python-2.7kivykivy-language
Python/Kivy : pass TextInput text from one class to another class
When i run test.py then shows a name TextInput.When i type into TextInput then shows a Tree View with filter TextInput.When i Type something into filter TextInput it shows result according type keyword.
But I want when someone type in name TextInput then type keyword put into filter TextInput and result should be show according pass keyword.
test.py
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, 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)
popup = ObjectProperty()
def __init__(self,obj, **kwargs):
super(TreeviewGroup, self).__init__(**kwargs)
self.tv = TreeView(root_options=dict(text=""),
hide_root=False,
indent_level=4)
rows = [('test{}').format(i) for i in range(1, 20)]
tree = [{'node_id': r, 'children': []} for r in rows]
self.tv.bind(minimum_height=self.treeview.setter('height'))
for branch in tree:
populate_tree_view(self.tv, None, branch)
self.treeview.add_widget(self.tv)
def filter(self, f):
#self.ti.text = "text12"
self.treeview.clear_widgets()
self.tv = TreeView(root_options=dict(text=""),
hide_root=False,
indent_level=4)
rows = [('test{}').format(i) for i in range(1, 20)]
tree = []
for r in rows:
tree.append({'node_id': r, 'children': []})
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 remove_widgets(self):
for child in [child for child in self.treeview.children]:
self.treeview.remove_widget(child)
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()
test.kv
#: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()
Solution
To pass the whole word e.g. keyword or 0, replace on_text with on_text_validate.
DRY - Don't Repeat Yourselves
There are duplicate codes, I have turned them into modules for easy maintenance.
def create_treeview_root(self):
...
def create_treeview_branch(self, obj):
...
def dismiss_callback(self):
Snippet
GroupScreen:
...
SingleLineTextInput:
id: name
focus: True
multiline: False
on_text_validate: root.display_groups(self)
Example
main.py
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()
test.kv
#: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()
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