/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 84 by bh, Wed Apr 3 15:21:46 2002 UTC revision 1644 by bh, Mon Aug 25 12:44:55 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    from wxPython.wx import __version__ as wxPython_version
23    
24  import Thuban  import Thuban
25  from Thuban.Model.session import Session, create_empty_session  import Thuban.version
26  from Thuban.Model.map import Map  
27  from Thuban.Model.layer import Layer  from Thuban import _
28  from Thuban.Model.color import Color  from Thuban.Model.session import create_empty_session
29  from Thuban.Model.proj import Projection  from Thuban.Model.layer import Layer, RasterLayer
30    from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
31    # XXX: replace this by
32    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
33    # when Thuban does not support wxPython 2.4.0 any more.
34    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
35    
36  import view  import view
37  import tree  import tree
 import proj4dialog  
38  import tableview, identifyview  import tableview, identifyview
39    from Thuban.UI.classifier import Classifier
40    import legend
41    from menu import Menu
42    
43    from context import Context
44    from command import registry, Command, ToolCommand
45    from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
46         MAP_REPLACED
47    from about import About
48    
49    from Thuban.UI.dock import DockFrame
50    from Thuban.UI.join import JoinDialog
51    from Thuban.UI.dbdialog import DBFrame, ChooseDBTableDialog
52    import resource
53    import Thuban.Model.resource
54    
55    import projdialog
56    
57    
58    class MainWindow(DockFrame):
59    
60        # Some messages that can be subscribed/unsubscribed directly through
61        # the MapCanvas come in fact from other objects. This is a map to
62        # map those messages to the names of the instance variables they
63        # actually come from. This delegation is implemented in the
64        # Subscribe and unsubscribed methods
65        delegated_messages = {LAYER_SELECTED: "canvas",
66                              SHAPES_SELECTED: "canvas",
67                              MAP_REPLACED: "canvas"}
68    
69        # Methods delegated to some instance variables. The delegation is
70        # implemented in the __getattr__ method.
71        delegated_methods = {"SelectLayer": "canvas",
72                             "SelectShapes": "canvas",
73                             "SelectedLayer": "canvas",
74                             "SelectedShapes": "canvas",
75                             }
76    
77        def __init__(self, parent, ID, title, application, interactor,
78                     initial_message = None, size = wxSize(-1, -1)):
79            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
80            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
81    
82  import main          self.application = application
 from command import registry, Command  
 from messages import SELECTED_SHAPE  
   
   
 # the directory where the toolbar icons are stored  
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
   
   
 class MainWindow(wxFrame):  
   
     def __init__(self, parent, ID, interactor):  
         wxFrame.__init__(self, parent, ID, 'Thuban',  
                          wxDefaultPosition, wxSize(400, 300))  
   
         self.interactor = interactor  
83    
84          self.CreateStatusBar()          self.CreateStatusBar()
85          self.SetStatusText("This is the wxPython-based "          if initial_message:
86                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
87    
88          self.identify_view = None          self.identify_view = None
89    
90          self.init_ids()          self.init_ids()
91    
92          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
93            self.SetMenuBar(self.build_menu_bar(main_menu))
         menu = wxMenu()  
         menuBar.Append(menu, "&File");  
         for name in ["new_session", "open_session", None,  
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["layer_add", "layer_remove",  
                      None,  
                      "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_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)  
   
         # set the size of the tools' bitmaps. Not needed on wxGTK, but  
         # on Windows. We probably shouldn't hardwire the bitmap size  
         # here  
         toolbar.SetToolBitmapSize(wxSize(24, 24))  
94    
95          for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",          # Similarly, create the toolbar from main_toolbar
96                       "map_identify_tool", "map_label_tool"]:          toolbar = self.build_toolbar(main_toolbar)
             self.add_toolbar_command(toolbar, name)  
97          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
98          toolbar.Realize()          toolbar.Realize()
99    
100    
101          # Create the map canvas          # Create the map canvas
102          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
103            canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
104            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
105          self.canvas = canvas          self.canvas = canvas
106    
107            self.SetMainWindow(self.canvas)
108    
109            self.SetAutoLayout(True)
110    
111          self.init_dialogs()          self.init_dialogs()
112    
113          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
114    
115          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
116    
117        def Subscribe(self, channel, *args):
118            """Subscribe a function to a message channel.
119    
120            If channel is one of the delegated messages call the appropriate
121            object's Subscribe method. Otherwise do nothing.
122            """
123            if channel in self.delegated_messages:
124                object = getattr(self, self.delegated_messages[channel])
125                object.Subscribe(channel, *args)
126            else:
127                print "Trying to subscribe to unsupported channel %s" % channel
128    
129        def Unsubscribe(self, channel, *args):
130            """Unsubscribe a function from a message channel.
131    
132            If channel is one of the delegated messages call the appropriate
133            object's Unsubscribe method. Otherwise do nothing.
