/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 270 by bh, Thu Aug 22 13:46:46 2002 UTC revision 1622 by jan, Thu Aug 21 11:56:06 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003 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]>
5    # Frank Koormann <[email protected]>
6  #  #
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 12  The main window Line 13  The main window
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    
16    __ThubanVersion__ = "0.8" #"$THUBAN_0_2$"
17    #__BuildDate__ = "$Date$"
18    
19  import os  import os
20    import copy
21    
22  from wxPython.wx import *  from wxPython.wx import *
23    from wxPython.wx import __version__ as wxPython_version
24    
25  import Thuban  import Thuban
26    import Thuban.version
27    
28    from Thuban import _
29  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
30  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
31  from Thuban.Model.color import Color  from Thuban.Model.postgisdb import PostGISShapeStore
32  from Thuban.Model.proj import Projection  # XXX: replace this by
33    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
34    # when Thuban does not support wxPython 2.4.0 any more.
35    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
36    
37  import view  import view
38  import tree  import tree
 import proj4dialog  
39  import tableview, identifyview  import tableview, identifyview
40    from Thuban.UI.classifier import Classifier
41    import legend
42  from menu import Menu  from menu import Menu
43    
44  from context import Context  from context import Context
45  from command import registry, Command  from command import registry, Command, ToolCommand
46  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
47         MAP_REPLACED
48    from about import About
49  # the directory where the toolbar icons are stored  
50  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  from Thuban.UI.dock import DockFrame
51  bitmapext = ".xpm"  from Thuban.UI.join import JoinDialog
52    from Thuban.UI.dbdialog import DBFrame, ChooseDBTableDialog
53    import resource
54  class MainWindow(wxFrame):  import Thuban.Model.resource
55    
56    import projdialog
57    
58    
59    class MainWindow(DockFrame):
60    
61        # Some messages that can be subscribed/unsubscribed directly through
62        # the MapCanvas come in fact from other objects. This is a map to
63        # map those messages to the names of the instance variables they
64        # actually come from. This delegation is implemented in the
65        # Subscribe and unsubscribed methods
66        delegated_messages = {LAYER_SELECTED: "canvas",
67                              SHAPES_SELECTED: "canvas",
68                              MAP_REPLACED: "canvas"}
69    
70        # Methods delegated to some instance variables. The delegation is
71        # implemented in the __getattr__ method.
72        delegated_methods = {"SelectLayer": "canvas",
73                             "SelectShapes": "canvas",
74                             "SelectedLayer": "canvas",
75                             "SelectedShapes": "canvas",
76                             }
77    
78      def __init__(self, parent, ID, title, application, interactor,      def __init__(self, parent, ID, title, application, interactor,
79                   initial_message = None, size = wxSize(-1, -1)):                   initial_message = None, size = wxSize(-1, -1)):
80          wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)          DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
81            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
82    
83          self.application = application          self.application = application
         self.interactor = interactor  
84    
85          self.CreateStatusBar()          self.CreateStatusBar()
86          if initial_message:          if initial_message:
# Line 63  class MainWindow(wxFrame): Line 98  class MainWindow(wxFrame):
98          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
99          toolbar.Realize()          toolbar.Realize()
100    
101    
102          # Create the map canvas          # Create the map canvas
103          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
104          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
105            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
106          self.canvas = canvas          self.canvas = canvas
107    
108            self.SetMainWindow(self.canvas)
109    
110            self.SetAutoLayout(True)
111    
112          self.init_dialogs()          self.init_dialogs()
113    
114          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
115    
116          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
117    
118        def Subscribe(self, channel, *args):
119            """Subscribe a function to a message channel.
120    
121            If channel is one of the delegated messages call the appropriate
122            object's Subscribe method. Otherwise do nothing.
123            """
124            if channel in self.delegated_messages:
125                object = getattr(self, self.delegated_messages[channel])
126                object.Subscribe(channel, *args)
127            else:
128                print "Trying to subscribe to unsupported channel %s" % channel
129    
130        def Unsubscribe(self, channel, *args):
131            """Unsubscribe a function from a message channel.
132    
133            If channel is one of the delegated messages call the appropriate
134            object's Unsubscribe method. Otherwise do nothing.
