/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 193 by bh, Wed May 29 10:33:41 2002 UTC revision 2544 by bh, Mon Jan 24 11:19:53 2005 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003, 2004, 2005 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 os  import os
19    import copy
20    
21  from wxPython.wx import *  from wxPython.wx import *
22    
23  import Thuban  import Thuban
24    
25    from Thuban import _
26    from Thuban.Model.messages import TITLE_CHANGED, LAYER_PROJECTION_CHANGED, \
27         MAP_PROJECTION_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED
28    
29  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
30  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
31  from Thuban.Model.color import Color  from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
32  from Thuban.Model.proj import Projection  # 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    import legend
41  from menu import Menu  from menu import Menu
42    
43  import main  from context import Context
44  from command import registry, Command  from command import registry, Command, ToolCommand
45  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
46         MAP_REPLACED
47    from about import About
48  # the directory where the toolbar icons are stored  
49  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  from Thuban.UI.dock import DockFrame
50  bitmapext = ".xpm"  from Thuban.UI.join import JoinDialog
51    from Thuban.UI.dbdialog import DBFrame, DBDialog, ChooseDBTableDialog
52    import resource
53  class MainWindow(wxFrame):  import Thuban.Model.resource
54    
55      def __init__(self, parent, ID, interactor):  import projdialog
56          wxFrame.__init__(self, parent, ID, 'Thuban',  
57                           wxDefaultPosition, wxSize(400, 300))  from Thuban.Lib.classmapper import ClassMapper
58    
59    layer_properties_dialogs = ClassMapper()
60    
61    class MainWindow(DockFrame):
62    
63        # Some messages that can be subscribed/unsubscribed directly through
64        # the MapCanvas come in fact from other objects. This is a map to
65        # map those messages to the names of the instance variables they
66        # actually come from. This delegation is implemented in the
67        # Subscribe and unsubscribed methods
68        delegated_messages = {LAYER_SELECTED: "canvas",
69                              SHAPES_SELECTED: "canvas",
70                              MAP_REPLACED: "canvas"}
71    
72        # Methods delegated to some instance variables. The delegation is
73        # implemented in the __getattr__ method.
74        delegated_methods = {"SelectLayer": "canvas",
75                             "SelectShapes": "canvas",
76                             "SelectedLayer": "canvas",
77                             "SelectedShapes": "canvas",
78                             }
79    
80        # Messages from the canvas that may require a status bar update.
81        # The update_status_bar method will be subscribed to these messages.
82        update_status_bar_messages = (VIEW_POSITION, LAYER_PROJECTION_CHANGED,
83                                      MAP_PROJECTION_CHANGED, MAP_LAYERS_ADDED,
84                                      MAP_LAYERS_REMOVED)
85    
86        def __init__(self, parent, ID, title, application, interactor,
87                     initial_message = None, size = wxSize(-1, -1)):
88            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
89            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
90    
91          self.interactor = interactor          self.application = application
92    
93          self.CreateStatusBar()          self.CreateStatusBar()
94          self.SetStatusText("This is the wxPython-based "          if initial_message:
95                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
96    
97          self.identify_view = None          self.identify_view = None
98    
# Line 62  class MainWindow(wxFrame): Line 106  class MainWindow(wxFrame):
106          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
107          toolbar.Realize()          toolbar.Realize()
108    
109    
110          # Create the map canvas          # Create the map canvas
111          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
112          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
113          self.canvas = canvas          self.canvas = canvas
114            self.canvas.Subscribe(TITLE_CHANGED, self.title_changed)
115    
116            for channel in self.update_status_bar_messages:
117                self.canvas.Subscribe(channel, self.update_status_bar)
118    
119            self.SetMainWindow(self.canvas)
120    
121            self.SetAutoLayout(True)
122    
123          self.init_dialogs()          self.init_dialogs()
124    
125          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          self.ShowLegend()
126    
127          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
128    
129        def Subscribe(self, channel, *args):
130            """Subscribe a function to a message channel.
131    
132            If channel is one of the delegated messages call the appropriate
133            object's Subscribe method. Otherwise do nothing.
134            """
135            if channel in self.delegated_messages:
136                object = getattr(self, self.delegated_messages[channel])
137                object.Subscribe(channel, *args)
138            else:
139                print "Trying to subscribe to unsupported channel %s" % channel
140    
141        def Unsubscribe(self, channel, *args):
142            """Unsubscribe a function from a message channel.
143    
144            If channel is one of the delegated messages call the appropriate
145            object's Unsubscribe method. Otherwise do nothing.
146            """
147            if channel in self.delegated_messages:
148                object = getattr(self, self.delegated_messages[channel])
149                try:
150                    object.Unsubscribe(channel, *args)
151                except wxPyDeadObjectError:
152                    # The object was a wxObject and has already been
153                    # destroyed. Hopefully it has unsubscribed all its
154                    # subscribers already so that it's OK if we do nothing
155                    # here
156                    pass
157    
158        def __getattr__(self, attr):
