いよいよ、前項で作ったkv19c.pyの結果をfilelist.pyやfilelist.kvに統合しようとしたのだけど、うまく動かない。
Traceback (most recent call last):
File "/home/*******/MyApp/01_filelist/filelist.py", line 506, in
FilelistApp().run()
File "/usr/lib/python3/dist-packages/kivy/app.py", line 799, in run
self.load_kv(filename=self.kv_file)
File "/usr/lib/python3/dist-packages/kivy/app.py", line 596, in load_kv
root = Builder.load_file(rfilename)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 301, in load_file
return self.load_string(data, **kwargs)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 399, in load_string
widget = Factory.get(parser.root.name)()
File "/usr/lib/python3/dist-packages/kivy/uix/relativelayout.py", line 265, in __init__
super(RelativeLayout, self).__init__(**kw)
File "/usr/lib/python3/dist-packages/kivy/uix/floatlayout.py", line 65, in __init__
super(FloatLayout, self).__init__(**kwargs)
File "/usr/lib/python3/dist-packages/kivy/uix/layout.py", line 76, in __init__
super(Layout, self).__init__(**kwargs)
File "/usr/lib/python3/dist-packages/kivy/uix/widget.py", line 348, in __init__
Builder.apply(self, ignored_consts=self._kwargs_applied_init)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 469, in apply
self._apply_rule(widget, rule, rule, ignored_consts=ignored_consts)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 585, in _apply_rule
self._apply_rule(child, crule, rootrule)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 585, in _apply_rule
self._apply_rule(child, crule, rootrule)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 582, in _apply_rule
child = cls(__no_builder=True)
File "/home/*******/MyApp/01_filelist/filelist.py", line 300, in __init__
self.start_path = kwargs['start_path']
KeyError: 'start_path'
プロセスは終了コード 1 で完了しました
この問題の部分が、
filelist.py（抜粋）
class ResultParts(BoxLayout):
start_path = StringProperty(None)
tv_p = ObjectProperty(None)
def __init__(self, **kwargs):
super(ResultParts, self).__init__(**kwargs)
self.start_path = kwargs['start_path']
self.tv_p.bind(minimum_height = self.tv_p.setter('height'))
self.tree_height = self.idv_dir(self.start_path, None)
（省略ですわ）
class AllSCN(Screen):
tv = ObjectProperty(None)
file_name = ObjectProperty(None)
loadfile = ObjectProperty(None)
text_input = ObjectProperty(None)
（省略ですわ）
# AllSCNのtree処理
self.add_widget(ResultParts( start_path = self.file_name.text, btn_ok_post = self.fileread_ng))
これが、どうしてもわからなかった。
だから、もっと簡略化したものを作った。
kv19d.py
from kivy.app import App
from kivy.lang import Builder
from kivy.properties import ObjectProperty, StringProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.core.text import LabelBase, DEFAULT_FONT
from kivy.resources import resource_add_path
# 日本語フォント設定
resource_add_path('./fonts')
LabelBase.register(DEFAULT_FONT, 'ipaexg.ttf')
sm = ScreenManager()
Builder.load_string('''
<ResultParts>:
Label:
text: root.rcAdd
<TestSCN>:
BoxLayout:
Label:
text: 'AAAAA'
ResultParts:
''')
class ResultParts(BoxLayout):
rc = StringProperty()
rcAdd = ObjectProperty()
def __init__(self, **kwargs):
super(ResultParts, self).__init__(**kwargs)
self.rc = kwargs['start_path']
self.rcAdd = self.rc + 'CCCCC'
class TestSCN(Screen):
def __init__(self, **kwargs):
super(TestSCN, self).__init__(**kwargs)
self.add_widget(ResultParts(start_path='BBBBBB'))
class TestApp(App):
def build(self):
sm.add_widget(TestSCN(name='test'))
return sm
if __name__ == '__main__':
TestApp().run()
こんな画面を出したかった。
これを実行すると、さっきの同じエラーがでる。
つまり、
class TestSCN(Screen):
def __init__(self, **kwargs):
super(TestSCN, self).__init__(**kwargs)
self.add_widget(ResultParts(start_path='BBBBBB'))
で、ResultPartsを呼んでいるのに、このstart_pathがないという現象である。
で、見てみたら
class ResultParts(BoxLayout):
rc = StringProperty()
rcAdd = ObjectProperty()
def __init__(self, **kwargs):
super(ResultParts, self).__init__(**kwargs)