135            """
136            if channel in self.delegated_messages:
137                object = getattr(self, self.delegated_messages[channel])
138                object.Unsubscribe(channel, *args)
139    
140        def __getattr__(self, attr):
141            """If attr is one of the delegated methods return that method
142    
143            Otherwise raise AttributeError.
144            """
145            if attr in self.delegated_methods:
146                return getattr(getattr(self, self.delegated_methods[attr]), attr)
147            raise AttributeError(attr)
148    
149      def init_ids(self):      def init_ids(self):
150          """Initialize the ids"""          """Initialize the ids"""
151          self.current_id = 6000          self.current_id = 6000
# Line 112  class MainWindow(wxFrame): Line 184  class MainWindow(wxFrame):
184          return menu_bar          return menu_bar
185    
186      def build_menu(self, menudesc):      def build_menu(self, menudesc):
187          """Build and return a wxMenu from a menudescription"""          """Return a wxMenu built from the menu description menudesc"""
188          wxmenu = wxMenu()          wxmenu = wxMenu()
189          last = None          last = None
190          for item in menudesc.items:          for item in menudesc.items:
             # here the items must all be Menu instances themselves  
191              if item is None:              if item is None:
192                  # a separator. Only add one if the last item was not a                  # a separator. Only add one if the last item was not a
193                  # separator                  # separator
# Line 169  class MainWindow(wxFrame): Line 240  class MainWindow(wxFrame):
240                              command.IsCheckCommand())                              command.IsCheckCommand())
241                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
242              else:              else:
243                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
244    
245      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
246          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 184  class MainWindow(wxFrame): Line 255  class MainWindow(wxFrame):
255              command = registry.Command(name)              command = registry.Command(name)
256              if command is not None:              if command is not None:
257                  ID = self.get_id(name)                  ID = self.get_id(name)
258                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
259                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
260                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
261                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
262                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
263                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
264              else:              else:
265                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
266    
267        def Context(self):
268            """Return the context object for a command invoked from this window
269            """
270            return Context(self.application, self.application.Session(), self)
271    
272      def invoke_command(self, event):      def invoke_command(self, event):
273          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
274          if name is not None:          if name is not None:
275              command = registry.Command(name)              command = registry.Command(name)
276              context = Context(self.application, self.application.Session(),              command.Execute(self.Context())
                               self)  
             command.Execute(context)  
277          else:          else:
278              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
279    
280      def update_command_ui(self, event):      def update_command_ui(self, event):
281          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
282          context = Context(self.application, self.application.Session(), self)          context = self.Context()
283          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
284          if command is not None:          if command is not None:
285              event.Enable(command.Sensitive(context))              sensitive = command.Sensitive(context)
286                event.Enable(sensitive)
287                if command.IsTool() and not sensitive and command.Checked(context):
288                    # When a checked tool command is disabled deselect all
289                    # tools. Otherwise the tool would remain active but it
290                    # might lead to errors if the tools stays active. This
291                    # problem occurred in GREAT-ER and this fixes it, but
292                    # it's not clear to me whether this is really the best
293                    # way to do it (BH, 20021206).
294                    self.canvas.SelectTool(None)
295              event.SetText(command.DynText(context))              event.SetText(command.DynText(context))
296              if command.IsCheckCommand():              if command.IsCheckCommand():
297                  event.Check(command.Checked(context))                      event.Check(command.Checked(context))
298    
299      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
300          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
301          and return the result"""          and return the result"""
302          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
303            dlg.CenterOnParent()
304          result = dlg.ShowModal()          result = dlg.ShowModal()
305          dlg.Destroy()          dlg.Destroy()
306          return result          return result
# Line 230  class MainWindow(wxFrame): Line 314  class MainWindow(wxFrame):
314    
315      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
316          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
317              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
318          self.dialogs[name] = dialog          self.dialogs[name] = dialog
319    
320      def dialog_open(self, name):      def dialog_open(self, name):
# Line 248  class MainWindow(wxFrame): Line 332  class MainWindow(wxFrame):
332              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
333          else:          else:
334              text = ""              text = ""
335            self.set_position_text(text)
336    
337        def set_position_text(self, text):
338            """Set the statusbar text showing the current position.
339    
340            By default the text is shown in field 0 of the status bar.
341            Override this method in derived classes to put it into a
342            different field of the statusbar.
343            """
344          self.SetStatusText(text)          self.SetStatusText(text)
345    
346      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
# Line 263  class MainWindow(wxFrame): Line 356  class MainWindow(wxFrame):
356              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
357              if can_veto:              if can_veto:
358                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
359              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
360                                          ("The session has been modified."                                          _("The session has been modified."
