/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 923 by frank, Mon May 19 09:12:25 2003 UTC revision 2184 by jan, Fri Apr 16 08:21:12 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 12  The main window Line 12  The main window
12  """  """
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    # $Source$
16  __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"  # $Id$
 #__BuildDate__ = "$Date$"  
17    
18  import os  import os
19    import copy
20    
21  from wxPython.wx import *  from wxPython.wx import *
 from wxPython.wx import __version__ as wxPython_version  
22    
23  import Thuban  import Thuban
 import Thuban.version  
24    
25  from Thuban import _  from Thuban import _
26    from Thuban.Model.messages import TITLE_CHANGED
27  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
28  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
29  from Thuban.Model.color import Color  from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
30  from Thuban.Model.proj import Projection  # XXX: replace this by
31    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
32    # when Thuban does not support wxPython 2.4.0 any more.
33    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
34    
35  import view  import view
36  import tree  import tree
 import proj4dialog  
37  import tableview, identifyview  import tableview, identifyview
38  from Thuban.UI.classifier import Classifier  from Thuban.UI.classifier import Classifier
39  import legend  import legend
# Line 40  from menu import Menu Line 41  from menu import Menu
41    
42  from context import Context  from context import Context
43  from command import registry, Command, ToolCommand  from command import registry, Command, ToolCommand
44  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
45         MAP_REPLACED
46    from about import About
47    
48  from Thuban.UI.dock import DockFrame  from Thuban.UI.dock import DockFrame
49  from Thuban.UI.join import JoinDialog  from Thuban.UI.join import JoinDialog
50    from Thuban.UI.dbdialog import DBFrame, DBDialog, ChooseDBTableDialog
51  import resource  import resource
52    import Thuban.Model.resource
53    
54  import projdialog  import projdialog
55    
56    
   
57  class MainWindow(DockFrame):  class MainWindow(DockFrame):
58    
59      # Some messages that can be subscribed/unsubscribed directly through      # Some messages that can be subscribed/unsubscribed directly through
# Line 59  class MainWindow(DockFrame): Line 62  class MainWindow(DockFrame):
62      # actually come from. This delegation is implemented in the      # actually come from. This delegation is implemented in the
63      # Subscribe and unsubscribed methods      # Subscribe and unsubscribed methods
64      delegated_messages = {LAYER_SELECTED: "canvas",      delegated_messages = {LAYER_SELECTED: "canvas",
65                            SHAPES_SELECTED: "canvas"}                            SHAPES_SELECTED: "canvas",
66                              MAP_REPLACED: "canvas"}
67    
68      # Methods delegated to some instance variables. The delegation is      # Methods delegated to some instance variables. The delegation is
69      # implemented in the __getattr__ method.      # implemented in the __getattr__ method.
70      delegated_methods = {"SelectLayer": "canvas",      delegated_methods = {"SelectLayer": "canvas",
71                           "SelectShapes": "canvas",                           "SelectShapes": "canvas",
72                             "SelectedLayer": "canvas",
73                           "SelectedShapes": "canvas",                           "SelectedShapes": "canvas",
74                           }                           }
75    
# Line 97  class MainWindow(DockFrame): Line 102  class MainWindow(DockFrame):
102          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
103          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
104          self.canvas = canvas          self.canvas = canvas
105            self.canvas.Subscribe(TITLE_CHANGED, self.title_changed)
106    
107          self.SetMainWindow(self.canvas)          self.SetMainWindow(self.canvas)
108    
# Line 104  class MainWindow(DockFrame): Line 110  class MainWindow(DockFrame):
110    
111          self.init_dialogs()          self.init_dialogs()
112    
113          EVT_CLOSE(self, self._OnClose)          self.ShowLegend()
114    
115            EVT_CLOSE(self, self.OnClose)
116    
117      def Subscribe(self, channel, *args):      def Subscribe(self, channel, *args):
118          """Subscribe a function to a message channel.          """Subscribe a function to a message channel.
