/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 20 by bh, Tue Sep 4 16:44:31 2001 UTC revision 1126 by bh, Mon Jun 2 14:15:43 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001 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  import sys, os  __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"
17    #__BuildDate__ = "$Date$"
18    
19    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    from wxPython.lib.dialogs import wxMultipleChoiceDialog
26    
27  import Thuban  import Thuban
28  from Thuban.Model.session import Session  import Thuban.version
29  from Thuban.Model.map import Map  
30  from Thuban.Model.layer import Layer  from Thuban import _
31  from Thuban.Model.color import Color  from Thuban.Model.session import create_empty_session
32  from Thuban.Model.proj import Projection  from Thuban.Model.layer import Layer, RasterLayer
33    
34  import view  import view
35  import tree  import tree
 import proj4dialog  
36  import tableview, identifyview  import tableview, identifyview
37    from Thuban.UI.classifier import Classifier
38    import legend
39    from menu import Menu
40    
41    from context import Context
42    from command import registry, Command, ToolCommand
43    from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION
44    
45    from Thuban.UI.dock import DockFrame
46    from Thuban.UI.join import JoinDialog
47    
48    import resource
49    
50  import main  import projdialog
 from command import registry, Command  
51    
52    
 # the directory where the toolbar icons are stored  
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
53    
54    class MainWindow(DockFrame):
55    
56  class MainWindow(wxFrame):      # Some messages that can be subscribed/unsubscribed directly through
57        # the MapCanvas come in fact from other objects. This is a map to
58        # map those messages to the names of the instance variables they
59        # actually come from. This delegation is implemented in the
60        # Subscribe and unsubscribed methods
61        delegated_messages = {LAYER_SELECTED: "canvas",
62                              SHAPES_SELECTED: "canvas"}
63    
64      def __init__(self, parent, ID):      # Methods delegated to some instance variables. The delegation is
65          wxFrame.__init__(self, parent, ID, 'Thuban',      # implemented in the __getattr__ method.
66                           wxDefaultPosition, wxSize(400, 300))      delegated_methods = {"SelectLayer": "canvas",
67                             "SelectShapes": "canvas",
68                             "SelectedLayer": "canvas",
69                             "SelectedShapes": "canvas",
70                             }
71    
72        def __init__(self, parent, ID, title, application, interactor,
73                     initial_message = None, size = wxSize(-1, -1)):
74            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
75            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
76    
77            self.application = application
78    
79          self.CreateStatusBar()          self.CreateStatusBar()
80          self.SetStatusText("This is the wxPython-based "          if initial_message:
81                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
82    
83          self.identify_view = None          self.identify_view = None
84    
85          self.init_ids()          self.init_ids()
86    
87          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
88            self.SetMenuBar(self.build_menu_bar(main_menu))
         menu = wxMenu()  
         menuBar.Append(menu, "&File");  
         for name in ["new_session", "open_session", None,  
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["map_projection",  
                      None,  
                      "map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool",  
                      None,  
                      "map_full_extent",  
                      None,  
                      "map_print"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Layer");  
         for name in ["layer_add", "layer_remove",  
                      None,  
                      "layer_fill_color", "layer_transparent_fill",  
                      "layer_ourline_color", "layer_no_outline",  
                      None,  
                      "layer_raise", "layer_lower",  
                      None,  
                      "layer_show", "layer_hide",  
                      None,  
                      "layer_show_table"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Help");  
         self.add_menu_command(menu, "help_about")  
89    
90          self.SetMenuBar(menuBar)          # Similarly, create the toolbar from main_toolbar
91            toolbar = self.build_toolbar(main_toolbar)
         # toolbar  
         toolbar = self.CreateToolBar(wxTB_3DBUTTONS)  
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool"]:  
             self.add_toolbar_command(toolbar, name)  
92          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
93          toolbar.Realize()          toolbar.Realize()
94    
95    
96          # Create the map canvas          # Create the map canvas
97          canvas = view.MapCanvas(self, -1)          canvas = view.MapCanvas(self, -1)
98            canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
99            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
100          self.canvas = canvas          self.canvas = canvas
101    
102            self.SetMainWindow(self.canvas)
103    
104            self.SetAutoLayout(True)
105    
106            self.init_dialogs()
107    
108          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
109    
110        def Subscribe(self, channel, *args):
111            """Subscribe a function to a message channel.
112    
113            If channel is one of the delegated messages call the appropriate
114            object's Subscribe method. Otherwise do nothing.
115            """
116            if channel in self.delegated_messages:
117                object = getattr(self, self.delegated_messages[channel])
118                object.Subscribe(channel, *args)
119            else:
120                print "Trying to subscribe to unsupported channel %s" % channel
121    
122        def Unsubscribe(self, channel, *args):
123            """Unsubscribe a function from a message channel.
124    
125            If channel is one of the delegated messages call the appropriate
126            object's Unsubscribe method. Otherwise do nothing.
