/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 24 by bh, Wed Sep 5 13:35:46 2001 UTC revision 2017 by bh, Wed Dec 3 18:43:03 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 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  
   
   
 # 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()
112    
113            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 123  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 137  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 156  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
313    
314        def init_dialogs(self):
315            """Initialize the dialog handling"""
316            # The mainwindow maintains a dict mapping names to open
317            # non-modal dialogs. The dialogs are put into this dict when
318            # they're created and removed when they're closed
319            self.dialogs = {}
320    
321        def add_dialog(self, name, dialog):
322            if self.dialogs.has_key(name):
323                raise RuntimeError(_("The Dialog named %s is already open") % name)
324            self.dialogs[name] = dialog
325    
326        def dialog_open(self, name):
327            return self.dialogs.has_key(name)
328    
329        def remove_dialog(self, name):
330            del self.dialogs[name]
331    
332        def get_open_dialog(self, name):
333            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:                                 "Thuban Session File (*.thuban)|*.thuban",
383              main.app.OpenSession(dlg.GetPath())                                 wxOPEN)
384          dlg.Destroy()              if dlg.ShowModal() == wxID_OK:
385                    self.application.OpenSession(dlg.GetPath(),
386                                                 self.run_db_param_dialog)
387                dlg.Destroy()
388    
389        def run_db_param_dialog(self, parameters, message):
390            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
391                           message)
392            return dlg.RunDialog()
393    
394      def SaveSession(self):      def SaveSession(self):
395          main.app.SaveSession()          if self.application.session.filename == None:
396                self.SaveSessionAs()
397            else:
398                self.application.SaveSession()
399    
400      def SaveSessionAs(self):      def SaveSessionAs(self):
401          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
402                             "*.session", wxOPEN)                             "Thuban Session File (*.thuban)|*.thuban",
403                               wxSAVE|wxOVERWRITE_PROMPT)
404          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
405              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
406              main.app.SaveSession()              self.application.SaveSession()
407          dlg.Destroy()          dlg.Destroy()
408    
409      def Exit(self):      def Exit(self):
410          self.Close(false)          self.Close(False)
411    
412      def OnClose(self, event):      def OnClose(self, event):
413          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
414          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:  
415              event.Veto()              event.Veto()
416          else:          else:
417                # FIXME: it would be better to tie the unsubscription to
418                # wx's destroy event, but that isn't implemented for wxGTK
419                # yet.
420                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
421                DockFrame.OnClose(self, event)
422                for dlg in self.dialogs.values():
423                    dlg.Destroy()
424                self.canvas.Destroy()
425              self.Destroy()              self.Destroy()
426    
427      def SetMap(self, map):      def SetMap(self, map):
428          self.canvas.SetMap(map)          self.canvas.SetMap(map)
429            self.update_title()
430    
431            dialog = self.FindRegisteredDock("legend")
432            if dialog is not None:
433                dialog.GetPanel().SetMap(self.Map())
434    
435        def Map(self):
436            """Return the map displayed by this mainwindow"""
437    
438            return self.canvas.Map()
439    
440        def ToggleSessionTree(self):
441            """If the session tree is shown close it otherwise create a new tree"""
442            name = "session_tree"
443            dialog = self.get_open_dialog(name)
444            if dialog is None:
445                dialog = tree.SessionTreeView(self, self.application, name)
446                self.add_dialog(name, dialog)
447                dialog.Show(True)
448            else:
449                dialog.Close()
450    
451        def SessionTreeShown(self):
452            """Return true iff the session tree is currently shown"""
453            return self.get_open_dialog("session_tree") is not None
454    
455      def About(self):      def About(self):
456          self.RunMessageBox("About",          dlg = About(self)
457                             ("Thuban is a program for\n"          dlg.ShowModal()
458                              "exploring geographic data.\n"          dlg.Destroy()
459                              "Copyright (C) 2001 Intevation GmbH.\n"  
460                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
461                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
462            dialog = self.get_open_dialog(name)
463            if dialog is None:
464                map = self.canvas.Map()
465                dialog = DBFrame(self, name, self.application.Session())
466                self.add_dialog(name, dialog)
467                dialog.Show()
468            dialog.Raise()
469    
