/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 18 by bh, Mon Sep 3 16:25:09 2001 UTC revision 2186 by jan, Sun Apr 18 20:37:01 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  
   
   
 # 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):  
         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)          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):
306            """Run a modal message box with the given text, title and flags
307            and return the result"""
308            dlg = wxMessageDialog(self, text, title, flags)
309            dlg.CenterOnParent()
310            result = dlg.ShowModal()
311            dlg.Destroy()
312            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:                                 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  
             dlg = wxMessageDialog(self,  
                                   ("The session has been modified."  
                                    " Do you want to save it?"),  
                                   "Exit", flags)  
             result = dlg.ShowModal()  
             dlg.Destroy()  
             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          dlg = wxMessageDialog(self,          dlg = About(self)
                               ("Thuban is a program for\n"  
                                "exploring geographic data.\n"  
                                "Copyright (C) 2001 Intevation GmbH.\n"  
                                "Thuban is licensed under the GPL"),  
                               "About", wxOK | wxICON_INFORMATION)  
461          dlg.ShowModal()          dlg.ShowModal()
462          dlg.Destroy()          dlg.Destroy()
463    
464        def DatabaseManagement(self):
465            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:
512                    layer = RasterLayer(title, filename)
513                except IOError:
514                    # the layer couldn't be opened
515                    self.RunMessageBox(_("Add Image Layer"),
516                                       _("Can't open the file '%s'.") % filename)
517                else:
518                    map.AddLayer(layer)
519                    if not has_layers:
520                        # if we're adding a layer to an empty map, fit the
521                        # new map to the window
522                        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)              map.AddLayer(layer)
552              if not has_layers:              if not has_layers:
                 # if we're adding a layer to an empty map, for the new  
                 # map to the window  
553                  self.canvas.FitMapToWindow()                  self.canvas.FitMapToWindow()
554    
555          dlg.Destroy()          dlg.Destroy()
556    
557      def RemoveLayer(self):      def RemoveLayer(self):
558          layer = self.current_layer()          layer = self.current_layer()
559          if layer is not None:          if layer is not None:
560              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
561          else:  
562              dlg = wxMessageDialog(self, "No layer is selected.\n",      def CanRemoveLayer(self):
563                                    "Remove layer", wxOK | wxICON_INFORMATION)          """Return true if the currently selected layer can be deleted.
564              dlg.ShowModal()  
565              dlg.Destroy()          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 LayerToTop(self):
576            layer = self.current_layer()
577            if layer is not None:
578                self.canvas.Map().MoveLayerToTop(layer)
579    
580      def RaiseLayer(self):      def RaiseLayer(self):
581          layer = self.current_layer()          layer = self.current_layer()
582          if layer is not None:          if layer is not None:
583              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
584            
585      def LowerLayer(self):      def LowerLayer(self):
586          layer = self.current_layer()          layer = self.current_layer()
587          if layer is not None:          if layer is not None:
588              self.canvas.Map().LowerLayer(layer)              self.canvas.Map().LowerLayer(layer)
589    
590        def LayerToBottom(self):
591            layer = self.current_layer()
592            if layer is not None:
593                self.canvas.Map().MoveLayerToBottom(layer)
594    
595      def current_layer(self):      def current_layer(self):
596          """Return the currently selected layer.          """Return the currently selected layer.
597    
598          If no layer is selected, return None          If no layer is selected, return None
599          """          """
600          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
601    
602      def has_selected_layer(self):      def has_selected_layer(self):
603          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
604          tree = main.app.tree.tree          return self.canvas.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
605    
606      def choose_color(self):      def has_selected_shape_layer(self):
607          """Run the color selection dialog and return the selected color.          """Return true if a shape layer is currently selected"""
608            return isinstance(self.current_layer(), Layer)
