/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 264 by jan, Fri Aug 16 17:06:38 2002 UTC revision 621 by jonathan, Mon Apr 7 10:14:50 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002 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]>
# Line 12  The main window Line 12  The main window
12    
13  __version__ = "$Revision$"  __version__ = "$Revision$"
14    
15    __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"
16    #__BuildDate__ = "$Date$"
17    
18  import os  import os
19    
20  from wxPython.wx import *  from wxPython.wx import *
21    
22  import Thuban  import Thuban
23    from Thuban import _
24  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
25  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
26  from Thuban.Model.color import Color  from Thuban.Model.color import Color
# Line 26  import view Line 30  import view
30  import tree  import tree
31  import proj4dialog  import proj4dialog
32  import tableview, identifyview  import tableview, identifyview
33    import classifier
34    import legend
35  from menu import Menu  from menu import Menu
36    
37  from context import Context  from context import Context
38  from command import registry, Command  from command import registry, Command, ToolCommand
39  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, DOCKABLE_DOCKED, DOCKABLE_UNDOCKED, DOCKABLE_CLOSED
40    
41    from Thuban.UI.dock import DockableWindow, DockFrame, DockPanel
42    
43    
44  # the directory where the toolbar icons are stored  # the directory where the toolbar icons are stored
45  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")
46  bitmapext = ".xpm"  bitmapext = ".xpm"
47    
48    ID_WINDOW_LEGEND = 4001
49    ID_WINDOW_CANVAS = 4002
50    
51    
52  class MainWindow(wxFrame):  class MainWindow(DockFrame):
53    
54        # Some messages that can be subscribed/unsubscribed directly through
55        # the MapCanvas come in fact from other objects. This is a map to
56        # map those messages to the names of the instance variables they
57        # actually come from. This delegation is implemented in the
58        # Subscribe and unsubscribed methods
59        delegated_messages = {LAYER_SELECTED: "canvas",
60                              SHAPES_SELECTED: "canvas"}
61    
62        # Methods delegated to some instance variables. The delegation is
63        # implemented in the __getattr__ method.
64        delegated_methods = {"SelectLayer": "canvas",
65                             "SelectShapes": "canvas",
66                             }
67    
68      def __init__(self, parent, ID, title, application, interactor,      def __init__(self, parent, ID, title, application, interactor,
69                   initial_message = None, size = wxSize(-1, -1)):                   initial_message = None, size = wxSize(-1, -1)):
70          wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)          DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
71            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
72    
73          self.application = application          self.application = application
         self.interactor = interactor  
74    
75          self.CreateStatusBar()          self.CreateStatusBar()
76          if initial_message:          if initial_message:
# Line 63  class MainWindow(wxFrame): Line 88  class MainWindow(wxFrame):
88          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
89          toolbar.Realize()          toolbar.Realize()
90    
91    
92          # Create the map canvas          # Create the map canvas
93          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
94          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
95            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
96          self.canvas = canvas          self.canvas = canvas
97    
98            self.SetMainWindow(self.canvas)
99    
100            self.SetAutoLayout(True)
101    
102          self.init_dialogs()          self.init_dialogs()
103    
104          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          EVT_CLOSE(self, self._OnClose)
105    
106          EVT_CLOSE(self, self.OnClose)      def Subscribe(self, channel, *args):
107            """Subscribe a function to a message channel.
108    
109            If channel is one of the delegated messages call the appropriate
110            object's Subscribe method. Otherwise do nothing.
111            """
112            if channel in self.delegated_messages:
113                object = getattr(self, self.delegated_messages[channel])
114                object.Subscribe(channel, *args)
115            else:
116                print "Trying to subscribe to unsupported channel %s" % channel
117    
118        def Unsubscribe(self, channel, *args):
119            """Unsubscribe a function from a message channel.
120    
121            If channel is one of the delegated messages call the appropriate
122            object's Unsubscribe method. Otherwise do nothing.