159            """If attr is one of the delegated methods return that method
160    
161            Otherwise raise AttributeError.
162            """
163            if attr in self.delegated_methods:
164                return getattr(getattr(self, self.delegated_methods[attr]), attr)
165            raise AttributeError(attr)
166    
167      def init_ids(self):      def init_ids(self):
168          """Initialize the ids"""          """Initialize the ids"""
169          self.current_id = 6000          self.current_id = 6000
# Line 111  class MainWindow(wxFrame): Line 202  class MainWindow(wxFrame):
202          return menu_bar          return menu_bar
203    
204      def build_menu(self, menudesc):      def build_menu(self, menudesc):
205          """Build and return a wxMenu from a menudescription"""          """Return a wxMenu built from the menu description menudesc"""
206          wxmenu = wxMenu()          wxmenu = wxMenu()
207          last = None          last = None
208          for item in menudesc.items:          for item in menudesc.items:
             # here the items must all be Menu instances themselves  
209              if item is None:              if item is None:
210                  # a separator. Only add one if the last item was not a                  # a separator. Only add one if the last item was not a
211                  # separator                  # separator
# Line 168  class MainWindow(wxFrame): Line 258  class MainWindow(wxFrame):
258                              command.IsCheckCommand())                              command.IsCheckCommand())
259                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
260              else:              else:
261                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
262    
263      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
264          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 183  class MainWindow(wxFrame): Line 273  class MainWindow(wxFrame):
273              command = registry.Command(name)              command = registry.Command(name)
274              if command is not None:              if command is not None:
275                  ID = self.get_id(name)                  ID = self.get_id(name)
276                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
277                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
278                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
279                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
280                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
281                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
282              else:              else:
283                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
284    
285        def Context(self):
286            """Return the context object for a command invoked from this window
287            """
288            return Context(self.application, self.application.Session(), self)
289    
290      def invoke_command(self, event):      def invoke_command(self, event):
291          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
292          if name is not None:          if name is not None:
293              command = registry.Command(name)              command = registry.Command(name)
294              command.Execute(self)              command.Execute(self.Context())
295          else:          else:
296              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
297    
298      def update_command_ui(self, event):      def update_command_ui(self, event):
299          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
300            context = self.Context()
301          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
302          if command is not None:          if command is not None:
303              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
304              event.SetText(command.DynText(self))              event.Enable(sensitive)
305                if command.IsTool() and not sensitive and command.Checked(context):
306                    # When a checked tool command is disabled deselect all
307                    # tools. Otherwise the tool would remain active but it
308                    # might lead to errors if the tools stays active. This
309                    # problem occurred in GREAT-ER and this fixes it, but
310                    # it's not clear to me whether this is really the best
311                    # way to do it (BH, 20021206).
312                    self.canvas.SelectTool(None)
313                event.SetText(command.DynText(context))
314              if command.IsCheckCommand():              if command.IsCheckCommand():
315                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
316    
317      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
318          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
319          and return the result"""          and return the result"""
320          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
321            dlg.CenterOnParent()
322          result = dlg.ShowModal()          result = dlg.ShowModal()
323          dlg.Destroy()          dlg.Destroy()
324          return result          return result
# Line 226  class MainWindow(wxFrame): Line 332  class MainWindow(wxFrame):
332    
333      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
334          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
335              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
336          self.dialogs[name] = dialog          self.dialogs[name] = dialog
337    
338      def dialog_open(self, name):      def dialog_open(self, name):
# Line 238  class MainWindow(wxFrame): Line 344  class MainWindow(wxFrame):
344      def get_open_dialog(self, name):      def get_open_dialog(self, name):
345          return self.dialogs.get(name)          return self.dialogs.get(name)
346    
347      def view_position_changed(self):      def update_status_bar(self, *args):
348            """Handler for a bunch of messages that may require a status bar update
349    
350            Currently this handles the canvas' VIEW_POSITION_CHANGED
351            messages as well as several messages about changes in the map
352            which may affect whether and how projections are used.
353    
354            These messages affect the text in the status bar in the following way:
355    
356            When VIEW_POSITION_CHANGED messages are sent and the mouse is
357            actually in the canvas window, display the current mouse
358            coordinates as defined by the canvas' CurrentPosition method.
359    
360            If there is no current position to show, check whether there is
361            a potential problem with the map and layer projections and
362            display a message about it.  Otherwise the status bar will
363            become empty.
364    
365            The text is displayed in the status bar using the
366            set_position_text method.
367            """
368            # Implementation note: We do not really have to know which
369            # message was sent.  We can simply call the canvas'
370            # CurrentPosition method and if that returns a tuple, it was a
371            # VIEW_POSITION_CHANGED message and we have to display it.
372            # Otherwise it was a VIEW_POSITION_CHANGED message where the
373            # mouse has left the canvas or it was a message about a change
374            # to the map, in which case we check the projections.
375            #
376            # When changing this method, keep in mind that the
377            # VIEW_POSITION_CHANGED message are sent for every mouse move in
378            # the canvas window, that is they happen very often, so the path
379            # taken in that case has to be fast.
380            text = ""
381          pos = self.canvas.CurrentPosition()          pos = self.canvas.CurrentPosition()
382          if pos is not None:          if pos is not None:
383              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
384          else:          else:
385              text = ""              for layer in self.canvas.Map().Layers():
386                    bbox = layer.LatLongBoundingBox()
387                    if bbox:
388                        left, bottom, right, top = bbox
389                        if not (-180 <= left <= 180 and
390                                -180 <= right <= 180 and
391                                -90 <= top <= 90 and
392                                -90 <= bottom <= 90):
393                            text = _("Select layer '%s' and pick a projection "
394                                     "using Layer/Projection...") % layer.title
395                            break
396    
397            self.set_position_text(text)
398    
399        def set_position_text(self, text):
400            """Set the statusbar text to that created by update_status_bar
401    
402            By default the text is shown in field 0 of the status bar.
403            Override this method in derived classes to put it into a
404            different field of the statusbar.
405    
406            For historical reasons this method is called set_position_text
407            because at first the text was always either the current position
408            or the empty string.  Now it can contain other messages as well.
409            The method will be renamed at one point.
410            """
411            # Note: If this method is renamed we should perhaps think about
412            # some backwards compatibility measures for projects like
413            # GREAT-ER which override this method.
414          self.SetStatusText(text)          self.SetStatusText(text)
415    
416        def OpenOrRaiseDialog(self, name, dialog_class, *args, **kw):
417            """
418            Open or raise a dialog.
419    
420            If a dialog with the denoted name does already exist it is
421            raised.  Otherwise a new dialog, an instance of dialog_class,
422            is created, inserted into the main list and displayed.