# Line 126  class MainWindow(DockFrame): Line 134  class MainWindow(DockFrame):
134          """          """
135          if channel in self.delegated_messages:          if channel in self.delegated_messages:
136              object = getattr(self, self.delegated_messages[channel])              object = getattr(self, self.delegated_messages[channel])
137              object.Unsubscribe(channel, *args)              try:
138                    object.Unsubscribe(channel, *args)
139                except wxPyDeadObjectError:
140                    # The object was a wxObject and has already been
141                    # destroyed. Hopefully it has unsubscribed all its
142                    # subscribers already so that it's OK if we do nothing
143                    # here
144                    pass
145    
146      def __getattr__(self, attr):      def __getattr__(self, attr):
147          """If attr is one of the delegated methods return that method          """If attr is one of the delegated methods return that method
# Line 357  class MainWindow(DockFrame): Line 372  class MainWindow(DockFrame):
372              result = wxID_NO              result = wxID_NO
373          return result          return result
374    
     def prepare_new_session(self):  
         for d in self.dialogs.values():  
             if not isinstance(d, tree.SessionTreeView):  
                 d.Close()  
   
375      def NewSession(self):      def NewSession(self):
376          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
377          self.prepare_new_session()              self.application.SetSession(create_empty_session())
         self.application.SetSession(create_empty_session())  
378    
379      def OpenSession(self):      def OpenSession(self):
380          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
381          dlg = wxFileDialog(self, _("Open Session"), ".", "",              dlg = wxFileDialog(self, _("Open Session"),
382                             "Thuban Session File (*.thuban)|*.thuban", wxOPEN)                                 self.application.Path("data"), "",
383          if dlg.ShowModal() == wxID_OK:                                 "Thuban Session File (*.thuban)|*.thuban",
384              self.prepare_new_session()                                 wxOPEN)
385              self.application.OpenSession(dlg.GetPath())              if dlg.ShowModal() == wxID_OK:
386          dlg.Destroy()                  self.application.OpenSession(dlg.GetPath(),
387                                                 self.run_db_param_dialog)
388                    self.application.SetPath("data", dlg.GetPath())
389                dlg.Destroy()
390    
391        def run_db_param_dialog(self, parameters, message):
392            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
393                           message)
394            return dlg.RunDialog()
395    
396      def SaveSession(self):      def SaveSession(self):
397          if self.application.session.filename == None:          if self.application.session.filename == None:
# Line 383  class MainWindow(DockFrame): Line 400  class MainWindow(DockFrame):
400              self.application.SaveSession()              self.application.SaveSession()
401    
402      def SaveSessionAs(self):      def SaveSessionAs(self):
403          dlg = wxFileDialog(self, _("Save Session As"), ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
404                               self.application.Path("data"), "",
405                             "Thuban Session File (*.thuban)|*.thuban",                             "Thuban Session File (*.thuban)|*.thuban",
406                             wxSAVE|wxOVERWRITE_PROMPT)                             wxSAVE|wxOVERWRITE_PROMPT)
407          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
408              self.application.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
409              self.application.SaveSession()              self.application.SaveSession()
410                self.application.SetPath("data",dlg.GetPath())
411          dlg.Destroy()          dlg.Destroy()
412    
413      def Exit(self):      def Exit(self):
414          self.Close(False)          self.Close(False)
415    
416      def _OnClose(self, event):      def OnClose(self, event):
417          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
418          if result == wxID_CANCEL:          if result == wxID_CANCEL:
419              event.Veto()              event.Veto()
# Line 403  class MainWindow(DockFrame): Line 422  class MainWindow(DockFrame):
422              # wx's destroy event, but that isn't implemented for wxGTK              # wx's destroy event, but that isn't implemented for wxGTK
423              # yet.              # yet.