127            """
128            if channel in self.delegated_messages:
129                object = getattr(self, self.delegated_messages[channel])
130                object.Unsubscribe(channel, *args)
131    
132        def __getattr__(self, attr):
133            """If attr is one of the delegated methods return that method
134    
135            Otherwise raise AttributeError.
136            """
137            if attr in self.delegated_methods:
138                return getattr(getattr(self, self.delegated_methods[attr]), attr)
139            raise AttributeError(attr)
140    
141      def init_ids(self):      def init_ids(self):
142          """Initialize the ids"""          """Initialize the ids"""
143          self.current_id = 6000          self.current_id = 6000
144          self.id_to_name = {}          self.id_to_name = {}
145          self.name_to_id = {}          self.name_to_id = {}
146            self.events_bound = {}
147    
148      def get_id(self, name):      def get_id(self, name):
149          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 123  class MainWindow(wxFrame): Line 156  class MainWindow(wxFrame):
156              self.name_to_id[name] = ID              self.name_to_id[name] = ID
157              self.id_to_name[ID] = name              self.id_to_name[ID] = name
158          return ID          return ID
159            
160        def bind_command_events(self, command, ID):
161            """Bind the necessary events for the given command and ID"""
162            if not self.events_bound.has_key(ID):
163                # the events haven't been bound yet
164                EVT_MENU(self, ID, self.invoke_command)
165                if command.IsDynamic():
166                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
167    
168        def build_menu_bar(self, menudesc):
169            """Build and return the menu bar from the menu description"""
170            menu_bar = wxMenuBar()
171    
172            for item in menudesc.items:
173                # here the items must all be Menu instances themselves
174                menu_bar.Append(self.build_menu(item), item.title)
175    
176            return menu_bar
177    
178        def build_menu(self, menudesc):
179            """Return a wxMenu built from the menu description menudesc"""
180            wxmenu = wxMenu()
181            last = None
182            for item in menudesc.items:
183                if item is None:
184                    # a separator. Only add one if the last item was not a
185                    # separator
186                    if last is not None:
187                        wxmenu.AppendSeparator()
188                elif isinstance(item, Menu):
189                    # a submenu
190                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
191                else:
192                    # must the name the name of a command
193                    self.add_menu_command(wxmenu, item)
194                last = item
195            return wxmenu
196    
197        def build_toolbar(self, toolbardesc):
198            """Build and return the main toolbar window from a toolbar description
199    
200            The parameter should be an instance of the Menu class but it
201            should not contain submenus.
202            """
203            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
204    
205            # set the size of the tools' bitmaps. Not needed on wxGTK, but
206            # on Windows, although it doesn't work very well there. It seems
207            # that only 16x16 icons are really supported on windows.
208            # We probably shouldn't hardwire the bitmap size here.
209            toolbar.SetToolBitmapSize(wxSize(24, 24))
210    
211            for item in toolbardesc.items:
212                if item is None:
213                    toolbar.AddSeparator()
214                else:
215                    # assume it's a string.
216                    self.add_toolbar_command(toolbar, item)
217    
218            return toolbar
219    
220      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
221          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
222    
# Line 137  class MainWindow(wxFrame): Line 230  class MainWindow(wxFrame):
230                  ID = self.get_id(name)                  ID = self.get_id(name)
231                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
232                              command.IsCheckCommand())                              command.IsCheckCommand())
233                  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)  
234              else:              else:
235                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
236    
237      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
238          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 156  class MainWindow(wxFrame): Line 247  class MainWindow(wxFrame):
247              command = registry.Command(name)              command = registry.Command(name)
248              if command is not None:              if command is not None:
249                  ID = self.get_id(name)                  ID = self.get_id(name)
250                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
251                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
252                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
253                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
254                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
255                    self.bind_command_events(command, ID)
256              else:              else:
257                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
258    
259        def Context(self):
260            """Return the context object for a command invoked from this window
261            """
262            return Context(self.application, self.application.Session(), self)
263    
264      def invoke_command(self, event):      def invoke_command(self, event):
265          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
266          if name is not None:          if name is not None:
267              command = registry.Command(name)              command = registry.Command(name)
268              command.Execute(self)              command.Execute(self.Context())
269          else:          else:
270              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
271    
272      def update_command_ui(self, event):      def update_command_ui(self, event):
273          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
274            context = self.Context()
275          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
276          if command is not None:          if command is not None:
277              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
278              event.SetText(command.DynText(self))              event.Enable(sensitive)
279                if command.IsTool() and not sensitive and command.Checked(context):
280                    # When a checked tool command is disabled deselect all
281                    # tools. Otherwise the tool would remain active but it
282                    # might lead to errors if the tools stays active. This
283                    # problem occurred in GREAT-ER and this fixes it, but
284                    # it's not clear to me whether this is really the best
285                    # way to do it (BH, 20021206).