423            """
424            dialog = self.get_open_dialog(name)
425    
426            if dialog is None:
427                dialog = dialog_class(self, name, *args, **kw)
428                self.add_dialog(name, dialog)
429                dialog.Show(True)
430            else:
431                dialog.Raise()
432                              
433      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
434          """If the current session has been modified, ask the user          """If the current session has been modified, ask the user
435          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 255  class MainWindow(wxFrame): Line 439  class MainWindow(wxFrame):
439          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
440          a cancel button, otherwise not.          a cancel button, otherwise not.
441          """          """
442          if main.app.session.WasModified():          if self.application.session.WasModified():
443              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
444              if can_veto:              if can_veto:
445                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
446              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
447                                          ("The session has been modified."                                          _("The session has been modified."
448                                           " Do you want to save it?"),                                           " Do you want to save it?"),
449                                          flags)                                          flags)
450              if result == wxID_YES:              if result == wxID_YES:
# Line 270  class MainWindow(wxFrame): Line 454  class MainWindow(wxFrame):
454          return result          return result
455    
456      def NewSession(self):      def NewSession(self):
457          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
458          main.app.SetSession(create_empty_session())              self.application.SetSession(create_empty_session())
459    
460      def OpenSession(self):      def OpenSession(self):
461          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
462          dlg = wxFileDialog(self, "Select a session file", ".", "",              dlg = wxFileDialog(self, _("Open Session"),
463                             "*.thuban", wxOPEN)                                 self.application.Path("data"), "",
464          if dlg.ShowModal() == wxID_OK:                                 "Thuban Session File (*.thuban)|*.thuban",
465              main.app.OpenSession(dlg.GetPath())                                 wxOPEN)
466          dlg.Destroy()              if dlg.ShowModal() == wxID_OK:
467                    self.application.OpenSession(dlg.GetPath(),
468                                                 self.run_db_param_dialog)
469                    self.application.SetPath("data", dlg.GetPath())
470                dlg.Destroy()
471    
472        def run_db_param_dialog(self, parameters, message):
473            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
474                           message)
475            return dlg.RunDialog()
476    
477      def SaveSession(self):      def SaveSession(self):
478          if main.app.session.filename == None:          if self.application.session.filename == None:
479              self.SaveSessionAs()              self.SaveSessionAs()
480          main.app.SaveSession()          else:
481                self.application.SaveSession()
482    
483      def SaveSessionAs(self):      def SaveSessionAs(self):
484          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
485                             "*.thuban", wxOPEN)                             self.application.Path("data"), "",
486                               "Thuban Session File (*.thuban)|*.thuban",
487                               wxSAVE|wxOVERWRITE_PROMPT)
488          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
489              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
490              main.app.SaveSession()              self.application.SaveSession()
491                self.application.SetPath("data",dlg.GetPath())
492          dlg.Destroy()          dlg.Destroy()
493    
494      def Exit(self):      def Exit(self):
495          self.Close(false)          self.Close(False)
496    
497      def OnClose(self, event):      def OnClose(self, event):
498          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
499          if result == wxID_CANCEL:          if result == wxID_CANCEL:
500              event.Veto()              event.Veto()
501          else:          else:
502                # FIXME: it would be better to tie the unsubscription to
503                # wx's destroy event, but that isn't implemented for wxGTK
504                # yet.
505                for channel in self.update_status_bar_messages:
506                    self.canvas.Unsubscribe(channel, self.update_status_bar)
507    
508                DockFrame.OnClose(self, event)
509                for dlg in self.dialogs.values():
510                    dlg.Destroy()
511                self.canvas.Destroy()
512              self.Destroy()              self.Destroy()
513    
514      def SetMap(self, map):      def SetMap(self, map):
515          self.canvas.SetMap(map)          self.canvas.SetMap(map)
516            self.update_title()
517    
518            dialog = self.FindRegisteredDock("legend")
519            if dialog is not None:
520                dialog.GetPanel().SetMap(self.Map())
521    
522      def ShowSessionTree(self):      def Map(self):
523            """Return the map displayed by this mainwindow"""
524    
525            return self.canvas.Map()
526    
527        def ToggleSessionTree(self):
528            """If the session tree is shown close it otherwise create a new tree"""
529          name = "session_tree"          name = "session_tree"
530          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
531          if dialog is None:          if dialog is None:
532              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
533              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
534              dialog.Show(true)              dialog.Show(True)
535          else:          else:
536              # FIXME: bring dialog to front here              dialog.Close()
537              pass  
538        def SessionTreeShown(self):
539            """Return true iff the session tree is currently shown"""
540            return self.get_open_dialog("session_tree") is not None
541    
542      def About(self):      def About(self):
543          self.RunMessageBox("About",          dlg = About(self)
544                             ("Thuban is a program for\n"          dlg.ShowModal()
545                              "exploring geographic data.\n"          dlg.Destroy()
546                              "Copyright (C) 2001 Intevation GmbH.\n"  
547                              "Thuban is licensed under the GPL"),      def DatabaseManagement(self):
548                             wxOK | wxICON_INFORMATION)          name = "dbmanagement"
549            dialog = self.get_open_dialog(name)
550            if dialog is None:
551                map = self.canvas.Map()
552                dialog = DBFrame(self, name, self.application.Session())
553                self.add_dialog(name, dialog)
554                dialog.Show()
555            dialog.Raise()
556    
557      def AddLayer(self):      def AddLayer(self):
558          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
559                               self.application.Path("data"), "",
560                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
561                               _("All Files (*.*)") + "|*.*",
562                               wxOPEN | wxMULTIPLE)
563            if dlg.ShowModal() == wxID_OK:
564                filenames = dlg.GetPaths()
565                for filename in filenames:
566                    title = os.path.splitext(os.path.basename(filename))[0]
567                    map = self.canvas.Map()
568                    has_layers = map.HasLayers()
569                    try:
570                        store = self.application.Session().OpenShapefile(filename)
571                    except IOError:
572                        # the layer couldn't be opened
573                        self.RunMessageBox(_("Add Layer"),
574                                           _("Can't open the file '%s'.")%filename)
575                    else:
576                        layer = Layer(title, store)
577                        map.AddLayer(layer)
578                        if not has_layers:
579                            # if we're adding a layer to an empty map, fit the
580                            # new map to the window