424              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
425              DockFrame._OnClose(self, event)              DockFrame.OnClose(self, event)
426                for dlg in self.dialogs.values():
427                    dlg.Destroy()
428                self.canvas.Destroy()
429              self.Destroy()              self.Destroy()
430    
431      def SetMap(self, map):      def SetMap(self, map):
432          self.canvas.SetMap(map)          self.canvas.SetMap(map)
433          self.__SetTitle(map.Title())          self.update_title()
434    
435          dialog = self.FindRegisteredDock("legend")          dialog = self.FindRegisteredDock("legend")
436          if dialog is not None:          if dialog is not None:
# Line 435  class MainWindow(DockFrame): Line 457  class MainWindow(DockFrame):
457          return self.get_open_dialog("session_tree") is not None          return self.get_open_dialog("session_tree") is not None
458    
459      def About(self):      def About(self):
460          self.RunMessageBox(_("About"),          dlg = About(self)
461                             _("Thuban %s\n"          dlg.ShowModal()
462                              #"Build Date: %s\n"          dlg.Destroy()
463                              "using:\n"  
464                              "  %s\n"      def DatabaseManagement(self):
465                              "  %s\n\n"          name = "dbmanagement"
466                              "Thuban is a program for\n"          dialog = self.get_open_dialog(name)
467                              "exploring geographic data.\n"          if dialog is None:
468                              "Copyright (C) 2001-2003 Intevation GmbH.\n"              map = self.canvas.Map()
469                              "Thuban is licensed under the GNU GPL"              dialog = DBFrame(self, name, self.application.Session())
470                              % (Thuban.version.longversion,              self.add_dialog(name, dialog)
471                                 "wxPython %s" % wxPython_version,              dialog.Show()
472                                 "Python %d.%d.%d" % sys.version_info[:3]          dialog.Raise()
                               )),  
 #                           % __ThubanVersion__), #__BuildDate__)),  
                            wxOK | wxICON_INFORMATION)  
473    
474      def AddLayer(self):      def AddLayer(self):
475          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
476                               self.application.Path("data"), "",
477                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
478                               _("All Files (*.*)") + "|*.*",
479                               wxOPEN | wxMULTIPLE)
480            if dlg.ShowModal() == wxID_OK:
481                filenames = dlg.GetPaths()
482                for filename in filenames:
483                    title = os.path.splitext(os.path.basename(filename))[0]
484                    map = self.canvas.Map()
485                    has_layers = map.HasLayers()
486                    try:
487                        store = self.application.Session().OpenShapefile(filename)
488                    except IOError:
489                        # the layer couldn't be opened
490                        self.RunMessageBox(_("Add Layer"),
491                                           _("Can't open the file '%s'.")%filename)
492                    else:
493                        layer = Layer(title, store)
494                        map.AddLayer(layer)
495                        if not has_layers:
496                            # if we're adding a layer to an empty map, fit the
497                            # new map to the window
498                            self.canvas.FitMapToWindow()
499                        self.application.SetPath("data",filename)
500            dlg.Destroy()
501    
502        def AddRasterLayer(self):
503            dlg = wxFileDialog(self, _("Select an image file"),
504                               self.application.Path("data"), "", "*.*",
505                             wxOPEN)                             wxOPEN)
506          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
507              filename = dlg.GetPath()              filename = dlg.GetPath()
508              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             store = self.application.Session().OpenShapefile(filename)  
             layer = Layer(title, store)  
509              map = self.canvas.Map()              map = self.canvas.Map()
510              has_layers = map.HasLayers()              has_layers = map.HasLayers()
511              try:              try:
512                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
513              except IOError:              except IOError:
514                  # the layer couldn't be opened                  # the layer couldn't be opened
515                  self.RunMessageBox(_("Add Layer"),                  self.RunMessageBox(_("Add Image Layer"),
516                                     _("Can't open the file '%s'.") % filename)                                     _("Can't open the file '%s'.") % filename)
517              else:              else:
518                    map.AddLayer(layer)
519                  if not has_layers:                  if not has_layers:
520                      # if we're adding a layer to an empty map, fit the                      # if we're adding a layer to an empty map, fit the
521                      # new map to the window                      # new map to the window
522                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
523                    self.application.SetPath("data", filename)
524            dlg.Destroy()
525    
526        def AddDBLayer(self):
527            """Add a layer read from a database"""
528            session = self.application.Session()
529            dlg = ChooseDBTableDialog(self, self.application.Session())
530    
531            if dlg.ShowModal() == wxID_OK:
532                dbconn, dbtable, id_column, geo_column = dlg.GetTable()
533                try:
534                    title = str(dbtable)
535    
536                    # Chose the correct Interface for the database type
537                    store = session.OpenDBShapeStore(dbconn, dbtable,
