/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 31 by bh, Thu Sep 6 13:32:39 2001 UTC revision 2102 by bh, Thu Mar 11 21:04:30 2004 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003, 2004 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
5    # Frank Koormann <[email protected]>
6  #  #
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 11  The main window Line 12  The main window
12  """  """
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    # $Source$
16    # $Id$
17    
18  import sys, os  import os
19    import copy
20    
21  from wxPython.wx import *  from wxPython.wx import *
22    
23  import Thuban  import Thuban
24  from Thuban.Model.session import Session  
25  from Thuban.Model.map import Map  from Thuban import _
26  from Thuban.Model.layer import Layer  from Thuban.Model.messages import TITLE_CHANGED
27  from Thuban.Model.color import Color  from Thuban.Model.session import create_empty_session
28  from Thuban.Model.proj import Projection  from Thuban.Model.layer import Layer, RasterLayer
29    from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
30    # XXX: replace this by
31    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
32    # when Thuban does not support wxPython 2.4.0 any more.
33    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
34    
35  import view  import view
36  import tree  import tree
 import proj4dialog  
37  import tableview, identifyview  import tableview, identifyview
38    from Thuban.UI.classifier import Classifier
39    import legend
40    from menu import Menu
41    
42    from context import Context
43    from command import registry, Command, ToolCommand
44    from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
45         MAP_REPLACED
46    from about import About
47    
48    from Thuban.UI.dock import DockFrame
49    from Thuban.UI.join import JoinDialog
50    from Thuban.UI.dbdialog import DBFrame, DBDialog, ChooseDBTableDialog
51    import resource
52    import Thuban.Model.resource
53    
54    import projdialog
55    
56    
57    class MainWindow(DockFrame):
58    
59        # Some messages that can be subscribed/unsubscribed directly through
60        # the MapCanvas come in fact from other objects. This is a map to
61        # map those messages to the names of the instance variables they
62        # actually come from. This delegation is implemented in the
63        # Subscribe and unsubscribed methods
64        delegated_messages = {LAYER_SELECTED: "canvas",
65                              SHAPES_SELECTED: "canvas",
66                              MAP_REPLACED: "canvas"}
67    
68        # Methods delegated to some instance variables. The delegation is
69        # implemented in the __getattr__ method.
70        delegated_methods = {"SelectLayer": "canvas",
71                             "SelectShapes": "canvas",
72                             "SelectedLayer": "canvas",
73                             "SelectedShapes": "canvas",
74                             }
75    
76        def __init__(self, parent, ID, title, application, interactor,
77                     initial_message = None, size = wxSize(-1, -1)):
78            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
79            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
80    
81  import main          self.application = application
 from command import registry, Command  
 from messages import SELECTED_SHAPE  
   
   
 # the directory where the toolbar icons are stored  
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
   
   
 class MainWindow(wxFrame):  
   
     def __init__(self, parent, ID, interactor):  
         wxFrame.__init__(self, parent, ID, 'Thuban',  
                          wxDefaultPosition, wxSize(400, 300))  
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          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
92            self.SetMenuBar(self.build_menu_bar(main_menu))
93    
94          menu = wxMenu()          # Similarly, create the toolbar from main_toolbar
95          menuBar.Append(menu, "&File");          toolbar = self.build_toolbar(main_toolbar)
         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")  
   
         self.SetMenuBar(menuBar)  
   
         # 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)  
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)
103            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
104          self.canvas = canvas          self.canvas = canvas
105            self.canvas.Subscribe(TITLE_CHANGED, self.title_changed)
106    
107            self.SetMainWindow(self.canvas)
108    
109            self.SetAutoLayout(True)
110    
111          self.init_dialogs()          self.init_dialogs()
112    
113          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
114    
115          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
116    
117        def Subscribe(self, channel, *args):
118            """Subscribe a function to a message channel.
119    
120            If channel is one of the delegated messages call the appropriate
121            object's Subscribe method. Otherwise do nothing.
122            """
123            if channel in self.delegated_messages:
124                object = getattr(self, self.delegated_messages[channel])
125                object.Subscribe(channel, *args)
126            else:
127                print "Trying to subscribe to unsupported channel %s" % channel
128    
129        def Unsubscribe(self, channel, *args):
130            """Unsubscribe a function from a message channel.
131    
132            If channel is one of the delegated messages call the appropriate
133            object's Unsubscribe method. Otherwise do nothing.
134            """
135            if channel in self.delegated_messages:
136                object = getattr(self, self.delegated_messages[channel])
137                try:
138                    object.Unsubscribe(channel, *args)
139                except wxPyDeadObjectError:
140                    # The object was a wxObject and has already been
141                    # destroyed. Hopefully it has unsubscribed all its
142                    # subscribers already so that it's OK if we do nothing
143                    # here
144                    pass
145    
146        def __getattr__(self, attr):
