/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 49 by bh, Mon Sep 10 16:03:59 2001 UTC revision 1625 by bh, Thu Aug 21 16:02:23 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
5    # Frank Koormann <[email protected]>
6  #  #
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 12  The main window Line 13  The main window
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    
16  import sys, os  __ThubanVersion__ = "0.8" #"$THUBAN_0_2$"
17    #__BuildDate__ = "$Date$"
18    
19    import os
20    import copy
21    
22  from wxPython.wx import *  from wxPython.wx import *
23    from wxPython.wx import __version__ as wxPython_version
24    
25  import Thuban  import Thuban
26  from Thuban.Model.session import Session  import Thuban.version
27  from Thuban.Model.map import Map  
28  from Thuban.Model.layer import Layer  from Thuban import _
29  from Thuban.Model.color import Color  from Thuban.Model.session import create_empty_session
30  from Thuban.Model.proj import Projection  from Thuban.Model.layer import Layer, RasterLayer
31    from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
32    # XXX: replace this by
33    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
34    # when Thuban does not support wxPython 2.4.0 any more.
35    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
36    
37  import view  import view
38  import tree  import tree
 import proj4dialog  
39  import tableview, identifyview  import tableview, identifyview
40    from Thuban.UI.classifier import Classifier
41    import legend
42    from menu import Menu
43    
44    from context import Context
45    from command import registry, Command, ToolCommand
46    from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
47         MAP_REPLACED
48    from about import About
49    
50    from Thuban.UI.dock import DockFrame
51    from Thuban.UI.join import JoinDialog
52    from Thuban.UI.dbdialog import DBFrame, ChooseDBTableDialog
53    import resource
54    import Thuban.Model.resource
55    
56    import projdialog
57    
58    
59    class MainWindow(DockFrame):
60    
61        # Some messages that can be subscribed/unsubscribed directly through
62        # the MapCanvas come in fact from other objects. This is a map to
63        # map those messages to the names of the instance variables they
64        # actually come from. This delegation is implemented in the
65        # Subscribe and unsubscribed methods
66        delegated_messages = {LAYER_SELECTED: "canvas",
67                              SHAPES_SELECTED: "canvas",
68                              MAP_REPLACED: "canvas"}
69    
70        # Methods delegated to some instance variables. The delegation is
71        # implemented in the __getattr__ method.
72        delegated_methods = {"SelectLayer": "canvas",
73                             "SelectShapes": "canvas",
74                             "SelectedLayer": "canvas",
75                             "SelectedShapes": "canvas",
76                             }
77    
78        def __init__(self, parent, ID, title, application, interactor,
79                     initial_message = None, size = wxSize(-1, -1)):
80            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
81            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
82    
83  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  
84    
85          self.CreateStatusBar()          self.CreateStatusBar()
86          self.SetStatusText("This is the wxPython-based "          if initial_message:
87                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
88    
89          self.identify_view = None          self.identify_view = None
90    
91          self.init_ids()          self.init_ids()
92    
93          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
94            self.SetMenuBar(self.build_menu_bar(main_menu))
         menu = wxMenu()  
         menuBar.Append(menu, "&File");  
         for name in ["new_session", "open_session", None,  
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["map_projection",  
                      None,  
                      "map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool",  
                      None,  
                      "map_full_extent",  
                      None,  
                      "map_print"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Layer");  
         for name in ["layer_add", "layer_remove",  
                      None,  
                      "layer_fill_color", "layer_transparent_fill",  
                      "layer_ourline_color", "layer_no_outline",  
                      None,  
                      "layer_raise", "layer_lower",  
                      None,  
                      "layer_show", "layer_hide",  
                      None,  
                      "layer_show_table"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Help");  
         self.add_menu_command(menu, "help_about")  
   
         self.SetMenuBar(menuBar)  
95    
96          # toolbar          # Similarly, create the toolbar from main_toolbar
97          toolbar = self.CreateToolBar(wxTB_3DBUTTONS)          toolbar = self.build_toolbar(main_toolbar)
         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)  
98          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
99          toolbar.Realize()          toolbar.Realize()
100    
101    
102          # Create the map canvas          # Create the map canvas
103          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
104            canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
105            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
106          self.canvas = canvas          self.canvas = canvas
107    
108            self.SetMainWindow(self.canvas)
109    
110            self.SetAutoLayout(True)
111    
112          self.init_dialogs()          self.init_dialogs()
113    
114          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
115    
116          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
117    
118        def Subscribe(self, channel, *args):
119            """Subscribe a function to a message channel.
120    
121            If channel is one of the delegated messages call the appropriate
122            object's Subscribe method. Otherwise do nothing.
123            """
124            if channel in self.delegated_messages:
125                object = getattr(self, self.delegated_messages[channel])
126                object.Subscribe(channel, *args)
127            else:
128                print "Trying to subscribe to unsupported channel %s" % channel
129    
130        def Unsubscribe(self, channel, *args):
131            """Unsubscribe a function from a message channel.
132    
133            If channel is one of the delegated messages call the appropriate
134            object's Unsubscribe method. Otherwise do nothing.
