/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 188 by bh, Tue May 28 12:38:45 2002 UTC revision 1309 by jonathan, Thu Jun 26 17:00:44 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
5    # Frank Koormann <[email protected]>
6  #  #
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 12  The main window Line 13  The main window
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    
16    __ThubanVersion__ = "0.8" #"$THUBAN_0_2$"
17    #__BuildDate__ = "$Date$"
18    
19  import os  import os
20    import copy
21    
22  from wxPython.wx import *  from wxPython.wx import *
23    from wxPython.wx import __version__ as wxPython_version
24    
25  import Thuban  import Thuban
26    import Thuban.version
27    
28    from Thuban import _
29  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
30  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
31  from Thuban.Model.color import Color  
32  from Thuban.Model.proj import Projection  # XXX: replace this by
33    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
34    # when Thuban does not support wxPython 2.4.0 any more.
35    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
36    
37  import view  import view
38  import tree  import tree
 import proj4dialog  
39  import tableview, identifyview  import tableview, identifyview
40    from Thuban.UI.classifier import Classifier
41    import legend
42  from menu import Menu  from menu import Menu
43    
44  import main  from context import Context
45  from command import registry, Command  from command import registry, Command, ToolCommand
46  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION
47    from about import About
48    
49  # the directory where the toolbar icons are stored  from Thuban.UI.dock import DockFrame
50  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  from Thuban.UI.join import JoinDialog
51  bitmapext = ".xpm"  
52    import resource
53    import Thuban.Model.resource
54  class MainWindow(wxFrame):  
55    import projdialog
56    
57    
58    class MainWindow(DockFrame):
59    
60        # Some messages that can be subscribed/unsubscribed directly through
61        # the MapCanvas come in fact from other objects. This is a map to
62        # map those messages to the names of the instance variables they
63        # actually come from. This delegation is implemented in the
64        # Subscribe and unsubscribed methods
65        delegated_messages = {LAYER_SELECTED: "canvas",
66                              SHAPES_SELECTED: "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      def __init__(self, parent, ID, interactor):          self.application = application
         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    
89          self.init_ids()          self.init_ids()
90    
91          #main_menu.print_menu()          # creat the menubar from the main_menu description
92          self.SetMenuBar(self.build_menu_bar(main_menu))          self.SetMenuBar(self.build_menu_bar(main_menu))
93    
94          # toolbar          # Similarly, create the toolbar from main_toolbar
95          toolbar = self.CreateToolBar(wxTB_3DBUTTONS)          toolbar = self.build_toolbar(main_toolbar)
   
         # set the size of the tools' bitmaps. Not needed on wxGTK, but  
         # on Windows. We probably shouldn't hardwire the bitmap size  
         # here  
         toolbar.SetToolBitmapSize(wxSize(24, 24))  
   
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool", "map_full_extent"]:  
             self.add_toolbar_command(toolbar, name)  
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    
106            self.SetMainWindow(self.canvas)
107    
108            self.SetAutoLayout(True)
109    
110          self.init_dialogs()          self.init_dialogs()
111    
112          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
113    
114          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
115    
116        def Subscribe(self, channel, *args):
117            """Subscribe a function to a message channel.
118    
119            If channel is one of the delegated messages call the appropriate
120            object's Subscribe method. Otherwise do nothing.
121            """
122            if channel in self.delegated_messages:
123                object = getattr(self, self.delegated_messages[channel])
124                object.Subscribe(channel, *args)
125            else:
126                print "Trying to subscribe to unsupported channel %s" % channel
127    
128        def Unsubscribe(self, channel, *args):
129            """Unsubscribe a function from a message channel.
130    
131            If channel is one of the delegated messages call the appropriate
132            object's Unsubscribe method. Otherwise do nothing.
133            """
134            if channel in self.delegated_messages:
135                object = getattr(self, self.delegated_messages[channel])
136                object.Unsubscribe(channel, *args)
137    
138        def __getattr__(self, attr):
