/[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 1518 by jonathan, Tue Jul 29 15:04:11 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 37  import mainwindow Line 38  import mainwindow
38  from messages import SESSION_REPLACED  from messages import SESSION_REPLACED
39    
40    
   
41  class ThubanApplication(wxApp, Publisher):  class ThubanApplication(wxApp, Publisher):
42    
43      """      """
# Line 49  class ThubanApplication(wxApp, Publisher Line 49  class ThubanApplication(wxApp, Publisher
49      """      """
50    
51      def OnInit(self):      def OnInit(self):
52            sys.excepthook = self.ShowExceptionDialog
53          self.splash = self.splash_screen()          self.splash = self.splash_screen()
54          if self.splash is not None:          if self.splash is not None:
55              self.splash.Show()              self.splash.Show()
# 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    
239            if self.in_exception_dialog:
240                return
241            self.in_exception_dialog = 1
242            while wxIsBusy():
243                wxEndBusyCursor() # reset the mouse cursor
244    
245            try:
246                lines = traceback.format_exception(exc_type, exc_value,
247                                                exc_traceback)
248                message = "An unhandled exception occurred:\n%s\n" % exc_value+\
249                        "(please report to " \
250                        "http://thuban.intevation.org/bugtracker.html)"\
251                        "\n\n\n"+\
252                        "".join(lines)
253                print message
254    
255                # We don't use an explicit parent here because this method might
256                # be called in circumstances where the main window doesn't exist
257                # anymore.
258                dlg = wxScrolledMessageDialog(None, message,
259                                            "Thuban: Internal Error")
260                dlg.ShowModal()
261                dlg.Destroy()
262    
263            finally:
264                self.in_exception_dialog = 0
265                # delete the last exception info that python keeps in
266                # sys.last_* because especially last_traceback keeps
267                # indirect references to all objects bound to local
268                # variables and this might prevent some object from being
269                # collected early enough.
270                sys.last_type = sys.last_value = sys.last_traceback = None
271    
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