135            """
136            if channel in self.delegated_messages:
137                object = getattr(self, self.delegated_messages[channel])
138                object.Unsubscribe(channel, *args)
139    
140        def __getattr__(self, attr):
141            """If attr is one of the delegated methods return that method
142    
143            Otherwise raise AttributeError.
144            """
145            if attr in self.delegated_methods:
146                return getattr(getattr(self, self.delegated_methods[attr]), attr)
147            raise AttributeError(attr)
148    
149      def init_ids(self):      def init_ids(self):
150          """Initialize the ids"""          """Initialize the ids"""
151          self.current_id = 6000          self.current_id = 6000
152          self.id_to_name = {}          self.id_to_name = {}
153          self.name_to_id = {}          self.name_to_id = {}
154            self.events_bound = {}
155    
156      def get_id(self, name):      def get_id(self, name):
157          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 130  class MainWindow(wxFrame): Line 164  class MainWindow(wxFrame):
164              self.name_to_id[name] = ID              self.name_to_id[name] = ID
165              self.id_to_name[ID] = name              self.id_to_name[ID] = name
166          return ID          return ID
167            
168        def bind_command_events(self, command, ID):
169            """Bind the necessary events for the given command and ID"""
170            if not self.events_bound.has_key(ID):
171                # the events haven't been bound yet
172                EVT_MENU(self, ID, self.invoke_command)
173                if command.IsDynamic():
174                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
175    
176        def build_menu_bar(self, menudesc):
177            """Build and return the menu bar from the menu description"""
178            menu_bar = wxMenuBar()
179    
180            for item in menudesc.items:
181                # here the items must all be Menu instances themselves
182                menu_bar.Append(self.build_menu(item), item.title)
183    
184            return menu_bar
185    
186        def build_menu(self, menudesc):
187            """Return a wxMenu built from the menu description menudesc"""
188            wxmenu = wxMenu()
189            last = None
190            for item in menudesc.items:
191                if item is None:
192                    # a separator. Only add one if the last item was not a
193                    # separator
194                    if last is not None:
195                        wxmenu.AppendSeparator()
196                elif isinstance(item, Menu):
197                    # a submenu
198                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
199                else:
200                    # must the name the name of a command
201                    self.add_menu_command(wxmenu, item)
202                last = item
203            return wxmenu
204    
205        def build_toolbar(self, toolbardesc):
206            """Build and return the main toolbar window from a toolbar description
207    
208            The parameter should be an instance of the Menu class but it
209            should not contain submenus.
210            """
211            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
212    
213            # set the size of the tools' bitmaps. Not needed on wxGTK, but
214            # on Windows, although it doesn't work very well there. It seems
215            # that only 16x16 icons are really supported on windows.
216            # We probably shouldn't hardwire the bitmap size here.
217            toolbar.SetToolBitmapSize(wxSize(24, 24))
218    
219            for item in toolbardesc.items:
220                if item is None:
221                    toolbar.AddSeparator()
222                else:
223                    # assume it's a string.
224                    self.add_toolbar_command(toolbar, item)
225    
226            return toolbar
227    
228      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
229          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
230    
# Line 144  class MainWindow(wxFrame): Line 238  class MainWindow(wxFrame):
238                  ID = self.get_id(name)                  ID = self.get_id(name)
239                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
240                              command.IsCheckCommand())                              command.IsCheckCommand())
241                  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)  
242              else:              else:
243                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
244    
245      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
246          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 163  class MainWindow(wxFrame): Line 255  class MainWindow(wxFrame):
255              command = registry.Command(name)              command = registry.Command(name)
256              if command is not None:              if command is not None:
257                  ID = self.get_id(name)                  ID = self.get_id(name)
258                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
259                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
260                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
261                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
262                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
263                    self.bind_command_events(command, ID)
264              else:              else:
265                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
266    
267        def Context(self):
268            """Return the context object for a command invoked from this window
269            """
270            return Context(self.application, self.application.Session(), self)
271    
272      def invoke_command(self, event):      def invoke_command(self, event):
273          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
274          if name is not None:          if name is not None:
275              command = registry.Command(name)              command = registry.Command(name)
276              command.Execute(self)              command.Execute(self.Context())
277          else:          else:
278              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
279    
280      def update_command_ui(self, event):      def update_command_ui(self, event):
281          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
282            context = self.Context()
283          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
284          if command is not None:          if command is not None:
285              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
286              event.SetText(command.DynText(self))              event.Enable(sensitive)
287                if command.IsTool() and not sensitive and command.Checked(context):
288                    # When a checked tool command is disabled deselect all
289                    # tools. Otherwise the tool would remain active but it
290                    # might lead to errors if the tools stays active. This
291                    # problem occurred in GREAT-ER and this fixes it, but
292                    # it's not clear to me whether this is really the best
293                    # way to do it (BH, 20021206).
