/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 193 by bh, Wed May 29 10:33:41 2002 UTC revision 2184 by jan, Fri Apr 16 08:21:12 2004 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003, 2004 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
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 11  The main window Line 12  The main window
12  """  """
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    # $Source$
16    # $Id$
17    
18  import os  import os
19    import copy
20    
21  from wxPython.wx import *  from wxPython.wx import *
22    
23  import Thuban  import Thuban
24    
25    from Thuban import _
26    from Thuban.Model.messages import TITLE_CHANGED
27  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
28  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
29  from Thuban.Model.color import Color  from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
30  from Thuban.Model.proj import Projection  # XXX: replace this by
31    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
32    # when Thuban does not support wxPython 2.4.0 any more.
33    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
34    
35  import view  import view
36  import tree  import tree
 import proj4dialog  
37  import tableview, identifyview  import tableview, identifyview
38    from Thuban.UI.classifier import Classifier
39    import legend
40  from menu import Menu  from menu import Menu
41    
42  import main  from context import Context
43  from command import registry, Command  from command import registry, Command, ToolCommand
44  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
45         MAP_REPLACED
46    from about import About
47  # the directory where the toolbar icons are stored  
48  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  from Thuban.UI.dock import DockFrame
49  bitmapext = ".xpm"  from Thuban.UI.join import JoinDialog
50    from Thuban.UI.dbdialog import DBFrame, DBDialog, ChooseDBTableDialog
51    import resource
52    import Thuban.Model.resource
53    
54    import projdialog
55    
56    
57    class MainWindow(DockFrame):
58    
59        # Some messages that can be subscribed/unsubscribed directly through
60        # the MapCanvas come in fact from other objects. This is a map to
61        # map those messages to the names of the instance variables they
62        # actually come from. This delegation is implemented in the
63        # Subscribe and unsubscribed methods
64        delegated_messages = {LAYER_SELECTED: "canvas",
65                              SHAPES_SELECTED: "canvas",
66                              MAP_REPLACED: "canvas"}
67    
68        # Methods delegated to some instance variables. The delegation is
69        # implemented in the __getattr__ method.
70        delegated_methods = {"SelectLayer": "canvas",
71                             "SelectShapes": "canvas",
72                             "SelectedLayer": "canvas",
73                             "SelectedShapes": "canvas",
74                             }
75    
76        def __init__(self, parent, ID, title, application, interactor,
77                     initial_message = None, size = wxSize(-1, -1)):
78            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
79            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
80    
81  class MainWindow(wxFrame):          self.application = application
   
     def __init__(self, parent, ID, interactor):  
         wxFrame.__init__(self, parent, ID, 'Thuban',  
                          wxDefaultPosition, wxSize(400, 300))  
   
         self.interactor = interactor  
82    
83          self.CreateStatusBar()          self.CreateStatusBar()
84          self.SetStatusText("This is the wxPython-based "          if initial_message:
85                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
86    
87          self.identify_view = None          self.identify_view = None
88    
# Line 62  class MainWindow(wxFrame): Line 96  class MainWindow(wxFrame):
96          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
97          toolbar.Realize()          toolbar.Realize()
98    
99    
100          # Create the map canvas          # Create the map canvas
101          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
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)
104          self.canvas = canvas          self.canvas = canvas
105            self.canvas.Subscribe(TITLE_CHANGED, self.title_changed)
106    
107            self.SetMainWindow(self.canvas)
108    
109            self.SetAutoLayout(True)
110    
111          self.init_dialogs()          self.init_dialogs()
112    
113          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
114    
115          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
116    
117        def Subscribe(self, channel, *args):
118            """Subscribe a function to a message channel.
119    
120            If channel is one of the delegated messages call the appropriate
121            object's Subscribe method. Otherwise do nothing.
122            """
123            if channel in self.delegated_messages:
124                object = getattr(self, self.delegated_messages[channel])
125                object.Subscribe(channel, *args)
126            else:
127                print "Trying to subscribe to unsupported channel %s" % channel
128    
129        def Unsubscribe(self, channel, *args):
130            """Unsubscribe a function from a message channel.
131    
132            If channel is one of the delegated messages call the appropriate
133            object's Unsubscribe method. Otherwise do nothing.
134            """
135            if channel in self.delegated_messages:
136                object = getattr(self, self.delegated_messages[channel])
137                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):
