键入内容然后用树视图打开新窗口

Question

a.py

import kivy

kivy.require('1.9.0')  # replace with your current kivy version !
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


Window.size = (500, 330)


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

class GroupScreen(Screen):
    pass

class Group(App):
    #cur.execute("SELECT * FROM `groups` order by group_id asc")
    #rows = cur.fetchall()

    rows = [(1, 'Branch/Dividions', ''), (2, 'Capital Account', 'Reserve & Surplus')]

    def build(self):
        self.root = Builder.load_file('a.kv')
        return self.root



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

a.kv

GroupScreen:

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

        Label:
            text: 'Group'

        SingleLineTextInput:
            id: groupName

        Label:
            text: 'Leadger No.'

        SingleLineTextInput:
            id: groupCode

        GreenButton:
            text: 'Ok'

        GreenButton:
            text: 'Cancel'

        Label:

        Label:



<SingleLineTextInput@TextInput>:
    multiline: False


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

[！[在此处输入图像说明] [1]] [1]

我有a.py和a.kv文件  1.当我在Test textBox中键入任何关键字时，应该打开一个带有treeview结构的新窗口  2.当从树视图中选择任何值时，它将被放置在文本框中，应该禁用手动输入。

有人可以帮助我吗？

Answer 1

以下示例使用 on_text 事件来调用包含 treeview 和取消按钮的弹出小部件。每当文本发生变化时，都会调度on_text事件。

实施例

main.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 = (500, 330)

# con = lite.connect('demo.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 = [{'node_id': 'Capital Account',
         'children': [{'node_id': 'Reserves & Surplus',
                       'children': [{'node_id': '1.1.1',
                                     'children': [{'node_id': '1.1.1.1',
                                                   'children': []}]},
                                    {'node_id': '1.1.2',
                                     'children': []},
                                    {'node_id': '1.1.3',
                                     'children': []}]},
                       {'node_id': '1.2',
                        'children': []}]},
        {'node_id': 'Current Assests',
         'children': []}]


class TreeViewLabel(Label, TreeViewNode):
    pass


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

    def __init__(self, **kwargs):
        super(TreeviewGroup, self).__init__(**kwargs)
        self.tv = TreeView(root_options=dict(text="Branch/Divisions"),
                           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)


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

    def display_groups(self, instance):
        if len(instance.text) > 0:
            self.popup = TreeviewGroup()
            self.popup.open()


class Group(App):
    #cur.execute("SELECT * FROM `groups` order by group_id asc")
    #rows = cur.fetchall()

    rows = [(1, 'Branch/Dividions', ''), (2, 'Capital Account', 'Reserve & Surplus')]

    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.groupName.text = self.text
        app.root.popup.dismiss()

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

    BoxLayout
        orientation: "vertical"
        BoxLayout:
            id: treeview
        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:
    groupName: groupName

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

        CustomLabel:
            text: 'Group'

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

        CustomLabel:
            text: 'Leadger No.'

        SingleLineTextInput:
            id: groupCode

        GreenButton:
            text: 'Ok'

        GreenButton:
            text: 'Cancel'

        Label:

        Label:

输出