294                    self.canvas.SelectTool(None)
295                event.SetText(command.DynText(context))
296              if command.IsCheckCommand():              if command.IsCheckCommand():
297                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
298    
299      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
300          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
301          and return the result"""          and return the result"""
302          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
303            dlg.CenterOnParent()
304          result = dlg.ShowModal()          result = dlg.ShowModal()
305          dlg.Destroy()          dlg.Destroy()
306          return result          return result
# Line 205  class MainWindow(wxFrame): Line 314  class MainWindow(wxFrame):
314    
315      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
316          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
317              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
318          self.dialogs[name] = dialog          self.dialogs[name] = dialog
319    
320      def dialog_open(self, name):      def dialog_open(self, name):
# Line 217  class MainWindow(wxFrame): Line 326  class MainWindow(wxFrame):
326      def get_open_dialog(self, name):      def get_open_dialog(self, name):
327          return self.dialogs.get(name)          return self.dialogs.get(name)
328    
329        def view_position_changed(self):
330            pos = self.canvas.CurrentPosition()
331            if pos is not None:
332                text = "(%10.10g, %10.10g)" % pos
333            else:
334                text = ""
335            self.set_position_text(text)
336    
337        def set_position_text(self, text):
338            """Set the statusbar text showing the current position.
339    
340            By default the text is shown in field 0 of the status bar.
341            Override this method in derived classes to put it into a
342            different field of the statusbar.
343            """
344            self.SetStatusText(text)
345    
346        def save_modified_session(self, can_veto = 1):
347            """If the current session has been modified, ask the user
348            whether to save it and do so if requested. Return the outcome of
349            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
350            dialog wasn't run return wxID_NO.
351    
352            If the can_veto parameter is true (default) the dialog includes
353            a cancel button, otherwise not.
354            """
355            if self.application.session.WasModified():
356                flags = wxYES_NO | wxICON_QUESTION
357                if can_veto:
358                    flags = flags | wxCANCEL
359                result = self.RunMessageBox(_("Exit"),
360                                            _("The session has been modified."
361                                             " Do you want to save it?"),
362                                            flags)
363                if result == wxID_YES:
364                    self.SaveSession()
365            else:
366                result = wxID_NO
367            return result
368    
369      def NewSession(self):      def NewSession(self):
370          session = Session("")          if self.save_modified_session() != wxID_CANCEL:
371          session.AddMap(Map(""))              self.application.SetSession(create_empty_session())
         main.app.SetSession(session)  
372    
373      def OpenSession(self):      def OpenSession(self):
374          dlg = wxFileDialog(self, "Select a session file", ".", "",          if self.save_modified_session() != wxID_CANCEL:
375                             "*.session", wxOPEN)              dlg = wxFileDialog(self, _("Open Session"), ".", "",
376          if dlg.ShowModal() == wxID_OK:                                 "Thuban Session File (*.thuban)|*.thuban",
377              main.app.OpenSession(dlg.GetPath())                                 wxOPEN)
378          dlg.Destroy()              if dlg.ShowModal() == wxID_OK:
379                    self.application.OpenSession(dlg.GetPath())
380                dlg.Destroy()
381    
382      def SaveSession(self):      def SaveSession(self):
383          main.app.SaveSession()          if self.application.session.filename == None:
384                self.SaveSessionAs()
385            else:
386                self.application.SaveSession()
387    
388      def SaveSessionAs(self):      def SaveSessionAs(self):
389          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
390                             "*.session", wxOPEN)                             "Thuban Session File (*.thuban)|*.thuban",
391                               wxSAVE|wxOVERWRITE_PROMPT)
392          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
393              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
394              main.app.SaveSession()              self.application.SaveSession()
395          dlg.Destroy()          dlg.Destroy()
396    
397      def Exit(self):      def Exit(self):
398          self.Close(false)          self.Close(False)
399    
400      def OnClose(self, event):      def OnClose(self, event):
401          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
402          if main.app.session.WasModified():          if result == wxID_CANCEL:
             flags = wxYES_NO | wxICON_QUESTION  
             if event.CanVeto():  
                 flags = flags | wxCANCEL  
             result = self.RunMessageBox("Exit",  
                                         ("The session has been modified."  
                                          " Do you want to save it?"),  
                                         flags)  
             if result == wxID_YES:  
                 self.SaveSession()  
             elif result == wxID_CANCEL:  
                 veto = 1  
   
         if veto:  
403              event.Veto()              event.Veto()
404          else:          else:
405                # FIXME: it would be better to tie the unsubscription to
406                # wx's destroy event, but that isn't implemented for wxGTK
407                # yet.