538                                                     id_column = id_column,
539                                                     geometry_column = geo_column)
540                    layer = Layer(title, store)
541                except:
542                    # Some error occured while initializing the layer
543                    self.RunMessageBox(_("Add Layer from database"),
544                                       _("Can't open the database table '%s'")
545                                       % dbtable)
546                    return
547    
548                map = self.canvas.Map()
549    
550                has_layers = map.HasLayers()
551                map.AddLayer(layer)
552                if not has_layers:
553                    self.canvas.FitMapToWindow()
554    
555          dlg.Destroy()          dlg.Destroy()
556    
557      def RemoveLayer(self):      def RemoveLayer(self):
# Line 514  class MainWindow(DockFrame): Line 593  class MainWindow(DockFrame):
593          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
594          return self.canvas.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
595    
596        def has_selected_shape_layer(self):
597            """Return true if a shape layer is currently selected"""
598            return isinstance(self.current_layer(), Layer)
599    
600      def has_selected_shapes(self):      def has_selected_shapes(self):
601          """Return true if a shape is currently selected"""          """Return true if a shape is currently selected"""
602          return self.canvas.HasSelectedShapes()          return self.canvas.HasSelectedShapes()
# Line 522  class MainWindow(DockFrame): Line 605  class MainWindow(DockFrame):
605          layer = self.current_layer()          layer = self.current_layer()
606          if layer is not None:          if layer is not None:
607              layer.SetVisible(0)              layer.SetVisible(0)
608            
609      def ShowLayer(self):      def ShowLayer(self):
610          layer = self.current_layer()          layer = self.current_layer()
611          if layer is not None:          if layer is not None:
612              layer.SetVisible(1)              layer.SetVisible(1)
613    
614        def DuplicateLayer(self):
615            """Ceate a new layer above the selected layer with the same shapestore
616            """
617            layer = self.current_layer()
618            if layer is not None and hasattr(layer, "ShapeStore"):
619                new_layer = Layer(_("Copy of `%s'") % layer.Title(),
620                                  layer.ShapeStore(),
621                                  projection = layer.GetProjection())
622                new_classification = copy.deepcopy(layer.GetClassification())
623                new_layer.SetClassification(new_classification)
624                self.Map().AddLayer(new_layer)
625    
626        def CanDuplicateLayer(self):
627            """Return whether the DuplicateLayer method can create a duplicate"""
628            layer = self.current_layer()
629            return layer is not None and hasattr(layer, "ShapeStore")
630    
631      def LayerShowTable(self):      def LayerShowTable(self):
632            """
633            Present a TableView Window for the current layer.
634            In case the window is already open, bring it to the front.
635            In case, there is no active layer, do nothing.
636            In case, the layer has not ShapeStore, raise a corresponding message dialog
637            and do nothing else.
638            """
639          layer = self.current_layer()          layer = self.current_layer()
640          if layer is not None:          if layer is not None:
641              table = layer.table              if not hasattr(layer, "ShapeStore"):
642                    self.RunMessageBox(_("Show Table"),
643                                       _("The layer '%s' has no table." % layer.Title()))
644                    return
645                table = layer.ShapeStore().Table()
646              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
647              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
648              if dialog is None:              if dialog is None:
649                  dialog = tableview.LayerTableFrame(self, name,                  dialog = tableview.LayerTableFrame(self, name,
650                                                 _("Table: %s") % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
651                                                     layer, table)                                           layer, table)
652                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
653                  dialog.Show(true)                  dialog.Show(True)
654              else:              else:
655                  # FIXME: bring dialog to front here                  dialog.Raise()
                 pass  
656    
657      def MapProjection(self):      def MapProjection(self):
658    
# Line 588  class MainWindow(DockFrame): Line 698  class MainWindow(DockFrame):
698          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
699    
700          if dialog is None:          if dialog is None:
701              dialog = Classifier(self, name, layer, group)              dialog = Classifier(self, name, self.Map(), layer, group)
702              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
703              dialog.Show()              dialog.Show()
704          dialog.Raise()          dialog.Raise()
705    
706      def LayerJoinTable(self):      def LayerJoinTable(self):
707          print "LayerJoinTable"          layer = self.canvas.SelectedLayer()
708            if layer is not None:
709                dlg = JoinDialog(self, _("Join Layer with Table"),
710                                 self.application.session,
711                                 layer = layer)
712                dlg.ShowModal()
713    
714      def LayerUnjoinTable(self):      def LayerUnjoinTable(self):
715          print "LayerUnjoinTable"          layer = self.canvas.SelectedLayer()
716            if layer is not None:
717                orig_store = layer.ShapeStore().OrigShapeStore()
718                if orig_store:
719                    layer.SetShapeStore(orig_store)