581                            self.canvas.FitMapToWindow()
582                        self.application.SetPath("data",filename)
583            dlg.Destroy()
584    
585        def AddRasterLayer(self):
586            dlg = wxFileDialog(self, _("Select an image file"),
587                               self.application.Path("data"), "", "*.*",
588                             wxOPEN)                             wxOPEN)
589          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
590              filename = dlg.GetPath()              filename = dlg.GetPath()
591              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
592              map = self.canvas.Map()              map = self.canvas.Map()
593              has_layers = map.HasLayers()              has_layers = map.HasLayers()
594              try:              try:
595                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
596              except IOError:              except IOError:
597                  # the layer couldn't be opened                  # the layer couldn't be opened
598                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Image Layer"),
599                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
600              else:              else:
601                    map.AddLayer(layer)
602                  if not has_layers:                  if not has_layers:
603                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
604                      # new map to the window                      # new map to the window
605                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
606                    self.application.SetPath("data", filename)
607            dlg.Destroy()
608    
609        def AddDBLayer(self):
610            """Add a layer read from a database"""
611            session = self.application.Session()
612            dlg = ChooseDBTableDialog(self, self.application.Session())
613    
614            if dlg.ShowModal() == wxID_OK:
615                dbconn, dbtable, id_column, geo_column = dlg.GetTable()
616                try:
617                    title = str(dbtable)
618    
619                    # Chose the correct Interface for the database type
620                    store = session.OpenDBShapeStore(dbconn, dbtable,
621                                                     id_column = id_column,
622                                                     geometry_column = geo_column)
623                    layer = Layer(title, store)
624                except:
625                    # Some error occured while initializing the layer
626                    self.RunMessageBox(_("Add Layer from database"),
627                                       _("Can't open the database table '%s'")
628                                       % dbtable)
629                    return
630    
631                map = self.canvas.Map()
632    
633                has_layers = map.HasLayers()
634                map.AddLayer(layer)
635                if not has_layers:
636                    self.canvas.FitMapToWindow()
637    
638          dlg.Destroy()          dlg.Destroy()
639    
640      def RemoveLayer(self):      def RemoveLayer(self):
# Line 353  class MainWindow(wxFrame): Line 642  class MainWindow(wxFrame):
642          if layer is not None:          if layer is not None:
643              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
644    
645        def CanRemoveLayer(self):
646            """Return true if the currently selected layer can be deleted.
647    
648            If no layer is selected return False.
649    
650            The return value of this method determines whether the remove
651            layer command is sensitive in menu.
652            """
653            layer = self.current_layer()
654            if layer is not None:
655                return self.canvas.Map().CanRemoveLayer(layer)
656            return False
657    
658        def LayerToTop(self):
659            layer = self.current_layer()
660            if layer is not None:
661                self.canvas.Map().MoveLayerToTop(layer)
662    
663      def RaiseLayer(self):      def RaiseLayer(self):
664          layer = self.current_layer()          layer = self.current_layer()
665          if layer is not None:          if layer is not None:
666              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
667            
668      def LowerLayer(self):      def LowerLayer(self):
669          layer = self.current_layer()          layer = self.current_layer()
670          if layer is not None:          if layer is not None:
671              self.canvas.Map().LowerLayer(layer)              self.canvas.Map().LowerLayer(layer)
672    
673        def LayerToBottom(self):
674            layer = self.current_layer()
675            if layer is not None:
676                self.canvas.Map().MoveLayerToBottom(layer)
677    
678      def current_layer(self):      def current_layer(self):
679          """Return the currently selected layer.          """Return the currently selected layer.
680    
681          If no layer is selected, return None          If no layer is selected, return None
682          """          """
683          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
684    
685      def has_selected_layer(self):      def has_selected_layer(self):
686          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
687          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
688    
689      def choose_color(self):      def has_selected_shape_layer(self):
690          """Run the color selection dialog and return the selected color.          """Return true if a shape layer is currently selected"""
691            return isinstance(self.current_layer(), Layer)
692    
693        def has_selected_shapes(self):
694            """Return true if a shape is currently selected"""
695            return self.canvas.HasSelectedShapes()
696    
697          If the user cancels, return None.      def HideLayer(self):
         """  
         dlg = wxColourDialog(self)  
         color = None  
         if dlg.ShowModal() == wxID_OK:  
             data = dlg.GetColourData()  
             wxc = data.GetColour()  
             color = Color(wxc.Red() / 255.0,  
                           wxc.Green() / 255.0,  
                           wxc.Blue() / 255.0)  
         dlg.Destroy()  
         return color  
   
     def LayerFillColor(self):  
698          layer = self.current_layer()          layer = self.current_layer()
699          if layer is not None:          if layer is not None:
700              color = self.choose_color()              layer.SetVisible(False)
             if color is not None:  
                 layer.SetFill(color)  
701    
702      def LayerTransparentFill(self):      def ShowLayer(self):
703          layer = self.current_layer()          layer = self.current_layer()
704          if layer is not None:          if layer is not None:
705              layer.SetFill(None)              layer.SetVisible(True)
706    
707      def LayerOutlineColor(self):      def ToggleLayerVisibility(self):
708          layer = self.current_layer()          layer = self.current_layer()
709          if layer is not None:          layer.SetVisible(not layer.Visible())
             color = self.choose_color()  
             if color is not None:  
                 layer.SetStroke(color)  
710    
711      def LayerNoOutline(self):      def DuplicateLayer(self):
712            """Ceate a new layer above the selected layer with the same shapestore
713            """
714          layer = self.current_layer()          layer = self.current_layer()
715          if layer is not None:          if layer is not None and hasattr(layer, "ShapeStore"):
716              layer.SetStroke(None)              new_layer = Layer(_("Copy of `%s'") % layer.Title(),
717                                  layer.ShapeStore(),
718                                  projection = layer.GetProjection())
719                new_classification = copy.deepcopy(layer.GetClassification())
720                new_layer.SetClassificationColumn(
721                        layer.GetClassificationColumn())
722                new_layer.SetClassification(new_classification)
723                self.Map().AddLayer(new_layer)
724    
725      def HideLayer(self):      def CanDuplicateLayer(self):
726          layer = self.current_layer()          """Return whether the DuplicateLayer method can create a duplicate"""
         if layer is not None:  
             layer.SetVisible(0)  
           
     def ShowLayer(self):  
727          layer = self.current_layer()          layer = self.current_layer()
728          if layer is not None:          return layer is not None and hasattr(layer, "ShapeStore")
             layer.SetVisible(1)  
729    
730      def LayerShowTable(self):      def LayerShowTable(self):
731            """