408                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
409                DockFrame.OnClose(self, event)
410                for dlg in self.dialogs.values():
411                    dlg.Destroy()
412                self.canvas.Destroy()
413              self.Destroy()              self.Destroy()
414    
415      def SetMap(self, map):      def SetMap(self, map):
416          self.canvas.SetMap(map)          self.canvas.SetMap(map)
417            self.__SetTitle(map.Title())
418    
419            dialog = self.FindRegisteredDock("legend")
420            if dialog is not None:
421                dialog.GetPanel().SetMap(self.Map())
422    
423        def Map(self):
424            """Return the map displayed by this mainwindow"""
425    
426      def ShowSessionTree(self):          return self.canvas.Map()
427    
428        def ToggleSessionTree(self):
429            """If the session tree is shown close it otherwise create a new tree"""
430          name = "session_tree"          name = "session_tree"
431          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
432          if dialog is None:          if dialog is None:
433              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
434              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
435              dialog.Show(true)              dialog.Show(True)
436          else:          else:
437              # FIXME: bring dialog to front here              dialog.Close()
438              pass  
439        def SessionTreeShown(self):
440            """Return true iff the session tree is currently shown"""
441            return self.get_open_dialog("session_tree") is not None
442    
443      def About(self):      def About(self):
444          self.RunMessageBox("About",          dlg = About(self)
445                             ("Thuban is a program for\n"          dlg.ShowModal()
446                              "exploring geographic data.\n"          dlg.Destroy()
447                              "Copyright (C) 2001 Intevation GmbH.\n"  
448                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
449                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
450            dialog = self.get_open_dialog(name)
451            if dialog is None:
452                map = self.canvas.Map()
453                dialog = DBFrame(self, name, self.application.Session())
454                self.add_dialog(name, dialog)
455                dialog.Show()
456            dialog.Raise()
457    
458      def AddLayer(self):      def AddLayer(self):
459          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"), ".", "",
460                               _("Shapefiles (*.shp)") + "|*.shp|" +
461                               _("All Files (*.*)") + "|*.*",
462                               wxOPEN | wxMULTIPLE)
463            if dlg.ShowModal() == wxID_OK:
464                filenames = dlg.GetPaths()
465                for filename in filenames:
466                    title = os.path.splitext(os.path.basename(filename))[0]
467                    map = self.canvas.Map()
468                    has_layers = map.HasLayers()
469                    try:
470                        store = self.application.Session().OpenShapefile(filename)
471                    except IOError:
472                        # the layer couldn't be opened
473                        self.RunMessageBox(_("Add Layer"),
474                                           _("Can't open the file '%s'.")%filename)
475                    else:
476                        layer = Layer(title, store)
477                        map.AddLayer(layer)
478                        if not has_layers:
479                            # if we're adding a layer to an empty map, fit the
480                            # new map to the window
481                            self.canvas.FitMapToWindow()
482            dlg.Destroy()
483    
484        def AddRasterLayer(self):
485            dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",
486                             wxOPEN)                             wxOPEN)
487          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
488              filename = dlg.GetPath()              filename = dlg.GetPath()
489              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
490              map = self.canvas.Map()              map = self.canvas.Map()
491              has_layers = map.HasLayers()              has_layers = map.HasLayers()
492              try:              try:
493                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
494              except IOError:              except IOError:
495                  # the layer couldn't be opened                  # the layer couldn't be opened
496                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
497                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
498              else:              else:
499                    map.AddLayer(layer)
500                  if not has_layers:                  if not has_layers:
501                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
502                      # new map to the window                      # new map to the window
503                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
504          dlg.Destroy()          dlg.Destroy()
505    
506        def AddDBLayer(self):
507            """Add a layer read from a database"""
508            session = self.application.Session()
509            dlg = ChooseDBTableDialog(self.application.Session(), self,-1, "")
510    
511            if dlg.ShowModal() == wxID_OK:
512                dbconn, dbtable = dlg.GetTable()
513                try:
514                    title = str(dbtable)
515    
516                    # Chose the correct Interface for the database type
517                    store = PostGISShapeStore(dbconn, dbtable)
518                    session.AddShapeStore(store)
519                    layer = Layer(title, store)
520                except:
521                    # Some error occured while initializing the layer
522                    self.RunMessageBox(_("Add Layer from database"),
523                                       _("Can't open the database table '%s'")
524                                       % dbtable)
525    
526                map = self.canvas.Map()
527    
528                has_layers = map.HasLayers()
529                map.AddLayer(layer)
530                if not has_layers:
531                    self.canvas.FitMapToWindow()
532    
533            dlg.Destroy()
534    
535      def RemoveLayer(self):      def RemoveLayer(self):
536          layer = self.current_layer()          layer = self.current_layer()
537          if layer is not None:          if layer is not None:
538              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
539    
540        def CanRemoveLayer(self):
541            """Return true if the currently selected layer can be deleted.
542    
543            If no layer is selected return False.
544    
545            The return value of this method determines whether the remove
546            layer command is sensitive in menu.
547            """
548            layer = self.current_layer()
549            if layer is not None:
550                return self.canvas.Map().CanRemoveLayer(layer)
551            return False
552    
553      def RaiseLayer(self):      def RaiseLayer(self):
554          layer = self.current_layer()          layer = self.current_layer()
555          if layer is not None:          if layer is not None:
556              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
557            
558      def LowerLayer(self):      def LowerLayer(self):
559          layer = self.current_layer()          layer = self.current_layer()
560          if layer is not None:          if layer is not None:
# Line 327  class MainWindow(wxFrame): Line 565  class MainWindow(wxFrame):
565    
566          If no layer is selected, return None          If no layer is selected, return None
567          """          """
568          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
569    
570      def has_selected_layer(self):      def has_selected_layer(self):
571          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
572          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
   
     def choose_color(self):  
         """Run the color selection dialog and return the selected color.  