147            """If attr is one of the delegated methods return that method
148    
149            Otherwise raise AttributeError.
150            """
151            if attr in self.delegated_methods:
152                return getattr(getattr(self, self.delegated_methods[attr]), attr)
153            raise AttributeError(attr)
154    
155      def init_ids(self):      def init_ids(self):
156          """Initialize the ids"""          """Initialize the ids"""
157          self.current_id = 6000          self.current_id = 6000
158          self.id_to_name = {}          self.id_to_name = {}
159          self.name_to_id = {}          self.name_to_id = {}
160            self.events_bound = {}
161    
162      def get_id(self, name):      def get_id(self, name):
163          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 128  class MainWindow(wxFrame): Line 170  class MainWindow(wxFrame):
170              self.name_to_id[name] = ID              self.name_to_id[name] = ID
171              self.id_to_name[ID] = name              self.id_to_name[ID] = name
172          return ID          return ID
173            
174        def bind_command_events(self, command, ID):
175            """Bind the necessary events for the given command and ID"""
176            if not self.events_bound.has_key(ID):
177                # the events haven't been bound yet
178                EVT_MENU(self, ID, self.invoke_command)
179                if command.IsDynamic():
180                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
181    
182        def build_menu_bar(self, menudesc):
183            """Build and return the menu bar from the menu description"""
184            menu_bar = wxMenuBar()
185    
186            for item in menudesc.items:
187                # here the items must all be Menu instances themselves
188                menu_bar.Append(self.build_menu(item), item.title)
189    
190            return menu_bar
191    
192        def build_menu(self, menudesc):
193            """Return a wxMenu built from the menu description menudesc"""
194            wxmenu = wxMenu()
195            last = None
196            for item in menudesc.items:
197                if item is None:
198                    # a separator. Only add one if the last item was not a
199                    # separator
200                    if last is not None:
201                        wxmenu.AppendSeparator()
202                elif isinstance(item, Menu):
203                    # a submenu
204                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
205                else:
206                    # must the name the name of a command
207                    self.add_menu_command(wxmenu, item)
208                last = item
209            return wxmenu
210    
211        def build_toolbar(self, toolbardesc):
212            """Build and return the main toolbar window from a toolbar description
213    
214            The parameter should be an instance of the Menu class but it
215            should not contain submenus.
216            """
217            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
218    
219            # set the size of the tools' bitmaps. Not needed on wxGTK, but
220            # on Windows, although it doesn't work very well there. It seems
221            # that only 16x16 icons are really supported on windows.
222            # We probably shouldn't hardwire the bitmap size here.
223            toolbar.SetToolBitmapSize(wxSize(24, 24))
224    
225            for item in toolbardesc.items:
226                if item is None:
227                    toolbar.AddSeparator()
228                else:
229                    # assume it's a string.
230                    self.add_toolbar_command(toolbar, item)
231    
232            return toolbar
233    
234      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
235          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
236    
# Line 142  class MainWindow(wxFrame): Line 244  class MainWindow(wxFrame):
244                  ID = self.get_id(name)                  ID = self.get_id(name)
245                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
246                              command.IsCheckCommand())                              command.IsCheckCommand())
247                  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)  
248              else:              else:
249                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
250    
251      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
252          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 161  class MainWindow(wxFrame): Line 261  class MainWindow(wxFrame):
261              command = registry.Command(name)              command = registry.Command(name)
262              if command is not None:              if command is not None:
263                  ID = self.get_id(name)                  ID = self.get_id(name)
264                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
265                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
266                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
267                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
268                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
269                    self.bind_command_events(command, ID)
270              else:              else:
271                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
272    
273        def Context(self):
274            """Return the context object for a command invoked from this window
275            """
276            return Context(self.application, self.application.Session(), self)
277    
278      def invoke_command(self, event):      def invoke_command(self, event):
279          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
280          if name is not None:          if name is not None:
281              command = registry.Command(name)              command = registry.Command(name)
282              command.Execute(self)              command.Execute(self.Context())
283          else:          else:
284              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
285    
286      def update_command_ui(self, event):      def update_command_ui(self, event):
287          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
288            context = self.Context()
289          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
290          if command is not None:          if command is not None:
291              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
292              event.SetText(command.DynText(self))              event.Enable(sensitive)
293                if command.IsTool() and not sensitive and command.Checked(context):
294                    # When a checked tool command is disabled deselect all
295                    # tools. Otherwise the tool would remain active but it
296                    # might lead to errors if the tools stays active. This
297                    # problem occurred in GREAT-ER and this fixes it, but
298                    # it's not clear to me whether this is really the best
299                    # way to do it (BH, 20021206).
300                    self.canvas.SelectTool(None)
301                event.SetText(command.DynText(context))
302              if command.IsCheckCommand():              if command.IsCheckCommand():
303                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
304    
305      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
306          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
307          and return the result"""          and return the result"""
308          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
309            dlg.CenterOnParent()
310          result = dlg.ShowModal()          result = dlg.ShowModal()
311          dlg.Destroy()          dlg.Destroy()
312          return result          return result
# Line 203  class MainWindow(wxFrame): Line 320  class MainWindow(wxFrame):
320    
321      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
322          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
323              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
324          self.dialogs[name] = dialog          self.dialogs[name] = dialog
325    
326      def dialog_open(self, name):      def dialog_open(self, name):
# Line 215  class MainWindow(wxFrame): Line 332  class MainWindow(wxFrame):
332      def get_open_dialog(self, name):      def get_open_dialog(self, name):
333          return self.dialogs.get(name)          return self.dialogs.get(name)
334    
335        def view_position_changed(self):
336            pos = self.canvas.CurrentPosition()
337            if pos is not None:
338                text = "(%10.10g, %10.10g)" % pos
339            else:
340                text = ""
341            self.set_position_text(text)
342    
343        def set_position_text(self, text):
344            """Set the statusbar text showing the current position.