134            """
135            if channel in self.delegated_messages:
136                object = getattr(self, self.delegated_messages[channel])
137                object.Unsubscribe(channel, *args)
138    
139        def __getattr__(self, attr):
140            """If attr is one of the delegated methods return that method
141    
142            Otherwise raise AttributeError.
143            """
144            if attr in self.delegated_methods:
145                return getattr(getattr(self, self.delegated_methods[attr]), attr)
146            raise AttributeError(attr)
147    
148      def init_ids(self):      def init_ids(self):
149          """Initialize the ids"""          """Initialize the ids"""
150          self.current_id = 6000          self.current_id = 6000
151          self.id_to_name = {}          self.id_to_name = {}
152          self.name_to_id = {}          self.name_to_id = {}
153            self.events_bound = {}
154    
155      def get_id(self, name):      def get_id(self, name):
156          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 136  class MainWindow(wxFrame): Line 163  class MainWindow(wxFrame):
163              self.name_to_id[name] = ID              self.name_to_id[name] = ID
164              self.id_to_name[ID] = name              self.id_to_name[ID] = name
165          return ID          return ID
166            
167        def bind_command_events(self, command, ID):
168            """Bind the necessary events for the given command and ID"""
169            if not self.events_bound.has_key(ID):
170                # the events haven't been bound yet
171                EVT_MENU(self, ID, self.invoke_command)
172                if command.IsDynamic():
173                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
174    
175        def build_menu_bar(self, menudesc):
176            """Build and return the menu bar from the menu description"""
177            menu_bar = wxMenuBar()
178    
179            for item in menudesc.items:
180                # here the items must all be Menu instances themselves
181                menu_bar.Append(self.build_menu(item), item.title)
182    
183            return menu_bar
184    
185        def build_menu(self, menudesc):
186            """Return a wxMenu built from the menu description menudesc"""
187            wxmenu = wxMenu()
188            last = None
189            for item in menudesc.items:
190                if item is None:
191                    # a separator. Only add one if the last item was not a
192                    # separator
193                    if last is not None:
194                        wxmenu.AppendSeparator()
195                elif isinstance(item, Menu):
196                    # a submenu
197                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
198                else:
199                    # must the name the name of a command
200                    self.add_menu_command(wxmenu, item)
201                last = item
202            return wxmenu
203    
204        def build_toolbar(self, toolbardesc):
205            """Build and return the main toolbar window from a toolbar description
206    
207            The parameter should be an instance of the Menu class but it
208            should not contain submenus.
209            """
210            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
211    
212            # set the size of the tools' bitmaps. Not needed on wxGTK, but
213            # on Windows, although it doesn't work very well there. It seems
214            # that only 16x16 icons are really supported on windows.
215            # We probably shouldn't hardwire the bitmap size here.
216            toolbar.SetToolBitmapSize(wxSize(24, 24))
217    
218            for item in toolbardesc.items:
219                if item is None:
220                    toolbar.AddSeparator()
221                else:
222                    # assume it's a string.
223                    self.add_toolbar_command(toolbar, item)
224    
225            return toolbar
226    
227      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
228          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
229    
# Line 150  class MainWindow(wxFrame): Line 237  class MainWindow(wxFrame):
237                  ID = self.get_id(name)                  ID = self.get_id(name)
238                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
239                              command.IsCheckCommand())                              command.IsCheckCommand())
240                  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)  
241              else:              else:
242                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
243    
244      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
245          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 169  class MainWindow(wxFrame): Line 254  class MainWindow(wxFrame):
254              command = registry.Command(name)              command = registry.Command(name)
255              if command is not None:              if command is not None:
256                  ID = self.get_id(name)                  ID = self.get_id(name)
257                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
258                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
259                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
260                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
261                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
262                    self.bind_command_events(command, ID)
263              else:              else:
264                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
265    
266        def Context(self):
267            """Return the context object for a command invoked from this window
268            """
269            return Context(self.application, self.application.Session(), self)
270    
271      def invoke_command(self, event):      def invoke_command(self, event):
272          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
273          if name is not None:          if name is not None:
274              command = registry.Command(name)              command = registry.Command(name)
275              command.Execute(self)              command.Execute(self.Context())
276          else:          else:
277              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
278    
279      def update_command_ui(self, event):      def update_command_ui(self, event):
280          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
281            context = self.Context()
282          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
283          if command is not None:          if command is not None:
284              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
285              event.SetText(command.DynText(self))              event.Enable(sensitive)
286                if command.IsTool() and not sensitive and command.Checked(context):
287                    # When a checked tool command is disabled deselect all
288                    # tools. Otherwise the tool would remain active but it
289                    # might lead to errors if the tools stays active. This
290                    # problem occurred in GREAT-ER and this fixes it, but
291                    # it's not clear to me whether this is really the best
292                    # way to do it (BH, 20021206).