470      def AddLayer(self):      def AddLayer(self):
471          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"), ".", "",
472                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
473                               _("All Files (*.*)") + "|*.*",
474                               wxOPEN | wxMULTIPLE)
475            if dlg.ShowModal() == wxID_OK:
476                filenames = dlg.GetPaths()
477                for filename in filenames:
478                    title = os.path.splitext(os.path.basename(filename))[0]
479                    map = self.canvas.Map()
480                    has_layers = map.HasLayers()
481                    try:
482                        store = self.application.Session().OpenShapefile(filename)
483                    except IOError:
484                        # the layer couldn't be opened
485                        self.RunMessageBox(_("Add Layer"),
486                                           _("Can't open the file '%s'.")%filename)
487                    else:
488                        layer = Layer(title, store)
489                        map.AddLayer(layer)
490                        if not has_layers:
491                            # if we're adding a layer to an empty map, fit the
492                            # new map to the window
493                            self.canvas.FitMapToWindow()
494            dlg.Destroy()
495    
496        def AddRasterLayer(self):
497            dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",
498                             wxOPEN)                             wxOPEN)
499          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
500              filename = dlg.GetPath()              filename = dlg.GetPath()
501              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
502              map = self.canvas.Map()              map = self.canvas.Map()
503              has_layers = map.HasLayers()              has_layers = map.HasLayers()
504              try:              try:
505                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
506              except IOError:              except IOError:
507                  # the layer couldn't be opened                  # the layer couldn't be opened
508                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
509                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
510              else:              else:
511                    map.AddLayer(layer)
512                  if not has_layers:                  if not has_layers:
513                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
514                      # new map to the window                      # new map to the window
515                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
516          dlg.Destroy()          dlg.Destroy()
517    
518        def AddDBLayer(self):
519            """Add a layer read from a database"""
520            session = self.application.Session()
521            dlg = ChooseDBTableDialog(self, self.application.Session())
522    
523            if dlg.ShowModal() == wxID_OK:
524                dbconn, dbtable = dlg.GetTable()
525                try:
526                    title = str(dbtable)
527    
528                    # Chose the correct Interface for the database type
529                    store = PostGISShapeStore(dbconn, dbtable)
530                    session.AddShapeStore(store)
531                    layer = Layer(title, store)
532                except:
533                    # Some error occured while initializing the layer
534                    self.RunMessageBox(_("Add Layer from database"),
535                                       _("Can't open the database table '%s'")
536                                       % dbtable)
537    
538                map = self.canvas.Map()
539    
540                has_layers = map.HasLayers()
541                map.AddLayer(layer)
542                if not has_layers:
543                    self.canvas.FitMapToWindow()
544    
545            dlg.Destroy()
546    
547      def RemoveLayer(self):      def RemoveLayer(self):
548          layer = self.current_layer()          layer = self.current_layer()
549          if layer is not None:          if layer is not None:
550              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
551    
552        def CanRemoveLayer(self):
553            """Return true if the currently selected layer can be deleted.
554    
555            If no layer is selected return False.
556    
557            The return value of this method determines whether the remove
558            layer command is sensitive in menu.
559            """
560            layer = self.current_layer()
561            if layer is not None:
562                return self.canvas.Map().CanRemoveLayer(layer)
563            return False
564    
565      def RaiseLayer(self):      def RaiseLayer(self):
566          layer = self.current_layer()          layer = self.current_layer()
567          if layer is not None:          if layer is not None:
568              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
569            
570      def LowerLayer(self):      def LowerLayer(self):
571          layer = self.current_layer()          layer = self.current_layer()
572          if layer is not None:          if layer is not None:
# Line 288  class MainWindow(wxFrame): Line 577  class MainWindow(wxFrame):
577    
578          If no layer is selected, return None          If no layer is selected, return None
579          """          """
580          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
581    
582      def has_selected_layer(self):      def has_selected_layer(self):
583          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
584          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.  