139            """If attr is one of the delegated methods return that method
140    
141            Otherwise raise AttributeError.
142            """
143            if attr in self.delegated_methods:
144                return getattr(getattr(self, self.delegated_methods[attr]), attr)
145            raise AttributeError(attr)
146    
147      def init_ids(self):      def init_ids(self):
148          """Initialize the ids"""          """Initialize the ids"""
149          self.current_id = 6000          self.current_id = 6000
150          self.id_to_name = {}          self.id_to_name = {}
151          self.name_to_id = {}          self.name_to_id = {}
152            self.events_bound = {}
153    
154      def get_id(self, name):      def get_id(self, name):
155          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 100  class MainWindow(wxFrame): Line 163  class MainWindow(wxFrame):
163              self.id_to_name[ID] = name              self.id_to_name[ID] = name
164          return ID          return ID
165    
166        def bind_command_events(self, command, ID):
167            """Bind the necessary events for the given command and ID"""
168            if not self.events_bound.has_key(ID):
169                # the events haven't been bound yet
170                EVT_MENU(self, ID, self.invoke_command)
171                if command.IsDynamic():
172                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
173    
174      def build_menu_bar(self, menudesc):      def build_menu_bar(self, menudesc):
175          """Build and return the menu bar from the menu description"""          """Build and return the menu bar from the menu description"""
176          menu_bar = wxMenuBar()          menu_bar = wxMenuBar()
# Line 111  class MainWindow(wxFrame): Line 182  class MainWindow(wxFrame):
182          return menu_bar          return menu_bar
183    
184      def build_menu(self, menudesc):      def build_menu(self, menudesc):
185          """Build and return a wxMenu from a menudescription"""          """Return a wxMenu built from the menu description menudesc"""
186          wxmenu = wxMenu()          wxmenu = wxMenu()
187          last = None          last = None
188          for item in menudesc.items:          for item in menudesc.items:
             # here the items must all be Menu instances themselves  
189              if item is None:              if item is None:
190                  # a separator. Only add one if the last item was not a                  # a separator. Only add one if the last item was not a
191                  # separator                  # separator
# Line 130  class MainWindow(wxFrame): Line 200  class MainWindow(wxFrame):
200              last = item              last = item
201          return wxmenu          return wxmenu
202    
203        def build_toolbar(self, toolbardesc):
204            """Build and return the main toolbar window from a toolbar description
205    
206            The parameter should be an instance of the Menu class but it
207            should not contain submenus.
208            """
209            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
210    
211            # set the size of the tools' bitmaps. Not needed on wxGTK, but
212            # on Windows, although it doesn't work very well there. It seems
213            # that only 16x16 icons are really supported on windows.
214            # We probably shouldn't hardwire the bitmap size here.
215            toolbar.SetToolBitmapSize(wxSize(24, 24))
216    
217            for item in toolbardesc.items:
218                if item is None:
219                    toolbar.AddSeparator()
220                else:
221                    # assume it's a string.
222                    self.add_toolbar_command(toolbar, item)
223    
224            return toolbar
225    
226      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
227          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
228    
# Line 143  class MainWindow(wxFrame): Line 236  class MainWindow(wxFrame):
236                  ID = self.get_id(name)                  ID = self.get_id(name)
237                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
238                              command.IsCheckCommand())                              command.IsCheckCommand())
239                  EVT_MENU(self, ID, self.invoke_command)                  self.bind_command_events(command, ID)
                 if command.IsDynamic():  
                     EVT_UPDATE_UI(self, ID, self.update_command_ui)  
240              else:              else:
241                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
242    
243      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
244          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 162  class MainWindow(wxFrame): Line 253  class MainWindow(wxFrame):
253              command = registry.Command(name)              command = registry.Command(name)
254              if command is not None:              if command is not None:
255                  ID = self.get_id(name)                  ID = self.get_id(name)
256                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
257                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
258                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
259                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
260                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
261                    self.bind_command_events(command, ID)
262              else:              else:
263                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
264    
265        def Context(self):
266            """Return the context object for a command invoked from this window
267            """
268            return Context(self.application, self.application.Session(), self)
269    
270      def invoke_command(self, event):      def invoke_command(self, event):
271          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
272          if name is not None:          if name is not None:
273              command = registry.Command(name)              command = registry.Command(name)
274              command.Execute(self)              command.Execute(self.Context())
275          else:          else:
276              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
277    
278      def update_command_ui(self, event):      def update_command_ui(self, event):
279          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
280            context = self.Context()
281          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
282          if command is not None:          if command is not None:
283              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
284              event.SetText(command.DynText(self))              event.Enable(sensitive)
285                if command.IsTool() and not sensitive and command.Checked(context):
286                    # When a checked tool command is disabled deselect all
287                    # tools. Otherwise the tool would remain active but it
288                    # might lead to errors if the tools stays active. This
289                    # problem occurred in GREAT-ER and this fixes it, but
290                    # it's not clear to me whether this is really the best
291                    # way to do it (BH, 20021206).
292                    self.canvas.SelectTool(None)
293                event.SetText(command.DynText(context))
294              if command.IsCheckCommand():              if command.IsCheckCommand():
295                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
296    
297      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
298          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
299          and return the result"""          and return the result"""
300          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
301            dlg.CenterOnParent()
302          result = dlg.ShowModal()          result = dlg.ShowModal()
303          dlg.Destroy()          dlg.Destroy()
304          return result          return result
# Line 204  class MainWindow(wxFrame): Line 312  class MainWindow(wxFrame):
312    
313      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
314          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
315              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
316          self.dialogs[name] = dialog          self.dialogs[name] = dialog
317    
318      def dialog_open(self, name):      def dialog_open(self, name):
# Line 222  class MainWindow(wxFrame): Line 330  class MainWindow(wxFrame):
330              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
331          else:          else:
332              text = ""              text = ""
333            self.set_position_text(text)
334    
335        def set_position_text(self, text):
336            """Set the statusbar text showing the current position.