286                    self.canvas.SelectTool(None)
287                event.SetText(command.DynText(context))
288              if command.IsCheckCommand():              if command.IsCheckCommand():
289                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
290    
291      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
292          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
293          and return the result"""          and return the result"""
294          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
295            dlg.CenterOnParent()
296          result = dlg.ShowModal()          result = dlg.ShowModal()
297          dlg.Destroy()          dlg.Destroy()
298          return result          return result
299    
300        def init_dialogs(self):
301            """Initialize the dialog handling"""
302            # The mainwindow maintains a dict mapping names to open
303            # non-modal dialogs. The dialogs are put into this dict when
304            # they're created and removed when they're closed
305            self.dialogs = {}
306    
307        def add_dialog(self, name, dialog):
308            if self.dialogs.has_key(name):
309                raise RuntimeError(_("The Dialog named %s is already open") % name)
310            self.dialogs[name] = dialog
311    
312        def dialog_open(self, name):
313            return self.dialogs.has_key(name)
314    
315        def remove_dialog(self, name):
316            del self.dialogs[name]
317    
318        def get_open_dialog(self, name):
319            return self.dialogs.get(name)
320    
321        def view_position_changed(self):
322            pos = self.canvas.CurrentPosition()
323            if pos is not None:
324                text = "(%10.10g, %10.10g)" % pos
325            else:
326                text = ""
327            self.set_position_text(text)
328    
329        def set_position_text(self, text):
330            """Set the statusbar text showing the current position.
331    
332            By default the text is shown in field 0 of the status bar.
333            Override this method in derived classes to put it into a
334            different field of the statusbar.
335            """
336            self.SetStatusText(text)
337    
338        def save_modified_session(self, can_veto = 1):
339            """If the current session has been modified, ask the user
340            whether to save it and do so if requested. Return the outcome of
341            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
342            dialog wasn't run return wxID_NO.
343    
344            If the can_veto parameter is true (default) the dialog includes
345            a cancel button, otherwise not.
346            """
347            if self.application.session.WasModified():
348                flags = wxYES_NO | wxICON_QUESTION
349                if can_veto:
350                    flags = flags | wxCANCEL
351                result = self.RunMessageBox(_("Exit"),
352                                            _("The session has been modified."
353                                             " Do you want to save it?"),
354                                            flags)
355                if result == wxID_YES:
356                    self.SaveSession()
357            else:
358                result = wxID_NO
359            return result
360    
361        def prepare_new_session(self):
362            for d in self.dialogs.values():
363                if not isinstance(d, tree.SessionTreeView):
364                    d.Close()
365    
366      def NewSession(self):      def NewSession(self):
367          session = Session("")          if self.save_modified_session() != wxID_CANCEL:
368          session.AddMap(Map(""))              self.prepare_new_session()
369          main.app.SetSession(session)              self.application.SetSession(create_empty_session())
370    
371      def OpenSession(self):      def OpenSession(self):
372          dlg = wxFileDialog(self, "Select a session file", ".", "",          if self.save_modified_session() != wxID_CANCEL:
373                             "*.session", wxOPEN)              dlg = wxFileDialog(self, _("Open Session"), ".", "",
374          if dlg.ShowModal() == wxID_OK:                                 "Thuban Session File (*.thuban)|*.thuban",
375              main.app.OpenSession(dlg.GetPath())                                 wxOPEN)
376          dlg.Destroy()              if dlg.ShowModal() == wxID_OK:
377                    self.prepare_new_session()
378                    self.application.OpenSession(dlg.GetPath())
379                dlg.Destroy()
380    
381      def SaveSession(self):      def SaveSession(self):
382          main.app.SaveSession()          if self.application.session.filename == None:
383                self.SaveSessionAs()
384            else:
385                self.application.SaveSession()
386    
387      def SaveSessionAs(self):      def SaveSessionAs(self):
388          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
389                             "*.session", wxOPEN)                             "Thuban Session File (*.thuban)|*.thuban",
390                               wxSAVE|wxOVERWRITE_PROMPT)
391          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
392              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
393              main.app.SaveSession()              self.application.SaveSession()
394          dlg.Destroy()          dlg.Destroy()
395    
396      def Exit(self):      def Exit(self):
397          self.Close(false)          self.Close(False)
398    
399      def OnClose(self, event):      def OnClose(self, event):
400          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
401          if main.app.session.WasModified():          if result == wxID_CANCEL:
             flags = wxYES_NO | wxICON_QUESTION  
             if event.CanVeto():  
                 flags = flags | wxCANCEL  
             result = self.RunMessageBox("Exit",  
                                         ("The session has been modified."  
                                          " Do you want to save it?"),  
                                         flags)  
             if result == wxID_YES:  
                 self.SaveSession()  
             elif result == wxID_CANCEL:  
                 veto = 1  
   
         if veto:  
402              event.Veto()              event.Veto()
403          else:          else:
404                # FIXME: it would be better to tie the unsubscription to
405                # wx's destroy event, but that isn't implemented for wxGTK
406                # yet.