732            Present a TableView Window for the current layer.
733            In case the window is already open, bring it to the front.
734            In case, there is no active layer, do nothing.
735            In case, the layer has no ShapeStore, do nothing.
736            """
737          layer = self.current_layer()          layer = self.current_layer()
738          if layer is not None:          if layer is not None:
739              table = layer.table              if not hasattr(layer, "ShapeStore"):
740                    return
741                table = layer.ShapeStore().Table()
742              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
743              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
744              if dialog is None:              if dialog is None:
745                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
746                                                "Table: %s" % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
747                                                layer, table)                                           layer, table)
748                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
749                  dialog.Show(true)                  dialog.Show(True)
750              else:              else:
751                  # FIXME: bring dialog to front here                  dialog.Raise()
752                  pass  
753        def MapProjection(self):
754    
755            name = "map_projection"
756            dialog = self.get_open_dialog(name)
757    
758            if dialog is None:
759                map = self.canvas.Map()
760                dialog = projdialog.ProjFrame(self, name,
761                         _("Map Projection: %s") % map.Title(), map)
762                self.add_dialog(name, dialog)
763                dialog.Show()
764            dialog.Raise()
765    
766        def LayerProjection(self):
767    
768            layer = self.current_layer()
769    
770            name = "layer_projection" + str(id(layer))
771            dialog = self.get_open_dialog(name)
772    
773            if dialog is None:
774                map = self.canvas.Map()
775                dialog = projdialog.ProjFrame(self, name,
776                         _("Layer Projection: %s") % layer.Title(), layer)
777                self.add_dialog(name, dialog)
778                dialog.Show()
779            dialog.Raise()
780    
781        def LayerEditProperties(self):
782    
783      def Projection(self):          #
784          map = self.canvas.Map()          # the menu option for this should only be available if there
785          proj = map.projection          # is a current layer, so we don't need to check if the
786          if proj is None:          # current layer is None
787              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())          #
788          else:  
789              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,          layer = self.current_layer()
790                                                 map.BoundingBox())          self.OpenLayerProperties(layer)
791          if proj4Dlg.ShowModal() == wxID_OK:  
792              params = proj4Dlg.GetParams()      def OpenLayerProperties(self, layer, group = None):
793              if params is not None:          """
794                  proj = Projection(params)          Open or raise the properties dialog.
795    
796            This method opens or raises the properties dialog for the
797            currently selected layer if one is defined for this layer
798            type.
799            """
800            dialog_class = layer_properties_dialogs.get(layer)
801    
802            if dialog_class is not None:
803                name = "layer_properties" + str(id(layer))
804                self.OpenOrRaiseDialog(name, dialog_class, layer, group = group)
805    
806        def LayerJoinTable(self):
807            layer = self.canvas.SelectedLayer()
808            if layer is not None:
809                dlg = JoinDialog(self, _("Join Layer with Table"),
810                                 self.application.session,
811                                 layer = layer)
812                dlg.ShowModal()
813    
814        def LayerUnjoinTable(self):
815            layer = self.canvas.SelectedLayer()
816            if layer is not None:
817                orig_store = layer.ShapeStore().OrigShapeStore()
818                if orig_store:
819                    layer.SetShapeStore(orig_store)
820    
821        def ShowLegend(self):
822            if not self.LegendShown():
823                self.ToggleLegend()
824    
825        def ToggleLegend(self):
826            """Show the legend if it's not shown otherwise hide it again"""
827            name = "legend"
828            dialog = self.FindRegisteredDock(name)
829    
830            if dialog is None:
831                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
832                legend.LegendPanel(dialog, None, self)
833                dialog.Dock()
834                dialog.GetPanel().SetMap(self.Map())
835                dialog.Show()
836            else:
837                dialog.Show(not dialog.IsShown())
838    
839        def LegendShown(self):
840            """Return true iff the legend is currently open"""
841            dialog = self.FindRegisteredDock("legend")
842            return dialog is not None and dialog.IsShown()
843    
844        def TableOpen(self):
845            dlg = wxFileDialog(self, _("Open Table"),
846                               self.application.Path("data"), "",
847                               _("DBF Files (*.dbf)") + "|*.dbf|" +
848                               #_("CSV Files (*.csv)") + "|*.csv|" +
849                               _("All Files (*.*)") + "|*.*",
850                               wxOPEN)
851            if dlg.ShowModal() == wxID_OK:
852                filename = dlg.GetPath()
853                dlg.Destroy()
854                try:
855                    table = self.application.session.OpenTableFile(filename)
856                except IOError:
857                    # the layer couldn't be opened
858                    self.RunMessageBox(_("Open Table"),
859                                       _("Can't open the file '%s'.") % filename)
860              else:              else:
861                  proj = None                  self.ShowTableView(table)
862              map.SetProjection(proj)                  self.application.SetPath("data",filename)
863          proj4Dlg.Destroy()  
864        def TableClose(self):
865            tables = self.application.session.UnreferencedTables()
866    
867            lst = [(t.Title(), t) for t in tables]
868            lst.sort()
869            titles = [i[0] for i in lst]
870            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
871                                         _("Close Table"), titles,
872                                         size = (400, 300),
873                                         style = wxDEFAULT_DIALOG_STYLE |
874                                                 wxRESIZE_BORDER)
875            if dlg.ShowModal() == wxID_OK:
876                for i in dlg.GetValue():
877                    self.application.session.RemoveTable(lst[i][1])
878    
879    
880        def TableShow(self):
881            """Offer a multi-selection dialog for tables to be displayed
882    
883            The windows for the selected tables are opened or brought to
884            the front.