585    
586          If the user cancels, return None.      def has_selected_shapes(self):
587          """          """Return true if a shape is currently selected"""
588          dlg = wxColourDialog(self)          return self.canvas.HasSelectedShapes()
         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  
589    
590      def LayerFillColor(self):      def HideLayer(self):
591          layer = self.current_layer()          layer = self.current_layer()
592          if layer is not None:          if layer is not None:
593              color = self.choose_color()              layer.SetVisible(0)
             if color is not None:  
                 layer.SetFill(color)  
594    
595      def LayerTransparentFill(self):      def ShowLayer(self):
596          layer = self.current_layer()          layer = self.current_layer()
597          if layer is not None:          if layer is not None:
598              layer.SetFill(None)              layer.SetVisible(1)
599    
600      def LayerOutlineColor(self):      def DuplicateLayer(self):
601            """Ceate a new layer above the selected layer with the same shapestore
602            """
603          layer = self.current_layer()          layer = self.current_layer()
604          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
605              color = self.choose_color()              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
606              if color is not None:                                layer.ShapeStore(),
607                  layer.SetStroke(color)                                projection = layer.GetProjection())
608                new_classification = copy.deepcopy(layer.GetClassification())
609                new_layer.SetClassification(new_classification)
610                self.Map().AddLayer(new_layer)
611    
612      def LayerNoOutline(self):      def CanDuplicateLayer(self):
613            """Return whether the DuplicateLayer method can create a duplicate"""
614          layer = self.current_layer()          layer = self.current_layer()
615          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetStroke(None)  
616    
617      def HideLayer(self):      def LayerShowTable(self):
618          layer = self.current_layer()          layer = self.current_layer()
619          if layer is not None:          if layer is not None:
620              layer.SetVisible(0)              table = layer.ShapeStore().Table()
621                        name = "table_view" + str(id(table))
622      def ShowLayer(self):              dialog = self.get_open_dialog(name)
623                if dialog is None:
624                    dialog = tableview.LayerTableFrame(self, name,
625                                             _("Layer Table: %s") % layer.Title(),
626                                             layer, table)
627                    self.add_dialog(name, dialog)
628                    dialog.Show(True)
629                else:
630                    # FIXME: bring dialog to front here
631                    pass
632    
633        def MapProjection(self):
634    
635            name = "map_projection"
636            dialog = self.get_open_dialog(name)
637    
638            if dialog is None:
639                map = self.canvas.Map()
640                dialog = projdialog.ProjFrame(self, name,
641                         _("Map Projection: %s") % map.Title(), map)
642                self.add_dialog(name, dialog)
643                dialog.Show()
644            dialog.Raise()
645    
646        def LayerProjection(self):
647    
648          layer = self.current_layer()          layer = self.current_layer()
         if layer is not None:  
             layer.SetVisible(1)  
649    
650      def LayerShowTable(self):          name = "layer_projection" + str(id(layer))
651            dialog = self.get_open_dialog(name)
652    
653            if dialog is None:
654                map = self.canvas.Map()
655                dialog = projdialog.ProjFrame(self, name,
656                         _("Layer Projection: %s") % layer.Title(), layer)
657                self.add_dialog(name, dialog)
658                dialog.Show()
659            dialog.Raise()
660    
661        def LayerEditProperties(self):
662    
663            #
664            # the menu option for this should only be available if there
665            # is a current layer, so we don't need to check if the
666            # current layer is None
667            #
668    
669          layer = self.current_layer()          layer = self.current_layer()
670            self.OpenLayerProperties(layer)
671    
672        def OpenLayerProperties(self, layer, group = None):
673            name = "layer_properties" + str(id(layer))
674            dialog = self.get_open_dialog(name)
675    
676            if dialog is None:
677                dialog = Classifier(self, name, self.Map(), layer, group)
678                self.add_dialog(name, dialog)
679                dialog.Show()
680            dialog.Raise()
681    
682        def LayerJoinTable(self):
683            layer = self.canvas.SelectedLayer()
684            if layer is not None:
685                dlg = JoinDialog(self, _("Join Layer with Table"),
686                                 self.application.session,
687                                 layer = layer)
688                dlg.ShowModal()
689    
690        def LayerUnjoinTable(self):
691            layer = self.canvas.SelectedLayer()
692          if layer is not None:          if layer is not None:
693              tv = tableview.TableFrame(self, layer.table)              orig_store = layer.ShapeStore().OrigShapeStore()
694              tv.Show(true)              if orig_store:
695                    layer.SetShapeStore(orig_store)
696    
697        def ShowLegend(self):
698            if not self.LegendShown():
699                self.ToggleLegend()
700    
701        def ToggleLegend(self):
702            """Show the legend if it's not shown otherwise hide it again"""
703            name = "legend"
