/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 222 by bh, Thu Jul 18 13:03:08 2002 UTC revision 2051 by frank, Wed Jan 21 17:09:15 2004 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 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    
 import main  
42  from context import Context  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  class MainWindow(wxFrame):  import Thuban.Model.resource
53    
54      def __init__(self, parent, ID, interactor):  import projdialog
55          wxFrame.__init__(self, parent, ID, 'Thuban',  
56                           wxDefaultPosition, wxSize(400, 300))  
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          self.interactor = interactor          self.application = application
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 63  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 112  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 169  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 184  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(Context(main.app, main.app.Session(), 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 = Context(main.app, main.app.Session(), self)          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(context))              sensitive = command.Sensitive(context)
292                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))              event.SetText(command.DynText(context))
302              if command.IsCheckCommand():              if command.IsCheckCommand():
303                  event.Check(command.Checked(context))                      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 228  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 246  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 257  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 272  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      def ShowSessionTree(self):          dialog = self.FindRegisteredDock("legend")
436            if dialog is not None:
437                dialog.GetPanel().SetMap(self.Map())
438    
439        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 = dlg.GetTable()
533                try:
534                    title = str(dbtable)
535    
536                    # Chose the correct Interface for the database type
537                    store = PostGISShapeStore(dbconn, dbtable)
538                    session.AddShapeStore(store)
539                    layer = Layer(title, store)
540                except:
541                    # Some error occured while initializing the layer
542                    self.RunMessageBox(_("Add Layer from database"),
543                                       _("Can't open the database table '%s'")
544                                       % dbtable)
545    
546                map = self.canvas.Map()
547    
548                has_layers = map.HasLayers()
549                map.AddLayer(layer)
550                if not has_layers:
551                    self.canvas.FitMapToWindow()
552    
553          dlg.Destroy()          dlg.Destroy()
554    
555      def RemoveLayer(self):      def RemoveLayer(self):
# Line 355  class MainWindow(wxFrame): Line 557  class MainWindow(wxFrame):
557          if layer is not None:          if layer is not None:
558              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
559    
560        def CanRemoveLayer(self):
561            """Return true if the currently selected layer can be deleted.
562    
563            If no layer is selected return False.
564    
565            The return value of this method determines whether the remove
566            layer command is sensitive in menu.
567            """
568            layer = self.current_layer()
569            if layer is not None:
570                return self.canvas.Map().CanRemoveLayer(layer)
571            return False
572    
573      def RaiseLayer(self):      def RaiseLayer(self):
574          layer = self.current_layer()          layer = self.current_layer()
575          if layer is not None:          if layer is not None:
# Line 370  class MainWindow(wxFrame): Line 585  class MainWindow(wxFrame):
585    
586          If no layer is selected, return None          If no layer is selected, return None
587          """          """
588          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
589    
590      def has_selected_layer(self):      def has_selected_layer(self):
591          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
592          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  
593    
594      def LayerFillColor(self):      def has_selected_shape_layer(self):
595          layer = self.current_layer()          """Return true if a shape layer is currently selected"""
596          if layer is not None:          return isinstance(self.current_layer(), Layer)
597              color = self.choose_color()  
598              if color is not None:      def has_selected_shapes(self):
599                  layer.SetFill(color)          """Return true if a shape is currently selected"""
600            return self.canvas.HasSelectedShapes()
601    
602      def LayerTransparentFill(self):      def HideLayer(self):
603          layer = self.current_layer()          layer = self.current_layer()
604          if layer is not None:          if layer is not None:
605              layer.SetFill(None)              layer.SetVisible(0)
606    
607      def LayerOutlineColor(self):      def ShowLayer(self):
608          layer = self.current_layer()          layer = self.current_layer()
609          if layer is not None:          if layer is not None:
610              color = self.choose_color()              layer.SetVisible(1)