885            """
886            tables = self.application.session.Tables()
887    
888            lst = [(t.Title(), t) for t in tables]
889            lst.sort()
890            titles = [i[0] for i in lst]
891            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
892                                         _("Show Table"), titles,
893                                         size = (400,300),
894                                         style = wxDEFAULT_DIALOG_STYLE |
895                                                 wxRESIZE_BORDER)
896            if (dlg.ShowModal() == wxID_OK):
897                for i in dlg.GetValue():
898                    # XXX: if the table belongs to a layer, open a
899                    # LayerTableFrame instead of QueryTableFrame
900                    self.ShowTableView(lst[i][1])
901    
902        def TableJoin(self):
903            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
904            dlg.ShowModal()
905    
906        def ShowTableView(self, table):
907            """Open a table view for the table and optionally"""
908            name = "table_view%d" % id(table)
909            dialog = self.get_open_dialog(name)
910            if dialog is None:
911                dialog = tableview.QueryTableFrame(self, name,
912                                                   _("Table: %s") % table.Title(),
913                                                   table)
914                self.add_dialog(name, dialog)
915                dialog.Show(True)
916            dialog.Raise()
917    
918        def TableRename(self):
919            """Let the user rename a table"""
920    
921            # First, let the user select a table
922            tables = self.application.session.Tables()
923            lst = [(t.Title(), t) for t in tables]
924            lst.sort()
925            titles = [i[0] for i in lst]
926            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
927                                         _("Rename Table"), titles,
928                                         size = (400,300),
929                                         style = wxDEFAULT_DIALOG_STYLE |
930                                                 wxRESIZE_BORDER)
931            if (dlg.ShowModal() == wxID_OK):
932                to_rename = [lst[i][1] for i in dlg.GetValue()]
933                dlg.Destroy()
934            else:
935                to_rename = []
936    
937            # Second, let the user rename the layers
938            for table in to_rename:
939                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
940                                        table.Title())
941                try:
942                    if dlg.ShowModal() == wxID_OK:
943                        title = dlg.GetValue()
944                        if title != "":
945                            table.SetTitle(title)
946    
947                            # Make sure the session is marked as modified.
948                            # FIXME: This should be handled automatically,
949                            # but that requires more changes to the tables
950                            # than I have time for currently.
951                            self.application.session.changed()
952                finally:
953                    dlg.Destroy()
954    
955    
956      def ZoomInTool(self):      def ZoomInTool(self):
957          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 476  class MainWindow(wxFrame): Line 972  class MainWindow(wxFrame):
972      def FullExtent(self):      def FullExtent(self):
973          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
974    
975        def FullLayerExtent(self):
976            self.canvas.FitLayerToWindow(self.current_layer())
977    
978        def FullSelectionExtent(self):
979            self.canvas.FitSelectedToWindow()
980    
981        def ExportMap(self):
982            self.canvas.Export()
983    
984      def PrintMap(self):      def PrintMap(self):
985          self.canvas.Print()          self.canvas.Print()
986    
987      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
988            dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
989                                    self.Map().Title())
990            if dlg.ShowModal() == wxID_OK:
991                title = dlg.GetValue()
992                if title != "":
993                    self.Map().SetTitle(title)
994    
995            dlg.Destroy()
996    
997        def RenameLayer(self):
998            """Let the user rename the currently selected layer"""
999            layer = self.current_layer()
1000            if layer is not None:
1001                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
1002                                        layer.Title())
1003                try:
1004                    if dlg.ShowModal() == wxID_OK:
1005                        title = dlg.GetValue()
1006                        if title != "":
1007                            layer.SetTitle(title)
1008                finally:
1009                    dlg.Destroy()
1010    
1011        def identify_view_on_demand(self, layer, shapes):
1012            """Subscribed to the canvas' SHAPES_SELECTED message
1013    
1014            If the current tool is the identify tool, at least one shape is
1015            selected and the identify dialog is not shown, show the dialog.
1016            """
1017            # If the selection has become empty we don't need to do
1018            # anything. Otherwise it could happen that the dialog was popped
1019            # up when the selection became empty, e.g. when a new selection
1020            # is opened while the identify tool is active and dialog had
1021            # been closed
1022            if not shapes:
1023                return
1024    
1025          name = "identify_view"          name = "identify_view"
1026          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
1027              if not self.dialog_open(name):              if not self.dialog_open(name):
1028                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
1029                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
1030                  dialog.Show(true)                  dialog.Show(True)
1031              else:              else:
1032                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
1033                  pass                  pass
1034    
1035        def title_changed(self, map):
1036            """Subscribed to the canvas' TITLE_CHANGED messages"""
1037            self.update_title()
1038    
1039        def update_title(self):
1040            """Update the window's title according to it's current state.
1041    
1042            In this default implementation the title is 'Thuban - ' followed
1043            by the map's title or simply 'Thuban' if there is not map.
1044            Derived classes should override this method to get different
1045            titles.
1046    
1047            This method is called automatically by other methods when the
1048            title may have to change. For the methods implemented in this
1049            class this usually only means that a different map has been set
1050            or the current map's title has changed.