361                                           " Do you want to save it?"),                                           " Do you want to save it?"),
362                                          flags)                                          flags)
363              if result == wxID_YES:              if result == wxID_YES:
# Line 274  class MainWindow(wxFrame): Line 367  class MainWindow(wxFrame):
367          return result          return result
368    
369      def NewSession(self):      def NewSession(self):
370          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
371          self.application.SetSession(create_empty_session())              self.application.SetSession(create_empty_session())
372    
373      def OpenSession(self):      def OpenSession(self):
374          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
375          dlg = wxFileDialog(self, "Select a session file", ".", "",              dlg = wxFileDialog(self, _("Open Session"), ".", "",
376                             "*.thuban", wxOPEN)                                 "Thuban Session File (*.thuban)|*.thuban",
377          if dlg.ShowModal() == wxID_OK:                                 wxOPEN)
378              self.application.OpenSession(dlg.GetPath())              if dlg.ShowModal() == wxID_OK:
379          dlg.Destroy()                  self.application.OpenSession(dlg.GetPath())
380                dlg.Destroy()
381    
382      def SaveSession(self):      def SaveSession(self):
383          if self.application.session.filename == None:          if self.application.session.filename == None:
384              self.SaveSessionAs()              self.SaveSessionAs()
385          self.application.SaveSession()          else:
386                self.application.SaveSession()
387    
388      def SaveSessionAs(self):      def SaveSessionAs(self):
389          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
390                             "*.thuban", wxOPEN)                             "Thuban Session File (*.thuban)|*.thuban",
391                               wxSAVE|wxOVERWRITE_PROMPT)
392          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
393              self.application.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
394              self.application.SaveSession()              self.application.SaveSession()
395          dlg.Destroy()          dlg.Destroy()
396    
397      def Exit(self):      def Exit(self):
398          self.Close(false)          self.Close(False)
399    
400      def OnClose(self, event):      def OnClose(self, event):
401          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
402          if result == wxID_CANCEL:          if result == wxID_CANCEL:
403              event.Veto()              event.Veto()
404          else:          else:
405                # FIXME: it would be better to tie the unsubscription to
406                # wx's destroy event, but that isn't implemented for wxGTK
407                # yet.
408                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
409                DockFrame.OnClose(self, event)
410                for dlg in self.dialogs.values():
411                    dlg.Destroy()
412                self.canvas.Destroy()
413              self.Destroy()              self.Destroy()
414    
415      def SetMap(self, map):      def SetMap(self, map):
416          self.canvas.SetMap(map)          self.canvas.SetMap(map)
417            self.__SetTitle(map.Title())
418    
419      def ShowSessionTree(self):          dialog = self.FindRegisteredDock("legend")
420            if dialog is not None:
421                dialog.GetPanel().SetMap(self.Map())
422    
423        def Map(self):
424            """Return the map displayed by this mainwindow"""
425    
426            return self.canvas.Map()
427    
428        def ToggleSessionTree(self):
429            """If the session tree is shown close it otherwise create a new tree"""
430          name = "session_tree"          name = "session_tree"
431          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
432          if dialog is None:          if dialog is None:
433              dialog = tree.SessionTreeView(self, self.application, name)              dialog = tree.SessionTreeView(self, self.application, name)
434              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
435              dialog.Show(true)              dialog.Show(True)
436          else:          else:
437              # FIXME: bring dialog to front here              dialog.Close()
438              pass  
439        def SessionTreeShown(self):
440            """Return true iff the session tree is currently shown"""
441            return self.get_open_dialog("session_tree") is not None
442    
443      def About(self):      def About(self):
444          self.RunMessageBox("About",          dlg = About(self)
445                             ("Thuban is a program for\n"          dlg.ShowModal()
446                              "exploring geographic data.\n"          dlg.Destroy()
447                              "Copyright (C) 2001 Intevation GmbH.\n"  
448                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
449                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
450            dialog = self.get_open_dialog(name)
451            if dialog is None:
452                map = self.canvas.Map()
453                dialog = DBFrame(self, name, self.application.Session())
454                self.add_dialog(name, dialog)
455                dialog.Show()
456            dialog.Raise()
457    
458      def AddLayer(self):      def AddLayer(self):
459          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"), ".", "",
460                               _("Shapefiles (*.shp)") + "|*.shp|" +
461                               _("All Files (*.*)") + "|*.*",
462                               wxOPEN | wxMULTIPLE)
463            if dlg.ShowModal() == wxID_OK:
464                filenames = dlg.GetPaths()
465                for filename in filenames:
466                    title = os.path.splitext(os.path.basename(filename))[0]
467                    map = self.canvas.Map()
468                    has_layers = map.HasLayers()
469                    try:
470                        store = self.application.Session().OpenShapefile(filename)
471                    except IOError:
472                        # the layer couldn't be opened
473                        self.RunMessageBox(_("Add Layer"),
474                                           _("Can't open the file '%s'.")%filename)
475                    else:
476                        layer = Layer(title, store)
477                        map.AddLayer(layer)
478                        if not has_layers:
479                            # if we're adding a layer to an empty map, fit the
480                            # new map to the window
481                            self.canvas.FitMapToWindow()
482            dlg.Destroy()
483    
484        def AddRasterLayer(self):
485            dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",
486                             wxOPEN)                             wxOPEN)
487          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
488              filename = dlg.GetPath()              filename = dlg.GetPath()
489              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
490              map = self.canvas.Map()              map = self.canvas.Map()
491              has_layers = map.HasLayers()              has_layers = map.HasLayers()
492              try:              try:
493                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
494              except IOError:              except IOError:
495                  # the layer couldn't be opened                  # the layer couldn't be opened
496                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
497                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
498              else:              else:
499                    map.AddLayer(layer)
500                  if not has_layers:                  if not has_layers:
501                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
502                      # new map to the window                      # new map to the window
503                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
504          dlg.Destroy()          dlg.Destroy()
505    
506        def AddDBLayer(self):
507            """Add a layer read from a database"""
508            session = self.application.Session()
509            dlg = ChooseDBTableDialog(self.application.Session(), self,-1, "")
510    
511            if dlg.ShowModal() == wxID_OK:
512                dbconn, dbtable = dlg.GetTable()
513                try:
514                    title = str(dbtable)
515    
516                    # Chose the correct Interface for the database type
517                    store = PostGISShapeStore(dbconn, dbtable)
518                    session.AddShapeStore(store)
519                    layer = Layer(title, store)
520                except:
521                    # Some error occured while initializing the layer
522                    self.RunMessageBox(_("Add Layer from database"),
523                                       _("Can't open the database table '%s'")
524                                       % dbtable)
525    
526                map = self.canvas.Map()
527    
528                has_layers = map.HasLayers()
529                map.AddLayer(layer)
530                if not has_layers:
531                    self.canvas.FitMapToWindow()
532    
533            dlg.Destroy()
534    
535      def RemoveLayer(self):      def RemoveLayer(self):
536          layer = self.current_layer()          layer = self.current_layer()
537          if layer is not None:          if layer is not None:
538              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
539    
540        def CanRemoveLayer(self):
541            """Return true if the currently selected layer can be deleted.