147            """If attr is one of the delegated methods return that method
148    
149            Otherwise raise AttributeError.
150            """
151            if attr in self.delegated_methods:
152                return getattr(getattr(self, self.delegated_methods[attr]), attr)
153            raise AttributeError(attr)
154    
155      def init_ids(self):      def init_ids(self):
156          """Initialize the ids"""          """Initialize the ids"""
157          self.current_id = 6000          self.current_id = 6000
# Line 111  class MainWindow(wxFrame): Line 190  class MainWindow(wxFrame):
190          return menu_bar          return menu_bar
191    
192      def build_menu(self, menudesc):      def build_menu(self, menudesc):
193          """Build and return a wxMenu from a menudescription"""          """Return a wxMenu built from the menu description menudesc"""
194          wxmenu = wxMenu()          wxmenu = wxMenu()
195          last = None          last = None
196          for item in menudesc.items:          for item in menudesc.items:
             # here the items must all be Menu instances themselves  
197              if item is None:              if item is None:
198                  # a separator. Only add one if the last item was not a                  # a separator. Only add one if the last item was not a
199                  # separator                  # separator
# Line 168  class MainWindow(wxFrame): Line 246  class MainWindow(wxFrame):
246                              command.IsCheckCommand())                              command.IsCheckCommand())
247                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
248              else:              else:
249                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
250    
251      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
252          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 183  class MainWindow(wxFrame): Line 261  class MainWindow(wxFrame):
261              command = registry.Command(name)              command = registry.Command(name)
262              if command is not None:              if command is not None:
263                  ID = self.get_id(name)                  ID = self.get_id(name)
264                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
265                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
266                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
267                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
268                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
269                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
270              else:              else:
271                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
272    
273        def Context(self):
274            """Return the context object for a command invoked from this window
275            """
276            return Context(self.application, self.application.Session(), self)
277    
278      def invoke_command(self, event):      def invoke_command(self, event):
279          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
280          if name is not None:          if name is not None:
281              command = registry.Command(name)              command = registry.Command(name)
282              command.Execute(self)              command.Execute(self.Context())
283          else:          else:
284              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
285    
286      def update_command_ui(self, event):      def update_command_ui(self, event):
287          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
288            context = self.Context()
289          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
290          if command is not None:          if command is not None:
291              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
292              event.SetText(command.DynText(self))              event.Enable(sensitive)
293                if command.IsTool() and not sensitive and command.Checked(context):
294                    # When a checked tool command is disabled deselect all
295                    # tools. Otherwise the tool would remain active but it
296                    # might lead to errors if the tools stays active. This
297                    # problem occurred in GREAT-ER and this fixes it, but
298                    # it's not clear to me whether this is really the best
299                    # way to do it (BH, 20021206).
300                    self.canvas.SelectTool(None)
301                event.SetText(command.DynText(context))
302              if command.IsCheckCommand():              if command.IsCheckCommand():
303                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
304    
305      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
306          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
307          and return the result"""          and return the result"""
308          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
309            dlg.CenterOnParent()
310          result = dlg.ShowModal()          result = dlg.ShowModal()
311          dlg.Destroy()          dlg.Destroy()
312          return result          return result
# Line 226  class MainWindow(wxFrame): Line 320  class MainWindow(wxFrame):
320    
321      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
322          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
323              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
324          self.dialogs[name] = dialog          self.dialogs[name] = dialog
325    
326      def dialog_open(self, name):      def dialog_open(self, name):
# Line 244  class MainWindow(wxFrame): Line 338  class MainWindow(wxFrame):
338              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
339          else:          else:
340              text = ""              text = ""
341            self.set_position_text(text)
342    
343        def set_position_text(self, text):
344            """Set the statusbar text showing the current position.
345    
346            By default the text is shown in field 0 of the status bar.
347            Override this method in derived classes to put it into a
348            different field of the statusbar.
349            """
350          self.SetStatusText(text)          self.SetStatusText(text)
351    
352      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
# Line 255  class MainWindow(wxFrame): Line 358  class MainWindow(wxFrame):
358          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
359          a cancel button, otherwise not.          a cancel button, otherwise not.
360          """          """
361          if main.app.session.WasModified():          if self.application.session.WasModified():
362              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
363              if can_veto:              if can_veto:
364                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
365              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
366                                          ("The session has been modified."                                          _("The session has been modified."
367                                           " Do you want to save it?"),                                           " Do you want to save it?"),
368                                          flags)                                          flags)
369              if result == wxID_YES:              if result == wxID_YES:
# Line 270  class MainWindow(wxFrame): Line 373  class MainWindow(wxFrame):
373          return result          return result
374    
375      def NewSession(self):      def NewSession(self):
376          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
377          main.app.SetSession(create_empty_session())              self.application.SetSession(create_empty_session())
378    
379      def OpenSession(self):      def OpenSession(self):
380          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
381          dlg = wxFileDialog(self, "Select a session file", ".", "",              dlg = wxFileDialog(self, _("Open Session"),
382                             "*.thuban", wxOPEN)                                 self.application.Path("data"), "",
383          if dlg.ShowModal() == wxID_OK:                                 "Thuban Session File (*.thuban)|*.thuban",
384              main.app.OpenSession(dlg.GetPath())                                 wxOPEN)
385          dlg.Destroy()              if dlg.ShowModal() == wxID_OK:
386                    self.application.OpenSession(dlg.GetPath(),
387                                                 self.run_db_param_dialog)
388                    self.application.SetPath("data", dlg.GetPath())
389                dlg.Destroy()
390    
391        def run_db_param_dialog(self, parameters, message):
392            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
393                           message)
394            return dlg.RunDialog()
395    
396      def SaveSession(self):      def SaveSession(self):
397          if main.app.session.filename == None:          if self.application.session.filename == None:
398              self.SaveSessionAs()              self.SaveSessionAs()
399          main.app.SaveSession()          else:
400                self.application.SaveSession()
401    
402      def SaveSessionAs(self):      def SaveSessionAs(self):
403          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
404                             "*.thuban", wxOPEN)                             self.application.Path("data"), "",
405                               "Thuban Session File (*.thuban)|*.thuban",
406                               wxSAVE|wxOVERWRITE_PROMPT)
407          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
408              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
409              main.app.SaveSession()              self.application.SaveSession()
410                self.application.SetPath("data",dlg.GetPath())
411          dlg.Destroy()          dlg.Destroy()
412    
413      def Exit(self):      def Exit(self):
414          self.Close(false)          self.Close(False)
415    
416      def OnClose(self, event):      def OnClose(self, event):
417          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
418          if result == wxID_CANCEL:          if result == wxID_CANCEL:
419              event.Veto()              event.Veto()
420          else:          else:
421                # FIXME: it would be better to tie the unsubscription to
422                # wx's destroy event, but that isn't implemented for wxGTK
423                # yet.