609          If the user cancels, return None.  
610          """      def has_selected_shapes(self):
611          dlg = wxColourDialog(self)          """Return true if a shape is currently selected"""
612          color = None          return self.canvas.HasSelectedShapes()
         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  
613    
614      def LayerFillColor(self):      def HideLayer(self):
615          layer = self.current_layer()          layer = self.current_layer()
616          if layer is not None:          if layer is not None:
617              color = self.choose_color()              layer.SetVisible(False)
             if color is not None:  
                 layer.SetFill(color)  
618    
619      def LayerTransparentFill(self):      def ShowLayer(self):
620          layer = self.current_layer()          layer = self.current_layer()
621          if layer is not None:          if layer is not None:
622              layer.SetFill(None)              layer.SetVisible(True)
623    
624      def LayerOutlineColor(self):      def ToggleLayerVisibility(self):
625          layer = self.current_layer()          layer = self.current_layer()
626          if layer is not None:          layer.SetVisible(not layer.Visible())
             color = self.choose_color()  
             if color is not None:  
                 layer.SetStroke(color)  
627    
628      def LayerNoOutline(self):      def DuplicateLayer(self):
629            """Ceate a new layer above the selected layer with the same shapestore
630            """
631          layer = self.current_layer()          layer = self.current_layer()
632          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
633              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
634                                  layer.ShapeStore(),
635                                  projection = layer.GetProjection())
636                new_classification = copy.deepcopy(layer.GetClassification())
637                new_layer.SetClassification(new_classification)
638                self.Map().AddLayer(new_layer)
639    
640      def HideLayer(self):      def CanDuplicateLayer(self):
641            """Return whether the DuplicateLayer method can create a duplicate"""
642          layer = self.current_layer()          layer = self.current_layer()
643          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
644              layer.SetVisible(0)  
645                def LayerShowTable(self):
646      def ShowLayer(self):          """
647            Present a TableView Window for the current layer.
648            In case the window is already open, bring it to the front.
649            In case, there is no active layer, do nothing.
650            In case, the layer has no ShapeStore, do nothing.
651            """
652          layer = self.current_layer()          layer = self.current_layer()
653          if layer is not None:          if layer is not None:
654              layer.SetVisible(1)              if not hasattr(layer, "ShapeStore"):
655                    return
656                table = layer.ShapeStore().Table()
657                name = "table_view" + str(id(table))
658                dialog = self.get_open_dialog(name)
659                if dialog is None:
660                    dialog = tableview.LayerTableFrame(self, name,
661                                             _("Layer Table: %s") % layer.Title(),
662                                             layer, table)
663                    self.add_dialog(name, dialog)
664                    dialog.Show(True)
665                else:
666                    dialog.Raise()
667    
668        def MapProjection(self):
669    
670            name = "map_projection"
671            dialog = self.get_open_dialog(name)
672    
673            if dialog is None:
674                map = self.canvas.Map()
675                dialog = projdialog.ProjFrame(self, name,
676                         _("Map Projection: %s") % map.Title(), map)
677                self.add_dialog(name, dialog)
678                dialog.Show()
679            dialog.Raise()
680    
681        def LayerProjection(self):
682    
683            layer = self.current_layer()
684    
685            name = "layer_projection" + str(id(layer))
686            dialog = self.get_open_dialog(name)
687    
688            if dialog is None:
689                map = self.canvas.Map()
690                dialog = projdialog.ProjFrame(self, name,
691                         _("Layer Projection: %s") % layer.Title(), layer)
692                self.add_dialog(name, dialog)
693                dialog.Show()
694            dialog.Raise()