             if color is not None:  
                 layer.SetStroke(color)  
611    
612      def LayerNoOutline(self):      def DuplicateLayer(self):
613            """Ceate a new layer above the selected layer with the same shapestore
614            """
615          layer = self.current_layer()          layer = self.current_layer()
616          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
617              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
618                                  layer.ShapeStore(),
619                                  projection = layer.GetProjection())
620                new_classification = copy.deepcopy(layer.GetClassification())
621                new_layer.SetClassification(new_classification)
622                self.Map().AddLayer(new_layer)
623    
624      def HideLayer(self):      def CanDuplicateLayer(self):
625          layer = self.current_layer()          """Return whether the DuplicateLayer method can create a duplicate"""
         if layer is not None:  
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
626          layer = self.current_layer()          layer = self.current_layer()
627          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(1)  
628    
629      def LayerShowTable(self):      def LayerShowTable(self):
630          layer = self.current_layer()          layer = self.current_layer()
631          if layer is not None:          if layer is not None:
632              table = layer.table              table = layer.ShapeStore().Table()
633              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
634              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
635              if dialog is None:              if dialog is None:
636                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
637                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
638                                                layer, table)                                           layer, table)
639                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
640                  dialog.Show(true)                  dialog.Show(True)
641              else:              else:
642                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
643                  pass                  pass
644    
645      def Projection(self):      def MapProjection(self):
646          map = self.canvas.Map()  
647          proj = map.projection          name = "map_projection"
648          if proj is None:          dialog = self.get_open_dialog(name)
649              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())  
650          else:          if dialog is None:
651              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              map = self.canvas.Map()
652                                                 map.BoundingBox())              dialog = projdialog.ProjFrame(self, name,
653          if proj4Dlg.ShowModal() == wxID_OK:                       _("Map Projection: %s") % map.Title(), map)
654              params = proj4Dlg.GetParams()              self.add_dialog(name, dialog)
655              if params is not None:              dialog.Show()
656                  proj = Projection(params)          dialog.Raise()
657    
658        def LayerProjection(self):
659    
660            layer = self.current_layer()
661    
662            name = "layer_projection" + str(id(layer))
663            dialog = self.get_open_dialog(name)
664    
665            if dialog is None:
666                map = self.canvas.Map()
667                dialog = projdialog.ProjFrame(self, name,
668                         _("Layer Projection: %s") % layer.Title(), layer)
669                self.add_dialog(name, dialog)
670                dialog.Show()
671            dialog.Raise()
672    
673        def LayerEditProperties(self):
674    
675            #
676            # the menu option for this should only be available if there
677            # is a current layer, so we don't need to check if the
678            # current layer is None
679            #
680    
681            layer = self.current_layer()
682            self.OpenLayerProperties(layer)
683    
684        def OpenLayerProperties(self, layer, group = None):
685            name = "layer_properties" + str(id(layer))
686            dialog = self.get_open_dialog(name)
687    
688            if dialog is None:
689                dialog = Classifier(self, name, self.Map(), layer, group)
690                self.add_dialog(name, dialog)
691                dialog.Show()
692            dialog.Raise()
693    
694        def LayerJoinTable(self):
695            layer = self.canvas.SelectedLayer()
696            if layer is not None:
697                dlg = JoinDialog(self, _("Join Layer with Table"),
698                                 self.application.session,
699                                 layer = layer)
700                dlg.ShowModal()
701    
702        def LayerUnjoinTable(self):
703            layer = self.canvas.SelectedLayer()
704            if layer is not None:
705                orig_store = layer.ShapeStore().OrigShapeStore()
706                if orig_store:
707                    layer.SetShapeStore(orig_store)
708    
709        def ShowLegend(self):
710            if not self.LegendShown():
711                self.ToggleLegend()
712    
713        def ToggleLegend(self):
714            """Show the legend if it's not shown otherwise hide it again"""
715            name = "legend"
716            dialog = self.FindRegisteredDock(name)
717    
718            if dialog is None:
719                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
720                legend.LegendPanel(dialog, None, self)