424                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
425                DockFrame.OnClose(self, event)
426                for dlg in self.dialogs.values():
427                    dlg.Destroy()
428                self.canvas.Destroy()
429              self.Destroy()              self.Destroy()
430    
431      def SetMap(self, map):      def SetMap(self, map):
432          self.canvas.SetMap(map)          self.canvas.SetMap(map)
433            self.update_title()
434    
435            dialog = self.FindRegisteredDock("legend")
436            if dialog is not None:
437                dialog.GetPanel().SetMap(self.Map())
438    
439      def ShowSessionTree(self):      def Map(self):
440            """Return the map displayed by this mainwindow"""
441    
442            return self.canvas.Map()
443    
444        def ToggleSessionTree(self):
445            """If the session tree is shown close it otherwise create a new tree"""
446          name = "session_tree"          name = "session_tree"
447          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
448          if dialog is None:          if dialog is None:
449              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
450              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
451              dialog.Show(true)              dialog.Show(True)
452          else:          else:
453              # FIXME: bring dialog to front here              dialog.Close()
454              pass  
455        def SessionTreeShown(self):
456            """Return true iff the session tree is currently shown"""
457            return self.get_open_dialog("session_tree") is not None
458    
459      def About(self):      def About(self):
460          self.RunMessageBox("About",          dlg = About(self)
461                             ("Thuban is a program for\n"          dlg.ShowModal()
462                              "exploring geographic data.\n"          dlg.Destroy()
463                              "Copyright (C) 2001 Intevation GmbH.\n"  
464                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
465                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
466            dialog = self.get_open_dialog(name)
467            if dialog is None:
468                map = self.canvas.Map()
469                dialog = DBFrame(self, name, self.application.Session())
470                self.add_dialog(name, dialog)
471                dialog.Show()
472            dialog.Raise()
473    
474      def AddLayer(self):      def AddLayer(self):
475          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
476                               self.application.Path("data"), "",
477                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
478                               _("All Files (*.*)") + "|*.*",
479                               wxOPEN | wxMULTIPLE)
480            if dlg.ShowModal() == wxID_OK:
481                filenames = dlg.GetPaths()
482                for filename in filenames:
483                    title = os.path.splitext(os.path.basename(filename))[0]
484                    map = self.canvas.Map()
485                    has_layers = map.HasLayers()
486                    try:
487                        store = self.application.Session().OpenShapefile(filename)
488                    except IOError:
489                        # the layer couldn't be opened
490                        self.RunMessageBox(_("Add Layer"),
491                                           _("Can't open the file '%s'.")%filename)
492                    else:
493                        layer = Layer(title, store)
494                        map.AddLayer(layer)
495                        if not has_layers:
496                            # if we're adding a layer to an empty map, fit the
497                            # new map to the window
498                            self.canvas.FitMapToWindow()
499                        self.application.SetPath("data",filename)
500            dlg.Destroy()
501    
502        def AddRasterLayer(self):
503            dlg = wxFileDialog(self, _("Select an image file"),
504                               self.application.Path("data"), "", "*.*",
505                             wxOPEN)                             wxOPEN)
506          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
507              filename = dlg.GetPath()              filename = dlg.GetPath()
508              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
509              map = self.canvas.Map()              map = self.canvas.Map()
510              has_layers = map.HasLayers()              has_layers = map.HasLayers()
511              try:              try:
512                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
513              except IOError:              except IOError:
514                  # the layer couldn't be opened                  # the layer couldn't be opened
515                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
516                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
517              else:              else:
518                    map.AddLayer(layer)
519                  if not has_layers:                  if not has_layers:
520                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
521                      # new map to the window                      # new map to the window
522                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
523                    self.application.SetPath("data", filename)
524            dlg.Destroy()
525    
526        def AddDBLayer(self):
527            """Add a layer read from a database"""
528            session = self.application.Session()
529            dlg = ChooseDBTableDialog(self, self.application.Session())
530    
531            if dlg.ShowModal() == wxID_OK:
532                dbconn, dbtable, id_column, geo_column = dlg.GetTable()
533                try:
534                    title = str(dbtable)
535    
536                    # Chose the correct Interface for the database type
537                    store = session.OpenDBShapeStore(dbconn, dbtable,
538                                                     id_column = id_column,
539                                                     geometry_column = geo_column)
540                    layer = Layer(title, store)
541                except:
542                    # Some error occured while initializing the layer
543                    self.RunMessageBox(_("Add Layer from database"),
544                                       _("Can't open the database table '%s'")
545                                       % dbtable)
546                    return
547    
548                map = self.canvas.Map()
549    
550                has_layers = map.HasLayers()
551                map.AddLayer(layer)
552                if not has_layers:
553                    self.canvas.FitMapToWindow()
554    
555          dlg.Destroy()          dlg.Destroy()
556    
557      def RemoveLayer(self):      def RemoveLayer(self):
# Line 353  class MainWindow(wxFrame): Line 559  class MainWindow(wxFrame):
559          if layer is not None:          if layer is not None:
560              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
561    
562        def CanRemoveLayer(self):
563            """Return true if the currently selected layer can be deleted.