337    
338            By default the text is shown in field 0 of the status bar.
339            Override this method in derived classes to put it into a
340            different field of the statusbar.
341            """
342          self.SetStatusText(text)          self.SetStatusText(text)
343    
344      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
# Line 233  class MainWindow(wxFrame): Line 350  class MainWindow(wxFrame):
350          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
351          a cancel button, otherwise not.          a cancel button, otherwise not.
352          """          """
353          if main.app.session.WasModified():          if self.application.session.WasModified():
354              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
355              if can_veto:              if can_veto:
356                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
357              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
358                                          ("The session has been modified."                                          _("The session has been modified."
359                                           " Do you want to save it?"),                                           " Do you want to save it?"),
360                                          flags)                                          flags)
361              if result == wxID_YES:              if result == wxID_YES:
# Line 247  class MainWindow(wxFrame): Line 364  class MainWindow(wxFrame):
364              result = wxID_NO              result = wxID_NO
365          return result          return result
366    
367        def prepare_new_session(self):
368            for d in self.dialogs.values():
369                if not isinstance(d, tree.SessionTreeView):
370                    d.Close()
371    
372      def NewSession(self):      def NewSession(self):
373          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
374          main.app.SetSession(create_empty_session())              self.prepare_new_session()
375                self.application.SetSession(create_empty_session())
376    
377      def OpenSession(self):      def OpenSession(self):
378          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
379          dlg = wxFileDialog(self, "Select a session file", ".", "",              dlg = wxFileDialog(self, _("Open Session"), ".", "",
380                             "*.thuban", wxOPEN)                                 "Thuban Session File (*.thuban)|*.thuban",
381          if dlg.ShowModal() == wxID_OK:                                 wxOPEN)
382              main.app.OpenSession(dlg.GetPath())              if dlg.ShowModal() == wxID_OK:
383          dlg.Destroy()                  self.prepare_new_session()
384                    self.application.OpenSession(dlg.GetPath())
385                dlg.Destroy()
386    
387      def SaveSession(self):      def SaveSession(self):
388          if main.app.session.filename == None:          if self.application.session.filename == None:
389              self.SaveSessionAs()              self.SaveSessionAs()
390          main.app.SaveSession()          else:
391                self.application.SaveSession()
392    
393      def SaveSessionAs(self):      def SaveSessionAs(self):
394          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
395                             "*.thuban", wxOPEN)                             "Thuban Session File (*.thuban)|*.thuban",
396                               wxSAVE|wxOVERWRITE_PROMPT)
397          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
398              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
399              main.app.SaveSession()              self.application.SaveSession()
400          dlg.Destroy()          dlg.Destroy()
401    
402      def Exit(self):      def Exit(self):
403          self.Close(false)          self.Close(False)
404    
405      def OnClose(self, event):      def OnClose(self, event):
406          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
407          if result == wxID_CANCEL:          if result == wxID_CANCEL:
408              event.Veto()              event.Veto()
409          else:          else:
410                # FIXME: it would be better to tie the unsubscription to
411                # wx's destroy event, but that isn't implemented for wxGTK
412                # yet.
