/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 937 by jonathan, Tue May 20 15:24:51 2003 UTC revision 2017 by bh, Wed Dec 3 18:43:03 2003 UTC
# 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, RasterLayer  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          if self.save_modified_session() != wxID_CANCEL:          if self.save_modified_session() != wxID_CANCEL:
             self.prepare_new_session()  
377              self.application.SetSession(create_empty_session())              self.application.SetSession(create_empty_session())
378    
379      def OpenSession(self):      def OpenSession(self):
# Line 373  class MainWindow(DockFrame): Line 382  class MainWindow(DockFrame):
382                                 "Thuban Session File (*.thuban)|*.thuban",                                 "Thuban Session File (*.thuban)|*.thuban",
383                                 wxOPEN)                                 wxOPEN)
384              if dlg.ShowModal() == wxID_OK:              if dlg.ShowModal() == wxID_OK:
385                  self.prepare_new_session()                  self.application.OpenSession(dlg.GetPath(),
386                  self.application.OpenSession(dlg.GetPath())                                               self.run_db_param_dialog)
387              dlg.Destroy()              dlg.Destroy()
388    
389        def run_db_param_dialog(self, parameters, message):
390            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
391                           message)
392            return dlg.RunDialog()
393    
394      def SaveSession(self):      def SaveSession(self):
395          if self.application.session.filename == None:          if self.application.session.filename == None:
396              self.SaveSessionAs()              self.SaveSessionAs()
# Line 395  class MainWindow(DockFrame): Line 409  class MainWindow(DockFrame):
409      def Exit(self):      def Exit(self):
410          self.Close(False)          self.Close(False)
411    
412      def _OnClose(self, event):      def OnClose(self, event):
413          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
414          if result == wxID_CANCEL:          if result == wxID_CANCEL:
415              event.Veto()              event.Veto()
# Line 404  class MainWindow(DockFrame): Line 418  class MainWindow(DockFrame):
418              # wx's destroy event, but that isn't implemented for wxGTK              # wx's destroy event, but that isn't implemented for wxGTK
419              # yet.              # yet.
420              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
421              DockFrame._OnClose(self, event)              DockFrame.OnClose(self, event)
422                for dlg in self.dialogs.values():
423                    dlg.Destroy()
424                self.canvas.Destroy()
425              self.Destroy()              self.Destroy()
426    
427      def SetMap(self, map):      def SetMap(self, map):
428          self.canvas.SetMap(map)          self.canvas.SetMap(map)
429          self.__SetTitle(map.Title())          self.update_title()
430    
431          dialog = self.FindRegisteredDock("legend")          dialog = self.FindRegisteredDock("legend")
432          if dialog is not None:          if dialog is not None:
# Line 436  class MainWindow(DockFrame): Line 453  class MainWindow(DockFrame):
453          return self.get_open_dialog("session_tree") is not None          return self.get_open_dialog("session_tree") is not None
454    
455      def About(self):      def About(self):
456          self.RunMessageBox(_("About"),          dlg = About(self)
457                             _("Thuban %s\n"          dlg.ShowModal()
458                              #"Build Date: %s\n"          dlg.Destroy()
459                              "using:\n"  
460                              "  %s\n"      def DatabaseManagement(self):
461                              "  %s\n\n"          name = "dbmanagement"
462                              "Thuban is a program for\n"          dialog = self.get_open_dialog(name)
463                              "exploring geographic data.\n"          if dialog is None:
464                              "Copyright (C) 2001-2003 Intevation GmbH.\n"              map = self.canvas.Map()
465                              "Thuban is licensed under the GNU GPL"              dialog = DBFrame(self, name, self.application.Session())
466                              % (Thuban.version.longversion,              self.add_dialog(name, dialog)
467                                 "wxPython %s" % wxPython_version,              dialog.Show()
468                                 "Python %d.%d.%d" % sys.version_info[:3]          dialog.Raise()
                               )),  
 #                           % __ThubanVersion__), #__BuildDate__)),  
                            wxOK | wxICON_INFORMATION)  
469    
470      def AddLayer(self):      def AddLayer(self):
471          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"), ".", "",
472                             wxOPEN)                             _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
473                               _("All Files (*.*)") + "|*.*",
474                               wxOPEN | wxMULTIPLE)
475          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
476              filename = dlg.GetPath()              filenames = dlg.GetPaths()
477              title = os.path.splitext(os.path.basename(filename))[0]              for filename in filenames:
478              store = self.application.Session().OpenShapefile(filename)                  title = os.path.splitext(os.path.basename(filename))[0]