564    
565            If no layer is selected return False.
566    
567            The return value of this method determines whether the remove
568            layer command is sensitive in menu.
569            """
570            layer = self.current_layer()
571            if layer is not None:
572                return self.canvas.Map().CanRemoveLayer(layer)
573            return False
574    
575      def RaiseLayer(self):      def RaiseLayer(self):
576          layer = self.current_layer()          layer = self.current_layer()
577          if layer is not None:          if layer is not None:
578              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
579            
580      def LowerLayer(self):      def LowerLayer(self):
581          layer = self.current_layer()          layer = self.current_layer()
582          if layer is not None:          if layer is not None:
# Line 368  class MainWindow(wxFrame): Line 587  class MainWindow(wxFrame):
587    
588          If no layer is selected, return None          If no layer is selected, return None
589          """          """
590          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
591    
592      def has_selected_layer(self):      def has_selected_layer(self):
593          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
594          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
   
     def choose_color(self):  
         """Run the color selection dialog and return the selected color.  
   
         If the user cancels, return None.  
         """  
         dlg = wxColourDialog(self)  
         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  
595    
596      def LayerFillColor(self):      def has_selected_shape_layer(self):
597          layer = self.current_layer()          """Return true if a shape layer is currently selected"""
598          if layer is not None:          return isinstance(self.current_layer(), Layer)
599              color = self.choose_color()  
600              if color is not None:      def has_selected_shapes(self):
601                  layer.SetFill(color)          """Return true if a shape is currently selected"""
602            return self.canvas.HasSelectedShapes()
603    
604      def LayerTransparentFill(self):      def HideLayer(self):
605          layer = self.current_layer()          layer = self.current_layer()
606          if layer is not None:          if layer is not None:
607              layer.SetFill(None)              layer.SetVisible(0)
608    
609      def LayerOutlineColor(self):      def ShowLayer(self):
610          layer = self.current_layer()          layer = self.current_layer()
611          if layer is not None:          if layer is not None:
612              color = self.choose_color()              layer.SetVisible(1)
             if color is not None:  
                 layer.SetStroke(color)  
613    
614      def LayerNoOutline(self):      def DuplicateLayer(self):
615            """Ceate a new layer above the selected layer with the same shapestore
616            """
617          layer = self.current_layer()          layer = self.current_layer()
618          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
619              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
620                                  layer.ShapeStore(),
621                                  projection = layer.GetProjection())
622                new_classification = copy.deepcopy(layer.GetClassification())
623                new_layer.SetClassification(new_classification)
624                self.Map().AddLayer(new_layer)
625    
626      def HideLayer(self):      def CanDuplicateLayer(self):
627          layer = self.current_layer()          """Return whether the DuplicateLayer method can create a duplicate"""
         if layer is not None:  
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
628          layer = self.current_layer()          layer = self.current_layer()
629          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(1)  
630    
631      def LayerShowTable(self):      def LayerShowTable(self):
632            """
633            Present a TableView Window for the current layer.
634            In case the window is already open, bring it to the front.
635            In case, there is no active layer, do nothing.
636            In case, the layer has not ShapeStore, raise a corresponding message dialog
637            and do nothing else.