573    
574          If the user cancels, return None.      def has_selected_shapes(self):
575          """          """Return true if a shape is currently selected"""
576          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)  
577    
578      def LayerTransparentFill(self):      def HideLayer(self):
579          layer = self.current_layer()          layer = self.current_layer()
580          if layer is not None:          if layer is not None:
581              layer.SetFill(None)              layer.SetVisible(0)
582    
583      def LayerOutlineColor(self):      def ShowLayer(self):
584          layer = self.current_layer()          layer = self.current_layer()
585          if layer is not None:          if layer is not None:
586              color = self.choose_color()              layer.SetVisible(1)
             if color is not None:  
                 layer.SetStroke(color)  
587    
588      def LayerNoOutline(self):      def DuplicateLayer(self):
589            """Ceate a new layer above the selected layer with the same shapestore
590            """
591          layer = self.current_layer()          layer = self.current_layer()
592          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
593              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
594                                  layer.ShapeStore(),
595                                  projection = layer.GetProjection())
596                new_classification = copy.deepcopy(layer.GetClassification())
597                new_layer.SetClassification(new_classification)
598                self.Map().AddLayer(new_layer)
599    
600      def HideLayer(self):      def CanDuplicateLayer(self):
601            """Return whether the DuplicateLayer method can create a duplicate"""
602          layer = self.current_layer()          layer = self.current_layer()
603          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetVisible(1)  
604    
605      def LayerShowTable(self):      def LayerShowTable(self):
606          layer = self.current_layer()          layer = self.current_layer()
607          if layer is not None:          if layer is not None:
608              table = layer.table              table = layer.ShapeStore().Table()
609              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
610              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
611              if dialog is None:              if dialog is None:
612                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
613                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
614                                                layer, table)                                           layer, table)
615                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
616                  dialog.Show(true)                  dialog.Show(True)
617              else:              else:
618                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
619                  pass                  pass
620    
621      def Projection(self):      def MapProjection(self):
622          map = self.canvas.Map()  
623          proj = map.projection          name = "map_projection"
624          if proj is None:          dialog = self.get_open_dialog(name)
625              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)  
626          else:          if dialog is None:
627              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              map = self.canvas.Map()
628          if proj4Dlg.ShowModal() == wxID_OK:              dialog = projdialog.ProjFrame(self, name,
629              params = proj4Dlg.GetParams()                       _("Map Projection: %s") % map.Title(), map)
630              if params is not None:              self.add_dialog(name, dialog)
631                  proj = Projection(params)              dialog.Show()
632            dialog.Raise()
633    
634        def LayerProjection(self):
635    
636            layer = self.current_layer()
637    
638            name = "layer_projection" + str(id(layer))
639            dialog = self.get_open_dialog(name)
640    
641            if dialog is None:
642                map = self.canvas.Map()
643                dialog = projdialog.ProjFrame(self, name,
644                         _("Layer Projection: %s") % layer.Title(), layer)
645                self.add_dialog(name, dialog)
646                dialog.Show()
647            dialog.Raise()
648    
649        def LayerEditProperties(self):
650    
651            #
652            # the menu option for this should only be available if there
653            # is a current layer, so we don't need to check if the
654            # current layer is None
655            #
656    
657            layer = self.current_layer()
658            self.OpenLayerProperties(layer)
659    
660        def OpenLayerProperties(self, layer, group = None):
661            name = "layer_properties" + str(id(layer))
662            dialog = self.get_open_dialog(name)
663    
664            if dialog is None:
665                dialog = Classifier(self, name, self.Map(), layer, group)
666                self.add_dialog(name, dialog)
667                dialog.Show()
668            dialog.Raise()
669    
670        def LayerJoinTable(self):
671            layer = self.canvas.SelectedLayer()
672            if layer is not None:
673                dlg = JoinDialog(self, _("Join Layer with Table"),
674                                 self.application.session,
675                                 layer = layer)
676                dlg.ShowModal()
677    
678        def LayerUnjoinTable(self):
679            layer = self.canvas.SelectedLayer()
680            if layer is not None:
681                orig_store = layer.ShapeStore().OrigShapeStore()
682                if orig_store:
683                    layer.SetShapeStore(orig_store)
684    
685        def ShowLegend(self):
686            if not self.LegendShown():
687                self.ToggleLegend()
688    
689        def ToggleLegend(self):
690            """Show the legend if it's not shown otherwise hide it again"""
691            name = "legend"
692            dialog = self.FindRegisteredDock(name)
693    
694            if dialog is None:
695                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
696                legend.LegendPanel(dialog, None, self)
697                dialog.Dock()
698                dialog.GetPanel().SetMap(self.Map())
699                dialog.Show()
700            else:
701                dialog.Show(not dialog.IsShown())
702    
703        def LegendShown(self):
704            """Return true iff the legend is currently open"""
705            dialog = self.FindRegisteredDock("legend")
706            return dialog is not None and dialog.IsShown()
707    
708        def TableOpen(self):
709            dlg = wxFileDialog(self, _("Open Table"), ".", "",
710                               _("DBF Files (*.dbf)") + "|*.dbf|" +
711                               #_("CSV Files (*.csv)") + "|*.csv|" +
712                               _("All Files (*.*)") + "|*.*",
713                               wxOPEN)
714            if dlg.ShowModal() == wxID_OK:
715                filename = dlg.GetPath()
716                dlg.Destroy()
717                try:
718                    table = self.application.session.OpenTableFile(filename)
719                except IOError:
720                    # the layer couldn't be opened
721                    self.RunMessageBox(_("Open Table"),
722                                       _("Can't open the file '%s'.") % filename)
723              else:              else:
724                  proj = None                  self.ShowTableView(table)
725              map.SetProjection(proj)  
726          proj4Dlg.Destroy()      def TableClose(self):
727            tables = self.application.session.UnreferencedTables()
728    
729            lst = [(t.Title(), t) for t in tables]
730            lst.sort()
731            titles = [i[0] for i in lst]
732            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
733                                         _("Close Table"), titles,
734                                         size = (400, 300),
735                                         style = wxDEFAULT_DIALOG_STYLE |
736                                                 wxRESIZE_BORDER)
737            if dlg.ShowModal() == wxID_OK:
738                for i in dlg.GetValue():
739                    self.application.session.RemoveTable(lst[i][1])
740    
741    
742        def TableShow(self):
743            """Offer a multi-selection dialog for tables to be displayed
744    
745            The windows for the selected tables are opened or brought to
746            the front.