123            """
124            if channel in self.delegated_messages:
125                object = getattr(self, self.delegated_messages[channel])
126                object.Unsubscribe(channel, *args)
127    
128        def __getattr__(self, attr):
129            """If attr is one of the delegated methods return that method
130    
131            Otherwise raise AttributeError.
132            """
133            if attr in self.delegated_methods:
134                return getattr(getattr(self, self.delegated_methods[attr]), attr)
135            raise AttributeError(attr)
136    
137      def init_ids(self):      def init_ids(self):
138          """Initialize the ids"""          """Initialize the ids"""
# Line 112  class MainWindow(wxFrame): Line 172  class MainWindow(wxFrame):
172          return menu_bar          return menu_bar
173    
174      def build_menu(self, menudesc):      def build_menu(self, menudesc):
175          """Build and return a wxMenu from a menudescription"""          """Return a wxMenu built from the menu description menudesc"""
176          wxmenu = wxMenu()          wxmenu = wxMenu()
177          last = None          last = None
178          for item in menudesc.items:          for item in menudesc.items:
             # here the items must all be Menu instances themselves  
179              if item is None:              if item is None:
180                  # a separator. Only add one if the last item was not a                  # a separator. Only add one if the last item was not a
181                  # separator                  # separator
# Line 169  class MainWindow(wxFrame): Line 228  class MainWindow(wxFrame):
228                              command.IsCheckCommand())                              command.IsCheckCommand())
229                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
230              else:              else:
231                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
232    
233      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
234          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 191  class MainWindow(wxFrame): Line 250  class MainWindow(wxFrame):
250                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
251                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
252              else:              else:
253                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
254    
255        def Context(self):
256            """Return the context object for a command invoked from this window
257            """
258            return Context(self.application, self.application.Session(), self)
259    
260      def invoke_command(self, event):      def invoke_command(self, event):
261          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
262          if name is not None:          if name is not None:
263              command = registry.Command(name)              command = registry.Command(name)
264              context = Context(self.application, self.application.Session(),              command.Execute(self.Context())
                               self)  
             command.Execute(context)  
265          else:          else:
266              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
267    
268      def update_command_ui(self, event):      def update_command_ui(self, event):
269          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
270          context = Context(self.application, self.application.Session(), self)          context = self.Context()
271          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
272          if command is not None:          if command is not None:
273              event.Enable(command.Sensitive(context))              sensitive = command.Sensitive(context)
274                event.Enable(sensitive)
275                if command.IsTool() and not sensitive and command.Checked(context):
276                    # When a checked tool command is disabled deselect all
277                    # tools. Otherwise the tool would remain active but it
278                    # might lead to errors if the tools stays active. This
279                    # problem occurred in GREAT-ER and this fixes it, but
280                    # it's not clear to me whether this is really the best
281                    # way to do it (BH, 20021206).
282                    self.canvas.SelectTool(None)
283              event.SetText(command.DynText(context))              event.SetText(command.DynText(context))
284              if command.IsCheckCommand():              if command.IsCheckCommand():
285                  event.Check(command.Checked(context))                      event.Check(command.Checked(context))
286    
287      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
288          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
289          and return the result"""          and return the result"""
290          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
291            dlg.CenterOnParent()
292          result = dlg.ShowModal()          result = dlg.ShowModal()
293          dlg.Destroy()          dlg.Destroy()
294          return result          return result
# Line 230  class MainWindow(wxFrame): Line 302  class MainWindow(wxFrame):
302    
303      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
304          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
305              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
306          self.dialogs[name] = dialog          self.dialogs[name] = dialog
307    
308      def dialog_open(self, name):      def dialog_open(self, name):
# Line 248  class MainWindow(wxFrame): Line 320  class MainWindow(wxFrame):
320              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
321          else:          else:
322              text = ""              text = ""
323            self.set_position_text(text)
324    
325        def set_position_text(self, text):
326            """Set the statusbar text showing the current position.
327    
328            By default the text is shown in field 0 of the status bar.
329            Override this method in derived classes to put it into a
330            different field of the statusbar.
331            """
332          self.SetStatusText(text)          self.SetStatusText(text)
333    
334      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
# Line 263  class MainWindow(wxFrame): Line 344  class MainWindow(wxFrame):
344              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
345              if can_veto:              if can_veto:
346                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
347              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
348                                          ("The session has been modified."                                          _("The session has been modified."
