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# dialog.py
# TODO: Pressing Esc in a dialog should be the same as Cancel...
# (but how? using EVT_CHAR doesn't work... neither does OnCharHook.)
import wx
from button import Button
from containers import Container
from line import Line
from panel import Panel
from keys import keys
import frame
# TODO: styles (same as Frame?)
class Dialog(wx.Dialog, Container):
__events__ = frame.Frame.__events__.copy()
__events__ .update({
'CharHook': wx.EVT_CHAR_HOOK,
})
def __init__(self, parent, title, cancel_button=1):
wx.Dialog.__init__(self, parent, wx.NewId(), title, wx.DefaultPosition)
# this should create self.sizer and give access to self.AddComponent
self._create_sizer('vertical')
self.SetDefaultFont()
# enter stuff here...
self.Body()
# add line and buttons pane...
line = Line(self, size=(20,-1), direction='horizontal')
self.AddComponent(line, align='center', stretch=1, border=5)
panel = self.AddButtonPanel(cancel_button)
self.BindEvents()
panel.Pack()
self.AddComponent(panel)
self.Pack()
self.Centre()
def AddButtonPanel(self, cancel_button=1):
panel = Panel(self, direction='horizontal')
self.okbutton = Button(panel, "OK", event=self.OnClickOKButton)
self.okbutton.SetDefault()
panel.AddComponent(self.okbutton, expand=1, border=5)
if cancel_button:
cancelbutton = Button(panel, "Cancel", event=self.OnClickCancelButton)
panel.AddComponent(cancelbutton, expand=1, border=5)
return panel
def OnClickOKButton(self, event=None):
if self.Validate():
event.Skip()
# only close the dialog if we validate:
self.EndModal(wx.ID_OK)
else:
self.OnValidateError(event)
def OnClickCancelButton(self, event=None):
self.EndModal(wx.ID_CANCEL)
def OnValidateError(self, event=None):
""" Override this to take action when the input does not validate.
(E.g. display an error message, etc.) """
def ShowModal(self):
""" Show the dialog modally. Returns 'ok' or 'cancel'. """
r = wx.Dialog.ShowModal(self)
return {
wx.ID_OK: "ok",
wx.ID_CANCEL: "cancel",
}.get(r, "?")
def Body(self):
# override this
# NOTE: do not call self.Pack() here, it's called automatically later
return None
def Validate(self):
""" Override this to validate input and return 0 if it's not correct.
Return 1 otherwise. """
return 1
# this doesn't work -- or does it?:
def OnCharHook(self, event=None):
if event.GetKeyCode() == keys.esc:
self.OnClickCancelButton()
event.Skip()
def showdialog(dialogclass, *args, **kwargs):
""" Easy function to call dialogs and clean up when it's done. """
dlg = dialogclass(*args, **kwargs)
try:
result = dlg.ShowModal()
finally:
dlg.Destroy()
return result
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