407                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
408                DockFrame.OnClose(self, event)
409                for dlg in self.dialogs.values():
410                    dlg.Destroy()
411                self.canvas.Destroy()
412              self.Destroy()              self.Destroy()
413    
414      def SetMap(self, map):      def SetMap(self, map):
415          self.canvas.SetMap(map)          self.canvas.SetMap(map)
416            self.__SetTitle(map.Title())
417    
418            dialog = self.FindRegisteredDock("legend")
419            if dialog is not None:
420                dialog.GetPanel().SetMap(self.Map())
421    
422        def Map(self):
423            """Return the map displayed by this mainwindow"""
424    
425            return self.canvas.Map()
426    
427        def ToggleSessionTree(self):
428            """If the session tree is shown close it otherwise create a new tree"""
429            name = "session_tree"
430            dialog = self.get_open_dialog(name)
431            if dialog is None:
432                dialog = tree.SessionTreeView(self, self.application, name)
433                self.add_dialog(name, dialog)
434                dialog.Show(True)
435            else:
436                dialog.Close()
437    
438        def SessionTreeShown(self):
439            """Return true iff the session tree is currently shown"""
440            return self.get_open_dialog("session_tree") is not None
441    
442      def About(self):      def About(self):
443          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
444                             ("Thuban is a program for\n"                             _("Thuban %s\n"
445                                #"Build Date: %s\n"
446                                "using:\n"
447                                "  %s\n"
448                                "  %s\n\n"
449                                "Thuban is a program for\n"
450                              "exploring geographic data.\n"                              "exploring geographic data.\n"
451                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
452                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
453                                % (Thuban.version.longversion,
454                                   "wxPython %s" % wxPython_version,
455                                   "Python %d.%d.%d" % sys.version_info[:3]
456                                  )),
457    #                           % __ThubanVersion__), #__BuildDate__)),
458                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
459    
460      def AddLayer(self):      def AddLayer(self):
461          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
462                             wxOPEN)                             wxOPEN)
463          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
464              filename = dlg.GetPath()              filename = dlg.GetPath()
465              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
466              map = self.canvas.Map()              map = self.canvas.Map()
467              has_layers = map.HasLayers()              has_layers = map.HasLayers()
468              try:              try:
469                    store = self.application.Session().OpenShapefile(filename)
470                except IOError:
471                    # the layer couldn't be opened
472                    self.RunMessageBox(_("Add Layer"),
473                                       _("Can't open the file '%s'.") % filename)
474                else:
475                    layer = Layer(title, store)
476                  map.AddLayer(layer)                  map.AddLayer(layer)
477                    if not has_layers:
478                        # if we're adding a layer to an empty map, fit the
479                        # new map to the window
480                        self.canvas.FitMapToWindow()
481            dlg.Destroy()
482    
483        def AddRasterLayer(self):
484            dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",
485                               wxOPEN)
486            if dlg.ShowModal() == wxID_OK:
487                filename = dlg.GetPath()
488                title = os.path.splitext(os.path.basename(filename))[0]
489                map = self.canvas.Map()
490                has_layers = map.HasLayers()
491                try:
492                    layer = RasterLayer(title, filename)
493              except IOError:              except IOError:
494                  # the layer couldn't be opened                  # the layer couldn't be opened
495                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
496                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
497              else:              else:
498                    map.AddLayer(layer)
499                  if not has_layers:                  if not has_layers:
500                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
501                      # new map to the window                      # new map to the window
502                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
503          dlg.Destroy()          dlg.Destroy()
# Line 273  class MainWindow(wxFrame): Line 507  class MainWindow(wxFrame):
507          if layer is not None:          if layer is not None:
508              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
509    
510        def CanRemoveLayer(self):
511            """Return true if the currently selected layer can be deleted.
512    
513            If no layer is selected return False.
514    
515            The return value of this method determines whether the remove
516            layer command is sensitive in menu.