479              layer = Layer(title, store)                  map = self.canvas.Map()
480              map = self.canvas.Map()                  has_layers = map.HasLayers()
481              has_layers = map.HasLayers()                  try:
482              try:                      store = self.application.Session().OpenShapefile(filename)
483                  map.AddLayer(layer)                  except IOError:
484              except IOError:                      # the layer couldn't be opened
485                  # the layer couldn't be opened                      self.RunMessageBox(_("Add Layer"),
486                  self.RunMessageBox(_("Add Layer"),                                         _("Can't open the file '%s'.")%filename)
487                                     _("Can't open the file '%s'.") % filename)                  else:
488              else:                      layer = Layer(title, store)
489                  if not has_layers:                      map.AddLayer(layer)
490                      # if we're adding a layer to an empty map, fit the                      if not has_layers:
491                      # new map to the window                          # if we're adding a layer to an empty map, fit the
492                      self.canvas.FitMapToWindow()                          # new map to the window
493                            self.canvas.FitMapToWindow()
494          dlg.Destroy()          dlg.Destroy()
495    
496      def AddRasterLayer(self):      def AddRasterLayer(self):
# Line 482  class MainWindow(DockFrame): Line 499  class MainWindow(DockFrame):
499          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
500              filename = dlg.GetPath()              filename = dlg.GetPath()
501              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = RasterLayer(title, filename)  
502              map = self.canvas.Map()              map = self.canvas.Map()
503              has_layers = map.HasLayers()              has_layers = map.HasLayers()
504              try:              try:
505                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
506              except IOError:              except IOError:
507                  # the layer couldn't be opened                  # the layer couldn't be opened
508                  self.RunMessageBox(_("Add Image Layer"),                  self.RunMessageBox(_("Add Image Layer"),
509                                     _("Can't open the file '%s'.") % filename)                                     _("Can't open the file '%s'.") % filename)
510              else:              else:
511                    map.AddLayer(layer)
512                  if not has_layers:                  if not has_layers:
513                      # if we're adding a layer to an empty map, fit the                      # if we're adding a layer to an empty map, fit the
514                      # new map to the window                      # new map to the window
515                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
516          dlg.Destroy()          dlg.Destroy()
517    
518        def AddDBLayer(self):
519            """Add a layer read from a database"""
520            session = self.application.Session()
521            dlg = ChooseDBTableDialog(self, self.application.Session())
522    
523            if dlg.ShowModal() == wxID_OK:
524                dbconn, dbtable = dlg.GetTable()
525                try:
526                    title = str(dbtable)
527    
528                    # Chose the correct Interface for the database type
529                    store = PostGISShapeStore(dbconn, dbtable)
530                    session.AddShapeStore(store)
531                    layer = Layer(title, store)
532                except:
533                    # Some error occured while initializing the layer
534                    self.RunMessageBox(_("Add Layer from database"),
535                                       _("Can't open the database table '%s'")
536                                       % dbtable)
537    
538                map = self.canvas.Map()
539    
540                has_layers = map.HasLayers()
541                map.AddLayer(layer)
542                if not has_layers:
543                    self.canvas.FitMapToWindow()
544    
545            dlg.Destroy()
546    
547      def RemoveLayer(self):      def RemoveLayer(self):
548          layer = self.current_layer()          layer = self.current_layer()
549          if layer is not None:          if layer is not None:
# Line 545  class MainWindow(DockFrame): Line 591  class MainWindow(DockFrame):
591          layer = self.current_layer()          layer = self.current_layer()
592          if layer is not None:          if layer is not None:
593              layer.SetVisible(0)              layer.SetVisible(0)
594            
595      def ShowLayer(self):      def ShowLayer(self):
596          layer = self.current_layer()          layer = self.current_layer()
597          if layer is not None:          if layer is not None:
598              layer.SetVisible(1)              layer.SetVisible(1)
599    
600        def DuplicateLayer(self):
601            """Ceate a new layer above the selected layer with the same shapestore
602            """
603            layer = self.current_layer()
604            if layer is not None and hasattr(layer, "ShapeStore"):
605                new_layer = Layer(_("Copy of `%s'") % layer.Title(),
606                                  layer.ShapeStore(),
607                                  projection = layer.GetProjection())