349                                           " Do you want to save it?"),                                           " Do you want to save it?"),
350                                          flags)                                          flags)
351              if result == wxID_YES:              if result == wxID_YES:
# Line 273  class MainWindow(wxFrame): Line 354  class MainWindow(wxFrame):
354              result = wxID_NO              result = wxID_NO
355          return result          return result
356    
357        def prepare_new_session(self):
358            for d in self.dialogs.values():
359                if not isinstance(d, tree.SessionTreeView):
360                    d.Close()
361    
362      def NewSession(self):      def NewSession(self):
363          self.save_modified_session()          self.save_modified_session()
364            self.prepare_new_session()
365          self.application.SetSession(create_empty_session())          self.application.SetSession(create_empty_session())
366    
367      def OpenSession(self):      def OpenSession(self):
368          self.save_modified_session()          self.save_modified_session()
369          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", wxOPEN)
                            "*.thuban", wxOPEN)  
370          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
371                self.prepare_new_session()
372              self.application.OpenSession(dlg.GetPath())              self.application.OpenSession(dlg.GetPath())
373          dlg.Destroy()          dlg.Destroy()
374    
375      def SaveSession(self):      def SaveSession(self):
376          if self.application.session.filename == None:          if self.application.session.filename == None:
377              self.SaveSessionAs()              self.SaveSessionAs()
378          self.application.SaveSession()          else:
379                self.application.SaveSession()
380    
381      def SaveSessionAs(self):      def SaveSessionAs(self):
382          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
383                             "*.thuban", wxOPEN)                             "*.thuban", wxOPEN)
384          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
385              self.application.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
# Line 299  class MainWindow(wxFrame): Line 387  class MainWindow(wxFrame):
387          dlg.Destroy()          dlg.Destroy()
388    
389      def Exit(self):      def Exit(self):
390          self.Close(false)          self.Close(False)
391    
392      def OnClose(self, event):      def _OnClose(self, event):
393          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
394          if result == wxID_CANCEL:          if result == wxID_CANCEL:
395              event.Veto()              event.Veto()
396          else:          else:
397                # FIXME: it would be better to tie the unsubscription to
398                # wx's destroy event, but that isn't implemented for wxGTK
399                # yet.
400                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
401                DockFrame._OnClose(self, event)
402              self.Destroy()              self.Destroy()
403    
404      def SetMap(self, map):      def SetMap(self, map):
405          self.canvas.SetMap(map)          self.canvas.SetMap(map)
406            #self.legendPanel.SetMap(map)
407    
408        def Map(self):
409            """Return the map displayed by this mainwindow"""
410    
411            # sanity check
412            #assert(self.canvas.Map() is self.legendPanel.GetMap())
413    
414            return self.canvas.Map()
415    
416      def ShowSessionTree(self):      def ShowSessionTree(self):
417          name = "session_tree"          name = "session_tree"
# Line 317  class MainWindow(wxFrame): Line 419  class MainWindow(wxFrame):
419          if dialog is None:          if dialog is None:
420              dialog = tree.SessionTreeView(self, self.application, name)              dialog = tree.SessionTreeView(self, self.application, name)
421              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
422              dialog.Show(true)              dialog.Show(True)
423          else:          else:
424              # FIXME: bring dialog to front here              # FIXME: bring dialog to front here
425              pass              pass
426    
427    
428      def About(self):      def About(self):
429          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
430                             ("Thuban is a program for\n"                             _("Thuban v%s\n"
431                                #"Build Date: %s\n"
432                                "\n"
433                                "Thuban is a program for\n"
434                              "exploring geographic data.\n"                              "exploring geographic data.\n"
435                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
436                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
437                               % __ThubanVersion__), #__BuildDate__)),
438                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
439    
440      def AddLayer(self):      def AddLayer(self):
441          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
442                             wxOPEN)                             wxOPEN)
443          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
444              filename = dlg.GetPath()              filename = dlg.GetPath()
# Line 343  class MainWindow(wxFrame): Line 450  class MainWindow(wxFrame):
450                  map.AddLayer(layer)                  map.AddLayer(layer)
451              except IOError:              except IOError:
452                  # the layer couldn't be opened                  # the layer couldn't be opened
453                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
454                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
455              else:              else:
456                  if not has_layers:                  if not has_layers:
457                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
458                      # new map to the window                      # new map to the window
459                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
460          dlg.Destroy()          dlg.Destroy()
# Line 357  class MainWindow(wxFrame): Line 464  class MainWindow(wxFrame):
464          if layer is not None:          if layer is not None:
465              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
466    
467        def CanRemoveLayer(self):
468            """Return true if the currently selected layer can be deleted.