345    
346            By default the text is shown in field 0 of the status bar.
347            Override this method in derived classes to put it into a
348            different field of the statusbar.
349            """
350            self.SetStatusText(text)
351    
352        def save_modified_session(self, can_veto = 1):
353            """If the current session has been modified, ask the user
354            whether to save it and do so if requested. Return the outcome of
355            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
356            dialog wasn't run return wxID_NO.
357    
358            If the can_veto parameter is true (default) the dialog includes
359            a cancel button, otherwise not.
360            """
361            if self.application.session.WasModified():
362                flags = wxYES_NO | wxICON_QUESTION
363                if can_veto:
364                    flags = flags | wxCANCEL
365                result = self.RunMessageBox(_("Exit"),
366                                            _("The session has been modified."
367                                             " Do you want to save it?"),
368                                            flags)
369                if result == wxID_YES:
370                    self.SaveSession()
371            else:
372                result = wxID_NO
373            return result
374    
375      def NewSession(self):      def NewSession(self):
376          session = Session("")          if self.save_modified_session() != wxID_CANCEL:
377          session.AddMap(Map(""))              self.application.SetSession(create_empty_session())
         main.app.SetSession(session)  
378    
379      def OpenSession(self):      def OpenSession(self):
380          dlg = wxFileDialog(self, "Select a session file", ".", "",          if self.save_modified_session() != wxID_CANCEL:
381                             "*.session", wxOPEN)              dlg = wxFileDialog(self, _("Open Session"),
382          if dlg.ShowModal() == wxID_OK:                                 self.application.Path("data"), "",
383              main.app.OpenSession(dlg.GetPath())                                 "Thuban Session File (*.thuban)|*.thuban",
384          dlg.Destroy()                                 wxOPEN)
385                if dlg.ShowModal() == wxID_OK:
386                    self.application.OpenSession(dlg.GetPath(),
387                                                 self.run_db_param_dialog)
388                    self.application.SetPath("data", dlg.GetPath())
389                dlg.Destroy()
390    
391        def run_db_param_dialog(self, parameters, message):
392            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
393                           message)
394            return dlg.RunDialog()
395    
396      def SaveSession(self):      def SaveSession(self):
397          main.app.SaveSession()          if self.application.session.filename == None:
398                self.SaveSessionAs()
399            else:
400                self.application.SaveSession()
401    
402      def SaveSessionAs(self):      def SaveSessionAs(self):
403          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
404                             "*.session", wxOPEN)                             self.application.Path("data"), "",
405                               "Thuban Session File (*.thuban)|*.thuban",
406                               wxSAVE|wxOVERWRITE_PROMPT)
407          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
408              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
409              main.app.SaveSession()              self.application.SaveSession()
410                self.application.SetPath("data",dlg.GetPath())
411          dlg.Destroy()          dlg.Destroy()
412    
413      def Exit(self):      def Exit(self):
414          self.Close(false)          self.Close(False)
415    
416      def OnClose(self, event):      def OnClose(self, event):
417          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
418          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:  
419              event.Veto()              event.Veto()
420          else:          else:
421                # FIXME: it would be better to tie the unsubscription to
422                # wx's destroy event, but that isn't implemented for wxGTK
423                # yet.
424                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
425                DockFrame.OnClose(self, event)
426                for dlg in self.dialogs.values():
427                    dlg.Destroy()
428                self.canvas.Destroy()
429              self.Destroy()              self.Destroy()
430    
431      def SetMap(self, map):      def SetMap(self, map):
432          self.canvas.SetMap(map)          self.canvas.SetMap(map)
433            self.update_title()
434    
435            dialog = self.FindRegisteredDock("legend")
436            if dialog is not None:
437                dialog.GetPanel().SetMap(self.Map())
438    
439        def Map(self):
440            """Return the map displayed by this mainwindow"""
441    
442            return self.canvas.Map()
443    
444        def ToggleSessionTree(self):
445            """If the session tree is shown close it otherwise create a new tree"""
446            name = "session_tree"
447            dialog = self.get_open_dialog(name)
448            if dialog is None:
449                dialog = tree.SessionTreeView(self, self.application, name)
450                self.add_dialog(name, dialog)
451                dialog.Show(True)
452            else:
453                dialog.Close()
454    
455        def SessionTreeShown(self):
456            """Return true iff the session tree is currently shown"""
457            return self.get_open_dialog("session_tree") is not None
458    
459      def About(self):      def About(self):
460          self.RunMessageBox("About",          dlg = About(self)
461                             ("Thuban is a program for\n"          dlg.ShowModal()
462                              "exploring geographic data.\n"          dlg.Destroy()
463                              "Copyright (C) 2001 Intevation GmbH.\n"  
464                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
465                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
466            dialog = self.get_open_dialog(name)
467            if dialog is None:
468                map = self.canvas.Map()
469                dialog = DBFrame(self, name, self.application.Session())
470                self.add_dialog(name, dialog)