608                new_classification = copy.deepcopy(layer.GetClassification())
609                new_layer.SetClassification(new_classification)
610                self.Map().AddLayer(new_layer)
611    
612        def CanDuplicateLayer(self):
613            """Return whether the DuplicateLayer method can create a duplicate"""
614            layer = self.current_layer()
615            return layer is not None and hasattr(layer, "ShapeStore")
616    
617      def LayerShowTable(self):      def LayerShowTable(self):
618          layer = self.current_layer()          layer = self.current_layer()
619          if layer is not None:          if layer is not None:
620              table = layer.table              table = layer.ShapeStore().Table()
621              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
622              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
623              if dialog is None:              if dialog is None:
624                  dialog = tableview.LayerTableFrame(self, name,                  dialog = tableview.LayerTableFrame(self, name,
625                                                 _("Table: %s") % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
626                                                     layer, table)                                           layer, table)
627                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
628                  dialog.Show(true)                  dialog.Show(True)
629              else:              else:
630                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
631                  pass                  pass
# Line 611  class MainWindow(DockFrame): Line 674  class MainWindow(DockFrame):
674          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
675    
676          if dialog is None:          if dialog is None:
677              dialog = Classifier(self, name, layer, group)              dialog = Classifier(self, name, self.Map(), layer, group)
678              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
679              dialog.Show()              dialog.Show()
680          dialog.Raise()          dialog.Raise()
681    
682      def LayerJoinTable(self):      def LayerJoinTable(self):
683          print "LayerJoinTable"          layer = self.canvas.SelectedLayer()
684            if layer is not None:
685                dlg = JoinDialog(self, _("Join Layer with Table"),
686                                 self.application.session,
687                                 layer = layer)
688                dlg.ShowModal()
689    
690      def LayerUnjoinTable(self):      def LayerUnjoinTable(self):
691          print "LayerUnjoinTable"          layer = self.canvas.SelectedLayer()
692            if layer is not None:
693                orig_store = layer.ShapeStore().OrigShapeStore()
694                if orig_store:
695                    layer.SetShapeStore(orig_store)
696    
697      def ShowLegend(self):      def ShowLegend(self):
698          if not self.LegendShown():          if not self.LegendShown():
# Line 646  class MainWindow(DockFrame): Line 718  class MainWindow(DockFrame):
718          return dialog is not None and dialog.IsShown()          return dialog is not None and dialog.IsShown()
719    
720      def TableOpen(self):      def TableOpen(self):
         print "TableOpen"  
721          dlg = wxFileDialog(self, _("Open Table"), ".", "",          dlg = wxFileDialog(self, _("Open Table"), ".", "",
722                             "DBF Files (*.dbf)|*.dbf|" +                             _("DBF Files (*.dbf)") + "|*.dbf|" +
723                             "CSV Files (*.csv)|*.csv|" +                             #_("CSV Files (*.csv)") + "|*.csv|" +
724                             "All Files (*.*)|*.*",                             _("All Files (*.*)") + "|*.*",
725                             wxOPEN)                             wxOPEN)
726          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
727              #self.application.session.OpenTable(dlg.GetPath())              filename = dlg.GetPath()
728              pass              dlg.Destroy()
729                try:
730          dlg.Destroy()                  table = self.application.session.OpenTableFile(filename)
731                except IOError:
732                    # the layer couldn't be opened
733                    self.RunMessageBox(_("Open Table"),
734                                       _("Can't open the file '%s'.") % filename)
735                else:
736                    self.ShowTableView(table)
737    
738      def TableClose(self):      def TableClose(self):
739          print "TableClose"          tables = self.application.session.UnreferencedTables()
740    
741            lst = [(t.Title(), t) for t in tables]
742            lst.sort()
743            titles = [i[0] for i in lst]
744            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
745                                         _("Close Table"), titles,
746                                         size = (400, 300),
747                                         style = wxDEFAULT_DIALOG_STYLE |
748                                                 wxRESIZE_BORDER)
749            if dlg.ShowModal() == wxID_OK:
750                for i in dlg.GetValue():
751                    self.application.session.RemoveTable(lst[i][1])
752    
753    
754      def TableShow(self):      def TableShow(self):
755          print "TableShow"          """Offer a multi-selection dialog for tables to be displayed
756    
757            The windows for the selected tables are opened or brought to
758            the front.