517            """
518            layer = self.current_layer()
519            if layer is not None:
520                return self.canvas.Map().CanRemoveLayer(layer)
521            return False
522    
523      def RaiseLayer(self):      def RaiseLayer(self):
524          layer = self.current_layer()          layer = self.current_layer()
525          if layer is not None:          if layer is not None:
526              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
527            
528      def LowerLayer(self):      def LowerLayer(self):
529          layer = self.current_layer()          layer = self.current_layer()
530          if layer is not None:          if layer is not None:
# Line 288  class MainWindow(wxFrame): Line 535  class MainWindow(wxFrame):
535    
536          If no layer is selected, return None          If no layer is selected, return None
537          """          """
538          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
539    
540      def has_selected_layer(self):      def has_selected_layer(self):
541          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
542          tree = main.app.tree.tree          return self.canvas.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
543    
544      def choose_color(self):      def has_selected_shapes(self):
545          """Run the color selection dialog and return the selected color.          """Return true if a shape is currently selected"""
546            return self.canvas.HasSelectedShapes()
547    
548          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):  
549          layer = self.current_layer()          layer = self.current_layer()
550          if layer is not None:          if layer is not None:
551              color = self.choose_color()              layer.SetVisible(0)
             if color is not None:  
                 layer.SetFill(color)  
552    
553      def LayerTransparentFill(self):      def ShowLayer(self):
554          layer = self.current_layer()          layer = self.current_layer()
555          if layer is not None:          if layer is not None:
556              layer.SetFill(None)              layer.SetVisible(1)
557    
558      def LayerOutlineColor(self):      def DuplicateLayer(self):
559            """Ceate a new layer above the selected layer with the same shapestore
560            """
561          layer = self.current_layer()          layer = self.current_layer()
562          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
563              color = self.choose_color()              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
564              if color is not None:                                layer.ShapeStore(),
565                  layer.SetStroke(color)                                projection = layer.GetProjection())
566                new_classification = copy.deepcopy(layer.GetClassification())
567                new_layer.SetClassification(new_classification)
568                self.Map().AddLayer(new_layer)
569    
570      def LayerNoOutline(self):      def CanDuplicateLayer(self):
571            """Return whether the DuplicateLayer method can create a duplicate"""
572          layer = self.current_layer()          layer = self.current_layer()
573          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetStroke(None)  
574    
575      def HideLayer(self):      def LayerShowTable(self):
576          layer = self.current_layer()          layer = self.current_layer()
577          if layer is not None:          if layer is not None:
578              layer.SetVisible(0)              table = layer.table
579                        name = "table_view" + str(id(table))
580      def ShowLayer(self):              dialog = self.get_open_dialog(name)
581                if dialog is None:
582                    dialog = tableview.LayerTableFrame(self, name,
583                                             _("Layer Table: %s") % layer.Title(),
584                                             layer, table)
585                    self.add_dialog(name, dialog)
586                    dialog.Show(True)
587                else:
588                    # FIXME: bring dialog to front here
589                    pass
590    
591        def MapProjection(self):
592    
593            name = "map_projection"
594            dialog = self.get_open_dialog(name)
595    
596            if dialog is None:
597                map = self.canvas.Map()
598                dialog = projdialog.ProjFrame(self, name,
599                         _("Map Projection: %s") % map.Title(), map)
600                self.add_dialog(name, dialog)
601                dialog.Show()
602            dialog.Raise()
603    
604        def LayerProjection(self):
605    
606          layer = self.current_layer()          layer = self.current_layer()
         if layer is not None:  
             layer.SetVisible(1)  
607    
608      def LayerShowTable(self):          name = "layer_projection" + str(id(layer))
609            dialog = self.get_open_dialog(name)
610    
611            if dialog is None:
612                map = self.canvas.Map()
613                dialog = projdialog.ProjFrame(self, name,
614                         _("Layer Projection: %s") % layer.Title(), layer)
615                self.add_dialog(name, dialog)
616                dialog.Show()
617            dialog.Raise()
618    
619        def LayerEditProperties(self):
620    
621            #
622            # the menu option for this should only be available if there
623            # is a current layer, so we don't need to check if the
624            # current layer is None
625            #
626    
627          layer = self.current_layer()          layer = self.current_layer()
628            self.OpenLayerProperties(layer)
629    
630        def OpenLayerProperties(self, layer, group = None):
631            name = "layer_properties" + str(id(layer))
632            dialog = self.get_open_dialog(name)
633    
634            if dialog is None:
635                dialog = Classifier(self, name, layer, group)
636                self.add_dialog(name, dialog)
637                dialog.Show()
638            dialog.Raise()
639    
640        def LayerJoinTable(self):
641            layer = self.canvas.SelectedLayer()
642          if layer is not None:          if layer is not None:
643              tv = tableview.TableFrame(self, layer.table)              dlg = JoinDialog(self, _("Join Layer with Table"),
644              tv.Show(true)                               self.application.session,
645                                 layer = layer)
646                dlg.ShowModal()
647    
648      def Projection(self):      def LayerUnjoinTable(self):
649          map = self.canvas.Map()          layer = self.canvas.SelectedLayer()
