Hi Ian,
* Ian Ward <[EMAIL PROTECTED]> wrote:
> Fabian Braennstroem wrote:
>> Hi,
>>
>> I just found urwid and would like to use it to adjust the
>> curses-based 'lfm' (last file manager) with some radio and
>> check buttons. It would be nice, if anybody can send me some
>> simple examples. I am still a python newbie and I saw the
>> examples in the urwid installation directory, but as more
>> 'understandable' scripts I read the better I get into it :-)
>
> Have you followed the tutorial and checked out the contributed examples
> on the web site?
Yes, but as I wrote, I am kind of new using python... and
try to copy and past a lot of interesting lines to get my
ideas to work. Python works pretty good this way; I just
import the needed module and use some lines from other
tutorials, which hopefully works. It actually does for some
small things :-)
> More simple examples would be nice, and the docs and examples can always
> be improved on. Please please post any questions you have to the list.
Thanks! As written above, I try to 'enhance' lfm for my
needs, e.g. printing, burning
files, making plots, converting images, running latex,... but I am missing some
radio/check buttons. Now, I tried to include the 'dialog.py' example into lfm,
just to run a 'do_msgbox'. To achive that I included the following part:
class DialogExit(Exception):
pass
class DialogDisplay:
palette = [
('body','black','light gray', 'standout'),
('border','black','dark blue'),
('shadow','white','black'),
('selectable','black', 'dark cyan'),
('focus','white','dark blue','bold'),
('focustext','light gray','dark blue'),
]
def __init__(self, text, height, width, body=None):
width = int(width)
if width <= 0:
width = ('relative', 80)
height = int(height)
if height <= 0:
height = ('relative', 80)
self.body = body
if body is None:
# fill space with nothing
body = urwid.Filler(urwid.Divider(),'top')
self.frame = urwid.Frame( body, focus_part='footer')
if text is not None:
self.frame.header = urwid.Pile( [urwid.Text(text),
urwid.Divider()] )
w = self.frame
# pad area around listbox
w = urwid.Padding(w, ('fixed left',2), ('fixed right',2))
w = urwid.Filler(w, ('fixed top',1), ('fixed bottom',1))
w = urwid.AttrWrap(w, 'body')
# "shadow" effect
w = urwid.Columns( [w,('fixed', 2, urwid.AttrWrap(
urwid.Filler(urwid.Text(('border',' ')), "top")
,'shadow'))])
w = urwid.Frame( w, footer =
urwid.AttrWrap(urwid.Text(('border',' ')),'shadow'))
# outermost border area
w = urwid.Padding(w, 'center', width )
w = urwid.Filler(w, 'middle', height )
w = urwid.AttrWrap( w, 'border' )
self.view = w
def add_buttons(self, buttons):
l = []
for name, exitcode in buttons:
b = urwid.Button( name, self.button_press )
b.exitcode = exitcode
b = urwid.AttrWrap( b, 'selectable','focus' )
l.append( b )
self.buttons = urwid.GridFlow(l, 10, 3, 1, 'center')
self.frame.footer = urwid.Pile( [ urwid.Divider(),
self.buttons ], focus_item = 1)
def button_press(self, button):
raise DialogExit(button.exitcode)
def main(self):
self.ui = urwid.raw_display.Screen()
self.ui.register_palette( self.palette )
return self.ui.run_wrapper( self.run )
def run(self):
self.ui.set_mouse_tracking()
size = self.ui.get_cols_rows()
try:
while True:
canvas = self.view.render( size, focus=True )
self.ui.draw_screen( size, canvas )
keys = None
while not keys:
keys = self.ui.get_input()
for k in keys:
if urwid.is_mouse_event(k):
event, button, col, row = k
self.view.mouse_event( size,
event, button, col, row,
focus=True)
if k == 'window resize':
size = self.ui.get_cols_rows()
k = self.view.keypress( size, k )
if k:
self.unhandled_key( size, k)
except DialogExit, e:
return self.on_exit( e.args[0] )
def on_exit(self, exitcode):
return exitcode, ""
def unhandled_key(self, size, key):
pass
def do_msgbox(text, height, width):
d = DialogDisplay( text, height, width )
d.add_buttons([ ("OK", 0) ])
return d
I called the 'do_msgbox' with:
ord('U'): 'do_msgbox("test",10,15)',
which means, as soon as you type 'U' call 'do_msgbox'. This is the way I added
the other 'features'. Unfortunately, I get:
node1~/HOME$ lfm
[24 Aug 8:36pm]
Traceback (most recent call last):
File "/home/fab/Desktop/lfm/lfm.py", line 893, in ?
lfm_start(sys.argv)
File "/home/fab/Desktop/lfm/lfm.py", line 882, in lfm_start
path = curses.wrapper(main, paths, prefs)
File "/usr/lib/python2.4/curses/wrapper.py", line 44, in wrapper
return func(stdscr, *args, **kwds)
File "/home/fab/Desktop/lfm/lfm.py", line 801, in main
ret = app.run()
File "/home/fab/Desktop/lfm/lfm.py", line 174, in run
ret = self.act_pane.manage_keys()
File "/home/fab/Desktop/lfm/lfm.py", line 555, in manage_keys
ret = actions.do(self.act_tab, ch)
File "/home/fab/Desktop/lfm/actions.py", line 189, in do
exec(act)
File "<string>", line 1, in ?
AttributeError: DialogDisplay instance has no __call__ method
Right now, I have no clue, what the last line means. Maybe, it is a simple
python/urwid problem and you do not have to know the whole lfm code to give
some tips!? Would be nice to use urwid for it.
Thanks!
Greetings!
Fabian
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