638            """
639          layer = self.current_layer()          layer = self.current_layer()
640          if layer is not None:          if layer is not None:
641              table = layer.table              if not hasattr(layer, "ShapeStore"):
642                    self.RunMessageBox(_("Show Table"),
643                                       _("The layer '%s' has no table." % layer.Title()))
644                    return
645                table = layer.ShapeStore().Table()
646              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
647              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
648              if dialog is None:              if dialog is None:
649                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
650                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
651                                                layer, table)                                           layer, table)
652                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
653                  dialog.Show(true)                  dialog.Show(True)
654              else:              else:
655                  # FIXME: bring dialog to front here                  dialog.Raise()
656                  pass  
657        def MapProjection(self):
658    
659            name = "map_projection"
660            dialog = self.get_open_dialog(name)
661    
662            if dialog is None:
663                map = self.canvas.Map()
664                dialog = projdialog.ProjFrame(self, name,
665                         _("Map Projection: %s") % map.Title(), map)
666                self.add_dialog(name, dialog)
667                dialog.Show()
668            dialog.Raise()
669    
670        def LayerProjection(self):
671    
672            layer = self.current_layer()
673    
674            name = "layer_projection" + str(id(layer))
675            dialog = self.get_open_dialog(name)
676    
677            if dialog is None:
678                map = self.canvas.Map()
679                dialog = projdialog.ProjFrame(self, name,
680                         _("Layer Projection: %s") % layer.Title(), layer)
681                self.add_dialog(name, dialog)
682                dialog.Show()
683            dialog.Raise()
684    
685        def LayerEditProperties(self):
686    
687            #
688            # the menu option for this should only be available if there
689            # is a current layer, so we don't need to check if the
690            # current layer is None
691            #
692    
693      def Projection(self):          layer = self.current_layer()
694          map = self.canvas.Map()          self.OpenLayerProperties(layer)
695          proj = map.projection  
696          if proj is None:      def OpenLayerProperties(self, layer, group = None):
697              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())          name = "layer_properties" + str(id(layer))
698          else:          dialog = self.get_open_dialog(name)
699              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,  
700                                                 map.BoundingBox())          if dialog is None:
701          if proj4Dlg.ShowModal() == wxID_OK:              dialog = Classifier(self, name, self.Map(), layer, group)
702              params = proj4Dlg.GetParams()              self.add_dialog(name, dialog)
703              if params is not None:              dialog.Show()
704                  proj = Projection(params)          dialog.Raise()
705    
706        def LayerJoinTable(self):
707            layer = self.canvas.SelectedLayer()
708            if layer is not None:
709                dlg = JoinDialog(self, _("Join Layer with Table"),
710                                 self.application.session,
711                                 layer = layer)
712                dlg.ShowModal()
713    
714        def LayerUnjoinTable(self):
715            layer = self.canvas.SelectedLayer()
716            if layer is not None:
717                orig_store = layer.ShapeStore().OrigShapeStore()
718                if orig_store:
719                    layer.SetShapeStore(orig_store)
720    
721        def ShowLegend(self):
722            if not self.LegendShown():
723                self.ToggleLegend()
724    
725        def ToggleLegend(self):
726            """Show the legend if it's not shown otherwise hide it again"""
727            name = "legend"
728            dialog = self.FindRegisteredDock(name)
729    
730            if dialog is None:
731                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
732                legend.LegendPanel(dialog, None, self)
733                dialog.Dock()
734                dialog.GetPanel().SetMap(self.Map())
735                dialog.Show()
736            else:
737                dialog.Show(not dialog.IsShown())
738    
739        def LegendShown(self):
740            """Return true iff the legend is currently open"""
741            dialog = self.FindRegisteredDock("legend")
742            return dialog is not None and dialog.IsShown()
743    
744        def TableOpen(self):
745            dlg = wxFileDialog(self, _("Open Table"),
746                               self.application.Path("data"), "",
747                               _("DBF Files (*.dbf)") + "|*.dbf|" +
748                               #_("CSV Files (*.csv)") + "|*.csv|" +
749                               _("All Files (*.*)") + "|*.*",
750                               wxOPEN)
751            if dlg.ShowModal() == wxID_OK:
752                filename = dlg.GetPath()
753                dlg.Destroy()
754                try:
755                    table = self.application.session.OpenTableFile(filename)
756                except IOError:
757                    # the layer couldn't be opened
758                    self.RunMessageBox(_("Open Table"),
759                                       _("Can't open the file '%s'.") % filename)
760              else:              else:
761                  proj = None                  self.ShowTableView(table)
762              map.SetProjection(proj)                  self.application.SetPath("data",filename)
763          proj4Dlg.Destroy()  
764        def TableClose(self):
765            tables = self.application.session.UnreferencedTables()
766    
767            lst = [(t.Title(), t) for t in tables]
768            lst.sort()
769            titles = [i[0] for i in lst]
770            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
771                                         _("Close Table"), titles,
772                                         size = (400, 300),
773                                         style = wxDEFAULT_DIALOG_STYLE |
774                                                 wxRESIZE_BORDER)
775            if dlg.ShowModal() == wxID_OK:
776                for i in dlg.GetValue():
777                    self.application.session.RemoveTable(lst[i][1])
778    
779    
780        def TableShow(self):
781            """Offer a multi-selection dialog for tables to be displayed
782    
783            The windows for the selected tables are opened or brought to
784            the front.