720    
721      def ShowLegend(self):      def ShowLegend(self):
722          if not self.LegendShown():          if not self.LegendShown():
# Line 623  class MainWindow(DockFrame): Line 742  class MainWindow(DockFrame):
742          return dialog is not None and dialog.IsShown()          return dialog is not None and dialog.IsShown()
743    
744      def TableOpen(self):      def TableOpen(self):
745          print "TableOpen"          dlg = wxFileDialog(self, _("Open Table"),
746          dlg = wxFileDialog(self, _("Open Table"), ".", "",                             self.application.Path("data"), "",
747                             "DBF Files (*.dbf)|*.dbf|" +                             _("DBF Files (*.dbf)") + "|*.dbf|" +
748                             "CSV Files (*.csv)|*.csv|" +                             #_("CSV Files (*.csv)") + "|*.csv|" +
749                             "All Files (*.*)|*.*",                             _("All Files (*.*)") + "|*.*",
750                             wxOPEN)                             wxOPEN)
751          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
752              #self.application.session.OpenTable(dlg.GetPath())              filename = dlg.GetPath()
753              pass              dlg.Destroy()
754                try:
755          dlg.Destroy()                  table = self.application.session.OpenTableFile(filename)
756                except IOError:
757                    # the layer couldn't be opened
758                    self.RunMessageBox(_("Open Table"),
759                                       _("Can't open the file '%s'.") % filename)
760                else:
761                    self.ShowTableView(table)
762                    self.application.SetPath("data",filename)
763    
764      def TableClose(self):      def TableClose(self):
765          print "TableClose"          tables = self.application.session.UnreferencedTables()
766    
767            lst = [(t.Title(), t) for t in tables]
768            lst.sort()
769            titles = [i[0] for i in lst]
770            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
771                                         _("Close Table"), titles,
772                                         size = (400, 300),
773                                         style = wxDEFAULT_DIALOG_STYLE |
774                                                 wxRESIZE_BORDER)
775            if dlg.ShowModal() == wxID_OK:
776                for i in dlg.GetValue():
777                    self.application.session.RemoveTable(lst[i][1])
778    
779    
780      def TableShow(self):      def TableShow(self):
781          print "TableShow"          """Offer a multi-selection dialog for tables to be displayed
782    
783            The windows for the selected tables are opened or brought to
784            the front.
785            """
786            tables = self.application.session.Tables()
787    
788      def TableHide(self):          lst = [(t.Title(), t) for t in tables]
789          print "TableHide"          lst.sort()
790            titles = [i[0] for i in lst]
791            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
792                                         _("Show Table"), titles,
793                                         size = (400,300),
794                                         style = wxDEFAULT_DIALOG_STYLE |
795                                                 wxRESIZE_BORDER)
796            if (dlg.ShowModal() == wxID_OK):
797                for i in dlg.GetValue():
798                    # XXX: if the table belongs to a layer, open a
799                    # LayerTableFrame instead of QueryTableFrame
800                    self.ShowTableView(lst[i][1])
801    
802      def TableJoin(self):      def TableJoin(self):
         print "TableJoin"  
803          dlg = JoinDialog(self, _("Join Tables"), self.application.session)          dlg = JoinDialog(self, _("Join Tables"), self.application.session)
804          if dlg.ShowModal() == wxID_OK:          dlg.ShowModal()
805              print "OK"  
806        def ShowTableView(self, table):
807            """Open a table view for the table and optionally"""
808            name = "table_view%d" % id(table)
809            dialog = self.get_open_dialog(name)
810            if dialog is None:
811                dialog = tableview.QueryTableFrame(self, name,
812                                                   _("Table: %s") % table.Title(),
813                                                   table)
814                self.add_dialog(name, dialog)
815                dialog.Show(True)
816            dialog.Raise()
817    
818        def TableRename(self):
819            """Let the user rename a table"""
820    
821            # First, let the user select a table
822            tables = self.application.session.Tables()
823            lst = [(t.Title(), t) for t in tables]
824            lst.sort()
825            titles = [i[0] for i in lst]
826            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
827                                         _("Rename Table"), titles,
828                                         size = (400,300),
829                                         style = wxDEFAULT_DIALOG_STYLE |
830                                                 wxRESIZE_BORDER)
831            if (dlg.ShowModal() == wxID_OK):
832                to_rename = [lst[i][1] for i in dlg.GetValue()]
833                dlg.Destroy()
834            else:
835                to_rename = []
836    
837            # Second, let the user rename the layers
838            for table in to_rename:
839                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
840                                        table.Title())
841                try:
842                    if dlg.ShowModal() == wxID_OK:
843                        title = dlg.GetValue()
844                        if title != "":
845                            table.SetTitle(title)
846    
847                            # Make sure the session is marked as modified.
848                            # FIXME: This should be handled automatically,
849                            # but that requires more changes to the tables
850                            # than I have time for currently.
