Python 2.7 Python/Kivy：将文本输入文本从一个类传递到另一个类

当我运行test.py时，会显示一个名称TextInput。当我输入TextInput时，会显示一个带有filter TextInput的树视图。当我在filter TextInput中输入某个内容时，它会根据type关键字显示结果。 但我想当有人在名称文本输入，然后输入关键字放入过滤器文本输入，结果应该显示根据通过关键字

test.py 试验电压（千伏）

---

要传递整个单词，例如关键字或0，请将on_text替换为on_text\u validate

干-不要重复你自己 有重复的代码，我已经把它们变成模块，便于维护

def create_treeview_root(self):
...
def create_treeview_branch(self, obj):
...
def dismiss_callback(self):

一小条 实例 main.py 试验电压（千伏） 输出

#:kivy 1.10.0

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

<TreeviewGroup>:
    treeview: treeview
    title: "Select"
    title_size: 17
    size: 800, 800
    auto_dismiss: False
    scroll: scroll
    fltr : fltr

    BoxLayout
        orientation: "vertical"
        TextInput:
            id : fltr
            size_hint_y: .13
            on_text: root.filter(self.text)

        ScrollView:
            id: scroll
            size_hint: 1, .9


            BoxLayout:
                size_hint_y: None
                id: treeview

        GridLayout:
            cols: 2
            row_default_height: '20dp'
            size_hint: .5, 0.1
            pos_hint: {'x': .25, 'y': 1}
            Button:
                text: 'Ok'
                on_release: root.dismiss()

            Button:
                text: 'Cancel'
                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:
    name: name

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

        CustomLabel:
            text: ' '

        CustomLabel:
            text: ' '

        CustomLabel:
            text: 'Name'

        SingleLineTextInput:
            id: name
            text:' '
            multiline: False
            on_text: root.display_groups(self)



        GreenButton:
            text: 'Ok'

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

def create_treeview_root(self):
...
def create_treeview_branch(self, obj):
...
def dismiss_callback(self):

GroupScreen:
    ...
        SingleLineTextInput:
            id: name
            focus: True
            multiline: False
            on_text_validate: root.display_groups(self)

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, StringProperty, ListProperty
Window.size = (500, 400)


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)


class TreeViewLabel(Label, TreeViewNode):
    pass


class TreeviewGroup(Popup):
    treeview = ObjectProperty(None)
    tv = ObjectProperty(None)
    filter_text = StringProperty('')
    tree = ListProperty([])

    def __init__(self, obj, **kwargs):
        super(TreeviewGroup, self).__init__(**kwargs)
        self.create_treeview_root()
        rows = [('test{}').format(i) for i in range(1, 20)]
        self.tree = [{'node_id': r, 'children': []} for r in rows]
        self.tv.bind(minimum_height=self.treeview.setter('height'))
        self.create_treeview_branch(self.tree)

    def create_treeview_root(self):
        self.tv = TreeView(root_options=dict(text=""),
                           hide_root=False,
                           indent_level=4)

    def create_treeview_branch(self, obj):
        for branch in obj:
            populate_tree_view(self.tv, None, branch)
        self.treeview.add_widget(self.tv)

    def on_open(self):
        self.filter_text = App.get_running_app().root.name.text

    def dismiss_callback(self):
        self.treeview.clear_widgets()
        self.dismiss()
        App.get_running_app().root.name.focus = True

    def filter(self, f):
        self.treeview.clear_widgets()
        self.create_treeview_root()
        new_tree = []
        for n in self.tree:
            if f.lower() in n['node_id'].lower():
                new_tree.append(n)
        self.create_treeview_branch(new_tree)


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

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


class Group(App):
    def build(self):
        self.root = Builder.load_file('test.kv')
        return self.root


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

#:kivy 1.10.0

<TreeViewLabel>:
    on_touch_down:
        app.root.name.text = self.text
        app.root.popup.dismiss_callback()

<TreeviewGroup>:
    treeview: treeview
    title: "Select"
    title_size: 17
    size: 800, 800
    auto_dismiss: False
    scroll: scroll
    fltr : fltr

    BoxLayout
        orientation: "vertical"
        TextInput:
            id : fltr
            focus: True
            text: root.filter_text
            size_hint_y: .13
            on_text: root.filter(self.text)

        ScrollView:
            id: scroll
            size_hint: 1, .9


            BoxLayout:
                size_hint_y: None
                id: treeview

        GridLayout:
            cols: 2
            row_default_height: '20dp'
            size_hint: .5, 0.1
            pos_hint: {'x': .25, 'y': 1}
            Button:
                text: 'Ok'
                on_release:
                    root.dismiss_callback()

            Button:
                text: 'Cancel'
                on_release:
                    root.dismiss_callback()

<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:
    name: name

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

        CustomLabel:
            text: ' '

        CustomLabel:
            text: ' '

        CustomLabel:
            text: 'Name'

        SingleLineTextInput:
            id: name
            focus: True
            multiline: False
            on_text_validate: root.display_groups(self)

        GreenButton:
            text: 'Ok'

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