469    
470            If no layer is selected return False.
471    
472            The return value of this method determines whether the remove
473            layer command is sensitive in menu.
474            """
475            layer = self.current_layer()
476            if layer is not None:
477                return self.canvas.Map().CanRemoveLayer(layer)
478            return False
479    
480      def RaiseLayer(self):      def RaiseLayer(self):
481          layer = self.current_layer()          layer = self.current_layer()
482          if layer is not None:          if layer is not None:
# Line 372  class MainWindow(wxFrame): Line 492  class MainWindow(wxFrame):
492    
493          If no layer is selected, return None          If no layer is selected, return None
494          """          """
495          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
496    
497      def has_selected_layer(self):      def has_selected_layer(self):
498          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
499          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
500    
501      def choose_color(self):      def choose_color(self):
502          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 399  class MainWindow(wxFrame): Line 519  class MainWindow(wxFrame):
519          if layer is not None:          if layer is not None:
520              color = self.choose_color()              color = self.choose_color()
521              if color is not None:              if color is not None:
522                  layer.SetFill(color)                  layer.GetClassification().SetDefaultFill(color)
523    
524      def LayerTransparentFill(self):      def LayerTransparentFill(self):
525          layer = self.current_layer()          layer = self.current_layer()
526          if layer is not None:          if layer is not None:
527              layer.SetFill(None)              layer.GetClassification().SetDefaultFill(Color.Transparent)
528    
529      def LayerOutlineColor(self):      def LayerOutlineColor(self):
530          layer = self.current_layer()          layer = self.current_layer()
531          if layer is not None:          if layer is not None:
532              color = self.choose_color()              color = self.choose_color()
533              if color is not None:              if color is not None:
534                  layer.SetStroke(color)                  layer.GetClassification().SetDefaultLineColor(color)
535    
536      def LayerNoOutline(self):      def LayerNoOutline(self):
537          layer = self.current_layer()          layer = self.current_layer()
538          if layer is not None:          if layer is not None:
539              layer.SetStroke(None)              layer.GetClassification().SetDefaultLineColor(Color.Transparent)
540    
541      def HideLayer(self):      def HideLayer(self):
542          layer = self.current_layer()          layer = self.current_layer()
# Line 435  class MainWindow(wxFrame): Line 555  class MainWindow(wxFrame):
555              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
556              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
557              if dialog is None:              if dialog is None:
558                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
559                                                "Table: %s" % layer.Title(),                                                 _("Table: %s") % layer.Title(),
560                                                layer, table)                                                     layer, table)
561                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
562                  dialog.Show(true)                  dialog.Show(true)
563              else:              else:
# Line 461  class MainWindow(wxFrame): Line 581  class MainWindow(wxFrame):
581              map.SetProjection(proj)              map.SetProjection(proj)
582          proj4Dlg.Destroy()          proj4Dlg.Destroy()
583    
584        def Classify(self):
585    
586            #
587            # the menu option for this should only be available if there
588            # is a current layer, so we don't need to check if the
589            # current layer is None
590            #
591    
592            layer = self.current_layer()
593            self.OpenClassifier(layer)
594    