1051            """
1052            map = self.Map()
1053            if map is not None:
1054                title = _("Thuban - %s") % (map.Title(),)
1055            else:
1056                title = _("Thuban")
1057            self.SetTitle(title)
1058    
1059    
1060  #  #
1061  # Define all the commands available in the main window  # Define all the commands available in the main window
1062  #  #
# Line 497  class MainWindow(wxFrame): Line 1064  class MainWindow(wxFrame):
1064    
1065  # Helper functions to define common command implementations  # Helper functions to define common command implementations
1066  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
1067      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
1068      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
1069    
1070  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
1071                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
1072      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
1073      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
1074                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
1075                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
1076    
1077    def make_check_current_tool(toolname):
1078        """Return a function that tests if the currently active tool is toolname
1079    
1080        The returned function can be called with the context and returns
1081        true iff the currently active tool's name is toolname. It's directly
1082        usable as the 'checked' callback of a command.
1083        """
1084        def check_current_tool(context, name=toolname):
1085            return context.mainwindow.canvas.CurrentTool() == name
1086        return check_current_tool
1087    
1088  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
1089                    icon = ""):                    icon = "", sensitive = None):
1090      """Add a tool command"""      """Add a tool command"""
1091      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
1092          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
1093      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
1094                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
1095    
1096  def _has_selected_layer(context):  def _has_selected_layer(context):
1097      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
1098      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
1099    
1100    def _has_selected_layer_visible(context):
1101        """Return true if a layer is selected in the context which is
1102        visible."""
1103        if context.mainwindow.has_selected_layer():
1104            layer = context.mainwindow.current_layer()
1105            if layer.Visible(): return True
1106        return False
1107    
1108    def _has_selected_shape_layer(context):
1109        """Return true if a shape layer is selected in the context"""
1110        return context.mainwindow.has_selected_shape_layer()
1111    
1112    def _has_selected_shapes(context):
1113        """Return true if a layer is selected in the context"""
1114        return context.mainwindow.has_selected_shapes()
1115    
1116    def _can_remove_layer(context):
1117        return context.mainwindow.CanRemoveLayer()
1118    
1119    def _has_tree_window_shown(context):
1120        """Return true if the tree window is shown"""
1121        return context.mainwindow.SessionTreeShown()
1122    
1123    def _has_visible_map(context):
1124        """Return true iff theres a visible map in the mainwindow.
1125    
1126        A visible map is a map with at least one visible layer."""
1127        map = context.mainwindow.Map()
1128        if map is not None:
1129            for layer in map.Layers():
1130                if layer.Visible():
1131                    return True
1132        return False
1133    
1134    def _has_legend_shown(context):
1135        """Return true if the legend window is shown"""
1136        return context.mainwindow.LegendShown()
1137    
1138    def _has_gdal_support(context):
1139        """Return True if the GDAL is available"""
1140        return Thuban.Model.resource.has_gdal_support()
1141    
1142    def _has_dbconnections(context):
1143        """Return whether the the session has database connections"""
1144        return context.session.HasDBConnections()
1145    
1146    def _has_postgis_support(context):
1147        return has_postgis_support()
1148    
1149    
1150  # File menu  # File menu
1151  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1152  _method_command("open_session", "&Open Session", "OpenSession")                  helptext = _("Start a new session"))
1153  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1154  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")                  helptext = _("Open a session file"))
1155  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("save_session", _("&Save Session"), "SaveSession",
1156  _method_command("exit", "&Exit", "Exit")                  helptext =_("Save this session to the file it was opened from"))
1157    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1158                    helptext = _("Save this session to a new file"))
1159    _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1160                    checked = _has_tree_window_shown,
1161                    helptext = _("Toggle on/off the session tree analysis window"))
1162    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1163                    checked = _has_legend_shown,
1164                    helptext = _("Toggle Legend on/off"))
1165    _method_command("database_management", _("&Database Connections..."),
1166                    "DatabaseManagement",
1167                    sensitive = _has_postgis_support)
1168    _method_command("exit", _("E&xit"), "Exit",
1169                    helptext = _("Finish working with Thuban"))
1170    
1171  # Help menu  # Help menu
1172  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About",
1173                    helptext = _("Info about Thuban authors, version and modules"))
1174    
1175    
1176  # Map menu  # Map menu
1177  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1178                    helptext = _("Set or change the map projection"))
1179    
1180  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1181                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
1182  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
1183                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
1184  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
1185                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
1186  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
1187                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
1188  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
1189                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
1190  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
1191                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
1192  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
1193    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
1194                  helptext = _("Add/Remove labels"), icon = "label",
1195                  sensitive = _has_visible_map)
1196    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1197                   helptext = _("Zoom to the full map extent"), icon = "fullextent",
1198                  sensitive = _has_visible_map)
1199    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1200                    helptext = _("Zoom to the full layer extent"),
1201                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1202    _method_command("selected_full_extent", _("&Full selection extent"),
1203                    "FullSelectionExtent",
1204                    helptext = _("Zoom to the full selection extent"),
1205                    icon = "fullselextent", sensitive = _has_selected_shapes)
1206    _method_command("map_export", _("E&xport"), "ExportMap",
1207                    helptext = _("Export the map to file"))
1208    _method_command("map_print", _("Prin&t"), "PrintMap",
1209                    helptext = _("Print the map"))
1210    _method_command("map_rename", _("&Rename..."), "RenameMap",
1211                    helptext = _("Rename the map"))
1212    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1213                    helptext = _("Add a new layer to the map"))
1214    _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1215                    helptext = _("Add a new image layer to the map"),
1216                    sensitive = _has_gdal_support)
1217    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1218                    helptext = _("Add a new database layer to active map"),
1219                    sensitive = _has_dbconnections)
1220    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1221                    helptext = _("Remove selected layer"),
1222                    sensitive = _can_remove_layer)
1223    
1224  # Layer menu  # Layer menu
1225  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1226                  helptext = "Add a new layer to active map")                  sensitive = _has_selected_layer,
