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,StringProperty
Window.size = (700, 530)
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 = []
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 TestViewLabel():
pass
class TreeviewGroup(Popup):
treeview = ObjectProperty(None)
tv = ObjectProperty(None)
ti = ObjectProperty()
abc = StringProperty('c')
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)
class CityScreen(Screen):
groupName = ObjectProperty(None)
popup = ObjectProperty(None)
statecode = StringProperty('')
def display_states(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.
'''
class MyApp(App):
def build(self):
self.root = Builder.load_file('demo.kv')
return self.root
if __name__ == '__main__':
MyApp().run()
#:kivy 1.10.0
<TreeViewLabel>:
on_touch_down:
app.root.stateName.text = self.text
app.root.select_node(self)
app.root.popup.dismiss()
<TestViewLabel>:
on_touch_down:
app.root.stateName.text = self.text
app.root.select_node(self)
app.root.popup.dismiss()
<TreeviewGroup>:
id: treeview
treeview: treeview
size_hint: None, None
size: 400, 400
auto_dismiss: False
BoxLayout
orientation: "vertical"
TextInput:
id: ti
size_hint_y: .1
text: root.abc
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
CityScreen:
stateName: stateName
GridLayout:
cols: 2
padding : 30,30
spacing: 10, 10
row_default_height: '40dp'
CustomLabel:
text: 'Text'
SingleLineTextInput:
id: stateName
on_text: root.display_states(self)
#Spinner:
#text: "State Code"
#values: ["111", "112", "113", "114"]
#values: app.r
#background_color: color_button if self.state == 'normal' else color_button_pressed
#background_down: 'atlas://data/images/defaulttheme/spinner'
#color: color_font
#option_cls: Factory.get("MySpinnerOption")
#size_hint: None, None
GreenButton:
text: 'Ok'
on_press: root.insert_data(stateName.text)
GreenButton:
text: 'Cancel'
on_press: app.stop()
Label:
Label:
当我在文本TextBox中输入内容时，会弹出一个弹出窗口。然后如何在弹出窗口中将值从文本TextBox传递到搜索框。
SearchBox适用于父节点。它不适用于子节点。如何工作？
答案 0 :(得分：2)
- 当我在文本TextBox中键入内容时，会弹出一个弹出窗口。然后如何将弹出的文本TextBox中的值传递给搜索框。
由于弹出时弹出窗口中有文本输入属性，因此可以传递文本：
...
<TreeviewGroup>:
id: treeview
treeview: treeview
size_hint: None, None
size: 400, 400
auto_dismiss: False
ti: ti
BoxLayout
orientation: "vertical"
TextInput:
id: ti
size_hint_y: .1
on_text: root.filter(self.text)
然后在.py：
...
class CityScreen(Screen):
groupName = ObjectProperty(None)
popup = ObjectProperty(None)
statecode = StringProperty('')
def display_states(self, instance):
if len(instance.text) > 0:
if self.popup is None:
self.popup = TreeviewGroup()
self.popup.ti.text = instance.text
self.popup.filter(instance.text)
self.popup.open()
...
2 SearchBox适用于父节点。它不适用于子节点。这有用吗？
这不是一件容易的事，这个问题应该得到赏金
要在treeView具有也是父项的子项时进行过滤，我会做很多递归
首先，将这些功能添加到.py
...
def get_children(n):
'''get all the children in the node whithout her children'''
if len(n['children']) == 0:
return []
else:
children = [e['node_id'] for e in n['children']]
for child in n['children']:
children.extend([c for c in get_children(child)])
return children
def get_children2(n, t):
'''get the node with n as id'''
if t is []:
return False
else:
for child in t:
if child['node_id'] == n:
return child
else:
r = get_children2(n, child['children'])
if r:
return r
def roots(n):
'''return the roots (if a node have child it is a root)'''
if len(n['children']) == 0:
return [None]
else:
l = [n['node_id']]
for c in n['children']:
l.extend(roots(c))
return l
def get_roots(t):
'''this one is just to remove the None from the result of the first one'''
fl = []
for n in t:
l = roots(n)
li = []
for e in l:
if e is not None:
li.append(e)
fl.extend(li)
if len(n['children']) == 0:
fl.append(n['node_id'])
return fl
...
现在您可以更改TreeView的过滤方法：
...
class TreeviewGroup(Popup):
treeview = ObjectProperty(None)
tv = ObjectProperty(None)
ti = ObjectProperty()
...
def filter(self, f):
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)
l = []
l_roots = get_roots(tree)
dict_roots = []
for node in self.tv.iterate_all_nodes():
l.append(node)
for i in range(len(l)):
if l[i].text in l_roots:
dict_roots.append({'ind': i, 'id': l[i].text})
roots_childs = {}
for e in l:
try:
nod = get_children2(e.text, tree)
roots_childs[e.text] = get_children(nod)
except TypeError:
pass
to_remove = []
for e in roots_childs:
for child in roots_childs[e]:
if child not in l_roots:
if f.lower() not in child.lower():
if child not in to_remove:
to_remove.append(child)
n = 0
for child in roots_childs[e]:
if child in to_remove:
n += 1
if n == len(roots_childs[e]):
if f.lower() not in e.lower():
to_remove.append(e)
for n in l:
if n.text in to_remove:
self.tv.remove_node(n)