293                    self.canvas.SelectTool(None)
294                event.SetText(command.DynText(context))
295              if command.IsCheckCommand():              if command.IsCheckCommand():
296                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
297    
298      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
299          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
300          and return the result"""          and return the result"""
301          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
302            dlg.CenterOnParent()
303          result = dlg.ShowModal()          result = dlg.ShowModal()
304          dlg.Destroy()          dlg.Destroy()
305          return result          return result
# Line 211  class MainWindow(wxFrame): Line 313  class MainWindow(wxFrame):
313    
314      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
315          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
316              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
317          self.dialogs[name] = dialog          self.dialogs[name] = dialog
318    
319      def dialog_open(self, name):      def dialog_open(self, name):
# Line 223  class MainWindow(wxFrame): Line 325  class MainWindow(wxFrame):
325      def get_open_dialog(self, name):      def get_open_dialog(self, name):
326          return self.dialogs.get(name)          return self.dialogs.get(name)
327    
328        def view_position_changed(self):
329            pos = self.canvas.CurrentPosition()
330            if pos is not None:
331                text = "(%10.10g, %10.10g)" % pos
332            else:
333                text = ""
334            self.set_position_text(text)
335    
336        def set_position_text(self, text):
337            """Set the statusbar text showing the current position.
338    
339            By default the text is shown in field 0 of the status bar.
340            Override this method in derived classes to put it into a
341            different field of the statusbar.
342            """
343            self.SetStatusText(text)
344    
345      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
346          """If the current session has been modified, ask the user          """If the current session has been modified, ask the user
347          whether to save it and do so if requested. Return the outcome of          whether to save it and do so if requested. Return the outcome of
# Line 232  class MainWindow(wxFrame): Line 351  class MainWindow(wxFrame):
351          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
352          a cancel button, otherwise not.          a cancel button, otherwise not.
353          """          """
354          if main.app.session.WasModified():          if self.application.session.WasModified():
355              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
356              if can_veto:              if can_veto:
357                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
358              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
359                                          ("The session has been modified."                                          _("The session has been modified."
360                                           " Do you want to save it?"),                                           " Do you want to save it?"),
361                                          flags)                                          flags)
362              if result == wxID_YES:              if result == wxID_YES:
# Line 247  class MainWindow(wxFrame): Line 366  class MainWindow(wxFrame):
366          return result          return result
367    
368      def NewSession(self):      def NewSession(self):
369          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
370          main.app.SetSession(create_empty_session())              self.application.SetSession(create_empty_session())
371    
372      def OpenSession(self):      def OpenSession(self):
373          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
374          dlg = wxFileDialog(self, "Select a session file", ".", "",              dlg = wxFileDialog(self, _("Open Session"), ".", "",
375                             "*.session", wxOPEN)                                 "Thuban Session File (*.thuban)|*.thuban",
376          if dlg.ShowModal() == wxID_OK:                                 wxOPEN)
377              main.app.OpenSession(dlg.GetPath())              if dlg.ShowModal() == wxID_OK:
378          dlg.Destroy()                  self.application.OpenSession(dlg.GetPath())
379                dlg.Destroy()
380    
381      def SaveSession(self):      def SaveSession(self):
382          main.app.SaveSession()          if self.application.session.filename == None:
383                self.SaveSessionAs()
384            else:
385                self.application.SaveSession()
386    
387      def SaveSessionAs(self):      def SaveSessionAs(self):
388          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
389                             "*.session", wxOPEN)                             "Thuban Session File (*.thuban)|*.thuban",
390                               wxSAVE|wxOVERWRITE_PROMPT)
391          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
392              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
393              main.app.SaveSession()              self.application.SaveSession()
394          dlg.Destroy()          dlg.Destroy()
395    
396      def Exit(self):      def Exit(self):
397          self.Close(false)          self.Close(False)
398    
399      def OnClose(self, event):      def OnClose(self, event):
400          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
401          if result == wxID_CANCEL:          if result == wxID_CANCEL:
402              event.Veto()              event.Veto()
403          else:          else:
404                # FIXME: it would be better to tie the unsubscription to
405                # wx's destroy event, but that isn't implemented for wxGTK
406                # yet.