704            dialog = self.FindRegisteredDock(name)
705    
706            if dialog is None:
707                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
708                legend.LegendPanel(dialog, None, self)
709                dialog.Dock()
710                dialog.GetPanel().SetMap(self.Map())
711                dialog.Show()
712            else:
713                dialog.Show(not dialog.IsShown())
714    
715      def Projection(self):      def LegendShown(self):
716          map = self.canvas.Map()          """Return true iff the legend is currently open"""
717          proj = map.projection          dialog = self.FindRegisteredDock("legend")
718          if proj is None:          return dialog is not None and dialog.IsShown()
719              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)  
720          else:      def TableOpen(self):
721              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)          dlg = wxFileDialog(self, _("Open Table"), ".", "",
722          if proj4Dlg.ShowModal() == wxID_OK:                             _("DBF Files (*.dbf)") + "|*.dbf|" +
723              params = proj4Dlg.GetParams()                             #_("CSV Files (*.csv)") + "|*.csv|" +
724              if params is not None:                             _("All Files (*.*)") + "|*.*",
725                  proj = Projection(params)                             wxOPEN)
726            if dlg.ShowModal() == wxID_OK:
727                filename = dlg.GetPath()
728                dlg.Destroy()
729                try:
730                    table = self.application.session.OpenTableFile(filename)
731                except IOError:
732                    # the layer couldn't be opened
733                    self.RunMessageBox(_("Open Table"),
734                                       _("Can't open the file '%s'.") % filename)
735              else:              else:
736                  proj = None                  self.ShowTableView(table)
737              map.SetProjection(proj)  
738          proj4Dlg.Destroy()      def TableClose(self):
739            tables = self.application.session.UnreferencedTables()
740    
741            lst = [(t.Title(), t) for t in tables]
742            lst.sort()
743            titles = [i[0] for i in lst]
744            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
745                                         _("Close Table"), titles,
746                                         size = (400, 300),
747                                         style = wxDEFAULT_DIALOG_STYLE |
748                                                 wxRESIZE_BORDER)
749            if dlg.ShowModal() == wxID_OK:
750                for i in dlg.GetValue():
751                    self.application.session.RemoveTable(lst[i][1])
752    
753    
754        def TableShow(self):
755            """Offer a multi-selection dialog for tables to be displayed
756    
757            The windows for the selected tables are opened or brought to
758            the front.
759            """
760            tables = self.application.session.Tables()
761    
762            lst = [(t.Title(), t) for t in tables]
763            lst.sort()
764            titles = [i[0] for i in lst]
765            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
766                                         _("Show Table"), titles,
767                                         size = (400,300),
768                                         style = wxDEFAULT_DIALOG_STYLE |
769                                                 wxRESIZE_BORDER)
770            if (dlg.ShowModal() == wxID_OK):
771                for i in dlg.GetValue():
772                    # XXX: if the table belongs to a layer, open a
773                    # LayerTableFrame instead of QueryTableFrame
774                    self.ShowTableView(lst[i][1])
775    
776        def TableJoin(self):
777            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
778            dlg.ShowModal()
779    
780        def ShowTableView(self, table):
781            """Open a table view for the table and optionally"""
782            name = "table_view%d" % id(table)
783            dialog = self.get_open_dialog(name)
784            if dialog is None:
785                dialog = tableview.QueryTableFrame(self, name,
786                                                   _("Table: %s") % table.Title(),
787                                                   table)
788                self.add_dialog(name, dialog)
789                dialog.Show(True)
790            dialog.Raise()
791    
792        def TableRename(self):
793            """Let the user rename a table"""
794    
795            # First, let the user select a table
796            tables = self.application.session.Tables()
797            lst = [(t.Title(), t) for t in tables]
798            lst.sort()
799            titles = [i[0] for i in lst]
800            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
801                                         _("Rename Table"), titles,
802                                         size = (400,300),
803                                         style = wxDEFAULT_DIALOG_STYLE |
804                                                 wxRESIZE_BORDER)
805            if (dlg.ShowModal() == wxID_OK):
806                to_rename = [lst[i][1] for i in dlg.GetValue()]
807                dlg.Destroy()
808            else:
809                to_rename = []
810    
811            # Second, let the user rename the layers
812            for table in to_rename:
813                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
814                                        table.Title())
815                try:
816                    if dlg.ShowModal() == wxID_OK:
817                        title = dlg.GetValue()
818                        if title != "":
819                            table.SetTitle(title)
820    
821                            # Make sure the session is marked as modified.
