Hi,
> I have two list ;
> mydataID = ['D01','D02','D04','D5']
> mydataTXT = [
> 'data one',
> 'data two',
> 'data three',
> 'data four',
> 'data five',
> ]
>
> My question is , how to :
> 1. Devide the full screen size into two part (top and bottom)
> 2. the bottom part will display my lists as --> mydataID+' '+mydataTXT
> i.e : 'D01 data one'
> each UP/DOWN button stroke will move the higlight to another
> listbox row
> 3. the top part will have two line :
> a. ID --> will display value of mydataID of currently highlighted row
> b. TXT --> will display value of mydataTXT of currently highlighted row
> i.e : if the highlit is at third row of listbox, the top part will
> display :
> ID = D01
> TXT = data three
You can try this - I'm sorry for colors :)
from urwid import *
class SelectableText(Text):
"""Just a selectable Text widget"""
_selectable = True
keypress = lambda self, size, key: key
class BottomWalker(SimpleListWalker):
"""
* manage the specific data
* automaticly create a selectable Text for each data set
* emit 'focus changed' signal when focus is changed
"""
signals = ['focus changed']
def __init__(self, ids, txts):
super(BottomWalker, self).__init__(zip(ids, txts))
getvalues = SimpleListWalker.__getitem__
def __getitem__(self, focus):
return AttrWrap(SelectableText('%s %s' % self.getvalues(focus)), None,
'focus')
def set_focus(self, focus):
emit_signal(self, 'focus changed', self.getvalues(focus))
return super(BottomWalker, self).set_focus(focus)
class Main(Pile):
"""
* display the data at bottom using a list box
* display a formated data set at top
* automaticly update the top text when focus change at bottom (using
signal)
"""
def __init__(self, ids, txts):
self.top = Filler(Text(''))
self.bottom_walker = BottomWalker(ids, txts)
self.bottom = ListBox(self.bottom_walker)
contents = [('weight', 0.5, self.top),
('weight', 0.5, AttrWrap(self.bottom, 'bottom'))]
super(Main, self).__init__(contents)
connect_signal(self.bottom_walker, 'focus changed', self.update_top)
self.bottom_walker.set_focus(0) # force first signal
def update_top(self, data):
self.top.body.set_text('ID = %s\nTXT = %s' % data)
def main():
from urwid.raw_display import Screen
PALETTE = [('bottom', 'dark red', 'light cyan'),
('focus', 'light cyan', 'dark red')]
mydataID = ['D01','D02','D04','D5']
mydataTXT = [
'data one',
'data two',
'data three',
'data four',
'data five',
]
MainLoop(Main(mydataID, mydataTXT), PALETTE, Screen()).run()
if __name__ == '__main__':
main()
--
Alain Leufroy
LOGILAB, Paris (France)
http://www.logilab.fr
Informatique scientifique & gestion de connaissances
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