851                            self.application.session.changed()
852                finally:
853                    dlg.Destroy()
854    
855    
856      def ZoomInTool(self):      def ZoomInTool(self):
857          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 682  class MainWindow(DockFrame): Line 885  class MainWindow(DockFrame):
885          self.canvas.Print()          self.canvas.Print()
886    
887      def RenameMap(self):      def RenameMap(self):
888          dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",          dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
889                                  self.Map().Title())                                  self.Map().Title())
890          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
891              title = dlg.GetValue()              title = dlg.GetValue()
892              if title != "":              if title != "":
893                  self.Map().SetTitle(title)                  self.Map().SetTitle(title)
                 self.__SetTitle(title)  
894    
895          dlg.Destroy()          dlg.Destroy()
896    
897        def RenameLayer(self):
898            """Let the user rename the currently selected layer"""
899            layer = self.current_layer()
900            if layer is not None:
901                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
902                                        layer.Title())
903                try:
904                    if dlg.ShowModal() == wxID_OK:
905                        title = dlg.GetValue()
906                        if title != "":
907                            layer.SetTitle(title)
908                finally:
909                    dlg.Destroy()
910    
911      def identify_view_on_demand(self, layer, shapes):      def identify_view_on_demand(self, layer, shapes):
912          """Subscribed to the canvas' SHAPES_SELECTED message          """Subscribed to the canvas' SHAPES_SELECTED message
913    
# Line 716  class MainWindow(DockFrame): Line 932  class MainWindow(DockFrame):
932                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
933                  pass                  pass
934    
935      def __SetTitle(self, title):      def title_changed(self, map):
936          self.SetTitle("Thuban - " + title)          """Subscribed to the canvas' TITLE_CHANGED messages"""
937            self.update_title()
938    
939        def update_title(self):
940            """Update the window's title according to it's current state.
941    
942            In this default implementation the title is 'Thuban - ' followed
943            by the map's title or simply 'Thuban' if there is not map.
944            Derived classes should override this method to get different
945            titles.
946    
947            This method is called automatically by other methods when the
948            title may have to change. For the methods implemented in this
949            class this usually only means that a different map has been set
950            or the current map's title has changed.
951            """
952            map = self.Map()
953            if map is not None:
954                title = _("Thuban - %s") % (map.Title(),)
955            else:
956                title = _("Thuban")
957            self.SetTitle(title)
958    
959    
960  #  #
961  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 759  def _has_selected_layer(context): Line 997  def _has_selected_layer(context):
997      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
998      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
999    
1000    def _has_selected_shape_layer(context):
1001        """Return true if a shape layer is selected in the context"""
1002        return context.mainwindow.has_selected_shape_layer()
1003    
1004  def _has_selected_shapes(context):  def _has_selected_shapes(context):
1005      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
1006      return context.mainwindow.has_selected_shapes()      return context.mainwindow.has_selected_shapes()
# Line 785  def _has_legend_shown(context): Line 1027  def _has_legend_shown(context):
1027      """Return true if the legend window is shown"""      """Return true if the legend window is shown"""
1028      return context.mainwindow.LegendShown()      return context.mainwindow.LegendShown()
1029    
1030    def _has_gdal_support(context):
1031        """Return True if the GDAL is available"""
1032        return Thuban.Model.resource.has_gdal_support()
1033    
1034    def _has_dbconnections(context):
1035        """Return whether the the session has database connections"""
1036        return context.session.HasDBConnections()
1037    
1038    def _has_postgis_support(context):
1039        return has_postgis_support()
1040    
1041    
1042  # File menu  # File menu
1043  _method_command("new_session", _("&New Session"), "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1044  _method_command("open_session", _("&Open Session..."), "OpenSession")                  helptext = _("Start a new session"))
1045  _method_command("save_session", _("&Save Session"), "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1046  _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs")                  helptext = _("Open a session file"))
1047    _method_command("save_session", _("&Save Session"), "SaveSession",
1048                    helptext =_("Save this session to the file it was opened from"))
1049    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1050                    helptext = _("Save this session to a new file"))
1051  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1052                  checked = _has_tree_window_shown)                  checked = _has_tree_window_shown,
1053                    helptext = _("Toggle on/off the session tree analysis window"))
1054  _method_command("toggle_legend", _("Legend"), "ToggleLegend",  _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1055                  checked = _has_legend_shown)                  checked = _has_legend_shown,
1056  _method_command("exit", _("E&xit"), "Exit")                  helptext = _("Toggle Legend on/off"))
1057    _method_command("database_management", _("&Database Connections..."),
1058                    "DatabaseManagement",
1059                    sensitive = _has_postgis_support)
1060    _method_command("exit", _("E&xit"), "Exit",
1061                    helptext = _("Finish working with Thuban"))
1062    
1063  # Help menu  # Help menu