822                            # FIXME: This should be handled automatically,
823                            # but that requires more changes to the tables
824                            # than I have time for currently.
825                            self.application.session.changed()
826                finally:
827                    dlg.Destroy()
828    
829    
830      def ZoomInTool(self):      def ZoomInTool(self):
831          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 382  class MainWindow(wxFrame): Line 837  class MainWindow(wxFrame):
837          self.canvas.PanTool()          self.canvas.PanTool()
838    
839      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)  
840          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
841            self.identify_view_on_demand(None, None)
842    
843      def LabelTool(self):      def LabelTool(self):
844          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 393  class MainWindow(wxFrame): Line 846  class MainWindow(wxFrame):
846      def FullExtent(self):      def FullExtent(self):
847          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
848    
849        def FullLayerExtent(self):
850            self.canvas.FitLayerToWindow(self.current_layer())
851    
852        def FullSelectionExtent(self):
853            self.canvas.FitSelectedToWindow()
854    
855        def ExportMap(self):
856            self.canvas.Export()
857    
858      def PrintMap(self):      def PrintMap(self):
859          self.canvas.Print()          self.canvas.Print()
860    
861        def RenameMap(self):
862            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
863                                    self.Map().Title())
864            if dlg.ShowModal() == wxID_OK:
865                title = dlg.GetValue()
866                if title != "":
867                    self.Map().SetTitle(title)
868    
869            dlg.Destroy()
870    
871        def RenameLayer(self):
872            """Let the user rename the currently selected layer"""
873            layer = self.current_layer()
874            if layer is not None:
875                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
876                                        layer.Title())
877                try:
878                    if dlg.ShowModal() == wxID_OK:
879                        title = dlg.GetValue()
880                        if title != "":
881                            layer.SetTitle(title)
882                finally:
883                    dlg.Destroy()
884    
885        def identify_view_on_demand(self, layer, shapes):
886            """Subscribed to the canvas' SHAPES_SELECTED message
887    
888            If the current tool is the identify tool, at least one shape is
889            selected and the identify dialog is not shown, show the dialog.
890            """
891            # If the selection has become empty we don't need to do
892            # anything. Otherwise it could happen that the dialog was popped
893            # up when the selection became empty, e.g. when a new selection
894            # is opened while the identify tool is active and dialog had
895            # been closed
896            if not shapes:
897                return
898    
899            name = "identify_view"
900            if self.canvas.CurrentTool() == "IdentifyTool":
901                if not self.dialog_open(name):
902                    dialog = identifyview.IdentifyView(self, name)
903                    self.add_dialog(name, dialog)
904                    dialog.Show(True)
905                else:
906                    # FIXME: bring dialog to front?
907                    pass
908    
909        def title_changed(self, map):
910            """Subscribed to the canvas' TITLE_CHANGED messages"""
911            self.update_title()
912    
913        def update_title(self):
914            """Update the window's title according to it's current state.
915    
916            In this default implementation the title is 'Thuban - ' followed
917            by the map's title or simply 'Thuban' if there is not map.
918            Derived classes should override this method to get different
919            titles.
920    
921            This method is called automatically by other methods when the
922            title may have to change. For the methods implemented in this
923            class this usually only means that a different map has been set
924            or the current map's title has changed.
925            """
926            map = self.Map()
927            if map is not None:
928                title = _("Thuban - %s") % (map.Title(),)
929            else:
930                title = _("Thuban")
931            self.SetTitle(title)
932    
933    
934  #  #
935  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 404  class MainWindow(wxFrame): Line 938  class MainWindow(wxFrame):
938    
939  # Helper functions to define common command implementations  # Helper functions to define common command implementations
940  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
941      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
942      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
943    
944  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
945      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
946        """Add a command implemented by a method of the mainwindow object"""
947      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
948                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
949                             sensitive = sensitive, checked = checked))
950    
951    def make_check_current_tool(toolname):
952        """Return a function that tests if the currently active tool is toolname
953    
954        The returned function can be called with the context and returns
955        true iff the currently active tool's name is toolname. It's directly
956        usable as the 'checked' callback of a command.