747            """
748            tables = self.application.session.Tables()
749    
750            lst = [(t.Title(), t) for t in tables]
751            lst.sort()
752            titles = [i[0] for i in lst]
753            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
754                                         _("Show Table"), titles,
755                                         size = (400,300),
756                                         style = wxDEFAULT_DIALOG_STYLE |
757                                                 wxRESIZE_BORDER)
758            if (dlg.ShowModal() == wxID_OK):
759                for i in dlg.GetValue():
760                    # XXX: if the table belongs to a layer, open a
761                    # LayerTableFrame instead of QueryTableFrame
762                    self.ShowTableView(lst[i][1])
763    
764        def TableJoin(self):
765            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
766            dlg.ShowModal()
767    
768        def ShowTableView(self, table):
769            """Open a table view for the table and optionally"""
770            name = "table_view%d" % id(table)
771            dialog = self.get_open_dialog(name)
772            if dialog is None:
773                dialog = tableview.QueryTableFrame(self, name,
774                                                   _("Table: %s") % table.Title(),
775                                                   table)
776                self.add_dialog(name, dialog)
777                dialog.Show(True)
778            dialog.Raise()
779    
780        def TableRename(self):
781            """Let the user rename a table"""
782    
783            # First, let the user select a table
784            tables = self.application.session.Tables()
785            lst = [(t.Title(), t) for t in tables]
786            lst.sort()
787            titles = [i[0] for i in lst]
788            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
789                                         _("Rename Table"), titles,
790                                         size = (400,300),
791                                         style = wxDEFAULT_DIALOG_STYLE |
792                                                 wxRESIZE_BORDER)
793            if (dlg.ShowModal() == wxID_OK):
794                to_rename = [lst[i][1] for i in dlg.GetValue()]
795                dlg.Destroy()
796            else:
797                to_rename = []
798    
799            # Second, let the user rename the layers
800            for table in to_rename:
801                dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",
802                                        table.Title())
803                try:
804                    if dlg.ShowModal() == wxID_OK:
805                        title = dlg.GetValue()
806                        if title != "":
807                            table.SetTitle(title)
808    
809                            # Make sure the session is marked as modified.
810                            # FIXME: This should be handled automatically,
811                            # but that requires more changes to the tables
812                            # than I have time for currently.
813                            self.application.session.changed()
814                finally:
815                    dlg.Destroy()
816    
817    
818      def ZoomInTool(self):      def ZoomInTool(self):
819          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 434  class MainWindow(wxFrame): Line 834  class MainWindow(wxFrame):
834      def FullExtent(self):      def FullExtent(self):
835          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
836    
837        def FullLayerExtent(self):
838            self.canvas.FitLayerToWindow(self.current_layer())
839    
840        def FullSelectionExtent(self):
841            self.canvas.FitSelectedToWindow()
842    
843        def ExportMap(self):
844            self.canvas.Export()
845    
846      def PrintMap(self):      def PrintMap(self):
847          self.canvas.Print()          self.canvas.Print()
848    
849      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
850            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
851                                    self.Map().Title())
852            if dlg.ShowModal() == wxID_OK:
853                title = dlg.GetValue()
854                if title != "":
855                    self.Map().SetTitle(title)
856                    self.__SetTitle(title)
857    
858            dlg.Destroy()
859    
860        def RenameLayer(self):
861            """Let the user rename the currently selected layer"""
862            layer = self.current_layer()
863            if layer is not None:
864                dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",
865                                        layer.Title())
866                try:
867                    if dlg.ShowModal() == wxID_OK:
868                        title = dlg.GetValue()
869                        if title != "":
870                            layer.SetTitle(title)
871                finally:
872                    dlg.Destroy()
873    
874        def identify_view_on_demand(self, layer, shapes):
875            """Subscribed to the canvas' SHAPES_SELECTED message
876    
877            If the current tool is the identify tool, at least one shape is
878            selected and the identify dialog is not shown, show the dialog.