471                dialog.Show()
472            dialog.Raise()
473    
474      def AddLayer(self):      def AddLayer(self):
475          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
476                               self.application.Path("data"), "",
477                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
478                               _("All Files (*.*)") + "|*.*",
479                               wxOPEN | wxMULTIPLE)
480            if dlg.ShowModal() == wxID_OK:
481                filenames = dlg.GetPaths()
482                for filename in filenames:
483                    title = os.path.splitext(os.path.basename(filename))[0]
484                    map = self.canvas.Map()
485                    has_layers = map.HasLayers()
486                    try:
487                        store = self.application.Session().OpenShapefile(filename)
488                    except IOError:
489                        # the layer couldn't be opened
490                        self.RunMessageBox(_("Add Layer"),
491                                           _("Can't open the file '%s'.")%filename)
492                    else:
493                        layer = Layer(title, store)
494                        map.AddLayer(layer)
495                        if not has_layers:
496                            # if we're adding a layer to an empty map, fit the
497                            # new map to the window
498                            self.canvas.FitMapToWindow()
499                        self.application.SetPath("data",filename)
500            dlg.Destroy()
501    
502        def AddRasterLayer(self):
503            dlg = wxFileDialog(self, _("Select an image file"),
504                               self.application.Path("data"), "", "*.*",
505                             wxOPEN)                             wxOPEN)
506          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
507              filename = dlg.GetPath()              filename = dlg.GetPath()
508              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
509              map = self.canvas.Map()              map = self.canvas.Map()
510              has_layers = map.HasLayers()              has_layers = map.HasLayers()
511              try:              try:
512                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
513              except IOError:              except IOError:
514                  # the layer couldn't be opened                  # the layer couldn't be opened
515                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
516                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
517              else:              else:
518                    map.AddLayer(layer)
519                  if not has_layers:                  if not has_layers:
520                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
521                      # new map to the window                      # new map to the window
522                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
523                    self.application.SetPath("data", filename)
524            dlg.Destroy()
525    
526        def AddDBLayer(self):
527            """Add a layer read from a database"""
528            session = self.application.Session()
529            dlg = ChooseDBTableDialog(self, self.application.Session())
530    
531            if dlg.ShowModal() == wxID_OK:
532                dbconn, dbtable, id_column, geo_column = dlg.GetTable()
533                try:
534                    title = str(dbtable)
535    
536                    # Chose the correct Interface for the database type
537                    store = session.OpenDBShapeStore(dbconn, dbtable,
538                                                     id_column = id_column,
539                                                     geometry_column = geo_column)
540                    layer = Layer(title, store)
541                except:
542                    # Some error occured while initializing the layer
543                    self.RunMessageBox(_("Add Layer from database"),
544                                       _("Can't open the database table '%s'")
545                                       % dbtable)
546                    return
547    
548                map = self.canvas.Map()
549    
550                has_layers = map.HasLayers()
551                map.AddLayer(layer)
552                if not has_layers:
553                    self.canvas.FitMapToWindow()
554    
555          dlg.Destroy()          dlg.Destroy()
556    
557      def RemoveLayer(self):      def RemoveLayer(self):
# Line 299  class MainWindow(wxFrame): Line 559  class MainWindow(wxFrame):
559          if layer is not None:          if layer is not None:
560              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
561    
562        def CanRemoveLayer(self):
563            """Return true if the currently selected layer can be deleted.
564    
565            If no layer is selected return False.
566    
567            The return value of this method determines whether the remove
568            layer command is sensitive in menu.
569            """
570            layer = self.current_layer()
571            if layer is not None:
572                return self.canvas.Map().CanRemoveLayer(layer)
573            return False
574    
575      def RaiseLayer(self):      def RaiseLayer(self):
576          layer = self.current_layer()          layer = self.current_layer()
577          if layer is not None:          if layer is not None:
578              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
579            
580      def LowerLayer(self):      def LowerLayer(self):
581          layer = self.current_layer()          layer = self.current_layer()
582          if layer is not None:          if layer is not None:
# Line 314  class MainWindow(wxFrame): Line 587  class MainWindow(wxFrame):
587    
588          If no layer is selected, return None          If no layer is selected, return None
589          """          """
590          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
591    
592      def has_selected_layer(self):      def has_selected_layer(self):
593          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
594          tree = main.app.tree.tree          return self.canvas.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
   
     def choose_color(self):  
         """Run the color selection dialog and return the selected color.  
   
         If the user cancels, return None.  
