/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/application.py
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revision 1162 by jonathan, Thu Jun 12 12:41:16 2003 UTC revision 1390 by jonathan, Thu Jul 10 14:53:38 2003 UTC
# Line 18  import os.path Line 18  import os.path
18  import traceback  import traceback
19    
20  from wxPython.wx import *  from wxPython.wx import *
21    from wxPython.lib.dialogs import wxScrolledMessageDialog
22    
23  from Thuban.Lib.connector import Publisher  from Thuban.Lib.connector import Publisher
24  from Thuban.Lib.fileutil import get_application_dir  from Thuban.Lib.fileutil import get_application_dir
# Line 223  class ThubanApplication(wxApp, Publisher Line 224  class ThubanApplication(wxApp, Publisher
224              self.top.SetMap(self.session.Maps()[0])              self.top.SetMap(self.session.Maps()[0])
225          else:          else:
226              self.top.SetMap(None)              self.top.SetMap(None)
227    
228        in_exception_dialog = 0 # flag: are we already inside the exception dialog?
229    
230        def ShowExceptionDialog(self, exc_type, exc_value, exc_traceback):
231            """Show a message box with information about an exception.
232    
233            The parameters are the usual values describing an exception in
234            Python, the exception type, the value and the traceback.
235    
236            This method can be used as a value for the sys.excepthook.
237            """
238            if self.in_exception_dialog:
239                return
240            self.in_exception_dialog = 1
241            while wxIsBusy():
242                wxEndBusyCursor() # reset the mouse cursor
243    
244            try:
245                lines = traceback.format_exception(exc_type, exc_value,
246                                                   exc_traceback)
247                message = "An unhandled exception occurred:\n%s\n" % exc_value+\
248                          "(please report to " \
249                          "http://thuban.intevation.org/bugtracker.html)"\
250                          "\n\n\n"+\
251                          "".join(lines)
252                print message
253    
254                # We don't use an explicit parent here because this method might
255                # be called in circumstances where the main window doesn't exist
256                # anymore.
257                dlg = wxScrolledMessageDialog(None, message,
258                                              "Thuban: Internal Error")
259                dlg.ShowModal()
260                dlg.Destroy()
261    
262            finally:
263                self.in_exception_dialog = 0
264                # delete the last exception info that python keeps in
265                # sys.last_* because especially last_traceback keeps
266                # indirect references to all objects bound to local
267                # variables and this might prevent some object from being
268                # collected early enough.
269                sys.last_type = sys.last_value = sys.last_traceback = None
270    

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