1064  _method_command("help_about", _("&About..."), "About")  _method_command("help_about", _("&About..."), "About",
1065                    helptext = _("Info about Thuban authors, version and modules"))
1066    
1067    
1068  # Map menu  # Map menu
1069  _method_command("map_projection", _("Pro&jection..."), "MapProjection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1070                    helptext = _("Set or change the map projection"))
1071    
1072  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1073                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
# Line 821  _tool_command("map_label_tool", _("&Labe Line 1086  _tool_command("map_label_tool", _("&Labe
1086                helptext = _("Add/Remove labels"), icon = "label",                helptext = _("Add/Remove labels"), icon = "label",
1087                sensitive = _has_visible_map)                sensitive = _has_visible_map)
1088  _method_command("map_full_extent", _("&Full extent"), "FullExtent",  _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1089                 helptext = _("Full Extent"), icon = "fullextent",                 helptext = _("Zoom to the full map extent"), icon = "fullextent",
1090                sensitive = _has_visible_map)                sensitive = _has_visible_map)
1091  _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",  _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1092                 helptext = _("Full Layer Extent"), icon = "fulllayerextent",                  helptext = _("Zoom to the full layer extent"),
1093                sensitive = _has_selected_layer)                  icon = "fulllayerextent", sensitive = _has_selected_layer)
1094  _method_command("selected_full_extent", _("&Full selection extent"), "FullSelectionExtent",  _method_command("selected_full_extent", _("&Full selection extent"),
1095                 helptext = _("Full Selection Extent"), icon = "fullselextent",                  "FullSelectionExtent",
1096                sensitive = _has_selected_shapes)                  helptext = _("Zoom to the full selection extent"),
1097                    icon = "fullselextent", sensitive = _has_selected_shapes)
1098  _method_command("map_export", _("E&xport"), "ExportMap",  _method_command("map_export", _("E&xport"), "ExportMap",
1099                      helptext = _("Export the map to file"))                  helptext = _("Export the map to file"))
1100  _method_command("map_print", _("Prin&t"), "PrintMap",  _method_command("map_print", _("Prin&t"), "PrintMap",
1101                  helptext = _("Print the map"))                  helptext = _("Print the map"))
1102  _method_command("map_rename", _("&Rename..."), "RenameMap",  _method_command("map_rename", _("&Rename..."), "RenameMap",
1103                  helptext = _("Rename the map"))                  helptext = _("Rename the map"))
1104  _method_command("layer_add", _("&Add Layer..."), "AddLayer",  _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1105                  helptext = _("Add a new layer to active map"))                  helptext = _("Add a new layer to the map"))
1106    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1107                    helptext = _("Add a new image layer to the map"),
1108                    sensitive = _has_gdal_support)
1109    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1110                    helptext = _("Add a new database layer to active map"),
1111                    sensitive = _has_dbconnections)
1112  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1113                  helptext = _("Remove selected layer(s)"),                  helptext = _("Remove selected layer"),
1114                  sensitive = _can_remove_layer)                  sensitive = _can_remove_layer)
1115    
1116  # Layer menu  # Layer menu
1117  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1118                    sensitive = _has_selected_layer,
1119                    helptext = _("Specify projection for selected layer"))
1120    _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1121                    helptext = _("Duplicate selected layer"),
1122              sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1123    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1124                    helptext = _("Rename selected layer"),
1125                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1126  _method_command("layer_raise", _("&Raise"), "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1127                  helptext = _("Raise selected layer(s)"),                  helptext = _("Raise selected layer"),
1128                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1129  _method_command("layer_lower", _("&Lower"), "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1130                  helptext = _("Lower selected layer(s)"),                  helptext = _("Lower selected layer"),
1131                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1132  _method_command("layer_show", _("&Show"), "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1133                  helptext = _("Make selected layer(s) visible"),                  helptext = _("Make selected layer visible"),
1134                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1135  _method_command("layer_hide", _("&Hide"), "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1136                  helptext = _("Make selected layer(s) unvisible"),                  helptext = _("Make selected layer unvisible"),
1137                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1138  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1139                  helptext = _("Show the selected layer's table"),                  helptext = _("Show the selected layer's table"),
1140                  sensitive = _has_selected_layer)                  sensitive = _has_selected_shape_layer)
1141  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1142                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer,
1143                    helptext = _("Edit the properties of the selected layer"))
1144  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1145                  sensitive = _has_selected_layer)                  sensitive = _has_selected_shape_layer,
1146                    helptext = _("Join and attach a table to the selected layer"))
1147    
1148    def _can_unjoin(context):
1149        """Return whether the Layer/Unjoin command can be executed.
