Sorry, I forgot to actually attach the file...
Hello,
I'm trying to implement a generic class for a dialog popup. I'm attaching the
code for the implementation. I don't know the reason why it gives me an error
at some point. To trigger the error one must:
- click on browse
- click on whatever OK or Cancel
Would someone please review the code and comment on it...
Thank you,
Arcadie
#!/usr/bin/python
# -*- coding: utf-8 -*-
import urwid
from urwid.command_map import command_map
class DialogExit(Exception):
pass
class DialogDisplay(urwid.WidgetWrap):
palette = [
('body','black','white'),
('border','black','white'),
('shadow','white','black'),
('selectable','black', 'dark cyan'),
('focus','black','dark cyan','bold'),
('focustext','light gray','dark blue'),
('button normal','light gray', 'dark blue', 'standout'),
('button select','white', 'dark green'),
]
parent = None
def __init__(self, text, width, height, body=None, loop=None, parent=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(u'\u2550')] )
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')
w = urwid.LineBox(w)
# "shadow" effect
w = urwid.Columns( [w,('fixed', 1, urwid.AttrWrap(
urwid.Filler(urwid.Text(('border',' ')), "top")
,'shadow'))])
w = urwid.Frame( w, footer =
urwid.AttrWrap(urwid.Text(('border',' ')),'shadow'))
if parent is None:
# outermost border area
w = urwid.Padding(w, 'center', width )
w = urwid.Filler(w, 'middle', height )
w = urwid.AttrWrap( w, 'border' )
else:
self.parent = parent
#w = urwid.Overlay(w, parent, 'center', width+2, 'middle', height+2)
self.loop = loop
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, 'button normal','button select' )
l.append( b )
self.buttons = urwid.GridFlow(l, 10, 3, 1, 'center')
self.frame.footer = urwid.Pile( [ urwid.Divider(u'\u2500'),
self.buttons ], focus_item = 1)
def button_press(self, button):
if self.parent is None:
raise DialogExit(button.exitcode)
else:
self.loop.widget=self.parent
def show(self):
if self.loop is None:
self.loop = urwid.MainLoop(self.view, self.palette)
try:
self.loop.run()
except DialogExit, e:
return self.on_exit( e.args[0] )
else:
self.loop.widget = self.view
def on_exit(self, exitcode):
return exitcode, ""
class MyCheckBox(urwid.CheckBox):
def keypress(self, size, key):
if (key == " ") and (command_map[key] == "activate"):
self.toggle_state()
else:
return key
class AddToolDialog(DialogDisplay):
def __init__(self, text, width, height, parent=None):
body = self.dialog_body()
self.loop = None
DialogDisplay.__init__(self, text, width, height, body, parent)
def on_browse_button(self, button):
d = DialogDisplay( "Hello", 50, 10, None, self.loop, self )
# d = DialogDisplay( "Hello", 50, 10)
d.add_buttons([ ("OK", 0), ("Cancel", 1) ])
d.show()
return
def button(self, caption, callback):
w = urwid.Button(caption, callback)
w = urwid.AttrWrap(w, 'button normal', 'button select')
return w
def dialog_body(self):
tools_list = ["First tool", "Second tool", "Third tool"]
self.widgets = []
# Tool id input
self.widgets += [urwid.Edit("Tool ID:")]
# Tool name input
self.widgets += [urwid.Edit("Name:")]
# Tool description input
self.widgets += [urwid.Edit("Description:")]
# Tool dependancies list
self.widgets += [urwid.Text("Dependancies:")]
self.widgets += [MyCheckBox(tool) for tool in tools_list]
# Configuration scripts
self.widgets += [urwid.Text("Configuration scripts:")]
self.widgets += [self.button("Browse", self.on_browse_button)]
self.listbox = urwid.ListBox(urwid.SimpleListWalker([urwid.AttrWrap(w, None, 'reveal focus') for w in self.widgets]))
return self.listbox
def next_widget(self,input):
if input == "enter":
found = False
while not found:
self.listbox.set_focus(self.listbox.get_focus()[1] + 1)
found = self.listbox.get_focus()[0].selectable()
def show(self):
self.loop = urwid.MainLoop(self.view, self.palette, unhandled_input = self.next_widget)
try:
self.loop.run()
except DialogExit, e:
return self.on_exit( e.args[0] )
def main():
view = AddToolDialog("Add a new tool", 100, 20)
view.add_buttons([ ("Quit", 0) ])
exitcode, exitstring = view.show()
if '__main__'==__name__:
main()
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