         """  
         dlg = wxColourDialog(self)  
         color = None  
         if dlg.ShowModal() == wxID_OK:  
             data = dlg.GetColourData()  
             wxc = data.GetColour()  
             color = Color(wxc.Red() / 255.0,  
                           wxc.Green() / 255.0,  
                           wxc.Blue() / 255.0)  
         dlg.Destroy()  
         return color  
595    
596      def LayerFillColor(self):      def has_selected_shape_layer(self):
597          layer = self.current_layer()          """Return true if a shape layer is currently selected"""
598          if layer is not None:          return isinstance(self.current_layer(), Layer)
599              color = self.choose_color()  
600              if color is not None:      def has_selected_shapes(self):
601                  layer.SetFill(color)          """Return true if a shape is currently selected"""
602            return self.canvas.HasSelectedShapes()
603    
604      def LayerTransparentFill(self):      def HideLayer(self):
605          layer = self.current_layer()          layer = self.current_layer()
606          if layer is not None:          if layer is not None:
607              layer.SetFill(None)              layer.SetVisible(0)
608    
609      def LayerOutlineColor(self):      def ShowLayer(self):
610          layer = self.current_layer()          layer = self.current_layer()
611          if layer is not None:          if layer is not None:
612              color = self.choose_color()              layer.SetVisible(1)
             if color is not None:  
                 layer.SetStroke(color)  
613    
614      def LayerNoOutline(self):      def DuplicateLayer(self):
615            """Ceate a new layer above the selected layer with the same shapestore
616            """
617          layer = self.current_layer()          layer = self.current_layer()
618          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
619              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
620                                  layer.ShapeStore(),
621                                  projection = layer.GetProjection())
622                new_classification = copy.deepcopy(layer.GetClassification())
623                new_layer.SetClassification(new_classification)
624                self.Map().AddLayer(new_layer)
625    
626      def HideLayer(self):      def CanDuplicateLayer(self):
627            """Return whether the DuplicateLayer method can create a duplicate"""
628          layer = self.current_layer()          layer = self.current_layer()
629          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetVisible(1)  
630    
631      def LayerShowTable(self):      def LayerShowTable(self):
632          layer = self.current_layer()          layer = self.current_layer()
633          if layer is not None:          if layer is not None:
634              table = layer.table              table = layer.ShapeStore().Table()
635              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
636              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
637              if dialog is None:              if dialog is None:
638                  dialog = tableview.TableFrame(self, main.app.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
639                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
640                                                table)                                           layer, table)
641                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
642                  dialog.Show(true)                  dialog.Show(True)
643              else:              else:
644                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
645                  pass                  pass
646    
647      def Projection(self):      def MapProjection(self):
648          map = self.canvas.Map()  
649          proj = map.projection          name = "map_projection"
650          if proj is None:          dialog = self.get_open_dialog(name)
651              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)  
652          else:          if dialog is None:
653              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              map = self.canvas.Map()
654          if proj4Dlg.ShowModal() == wxID_OK:              dialog = projdialog.ProjFrame(self, name,
655              params = proj4Dlg.GetParams()                       _("Map Projection: %s") % map.Title(), map)
656              if params is not None:              self.add_dialog(name, dialog)
657                  proj = Projection(params)              dialog.Show()
658            dialog.Raise()
659    
660        def LayerProjection(self):
661    
662            layer = self.current_layer()
663    
664            name = "layer_projection" + str(id(layer))
665            dialog = self.get_open_dialog(name)
666    
667            if dialog is None:
668                map = self.canvas.Map()
669                dialog = projdialog.ProjFrame(self, name,
670                         _("Layer Projection: %s") % layer.Title(), layer)
671                self.add_dialog(name, dialog)
672                dialog.Show()
673            dialog.Raise()
674    
675        def LayerEditProperties(self):
676    
677            #
678            # the menu option for this should only be available if there
679            # is a current layer, so we don't need to check if the
680            # current layer is None
681            #
682    
683            layer = self.current_layer()
684            self.OpenLayerProperties(layer)
685    
686        def OpenLayerProperties(self, layer, group = None):
687            name = "layer_properties" + str(id(layer))
688            dialog = self.get_open_dialog(name)
689    
690            if dialog is None:
691                dialog = Classifier(self, name, self.Map(), layer, group)
692                self.add_dialog(name, dialog)
693                dialog.Show()
694            dialog.Raise()
695    
696        def LayerJoinTable(self):
697            layer = self.canvas.SelectedLayer()
698            if layer is not None:
699                dlg = JoinDialog(self, _("Join Layer with Table"),
700                                 self.application.session,
701                                 layer = layer)
702                dlg.ShowModal()
703    
704        def LayerUnjoinTable(self):
705            layer = self.canvas.SelectedLayer()
706            if layer is not None:
707                orig_store = layer.ShapeStore().OrigShapeStore()
708                if orig_store:
709                    layer.SetShapeStore(orig_store)
710    
711        def ShowLegend(self):
712            if not self.LegendShown():
713                self.ToggleLegend()
714    
715        def ToggleLegend(self):
716            """Show the legend if it's not shown otherwise hide it again"""
717            name = "legend"
718            dialog = self.FindRegisteredDock(name)
719    
720            if dialog is None:
721                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
722                legend.LegendPanel(dialog, None, self)
723                dialog.Dock()
724                dialog.GetPanel().SetMap(self.Map())
725                dialog.Show()
726            else:
727                dialog.Show(not dialog.IsShown())
728    
729        def LegendShown(self):
730            """Return true iff the legend is currently open"""
731            dialog = self.FindRegisteredDock("legend")
732            return dialog is not None and dialog.IsShown()
733    
734        def TableOpen(self):
735            dlg = wxFileDialog(self, _("Open Table"),
736                               self.application.Path("data"), "",
737                               _("DBF Files (*.dbf)") + "|*.dbf|" +
738                               #_("CSV Files (*.csv)") + "|*.csv|" +
739                               _("All Files (*.*)") + "|*.*",
740                               wxOPEN)
741            if dlg.ShowModal() == wxID_OK:
742                filename = dlg.GetPath()
743                dlg.Destroy()
744                try:
745                    table = self.application.session.OpenTableFile(filename)
746                except IOError:
747                    # the layer couldn't be opened
748                    self.RunMessageBox(_("Open Table"),
749                                       _("Can't open the file '%s'.") % filename)
750              else:              else:
751                  proj = None                  self.ShowTableView(table)
752              map.SetProjection(proj)                  self.application.SetPath("data",filename)
753          proj4Dlg.Destroy()  
754        def TableClose(self):
755            tables = self.application.session.UnreferencedTables()
756    
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 tables to close:"),
761                                         _("Close Table"), titles,
762                                         size = (400, 300),
763                                         style = wxDEFAULT_DIALOG_STYLE |
764                                                 wxRESIZE_BORDER)
765            if dlg.ShowModal() == wxID_OK:
766                for i in dlg.GetValue():
767                    self.application.session.RemoveTable(lst[i][1])
768    
769    
770        def TableShow(self):
771            """Offer a multi-selection dialog for tables to be displayed
772    
773            The windows for the selected tables are opened or brought to
774            the front.