957        """
958        def check_current_tool(context, name=toolname):
959            return context.mainwindow.canvas.CurrentTool() == name
960        return check_current_tool
961    
962  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
963                    icon = ""):                    icon = "", sensitive = None):
964      """Add a tool command"""      """Add a tool command"""
965      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
966          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
967      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
968                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
969    
970  def _has_selected_layer(context):  def _has_selected_layer(context):
971      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
972      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
973    
974    def _has_selected_shapes(context):
975        """Return true if a layer is selected in the context"""
976        return context.mainwindow.has_selected_shapes()
977    
978    def _can_remove_layer(context):
979        return context.mainwindow.CanRemoveLayer()
980    
981    def _has_tree_window_shown(context):
982        """Return true if the tree window is shown"""
983        return context.mainwindow.SessionTreeShown()
984    
985    def _has_visible_map(context):
986        """Return true iff theres a visible map in the mainwindow.
987    
988        A visible map is a map with at least one visible layer."""
989        map = context.mainwindow.Map()
990        if map is not None:
991            for layer in map.Layers():
992                if layer.Visible():
993                    return 1
994        return 0
995    
996    def _has_legend_shown(context):
997        """Return true if the legend window is shown"""
998        return context.mainwindow.LegendShown()
999    
1000    def _has_gdal_support(context):
1001        """Return True if the GDAL is available"""
1002        return Thuban.Model.resource.has_gdal_support()
1003    
1004    def _has_dbconnections(context):
1005        """Return whether the the session has database connections"""
1006        return context.session.HasDBConnections()
1007    
1008    def _has_postgis_support(context):
1009        return has_postgis_support()
1010    
1011    
1012  # File menu  # File menu
1013  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1014  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
1015  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1016  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
1017  _method_command("exit", "&Exit", "Exit")  _method_command("save_session", _("&Save Session"), "SaveSession",
1018                    helptext =_("Save this session to the file it was opened from"))
1019    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1020                    helptext = _("Save this session to a new file"))
1021    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1022                    checked = _has_tree_window_shown,
1023                    helptext = _("Toggle on/off the session tree analysis window"))
1024    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1025                    checked = _has_legend_shown,
1026                    helptext = _("Toggle Legend on/off"))
1027    _method_command("database_management", _("&Database Connections..."),
1028                    "DatabaseManagement",
1029                    sensitive = _has_postgis_support)
1030    _method_command("exit", _("E&xit"), "Exit",
1031                    helptext = _("Finish working with Thuban"))
1032    
1033  # Help menu  # Help menu
1034  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1035                    helptext = _("Info about Thuban authors, version and modules"))
1036    
1037    
1038  # Map menu  # Map menu
1039  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1040                    helptext = _("Set or change the map projection"))
1041    
1042  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1043                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1044  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1045                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1046  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1047                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1048  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1049                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1050  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1051                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1052  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
1053  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1054                  sensitive = _has_visible_map)
1055    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1056                  helptext = _("Add/Remove labels"), icon = "label",
1057                  sensitive = _has_visible_map)
1058    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1059                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1060                  sensitive = _has_visible_map)
1061    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1062                    helptext = _("Zoom to the full layer extent"),
1063                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1064    _method_command("selected_full_extent", _("&Full selection extent"),
1065                    "FullSelectionExtent",
1066                    helptext = _("Zoom to the full selection extent"),
1067                    icon = "fullselextent", sensitive = _has_selected_shapes)
1068    _method_command("map_export", _("E&xport"), "ExportMap",
1069                    helptext = _("Export the map to file"))
1070    _method_command("map_print", _("Prin&t"), "PrintMap",
1071                    helptext = _("Print the map"))
1072    _method_command("map_rename", _("&Rename..."), "RenameMap",
1073                    helptext = _("Rename the map"))
1074    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1075                    helptext = _("Add a new layer to the map"))
1076    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1077                    helptext = _("Add a new image layer to the map"),
1078                    sensitive = _has_gdal_support)
1079    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1080                    helptext = _("Add a new database layer to active map"),
1081                    sensitive = _has_dbconnections)
1082    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1083                    helptext = _("Remove selected layer"),
1084                    sensitive = _can_remove_layer)
1085    
1086  # Layer menu  # Layer menu
1087  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1088                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1089  _method_command("layer_remove", "&Remove", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1090                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1091                    helptext = _("Duplicate selected layer"),
1092              sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1093    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1094                    helptext = _("Rename selected layer"),
1095                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1096  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1097                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Raise selected layer"),
1098                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1099  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1100                  "LayerTransparentFill",                  helptext = _("Lower selected layer"),
                 helptext = "Do not fill the selected layer(s)",  
1101                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1102  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_show", _("&Show"), "ShowLayer",
1103                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Make selected layer visible"),
1104                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1105  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1106                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer unvisible"),
1107                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1108  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1109                  helptext = "Raise selected layer(s)",                  helptext = _("Show the selected layer's table"),
                 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",  
1110                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1111    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1112                    sensitive = _has_selected_layer,
1113                    helptext = _("Edit the properties of the selected layer"))
1114    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1115                    sensitive = _has_selected_layer,
1116                    helptext = _("Join and attach a table to the selected layer"))
1117    
1118    def _can_unjoin(context):
1119        """Return whether the Layer/Unjoin command can be executed.
