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"""A simple but flexible modal dialog box."""
from Tkinter import *
class SimpleDialog:
def __init__(self, master,
text='', buttons=[], default=None, cancel=None,
title=None, class_=None):
if class_:
self.root = Toplevel(master, class_=class_)
else:
self.root = Toplevel(master)
if title:
self.root.title(title)
self.root.iconname(title)
self.message = Message(self.root, text=text, aspect=400)
self.message.pack(expand=1, fill=BOTH)
self.frame = Frame(self.root)
self.frame.pack()
self.num = default
self.cancel = cancel
self.default = default
self.root.bind('<Return>', self.return_event)
for num in range(len(buttons)):
s = buttons[num]
b = Button(self.frame, text=s,
command=(lambda self=self, num=num: self.done(num)))
if num == default:
b.config(relief=RIDGE, borderwidth=8)
b.pack(side=LEFT, fill=BOTH, expand=1)
self.root.protocol('WM_DELETE_WINDOW', self.wm_delete_window)
self._set_transient(master)
def _set_transient(self, master, relx=0.5, rely=0.3):
widget = self.root
widget.withdraw() # Remain invisible while we figure out the geometry
widget.transient(master)
widget.update_idletasks() # Actualize geometry information
if master.winfo_ismapped():
m_width = master.winfo_width()
m_height = master.winfo_height()
m_x = master.winfo_rootx()
m_y = master.winfo_rooty()
else:
m_width = master.winfo_screenwidth()
m_height = master.winfo_screenheight()
m_x = m_y = 0
w_width = widget.winfo_reqwidth()
w_height = widget.winfo_reqheight()
x = m_x + (m_width - w_width) * relx
y = m_y + (m_height - w_height) * rely
if x+w_width > master.winfo_screenwidth():
x = master.winfo_screenwidth() - w_width
elif x < 0:
x = 0
if y+w_height > master.winfo_screenheight():
y = master.winfo_screenheight() - w_height
elif y < 0:
y = 0
widget.geometry("+%d+%d" % (x, y))
widget.deiconify() # Become visible at the desired location
def go(self):
self.root.wait_visibility()
self.root.grab_set()
self.root.mainloop()
self.root.destroy()
return self.num
def return_event(self, event):
if self.default is None:
self.root.bell()
else:
self.done(self.default)
def wm_delete_window(self):
if self.cancel is None:
self.root.bell()
else:
self.done(self.cancel)
def done(self, num):
self.num = num
self.root.quit()
if __name__ == '__main__':
def test():
root = Tk()
def doit(root=root):
d = SimpleDialog(root,
text="This is a test dialog. "
"Would this have been an actual dialog, "
"the buttons below would have been glowing "
"in soft pink light.\n"
"Do you believe this?",
buttons=["Yes", "No", "Cancel"],
default=0,
cancel=2,
title="Test Dialog")
print d.go()
t = Button(root, text='Test', command=doit)
t.pack()
q = Button(root, text='Quit', command=t.quit)
q.pack()
t.mainloop()
test()