class StringEntry:
"""String class for entry
rationalised with integer and float classes
Parameters
----------
parent : str
parent handle
lf_text : str
text on LabelFrame
def_inp : str
default text
colour : str
frame colour
mod : bool
enable or disable state switch
Returns
-------
string
"""
def __init__(self, parent, lf_text, def_inp="", colour='brown', mod=False):
self.parent = parent
self.lf_text = lf_text
# self.mess_text = mess_text
self.mod = mod
self.ent0 = None # for entry
self.cb_opt = None # for check option
self.out_var = StringVar()
self.out_var.set(def_inp)
self.construct(colour) # changed
def construct(self, colour): # changed
"""construct of colour style
Parameters
----------
colour : str
frame colour
Returns
-------
None
"""
self.farbe = farbe = {'blue': 'light blue', 'brown': 'brown1',
'green': 'light green', 'pink': '#EAAFBF'}
colour = colour if colour in farbe else 'brown'
self.colour = colour
st1 = Style()
st1.theme_use('default')
st1.configure(colour + '.TLabelframe', background='#C9B99B')
st1.configure(colour + '.TLabelframe.Label', background=farbe[colour])
st1.configure(colour + '.TCheckbutton', background=farbe[colour])
st1.configure('brown.TLabel', background='#EDEF77')
st1.configure('lowr.TLabel', background='lightblue') # new
st1.configure('upr.TLabel', background='red') # new
self.lf0 = LabelFrame(self.parent, text=self.lf_text,
style=self.colour + '.TLabelframe')
self.lf0.grid(column=0, row=0, padx=10, pady=10)
self.messlbl = Label(self.lf0, style='brown.TLabel') # removed text
self.messlbl.grid(row=2, column=0, pady=10, padx=10)
self.make_entry()
def make_entry(self):
"""construct of Entry
Parameters
----------
None
Returns
-------
None
"""
vcmd = self.lf0.register(self.is_okay)
self.ent0 = ent0 = Entry(self.lf0, validate='key',
validatecommand=(vcmd, '%P', '%S', '%i'),
textvariable=self.out_var)
ent0.bind("<Return>", self.end_input)
ent0.grid(row=1, column=0, padx=10)
ent0.focus()
if self.mod in (True, False):
self.modify()
def modify(self):
"""construct of state switch
Parameters
----------
None
Returns
-------
None
"""
lf_text = self.lf_text
# entry disabled until checkbox is ticked
self.cb_opt = Checkbutton(self.lf0, command=self.toggle_opt,
style=self.colour + '.TCheckbutton')
self.lf0['labelwidget'] = self.cb_opt
if self.mod:
self.ent0.state(['!disabled'])
self.cb_opt.state(['!selected'])
self.cb_opt['text'] = lf_text # +'\n Check to prevent editing '
self.ent0.focus()
else:
self.ent0.state(['disabled'])
self.cb_opt.state(['selected'])
self.cb_opt['text'] = lf_text # +'\n Check to modify '
def toggle_opt(self):
"""state switch logic
Parameters
----------
None
Returns
-------
None
"""
lf_text = self.lf_text
# state of entry controlled
# by the state of the check button in Option frame label widget
if self.cb_opt.instate(['selected']):
self.ent0.state(['disabled'])
self.cb_opt['text'] = lf_text # +'\n Check to modify '
else:
self.ent0.state(['!disabled']) # enable option
self.cb_opt['text'] = lf_text # changed
self.ent0.focus()
def end_input(self, evt):
"""limit on string
Parameters
----------
evt : str
bind handle
Returns
-------
None
"""
if len(self.out_var.get()) > 5:
self.messlbl['text'] = "That's OK"
else:
self.messlbl['text'] = "Need at least 6 characters"
def is_okay(self, text, inp, ind):
""" validation function
Parameters
----------
text : str
text if allowed
inp : str
current input
Returns
-------
boolean
"""
ind = int(ind)
print(ind)
if (inp.isalnum() or inp in (",", ".", "'", " ")) and ind > 0:
return True
else:
return bool((text.isupper() or text == "") and ind == 0)