721                dialog.Dock()
722                dialog.GetPanel().SetMap(self.Map())
723                dialog.Show()
724            else:
725                dialog.Show(not dialog.IsShown())
726    
727        def LegendShown(self):
728            """Return true iff the legend is currently open"""
729            dialog = self.FindRegisteredDock("legend")
730            return dialog is not None and dialog.IsShown()
731    
732        def TableOpen(self):
733            dlg = wxFileDialog(self, _("Open Table"),
734                               self.application.Path("data"), "",
735                               _("DBF Files (*.dbf)") + "|*.dbf|" +
736                               #_("CSV Files (*.csv)") + "|*.csv|" +
737                               _("All Files (*.*)") + "|*.*",
738                               wxOPEN)
739            if dlg.ShowModal() == wxID_OK:
740                filename = dlg.GetPath()
741                dlg.Destroy()
742                try:
743                    table = self.application.session.OpenTableFile(filename)
744                except IOError:
745                    # the layer couldn't be opened
746                    self.RunMessageBox(_("Open Table"),
747                                       _("Can't open the file '%s'.") % filename)
748              else:              else:
749                  proj = None                  self.ShowTableView(table)
750              map.SetProjection(proj)                  self.application.SetPath("data",filename)
751          proj4Dlg.Destroy()  
752        def TableClose(self):
753            tables = self.application.session.UnreferencedTables()
754    
755            lst = [(t.Title(), t) for t in tables]
756            lst.sort()
757            titles = [i[0] for i in lst]
758            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
759                                         _("Close Table"), titles,
760                                         size = (400, 300),
761                                         style = wxDEFAULT_DIALOG_STYLE |
762                                                 wxRESIZE_BORDER)
763            if dlg.ShowModal() == wxID_OK:
764                for i in dlg.GetValue():
765                    self.application.session.RemoveTable(lst[i][1])
766    
767    
768        def TableShow(self):
769            """Offer a multi-selection dialog for tables to be displayed
770    
771            The windows for the selected tables are opened or brought to
772            the front.
773            """
774            tables = self.application.session.Tables()
775    
776            lst = [(t.Title(), t) for t in tables]
777            lst.sort()
778            titles = [i[0] for i in lst]
779            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
780                                         _("Show Table"), titles,
781                                         size = (400,300),
782                                         style = wxDEFAULT_DIALOG_STYLE |
783                                                 wxRESIZE_BORDER)
784            if (dlg.ShowModal() == wxID_OK):
785                for i in dlg.GetValue():
786                    # XXX: if the table belongs to a layer, open a
787                    # LayerTableFrame instead of QueryTableFrame
788                    self.ShowTableView(lst[i][1])
789    
790        def TableJoin(self):
791            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
792            dlg.ShowModal()
793    
794        def ShowTableView(self, table):
795            """Open a table view for the table and optionally"""
796            name = "table_view%d" % id(table)
797            dialog = self.get_open_dialog(name)
798            if dialog is None:
799                dialog = tableview.QueryTableFrame(self, name,
800                                                   _("Table: %s") % table.Title(),
801                                                   table)
802                self.add_dialog(name, dialog)
803                dialog.Show(True)
804            dialog.Raise()
805    
806        def TableRename(self):
807            """Let the user rename a table"""
808    
809            # First, let the user select a table
810            tables = self.application.session.Tables()
811            lst = [(t.Title(), t) for t in tables]
812            lst.sort()
813            titles = [i[0] for i in lst]
814            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
815                                         _("Rename Table"), titles,
816                                         size = (400,300),
817                                         style = wxDEFAULT_DIALOG_STYLE |
818                                                 wxRESIZE_BORDER)
819            if (dlg.ShowModal() == wxID_OK):
820                to_rename = [lst[i][1] for i in dlg.GetValue()]
821                dlg.Destroy()
822            else:
823                to_rename = []
824    
825            # Second, let the user rename the layers
826            for table in to_rename:
827                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
828                                        table.Title())
829                try:
830                    if dlg.ShowModal() == wxID_OK:
831                        title = dlg.GetValue()
832                        if title != "":
833                            table.SetTitle(title)
834    
835                            # Make sure the session is marked as modified.
836                            # FIXME: This should be handled automatically,
837                            # but that requires more changes to the tables
838                            # than I have time for currently.