650          proj = map.projection          if layer is not None:
651          if proj is None:              orig_store = layer.ShapeStore().OrigShapeStore()
652              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)              if orig_store:
653          else:                  layer.SetShapeStore(orig_store)
654              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)  
655          if proj4Dlg.ShowModal() == wxID_OK:      def ShowLegend(self):
656              params = proj4Dlg.GetParams()          if not self.LegendShown():
657              if params is not None:              self.ToggleLegend()
658                  proj = Projection(params)  
659        def ToggleLegend(self):
660            """Show the legend if it's not shown otherwise hide it again"""
661            name = "legend"
662            dialog = self.FindRegisteredDock(name)
663    
664            if dialog is None:
665                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
666                legend.LegendPanel(dialog, None, self)
667                dialog.Dock()
668                dialog.GetPanel().SetMap(self.Map())
669                dialog.Show()
670            else:
671                dialog.Show(not dialog.IsShown())
672    
673            self.canvas.FitMapToWindow()
674    
675        def LegendShown(self):
676            """Return true iff the legend is currently open"""
677            dialog = self.FindRegisteredDock("legend")
678            return dialog is not None and dialog.IsShown()
679    
680        def TableOpen(self):
681            dlg = wxFileDialog(self, _("Open Table"), ".", "",
682                               _("DBF Files (*.dbf)") + "|*.dbf|" +
683                               #_("CSV Files (*.csv)") + "|*.csv|" +
684                               _("All Files (*.*)") + "|*.*",
685                               wxOPEN)
686            if dlg.ShowModal() == wxID_OK:
687                filename = dlg.GetPath()
688                dlg.Destroy()
689                try:
690                    table = self.application.session.OpenTableFile(filename)
691                except IOError:
692                    # the layer couldn't be opened
693                    self.RunMessageBox(_("Open Table"),
694                                       _("Can't open the file '%s'.") % filename)
695              else:              else:
696                  proj = None                  self.ShowTableView(table)
697              map.SetProjection(proj)  
698          proj4Dlg.Destroy()      def TableClose(self):
699            tables = self.application.session.UnreferencedTables()
700    
701            lst = [(t.Title(), t) for t in tables]
702            lst.sort()
703            titles = [i[0] for i in lst]
704            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
705                                         _("Close Table"), titles,
706                                         size = (400, 300),
707                                         style = wxDEFAULT_DIALOG_STYLE |
708                                                 wxRESIZE_BORDER)
709            if dlg.ShowModal() == wxID_OK:
710                for i in dlg.GetValue():
711                    self.application.session.RemoveTable(lst[i][1])
712    
713    
714        def TableShow(self):
715            """Offer a multi-selection dialog for tables to be displayed
716    
717            The windows for the selected tables are opened or brought to
718            the front.
719            """
720            tables = self.application.session.Tables()
721    
722            lst = [(t.Title(), t) for t in tables]
723            lst.sort()
724            titles = [i[0] for i in lst]
725            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
726                                         _("Show Table"), titles,
727                                         size = (400,300),
728                                         style = wxDEFAULT_DIALOG_STYLE |
729                                                 wxRESIZE_BORDER)
730            if (dlg.ShowModal() == wxID_OK):
731                for i in dlg.GetValue():
732                    # XXX: if the table belongs to a layer, open a
733                    # LayerTableFrame instead of QueryTableFrame
734                    self.ShowTableView(lst[i][1])
735    
736        def TableJoin(self):
737            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
738            dlg.ShowModal()
739    
740        def ShowTableView(self, table):
741            """Open a table view for the table and optionally"""
742            name = "table_view%d" % id(table)
743            dialog = self.get_open_dialog(name)
744            if dialog is None:
745                dialog = tableview.QueryTableFrame(self, name,
746                                                   _("Table: %s") % table.Title(),
747                                                   table)
748                self.add_dialog(name, dialog)
749                dialog.Show(True)
750            # FIXME: else bring dialog to front
751    
752        def TableRename(self):
753            """Let the user rename a table"""
754    
755            # First, let the user select a table
756            tables = self.application.session.Tables()
757            lst = [(t.Title(), t) for t in tables]
758            lst.sort()
759            titles = [i[0] for i in lst]
760            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
761                                         _("Rename Table"), titles,
762                                         size = (400,300),
763                                         style = wxDEFAULT_DIALOG_STYLE |
764                                                 wxRESIZE_BORDER)
765            if (dlg.ShowModal() == wxID_OK):
766                to_rename = [lst[i][1] for i in dlg.GetValue()]
767                dlg.Destroy()
768            else:
769                to_rename = []
770    
771            # Second, let the user rename the layers
772            for table in to_rename:
773                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
774                                        table.Title())
775                try:
776                    if dlg.ShowModal() == wxID_OK:
777                        title = dlg.GetValue()
778                        if title != "":
779                            table.SetTitle(title)
780    
781                            # Make sure the session is marked as modified.
782                            # FIXME: This should be handled automatically,
783                            # but that requires more changes to the tables
784                            # than I have time for currently.