879            """
880            # If the selection has become empty we don't need to do
881            # anything. Otherwise it could happen that the dialog was popped
882            # up when the selection became empty, e.g. when a new selection
883            # is opened while the identify tool is active and dialog had
884            # been closed
885            if not shapes:
886                return
887    
888          name = "identify_view"          name = "identify_view"
889          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
890              if not self.dialog_open(name):              if not self.dialog_open(name):
891                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
892                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
893                  dialog.Show(true)                  dialog.Show(True)
894              else:              else:
895                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
896                  pass                  pass
897    
898        def __SetTitle(self, title):
899            self.SetTitle("Thuban - " + title)
900    
901  #  #
902  # Define all the commands available in the main window  # Define all the commands available in the main window
903  #  #
# Line 455  class MainWindow(wxFrame): Line 905  class MainWindow(wxFrame):
905    
906  # Helper functions to define common command implementations  # Helper functions to define common command implementations
907  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
908      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
909      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
910    
911  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
912      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
913        """Add a command implemented by a method of the mainwindow object"""
914      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
915                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
916                             sensitive = sensitive, checked = checked))
917    
918    def make_check_current_tool(toolname):
919        """Return a function that tests if the currently active tool is toolname
920    
921        The returned function can be called with the context and returns
922        true iff the currently active tool's name is toolname. It's directly
923        usable as the 'checked' callback of a command.
924        """
925        def check_current_tool(context, name=toolname):
926            return context.mainwindow.canvas.CurrentTool() == name
927        return check_current_tool
928    
929  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
930                    icon = ""):                    icon = "", sensitive = None):
931      """Add a tool command"""      """Add a tool command"""
932      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
933          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
934      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
935                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
936    
937  def _has_selected_layer(context):  def _has_selected_layer(context):
938      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
939      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
940    
941    def _has_selected_shapes(context):
942        """Return true if a layer is selected in the context"""
943        return context.mainwindow.has_selected_shapes()
944    
945    def _can_remove_layer(context):
946        return context.mainwindow.CanRemoveLayer()
947    
948    def _has_tree_window_shown(context):
949        """Return true if the tree window is shown"""
950        return context.mainwindow.SessionTreeShown()
951    
952    def _has_visible_map(context):
953        """Return true iff theres a visible map in the mainwindow.
954    
955        A visible map is a map with at least one visible layer."""
956        map = context.mainwindow.Map()
957        if map is not None:
958            for layer in map.Layers():
959                if layer.Visible():
960                    return 1
961        return 0
962    
963    def _has_legend_shown(context):
964        """Return true if the legend window is shown"""
965        return context.mainwindow.LegendShown()
966    
967    def _has_gdal_support(context):
968        """Return True if the GDAL is available"""
969        return Thuban.Model.resource.has_gdal_support()
970    
971    def _has_dbconnections(context):
972        """Return whether the the session has database connections"""
973        return context.session.HasDBConnections()
974    
975    def _has_postgis_support(context):
976        return has_postgis_support()
977    
978    
979  # File menu  # File menu
980  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
981  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
982  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
983  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
984  _method_command("exit", "&Exit", "Exit")  _method_command("save_session", _("&Save Session"), "SaveSession",
985                    helptext =_("Save this session to the file it was opened from"))
986    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
987                    helptext = _("Save this session to a new file"))
988    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
989                    checked = _has_tree_window_shown,
990                    helptext = _("Toggle on/off the session tree analysis window"))
991    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
992                    checked = _has_legend_shown,
993                    helptext = _("Toggle Legend on/off"))
994    _method_command("database_management", _("&Database Connections..."),
995                    "DatabaseManagement",
996                    sensitive = _has_postgis_support)
997    _method_command("exit", _("E&xit"), "Exit",
998                    helptext = _("Finish working with Thuban"))
999    
1000  # Help menu  # Help menu
1001  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1002                    helptext = _("Info about Thuban authors, version and modules"))
1003    
1004    
1005  # Map menu  # Map menu
1006  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1007                    helptext = _("Set or change the map projection"))
1008    
1009  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1010                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1011  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1012                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1013  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1014                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1015  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1016                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1017  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1018                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1019  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
1020  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1021                  sensitive = _has_visible_map)
1022    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1023                  helptext = _("Add/Remove labels"), icon = "label",
1024                  sensitive = _has_visible_map)
1025    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1026                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1027                  sensitive = _has_visible_map)
1028    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1029                    helptext = _("Zoom to the full layer extent"),
1030                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1031    _method_command("selected_full_extent", _("&Full selection extent"),
1032                    "FullSelectionExtent",
1033                    helptext = _("Zoom to the full selection extent"),
1034                    icon = "fullselextent", sensitive = _has_selected_shapes)
1035    _method_command("map_export", _("E&xport"), "ExportMap",
1036                    helptext = _("Export the map to file"))