1227  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",                  helptext = _("Specify projection for selected layer"))
1228                  helptext = "Remove selected layer(s)",  _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1229                  sensitive = _has_selected_layer)                  helptext = _("Duplicate selected layer"),
1230  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",            sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1231                  helptext = "Set the fill color of selected layer(s)",  _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1232                    helptext = _("Rename selected layer"),
1233                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1234  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1235                  "LayerTransparentFill",                  helptext = _("Raise selected layer"),
                 helptext = "Do not fill the selected layer(s)",  
1236                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1237  _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1238                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer"),
1239                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1240  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
1241                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer visible"),
1242                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1243  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1244                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer unvisible"),
1245                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1246  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1247                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
1248                    sensitive = _has_selected_shape_layer)
1249    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1250                    sensitive = _has_selected_layer,
1251                    helptext = _("Edit the properties of the selected layer"))
1252    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1253                    sensitive = _has_selected_shape_layer,
1254                    helptext = _("Join and attach a table to the selected layer"))
1255    
1256    # further layer methods:
1257    _method_command("layer_to_top", _("&Top"), "LayerToTop",
1258                    helptext = _("Put selected layer to the top"),
1259                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1260  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_to_bottom", _("&Bottom"), "LayerToBottom",
1261                  helptext = "Make selected layer(s) visible",                  helptext = _("Put selected layer to the bottom"),
1262                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1263  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_visibility", _("&Visible"), "ToggleLayerVisibility",
1264                  helptext = "Make selected layer(s) unvisible",                  checked = _has_selected_layer_visible,
1265                  sensitive = _has_selected_layer)                  helptext = _("Toggle visibility of selected layer"),
 _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  
                 helptext = "Show the selected layer's table",  
1266                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1267    
1268    def _can_unjoin(context):
1269        """Return whether the Layer/Unjoin command can be executed.
1270    
1271  # the menu structure      This is the case if a layer is selected and that layer has a
1272  main_menu = Menu("<main>", "<main>",      shapestore that has an original shapestore.
1273                   [Menu("file", "&File",      """
1274                         ["new_session", "open_session", None,      layer = context.mainwindow.SelectedLayer()
1275                          "save_session", "save_session_as", None,      if layer is None:
1276                          "show_session_tree", None,          return 0
1277                          "exit"]),      getstore = getattr(layer, "ShapeStore", None)
1278                    Menu("map", "&Map",      if getstore is not None:
1279                         ["layer_add", "layer_remove",          return getstore().OrigShapeStore() is not None
1280        else:
1281            return 0
1282    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1283                    sensitive = _can_unjoin,
1284                    helptext = _("Undo the last join operation"))
1285    
1286    
1287    def _has_tables(context):
1288        return bool(context.session.Tables())
1289    
1290    # Table menu
1291    _method_command("table_open", _("&Open..."), "TableOpen",
1292                    helptext = _("Open a DBF-table from a file"))
1293    _method_command("table_close", _("&Close..."), "TableClose",
1294           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1295                    helptext = _("Close one or more tables from a list"))
1296    _method_command("table_rename", _("&Rename..."), "TableRename",
1297                    sensitive = _has_tables,
1298                    helptext = _("Rename one or more tables"))
1299    _method_command("table_show", _("&Show..."), "TableShow",
1300                    sensitive = _has_tables,
1301                    helptext = _("Show one or more tables in a dialog"))
1302    _method_command("table_join", _("&Join..."), "TableJoin",
1303                    sensitive = _has_tables,
1304                    helptext = _("Join two tables creating a new one"))
1305    
1306    #  Export only under Windows ...
1307    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1308                          None,                          None,
1309                            "map_rename",
1310                          "map_projection",                          "map_projection",
1311                          None,                          None,
1312                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1313                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
                         None,  
1314                          "map_full_extent",                          "map_full_extent",
1315                            "layer_full_extent",
1316                            "selected_full_extent",
1317                            None,
1318                            "map_identify_tool", "map_label_tool",
1319                          None,                          None,
1320                          "map_print"]),                          "toggle_legend",
1321                    Menu("layer", "&Layer",                          None]
1322                         ["layer_fill_color", "layer_transparent_fill",  if wxPlatform == '__WXMSW__':
1323                          "layer_outline_color", "layer_no_outline",      map_menu.append("map_export")
1324    map_menu.append("map_print")
1325    
1326    # the menu structure
1327    main_menu = Menu("<main>", "<main>",
1328                     [Menu("file", _("&File"),
1329                           ["new_session", "open_session", None,
1330                            "save_session", "save_session_as", None,
1331                            "database_management", None,
1332                            "toggle_session_tree", None,
1333                            "exit"]),
1334                      Menu("map", _("&Map"), map_menu),
1335                      Menu("layer", _("&Layer"),
1336                           ["layer_rename", "layer_duplicate",
1337                          None,                          None,
1338                          "layer_raise", "layer_lower",                          "layer_raise", "layer_lower",
1339                          None,                          None,
1340                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1341                          None,                          None,
1342                          "layer_show_table"]),                          "layer_projection",
1343                    Menu("help", "&Help",                          None,
1344                            "layer_show_table",
1345                            "layer_jointable",
1346                            "layer_unjointable",
1347                            None,
1348                            "layer_properties"]),
1349                      Menu("table", _("&Table"),
1350                           ["table_open", "table_close", "table_rename",
1351                           None,
1352                           "table_show",
1353                           None,
1354                           "table_join"]),
1355                      Menu("help", _("&Help"),
1356                         ["help_about"])])                         ["help_about"])])
1357    
1358  # the main toolbar  # the main toolbar
1359    
1360  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
1361                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1362                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent",
1363                         "layer_full_extent",
1364                         "selected_full_extent",
1365                         None,
1366                         "map_identify_tool", "map_label_tool"])
1367    
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