775            """
776            tables = self.application.session.Tables()
777    
778            lst = [(t.Title(), t) for t in tables]
779            lst.sort()
780            titles = [i[0] for i in lst]
781            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
782                                         _("Show Table"), titles,
783                                         size = (400,300),
784                                         style = wxDEFAULT_DIALOG_STYLE |
785                                                 wxRESIZE_BORDER)
786            if (dlg.ShowModal() == wxID_OK):
787                for i in dlg.GetValue():
788                    # XXX: if the table belongs to a layer, open a
789                    # LayerTableFrame instead of QueryTableFrame
790                    self.ShowTableView(lst[i][1])
791    
792        def TableJoin(self):
793            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
794            dlg.ShowModal()
795    
796        def ShowTableView(self, table):
797            """Open a table view for the table and optionally"""
798            name = "table_view%d" % id(table)
799            dialog = self.get_open_dialog(name)
800            if dialog is None:
801                dialog = tableview.QueryTableFrame(self, name,
802                                                   _("Table: %s") % table.Title(),
803                                                   table)
804                self.add_dialog(name, dialog)
805                dialog.Show(True)
806            dialog.Raise()
807    
808        def TableRename(self):
809            """Let the user rename a table"""
810    
811            # First, let the user select a table
812            tables = self.application.session.Tables()
813            lst = [(t.Title(), t) for t in tables]
814            lst.sort()
815            titles = [i[0] for i in lst]
816            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
817                                         _("Rename Table"), titles,
818                                         size = (400,300),
819                                         style = wxDEFAULT_DIALOG_STYLE |
820                                                 wxRESIZE_BORDER)
821            if (dlg.ShowModal() == wxID_OK):
822                to_rename = [lst[i][1] for i in dlg.GetValue()]
823                dlg.Destroy()
824            else:
825                to_rename = []
826    
827            # Second, let the user rename the layers
828            for table in to_rename:
829                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
830                                        table.Title())
831                try:
832                    if dlg.ShowModal() == wxID_OK:
833                        title = dlg.GetValue()
834                        if title != "":
835                            table.SetTitle(title)
836    
837                            # Make sure the session is marked as modified.
838                            # FIXME: This should be handled automatically,
839                            # but that requires more changes to the tables
840                            # than I have time for currently.
841                            self.application.session.changed()
842                finally:
843                    dlg.Destroy()
844    
845    
846      def ZoomInTool(self):      def ZoomInTool(self):
847          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 419  class MainWindow(wxFrame): Line 854  class MainWindow(wxFrame):
854    
855      def IdentifyTool(self):      def IdentifyTool(self):
856          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
857            self.identify_view_on_demand(None, None)
858    
859      def LabelTool(self):      def LabelTool(self):
860          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 426  class MainWindow(wxFrame): Line 862  class MainWindow(wxFrame):
862      def FullExtent(self):      def FullExtent(self):
863          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
864    
865        def FullLayerExtent(self):
866            self.canvas.FitLayerToWindow(self.current_layer())
867    
868        def FullSelectionExtent(self):
869            self.canvas.FitSelectedToWindow()
870    
871        def ExportMap(self):
872            self.canvas.Export()
873    
874      def PrintMap(self):      def PrintMap(self):
875          self.canvas.Print()          self.canvas.Print()
876    
877      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
878            dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
879                                    self.Map().Title())
880            if dlg.ShowModal() == wxID_OK:
881                title = dlg.GetValue()
882                if title != "":
883                    self.Map().SetTitle(title)
884    
885            dlg.Destroy()
886    
887        def RenameLayer(self):
888            """Let the user rename the currently selected layer"""
889            layer = self.current_layer()
890            if layer is not None:
891                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
892                                        layer.Title())
893                try:
894                    if dlg.ShowModal() == wxID_OK:
895                        title = dlg.GetValue()
896                        if title != "":
897                            layer.SetTitle(title)
898                finally:
899                    dlg.Destroy()
900    
901        def identify_view_on_demand(self, layer, shapes):
902            """Subscribed to the canvas' SHAPES_SELECTED message
903    
904            If the current tool is the identify tool, at least one shape is
905            selected and the identify dialog is not shown, show the dialog.
906            """
907            # If the selection has become empty we don't need to do
908            # anything. Otherwise it could happen that the dialog was popped
909            # up when the selection became empty, e.g. when a new selection
910            # is opened while the identify tool is active and dialog had
911            # been closed
912            if not shapes:
913                return
914    
915          name = "identify_view"          name = "identify_view"
916          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
917              if not self.dialog_open(name):              if not self.dialog_open(name):
918                  dialog = identifyview.IdentifyView(self, main.app.interactor,                  dialog = identifyview.IdentifyView(self, name)
                                                    name)  
919                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
920                  dialog.Show(true)                  dialog.Show(True)
921              else:              else:
922                  # FIXME: bring dialog to from?                  # FIXME: bring dialog to front?
