Hello all,
I found a bug in some of pybwidget's dialog classes.
The affected classes are MessageDialog, PasswordDialog, SelectFont and SelectColor;
it seems like there is no way to get the result the dialog box returns.
The problem is the call to Tkinter.Widget.__init__() , which itself calls
Tkinter.BaseWidget.__init__(), where the result of self.tk.call() gets lost.
I tried to avoid this by creating a separate constructor class for these dialogs
where self.tk.call() is called by a separate show() method, which allows to catch the
return value (see the code below).
It's probably not perfect, but as far as I have tried, it seems to work.
However, the resulting syntax looked a little weird to me, so I added shortcut functions
that turn e.g
dialog = SelectFont(master)
newfont = dialog.show()
resp.:
newfont = SelectFont(master).show()
into
newfont = selectfont(master)
.
BTW, the SelectColorMenu() function doesn't seem to work either, however if
I haven't missed something, it is the same as SelectColor(master, type='popup'),
so I'm not sure if it is necessary at all.
Regards
Michael
################################################################################################
class _QuestionDialog(ButtonBox, _Frame):
'''Internal class for use in dialog boxes that should return the result of the
corresponding tk command. This is mostly copied from Tkinter.BaseWidget.__init__(),
but the tk command is only called if explicitely requested by calling self.show().'''
def __init__(self, master, widgetName, cnf={}, **kw):
self.widgetName = widgetName
self.master = master
if kw:
self._cnf = Tkinter._cnfmerge((cnf, kw))
else:
self._cnf = cnf
Tkinter.BaseWidget._setup(self, master, self._cnf)
classes = []
for k in self._cnf.keys():
if type(k) is Tkinter.ClassType:
classes.append((k, self._cnf[k]))
del self._cnf[k]
def show(self):
result = self.tk.call((self.widgetName, self._w) + self._options(self._cnf))
return result
class MessageDialog(_QuestionDialog):
def __init__(self, master, cnf={}, **kw):
self._require(master)
_QuestionDialog.__init__(self, master, "MessageDlg", cnf, **kw)
def messagedialog(master, cnf={}, **kw):
return MessageDialog(master, cnf, **kw).show()
class PasswordDialog(_QuestionDialog):
def __init__(self, master, cnf={}, **kw):
self._require(master)
_QuestionDialog.__init__(self, master, "PasswdDlg", cnf, **kw)
def passworddialog(master, cnf={}, **kw):
return PasswordDialog(master, cnf, **kw).show()
class SelectFont(_QuestionDialog):
def __init__(self, master, cnf={}, **kw):
_QuestionDialog.__init__(self, master, "SelectFont", cnf, **kw)
if kw.has_key('type') and kw['type'] == 'toolbar':
# create the toolbar widget
self.show()
def loadfont(self):
return self.tk.call("SelectFont::loadfont")
def selectfont(master, cnf={}, **kw):
kw['type'] = 'dialog'
return SelectFont(master, cnf, **kw).show()
class SelectColor(_QuestionDialog):
def __init__(self, master, cnf={}, **kw):
_QuestionDialog.__init__(self, master, "SelectColor", cnf, **kw)
def setcolor(self, index, color):
self.tk.call("SelectColor::setcolor", index, color)
def selectcolor(master, cnf={}, **kw):
return SelectColor(master, cnf, **kw).show()
#########################################################################################
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