839                            self.application.session.changed()
840                finally:
841                    dlg.Destroy()
842    
843    
844      def ZoomInTool(self):      def ZoomInTool(self):
845          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 478  class MainWindow(wxFrame): Line 860  class MainWindow(wxFrame):
860      def FullExtent(self):      def FullExtent(self):
861          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
862    
863        def FullLayerExtent(self):
864            self.canvas.FitLayerToWindow(self.current_layer())
865    
866        def FullSelectionExtent(self):
867            self.canvas.FitSelectedToWindow()
868    
869        def ExportMap(self):
870            self.canvas.Export()
871    
872      def PrintMap(self):      def PrintMap(self):
873          self.canvas.Print()          self.canvas.Print()
874    
875      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
876            dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
877                                    self.Map().Title())
878            if dlg.ShowModal() == wxID_OK:
879                title = dlg.GetValue()
880                if title != "":
881                    self.Map().SetTitle(title)
882    
883            dlg.Destroy()
884    
885        def RenameLayer(self):
886            """Let the user rename the currently selected layer"""
887            layer = self.current_layer()
888            if layer is not None:
889                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
890                                        layer.Title())
891                try:
892                    if dlg.ShowModal() == wxID_OK:
893                        title = dlg.GetValue()
894                        if title != "":
895                            layer.SetTitle(title)
896                finally:
897                    dlg.Destroy()
898    
899        def identify_view_on_demand(self, layer, shapes):
900            """Subscribed to the canvas' SHAPES_SELECTED message
901    
902            If the current tool is the identify tool, at least one shape is
903            selected and the identify dialog is not shown, show the dialog.
904            """
905            # If the selection has become empty we don't need to do
906            # anything. Otherwise it could happen that the dialog was popped
907            # up when the selection became empty, e.g. when a new selection
908            # is opened while the identify tool is active and dialog had
909            # been closed
910            if not shapes:
911                return
912    
913          name = "identify_view"          name = "identify_view"
914          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
915              if not self.dialog_open(name):              if not self.dialog_open(name):
916                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
917                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
918                  dialog.Show(true)                  dialog.Show(True)
919              else:              else:
920                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
921                  pass                  pass
922    
923        def title_changed(self, map):
924            """Subscribed to the canvas' TITLE_CHANGED messages"""
925            self.update_title()
926    
927        def update_title(self):
928            """Update the window's title according to it's current state.
929    
930            In this default implementation the title is 'Thuban - ' followed
931            by the map's title or simply 'Thuban' if there is not map.
932            Derived classes should override this method to get different
933            titles.
934    
935            This method is called automatically by other methods when the
936            title may have to change. For the methods implemented in this
937            class this usually only means that a different map has been set
938            or the current map's title has changed.
939            """
940            map = self.Map()
941            if map is not None:
942                title = _("Thuban - %s") % (map.Title(),)
943            else:
944                title = _("Thuban")
945            self.SetTitle(title)
946    
947    
948  #  #
949  # Define all the commands available in the main window  # Define all the commands available in the main window
950  #  #
# Line 503  def call_method(context, methodname, *ar Line 956  def call_method(context, methodname, *ar
956      apply(getattr(context.mainwindow, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
957    
958  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
959                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
960      """Add a command implemented by a method of the mainwindow object"""      """Add a command implemented by a method of the mainwindow object"""
961      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
962                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
963                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
964    
965  def _tool_command(name, title, method, toolname, helptext = "",  def make_check_current_tool(toolname):
966                    icon = ""):      """Return a function that tests if the currently active tool is toolname
967      """Add a tool command"""  
968        The returned function can be called with the context and returns
969        true iff the currently active tool's name is toolname. It's directly
970        usable as the 'checked' callback of a command.
971        """
972      def check_current_tool(context, name=toolname):      def check_current_tool(context, name=toolname):
973          return context.mainwindow.canvas.CurrentTool() == name          return context.mainwindow.canvas.CurrentTool() == name
974      registry.Add(Command(name, title, call_method, args=(method,),      return check_current_tool
975                           helptext = helptext, icon = icon,  
976                           checked = check_current_tool))  def _tool_command(name, title, method, toolname, helptext = "",
977                      icon = "", sensitive = None):
978        """Add a tool command"""
979        registry.Add(ToolCommand(name, title, call_method, args=(method,),
980                                 helptext = helptext, icon = icon,
981                                 checked = make_check_current_tool(toolname),
982                                 sensitive = sensitive))
983    
984  def _has_selected_layer(context):  def _has_selected_layer(context):
985      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
986      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
987    
988    def _has_selected_shape_layer(context):
989        """Return true if a shape layer is selected in the context"""
990        return context.mainwindow.has_selected_shape_layer()
991    
992    def _has_selected_shapes(context):
993        """Return true if a layer is selected in the context"""
994        return context.mainwindow.has_selected_shapes()
995    
996    def _can_remove_layer(context):
997        return context.mainwindow.CanRemoveLayer()
998    
999    def _has_tree_window_shown(context):
1000        """Return true if the tree window is shown"""
1001        return context.mainwindow.SessionTreeShown()
1002    
1003    def _has_visible_map(context):
1004        """Return true iff theres a visible map in the mainwindow.