413                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
414                DockFrame.OnClose(self, event)
415                for dlg in self.dialogs.values():
416                    dlg.Destroy()
417                self.canvas.Destroy()
418              self.Destroy()              self.Destroy()
419    
420      def SetMap(self, map):      def SetMap(self, map):
421          self.canvas.SetMap(map)          self.canvas.SetMap(map)
422            self.__SetTitle(map.Title())
423    
424            dialog = self.FindRegisteredDock("legend")
425            if dialog is not None:
426                dialog.GetPanel().SetMap(self.Map())
427    
428        def Map(self):
429            """Return the map displayed by this mainwindow"""
430    
431      def ShowSessionTree(self):          return self.canvas.Map()
432    
433        def ToggleSessionTree(self):
434            """If the session tree is shown close it otherwise create a new tree"""
435          name = "session_tree"          name = "session_tree"
436          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
437          if dialog is None:          if dialog is None:
438              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
439              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
440              dialog.Show(true)              dialog.Show(True)
441          else:          else:
442              # FIXME: bring dialog to front here              dialog.Close()
443              pass  
444        def SessionTreeShown(self):
445            """Return true iff the session tree is currently shown"""
446            return self.get_open_dialog("session_tree") is not None
447    
448      def About(self):      def About(self):
449          self.RunMessageBox("About",          dlg = About(self)
450                             ("Thuban is a program for\n"          dlg.ShowModal()
451                              "exploring geographic data.\n"          dlg.Destroy()
                             "Copyright (C) 2001 Intevation GmbH.\n"  
                             "Thuban is licensed under the GPL"),  
                            wxOK | wxICON_INFORMATION)  
452    
453      def AddLayer(self):      def AddLayer(self):
454          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
455                             wxOPEN)                             wxOPEN)
456          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
457              filename = dlg.GetPath()              filename = dlg.GetPath()
458              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
459              map = self.canvas.Map()              map = self.canvas.Map()
460              has_layers = map.HasLayers()              has_layers = map.HasLayers()
461              try:              try:
462                    store = self.application.Session().OpenShapefile(filename)
463                except IOError:
464                    # the layer couldn't be opened
465                    self.RunMessageBox(_("Add Layer"),
466                                       _("Can't open the file '%s'.") % filename)
467                else:
468                    layer = Layer(title, store)
469                  map.AddLayer(layer)                  map.AddLayer(layer)
470                    if not has_layers:
471                        # if we're adding a layer to an empty map, fit the
472                        # new map to the window
473                        self.canvas.FitMapToWindow()
474            dlg.Destroy()
475    
476        def AddRasterLayer(self):
477            dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",
478                               wxOPEN)
479            if dlg.ShowModal() == wxID_OK:
480                filename = dlg.GetPath()
481                title = os.path.splitext(os.path.basename(filename))[0]
482                map = self.canvas.Map()
483                has_layers = map.HasLayers()
484                try:
485                    layer = RasterLayer(title, filename)
486              except IOError:              except IOError:
487                  # the layer couldn't be opened                  # the layer couldn't be opened
488                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
489                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
490              else:              else:
491                    map.AddLayer(layer)
492                  if not has_layers:                  if not has_layers:
493                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
494                      # new map to the window                      # new map to the window
495                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
496          dlg.Destroy()          dlg.Destroy()
# Line 331  class MainWindow(wxFrame): Line 500  class MainWindow(wxFrame):
500          if layer is not None:          if layer is not None:
501              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
502    
503        def CanRemoveLayer(self):
504            """Return true if the currently selected layer can be deleted.
505    
506            If no layer is selected return False.
507    
508            The return value of this method determines whether the remove
509            layer command is sensitive in menu.
510            """
511            layer = self.current_layer()
512            if layer is not None:
513                return self.canvas.Map().CanRemoveLayer(layer)
514            return False
515    
516      def RaiseLayer(self):      def RaiseLayer(self):
517          layer = self.current_layer()          layer = self.current_layer()
518          if layer is not None:          if layer is not None:
519              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
520            
521      def LowerLayer(self):      def LowerLayer(self):
522          layer = self.current_layer()          layer = self.current_layer()
523          if layer is not None:          if layer is not None:
# Line 346  class MainWindow(wxFrame): Line 528  class MainWindow(wxFrame):
528    
529          If no layer is selected, return None          If no layer is selected, return None
530          """          """
531          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
532    
533      def has_selected_layer(self):      def has_selected_layer(self):
534          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
535          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
536    
537      def choose_color(self):      def has_selected_shapes(self):
538          """Run the color selection dialog and return the selected color.          """Return true if a shape is currently selected"""
539            return self.canvas.HasSelectedShapes()
540    
541          If the user cancels, return None.      def HideLayer(self):
         """  
         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  
   
     def LayerFillColor(self):  
542          layer = self.current_layer()          layer = self.current_layer()
543          if layer is not None:          if layer is not None:
544              color = self.choose_color()              layer.SetVisible(0)
             if color is not None:  
                 layer.SetFill(color)  
545    
546      def LayerTransparentFill(self):      def ShowLayer(self):
547          layer = self.current_layer()          layer = self.current_layer()
548          if layer is not None:          if layer is not None:
549              layer.SetFill(None)              layer.SetVisible(1)
550    
551      def LayerOutlineColor(self):      def DuplicateLayer(self):
552            """Ceate a new layer above the selected layer with the same shapestore
553            """
554          layer = self.current_layer()          layer = self.current_layer()
555          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