785            """
786            tables = self.application.session.Tables()
787    
788            lst = [(t.Title(), t) for t in tables]
789            lst.sort()
790            titles = [i[0] for i in lst]
791            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
792                                         _("Show Table"), titles,
793                                         size = (400,300),
794                                         style = wxDEFAULT_DIALOG_STYLE |
795                                                 wxRESIZE_BORDER)
796            if (dlg.ShowModal() == wxID_OK):
797                for i in dlg.GetValue():
798                    # XXX: if the table belongs to a layer, open a
799                    # LayerTableFrame instead of QueryTableFrame
800                    self.ShowTableView(lst[i][1])
801    
802        def TableJoin(self):
803            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
804            dlg.ShowModal()
805    
806        def ShowTableView(self, table):
807            """Open a table view for the table and optionally"""
808            name = "table_view%d" % id(table)
809            dialog = self.get_open_dialog(name)
810            if dialog is None:
811                dialog = tableview.QueryTableFrame(self, name,
812                                                   _("Table: %s") % table.Title(),
813                                                   table)
814                self.add_dialog(name, dialog)
815                dialog.Show(True)
816            dialog.Raise()
817    
818        def TableRename(self):
819            """Let the user rename a table"""
820    
821            # First, let the user select a table
822            tables = self.application.session.Tables()
823            lst = [(t.Title(), t) for t in tables]
824            lst.sort()
825            titles = [i[0] for i in lst]
826            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
827                                         _("Rename Table"), titles,
828                                         size = (400,300),
829                                         style = wxDEFAULT_DIALOG_STYLE |
830                                                 wxRESIZE_BORDER)
831            if (dlg.ShowModal() == wxID_OK):
832                to_rename = [lst[i][1] for i in dlg.GetValue()]
833                dlg.Destroy()
834            else:
835                to_rename = []
836    
837            # Second, let the user rename the layers
838            for table in to_rename:
839                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
840                                        table.Title())
841                try:
842                    if dlg.ShowModal() == wxID_OK:
843                        title = dlg.GetValue()
844                        if title != "":
845                            table.SetTitle(title)
846    
847                            # Make sure the session is marked as modified.
848                            # FIXME: This should be handled automatically,
849                            # but that requires more changes to the tables
850                            # than I have time for currently.
851                            self.application.session.changed()
852                finally:
853                    dlg.Destroy()
854    
855    
856      def ZoomInTool(self):      def ZoomInTool(self):
857          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 476  class MainWindow(wxFrame): Line 872  class MainWindow(wxFrame):
872      def FullExtent(self):      def FullExtent(self):
873          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
874    
875        def FullLayerExtent(self):
876            self.canvas.FitLayerToWindow(self.current_layer())
877    
878        def FullSelectionExtent(self):
879            self.canvas.FitSelectedToWindow()
880    
881        def ExportMap(self):
882            self.canvas.Export()
883    
884      def PrintMap(self):      def PrintMap(self):
885          self.canvas.Print()          self.canvas.Print()
886    
887      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
888            dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
889                                    self.Map().Title())
890            if dlg.ShowModal() == wxID_OK:
891                title = dlg.GetValue()
892                if title != "":
893                    self.Map().SetTitle(title)
894    
895            dlg.Destroy()
896    
897        def RenameLayer(self):
898            """Let the user rename the currently selected layer"""
899            layer = self.current_layer()
900            if layer is not None:
901                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
902                                        layer.Title())
903                try:
904                    if dlg.ShowModal() == wxID_OK:
905                        title = dlg.GetValue()
906                        if title != "":
907                            layer.SetTitle(title)
908                finally:
909                    dlg.Destroy()
910    
911        def identify_view_on_demand(self, layer, shapes):
912            """Subscribed to the canvas' SHAPES_SELECTED message
913    
914            If the current tool is the identify tool, at least one shape is
915            selected and the identify dialog is not shown, show the dialog.
916            """
917            # If the selection has become empty we don't need to do
918            # anything. Otherwise it could happen that the dialog was popped
919            # up when the selection became empty, e.g. when a new selection
920            # is opened while the identify tool is active and dialog had
921            # been closed
922            if not shapes:
923                return
924    
925          name = "identify_view"          name = "identify_view"
926          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
927              if not self.dialog_open(name):              if not self.dialog_open(name):
928                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
929                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
930                  dialog.Show(true)                  dialog.Show(True)
931              else:              else:
932                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
933                  pass                  pass
934    
935        def title_changed(self, map):
936            """Subscribed to the canvas' TITLE_CHANGED messages"""
937            self.update_title()
938    
939        def update_title(self):
940            """Update the window's title according to it's current state.
941    
942            In this default implementation the title is 'Thuban - ' followed
943            by the map's title or simply 'Thuban' if there is not map.
944            Derived classes should override this method to get different
945            titles.
946    
947            This method is called automatically by other methods when the
948            title may have to change. For the methods implemented in this
949            class this usually only means that a different map has been set
950            or the current map's title has changed.
951            """
952            map = self.Map()
953            if map is not None:
954                title = _("Thuban - %s") % (map.Title(),)
955            else:
956                title = _("Thuban")
957            self.SetTitle(title)
958    
959    
960  #  #
961  # Define all the commands available in the main window  # Define all the commands available in the main window
962  #  #
# Line 497  class MainWindow(wxFrame): Line 964  class MainWindow(wxFrame):
964    
965  # Helper functions to define common command implementations  # Helper functions to define common command implementations
966  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
967      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
968      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
969    
970  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
971                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
972      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
973      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
974                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
975                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
976    
977    def make_check_current_tool(toolname):
978        """Return a function that tests if the currently active tool is toolname
979    
980        The returned function can be called with the context and returns
981        true iff the currently active tool's name is toolname. It's directly
982        usable as the 'checked' callback of a command.