1037    _method_command("map_print", _("Prin&t"), "PrintMap",
1038                    helptext = _("Print the map"))
1039    _method_command("map_rename", _("&Rename..."), "RenameMap",
1040                    helptext = _("Rename the map"))
1041    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1042                    helptext = _("Add a new layer to the map"))
1043    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1044                    helptext = _("Add a new image layer to the map"),
1045                    sensitive = _has_gdal_support)
1046    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1047                    helptext = _("Add a new database layer to active map"),
1048                    sensitive = _has_dbconnections)
1049    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1050                    helptext = _("Remove selected layer"),
1051                    sensitive = _can_remove_layer)
1052    
1053  # Layer menu  # Layer menu
1054  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1055                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1056  _method_command("layer_remove", "&Remove", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1057                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1058                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1059  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1060                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1061                  sensitive = _has_selected_layer)                  helptext = _("Rename selected layer"),
 _method_command("layer_transparent_fill", "&Transparent Fill",  
                 "LayerTransparentFill",  
                 helptext = "Do not fill the selected layer(s)",  
1062                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1063  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1064                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Raise selected layer"),
1065                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1066  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1067                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Lower selected layer"),
1068                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1069  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1070                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer visible"),
1071                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1072  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1073                  helptext = "Lower selected layer(s)",                  helptext = _("Make selected layer unvisible"),
1074                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1075  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1076                  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",  
1077                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1078    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1079                    sensitive = _has_selected_layer,
1080                    helptext = _("Edit the properties of the selected layer"))
1081    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1082                    sensitive = _has_selected_layer,
1083                    helptext = _("Join and attach a table to the selected layer"))
1084    
1085    def _can_unjoin(context):
1086        """Return whether the Layer/Unjoin command can be executed.
1087    
1088        This is the case if a layer is selected and that layer has a
1089        shapestore that has an original shapestore.
1090        """
1091        layer = context.mainwindow.SelectedLayer()
1092        if layer is None:
1093            return 0
1094        getstore = getattr(layer, "ShapeStore", None)
1095        if getstore is not None:
1096            return getstore().OrigShapeStore() is not None
1097        else:
1098            return 0
1099    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1100                    sensitive = _can_unjoin,
1101                    helptext = _("Undo the last join operation"))
1102    
1103    
1104    def _has_tables(context):
1105        return bool(context.session.Tables())
1106    
1107    # Table menu
1108    _method_command("table_open", _("&Open..."), "TableOpen",
1109                    helptext = _("Open a DBF-table from a file"))
1110    _method_command("table_close", _("&Close..."), "TableClose",
1111           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1112                    helptext = _("Close one or more tables from a list"))
1113    _method_command("table_rename", _("&Rename..."), "TableRename",
1114                    sensitive = _has_tables,
1115                    helptext = _("Rename one or more tables"))
1116    _method_command("table_show", _("&Show..."), "TableShow",
1117                    sensitive = _has_tables,
1118                    helptext = _("Show one or more tables in a dialog"))
1119    _method_command("table_join", _("&Join..."), "TableJoin",
1120                    sensitive = _has_tables,
1121                    helptext = _("Join two tables creating a new one"))
1122    
1123    #  Export only under Windows ...
1124    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1125                            None,
1126                            "map_rename",
1127                            "map_projection",
1128                            None,
1129                            "map_zoom_in_tool", "map_zoom_out_tool",
1130                            "map_pan_tool",
1131                            "map_full_extent",
1132                            "layer_full_extent",
1133                            "selected_full_extent",
1134                            None,
1135                            "map_identify_tool", "map_label_tool",
1136                            None,
1137                            "toggle_legend",
1138                            None]
1139    if wxPlatform == '__WXMSW__':
1140        map_menu.append("map_export")
1141    map_menu.append("map_print")
1142    
1143    # the menu structure
1144    main_menu = Menu("<main>", "<main>",
1145                     [Menu("file", _("&File"),
1146                           ["new_session", "open_session", None,
1147                            "save_session", "save_session_as", None,
1148                            "database_management", None,
1149                            "toggle_session_tree", None,
1150                            "exit"]),
1151                      Menu("map", _("&Map"), map_menu),
1152                      Menu("layer", _("&Layer"),
1153                           ["layer_rename", "layer_duplicate",
1154                            None,
1155                            "layer_raise", "layer_lower",
1156                            None,
1157                            "layer_show", "layer_hide",
1158                            None,
1159                            "layer_projection",
1160                            None,
1161                            "layer_show_table",
1162                            "layer_jointable",
1163                            "layer_unjointable",
1164                            None,
1165                            "layer_properties"]),
1166                      Menu("table", _("&Table"),
1167                           ["table_open", "table_close", "table_rename",
1168                           None,
1169                           "table_show",
1170                           None,
1171                           "table_join"]),
1172                      Menu("help", _("&Help"),
1173                           ["help_about"])])
1174    
1175    # the main toolbar
1176    
1177    main_toolbar = Menu("<toolbar>", "<toolbar>",
1178                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1179                         "map_full_extent",
1180                         "layer_full_extent",
1181                         "selected_full_extent",
1182                         None,
1183                         "map_identify_tool", "map_label_tool"])
1184    
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