self.rc = kwargs['start_path']
ResultPartsのkwargsの中身がない。さて困った。
実験的に、TestSCNのResultPartsを呼んでいるところをコメントアウトする。
kv19d.py
from kivy.app import App
from kivy.lang import Builder
from kivy.properties import ObjectProperty, StringProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.core.text import LabelBase, DEFAULT_FONT
from kivy.resources import resource_add_path
# 日本語フォント設定
resource_add_path('./fonts')
LabelBase.register(DEFAULT_FONT, 'ipaexg.ttf')
sm = ScreenManager()
Builder.load_string('''
<ResultParts>:
Label:
text: root.rcAdd
<TestSCN>:
BoxLayout:
Label:
text: 'AAAAA'
ResultParts:
''')
class ResultParts(BoxLayout):
rc = StringProperty()
rcAdd = ObjectProperty()
def __init__(self, **kwargs):
super(ResultParts, self).__init__(**kwargs)
#self.rc = kwargs['start_path']
self.rcAdd = self.rc + 'CCCCC'
class TestSCN(Screen):
def __init__(self, **kwargs):
super(TestSCN, self).__init__(**kwargs)
#self.add_widget(ResultParts(start_path='BBBBBB'))
class TestApp(App):
def build(self):
sm.add_widget(TestSCN(name='test'))
return sm
if __name__ == '__main__':
TestApp().run()
実行すると、
おや、それなりに動く。
ということは、この部分はなくてもいいかな？
そうすると、start_pathの内容は、どう渡せばいいんだろう？
では、ScreenManager経由でデータを渡してみよう。
from kivy.app import App
from kivy.lang import Builder
from kivy.properties import ObjectProperty, StringProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.core.text import LabelBase, DEFAULT_FONT
from kivy.resources import resource_add_path
# 日本語フォント設定
resource_add_path('./fonts')
LabelBase.register(DEFAULT_FONT, 'ipaexg.ttf')
sm = ScreenManager()
Builder.load_string('''
<ResultParts>:
Label:
text: root.rcAdd
<TestSCN>:
BoxLayout:
Label:
text: 'AAAAA'
ResultParts:
''')
class ResultParts(BoxLayout):
rc = StringProperty()
rcAdd = ObjectProperty()
def __init__(self, **kwargs):
super(ResultParts, self).__init__(**kwargs)
#self.rc = kwargs['start_path']
self.rcAdd = sm.start_path + 'CCCCC'
class TestSCN(Screen):
def __init__(self, **kwargs):
super(TestSCN, self).__init__(**kwargs)
#self.add_widget(ResultParts(start_path='BBBBBB'))
sm.start_path = 'BBBBBB'
class TestApp(App):
def build(self):
sm.add_widget(TestSCN(name='test'))
return sm
if __name__ == '__main__':
TestApp().run()
で、実行すると、、、、、
Traceback (most recent call last):
File "/home/*******/MyApp/01_filelist/kv19d.py", line 61, in
TestApp().run()
File "/usr/lib/python3/dist-packages/kivy/app.py", line 800, in run
root = self.build()
File "/home/*******/MyApp/01_filelist/kv19d.py", line 55, in build
sm.add_widget(TestSCN(name='test'))
File "/home/*******/MyApp/01_filelist/kv19d.py", line 47, in __init__
super(TestSCN, self).__init__(**kwargs)
File "/usr/lib/python3/dist-packages/kivy/uix/relativelayout.py", line 265, in __init__
super(RelativeLayout, self).__init__(**kw)
File "/usr/lib/python3/dist-packages/kivy/uix/floatlayout.py", line 65, in __init__
super(FloatLayout, self).__init__(**kwargs)
File "/usr/lib/python3/dist-packages/kivy/uix/layout.py", line 76, in __init__
super(Layout, self).__init__(**kwargs)
File "/usr/lib/python3/dist-packages/kivy/uix/widget.py", line 348, in __init__
Builder.apply(self, ignored_consts=self._kwargs_applied_init)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 469, in apply
self._apply_rule(widget, rule, rule, ignored_consts=ignored_consts)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 585, in _apply_rule
self._apply_rule(child, crule, rootrule)
File "/usr/lib/python3/dist-packages/kivy/lang/builder.py", line 582, in _apply_rule
child = cls(__no_builder=True)
File "/home/*******/MyApp/01_filelist/kv19d.py", line 41, in __init__
self.rcAdd = sm.start_path + 'CCCCC'
AttributeError: 'ScreenManager' object has no attribute 'start_path'
プロセスは終了コード 1 で完了しました
あちゃー、、、、
smの中身を見てみたが、start_pathが入っていない。
ここで、深い深いまっくら森に突入することになる。
（続く）