595        def OpenClassifier(self, layer, group = None):
596            name = "classifier" + str(id(layer))
597            dialog = self.get_open_dialog(name)
598    
599            if dialog is None:
600                dialog = classifier.Classifier(self, name, layer, group)
601                self.add_dialog(name, dialog)
602                dialog.Show()
603            dialog.Raise()
604    
605    
606        def ShowLegend(self):
607            name = "legend"
608            dialog = self.FindRegisteredDock(name)
609    
610            if dialog is None:
611                title = "Legend: %s" % self.Map().Title()
612                dialog = self.CreateDock(name, -1, title, wxLAYOUT_LEFT)
613                legend.LegendPanel(dialog, None, self)
614                dialog.Dock()
615    
616            dialog.GetPanel().SetMap(self.Map())
617            dialog.Show()
618    
619      def ZoomInTool(self):      def ZoomInTool(self):
620          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
621    
# Line 483  class MainWindow(wxFrame): Line 638  class MainWindow(wxFrame):
638      def PrintMap(self):      def PrintMap(self):
639          self.canvas.Print()          self.canvas.Print()
640    
641      def identify_view_on_demand(self, layer, shape):      def identify_view_on_demand(self, layer, shapes):
642          name = "identify_view"          name = "identify_view"
643          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
644              if not self.dialog_open(name):              if not self.dialog_open(name):
645                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
646                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
647                  dialog.Show(true)                  dialog.Show(True)
648              else:              else:
649                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
650                  pass                  pass
# Line 511  def _method_command(name, title, method, Line 666  def _method_command(name, title, method,
666                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
667                           sensitive = sensitive))                           sensitive = sensitive))
668    
669  def _tool_command(name, title, method, toolname, helptext = "",  def make_check_current_tool(toolname):
670                    icon = ""):      """Return a function that tests if the currently active tool is toolname
671      """Add a tool command"""  
672        The returned function can be called with the context and returns
673        true iff the currently active tool's name is toolname. It's directly
674        usable as the 'checked' callback of a command.
675        """
676      def check_current_tool(context, name=toolname):      def check_current_tool(context, name=toolname):
677          return context.mainwindow.canvas.CurrentTool() == name          return context.mainwindow.canvas.CurrentTool() == name
678      registry.Add(Command(name, title, call_method, args=(method,),      return check_current_tool
679                           helptext = helptext, icon = icon,  
680                           checked = check_current_tool))  def _tool_command(name, title, method, toolname, helptext = "",
681                      icon = "", sensitive = None):
682        """Add a tool command"""
683        registry.Add(ToolCommand(name, title, call_method, args=(method,),
684                                 helptext = helptext, icon = icon,
685                                 checked = make_check_current_tool(toolname),
686                                 sensitive = sensitive))
687    
688  def _has_selected_layer(context):  def _has_selected_layer(context):
689      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
690      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
691    
692    def _can_remove_layer(context):
693        return context.mainwindow.CanRemoveLayer()
694    
695  def _has_tree_window_shown(context):  def _has_tree_window_shown(context):
696      """Return true if the tree window is shown"""      """Return true if the tree window is shown"""
697      return context.mainwindow.get_open_dialog("session_tree") is None      return context.mainwindow.get_open_dialog("session_tree") is None
698    
699    def _has_visible_map(context):
700        """Return true iff theres a visible map in the mainwindow.