759            """
760            tables = self.application.session.Tables()
761    
762      def TableHide(self):          lst = [(t.Title(), t) for t in tables]
763          print "TableHide"          lst.sort()
764            titles = [i[0] for i in lst]
765            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
766                                         _("Show Table"), titles,
767                                         size = (400,300),
768                                         style = wxDEFAULT_DIALOG_STYLE |
769                                                 wxRESIZE_BORDER)
770            if (dlg.ShowModal() == wxID_OK):
771                for i in dlg.GetValue():
772                    # XXX: if the table belongs to a layer, open a
773                    # LayerTableFrame instead of QueryTableFrame
774                    self.ShowTableView(lst[i][1])
775    
776      def TableJoin(self):      def TableJoin(self):
         print "TableJoin"  
777          dlg = JoinDialog(self, _("Join Tables"), self.application.session)          dlg = JoinDialog(self, _("Join Tables"), self.application.session)
778          if dlg.ShowModal() == wxID_OK:          dlg.ShowModal()
779              print "OK"  
780        def ShowTableView(self, table):
781            """Open a table view for the table and optionally"""
782            name = "table_view%d" % id(table)
783            dialog = self.get_open_dialog(name)
784            if dialog is None:
785                dialog = tableview.QueryTableFrame(self, name,
786                                                   _("Table: %s") % table.Title(),
787                                                   table)
788                self.add_dialog(name, dialog)
789                dialog.Show(True)
790            dialog.Raise()
791    
792        def TableRename(self):
793            """Let the user rename a table"""
794    
795            # First, let the user select a table
796            tables = self.application.session.Tables()
797            lst = [(t.Title(), t) for t in tables]
798            lst.sort()
799            titles = [i[0] for i in lst]
800            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
801                                         _("Rename Table"), titles,
802                                         size = (400,300),
803                                         style = wxDEFAULT_DIALOG_STYLE |
804                                                 wxRESIZE_BORDER)
805            if (dlg.ShowModal() == wxID_OK):
806                to_rename = [lst[i][1] for i in dlg.GetValue()]
807                dlg.Destroy()
808            else:
809                to_rename = []
810    
811            # Second, let the user rename the layers
812            for table in to_rename:
813                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
814                                        table.Title())
815                try:
816                    if dlg.ShowModal() == wxID_OK:
817                        title = dlg.GetValue()
818                        if title != "":
819                            table.SetTitle(title)
820    
821                            # Make sure the session is marked as modified.
822                            # FIXME: This should be handled automatically,
823                            # but that requires more changes to the tables
824                            # than I have time for currently.