556              color = self.choose_color()              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
557              if color is not None:                                layer.ShapeStore(),
558                  layer.SetStroke(color)                                projection = layer.GetProjection())
559                new_classification = copy.deepcopy(layer.GetClassification())
560                new_layer.SetClassification(new_classification)
561                self.Map().AddLayer(new_layer)
562    
563      def LayerNoOutline(self):      def CanDuplicateLayer(self):
564            """Return whether the DuplicateLayer method can create a duplicate"""
565          layer = self.current_layer()          layer = self.current_layer()
566          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetStroke(None)  
   
     def HideLayer(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetVisible(1)  
567    
568      def LayerShowTable(self):      def LayerShowTable(self):
569          layer = self.current_layer()          layer = self.current_layer()
570          if layer is not None:          if layer is not None:
571              table = layer.table              table = layer.ShapeStore().Table()
572              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
573              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
574              if dialog is None:              if dialog is None:
575                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
576                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
577                                                layer, table)                                           layer, table)
578                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
579                  dialog.Show(true)                  dialog.Show(True)
580              else:              else:
581                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
582                  pass                  pass
583    
584      def Projection(self):      def MapProjection(self):
585          map = self.canvas.Map()  
586          proj = map.projection          name = "map_projection"
587          if proj is None:          dialog = self.get_open_dialog(name)
588              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())  
589          else:          if dialog is None:
590              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              map = self.canvas.Map()
591                                                 map.BoundingBox())              dialog = projdialog.ProjFrame(self, name,
592          if proj4Dlg.ShowModal() == wxID_OK:                       _("Map Projection: %s") % map.Title(), map)
593              params = proj4Dlg.GetParams()              self.add_dialog(name, dialog)
594              if params is not None:              dialog.Show()
595                  proj = Projection(params)          dialog.Raise()
596    
597        def LayerProjection(self):
598    
599            layer = self.current_layer()
600    
601            name = "layer_projection" + str(id(layer))
602            dialog = self.get_open_dialog(name)
603    
604            if dialog is None:
605                map = self.canvas.Map()
606                dialog = projdialog.ProjFrame(self, name,
607                         _("Layer Projection: %s") % layer.Title(), layer)
608                self.add_dialog(name, dialog)
609                dialog.Show()
610            dialog.Raise()
611    
612        def LayerEditProperties(self):
613    
614            #
615            # the menu option for this should only be available if there
616            # is a current layer, so we don't need to check if the
617            # current layer is None
618            #
619    
620            layer = self.current_layer()
621            self.OpenLayerProperties(layer)
622    
623        def OpenLayerProperties(self, layer, group = None):
624            name = "layer_properties" + str(id(layer))
625            dialog = self.get_open_dialog(name)
626    
627            if dialog is None:
628                dialog = Classifier(self, name, self.Map(), layer, group)
629                self.add_dialog(name, dialog)
630                dialog.Show()
631            dialog.Raise()
632    
633        def LayerJoinTable(self):
634            layer = self.canvas.SelectedLayer()
635            if layer is not None:
636                dlg = JoinDialog(self, _("Join Layer with Table"),
637                                 self.application.session,
638                                 layer = layer)
639                dlg.ShowModal()
640    
641        def LayerUnjoinTable(self):
642            layer = self.canvas.SelectedLayer()
643            if layer is not None:
644                orig_store = layer.ShapeStore().OrigShapeStore()
645                if orig_store:
646                    layer.SetShapeStore(orig_store)
647    
648        def ShowLegend(self):
649            if not self.LegendShown():
650                self.ToggleLegend()
651    
652        def ToggleLegend(self):
653            """Show the legend if it's not shown otherwise hide it again"""
654            name = "legend"
655            dialog = self.FindRegisteredDock(name)
656    
657            if dialog is None:
658                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
659                legend.LegendPanel(dialog, None, self)
660                dialog.Dock()
661                dialog.GetPanel().SetMap(self.Map())
662                dialog.Show()
663            else:
664                dialog.Show(not dialog.IsShown())
665    
666            self.canvas.FitMapToWindow()
667    
668        def LegendShown(self):
669            """Return true iff the legend is currently open"""
670            dialog = self.FindRegisteredDock("legend")
671            return dialog is not None and dialog.IsShown()
672    
673        def TableOpen(self):
674            dlg = wxFileDialog(self, _("Open Table"), ".", "",
675                               _("DBF Files (*.dbf)") + "|*.dbf|" +
676                               #_("CSV Files (*.csv)") + "|*.csv|" +
677                               _("All Files (*.*)") + "|*.*",
678                               wxOPEN)
679            if dlg.ShowModal() == wxID_OK:
680                filename = dlg.GetPath()
681                dlg.Destroy()
682                try:
683                    table = self.application.session.OpenTableFile(filename)
684                except IOError:
685                    # the layer couldn't be opened
686                    self.RunMessageBox(_("Open Table"),
687                                       _("Can't open the file '%s'.") % filename)
688              else:              else:
689                  proj = None                  self.ShowTableView(table)
690              map.SetProjection(proj)  
691          proj4Dlg.Destroy()      def TableClose(self):
692            tables = self.application.session.UnreferencedTables()
693    
694            lst = [(t.Title(), t) for t in tables]
695            lst.sort()
696            titles = [i[0] for i in lst]
697            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
698                                         _("Close Table"), titles,
699                                         size = (400, 300),
700                                         style = wxDEFAULT_DIALOG_STYLE |
701                                                 wxRESIZE_BORDER)
702            if dlg.ShowModal() == wxID_OK:
703                for i in dlg.GetValue():
704                    self.application.session.RemoveTable(lst[i][1])
705    
706    
707        def TableShow(self):
708            """Offer a multi-selection dialog for tables to be displayed
709    
710            The windows for the selected tables are opened or brought to
711            the front.