701    
702        A visible map is a map with at least one visible layer."""
703        map = context.mainwindow.Map()
704        if map is not None:
705            for layer in map.Layers():
706                if layer.Visible():
707                    return 1
708        return 0
709    
710    def _has_legend_shown(context):
711        """Return true if the legend window is shown"""
712        return context.mainwindow.FindRegisteredDock("legend") is None
713    
714    
715  # File menu  # File menu
716  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
717  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
718  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
719  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
720  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",  _method_command("show_session_tree", _("Session &Tree"), "ShowSessionTree",
721                  sensitive = _has_tree_window_shown)                  sensitive = _has_tree_window_shown)
722  _method_command("exit", "&Exit", "Exit")  _method_command("show_legend", _("Legend"), "ShowLegend",
723                    sensitive = _has_legend_shown)
724    _method_command("exit", _("E&xit"), "Exit")
725    
726  # Help menu  # Help menu
727  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
728    
729    
730  # Map menu  # Map menu
731  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "Projection")
732    
733  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
734                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
735  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
736                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
737  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
738                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
739  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
740                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
741  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
742                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
743  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
744                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
745  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
746    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
747                  helptext = _("Add/Remove labels"), icon = "label",
748                  sensitive = _has_visible_map)
749    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
750                   helptext = _("Full Extent"), icon = "fullextent",
751                  sensitive = _has_visible_map)
752    _method_command("map_print", _("Prin&t"), "PrintMap",
753                    helptext = _("Print the map"))
754    
755  # Layer menu  # Layer menu
756  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_add", _("&Add Layer"), "AddLayer",
757                  helptext = "Add a new layer to active map")                  helptext = _("Add a new layer to active map"))
758  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
759                  helptext = "Remove selected layer(s)",                  helptext = _("Remove selected layer(s)"),
760                    sensitive = _can_remove_layer)
761    _method_command("layer_fill_color", _("&Fill Color"), "LayerFillColor",
762                    helptext = _("Set the fill color of selected layer(s)"),
763                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
764  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_transparent_fill", _("&Transparent Fill"),
                 helptext = "Set the fill color of selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_transparent_fill", "&Transparent Fill",  
765                  "LayerTransparentFill",                  "LayerTransparentFill",
766                  helptext = "Do not fill the selected layer(s)",                  helptext = _("Do not fill the selected layer(s)"),
767                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
768  _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_outline_color", _("&Outline Color"), "LayerOutlineColor",
769                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Set the outline color of selected layer(s)"),
770                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
771  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_no_outline", _("&No Outline"), "LayerNoOutline",
772                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext= _("Do not draw the outline of the selected layer(s)"),
773                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
774  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
775                  helptext = "Raise selected layer(s)",                  helptext = _("Raise selected layer(s)"),
776                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
777  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
778                  helptext = "Lower selected layer(s)",                  helptext = _("Lower selected layer(s)"),
779                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
780  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
781                  helptext = "Make selected layer(s) visible",                  helptext = _("Make selected layer(s) visible"),
782                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
783  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
784                  helptext = "Make selected layer(s) unvisible",                  helptext = _("Make selected layer(s) unvisible"),
785                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
786  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
787                  helptext = "Show the selected layer's table",                  helptext = _("Show the selected layer's table"),
788                    sensitive = _has_selected_layer)
789    _method_command("layer_classifier", _("Classify"), "Classify",
790                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
   
791    
792  # the menu structure  # the menu structure
793  main_menu = Menu("<main>", "<main>",  main_menu = Menu("<main>", "<main>",
794                   [Menu("file", "&File",                   [Menu("file", _("&File"),
795                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
796                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
797                          "show_session_tree", None,                          "show_session_tree",
798                            "show_legend", None,
799                          "exit"]),                          "exit"]),
800                    Menu("map", "&Map",                    Menu("map", _("&Map"),
801                         ["layer_add", "layer_remove",                         ["layer_add", "layer_remove",
802                          None,                          None,
803                          "map_projection",                          "map_projection",
# Line 612  main_menu = Menu("<main>", "<main>", Line 808  main_menu = Menu("<main>", "<main>",
808                          "map_full_extent",                          "map_full_extent",
809                          None,                          None,
810                          "map_print"]),                          "map_print"]),
811                    Menu("layer", "&Layer",                    Menu("layer", _("&Layer"),
812                         ["layer_fill_color", "layer_transparent_fill",                         ["layer_fill_color", "layer_transparent_fill",
813                          "layer_outline_color", "layer_no_outline",                          "layer_outline_color", "layer_no_outline",
814                          None,                          None,
# Line 620  main_menu = Menu("<main>", "<main>", Line 816  main_menu = Menu("<main>", "<main>",
816                          None,                          None,
817                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
818                          None,                          None,
819                          "layer_show_table"]),                          "layer_show_table",
820                    Menu("help", "&Help",                          None,
821                            "layer_classifier"]),
822                      Menu("help", _("&Help"),
823                         ["help_about"])])                         ["help_about"])])
824    
825  # the main toolbar  # the main toolbar
826    
827  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
828                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
829                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent", None,
830                         "map_identify_tool", "map_label_tool"])
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