825                            self.application.session.changed()
826                finally:
827                    dlg.Destroy()
828    
829    
830      def ZoomInTool(self):      def ZoomInTool(self):
831          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 711  class MainWindow(DockFrame): Line 865  class MainWindow(DockFrame):
865              title = dlg.GetValue()              title = dlg.GetValue()
866              if title != "":              if title != "":
867                  self.Map().SetTitle(title)                  self.Map().SetTitle(title)
                 self.__SetTitle(title)  
868    
869          dlg.Destroy()          dlg.Destroy()
870    
871        def RenameLayer(self):
872            """Let the user rename the currently selected layer"""
873            layer = self.current_layer()
874            if layer is not None:
875                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
876                                        layer.Title())
877                try:
878                    if dlg.ShowModal() == wxID_OK:
879                        title = dlg.GetValue()
880                        if title != "":
881                            layer.SetTitle(title)
882                finally:
883                    dlg.Destroy()
884    
885      def identify_view_on_demand(self, layer, shapes):      def identify_view_on_demand(self, layer, shapes):
886          """Subscribed to the canvas' SHAPES_SELECTED message          """Subscribed to the canvas' SHAPES_SELECTED message
887    
# Line 739  class MainWindow(DockFrame): Line 906  class MainWindow(DockFrame):
906                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
907                  pass                  pass
908    
909      def __SetTitle(self, title):      def title_changed(self, map):
910          self.SetTitle("Thuban - " + title)          """Subscribed to the canvas' TITLE_CHANGED messages"""
911            self.update_title()
912    
913        def update_title(self):
914            """Update the window's title according to it's current state.
915    
916            In this default implementation the title is 'Thuban - ' followed
917            by the map's title or simply 'Thuban' if there is not map.
918            Derived classes should override this method to get different
919            titles.
920    
921            This method is called automatically by other methods when the
922            title may have to change. For the methods implemented in this
923            class this usually only means that a different map has been set
924            or the current map's title has changed.
925            """
926            map = self.Map()
927            if map is not None:
928                title = _("Thuban - %s") % (map.Title(),)
929            else:
930                title = _("Thuban")
931            self.SetTitle(title)
932    
933    
934  #  #
935  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 808  def _has_legend_shown(context): Line 997  def _has_legend_shown(context):
997      """Return true if the legend window is shown"""      """Return true if the legend window is shown"""
998      return context.mainwindow.LegendShown()      return context.mainwindow.LegendShown()
999    
1000    def _has_gdal_support(context):
1001        """Return True if the GDAL is available"""
1002        return Thuban.Model.resource.has_gdal_support()
1003    
1004    def _has_dbconnections(context):
1005        """Return whether the the session has database connections"""
1006        return context.session.HasDBConnections()
1007    
1008    def _has_postgis_support(context):
1009        return has_postgis_support()
1010    
1011    
1012  # File menu  # File menu
1013  _method_command("new_session", _("&New Session"), "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1014  _method_command("open_session", _("&Open Session..."), "OpenSession")                  helptext = _("Start a new session"))
1015  _method_command("save_session", _("&Save Session"), "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1016  _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs")                  helptext = _("Open a session file"))
1017    _method_command("save_session", _("&Save Session"), "SaveSession",
1018                    helptext =_("Save this session to the file it was opened from"))
1019    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1020                    helptext = _("Save this session to a new file"))
1021  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1022                  checked = _has_tree_window_shown)                  checked = _has_tree_window_shown,
1023                    helptext = _("Toggle on/off the session tree analysis window"))
1024  _method_command("toggle_legend", _("Legend"), "ToggleLegend",  _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1025                  checked = _has_legend_shown)                  checked = _has_legend_shown,
1026  _method_command("exit", _("E&xit"), "Exit")                  helptext = _("Toggle Legend on/off"))
1027    _method_command("database_management", _("&Database Connections..."),
1028                    "DatabaseManagement",
1029                    sensitive = _has_postgis_support)
1030    _method_command("exit", _("E&xit"), "Exit",
1031                    helptext = _("Finish working with Thuban"))
1032    
1033  # Help menu  # Help menu
1034  _method_command("help_about", _("&About..."), "About")  _method_command("help_about", _("&About..."), "About",
1035                    helptext = _("Info about Thuban authors, version and modules"))
1036    
1037    
1038  # Map menu  # Map menu
1039  _method_command("map_projection", _("Pro&jection..."), "MapProjection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1040                    helptext = _("Set or change the map projection"))
1041    
1042  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1043                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