695    
696        def LayerEditProperties(self):
697    
698            #
699            # the menu option for this should only be available if there
700            # is a current layer, so we don't need to check if the
701            # current layer is None
702            #
703    
     def LayerShowTable(self):  
704          layer = self.current_layer()          layer = self.current_layer()
705            self.OpenLayerProperties(layer)
706    
707        def OpenLayerProperties(self, layer, group = None):
708            name = "layer_properties" + str(id(layer))
709            dialog = self.get_open_dialog(name)
710    
711            if dialog is None:
712                dialog = Classifier(self, name, self.Map(), layer, group)
713                self.add_dialog(name, dialog)
714                dialog.Show()
715            dialog.Raise()
716    
717        def LayerJoinTable(self):
718            layer = self.canvas.SelectedLayer()
719          if layer is not None:          if layer is not None:
720              tv = tableview.TableFrame(self, layer.table)              dlg = JoinDialog(self, _("Join Layer with Table"),
721              tv.Show(true)                               self.application.session,
722                                 layer = layer)
723                dlg.ShowModal()
724    
725      def Projection(self):      def LayerUnjoinTable(self):
726          map = self.canvas.Map()          layer = self.canvas.SelectedLayer()
727          proj = map.projection          if layer is not None:
728          if proj is None:              orig_store = layer.ShapeStore().OrigShapeStore()
729              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)              if orig_store:
730          else:                  layer.SetShapeStore(orig_store)
731              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)  
732          if proj4Dlg.ShowModal() == wxID_OK:      def ShowLegend(self):
733              params = proj4Dlg.GetParams()          if not self.LegendShown():
734              if params is not None:              self.ToggleLegend()
735                  proj = Projection(params)  
736        def ToggleLegend(self):
737            """Show the legend if it's not shown otherwise hide it again"""
738            name = "legend"
739            dialog = self.FindRegisteredDock(name)
740    
741            if dialog is None:
742                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
743                legend.LegendPanel(dialog, None, self)
744                dialog.Dock()
745                dialog.GetPanel().SetMap(self.Map())
746                dialog.Show()
747            else:
748                dialog.Show(not dialog.IsShown())
749    
750        def LegendShown(self):
751            """Return true iff the legend is currently open"""
752            dialog = self.FindRegisteredDock("legend")
753            return dialog is not None and dialog.IsShown()
754    
755        def TableOpen(self):
756            dlg = wxFileDialog(self, _("Open Table"),
757                               self.application.Path("data"), "",
758                               _("DBF Files (*.dbf)") + "|*.dbf|" +
759                               #_("CSV Files (*.csv)") + "|*.csv|" +
760                               _("All Files (*.*)") + "|*.*",
761                               wxOPEN)
762            if dlg.ShowModal() == wxID_OK:
763                filename = dlg.GetPath()
764                dlg.Destroy()
765                try:
766                    table = self.application.session.OpenTableFile(filename)
767                except IOError:
768                    # the layer couldn't be opened
769                    self.RunMessageBox(_("Open Table"),
770                                       _("Can't open the file '%s'.") % filename)
771              else:              else:
772                  proj = None                  self.ShowTableView(table)
773              map.SetProjection(proj)                  self.application.SetPath("data",filename)
774          proj4Dlg.Destroy()  
775        def TableClose(self):
776            tables = self.application.session.UnreferencedTables()
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 tables to close:"),
782                                         _("Close 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                    self.application.session.RemoveTable(lst[i][1])
789    
790    
791        def TableShow(self):
792            """Offer a multi-selection dialog for tables to be displayed
793    
794            The windows for the selected tables are opened or brought to
795            the front.
