/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/application.py
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revision 1650 by bh, Mon Aug 25 15:05:49 2003 UTC revision 2076 by bh, Thu Feb 19 15:19:39 2004 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002, 2003 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003, 2004 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
# 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 *
 from wxPython.lib.dialogs import wxScrolledMessageDialog  
21    
22  from Thuban.Lib.connector import Publisher  from Thuban.Lib.connector import Publisher
23  from Thuban.Lib.fileutil import get_application_dir  from Thuban.Lib.fileutil import get_application_dir
# Line 34  import Thuban.Model.resource Line 33  import Thuban.Model.resource
33  import view  import view
34  import tree  import tree
35  import mainwindow  import mainwindow
36    import dbdialog
37    import exceptiondialog
38    
39  from messages import SESSION_REPLACED  from messages import SESSION_REPLACED
40    
# Line 50  class ThubanApplication(wxApp, Publisher Line 51  class ThubanApplication(wxApp, Publisher
51    
52      def OnInit(self):      def OnInit(self):
53          sys.excepthook = self.ShowExceptionDialog          sys.excepthook = self.ShowExceptionDialog
54    
55            # Initialize instance variables before trying to create any
56            # windows.  Creating windows can start an event loop if
57            # e.g. message boxes are popped up for some reason, and event
58            # handlers, especially EVT_UPDATE_UI may want to access things
59            # from the application.
60    
61            # Defaults for the directories used in file dialogs
62            self.path={"data":".", "projection":"."}
63    
64            self.session = None
65            self.top = None
66            self.create_session()
67    
68            # Create an optional splash screen and then the mainwindow
69          self.splash = self.splash_screen()          self.splash = self.splash_screen()
70          if self.splash is not None:          if self.splash is not None:
71              self.splash.Show()              self.splash.Show()
72          self.read_startup_files()          self.read_startup_files()
73          self.top = self.CreateMainWindow()          self.top = self.CreateMainWindow()
74            # The session was alredy created above and we need to get the
75            # map into the mainwindow.  maps_changed does that.
76            self.maps_changed()
77          self.SetTopWindow(self.top)          self.SetTopWindow(self.top)
78          if self.splash is None:          if self.splash is None:
79              self.ShowMainWindow()              self.ShowMainWindow()
80          self.session = None  
         self.create_session()  
81          return True          return True
82    
83      def OnExit(self):      def OnExit(self):
# Line 163  class ThubanApplication(wxApp, Publisher Line 181  class ThubanApplication(wxApp, Publisher
181              self.unsubscribe_session(oldsession)              self.unsubscribe_session(oldsession)
182              oldsession.Destroy()              oldsession.Destroy()
183    
184        def SetPath(self, group, filename):
185            """Store the application's default path for file dialogs extracted
186            from a given filename.
187            """
188            self.path[group] = os.path.dirname( filename )
189    
190        def Path(self, group):
191            """Return the application's default path for file dialogs."""
192            return self.path[group]
193    
194      def subscribe_session(self, session):      def subscribe_session(self, session):
195          """Subscribe to some of the sessions channels.          """Subscribe to some of the sessions channels.
196    
# Line 195  class ThubanApplication(wxApp, Publisher Line 223  class ThubanApplication(wxApp, Publisher
223          # get problems when saving because the saving code expects an          # get problems when saving because the saving code expects an
224          # absolute directory name          # absolute directory name
225          filename = os.path.abspath(filename)          filename = os.path.abspath(filename)
226            if db_connection_callback is None:
227                db_connection_callback = self.run_db_param_dialog
228          try:          try:
229              session = load_session(filename,              session = load_session(filename,
230                                 db_connection_callback=db_connection_callback)                                 db_connection_callback=db_connection_callback)
# Line 220  class ThubanApplication(wxApp, Publisher Line 250  class ThubanApplication(wxApp, Publisher
250                      dlg.Destroy()                      dlg.Destroy()
251                      break                      break
252    
253        def run_db_param_dialog(self, parameters, message):
254            """Implementation of the db_connection_callback for loading sessions"""
255            dlg = dbdialog.DBDialog(None, _("DB Connection Parameters"),
256                                    parameters, message)
257            return dlg.RunDialog()
258    
259    
260      def SaveSession(self):      def SaveSession(self):
261          save_session(self.session, self.session.filename)          save_session(self.session, self.session.filename)
262    
263      def maps_changed(self, *args):      def maps_changed(self, *args):
264          if self.session.HasMaps():          """Subscribed to the session's MAPS_CHANGED messages.
265              self.top.SetMap(self.session.Maps()[0])  
266          else:          Set the toplevel window's map to the map in the session. This is
267              self.top.SetMap(None)          done by calling the window's SetMap method with the map as
268            argument. If the session doesn't have any maps None is used
269            instead.
270    
271            Currently Thuban can only really handle at most one map in a
272            sessions so the first map in the session's list of maps as
273            returned by the Maps method is used.
274            """
275            # The mainwindow may not have been created yet, so check whether
276            # it has been created before calling any of its methods
277            if self.top is not None:
278                if self.session.HasMaps():
279                    self.top.SetMap(self.session.Maps()[0])
280                else:
281                    self.top.SetMap(None)
282    
283      in_exception_dialog = 0 # flag: are we already inside the exception dialog?      in_exception_dialog = 0 # flag: are we already inside the exception dialog?
284    
# Line 249  class ThubanApplication(wxApp, Publisher Line 300  class ThubanApplication(wxApp, Publisher
300          try:          try:
301              lines = traceback.format_exception(exc_type, exc_value,              lines = traceback.format_exception(exc_type, exc_value,
302                                              exc_traceback)                                              exc_traceback)
303              message = "An unhandled exception occurred:\n%s\n" % exc_value+\              message = _("An unhandled exception occurred:\n%s\n"
304                      "(please report to " \                          "(please report to"
305                      "http://thuban.intevation.org/bugtracker.html)"\                          " http://thuban.intevation.org/bugtracker.html)"
306                      "\n\n\n"+\                          "\n\n%s") % (exc_value, "".join(lines))
                     "".join(lines)  
307              print message              print message
308    
309              # We don't use an explicit parent here because this method might              # We don't use an explicit parent here because this method might
310              # be called in circumstances where the main window doesn't exist              # be called in circumstances where the main window doesn't exist
311              # anymore.              # anymore.
312              dlg = wxScrolledMessageDialog(None, message,              exceptiondialog.run_exception_dialog(None, message)
                                         "Thuban: Internal Error")  
             dlg.ShowModal()  
             dlg.Destroy()  
313    
314          finally:          finally:
315              self.in_exception_dialog = 0              self.in_exception_dialog = 0
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