542    
543            If no layer is selected return False.
544    
545            The return value of this method determines whether the remove
546            layer command is sensitive in menu.
547            """
548            layer = self.current_layer()
549            if layer is not None:
550                return self.canvas.Map().CanRemoveLayer(layer)
551            return False
552    
553      def RaiseLayer(self):      def RaiseLayer(self):
554          layer = self.current_layer()          layer = self.current_layer()
555          if layer is not None:          if layer is not None:
# Line 372  class MainWindow(wxFrame): Line 565  class MainWindow(wxFrame):
565    
566          If no layer is selected, return None          If no layer is selected, return None
567          """          """
568          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
569    
570      def has_selected_layer(self):      def has_selected_layer(self):
571          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
572          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
   
     def choose_color(self):  
         """Run the color selection dialog and return the selected color.  
573    
574          If the user cancels, return None.      def has_selected_shapes(self):
575          """          """Return true if a shape is currently selected"""
576          dlg = wxColourDialog(self)          return self.canvas.HasSelectedShapes()
         color = None  
         if dlg.ShowModal() == wxID_OK:  
             data = dlg.GetColourData()  
             wxc = data.GetColour()  
             color = Color(wxc.Red() / 255.0,  
                           wxc.Green() / 255.0,  
                           wxc.Blue() / 255.0)  
         dlg.Destroy()  
         return color  
   
     def LayerFillColor(self):  
         layer = self.current_layer()  
         if layer is not None:  
             color = self.choose_color()  
             if color is not None:  
                 layer.SetFill(color)  
577    
578      def LayerTransparentFill(self):      def HideLayer(self):
579          layer = self.current_layer()          layer = self.current_layer()
580          if layer is not None:          if layer is not None:
581              layer.SetFill(None)              layer.SetVisible(0)
582    
583      def LayerOutlineColor(self):      def ShowLayer(self):
584          layer = self.current_layer()          layer = self.current_layer()
585          if layer is not None:          if layer is not None:
586              color = self.choose_color()              layer.SetVisible(1)
             if color is not None:  
                 layer.SetStroke(color)  
587    
588      def LayerNoOutline(self):      def DuplicateLayer(self):
589            """Ceate a new layer above the selected layer with the same shapestore
590            """
591          layer = self.current_layer()          layer = self.current_layer()
592          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
593              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
594                                  layer.ShapeStore(),
595                                  projection = layer.GetProjection())
596                new_classification = copy.deepcopy(layer.GetClassification())
597                new_layer.SetClassification(new_classification)
598                self.Map().AddLayer(new_layer)
599    
600      def HideLayer(self):      def CanDuplicateLayer(self):
601          layer = self.current_layer()          """Return whether the DuplicateLayer method can create a duplicate"""
         if layer is not None:  
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
602          layer = self.current_layer()          layer = self.current_layer()
603          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(1)  
604    
605      def LayerShowTable(self):      def LayerShowTable(self):
606          layer = self.current_layer()          layer = self.current_layer()
607          if layer is not None:          if layer is not None:
608              table = layer.table              table = layer.ShapeStore().Table()
609              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
610              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
611              if dialog is None:              if dialog is None:
612                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
613                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
614                                                layer, table)                                           layer, table)
615                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
616                  dialog.Show(true)                  dialog.Show(True)
617              else:              else:
618                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
619                  pass                  pass
620    
621      def Projection(self):      def MapProjection(self):
622          map = self.canvas.Map()  
623          proj = map.projection          name = "map_projection"
624          if proj is None:          dialog = self.get_open_dialog(name)
625              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())  
626          else:          if dialog is None:
627              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              map = self.canvas.Map()