712            """
713            tables = self.application.session.Tables()
714    
715            lst = [(t.Title(), t) for t in tables]
716            lst.sort()
717            titles = [i[0] for i in lst]
718            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
719                                         _("Show Table"), titles,
720                                         size = (400,300),
721                                         style = wxDEFAULT_DIALOG_STYLE |
722                                                 wxRESIZE_BORDER)
723            if (dlg.ShowModal() == wxID_OK):
724                for i in dlg.GetValue():
725                    # XXX: if the table belongs to a layer, open a
726                    # LayerTableFrame instead of QueryTableFrame
727                    self.ShowTableView(lst[i][1])
728    
729        def TableJoin(self):
730            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
731            dlg.ShowModal()
732    
733        def ShowTableView(self, table):
734            """Open a table view for the table and optionally"""
735            name = "table_view%d" % id(table)
736            dialog = self.get_open_dialog(name)
737            if dialog is None:
738                dialog = tableview.QueryTableFrame(self, name,
739                                                   _("Table: %s") % table.Title(),
740                                                   table)
741                self.add_dialog(name, dialog)
742                dialog.Show(True)
743            # FIXME: else bring dialog to front
744    
745        def TableRename(self):
746            """Let the user rename a table"""
747    
748            # First, let the user select a table
749            tables = self.application.session.Tables()
750            lst = [(t.Title(), t) for t in tables]
751            lst.sort()
752            titles = [i[0] for i in lst]
753            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
754                                         _("Rename Table"), titles,
755                                         size = (400,300),
756                                         style = wxDEFAULT_DIALOG_STYLE |
757                                                 wxRESIZE_BORDER)
758            if (dlg.ShowModal() == wxID_OK):
759                to_rename = [lst[i][1] for i in dlg.GetValue()]
760                dlg.Destroy()
761            else:
762                to_rename = []
763    
764            # Second, let the user rename the layers
765            for table in to_rename:
766                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
767                                        table.Title())
768                try:
769                    if dlg.ShowModal() == wxID_OK:
770                        title = dlg.GetValue()
771                        if title != "":
772                            table.SetTitle(title)
773    
774                            # Make sure the session is marked as modified.
775                            # FIXME: This should be handled automatically,
776                            # but that requires more changes to the tables
777                            # than I have time for currently.
778                            self.application.session.changed()
779                finally:
780                    dlg.Destroy()
781    
782    
783      def ZoomInTool(self):      def ZoomInTool(self):
784          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 454  class MainWindow(wxFrame): Line 799  class MainWindow(wxFrame):
799      def FullExtent(self):      def FullExtent(self):
800          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
801    
802        def FullLayerExtent(self):
803            self.canvas.FitLayerToWindow(self.current_layer())
804    
805        def FullSelectionExtent(self):
806            self.canvas.FitSelectedToWindow()
807    
808        def ExportMap(self):
809            self.canvas.Export()
810    
811      def PrintMap(self):      def PrintMap(self):
812          self.canvas.Print()          self.canvas.Print()
813    
814      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
815            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
816                                    self.Map().Title())
817            if dlg.ShowModal() == wxID_OK:
818                title = dlg.GetValue()
819                if title != "":
820                    self.Map().SetTitle(title)
821                    self.__SetTitle(title)
822    
823            dlg.Destroy()
824    
825        def RenameLayer(self):
826            """Let the user rename the currently selected layer"""
827            layer = self.current_layer()
828            if layer is not None:
829                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
830                                        layer.Title())
831                try:
832                    if dlg.ShowModal() == wxID_OK:
833                        title = dlg.GetValue()
834                        if title != "":
835                            layer.SetTitle(title)
836                finally:
837                    dlg.Destroy()
838    
839        def identify_view_on_demand(self, layer, shapes):
840            """Subscribed to the canvas' SHAPES_SELECTED message
841    
842            If the current tool is the identify tool, at least one shape is
843            selected and the identify dialog is not shown, show the dialog.