983        """
984        def check_current_tool(context, name=toolname):
985            return context.mainwindow.canvas.CurrentTool() == name
986        return check_current_tool
987    
988  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
989                    icon = ""):                    icon = "", sensitive = None):
990      """Add a tool command"""      """Add a tool command"""
991      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
992          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
993      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
994                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
995    
996  def _has_selected_layer(context):  def _has_selected_layer(context):
997      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
998      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
999    
1000    def _has_selected_shape_layer(context):
1001        """Return true if a shape layer is selected in the context"""
1002        return context.mainwindow.has_selected_shape_layer()
1003    
1004    def _has_selected_shapes(context):
1005        """Return true if a layer is selected in the context"""
1006        return context.mainwindow.has_selected_shapes()
1007    
1008    def _can_remove_layer(context):
1009        return context.mainwindow.CanRemoveLayer()
1010    
1011    def _has_tree_window_shown(context):
1012        """Return true if the tree window is shown"""
1013        return context.mainwindow.SessionTreeShown()
1014    
1015    def _has_visible_map(context):
1016        """Return true iff theres a visible map in the mainwindow.
1017    
1018        A visible map is a map with at least one visible layer."""
1019        map = context.mainwindow.Map()
1020        if map is not None:
1021            for layer in map.Layers():
1022                if layer.Visible():
1023                    return 1
1024        return 0
1025    
1026    def _has_legend_shown(context):
1027        """Return true if the legend window is shown"""
1028        return context.mainwindow.LegendShown()
1029    
1030    def _has_gdal_support(context):
1031        """Return True if the GDAL is available"""
1032        return Thuban.Model.resource.has_gdal_support()
1033    
1034    def _has_dbconnections(context):
1035        """Return whether the the session has database connections"""
1036        return context.session.HasDBConnections()
1037    
1038    def _has_postgis_support(context):
1039        return has_postgis_support()
1040    
1041    
1042  # File menu  # File menu
1043  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1044  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
1045  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1046  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
1047  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("save_session", _("&Save Session"), "SaveSession",
1048  _method_command("exit", "&Exit", "Exit")                  helptext =_("Save this session to the file it was opened from"))
1049    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1050                    helptext = _("Save this session to a new file"))
1051    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1052                    checked = _has_tree_window_shown,
1053                    helptext = _("Toggle on/off the session tree analysis window"))
1054    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1055                    checked = _has_legend_shown,
1056                    helptext = _("Toggle Legend on/off"))
1057    _method_command("database_management", _("&Database Connections..."),
1058                    "DatabaseManagement",
1059                    sensitive = _has_postgis_support)
1060    _method_command("exit", _("E&xit"), "Exit",
1061                    helptext = _("Finish working with Thuban"))
1062    
1063  # Help menu  # Help menu
1064  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1065                    helptext = _("Info about Thuban authors, version and modules"))
1066    
1067    
1068  # Map menu  # Map menu
1069  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1070                    helptext = _("Set or change the map projection"))
1071    
1072  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1073                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1074  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1075                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1076  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1077                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1078  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1079                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1080  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1081                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1082  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
1083                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1084  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
1085    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1086                  helptext = _("Add/Remove labels"), icon = "label",
1087                  sensitive = _has_visible_map)
1088    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1089                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1090                  sensitive = _has_visible_map)
1091    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1092                    helptext = _("Zoom to the full layer extent"),
1093                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1094    _method_command("selected_full_extent", _("&Full selection extent"),
1095                    "FullSelectionExtent",
1096                    helptext = _("Zoom to the full selection extent"),
1097                    icon = "fullselextent", sensitive = _has_selected_shapes)
1098    _method_command("map_export", _("E&xport"), "ExportMap",
1099                    helptext = _("Export the map to file"))
1100    _method_command("map_print", _("Prin&t"), "PrintMap",
1101                    helptext = _("Print the map"))
1102    _method_command("map_rename", _("&Rename..."), "RenameMap",
1103                    helptext = _("Rename the map"))
1104    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1105                    helptext = _("Add a new layer to the map"))
1106    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1107                    helptext = _("Add a new image layer to the map"),
1108                    sensitive = _has_gdal_support)
1109    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1110                    helptext = _("Add a new database layer to active map"),
1111                    sensitive = _has_dbconnections)
1112    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1113                    helptext = _("Remove selected layer"),
1114                    sensitive = _can_remove_layer)
1115    
1116  # Layer menu  # Layer menu
1117  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1118                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1119  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1120                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1121                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1122  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1123                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1124                  sensitive = _has_selected_layer)                  helptext = _("Rename selected layer"),
 _method_command("layer_transparent_fill", "&Transparent Fill",  
                 "LayerTransparentFill",  
                 helptext = "Do not fill the selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",  
                 helptext = "Set the outline color of selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  
                 helptext = "Do not draw the outline of the selected layer(s)",  
1125                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1126  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1127                  helptext = "Raise selected layer(s)",                  helptext = _("Raise selected layer"),
1128                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1129  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1130                  helptext = "Lower selected layer(s)",                  helptext = _("Lower selected layer"),
1131                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1132  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1133                  helptext = "Make selected layer(s) visible",                  helptext = _("Make selected layer visible"),
1134                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1135  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1136                  helptext = "Make selected layer(s) unvisible",                  helptext = _("Make selected layer unvisible"),
1137                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1138  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1139                  helptext = "Show the selected layer's table",                  helptext = _("Show the selected layer's table"),
1140                  sensitive = _has_selected_layer)                  sensitive = _has_selected_shape_layer)
1141    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1142                    sensitive = _has_selected_layer,
1143                    helptext = _("Edit the properties of the selected layer"))
1144    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1145                    sensitive = _has_selected_shape_layer,
1146                    helptext = _("Join and attach a table to the selected layer"))
1147    
1148    def _can_unjoin(context):
1149        """Return whether the Layer/Unjoin command can be executed.