1150    
1151        This is the case if a layer is selected and that layer has a
1152        shapestore that has an original shapestore.
1153        """
1154        layer = context.mainwindow.SelectedLayer()
1155        if layer is None:
1156            return 0
1157        getstore = getattr(layer, "ShapeStore", None)
1158        if getstore is not None:
1159            return getstore().OrigShapeStore() is not None
1160        else:
1161            return 0
1162  _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",  _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1163                  sensitive = _has_selected_layer)                  sensitive = _can_unjoin,
1164                    helptext = _("Undo the last join operation"))
1165    
1166    
1167    def _has_tables(context):
1168        return bool(context.session.Tables())
1169    
1170  # Table menu  # Table menu
1171  _method_command("table_open", _("&Open..."), "TableOpen")  _method_command("table_open", _("&Open..."), "TableOpen",
1172  _method_command("table_close", _("&Close"), "TableClose")                  helptext = _("Open a DBF-table from a file"))
1173  _method_command("table_show", _("&Show"), "TableShow")  _method_command("table_close", _("&Close..."), "TableClose",
1174  _method_command("table_hide", _("&Hide"), "TableHide")         sensitive = lambda context: bool(context.session.UnreferencedTables()),
1175  _method_command("table_join", _("&Join..."), "TableJoin")                  helptext = _("Close one or more tables from a list"))
1176    _method_command("table_rename", _("&Rename..."), "TableRename",
1177                    sensitive = _has_tables,
1178                    helptext = _("Rename one or more tables"))
1179    _method_command("table_show", _("&Show..."), "TableShow",
1180                    sensitive = _has_tables,
1181                    helptext = _("Show one or more tables in a dialog"))
1182    _method_command("table_join", _("&Join..."), "TableJoin",
1183                    sensitive = _has_tables,
1184                    helptext = _("Join two tables creating a new one"))
1185    
1186  #  Export only under Windows ...  #  Export only under Windows ...
1187  map_menu = ["layer_add", "layer_remove", "map_rename",  map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1188                          None,                          None,
1189                            "map_rename",
1190                          "map_projection",                          "map_projection",
1191                          None,                          None,
1192                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1193                          "map_pan_tool",                          "map_pan_tool",
1194                          "map_full_extent",                          "map_full_extent",
1195                          "layer_full_extent",                          "layer_full_extent",
1196                          "selected_full_extent",                          "selected_full_extent",
1197                          None,                          None,
# Line 897  main_menu = Menu("<main>", "<main>", Line 1208  main_menu = Menu("<main>", "<main>",
1208                   [Menu("file", _("&File"),                   [Menu("file", _("&File"),
1209                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
1210                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
1211                            "database_management", None,
1212                          "toggle_session_tree", None,                          "toggle_session_tree", None,
1213                          "exit"]),                          "exit"]),
1214                    Menu("map", _("&Map"), map_menu),                    Menu("map", _("&Map"), map_menu),
1215                    Menu("layer", _("&Layer"),                    Menu("layer", _("&Layer"),
1216                          ["layer_raise", "layer_lower",                         ["layer_rename", "layer_duplicate",
1217                            None,
1218                            "layer_raise", "layer_lower",
1219                          None,                          None,
1220                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1221                          None,                          None,
# Line 913  main_menu = Menu("<main>", "<main>", Line 1227  main_menu = Menu("<main>", "<main>",
1227                          None,                          None,
1228                          "layer_properties"]),                          "layer_properties"]),
1229                    Menu("table", _("&Table"),                    Menu("table", _("&Table"),
1230                         ["table_open", "table_close",                         ["table_open", "table_close", "table_rename",
1231                         None,                         None,
1232                         "table_show", "table_hide",                         "table_show",
1233                         None,                         None,
1234                         "table_join"]),                         "table_join"]),
1235                    Menu("help", _("&Help"),                    Menu("help", _("&Help"),
# Line 930  main_toolbar = Menu("<toolbar>", "<toolb Line 1244  main_toolbar = Menu("<toolbar>", "<toolb
1244                       "selected_full_extent",                       "selected_full_extent",
1245                       None,                       None,
1246                       "map_identify_tool", "map_label_tool"])                       "map_identify_tool", "map_label_tool"])
1247    
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