844            """
845            # If the selection has become empty we don't need to do
846            # anything. Otherwise it could happen that the dialog was popped
847            # up when the selection became empty, e.g. when a new selection
848            # is opened while the identify tool is active and dialog had
849            # been closed
850            if not shapes:
851                return
852    
853          name = "identify_view"          name = "identify_view"
854          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
855              if not self.dialog_open(name):              if not self.dialog_open(name):
856                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
857                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
858                  dialog.Show(true)                  dialog.Show(True)
859              else:              else:
860                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
861                  pass                  pass
862    
863        def __SetTitle(self, title):
864            self.SetTitle("Thuban - " + title)
865    
866  #  #
867  # Define all the commands available in the main window  # Define all the commands available in the main window
868  #  #
# Line 475  class MainWindow(wxFrame): Line 870  class MainWindow(wxFrame):
870    
871  # Helper functions to define common command implementations  # Helper functions to define common command implementations
872  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
873      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
874      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
875    
876  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
877                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
878      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
879      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
880                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
881                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
882    
883    def make_check_current_tool(toolname):
884        """Return a function that tests if the currently active tool is toolname
885    
886        The returned function can be called with the context and returns
887        true iff the currently active tool's name is toolname. It's directly
888        usable as the 'checked' callback of a command.
889        """
890        def check_current_tool(context, name=toolname):
891            return context.mainwindow.canvas.CurrentTool() == name
892        return check_current_tool
893    
894  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
895                    icon = ""):                    icon = "", sensitive = None):
896      """Add a tool command"""      """Add a tool command"""
897      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
898          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
899      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
900                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
901    
902  def _has_selected_layer(context):  def _has_selected_layer(context):
903      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
904      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
905    
906    def _has_selected_shapes(context):
907        """Return true if a layer is selected in the context"""
908        return context.mainwindow.has_selected_shapes()
909    
910    def _can_remove_layer(context):
911        return context.mainwindow.CanRemoveLayer()
912    
913    def _has_tree_window_shown(context):
914        """Return true if the tree window is shown"""
915        return context.mainwindow.SessionTreeShown()
916    
917    def _has_visible_map(context):
918        """Return true iff theres a visible map in the mainwindow.
919    
920        A visible map is a map with at least one visible layer."""
921        map = context.mainwindow.Map()
922        if map is not None:
923            for layer in map.Layers():
924                if layer.Visible():
925                    return 1
926        return 0
927    
928    def _has_legend_shown(context):
929        """Return true if the legend window is shown"""
930        return context.mainwindow.LegendShown()
931    
932    def _has_gdal_support(context):
933        """Return True if the GDAL is available"""
934        return Thuban.Model.resource.has_gdal_support()
935    
936  # File menu  # File menu
937  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
938  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
939  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
940  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
941  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("save_session", _("&Save Session"), "SaveSession",
942  _method_command("exit", "&Exit", "Exit")                  helptext =_("Save this session to the file it was opened from"))
943    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
944                    helptext = _("Save this session to a new file"))
945    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
946                    checked = _has_tree_window_shown,
947                    helptext = _("Toggle on/off the session tree analysis window"))
948    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
949                    checked = _has_legend_shown,
950                    helptext = _("Toggle Legend on/off"))
951    _method_command("exit", _("E&xit"), "Exit",
952                    helptext = _("Finish working with Thuban"))
953    
954  # Help menu  # Help menu
955  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
956                    helptext = _("Info about Thuban authors, version and modules"))
957    
958    
959  # Map menu  # Map menu
960  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
961                    helptext = _("Set or change the map projection"))
962    
963  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
964                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
965  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
966                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
967  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
968                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
969  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
970                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
971  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
972                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
973  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
974                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
975  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
976    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
977                  helptext = _("Add/Remove labels"), icon = "label",
978                  sensitive = _has_visible_map)
979    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
980                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
981                  sensitive = _has_visible_map)
982    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
983                    helptext = _("Zoom to the full layer extent"),
984                    icon = "fulllayerextent", sensitive = _has_selected_layer)
985    _method_command("selected_full_extent", _("&Full selection extent"),
986                    "FullSelectionExtent",
987                    helptext = _("Zoom to the full selection extent"),
988                    icon = "fullselextent", sensitive = _has_selected_shapes)
989    _method_command("map_export", _("E&xport"), "ExportMap",
990                    helptext = _("Export the map to file"))
991    _method_command("map_print", _("Prin&t"), "PrintMap",
992                    helptext = _("Print the map"))
993    _method_command("map_rename", _("&Rename..."), "RenameMap",
994                    helptext = _("Rename the map"))
995    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
996                    helptext = _("Add a new layer to the map"))
997    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
998                    helptext = _("Add a new image layer to the map"),
999                    sensitive = _has_gdal_support)
1000    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1001                    helptext = _("Remove selected layer"),
1002                    sensitive = _can_remove_layer)
1003    
1004  # Layer menu  # Layer menu
1005  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1006                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1007  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1008                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1009                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1010  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1011                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1012                  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)",  
1013                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1014  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1015                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Raise selected layer"),
1016                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1017  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1018                  helptext = "Raise selected layer(s)",                  helptext = _("Lower selected layer"),
1019                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1020  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1021                  helptext = "Lower selected layer(s)",                  helptext = _("Make selected layer visible"),
1022                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1023  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1024                  helptext = "Make selected layer(s) visible",                  helptext = _("Make selected layer unvisible"),
1025                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1026  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1027                  helptext = "Make selected layer(s) unvisible",                  helptext = _("Show the selected layer's table"),
1028                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1029  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1030                  helptext = "Show the selected layer's table",                  sensitive = _has_selected_layer,
1031                  sensitive = _has_selected_layer)                  helptext = _("Edit the properties of the selected layer"))
1032    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1033                    sensitive = _has_selected_layer,
1034                    helptext = _("Join and attach a table to the selected layer"))
1035    
1036    def _can_unjoin(context):
1037        """Return whether the Layer/Unjoin command can be executed.