796            """
797            tables = self.application.session.Tables()
798    
799            lst = [(t.Title(), t) for t in tables]
800            lst.sort()
801            titles = [i[0] for i in lst]
802            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
803                                         _("Show Table"), titles,
804                                         size = (400,300),
805                                         style = wxDEFAULT_DIALOG_STYLE |
806                                                 wxRESIZE_BORDER)
807            if (dlg.ShowModal() == wxID_OK):
808                for i in dlg.GetValue():
809                    # XXX: if the table belongs to a layer, open a
810                    # LayerTableFrame instead of QueryTableFrame
811                    self.ShowTableView(lst[i][1])
812    
813        def TableJoin(self):
814            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
815            dlg.ShowModal()
816    
817        def ShowTableView(self, table):
818            """Open a table view for the table and optionally"""
819            name = "table_view%d" % id(table)
820            dialog = self.get_open_dialog(name)
821            if dialog is None:
822                dialog = tableview.QueryTableFrame(self, name,
823                                                   _("Table: %s") % table.Title(),
824                                                   table)
825                self.add_dialog(name, dialog)
826                dialog.Show(True)
827            dialog.Raise()
828    
829        def TableRename(self):
830            """Let the user rename a table"""
831    
832            # First, let the user select a table
833            tables = self.application.session.Tables()
834            lst = [(t.Title(), t) for t in tables]
835            lst.sort()
836            titles = [i[0] for i in lst]
837            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
838                                         _("Rename Table"), titles,
839                                         size = (400,300),
840                                         style = wxDEFAULT_DIALOG_STYLE |
841                                                 wxRESIZE_BORDER)
842            if (dlg.ShowModal() == wxID_OK):
843                to_rename = [lst[i][1] for i in dlg.GetValue()]
844                dlg.Destroy()
845            else:
846                to_rename = []
847    
848            # Second, let the user rename the layers
849            for table in to_rename:
850                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
851                                        table.Title())
852                try:
853                    if dlg.ShowModal() == wxID_OK:
854                        title = dlg.GetValue()
855                        if title != "":
856                            table.SetTitle(title)
857    
858                            # Make sure the session is marked as modified.
859                            # FIXME: This should be handled automatically,
860                            # but that requires more changes to the tables
861                            # than I have time for currently.
862                            self.application.session.changed()
863                finally:
864                    dlg.Destroy()
865    
866    
867      def ZoomInTool(self):      def ZoomInTool(self):
868          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 377  class MainWindow(wxFrame): Line 874  class MainWindow(wxFrame):
874          self.canvas.PanTool()          self.canvas.PanTool()
875    
876      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)  
877          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
878            self.identify_view_on_demand(None, None)
879    
880      def LabelTool(self):      def LabelTool(self):
881          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 388  class MainWindow(wxFrame): Line 883  class MainWindow(wxFrame):
883      def FullExtent(self):      def FullExtent(self):
884          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
885    
886        def FullLayerExtent(self):
887            self.canvas.FitLayerToWindow(self.current_layer())
888    
889        def FullSelectionExtent(self):
890            self.canvas.FitSelectedToWindow()
891    
892        def ExportMap(self):
893            self.canvas.Export()
894    
895      def PrintMap(self):      def PrintMap(self):
896          self.canvas.Print()          self.canvas.Print()
897    
898        def RenameMap(self):
899            dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
900                                    self.Map().Title())
901            if dlg.ShowModal() == wxID_OK:
902                title = dlg.GetValue()
903                if title != "":
904                    self.Map().SetTitle(title)
905    
906            dlg.Destroy()
907    
908        def RenameLayer(self):
909            """Let the user rename the currently selected layer"""
910            layer = self.current_layer()
911            if layer is not None:
912                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
913                                        layer.Title())
914                try:
915                    if dlg.ShowModal() == wxID_OK:
916                        title = dlg.GetValue()
917                        if title != "":
918                            layer.SetTitle(title)
919                finally:
920                    dlg.Destroy()
921    
922        def identify_view_on_demand(self, layer, shapes):
923            """Subscribed to the canvas' SHAPES_SELECTED message
924    
925            If the current tool is the identify tool, at least one shape is
926            selected and the identify dialog is not shown, show the dialog.
927            """
928            # If the selection has become empty we don't need to do
929            # anything. Otherwise it could happen that the dialog was popped
930            # up when the selection became empty, e.g. when a new selection
931            # is opened while the identify tool is active and dialog had
932            # been closed
933            if not shapes:
934                return
935    
936            name = "identify_view"
937            if self.canvas.CurrentTool() == "IdentifyTool":
938                if not self.dialog_open(name):
939                    dialog = identifyview.IdentifyView(self, name)
940                    self.add_dialog(name, dialog)
941                    dialog.Show(True)
942                else:
943                    # FIXME: bring dialog to front?