407                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
408                DockFrame.OnClose(self, event)
409                for dlg in self.dialogs.values():
410                    dlg.Destroy()
411                self.canvas.Destroy()
412              self.Destroy()              self.Destroy()
413    
414      def SetMap(self, map):      def SetMap(self, map):
415          self.canvas.SetMap(map)          self.canvas.SetMap(map)
416            self.__SetTitle(map.Title())
417    
418            dialog = self.FindRegisteredDock("legend")
419            if dialog is not None:
420                dialog.GetPanel().SetMap(self.Map())
421    
422      def ShowSessionTree(self):      def Map(self):
423            """Return the map displayed by this mainwindow"""
424    
425            return self.canvas.Map()
426    
427        def ToggleSessionTree(self):
428            """If the session tree is shown close it otherwise create a new tree"""
429          name = "session_tree"          name = "session_tree"
430          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
431          if dialog is None:          if dialog is None:
432              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
433              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
434              dialog.Show(true)              dialog.Show(True)
435          else:          else:
436              # FIXME: bring dialog to front here              dialog.Close()
437              pass  
438        def SessionTreeShown(self):
439            """Return true iff the session tree is currently shown"""
440            return self.get_open_dialog("session_tree") is not None
441    
442      def About(self):      def About(self):
443          self.RunMessageBox("About",          dlg = About(self)
444                             ("Thuban is a program for\n"          dlg.ShowModal()
445                              "exploring geographic data.\n"          dlg.Destroy()
446                              "Copyright (C) 2001 Intevation GmbH.\n"  
447                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
448                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
449            dialog = self.get_open_dialog(name)
450            if dialog is None:
451                map = self.canvas.Map()
452                dialog = DBFrame(self, name, self.application.Session())
453                self.add_dialog(name, dialog)
454                dialog.Show()
455            dialog.Raise()
456    
457      def AddLayer(self):      def AddLayer(self):
458          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"), ".", "",
459                               _("Shapefiles (*.shp)") + "|*.shp|" +
460                               _("All Files (*.*)") + "|*.*",
461                               wxOPEN | wxMULTIPLE)
462            if dlg.ShowModal() == wxID_OK:
463                filenames = dlg.GetPaths()
464                for filename in filenames:
465                    title = os.path.splitext(os.path.basename(filename))[0]
466                    map = self.canvas.Map()
467                    has_layers = map.HasLayers()
468                    try:
469                        store = self.application.Session().OpenShapefile(filename)
470                    except IOError:
471                        # the layer couldn't be opened
472                        self.RunMessageBox(_("Add Layer"),
473                                           _("Can't open the file '%s'.")%filename)
474                    else:
475                        layer = Layer(title, store)
476                        map.AddLayer(layer)
477                        if not has_layers:
478                            # if we're adding a layer to an empty map, fit the
479                            # new map to the window
480                            self.canvas.FitMapToWindow()
481            dlg.Destroy()
482    
483        def AddRasterLayer(self):
484            dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",
485                             wxOPEN)                             wxOPEN)
486          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
487              filename = dlg.GetPath()              filename = dlg.GetPath()
488              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
489              map = self.canvas.Map()              map = self.canvas.Map()
490              has_layers = map.HasLayers()              has_layers = map.HasLayers()
491              try:              try:
492                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
493              except IOError:              except IOError:
494                  # the layer couldn't be opened                  # the layer couldn't be opened
495                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
496                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
497              else:              else:
498                    map.AddLayer(layer)
499                  if not has_layers:                  if not has_layers:
500                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
501                      # new map to the window                      # new map to the window
502                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
503          dlg.Destroy()          dlg.Destroy()
504    
505        def AddDBLayer(self):
506            """Add a layer read from a database"""
507            session = self.application.Session()
508            dlg = ChooseDBTableDialog(self.application.Session(), self,-1, "")
509    
510            if dlg.ShowModal() == wxID_OK:
511                dbconn, dbtable = dlg.GetTable()
512                try:
513                    title = str(dbtable)
514    
515                    # Chose the correct Interface for the database type
516                    store = PostGISShapeStore(dbconn, dbtable)
517                    session.AddShapeStore(store)
518                    layer = Layer(title, store)
519                except:
520                    # Some error occured while initializing the layer
521                    self.RunMessageBox(_("Add Layer from database"),
522                                       _("Can't open the database table '%s'")
523                                       % dbtable)
524    
525                map = self.canvas.Map()
526    
527                has_layers = map.HasLayers()
528                map.AddLayer(layer)
529                if not has_layers:
530                    self.canvas.FitMapToWindow()
531    
532            dlg.Destroy()
533    
534      def RemoveLayer(self):      def RemoveLayer(self):
535          layer = self.current_layer()          layer = self.current_layer()
536          if layer is not None:          if layer is not None:
537              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
538    
539        def CanRemoveLayer(self):
540            """Return true if the currently selected layer can be deleted.
541    
542            If no layer is selected return False.
543    
544            The return value of this method determines whether the remove
545            layer command is sensitive in menu.
546            """
547            layer = self.current_layer()
548            if layer is not None:
549                return self.canvas.Map().CanRemoveLayer(layer)
550            return False
551    
552      def RaiseLayer(self):      def RaiseLayer(self):
553          layer = self.current_layer()          layer = self.current_layer()
554          if layer is not None:          if layer is not None:
555              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
556            
557      def LowerLayer(self):      def LowerLayer(self):
558          layer = self.current_layer()          layer = self.current_layer()
559          if layer is not None:          if layer is not None:
# Line 343  class MainWindow(wxFrame): Line 564  class MainWindow(wxFrame):
564    
565          If no layer is selected, return None          If no layer is selected, return None
566          """          """
567          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
568    
569      def has_selected_layer(self):      def has_selected_layer(self):
570          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
571          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
   
     def choose_color(self):  
         """Run the color selection dialog and return the selected color.  