1038    
1039        This is the case if a layer is selected and that layer has a
1040        shapestore that has an original shapestore.
1041        """
1042        layer = context.mainwindow.SelectedLayer()
1043        if layer is None:
1044            return 0
1045        getstore = getattr(layer, "ShapeStore", None)
1046        if getstore is not None:
1047            return getstore().OrigShapeStore() is not None
1048        else:
1049            return 0
1050    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1051                    sensitive = _can_unjoin,
1052                    helptext = _("Undo the last join operation"))
1053    
1054    
1055    def _has_tables(context):
1056        return bool(context.session.Tables())
1057    
1058    # Table menu
1059    _method_command("table_open", _("&Open..."), "TableOpen",
1060                    helptext = _("Open a DBF-table from a file"))
1061    _method_command("table_close", _("&Close..."), "TableClose",
1062           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1063                    helptext = _("Close one or more tables from a list"))
1064    _method_command("table_rename", _("&Rename..."), "TableRename",
1065                    sensitive = _has_tables,
1066                    helptext = _("Rename one or more tables"))
1067    _method_command("table_show", _("&Show..."), "TableShow",
1068                    sensitive = _has_tables,
1069                    helptext = _("Show one or more tables in a dialog"))
1070    _method_command("table_join", _("&Join..."), "TableJoin",
1071                    sensitive = _has_tables,
1072                    helptext = _("Join two tables creating a new one"))
1073    
1074  # the menu structure  #  Export only under Windows ...
1075  main_menu = Menu("<main>", "<main>",  map_menu = ["layer_add", "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",  
1076                          None,                          None,
1077                            "map_rename",
1078                          "map_projection",                          "map_projection",
1079                          None,                          None,
1080                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1081                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
1082                            "map_full_extent",
1083                            "layer_full_extent",
1084                            "selected_full_extent",
1085                          None,                          None,
1086                          "map_full_extent",                          "map_identify_tool", "map_label_tool",
1087                          None,                          None,
1088                          "map_print"]),                          "toggle_legend",
1089                    Menu("layer", "&Layer",                          None]
1090                         ["layer_fill_color", "layer_transparent_fill",  if wxPlatform == '__WXMSW__':
1091                          "layer_outline_color", "layer_no_outline",      map_menu.append("map_export")
1092    map_menu.append("map_print")
1093    
1094    # the menu structure
1095    main_menu = Menu("<main>", "<main>",
1096                     [Menu("file", _("&File"),
1097                           ["new_session", "open_session", None,
1098                            "save_session", "save_session_as", None,
1099                            "toggle_session_tree", None,
1100                            "exit"]),
1101                      Menu("map", _("&Map"), map_menu),
1102                      Menu("layer", _("&Layer"),
1103                           ["layer_rename", "layer_duplicate",
1104                          None,                          None,
1105                          "layer_raise", "layer_lower",                          "layer_raise", "layer_lower",
1106                          None,                          None,
1107                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1108                          None,                          None,
1109                          "layer_show_table"]),                          "layer_projection",
1110                    Menu("help", "&Help",                          None,
1111                            "layer_show_table",
1112                            "layer_jointable",
1113                            "layer_unjointable",
1114                            None,
1115                            "layer_properties"]),
1116                      Menu("table", _("&Table"),
1117                           ["table_open", "table_close", "table_rename",
1118                           None,
1119                           "table_show",
1120                           None,
1121                           "table_join"]),
1122                      Menu("help", _("&Help"),
1123                         ["help_about"])])                         ["help_about"])])
1124    
1125    # the main toolbar
1126    
1127    main_toolbar = Menu("<toolbar>", "<toolbar>",
1128                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1129                         "map_full_extent",
1130                         "layer_full_extent",
1131                         "selected_full_extent",
1132                         None,
1133                         "map_identify_tool", "map_label_tool"])
1134    
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