944                    pass
945    
946        def title_changed(self, map):
947            """Subscribed to the canvas' TITLE_CHANGED messages"""
948            self.update_title()
949    
950        def update_title(self):
951            """Update the window's title according to it's current state.
952    
953            In this default implementation the title is 'Thuban - ' followed
954            by the map's title or simply 'Thuban' if there is not map.
955            Derived classes should override this method to get different
956            titles.
957    
958            This method is called automatically by other methods when the
959            title may have to change. For the methods implemented in this
960            class this usually only means that a different map has been set
961            or the current map's title has changed.
962            """
963            map = self.Map()
964            if map is not None:
965                title = _("Thuban - %s") % (map.Title(),)
966            else:
967                title = _("Thuban")
968            self.SetTitle(title)
969    
970    
971  #  #
972  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 399  class MainWindow(wxFrame): Line 975  class MainWindow(wxFrame):
975    
976  # Helper functions to define common command implementations  # Helper functions to define common command implementations
977  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
978      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
979      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
980    
981  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
982      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
983        """Add a command implemented by a method of the mainwindow object"""
984      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
985                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
986                             sensitive = sensitive, checked = checked))
987    
988    def make_check_current_tool(toolname):
989        """Return a function that tests if the currently active tool is toolname
990    
991        The returned function can be called with the context and returns
992        true iff the currently active tool's name is toolname. It's directly
993        usable as the 'checked' callback of a command.
994        """
995        def check_current_tool(context, name=toolname):
996            return context.mainwindow.canvas.CurrentTool() == name
997        return check_current_tool
998    
999  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
1000                    icon = ""):                    icon = "", sensitive = None):
1001      """Add a tool command"""      """Add a tool command"""
1002      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
1003          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
1004      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
1005                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
1006    
1007  def _has_selected_layer(context):  def _has_selected_layer(context):
1008      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
1009      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
1010    
1011    def _has_selected_layer_visible(context):
1012        """Return true if a layer is selected in the context which is
1013        visible."""
1014        if context.mainwindow.has_selected_layer():
1015            layer = context.mainwindow.current_layer()
1016            if layer.Visible(): return True
1017        return False
1018    
1019    def _has_selected_shape_layer(context):
1020        """Return true if a shape layer is selected in the context"""
1021        return context.mainwindow.has_selected_shape_layer()
1022    
1023    def _has_selected_shapes(context):
1024        """Return true if a layer is selected in the context"""
1025        return context.mainwindow.has_selected_shapes()
1026    
1027    def _can_remove_layer(context):
1028        return context.mainwindow.CanRemoveLayer()
1029    
1030    def _has_tree_window_shown(context):
1031        """Return true if the tree window is shown"""
1032        return context.mainwindow.SessionTreeShown()
1033    
1034    def _has_visible_map(context):
1035        """Return true iff theres a visible map in the mainwindow.