572    
573          If the user cancels, return None.      def has_selected_shapes(self):
574          """          """Return true if a shape is currently selected"""
575          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  
   
     def LayerFillColor(self):  
         layer = self.current_layer()  
         if layer is not None:  
             color = self.choose_color()  
             if color is not None:  
                 layer.SetFill(color)  
576    
577      def LayerTransparentFill(self):      def HideLayer(self):
578          layer = self.current_layer()          layer = self.current_layer()
579          if layer is not None:          if layer is not None:
580              layer.SetFill(None)              layer.SetVisible(0)
581    
582      def LayerOutlineColor(self):      def ShowLayer(self):
583          layer = self.current_layer()          layer = self.current_layer()
584          if layer is not None:          if layer is not None:
585              color = self.choose_color()              layer.SetVisible(1)
             if color is not None:  
                 layer.SetStroke(color)  
586    
587      def LayerNoOutline(self):      def DuplicateLayer(self):
588            """Ceate a new layer above the selected layer with the same shapestore
589            """
590          layer = self.current_layer()          layer = self.current_layer()
591          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
592              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
593                                  layer.ShapeStore(),
594                                  projection = layer.GetProjection())
595                new_classification = copy.deepcopy(layer.GetClassification())
596                new_layer.SetClassification(new_classification)
597                self.Map().AddLayer(new_layer)
598    
599      def HideLayer(self):      def CanDuplicateLayer(self):
600          layer = self.current_layer()          """Return whether the DuplicateLayer method can create a duplicate"""
         if layer is not None:  
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
601          layer = self.current_layer()          layer = self.current_layer()
602          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(1)  
603    
604      def LayerShowTable(self):      def LayerShowTable(self):
605          layer = self.current_layer()          layer = self.current_layer()
606          if layer is not None:          if layer is not None:
607              table = layer.table              table = layer.ShapeStore().Table()
608              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
609              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
610              if dialog is None:              if dialog is None:
611                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
612                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
613                                                layer, table)                                           layer, table)
614                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
615                  dialog.Show(true)                  dialog.Show(True)
616              else:              else:
617                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
618                  pass                  pass
619    
620      def Projection(self):      def MapProjection(self):
621          map = self.canvas.Map()  
622          proj = map.projection          name = "map_projection"
623          if proj is None:          dialog = self.get_open_dialog(name)
624              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)  
625          else:          if dialog is None:
626              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              map = self.canvas.Map()
627          if proj4Dlg.ShowModal() == wxID_OK:              dialog = projdialog.ProjFrame(self, name,
628              params = proj4Dlg.GetParams()                       _("Map Projection: %s") % map.Title(), map)
629              if params is not None:              self.add_dialog(name, dialog)
630                  proj = Projection(params)              dialog.Show()
631            dialog.Raise()
632    
633        def LayerProjection(self):
634    
635            layer = self.current_layer()
636    
637            name = "layer_projection" + str(id(layer))
638            dialog = self.get_open_dialog(name)
639    
640            if dialog is None:
641                map = self.canvas.Map()
642                dialog = projdialog.ProjFrame(self, name,
643                         _("Layer Projection: %s") % layer.Title(), layer)
644                self.add_dialog(name, dialog)
645                dialog.Show()
646            dialog.Raise()
647    
648        def LayerEditProperties(self):
649    
650            #
651            # the menu option for this should only be available if there
652            # is a current layer, so we don't need to check if the
653            # current layer is None
654            #
655    
656            layer = self.current_layer()
657            self.OpenLayerProperties(layer)
658    
659        def OpenLayerProperties(self, layer, group = None):
660            name = "layer_properties" + str(id(layer))
661            dialog = self.get_open_dialog(name)
662    
663            if dialog is None:
664                dialog = Classifier(self, name, self.Map(), layer, group)
665                self.add_dialog(name, dialog)
666                dialog.Show()
667            dialog.Raise()
668    
669        def LayerJoinTable(self):
670            layer = self.canvas.SelectedLayer()
671            if layer is not None:
672                dlg = JoinDialog(self, _("Join Layer with Table"),
673                                 self.application.session,
674                                 layer = layer)
675                dlg.ShowModal()
676    
677        def LayerUnjoinTable(self):
678            layer = self.canvas.SelectedLayer()
679            if layer is not None:
680                orig_store = layer.ShapeStore().OrigShapeStore()
681                if orig_store:
682                    layer.SetShapeStore(orig_store)
683    
684        def ShowLegend(self):
685            if not self.LegendShown():
686                self.ToggleLegend()
687    
688        def ToggleLegend(self):
689            """Show the legend if it's not shown otherwise hide it again"""
690            name = "legend"
691            dialog = self.FindRegisteredDock(name)
692    
693            if dialog is None:
694                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
695                legend.LegendPanel(dialog, None, self)
696                dialog.Dock()
697                dialog.GetPanel().SetMap(self.Map())
698                dialog.Show()
699            else:
700                dialog.Show(not dialog.IsShown())
701    
702        def LegendShown(self):
703            """Return true iff the legend is currently open"""
704            dialog = self.FindRegisteredDock("legend")
705            return dialog is not None and dialog.IsShown()
706    
707        def TableOpen(self):
708            dlg = wxFileDialog(self, _("Open Table"), ".", "",
709                               _("DBF Files (*.dbf)") + "|*.dbf|" +
710                               #_("CSV Files (*.csv)") + "|*.csv|" +
711                               _("All Files (*.*)") + "|*.*",
712                               wxOPEN)
713            if dlg.ShowModal() == wxID_OK:
714                filename = dlg.GetPath()
715                dlg.Destroy()
716                try:
717                    table = self.application.session.OpenTableFile(filename)
718                except IOError:
719                    # the layer couldn't be opened
720                    self.RunMessageBox(_("Open Table"),
721                                       _("Can't open the file '%s'.") % filename)
722              else:              else:
723                  proj = None                  self.ShowTableView(table)
724              map.SetProjection(proj)  
725          proj4Dlg.Destroy()      def TableClose(self):
726            tables = self.application.session.UnreferencedTables()
727    
728            lst = [(t.Title(), t) for t in tables]
729            lst.sort()
730            titles = [i[0] for i in lst]
731            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
732                                         _("Close Table"), titles,
733                                         size = (400, 300),
734                                         style = wxDEFAULT_DIALOG_STYLE |
735                                                 wxRESIZE_BORDER)
736            if dlg.ShowModal() == wxID_OK:
737                for i in dlg.GetValue():
738                    self.application.session.RemoveTable(lst[i][1])
739    
740    
741        def TableShow(self):
742            """Offer a multi-selection dialog for tables to be displayed
743    
744            The windows for the selected tables are opened or brought to
745            the front.
