すると、ノードは、ツリービュー

Question

test.py

import sqlite3 as lite 

from kivy.uix.screenmanager import Screen 
from kivy.app import App 
from kivy.lang import Builder 
from kivy.core.window import Window 
from kivy.uix.popup import Popup 
from kivy.uix.treeview import TreeView, TreeViewLabel, TreeViewNode 
from kivy.uix.label import Label 
from kivy.properties import ObjectProperty 



Window.size = (700, 530) 

con = lite.connect('fact.db') 
con.text_factory = str 
cur = con.cursor() 


def populate_tree_view(tree_view, parent, node): 
    if parent is None: 
     tree_node = tree_view.add_node(TreeViewLabel(text=node['node_id'], 
                is_open=True)) 
    else: 
     tree_node = tree_view.add_node(TreeViewLabel(text=node['node_id'], 
                is_open=True), parent) 

    for child_node in node['children']: 
     populate_tree_view(tree_view, tree_node, child_node) 


tree = [] 
rows = [(1, 'test1', 11), (2, 'test2', 2), (3, 'test3', 3), (4, 'test4', 4), (5, 'test5', 1)] 
for r in rows: 
    tree.append({'node_id': r[1], 'children': []}) 



class TreeViewLabel(Label, TreeViewNode): 
    pass 


class TreeviewGroup(Popup): 
    treeview = ObjectProperty(None) 
    tv = ObjectProperty(None) 
    #ti = ObjectProperty() 

    def __init__(self, **kwargs): 
     super(TreeviewGroup, self).__init__(**kwargs) 
     self.tv = TreeView(root_options=dict(text=""), 
         hide_root=False, 
         indent_level=4) 
     for branch in tree: 
      populate_tree_view(self.tv, None, branch) 
     self.remove_widgets() 
     self.treeview.add_widget(self.tv) 

    def remove_widgets(self): 
     for child in [child for child in self.treeview.children]: 
      self.treeview.remove_widget(child) 

    '''def filter(self, f): 
     self.treeview.clear_widgets() 
     self.tv = TreeView(root_options=dict(text=""), 
          hide_root=False, 
          indent_level=4) 
     new_tree = [] 
     for n in tree: 
      if f.lower() in n['node_id'].lower(): 
       new_tree.append(n) 
     for branch in new_tree: 
      populate_tree_view(self.tv, None, branch) 

     self.treeview.add_widget(self.tv)''' 

    def select_node(self, node): 
     '''Select a node in the tree. 
       ''' 
     if node.no_selection: 
      return 
     if self._selected_node: 
      self._selected_node.is_selected = False 
     node.is_selected = True 
     self._selected_node = node 
     print(node) 

class GroupScreen(Screen): 
    groupName = ObjectProperty(None) 
    popup = ObjectProperty(None) 

    def display_groups(self, instance): 
     if len(instance.text) > 0: 
      if self.popup is None: 
       self.popup = TreeviewGroup() 
      #self.popup.filter(instance.text) 
      self.popup.open() 


    def select_node(self, node): 
     '''Select a node in the tree. 
       ''' 
     if node.no_selection: 
      return 
     if self._selected_node: 
      self._selected_node.is_selected = False 
     node.is_selected = True 
     self._selected_node = node 
     print(node) 


class Group(App): 

    #rows = [(1, 'test1', 111), (2, 'test2', 112), (3, 'test3', 113), (4, 'test4', 114)] 
    def build(self): 
     self.root = Builder.load_file('test.kv') 
     return self.root 


if __name__ == '__main__': 
    Group().run() 

test.kv

#:kivy 1.10.0 

<TreeViewLabel>: 
    on_touch_down: 
     app.root.stateName.text = self.text 
     app.root.popup.dismiss() 

<TreeviewGroup>: 
    id: treeview 
    treeview: treeview 
    title: "Select City" 
    size_hint: None, None 
    size: 400, 400 
    auto_dismiss: False 

    BoxLayout 
     orientation: "vertical" 
     #TextInput: 
      #id: ti 
      #size_hint_y: .1 
      #on_text: root.filter(self.text) 
     BoxLayout: 
      id: treeview 
      #on_press: root.select_node(self.text) 
     Button: 
      size_hint: 1, 0.1 
      text: "Close" 
      on_release: root.dismiss() 


<CustomLabel@Label>: 
    text_size: self.size 
    valign: "middle" 
    padding_x: 5 

<SingleLineTextInput@TextInput>: 
    multiline: False 

<GreenButton@Button>: 
    background_color: 1, 1, 1, 1 
    size_hint_y: None 
    height: self.parent.height * 0.150 

GroupScreen: 
    stateName: stateName 

    GridLayout: 
     cols: 2 
     padding : 30,30 
     spacing: 10, 10 
     row_default_height: '40dp' 

     CustomLabel: 
      text: 'Name' 

     SingleLineTextInput: 
      id: stateName 
      on_text: root.display_groups(self) 

     CustomLabel: 
      text: 'Code' 

     CustomLabel: 
      text: '08' 


     GreenButton: 
      text: 'Ok' 
      #on_press: root.insert_data(stateName.text, cityName.text, shortName.text , pinCode.text) 


     GreenButton: 
      text: 'Cancel' 
      on_press: app.stop() 

     Label: 

     Label: 

で選択されている場合。

ノードをクリックすると状態コードがdatabase.Andから取得され、状態code.atの前に「08」が静的なvalue.databaseクエリーはありませんが、状態コードの前に値を置いてから.pyファイルを渡してください。そして、ポップアップを閉じるべきです。

Answer 1

あなたはKVで、その後変更

... 
from kivy.properties import ObjectProperty, StringProperty 

... 

class GroupScreen(Screen): 
    groupName = ObjectProperty(None) 
    popup = ObjectProperty(None) 
    statecode = StringProperty('08') 

... 

    def select_node(self, node): 
     '''Select a node in the tree. 
      ''' 
     for r in rows: 
      if node.text == r[1]: 
       self.statecode = str(r[2]) 
       break 

をトリガするselect_nodeメソッドを編集し、statecodeを表しますGroupscreenクラスに文字列プロパティの属性を追加することによってこれを行うことができます。

<TreeViewLabel>: 
    on_touch_down: 
     app.root.stateName.text = self.text 
     app.root.select_node(self) 
     app.root.popup.dismiss() 

... 

GroupScreen: 
    stateName: stateName 

    GridLayout: 
     cols: 2 
     padding : 30,30 
     spacing: 10, 10 
     row_default_height: '40dp' 

     CustomLabel: 
      text: 'State Name' 

     SingleLineTextInput: 
      id: stateName 
      on_text: root.display_groups(self) 

     CustomLabel: 
      text: 'State Code' 

     CustomLabel: 
      text: root.statecode 

... 

を