1005    
1006        A visible map is a map with at least one visible layer."""
1007        map = context.mainwindow.Map()
1008        if map is not None:
1009            for layer in map.Layers():
1010                if layer.Visible():
1011                    return 1
1012        return 0
1013    
1014    def _has_legend_shown(context):
1015        """Return true if the legend window is shown"""
1016        return context.mainwindow.LegendShown()
1017    
1018    def _has_gdal_support(context):
1019        """Return True if the GDAL is available"""
1020        return Thuban.Model.resource.has_gdal_support()
1021    
1022    def _has_dbconnections(context):
1023        """Return whether the the session has database connections"""
1024        return context.session.HasDBConnections()
1025    
1026    def _has_postgis_support(context):
1027        return has_postgis_support()
1028    
1029    
1030  # File menu  # File menu
1031  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1032  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
1033  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1034  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
1035  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("save_session", _("&Save Session"), "SaveSession",
1036  _method_command("exit", "&Exit", "Exit")                  helptext =_("Save this session to the file it was opened from"))
1037    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1038                    helptext = _("Save this session to a new file"))
1039    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1040                    checked = _has_tree_window_shown,
1041                    helptext = _("Toggle on/off the session tree analysis window"))
1042    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1043                    checked = _has_legend_shown,
1044                    helptext = _("Toggle Legend on/off"))
1045    _method_command("database_management", _("&Database Connections..."),
1046                    "DatabaseManagement",
1047                    sensitive = _has_postgis_support)
1048    _method_command("exit", _("E&xit"), "Exit",
1049                    helptext = _("Finish working with Thuban"))
1050    
1051  # Help menu  # Help menu
1052  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1053                    helptext = _("Info about Thuban authors, version and modules"))
1054    
1055    
1056  # Map menu  # Map menu
1057  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1058                    helptext = _("Set or change the map projection"))
1059    
1060  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1061                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1062  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1063                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1064  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1065                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1066  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1067                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1068  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1069                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1070  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
1071                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1072  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
1073    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1074                  helptext = _("Add/Remove labels"), icon = "label",
1075                  sensitive = _has_visible_map)
1076    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1077                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1078                  sensitive = _has_visible_map)
1079    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1080                    helptext = _("Zoom to the full layer extent"),
1081                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1082    _method_command("selected_full_extent", _("&Full selection extent"),
1083                    "FullSelectionExtent",
1084                    helptext = _("Zoom to the full selection extent"),
1085                    icon = "fullselextent", sensitive = _has_selected_shapes)
1086    _method_command("map_export", _("E&xport"), "ExportMap",
1087                    helptext = _("Export the map to file"))
1088    _method_command("map_print", _("Prin&t"), "PrintMap",
1089                    helptext = _("Print the map"))
1090    _method_command("map_rename", _("&Rename..."), "RenameMap",
1091                    helptext = _("Rename the map"))
1092    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1093                    helptext = _("Add a new layer to the map"))
1094    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1095                    helptext = _("Add a new image layer to the map"),
1096                    sensitive = _has_gdal_support)
1097    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1098                    helptext = _("Add a new database layer to active map"),
1099                    sensitive = _has_dbconnections)
1100    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1101                    helptext = _("Remove selected layer"),
1102                    sensitive = _can_remove_layer)
1103    
1104  # Layer menu  # Layer menu
1105  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1106                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1107  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1108                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1109                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1110  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1111                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1112                  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)",  
1113                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1114  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1115                  helptext = "Raise selected layer(s)",                  helptext = _("Raise selected layer"),
1116                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1117  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1118                  helptext = "Lower selected layer(s)",                  helptext = _("Lower selected layer"),
1119                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1120  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1121                  helptext = "Make selected layer(s) visible",                  helptext = _("Make selected layer visible"),
1122                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1123  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1124                  helptext = "Make selected layer(s) unvisible",                  helptext = _("Make selected layer unvisible"),
1125                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1126  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1127                  helptext = "Show the selected layer's table",                  helptext = _("Show the selected layer's table"),
1128                  sensitive = _has_selected_layer)                  sensitive = _has_selected_shape_layer)
1129    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1130                    sensitive = _has_selected_layer,
1131                    helptext = _("Edit the properties of the selected layer"))
1132    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1133                    sensitive = _has_selected_shape_layer,
1134                    helptext = _("Join and attach a table to the selected layer"))
1135    
1136    def _can_unjoin(context):
1137        """Return whether the Layer/Unjoin command can be executed.