746            """
747            tables = self.application.session.Tables()
748    
749            lst = [(t.Title(), t) for t in tables]
750            lst.sort()
751            titles = [i[0] for i in lst]
752            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
753                                         _("Show Table"), titles,
754                                         size = (400,300),
755                                         style = wxDEFAULT_DIALOG_STYLE |
756                                                 wxRESIZE_BORDER)
757            if (dlg.ShowModal() == wxID_OK):
758                for i in dlg.GetValue():
759                    # XXX: if the table belongs to a layer, open a
760                    # LayerTableFrame instead of QueryTableFrame
761                    self.ShowTableView(lst[i][1])
762    
763        def TableJoin(self):
764            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
765            dlg.ShowModal()
766    
767        def ShowTableView(self, table):
768            """Open a table view for the table and optionally"""
769            name = "table_view%d" % id(table)
770            dialog = self.get_open_dialog(name)
771            if dialog is None:
772                dialog = tableview.QueryTableFrame(self, name,
773                                                   _("Table: %s") % table.Title(),
774                                                   table)
775                self.add_dialog(name, dialog)
776                dialog.Show(True)
777            dialog.Raise()
778    
779        def TableRename(self):
780            """Let the user rename a table"""
781    
782            # First, let the user select a table
783            tables = self.application.session.Tables()
784            lst = [(t.Title(), t) for t in tables]
785            lst.sort()
786            titles = [i[0] for i in lst]
787            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
788                                         _("Rename Table"), titles,
789                                         size = (400,300),
790                                         style = wxDEFAULT_DIALOG_STYLE |
791                                                 wxRESIZE_BORDER)
792            if (dlg.ShowModal() == wxID_OK):
793                to_rename = [lst[i][1] for i in dlg.GetValue()]
794                dlg.Destroy()
795            else:
796                to_rename = []
797    
798            # Second, let the user rename the layers
799            for table in to_rename:
800                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
801                                        table.Title())
802                try:
803                    if dlg.ShowModal() == wxID_OK:
804                        title = dlg.GetValue()
805                        if title != "":
806                            table.SetTitle(title)
807    
808                            # Make sure the session is marked as modified.
809                            # FIXME: This should be handled automatically,
810                            # but that requires more changes to the tables
811                            # than I have time for currently.
812                            self.application.session.changed()
813                finally:
814                    dlg.Destroy()
815    
816    
817      def ZoomInTool(self):      def ZoomInTool(self):
818          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 450  class MainWindow(wxFrame): Line 833  class MainWindow(wxFrame):
833      def FullExtent(self):      def FullExtent(self):
834          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
835    
836        def FullLayerExtent(self):
837            self.canvas.FitLayerToWindow(self.current_layer())
838    
839        def FullSelectionExtent(self):
840            self.canvas.FitSelectedToWindow()
841    
842        def ExportMap(self):
843            self.canvas.Export()
844    
845      def PrintMap(self):      def PrintMap(self):
846          self.canvas.Print()          self.canvas.Print()
847    
848      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
849            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
850                                    self.Map().Title())
851            if dlg.ShowModal() == wxID_OK:
852                title = dlg.GetValue()
853                if title != "":
854                    self.Map().SetTitle(title)
855                    self.__SetTitle(title)
856    
857            dlg.Destroy()
858    
859        def RenameLayer(self):
860            """Let the user rename the currently selected layer"""
861            layer = self.current_layer()
862            if layer is not None:
863                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
864                                        layer.Title())
865                try:
866                    if dlg.ShowModal() == wxID_OK:
867                        title = dlg.GetValue()
868                        if title != "":
869                            layer.SetTitle(title)
870                finally:
871                    dlg.Destroy()
872    
873        def identify_view_on_demand(self, layer, shapes):
874            """Subscribed to the canvas' SHAPES_SELECTED message
875    
876            If the current tool is the identify tool, at least one shape is
877            selected and the identify dialog is not shown, show the dialog.