628                                                 map.BoundingBox())              dialog = projdialog.ProjFrame(self, name,
629          if proj4Dlg.ShowModal() == wxID_OK:                       _("Map Projection: %s") % map.Title(), map)
630              params = proj4Dlg.GetParams()              self.add_dialog(name, dialog)
631              if params is not None:              dialog.Show()
632                  proj = Projection(params)          dialog.Raise()
633    
634        def LayerProjection(self):
635    
636            layer = self.current_layer()
637    
638            name = "layer_projection" + str(id(layer))
639            dialog = self.get_open_dialog(name)
640    
641            if dialog is None:
642                map = self.canvas.Map()
643                dialog = projdialog.ProjFrame(self, name,
644                         _("Layer Projection: %s") % layer.Title(), layer)
645                self.add_dialog(name, dialog)
646                dialog.Show()
647            dialog.Raise()
648    
649        def LayerEditProperties(self):
650    
651            #
652            # the menu option for this should only be available if there
653            # is a current layer, so we don't need to check if the
654            # current layer is None
655            #
656    
657            layer = self.current_layer()
658            self.OpenLayerProperties(layer)
659    
660        def OpenLayerProperties(self, layer, group = None):
661            name = "layer_properties" + str(id(layer))
662            dialog = self.get_open_dialog(name)
663    
664            if dialog is None:
665                dialog = Classifier(self, name, self.Map(), layer, group)
666                self.add_dialog(name, dialog)
667                dialog.Show()
668            dialog.Raise()
669    
670        def LayerJoinTable(self):
671            layer = self.canvas.SelectedLayer()
672            if layer is not None:
673                dlg = JoinDialog(self, _("Join Layer with Table"),
674                                 self.application.session,
675                                 layer = layer)
676                dlg.ShowModal()
677    
678        def LayerUnjoinTable(self):
679            layer = self.canvas.SelectedLayer()
680            if layer is not None:
681                orig_store = layer.ShapeStore().OrigShapeStore()
682                if orig_store:
683                    layer.SetShapeStore(orig_store)
684    
685        def ShowLegend(self):
686            if not self.LegendShown():
687                self.ToggleLegend()
688    
689        def ToggleLegend(self):
690            """Show the legend if it's not shown otherwise hide it again"""
691            name = "legend"
692            dialog = self.FindRegisteredDock(name)
693    
694            if dialog is None:
695                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
696                legend.LegendPanel(dialog, None, self)
697                dialog.Dock()
698                dialog.GetPanel().SetMap(self.Map())
699                dialog.Show()
700            else:
701                dialog.Show(not dialog.IsShown())
702    
703        def LegendShown(self):
704            """Return true iff the legend is currently open"""
705            dialog = self.FindRegisteredDock("legend")
706            return dialog is not None and dialog.IsShown()
707    
708        def TableOpen(self):
709            dlg = wxFileDialog(self, _("Open Table"), ".", "",
710                               _("DBF Files (*.dbf)") + "|*.dbf|" +
711                               #_("CSV Files (*.csv)") + "|*.csv|" +
712                               _("All Files (*.*)") + "|*.*",
713                               wxOPEN)
714            if dlg.ShowModal() == wxID_OK:
715                filename = dlg.GetPath()
716                dlg.Destroy()
717                try:
718                    table = self.application.session.OpenTableFile(filename)
719                except IOError:
720                    # the layer couldn't be opened
721                    self.RunMessageBox(_("Open Table"),
722                                       _("Can't open the file '%s'.") % filename)
723              else:              else:
724                  proj = None                  self.ShowTableView(table)
725              map.SetProjection(proj)  
726          proj4Dlg.Destroy()      def TableClose(self):
727            tables = self.application.session.UnreferencedTables()
728    
729            lst = [(t.Title(), t) for t in tables]
730            lst.sort()
731            titles = [i[0] for i in lst]
732            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
733                                         _("Close Table"), titles,
734                                         size = (400, 300),
735                                         style = wxDEFAULT_DIALOG_STYLE |
736                                                 wxRESIZE_BORDER)
737            if dlg.ShowModal() == wxID_OK:
738                for i in dlg.GetValue():
739                    self.application.session.RemoveTable(lst[i][1])
740    
741    
742        def TableShow(self):
743            """Offer a multi-selection dialog for tables to be displayed
744    
745            The windows for the selected tables are opened or brought to
746            the front.