1036    
1037        A visible map is a map with at least one visible layer."""
1038        map = context.mainwindow.Map()
1039        if map is not None:
1040            for layer in map.Layers():
1041                if layer.Visible():
1042                    return True
1043        return False
1044    
1045    def _has_legend_shown(context):
1046        """Return true if the legend window is shown"""
1047        return context.mainwindow.LegendShown()
1048    
1049    def _has_gdal_support(context):
1050        """Return True if the GDAL is available"""
1051        return Thuban.Model.resource.has_gdal_support()
1052    
1053    def _has_dbconnections(context):
1054        """Return whether the the session has database connections"""
1055        return context.session.HasDBConnections()
1056    
1057    def _has_postgis_support(context):
1058        return has_postgis_support()
1059    
1060    
1061  # File menu  # File menu
1062  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1063  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
1064  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1065  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
1066  _method_command("exit", "&Exit", "Exit")  _method_command("save_session", _("&Save Session"), "SaveSession",
1067                    helptext =_("Save this session to the file it was opened from"))
1068    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1069                    helptext = _("Save this session to a new file"))
1070    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1071                    checked = _has_tree_window_shown,
1072                    helptext = _("Toggle on/off the session tree analysis window"))
1073    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1074                    checked = _has_legend_shown,
1075                    helptext = _("Toggle Legend on/off"))
1076    _method_command("database_management", _("&Database Connections..."),
1077                    "DatabaseManagement",
1078                    sensitive = _has_postgis_support)
1079    _method_command("exit", _("E&xit"), "Exit",
1080                    helptext = _("Finish working with Thuban"))
1081    
1082  # Help menu  # Help menu
1083  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1084                    helptext = _("Info about Thuban authors, version and modules"))
1085    
1086    
1087  # Map menu  # Map menu
1088  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1089                    helptext = _("Set or change the map projection"))
1090    
1091  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1092                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1093  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1094                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1095  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1096                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1097  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1098                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1099  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1100                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1101  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
1102  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1103                  sensitive = _has_visible_map)
1104    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1105                  helptext = _("Add/Remove labels"), icon = "label",
1106                  sensitive = _has_visible_map)
1107    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1108                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1109                  sensitive = _has_visible_map)
1110    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1111                    helptext = _("Zoom to the full layer extent"),
1112                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1113    _method_command("selected_full_extent", _("&Full selection extent"),
1114                    "FullSelectionExtent",
1115                    helptext = _("Zoom to the full selection extent"),
1116                    icon = "fullselextent", sensitive = _has_selected_shapes)
1117    _method_command("map_export", _("E&xport"), "ExportMap",
1118                    helptext = _("Export the map to file"))
1119    _method_command("map_print", _("Prin&t"), "PrintMap",
1120                    helptext = _("Print the map"))
1121    _method_command("map_rename", _("&Rename..."), "RenameMap",
1122                    helptext = _("Rename the map"))
1123    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1124                    helptext = _("Add a new layer to the map"))
1125    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1126                    helptext = _("Add a new image layer to the map"),
1127                    sensitive = _has_gdal_support)
1128    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1129                    helptext = _("Add a new database layer to active map"),
1130                    sensitive = _has_dbconnections)
1131    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1132                    helptext = _("Remove selected layer"),
1133                    sensitive = _can_remove_layer)
1134    
1135  # Layer menu  # Layer menu
1136  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1137                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1138  _method_command("layer_remove", "&Remove", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1139                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1140                    helptext = _("Duplicate selected layer"),
1141              sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1142    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1143                    helptext = _("Rename selected layer"),
1144                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1145  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1146                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Raise selected layer"),
1147                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1148  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1149                  "LayerTransparentFill",                  helptext = _("Lower selected layer"),
                 helptext = "Do not fill the selected layer(s)",  
1150                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1151  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_show", _("&Show"), "ShowLayer",
1152                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Make selected layer visible"),
1153                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1154  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1155                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer unvisible"),
1156                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1157  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1158                  helptext = "Raise selected layer(s)",                  helptext = _("Show the selected layer's table"),
1159                    sensitive = _has_selected_shape_layer)
1160    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1161                    sensitive = _has_selected_layer,
1162                    helptext = _("Edit the properties of the selected layer"))
1163    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1164                    sensitive = _has_selected_shape_layer,
1165                    helptext = _("Join and attach a table to the selected layer"))
1166    
1167    # further layer methods:
1168    _method_command("layer_to_top", _("&Top"), "LayerToTop",
1169                    helptext = _("Put selected layer to the top"),
1170                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1171  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_to_bottom", _("&Bottom"), "LayerToBottom",
1172                  helptext = "Lower selected layer(s)",                  helptext = _("Put selected layer to the bottom"),
1173                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1174  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_visibility", _("&Visible"), "ToggleLayerVisibility",
1175                  helptext = "Make selected layer(s) visible",                  checked = _has_selected_layer_visible,
1176                  sensitive = _has_selected_layer)                  helptext = _("Toggle visibility of 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",  
1177                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1178    
1179    def _can_unjoin(context):
1180        """Return whether the Layer/Unjoin command can be executed.