785                            self.application.session.changed()
786                finally:
787                    dlg.Destroy()
788    
789    
790      def ZoomInTool(self):      def ZoomInTool(self):
791          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 382  class MainWindow(wxFrame): Line 797  class MainWindow(wxFrame):
797          self.canvas.PanTool()          self.canvas.PanTool()
798    
799      def IdentifyTool(self):      def IdentifyTool(self):
         if self.identify_view is None:  
             self.identify_view = identifyview.IdentifyView(self, main.app)  
             self.identify_view.Show(true)  
800          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
801            self.identify_view_on_demand(None, None)
802    
803      def LabelTool(self):      def LabelTool(self):
804          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 393  class MainWindow(wxFrame): Line 806  class MainWindow(wxFrame):
806      def FullExtent(self):      def FullExtent(self):
807          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
808    
809        def FullLayerExtent(self):
810            self.canvas.FitLayerToWindow(self.current_layer())
811    
812        def FullSelectionExtent(self):
813            self.canvas.FitSelectedToWindow()
814    
815        def ExportMap(self):
816            self.canvas.Export()
817    
818      def PrintMap(self):      def PrintMap(self):
819          self.canvas.Print()          self.canvas.Print()
820    
821        def RenameMap(self):
822            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
823                                    self.Map().Title())
824            if dlg.ShowModal() == wxID_OK:
825                title = dlg.GetValue()
826                if title != "":
827                    self.Map().SetTitle(title)
828                    self.__SetTitle(title)
829    
830            dlg.Destroy()
831    
832        def RenameLayer(self):
833            """Let the user rename the currently selected layer"""
834            layer = self.current_layer()
835            if layer is not None:
836                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
837                                        layer.Title())
838                try:
839                    if dlg.ShowModal() == wxID_OK:
840                        title = dlg.GetValue()
841                        if title != "":
842                            layer.SetTitle(title)
843                finally:
844                    dlg.Destroy()
845    
846        def identify_view_on_demand(self, layer, shapes):
847            """Subscribed to the canvas' SHAPES_SELECTED message
848    
849            If the current tool is the identify tool, at least one shape is
850            selected and the identify dialog is not shown, show the dialog.
851            """
852            # If the selection has become empty we don't need to do
853            # anything. Otherwise it could happen that the dialog was popped
854            # up when the selection became empty, e.g. when a new selection
855            # is opened while the identify tool is active and dialog had
856            # been closed
857            if not shapes:
858                return
859    
860            name = "identify_view"
861            if self.canvas.CurrentTool() == "IdentifyTool":
862                if not self.dialog_open(name):
863                    dialog = identifyview.IdentifyView(self, name)
864                    self.add_dialog(name, dialog)
865                    dialog.Show(True)
866                else:
867                    # FIXME: bring dialog to front?
868                    pass
869    
870        def __SetTitle(self, title):
871            self.SetTitle("Thuban - " + title)
872    
873  #  #
874  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 404  class MainWindow(wxFrame): Line 877  class MainWindow(wxFrame):
877    
878  # Helper functions to define common command implementations  # Helper functions to define common command implementations
879  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
880      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
881      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
882    
883  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
884      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
885        """Add a command implemented by a method of the mainwindow object"""
886      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
887                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
888                             sensitive = sensitive, checked = checked))
889    
890    def make_check_current_tool(toolname):
891        """Return a function that tests if the currently active tool is toolname
892    
893        The returned function can be called with the context and returns
894        true iff the currently active tool's name is toolname. It's directly
895        usable as the 'checked' callback of a command.
896        """
897        def check_current_tool(context, name=toolname):
898            return context.mainwindow.canvas.CurrentTool() == name
899        return check_current_tool
900    
901  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
902                    icon = ""):                    icon = "", sensitive = None):
903      """Add a tool command"""      """Add a tool command"""
904      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
905          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
906      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
907                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
908    
909  def _has_selected_layer(context):  def _has_selected_layer(context):
910      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
911      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
912    
913    def _has_selected_shapes(context):
914        """Return true if a layer is selected in the context"""
915        return context.mainwindow.has_selected_shapes()
916    
917    def _can_remove_layer(context):
918        return context.mainwindow.CanRemoveLayer()
919    
920    def _has_tree_window_shown(context):
921        """Return true if the tree window is shown"""
922        return context.mainwindow.SessionTreeShown()
923    
924    def _has_visible_map(context):
925        """Return true iff theres a visible map in the mainwindow.