878            """
879            # If the selection has become empty we don't need to do
880            # anything. Otherwise it could happen that the dialog was popped
881            # up when the selection became empty, e.g. when a new selection
882            # is opened while the identify tool is active and dialog had
883            # been closed
884            if not shapes:
885                return
886    
887          name = "identify_view"          name = "identify_view"
888          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
889              if not self.dialog_open(name):              if not self.dialog_open(name):
890                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
891                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
892                  dialog.Show(true)                  dialog.Show(True)
893              else:              else:
894                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
895                  pass                  pass
896    
897        def __SetTitle(self, title):
898            self.SetTitle("Thuban - " + title)
899    
900  #  #
901  # Define all the commands available in the main window  # Define all the commands available in the main window
902  #  #
# Line 471  class MainWindow(wxFrame): Line 904  class MainWindow(wxFrame):
904    
905  # Helper functions to define common command implementations  # Helper functions to define common command implementations
906  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
907      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
908      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
909    
910  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
911      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
912        """Add a command implemented by a method of the mainwindow object"""
913      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
914                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
915                             sensitive = sensitive, checked = checked))
916    
917    def make_check_current_tool(toolname):
918        """Return a function that tests if the currently active tool is toolname
919    
920        The returned function can be called with the context and returns
921        true iff the currently active tool's name is toolname. It's directly
922        usable as the 'checked' callback of a command.
923        """
924        def check_current_tool(context, name=toolname):
925            return context.mainwindow.canvas.CurrentTool() == name
926        return check_current_tool
927    
928  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
929                    icon = ""):                    icon = "", sensitive = None):
930      """Add a tool command"""      """Add a tool command"""
931      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
932          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
933      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
934                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
935    
936  def _has_selected_layer(context):  def _has_selected_layer(context):
937      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
938      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
939    
940    def _has_selected_shapes(context):
941        """Return true if a layer is selected in the context"""
942        return context.mainwindow.has_selected_shapes()
943    
944    def _can_remove_layer(context):
945        return context.mainwindow.CanRemoveLayer()
946    
947    def _has_tree_window_shown(context):
948        """Return true if the tree window is shown"""
949        return context.mainwindow.SessionTreeShown()
950    
951    def _has_visible_map(context):
952        """Return true iff theres a visible map in the mainwindow.
953    
954        A visible map is a map with at least one visible layer."""
955        map = context.mainwindow.Map()
956        if map is not None:
957            for layer in map.Layers():
958                if layer.Visible():
959                    return 1
960        return 0
961    
962    def _has_legend_shown(context):
963        """Return true if the legend window is shown"""
964        return context.mainwindow.LegendShown()
965    
966    def _has_gdal_support(context):
967        """Return True if the GDAL is available"""
968        return Thuban.Model.resource.has_gdal_support()
969    
970    def _has_dbconnections(context):
971        """Return whether the the session has database connections"""
972        return context.session.HasDBConnections()
973    
974    def _has_postgis_support(context):
975        return has_postgis_support()
976    
977    
978  # File menu  # File menu
979  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
980  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
981  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
982  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
983  _method_command("exit", "&Exit", "Exit")  _method_command("save_session", _("&Save Session"), "SaveSession",
984                    helptext =_("Save this session to the file it was opened from"))
985    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
986                    helptext = _("Save this session to a new file"))
987    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
988                    checked = _has_tree_window_shown,
989                    helptext = _("Toggle on/off the session tree analysis window"))
990    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
991                    checked = _has_legend_shown,
992                    helptext = _("Toggle Legend on/off"))
993    _method_command("database_management", _("&Database Connections..."),
994                    "DatabaseManagement",
995                    sensitive = _has_postgis_support)
996    _method_command("exit", _("E&xit"), "Exit",
997                    helptext = _("Finish working with Thuban"))
998    
999  # Help menu  # Help menu
1000  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1001                    helptext = _("Info about Thuban authors, version and modules"))
1002    
1003    
1004  # Map menu  # Map menu
1005  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1006                    helptext = _("Set or change the map projection"))
1007    
1008  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1009                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1010  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1011                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1012  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1013                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1014  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1015                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1016  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1017                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1018  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
1019  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1020                  sensitive = _has_visible_map)
1021    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1022                  helptext = _("Add/Remove labels"), icon = "label",
1023                  sensitive = _has_visible_map)
1024    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1025                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1026                  sensitive = _has_visible_map)
1027    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1028                    helptext = _("Zoom to the full layer extent"),
1029                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1030    _method_command("selected_full_extent", _("&Full selection extent"),
1031                    "FullSelectionExtent",
1032                    helptext = _("Zoom to the full selection extent"),
1033                    icon = "fullselextent", sensitive = _has_selected_shapes)
1034    _method_command("map_export", _("E&xport"), "ExportMap",
1035                    helptext = _("Export the map to file"))
1036    _method_command("map_print", _("Prin&t"), "PrintMap",