1120    
1121        This is the case if a layer is selected and that layer has a
1122        shapestore that has an original shapestore.
1123        """
1124        layer = context.mainwindow.SelectedLayer()
1125        if layer is None:
1126            return 0
1127        getstore = getattr(layer, "ShapeStore", None)
1128        if getstore is not None:
1129            return getstore().OrigShapeStore() is not None
1130        else:
1131            return 0
1132    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1133                    sensitive = _can_unjoin,
1134                    helptext = _("Undo the last join operation"))
1135    
1136    
1137    def _has_tables(context):
1138        return bool(context.session.Tables())
1139    
1140    # Table menu
1141    _method_command("table_open", _("&Open..."), "TableOpen",
1142                    helptext = _("Open a DBF-table from a file"))
1143    _method_command("table_close", _("&Close..."), "TableClose",
1144           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1145                    helptext = _("Close one or more tables from a list"))
1146    _method_command("table_rename", _("&Rename..."), "TableRename",
1147                    sensitive = _has_tables,
1148                    helptext = _("Rename one or more tables"))
1149    _method_command("table_show", _("&Show..."), "TableShow",
1150                    sensitive = _has_tables,
1151                    helptext = _("Show one or more tables in a dialog"))
1152    _method_command("table_join", _("&Join..."), "TableJoin",
1153                    sensitive = _has_tables,
1154                    helptext = _("Join two tables creating a new one"))
1155    
1156    #  Export only under Windows ...
1157    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1158                            None,
1159                            "map_rename",
1160                            "map_projection",
1161                            None,
1162                            "map_zoom_in_tool", "map_zoom_out_tool",
1163                            "map_pan_tool",
1164                            "map_full_extent",
1165                            "layer_full_extent",
1166                            "selected_full_extent",
1167                            None,
1168                            "map_identify_tool", "map_label_tool",
1169                            None,
1170                            "toggle_legend",
1171                            None]
1172    if wxPlatform == '__WXMSW__':
1173        map_menu.append("map_export")
1174    map_menu.append("map_print")
1175    
1176    # the menu structure
1177    main_menu = Menu("<main>", "<main>",
1178                     [Menu("file", _("&File"),
1179                           ["new_session", "open_session", None,
1180                            "save_session", "save_session_as", None,
1181                            "database_management", None,
1182                            "toggle_session_tree", None,
1183                            "exit"]),
1184                      Menu("map", _("&Map"), map_menu),
1185                      Menu("layer", _("&Layer"),
1186                           ["layer_rename", "layer_duplicate",
1187                            None,
1188                            "layer_raise", "layer_lower",
1189                            None,
1190                            "layer_show", "layer_hide",
1191                            None,
1192                            "layer_projection",
1193                            None,
1194                            "layer_show_table",
1195                            "layer_jointable",
1196                            "layer_unjointable",
1197                            None,
1198                            "layer_properties"]),
1199                      Menu("table", _("&Table"),
1200                           ["table_open", "table_close", "table_rename",
1201                           None,
1202                           "table_show",
1203                           None,
1204                           "table_join"]),
1205                      Menu("help", _("&Help"),
1206                           ["help_about"])])
1207    
1208    # the main toolbar
1209    
1210    main_toolbar = Menu("<toolbar>", "<toolbar>",
1211                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1212                         "map_full_extent",
1213                         "layer_full_extent",
1214                         "selected_full_extent",
1215                         None,
1216                         "map_identify_tool", "map_label_tool"])
1217    
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