923                  pass                  pass
924    
925        def title_changed(self, map):
926            """Subscribed to the canvas' TITLE_CHANGED messages"""
927            self.update_title()
928    
929        def update_title(self):
930            """Update the window's title according to it's current state.
931    
932            In this default implementation the title is 'Thuban - ' followed
933            by the map's title or simply 'Thuban' if there is not map.
934            Derived classes should override this method to get different
935            titles.
936    
937            This method is called automatically by other methods when the
938            title may have to change. For the methods implemented in this
939            class this usually only means that a different map has been set
940            or the current map's title has changed.
941            """
942            map = self.Map()
943            if map is not None:
944                title = _("Thuban - %s") % (map.Title(),)
945            else:
946                title = _("Thuban")
947            self.SetTitle(title)
948    
949    
950  #  #
951  # Define all the commands available in the main window  # Define all the commands available in the main window
952  #  #
# Line 448  class MainWindow(wxFrame): Line 954  class MainWindow(wxFrame):
954    
955  # Helper functions to define common command implementations  # Helper functions to define common command implementations
956  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
957      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
958      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
959    
960  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
961      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
962        """Add a command implemented by a method of the mainwindow object"""
963      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
964                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
965                             sensitive = sensitive, checked = checked))
966    
967    def make_check_current_tool(toolname):
968        """Return a function that tests if the currently active tool is toolname
969    
970        The returned function can be called with the context and returns
971        true iff the currently active tool's name is toolname. It's directly
972        usable as the 'checked' callback of a command.
973        """
974        def check_current_tool(context, name=toolname):
975            return context.mainwindow.canvas.CurrentTool() == name
976        return check_current_tool
977    
978  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
979                    icon = ""):                    icon = "", sensitive = None):
980      """Add a tool command"""      """Add a tool command"""
981      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
982          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
983      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
984                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
985    
986  def _has_selected_layer(context):  def _has_selected_layer(context):
987      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
988      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
989    
990    def _has_selected_shape_layer(context):
991        """Return true if a shape layer is selected in the context"""
992        return context.mainwindow.has_selected_shape_layer()
993    
994    def _has_selected_shapes(context):
995        """Return true if a layer is selected in the context"""
996        return context.mainwindow.has_selected_shapes()
997    
998    def _can_remove_layer(context):
999        return context.mainwindow.CanRemoveLayer()
1000    
1001    def _has_tree_window_shown(context):
1002        """Return true if the tree window is shown"""
1003        return context.mainwindow.SessionTreeShown()
1004    
1005    def _has_visible_map(context):
1006        """Return true iff theres a visible map in the mainwindow.
1007    
1008        A visible map is a map with at least one visible layer."""
1009        map = context.mainwindow.Map()
1010        if map is not None:
1011            for layer in map.Layers():
1012                if layer.Visible():
1013                    return 1
1014        return 0
1015    
1016    def _has_legend_shown(context):
1017        """Return true if the legend window is shown"""
1018        return context.mainwindow.LegendShown()
1019    
1020    def _has_gdal_support(context):
1021        """Return True if the GDAL is available"""
1022        return Thuban.Model.resource.has_gdal_support()
1023    
1024    def _has_dbconnections(context):
1025        """Return whether the the session has database connections"""
1026        return context.session.HasDBConnections()
1027    
1028    def _has_postgis_support(context):
1029        return has_postgis_support()
1030    
1031    
1032  # File menu  # File menu
1033  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1034  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
1035  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1036  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
1037  _method_command("exit", "&Exit", "Exit")  _method_command("save_session", _("&Save Session"), "SaveSession",
1038                    helptext =_("Save this session to the file it was opened from"))
1039    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1040                    helptext = _("Save this session to a new file"))
1041    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1042                    checked = _has_tree_window_shown,
1043                    helptext = _("Toggle on/off the session tree analysis window"))
1044    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1045                    checked = _has_legend_shown,
1046                    helptext = _("Toggle Legend on/off"))
1047    _method_command("database_management", _("&Database Connections..."),
1048                    "DatabaseManagement",
1049                    sensitive = _has_postgis_support)
1050    _method_command("exit", _("E&xit"), "Exit",
1051                    helptext = _("Finish working with Thuban"))
1052    
1053  # Help menu  # Help menu
1054  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1055                    helptext = _("Info about Thuban authors, version and modules"))
1056    
1057    
1058  # Map menu  # Map menu
1059  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1060                    helptext = _("Set or change the map projection"))
1061    
1062  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1063                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1064  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1065                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1066  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1067                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1068  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1069                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1070  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1071                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1072  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
1073  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1074                  sensitive = _has_visible_map)
1075    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1076                  helptext = _("Add/Remove labels"), icon = "label",
1077                  sensitive = _has_visible_map)
1078    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1079                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1080                  sensitive = _has_visible_map)
1081    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1082                    helptext = _("Zoom to the full layer extent"),
1083                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1084    _method_command("selected_full_extent", _("&Full selection extent"),
1085                    "FullSelectionExtent",
1086                    helptext = _("Zoom to the full selection extent"),
1087                    icon = "fullselextent", sensitive = _has_selected_shapes)
1088    _method_command("map_export", _("E&xport"), "ExportMap",
1089                    helptext = _("Export the map to file"))
1090    _method_command("map_print", _("Prin&t"), "PrintMap",