1181    
1182        This is the case if a layer is selected and that layer has a
1183        shapestore that has an original shapestore.
1184        """
1185        layer = context.mainwindow.SelectedLayer()
1186        if layer is None:
1187            return 0
1188        getstore = getattr(layer, "ShapeStore", None)
1189        if getstore is not None:
1190            return getstore().OrigShapeStore() is not None
1191        else:
1192            return 0
1193    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1194                    sensitive = _can_unjoin,
1195                    helptext = _("Undo the last join operation"))
1196    
1197    
1198    def _has_tables(context):
1199        return bool(context.session.Tables())
1200    
1201    # Table menu
1202    _method_command("table_open", _("&Open..."), "TableOpen",
1203                    helptext = _("Open a DBF-table from a file"))
1204    _method_command("table_close", _("&Close..."), "TableClose",
1205           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1206                    helptext = _("Close one or more tables from a list"))
1207    _method_command("table_rename", _("&Rename..."), "TableRename",
1208                    sensitive = _has_tables,
1209                    helptext = _("Rename one or more tables"))
1210    _method_command("table_show", _("&Show..."), "TableShow",
1211                    sensitive = _has_tables,
1212                    helptext = _("Show one or more tables in a dialog"))
1213    _method_command("table_join", _("&Join..."), "TableJoin",
1214                    sensitive = _has_tables,
1215                    helptext = _("Join two tables creating a new one"))
1216    
1217    #  Export only under Windows ...
1218    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1219                            None,
1220                            "map_rename",
1221                            "map_projection",
1222                            None,
1223                            "map_zoom_in_tool", "map_zoom_out_tool",
1224                            "map_pan_tool",
1225                            "map_full_extent",
1226                            "layer_full_extent",
1227                            "selected_full_extent",
1228                            None,
1229                            "map_identify_tool", "map_label_tool",
1230                            None,
1231                            "toggle_legend",
1232                            None]
1233    if wxPlatform == '__WXMSW__':
1234        map_menu.append("map_export")
1235    map_menu.append("map_print")
1236    
1237    # the menu structure
1238    main_menu = Menu("<main>", "<main>",
1239                     [Menu("file", _("&File"),
1240                           ["new_session", "open_session", None,
1241                            "save_session", "save_session_as", None,
1242                            "database_management", None,
1243                            "toggle_session_tree", None,
1244                            "exit"]),
1245                      Menu("map", _("&Map"), map_menu),
1246                      Menu("layer", _("&Layer"),
1247                           ["layer_rename", "layer_duplicate",
1248                            None,
1249                            "layer_raise", "layer_lower",
1250                            None,
1251                            "layer_show", "layer_hide",
1252                            None,
1253                            "layer_projection",
1254                            None,
1255                            "layer_show_table",
1256                            "layer_jointable",
1257                            "layer_unjointable",
1258                            None,
1259                            "layer_properties"]),
1260                      Menu("table", _("&Table"),
1261                           ["table_open", "table_close", "table_rename",
1262                           None,
1263                           "table_show",
1264                           None,
1265                           "table_join"]),
1266                      Menu("help", _("&Help"),
1267                           ["help_about"])])
1268    
1269    # the main toolbar
1270    
1271    main_toolbar = Menu("<toolbar>", "<toolbar>",
1272                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1273                         "map_full_extent",
1274                         "layer_full_extent",
1275                         "selected_full_extent",
1276                         None,
1277                         "map_identify_tool", "map_label_tool"])
1278    
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