926    
927        A visible map is a map with at least one visible layer."""
928        map = context.mainwindow.Map()
929        if map is not None:
930            for layer in map.Layers():
931                if layer.Visible():
932                    return 1
933        return 0
934    
935    def _has_legend_shown(context):
936        """Return true if the legend window is shown"""
937        return context.mainwindow.LegendShown()
938    
939    
940  # File menu  # File menu
941  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
942  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session..."), "OpenSession")
943  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
944  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs")
945  _method_command("exit", "&Exit", "Exit")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
946                    checked = _has_tree_window_shown)
947    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
948                    checked = _has_legend_shown)
949    _method_command("exit", _("E&xit"), "Exit")
950    
951  # Help menu  # Help menu
952  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About")
953    
954    
955  # Map menu  # Map menu
956  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection")
957    
958  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
959                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
960  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
961                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
962  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
963                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
964  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
965                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
966  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
967                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
968  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
969  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
970                  sensitive = _has_visible_map)
971    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
972                  helptext = _("Add/Remove labels"), icon = "label",
973                  sensitive = _has_visible_map)
974    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
975                   helptext = _("Full Extent"), icon = "fullextent",
976                  sensitive = _has_visible_map)
977    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
978                   helptext = _("Full Layer Extent"), icon = "fulllayerextent",
979                  sensitive = _has_selected_layer)
980    _method_command("selected_full_extent", _("&Full selection extent"), "FullSelectionExtent",
981                   helptext = _("Full Selection Extent"), icon = "fullselextent",
982                  sensitive = _has_selected_shapes)
983    _method_command("map_export", _("E&xport"), "ExportMap",
984                        helptext = _("Export the map to file"))
985    _method_command("map_print", _("Prin&t"), "PrintMap",
986                    helptext = _("Print the map"))
987    _method_command("map_rename", _("&Rename..."), "RenameMap",
988                    helptext = _("Rename the map"))
989    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
990                    helptext = _("Add a new layer to active map"))
991    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
992                    helptext = _("Add a new image layer to active map"))
993    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
994                    helptext = _("Remove selected layer(s)"),
995                    sensitive = _can_remove_layer)
996    
997  # Layer menu  # Layer menu
998  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
                 helptext = "Add a new layer to active map")  
 _method_command("layer_remove", "&Remove", "RemoveLayer",  
                 helptext = "Remove selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  
                 helptext = "Set the fill color of selected layer(s)",  
999                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1000  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1001                  "LayerTransparentFill",                  helptext = _("Duplicate selected layer(s)"),
1002                  helptext = "Do not fill the selected layer(s)",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1003    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1004                    helptext = _("Rename selected layer"),
1005                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1006  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1007                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Raise selected layer(s)"),
1008                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1009  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1010                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Lower selected layer(s)"),
1011                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1012  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1013                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
1014                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1015  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1016                  helptext = "Lower selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
1017                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1018  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1019                  helptext = "Make selected layer(s) visible",                  helptext = _("Show the selected layer's table"),
1020                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1021  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
                 helptext = "Make selected layer(s) unvisible",  
1022                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1023  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
                 helptext = "Show the selected layer's table",  
1024                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1025    
1026    def _can_unjoin(context):
1027        """Return whether the Layer/Unjoin command can be executed.
1028    
1029        This is the case if a layer is selected and that layer has a
1030        shapestore that has an original shapestore.
1031        """
1032        layer = context.mainwindow.SelectedLayer()
1033        if layer is None:
1034            return 0
1035        getstore = getattr(layer, "ShapeStore", None)
1036        if getstore is not None:
1037            return getstore().OrigShapeStore() is not None
1038        else:
1039            return 0
1040    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1041                    sensitive = _can_unjoin)
1042    
1043    
1044    def _has_tables(context):
1045        return bool(context.session.Tables())
1046    
1047    # Table menu
1048    _method_command("table_open", _("&Open..."), "TableOpen")
1049    _method_command("table_close", _("&Close"), "TableClose",
1050           sensitive = lambda context: bool(context.session.UnreferencedTables()))
1051    _method_command("table_rename", _("&Rename..."), "TableRename",
1052                    sensitive = _has_tables)
1053    _method_command("table_show", _("&Show"), "TableShow",
1054                    sensitive = _has_tables)
1055    _method_command("table_join", _("&Join..."), "TableJoin",
1056                    sensitive = _has_tables)
1057    
1058    #  Export only under Windows ...
1059    map_menu = ["layer_add", "rasterlayer_add", "layer_remove", "map_rename",
1060                            None,
1061                            "map_projection",
1062                            None,
1063                            "map_zoom_in_tool", "map_zoom_out_tool",
1064                            "map_pan_tool",
1065                            "map_full_extent",
1066                            "layer_full_extent",
1067                            "selected_full_extent",
1068                            None,
1069                            "map_identify_tool", "map_label_tool",
1070                            None,
1071                            "toggle_legend",
1072                            None]
1073    if wxPlatform == '__WXMSW__':
1074        map_menu.append("map_export")
1075    map_menu.append("map_print")
1076    
1077    # the menu structure
1078    main_menu = Menu("<main>", "<main>",
1079                     [Menu("file", _("&File"),
1080                           ["new_session", "open_session", None,
1081                            "save_session", "save_session_as", None,
1082                            "toggle_session_tree", None,
1083                            "exit"]),
1084                      Menu("map", _("&Map"), map_menu),
1085                      Menu("layer", _("&Layer"),
1086                           ["layer_rename", "layer_duplicate",
1087                            None,
1088                            "layer_raise", "layer_lower",
1089                            None,
1090                            "layer_show", "layer_hide",
1091                            None,
1092                            "layer_projection",
1093                            None,
1094                            "layer_show_table",
1095                            "layer_jointable",
1096                            "layer_unjointable",
1097                            None,
1098                            "layer_properties"]),
1099                      Menu("table", _("&Table"),
1100                           ["table_open", "table_close", "table_rename",
1101                           None,
1102                           "table_show",
1103                           None,
1104                           "table_join"]),
1105                      Menu("help", _("&Help"),
1106                           ["help_about"])])
1107    
1108    # the main toolbar
1109    
1110    main_toolbar = Menu("<toolbar>", "<toolbar>",
1111                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1112                         "map_full_extent",
1113                         "layer_full_extent",
1114                         "selected_full_extent",
1115                         None,
1116                         "map_identify_tool", "map_label_tool"])
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