1091                    helptext = _("Print the map"))
1092    _method_command("map_rename", _("&Rename..."), "RenameMap",
1093                    helptext = _("Rename the map"))
1094    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1095                    helptext = _("Add a new layer to the map"))
1096    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1097                    helptext = _("Add a new image layer to the map"),
1098                    sensitive = _has_gdal_support)
1099    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1100                    helptext = _("Add a new database layer to active map"),
1101                    sensitive = _has_dbconnections)
1102    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1103                    helptext = _("Remove selected layer"),
1104                    sensitive = _can_remove_layer)
1105    
1106  # Layer menu  # Layer menu
1107  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1108                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1109  _method_command("layer_remove", "&Remove", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1110                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1111                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1112  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1113                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1114                    helptext = _("Rename selected layer"),
1115                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1116  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1117                  "LayerTransparentFill",                  helptext = _("Raise selected layer"),
                 helptext = "Do not fill the selected layer(s)",  
1118                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1119  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1120                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer"),
1121                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1122  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
1123                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer visible"),
1124                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1125  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1126                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer unvisible"),
                 sensitive = _has_selected_layer)  
 _method_command("layer_lower", "&Lower", "LowerLayer",  
                 helptext = "Lower selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_show", "&Show", "ShowLayer",  
                 helptext = "Make selected layer(s) visible",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_hide", "&Hide", "HideLayer",  
                 helptext = "Make selected layer(s) unvisible",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  
                 helptext = "Show the selected layer's table",  
1127                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1128    _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1129                    helptext = _("Show the selected layer's table"),
1130                    sensitive = _has_selected_shape_layer)
1131    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1132                    sensitive = _has_selected_layer,
1133                    helptext = _("Edit the properties of the selected layer"))
1134    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1135                    sensitive = _has_selected_shape_layer,
1136                    helptext = _("Join and attach a table to the selected layer"))
1137    
1138    def _can_unjoin(context):
1139        """Return whether the Layer/Unjoin command can be executed.
1140    
1141        This is the case if a layer is selected and that layer has a
1142        shapestore that has an original shapestore.
1143        """
1144        layer = context.mainwindow.SelectedLayer()
1145        if layer is None:
1146            return 0
1147        getstore = getattr(layer, "ShapeStore", None)
1148        if getstore is not None:
1149            return getstore().OrigShapeStore() is not None
1150        else:
1151            return 0
1152    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1153                    sensitive = _can_unjoin,
1154                    helptext = _("Undo the last join operation"))
1155    
1156    
1157    def _has_tables(context):
1158        return bool(context.session.Tables())
1159    
1160    # Table menu
1161    _method_command("table_open", _("&Open..."), "TableOpen",
1162                    helptext = _("Open a DBF-table from a file"))
1163    _method_command("table_close", _("&Close..."), "TableClose",
1164           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1165                    helptext = _("Close one or more tables from a list"))
1166    _method_command("table_rename", _("&Rename..."), "TableRename",
1167                    sensitive = _has_tables,
1168                    helptext = _("Rename one or more tables"))
1169    _method_command("table_show", _("&Show..."), "TableShow",
1170                    sensitive = _has_tables,
1171                    helptext = _("Show one or more tables in a dialog"))
1172    _method_command("table_join", _("&Join..."), "TableJoin",
1173                    sensitive = _has_tables,
1174                    helptext = _("Join two tables creating a new one"))
1175    
1176    #  Export only under Windows ...
1177    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1178                            None,
1179                            "map_rename",
1180                            "map_projection",
1181                            None,
1182                            "map_zoom_in_tool", "map_zoom_out_tool",
1183                            "map_pan_tool",
1184                            "map_full_extent",
1185                            "layer_full_extent",
1186                            "selected_full_extent",
1187                            None,
1188                            "map_identify_tool", "map_label_tool",
1189                            None,
1190                            "toggle_legend",
1191                            None]
1192    if wxPlatform == '__WXMSW__':
1193        map_menu.append("map_export")
1194    map_menu.append("map_print")
1195    
1196    # the menu structure
1197    main_menu = Menu("<main>", "<main>",
1198                     [Menu("file", _("&File"),
1199                           ["new_session", "open_session", None,
1200                            "save_session", "save_session_as", None,
1201                            "database_management", None,
1202                            "toggle_session_tree", None,
1203                            "exit"]),
1204                      Menu("map", _("&Map"), map_menu),
1205                      Menu("layer", _("&Layer"),
1206                           ["layer_rename", "layer_duplicate",
1207                            None,
1208                            "layer_raise", "layer_lower",
1209                            None,
1210                            "layer_show", "layer_hide",
1211                            None,
1212                            "layer_projection",
1213                            None,
1214                            "layer_show_table",
1215                            "layer_jointable",
1216                            "layer_unjointable",
1217                            None,
1218                            "layer_properties"]),
1219                      Menu("table", _("&Table"),
1220                           ["table_open", "table_close", "table_rename",
1221                           None,
1222                           "table_show",
1223                           None,
1224                           "table_join"]),
1225                      Menu("help", _("&Help"),
1226                           ["help_about"])])
1227    
1228    # the main toolbar
1229    
1230    main_toolbar = Menu("<toolbar>", "<toolbar>",
1231                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1232                         "map_full_extent",
1233                         "layer_full_extent",
1234                         "selected_full_extent",
1235                         None,
1236                         "map_identify_tool", "map_label_tool"])
1237    
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