1138    
1139        This is the case if a layer is selected and that layer has a
1140        shapestore that has an original shapestore.
1141        """
1142        layer = context.mainwindow.SelectedLayer()
1143        if layer is None:
1144            return 0
1145        getstore = getattr(layer, "ShapeStore", None)
1146        if getstore is not None:
1147            return getstore().OrigShapeStore() is not None
1148        else:
1149            return 0
1150    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1151                    sensitive = _can_unjoin,
1152                    helptext = _("Undo the last join operation"))
1153    
1154    
1155    def _has_tables(context):
1156        return bool(context.session.Tables())
1157    
1158    # Table menu
1159    _method_command("table_open", _("&Open..."), "TableOpen",
1160                    helptext = _("Open a DBF-table from a file"))
1161    _method_command("table_close", _("&Close..."), "TableClose",
1162           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1163                    helptext = _("Close one or more tables from a list"))
1164    _method_command("table_rename", _("&Rename..."), "TableRename",
1165                    sensitive = _has_tables,
1166                    helptext = _("Rename one or more tables"))
1167    _method_command("table_show", _("&Show..."), "TableShow",
1168                    sensitive = _has_tables,
1169                    helptext = _("Show one or more tables in a dialog"))
1170    _method_command("table_join", _("&Join..."), "TableJoin",
1171                    sensitive = _has_tables,
1172                    helptext = _("Join two tables creating a new one"))
1173    
1174  # the menu structure  #  Export only under Windows ...
1175  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",  
1176                          None,                          None,
1177                            "map_rename",
1178                          "map_projection",                          "map_projection",
1179                          None,                          None,
1180                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1181                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
                         None,  
1182                          "map_full_extent",                          "map_full_extent",
1183                            "layer_full_extent",
1184                            "selected_full_extent",
1185                            None,
1186                            "map_identify_tool", "map_label_tool",
1187                          None,                          None,
1188                          "map_print"]),                          "toggle_legend",
1189                    Menu("layer", "&Layer",                          None]
1190                         ["layer_fill_color", "layer_transparent_fill",  if wxPlatform == '__WXMSW__':
1191                          "layer_outline_color", "layer_no_outline",      map_menu.append("map_export")
1192    map_menu.append("map_print")
1193    
1194    # the menu structure
1195    main_menu = Menu("<main>", "<main>",
1196                     [Menu("file", _("&File"),
1197                           ["new_session", "open_session", None,
1198                            "save_session", "save_session_as", None,
1199                            "database_management", None,
1200                            "toggle_session_tree", None,
1201                            "exit"]),
1202                      Menu("map", _("&Map"), map_menu),
1203                      Menu("layer", _("&Layer"),
1204                           ["layer_rename", "layer_duplicate",
1205                          None,                          None,
1206                          "layer_raise", "layer_lower",                          "layer_raise", "layer_lower",
1207                          None,                          None,
1208                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1209                          None,                          None,
1210                          "layer_show_table"]),                          "layer_projection",
1211                    Menu("help", "&Help",                          None,
1212                            "layer_show_table",
1213                            "layer_jointable",
1214                            "layer_unjointable",
1215                            None,
1216                            "layer_properties"]),
1217                      Menu("table", _("&Table"),
1218                           ["table_open", "table_close", "table_rename",
1219                           None,
1220                           "table_show",
1221                           None,
1222                           "table_join"]),
1223                      Menu("help", _("&Help"),
1224                         ["help_about"])])                         ["help_about"])])
1225    
1226  # the main toolbar  # the main toolbar
1227    
1228  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
1229                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1230                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent",
1231                         "layer_full_extent",
1232                         "selected_full_extent",
1233                         None,
1234                         "map_identify_tool", "map_label_tool"])
1235    
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