1037                    helptext = _("Print the map"))
1038    _method_command("map_rename", _("&Rename..."), "RenameMap",
1039                    helptext = _("Rename the map"))
1040    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1041                    helptext = _("Add a new layer to the map"))
1042    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1043                    helptext = _("Add a new image layer to the map"),
1044                    sensitive = _has_gdal_support)
1045    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1046                    helptext = _("Add a new database layer to active map"),
1047                    sensitive = _has_dbconnections)
1048    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1049                    helptext = _("Remove selected layer"),
1050                    sensitive = _can_remove_layer)
1051    
1052  # Layer menu  # Layer menu
1053  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1054                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1055  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1056                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1057                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1058  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1059                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1060                  sensitive = _has_selected_layer)                  helptext = _("Rename selected layer"),
 _method_command("layer_transparent_fill", "&Transparent Fill",  
                 "LayerTransparentFill",  
                 helptext = "Do not fill the selected layer(s)",  
1061                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1062  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1063                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Raise selected layer"),
1064                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1065  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1066                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Lower selected layer"),
1067                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1068  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1069                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer visible"),
1070                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1071  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1072                  helptext = "Lower selected layer(s)",                  helptext = _("Make selected layer unvisible"),
1073                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1074  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1075                  helptext = "Make selected layer(s) visible",                  helptext = _("Show the selected layer's table"),
                 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",  
1076                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1077    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1078                    sensitive = _has_selected_layer,
1079                    helptext = _("Edit the properties of the selected layer"))
1080    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1081                    sensitive = _has_selected_layer,
1082                    helptext = _("Join and attach a table to the selected layer"))
1083    
1084    def _can_unjoin(context):
1085        """Return whether the Layer/Unjoin command can be executed.
1086    
1087        This is the case if a layer is selected and that layer has a
1088        shapestore that has an original shapestore.
1089        """
1090        layer = context.mainwindow.SelectedLayer()
1091        if layer is None:
1092            return 0
1093        getstore = getattr(layer, "ShapeStore", None)
1094        if getstore is not None:
1095            return getstore().OrigShapeStore() is not None
1096        else:
1097            return 0
1098    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1099                    sensitive = _can_unjoin,
1100                    helptext = _("Undo the last join operation"))
1101    
1102    
1103    def _has_tables(context):
1104        return bool(context.session.Tables())
1105    
1106    # Table menu
1107    _method_command("table_open", _("&Open..."), "TableOpen",
1108                    helptext = _("Open a DBF-table from a file"))
1109    _method_command("table_close", _("&Close..."), "TableClose",
1110           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1111                    helptext = _("Close one or more tables from a list"))
1112    _method_command("table_rename", _("&Rename..."), "TableRename",
1113                    sensitive = _has_tables,
1114                    helptext = _("Rename one or more tables"))
1115    _method_command("table_show", _("&Show..."), "TableShow",
1116                    sensitive = _has_tables,
1117                    helptext = _("Show one or more tables in a dialog"))
1118    _method_command("table_join", _("&Join..."), "TableJoin",
1119                    sensitive = _has_tables,
1120                    helptext = _("Join two tables creating a new one"))
1121    
1122    #  Export only under Windows ...
1123    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1124                            None,
1125                            "map_rename",
1126                            "map_projection",
1127                            None,
1128                            "map_zoom_in_tool", "map_zoom_out_tool",
1129                            "map_pan_tool",
1130                            "map_full_extent",
1131                            "layer_full_extent",
1132                            "selected_full_extent",
1133                            None,
1134                            "map_identify_tool", "map_label_tool",
1135                            None,
1136                            "toggle_legend",
1137                            None]
1138    if wxPlatform == '__WXMSW__':
1139        map_menu.append("map_export")
1140    map_menu.append("map_print")
1141    
1142    # the menu structure
1143    main_menu = Menu("<main>", "<main>",
1144                     [Menu("file", _("&File"),
1145                           ["new_session", "open_session", None,
1146                            "save_session", "save_session_as", None,
1147                            "database_management", None,
1148                            "toggle_session_tree", None,
1149                            "exit"]),
1150                      Menu("map", _("&Map"), map_menu),
1151                      Menu("layer", _("&Layer"),
1152                           ["layer_rename", "layer_duplicate",
1153                            None,
1154                            "layer_raise", "layer_lower",
1155                            None,
1156                            "layer_show", "layer_hide",
1157                            None,
1158                            "layer_projection",
1159                            None,
1160                            "layer_show_table",
1161                            "layer_jointable",
1162                            "layer_unjointable",
1163                            None,
1164                            "layer_properties"]),
1165                      Menu("table", _("&Table"),
1166                           ["table_open", "table_close", "table_rename",
1167                           None,
1168                           "table_show",
1169                           None,
1170                           "table_join"]),
1171                      Menu("help", _("&Help"),
1172                           ["help_about"])])
1173    
1174    # the main toolbar
1175    
1176    main_toolbar = Menu("<toolbar>", "<toolbar>",
1177                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1178                         "map_full_extent",
1179                         "layer_full_extent",
1180                         "selected_full_extent",
1181                         None,
1182                         "map_identify_tool", "map_label_tool"])
1183    
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