747            """
748            tables = self.application.session.Tables()
749    
750            lst = [(t.Title(), t) for t in tables]
751            lst.sort()
752            titles = [i[0] for i in lst]
753            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
754                                         _("Show Table"), titles,
755                                         size = (400,300),
756                                         style = wxDEFAULT_DIALOG_STYLE |
757                                                 wxRESIZE_BORDER)
758            if (dlg.ShowModal() == wxID_OK):
759                for i in dlg.GetValue():
760                    # XXX: if the table belongs to a layer, open a
761                    # LayerTableFrame instead of QueryTableFrame
762                    self.ShowTableView(lst[i][1])
763    
764        def TableJoin(self):
765            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
766            dlg.ShowModal()
767    
768        def ShowTableView(self, table):
769            """Open a table view for the table and optionally"""
770            name = "table_view%d" % id(table)
771            dialog = self.get_open_dialog(name)
772            if dialog is None:
773                dialog = tableview.QueryTableFrame(self, name,
774                                                   _("Table: %s") % table.Title(),
775                                                   table)
776                self.add_dialog(name, dialog)
777                dialog.Show(True)
778            dialog.Raise()
779    
780        def TableRename(self):
781            """Let the user rename a table"""
782    
783            # First, let the user select a table
784            tables = self.application.session.Tables()
785            lst = [(t.Title(), t) for t in tables]
786            lst.sort()
787            titles = [i[0] for i in lst]
788            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
789                                         _("Rename Table"), titles,
790                                         size = (400,300),
791                                         style = wxDEFAULT_DIALOG_STYLE |
792                                                 wxRESIZE_BORDER)
793            if (dlg.ShowModal() == wxID_OK):
794                to_rename = [lst[i][1] for i in dlg.GetValue()]
795                dlg.Destroy()
796            else:
797                to_rename = []
798    
799            # Second, let the user rename the layers
800            for table in to_rename:
801                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
802                                        table.Title())
803                try:
804                    if dlg.ShowModal() == wxID_OK:
805                        title = dlg.GetValue()
806                        if title != "":
807                            table.SetTitle(title)
808    
809                            # Make sure the session is marked as modified.
810                            # FIXME: This should be handled automatically,
811                            # but that requires more changes to the tables
812                            # than I have time for currently.
813                            self.application.session.changed()
814                finally:
815                    dlg.Destroy()
816    
817    
818      def ZoomInTool(self):      def ZoomInTool(self):
819          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 480  class MainWindow(wxFrame): Line 834  class MainWindow(wxFrame):
834      def FullExtent(self):      def FullExtent(self):
835          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
836    
837        def FullLayerExtent(self):
838            self.canvas.FitLayerToWindow(self.current_layer())
839    
840        def FullSelectionExtent(self):
841            self.canvas.FitSelectedToWindow()
842    
843        def ExportMap(self):
844            self.canvas.Export()
845    
846      def PrintMap(self):      def PrintMap(self):
847          self.canvas.Print()          self.canvas.Print()
848    
849      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
850            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
851                                    self.Map().Title())
852            if dlg.ShowModal() == wxID_OK:
853                title = dlg.GetValue()
854                if title != "":
855                    self.Map().SetTitle(title)
856                    self.__SetTitle(title)
857    
858            dlg.Destroy()
859    
860        def RenameLayer(self):
861            """Let the user rename the currently selected layer"""
862            layer = self.current_layer()
863            if layer is not None:
864                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
865                                        layer.Title())
866                try:
867                    if dlg.ShowModal() == wxID_OK:
868                        title = dlg.GetValue()
869                        if title != "":
870                            layer.SetTitle(title)
871                finally:
872                    dlg.Destroy()
873    
874        def identify_view_on_demand(self, layer, shapes):
875            """Subscribed to the canvas' SHAPES_SELECTED message
876    
877            If the current tool is the identify tool, at least one shape is
878            selected and the identify dialog is not shown, show the dialog.
879            """
880            # If the selection has become empty we don't need to do
881            # anything. Otherwise it could happen that the dialog was popped
882            # up when the selection became empty, e.g. when a new selection
883            # is opened while the identify tool is active and dialog had
884            # been closed
885            if not shapes:
886                return
887    
888          name = "identify_view"          name = "identify_view"
889          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
890              if not self.dialog_open(name):              if not self.dialog_open(name):
891                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
892                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
893                  dialog.Show(true)                  dialog.Show(True)
894              else:              else:
895                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
896                  pass                  pass
897    
898        def __SetTitle(self, title):
899            self.SetTitle("Thuban - " + title)
900    
901  #  #
902  # Define all the commands available in the main window  # Define all the commands available in the main window
903  #  #
# Line 505  def call_method(context, methodname, *ar Line 909  def call_method(context, methodname, *ar
909      apply(getattr(context.mainwindow, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
910    
911  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
912                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
913      """Add a command implemented by a method of the mainwindow object"""      """Add a command implemented by a method of the mainwindow object"""
914      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
915                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
916                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
917    
918  def make_check_current_tool(toolname):  def make_check_current_tool(toolname):
919      """Return a function that tests if the currently active tool is toolname      """Return a function that tests if the currently active tool is toolname
# Line 523  def make_check_current_tool(toolname): Line 927  def make_check_current_tool(toolname):
927      return check_current_tool      return check_current_tool
928    
929  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
930                    icon = ""):                    icon = "", sensitive = None):
931      """Add a tool command"""      """Add a tool command"""
932      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(ToolCommand(name, title, call_method, args=(method,),
933                           helptext = helptext, icon = icon,                               helptext = helptext, icon = icon,
934                           checked = make_check_current_tool(toolname)))                               checked = make_check_current_tool(toolname),
935                                 sensitive = sensitive))
936    
937  def _has_selected_layer(context):  def _has_selected_layer(context):
938      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
939      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
940    
941    def _has_selected_shapes(context):
942        """Return true if a layer is selected in the context"""
943        return context.mainwindow.has_selected_shapes()
944    
945    def _can_remove_layer(context):
946        return context.mainwindow.CanRemoveLayer()
947    
948  def _has_tree_window_shown(context):  def _has_tree_window_shown(context):
949      """Return true if the tree window is shown"""      """Return true if the tree window is shown"""
950      return context.mainwindow.get_open_dialog("session_tree") is None      return context.mainwindow.SessionTreeShown()
951    
952    def _has_visible_map(context):
953        """Return true iff theres a visible map in the mainwindow.