1150    
1151        This is the case if a layer is selected and that layer has a
1152        shapestore that has an original shapestore.
1153        """
1154        layer = context.mainwindow.SelectedLayer()
1155        if layer is None:
1156            return 0
1157        getstore = getattr(layer, "ShapeStore", None)
1158        if getstore is not None:
1159            return getstore().OrigShapeStore() is not None
1160        else:
1161            return 0
1162    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1163                    sensitive = _can_unjoin,
1164                    helptext = _("Undo the last join operation"))
1165    
1166    
1167    def _has_tables(context):
1168        return bool(context.session.Tables())
1169    
1170    # Table menu
1171    _method_command("table_open", _("&Open..."), "TableOpen",
1172                    helptext = _("Open a DBF-table from a file"))
1173    _method_command("table_close", _("&Close..."), "TableClose",
1174           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1175                    helptext = _("Close one or more tables from a list"))
1176    _method_command("table_rename", _("&Rename..."), "TableRename",
1177                    sensitive = _has_tables,
1178                    helptext = _("Rename one or more tables"))
1179    _method_command("table_show", _("&Show..."), "TableShow",
1180                    sensitive = _has_tables,
1181                    helptext = _("Show one or more tables in a dialog"))
1182    _method_command("table_join", _("&Join..."), "TableJoin",
1183                    sensitive = _has_tables,
1184                    helptext = _("Join two tables creating a new one"))
1185    
1186  # the menu structure  #  Export only under Windows ...
1187  main_menu = Menu("<main>", "<main>",  map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
                  [Menu("file", "&File",  
                        ["new_session", "open_session", None,  
                         "save_session", "save_session_as", None,  
                         "show_session_tree", None,  
                         "exit"]),  
                   Menu("map", "&Map",  
                        ["layer_add", "layer_remove",  
1188                          None,                          None,
1189                            "map_rename",
1190                          "map_projection",                          "map_projection",
1191                          None,                          None,
1192                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1193                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
                         None,  
1194                          "map_full_extent",                          "map_full_extent",
1195                            "layer_full_extent",
1196                            "selected_full_extent",
1197                            None,
1198                            "map_identify_tool", "map_label_tool",
1199                          None,                          None,
1200                          "map_print"]),                          "toggle_legend",
1201                    Menu("layer", "&Layer",                          None]
1202                         ["layer_fill_color", "layer_transparent_fill",  if wxPlatform == '__WXMSW__':
1203                          "layer_outline_color", "layer_no_outline",      map_menu.append("map_export")
1204    map_menu.append("map_print")
1205    
1206    # the menu structure
1207    main_menu = Menu("<main>", "<main>",
1208                     [Menu("file", _("&File"),
1209                           ["new_session", "open_session", None,
1210                            "save_session", "save_session_as", None,
1211                            "database_management", None,
1212                            "toggle_session_tree", None,
1213                            "exit"]),
1214                      Menu("map", _("&Map"), map_menu),
1215                      Menu("layer", _("&Layer"),
1216                           ["layer_rename", "layer_duplicate",
1217                          None,                          None,
1218                          "layer_raise", "layer_lower",                          "layer_raise", "layer_lower",
1219                          None,                          None,
1220                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1221                          None,                          None,
1222                          "layer_show_table"]),                          "layer_projection",
1223                    Menu("help", "&Help",                          None,
1224                            "layer_show_table",
1225                            "layer_jointable",
1226                            "layer_unjointable",
1227                            None,
1228                            "layer_properties"]),
1229                      Menu("table", _("&Table"),
1230                           ["table_open", "table_close", "table_rename",
1231                           None,
1232                           "table_show",
1233                           None,
1234                           "table_join"]),
1235                      Menu("help", _("&Help"),
1236                         ["help_about"])])                         ["help_about"])])
1237    
1238  # the main toolbar  # the main toolbar
1239    
1240  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
1241                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1242                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent",
1243                         "layer_full_extent",
1244                         "selected_full_extent",
1245                         None,
1246                         "map_identify_tool", "map_label_tool"])
1247    
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