# Line 844  _tool_command("map_label_tool", _("&Labe Line 1056  _tool_command("map_label_tool", _("&Labe
1056                helptext = _("Add/Remove labels"), icon = "label",                helptext = _("Add/Remove labels"), icon = "label",
1057                sensitive = _has_visible_map)                sensitive = _has_visible_map)
1058  _method_command("map_full_extent", _("&Full extent"), "FullExtent",  _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1059                 helptext = _("Full Extent"), icon = "fullextent",                 helptext = _("Zoom to the full map extent"), icon = "fullextent",
1060                sensitive = _has_visible_map)                sensitive = _has_visible_map)
1061  _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",  _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1062                 helptext = _("Full Layer Extent"), icon = "fulllayerextent",                  helptext = _("Zoom to the full layer extent"),
1063                sensitive = _has_selected_layer)                  icon = "fulllayerextent", sensitive = _has_selected_layer)
1064  _method_command("selected_full_extent", _("&Full selection extent"), "FullSelectionExtent",  _method_command("selected_full_extent", _("&Full selection extent"),
1065                 helptext = _("Full Selection Extent"), icon = "fullselextent",                  "FullSelectionExtent",
1066                sensitive = _has_selected_shapes)                  helptext = _("Zoom to the full selection extent"),
1067                    icon = "fullselextent", sensitive = _has_selected_shapes)
1068  _method_command("map_export", _("E&xport"), "ExportMap",  _method_command("map_export", _("E&xport"), "ExportMap",
1069                      helptext = _("Export the map to file"))                  helptext = _("Export the map to file"))
1070  _method_command("map_print", _("Prin&t"), "PrintMap",  _method_command("map_print", _("Prin&t"), "PrintMap",
1071                  helptext = _("Print the map"))                  helptext = _("Print the map"))
1072  _method_command("map_rename", _("&Rename..."), "RenameMap",  _method_command("map_rename", _("&Rename..."), "RenameMap",
1073                  helptext = _("Rename the map"))                  helptext = _("Rename the map"))
1074  _method_command("layer_add", _("&Add Layer..."), "AddLayer",  _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1075                  helptext = _("Add a new layer to active map"))                  helptext = _("Add a new layer to the map"))
1076  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1077                  helptext = _("Add a new image layer to active map"))                  helptext = _("Add a new image layer to the map"),
1078                    sensitive = _has_gdal_support)
1079    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1080                    helptext = _("Add a new database layer to active map"),
1081                    sensitive = _has_dbconnections)
1082  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1083                  helptext = _("Remove selected layer(s)"),                  helptext = _("Remove selected layer"),
1084                  sensitive = _can_remove_layer)                  sensitive = _can_remove_layer)
1085    
1086  # Layer menu  # Layer menu
1087  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1088                    sensitive = _has_selected_layer,
1089                    helptext = _("Specify projection for selected layer"))
1090    _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1091                    helptext = _("Duplicate selected layer"),
1092              sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1093    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1094                    helptext = _("Rename selected layer"),
1095                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1096  _method_command("layer_raise", _("&Raise"), "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1097                  helptext = _("Raise selected layer(s)"),                  helptext = _("Raise selected layer"),
1098                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1099  _method_command("layer_lower", _("&Lower"), "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1100                  helptext = _("Lower selected layer(s)"),                  helptext = _("Lower selected layer"),
1101                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1102  _method_command("layer_show", _("&Show"), "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1103                  helptext = _("Make selected layer(s) visible"),                  helptext = _("Make selected layer visible"),
1104                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1105  _method_command("layer_hide", _("&Hide"), "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1106                  helptext = _("Make selected layer(s) unvisible"),                  helptext = _("Make selected layer unvisible"),
1107                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1108  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1109                  helptext = _("Show the selected layer's table"),                  helptext = _("Show the selected layer's table"),
1110                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1111  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1112                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer,
1113                    helptext = _("Edit the properties of the selected layer"))
1114  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1115                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer,
1116                    helptext = _("Join and attach a table to the selected layer"))
1117    
1118    def _can_unjoin(context):
1119        """Return whether the Layer/Unjoin command can be executed.
1120    
1121        This is the case if a layer is selected and that layer has a
1122        shapestore that has an original shapestore.