954    
955        A visible map is a map with at least one visible layer."""
956        map = context.mainwindow.Map()
957        if map is not None:
958            for layer in map.Layers():
959                if layer.Visible():
960                    return 1
961        return 0
962    
963    def _has_legend_shown(context):
964        """Return true if the legend window is shown"""
965        return context.mainwindow.LegendShown()
966    
967    def _has_gdal_support(context):
968        """Return True if the GDAL is available"""
969        return Thuban.Model.resource.has_gdal_support()
970    
971    def _has_dbconnections(context):
972        """Return whether the the session has database connections"""
973        return context.session.HasDBConnections()
974    
975  # File menu  # File menu
976  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
977  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
978  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
979  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
980  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",  _method_command("save_session", _("&Save Session"), "SaveSession",
981                  sensitive = _has_tree_window_shown)                  helptext =_("Save this session to the file it was opened from"))
982  _method_command("exit", "&Exit", "Exit")  _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
983                    helptext = _("Save this session to a new file"))
984    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
985                    checked = _has_tree_window_shown,
986                    helptext = _("Toggle on/off the session tree analysis window"))
987    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
988                    checked = _has_legend_shown,
989                    helptext = _("Toggle Legend on/off"))
990    _method_command("database_management", _("&Database Connections..."),
991                    "DatabaseManagement")
992    _method_command("exit", _("E&xit"), "Exit",
993                    helptext = _("Finish working with Thuban"))
994    
995  # Help menu  # Help menu
996  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
997                    helptext = _("Info about Thuban authors, version and modules"))
998    
999    
1000  # Map menu  # Map menu
1001  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1002                    helptext = _("Set or change the map projection"))
1003    
1004  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1005                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1006  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1007                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1008  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1009                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1010  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1011                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1012  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1013                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1014  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
1015                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1016  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
1017    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1018                  helptext = _("Add/Remove labels"), icon = "label",
1019                  sensitive = _has_visible_map)
1020    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1021                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1022                  sensitive = _has_visible_map)
1023    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1024                    helptext = _("Zoom to the full layer extent"),
1025                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1026    _method_command("selected_full_extent", _("&Full selection extent"),
1027                    "FullSelectionExtent",
1028                    helptext = _("Zoom to the full selection extent"),
1029                    icon = "fullselextent", sensitive = _has_selected_shapes)
1030    _method_command("map_export", _("E&xport"), "ExportMap",
1031                    helptext = _("Export the map to file"))
1032    _method_command("map_print", _("Prin&t"), "PrintMap",
1033                    helptext = _("Print the map"))
1034    _method_command("map_rename", _("&Rename..."), "RenameMap",
1035                    helptext = _("Rename the map"))
1036    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1037                    helptext = _("Add a new layer to the map"))
1038    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1039                    helptext = _("Add a new image layer to the map"),
1040                    sensitive = _has_gdal_support)
1041    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1042                    helptext = _("Add a new database layer to active map"),
1043                    sensitive = _has_dbconnections)
1044    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1045                    helptext = _("Remove selected layer"),
1046                    sensitive = _can_remove_layer)
1047    
1048  # Layer menu  # Layer menu
1049  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1050                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1051  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1052                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1053                    helptext = _("Duplicate selected layer"),
1054              sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1055    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1056                    helptext = _("Rename selected layer"),
1057                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1058  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1059                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Raise selected layer"),
1060                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1061  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1062                  "LayerTransparentFill",                  helptext = _("Lower selected layer"),
                 helptext = "Do not fill the selected layer(s)",  
1063                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1064  _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_show", _("&Show"), "ShowLayer",
1065                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Make selected layer visible"),
1066                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1067  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1068                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer unvisible"),
1069                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1070  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1071                  helptext = "Raise selected layer(s)",                  helptext = _("Show the selected layer's table"),
                 sensitive = _has_selected_layer)  
 _method_command("layer_lower", "&Lower", "LowerLayer",  
                 helptext = "Lower selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_show", "&Show", "ShowLayer",  
                 helptext = "Make selected layer(s) visible",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_hide", "&Hide", "HideLayer",  
                 helptext = "Make selected layer(s) unvisible",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  
                 helptext = "Show the selected layer's table",  
1072                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1073    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1074                    sensitive = _has_selected_layer,
1075                    helptext = _("Edit the properties of the selected layer"))
1076    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1077                    sensitive = _has_selected_layer,
1078                    helptext = _("Join and attach a table to the selected layer"))
1079    
1080    def _can_unjoin(context):
1081        """Return whether the Layer/Unjoin command can be executed.
1082    
1083  # the menu structure      This is the case if a layer is selected and that layer has a
1084  main_menu = Menu("<main>", "<main>",      shapestore that has an original shapestore.
1085                   [Menu("file", "&File",      """
1086                         ["new_session", "open_session", None,      layer = context.mainwindow.SelectedLayer()
1087                          "save_session", "save_session_as", None,      if layer is None:
1088                          "show_session_tree", None,          return 0
1089                          "exit"]),      getstore = getattr(layer, "ShapeStore", None)
1090                    Menu("map", "&Map",      if getstore is not None:
1091                         ["layer_add", "layer_remove",          return getstore().OrigShapeStore() is not None
1092        else:
1093            return 0
1094    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1095                    sensitive = _can_unjoin,
1096                    helptext = _("Undo the last join operation"))
1097    
1098    
1099    def _has_tables(context):
1100        return bool(context.session.Tables())
1101    
1102    # Table menu
1103    _method_command("table_open", _("&Open..."), "TableOpen",
1104                    helptext = _("Open a DBF-table from a file"))
1105    _method_command("table_close", _("&Close..."), "TableClose",
1106           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1107                    helptext = _("Close one or more tables from a list"))
1108    _method_command("table_rename", _("&Rename..."), "TableRename",
1109                    sensitive = _has_tables,
1110                    helptext = _("Rename one or more tables"))
1111    _method_command("table_show", _("&Show..."), "TableShow",
1112                    sensitive = _has_tables,
1113                    helptext = _("Show one or more tables in a dialog"))
1114    _method_command("table_join", _("&Join..."), "TableJoin",
1115                    sensitive = _has_tables,
1116                    helptext = _("Join two tables creating a new one"))
1117    
1118    #  Export only under Windows ...
1119    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1120                          None,                          None,
1121                            "map_rename",
1122                          "map_projection",                          "map_projection",
1123                          None,                          None,
1124                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1125                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
                         None,  
1126                          "map_full_extent",                          "map_full_extent",
1127                            "layer_full_extent",
1128                            "selected_full_extent",
1129                          None,                          None,
1130                          "map_print"]),                          "map_identify_tool", "map_label_tool",
1131                    Menu("layer", "&Layer",                          None,
1132                         ["layer_fill_color", "layer_transparent_fill",                          "toggle_legend",
1133                          "layer_outline_color", "layer_no_outline",                          None]
1134    if wxPlatform == '__WXMSW__':
1135        map_menu.append("map_export")
1136    map_menu.append("map_print")
1137    
1138    # the menu structure
1139    main_menu = Menu("<main>", "<main>",
1140                     [Menu("file", _("&File"),
1141                           ["new_session", "open_session", None,
1142                            "save_session", "save_session_as", None,
1143                            "database_management", None,
1144                            "toggle_session_tree", None,
1145                            "exit"]),
1146                      Menu("map", _("&Map"), map_menu),
1147                      Menu("layer", _("&Layer"),
1148                           ["layer_rename", "layer_duplicate",
1149                          None,                          None,
1150                          "layer_raise", "layer_lower",                          "layer_raise", "layer_lower",
1151                          None,                          None,
1152                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1153                          None,                          None,
1154                          "layer_show_table"]),                          "layer_projection",
1155                    Menu("help", "&Help",                          None,
1156                            "layer_show_table",
1157                            "layer_jointable",
1158                            "layer_unjointable",
1159                            None,
1160                            "layer_properties"]),
1161                      Menu("table", _("&Table"),
1162                           ["table_open", "table_close", "table_rename",
1163                           None,
1164                           "table_show",
1165                           None,
1166                           "table_join"]),
1167                      Menu("help", _("&Help"),
1168                         ["help_about"])])                         ["help_about"])])
1169    
1170  # the main toolbar  # the main toolbar
1171    
1172  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
1173                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1174                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent",
1175                         "layer_full_extent",
1176                         "selected_full_extent",
1177                         None,
1178                         "map_identify_tool", "map_label_tool"])
1179    
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