1123        """
1124        layer = context.mainwindow.SelectedLayer()
1125        if layer is None:
1126            return 0
1127        getstore = getattr(layer, "ShapeStore", None)
1128        if getstore is not None:
1129            return getstore().OrigShapeStore() is not None
1130        else:
1131            return 0
1132  _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",  _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1133                  sensitive = _has_selected_layer)                  sensitive = _can_unjoin,
1134                    helptext = _("Undo the last join operation"))
1135    
1136    
1137    def _has_tables(context):
1138        return bool(context.session.Tables())
1139    
1140  # Table menu  # Table menu
1141  _method_command("table_open", _("&Open..."), "TableOpen")  _method_command("table_open", _("&Open..."), "TableOpen",
1142  _method_command("table_close", _("&Close"), "TableClose")                  helptext = _("Open a DBF-table from a file"))
1143  _method_command("table_show", _("&Show"), "TableShow")  _method_command("table_close", _("&Close..."), "TableClose",
1144  _method_command("table_hide", _("&Hide"), "TableHide")         sensitive = lambda context: bool(context.session.UnreferencedTables()),
1145  _method_command("table_join", _("&Join..."), "TableJoin")                  helptext = _("Close one or more tables from a list"))
1146    _method_command("table_rename", _("&Rename..."), "TableRename",
1147                    sensitive = _has_tables,
1148                    helptext = _("Rename one or more tables"))
1149    _method_command("table_show", _("&Show..."), "TableShow",
1150                    sensitive = _has_tables,
1151                    helptext = _("Show one or more tables in a dialog"))
1152    _method_command("table_join", _("&Join..."), "TableJoin",
1153                    sensitive = _has_tables,
1154                    helptext = _("Join two tables creating a new one"))
1155    
1156  #  Export only under Windows ...  #  Export only under Windows ...
1157  map_menu = ["layer_add", "rasterlayer_add", "layer_remove", "map_rename",  map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1158                          None,                          None,
1159                            "map_rename",
1160                          "map_projection",                          "map_projection",
1161                          None,                          None,
1162                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1163                          "map_pan_tool",                          "map_pan_tool",
1164                          "map_full_extent",                          "map_full_extent",
1165                          "layer_full_extent",                          "layer_full_extent",
1166                          "selected_full_extent",                          "selected_full_extent",
1167                          None,                          None,
# Line 922  main_menu = Menu("<main>", "<main>", Line 1178  main_menu = Menu("<main>", "<main>",
1178                   [Menu("file", _("&File"),                   [Menu("file", _("&File"),
1179                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
1180                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
1181                            "database_management", None,
1182                          "toggle_session_tree", None,                          "toggle_session_tree", None,
1183                          "exit"]),                          "exit"]),
1184                    Menu("map", _("&Map"), map_menu),                    Menu("map", _("&Map"), map_menu),
1185                    Menu("layer", _("&Layer"),                    Menu("layer", _("&Layer"),
1186                          ["layer_raise", "layer_lower",                         ["layer_rename", "layer_duplicate",
1187                            None,
1188                            "layer_raise", "layer_lower",
1189                          None,                          None,
1190                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1191                          None,                          None,
# Line 938  main_menu = Menu("<main>", "<main>", Line 1197  main_menu = Menu("<main>", "<main>",
1197                          None,                          None,
1198                          "layer_properties"]),                          "layer_properties"]),
1199                    Menu("table", _("&Table"),                    Menu("table", _("&Table"),
1200                         ["table_open", "table_close",                         ["table_open", "table_close", "table_rename",
1201                         None,                         None,
1202                         "table_show", "table_hide",                         "table_show",
1203                         None,                         None,
1204                         "table_join"]),                         "table_join"]),
1205                    Menu("help", _("&Help"),                    Menu("help", _("&Help"),
# Line 955  main_toolbar = Menu("<toolbar>", "<toolb Line 1214  main_toolbar = Menu("<toolbar>", "<toolb
1214                       "selected_full_extent",                       "selected_full_extent",
1215                       None,                       None,
1216                       "map_identify_tool", "map_label_tool"])                       "map_identify_tool", "map_label_tool"])
1217    
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