/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 191 by bh, Tue May 28 16:04:49 2002 UTC revision 640 by jonathan, Thu Apr 10 14:36:08 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    from Thuban.UI.classifier import Classifier
34    import legend
35  from menu import Menu  from menu import Menu
36    
37  import main  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      def __init__(self, parent, ID, interactor):      # Some messages that can be subscribed/unsubscribed directly through
55          wxFrame.__init__(self, parent, ID, 'Thuban',      # the MapCanvas come in fact from other objects. This is a map to
56                           wxDefaultPosition, wxSize(400, 300))      # 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,
69                     initial_message = None, size = wxSize(-1, -1)):
70            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
71            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
72    
73          self.interactor = interactor          self.application = application
74    
75          self.CreateStatusBar()          self.CreateStatusBar()
76          self.SetStatusText("This is the wxPython-based "          if initial_message:
77                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
78    
79          self.identify_view = None          self.identify_view = None
80    
# Line 62  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"""
139          self.current_id = 6000          self.current_id = 6000
140          self.id_to_name = {}          self.id_to_name = {}
141          self.name_to_id = {}          self.name_to_id = {}
142            self.events_bound = {}
143    
144      def get_id(self, name):      def get_id(self, name):
145          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 91  class MainWindow(wxFrame): Line 153  class MainWindow(wxFrame):
153              self.id_to_name[ID] = name              self.id_to_name[ID] = name
154          return ID          return ID
155    
156        def bind_command_events(self, command, ID):
157            """Bind the necessary events for the given command and ID"""
158            if not self.events_bound.has_key(ID):
159                # the events haven't been bound yet
160                EVT_MENU(self, ID, self.invoke_command)
161                if command.IsDynamic():
162                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
163    
164      def build_menu_bar(self, menudesc):      def build_menu_bar(self, menudesc):
165          """Build and return the menu bar from the menu description"""          """Build and return the menu bar from the menu description"""
166          menu_bar = wxMenuBar()          menu_bar = wxMenuBar()
# Line 102  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 157  class MainWindow(wxFrame): Line 226  class MainWindow(wxFrame):
226                  ID = self.get_id(name)                  ID = self.get_id(name)
227                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
228                              command.IsCheckCommand())                              command.IsCheckCommand())
229                  EVT_MENU(self, ID, self.invoke_command)                  self.bind_command_events(command, ID)
                 if command.IsDynamic():  
                     EVT_UPDATE_UI(self, ID, self.update_command_ui)  
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 181  class MainWindow(wxFrame): Line 248  class MainWindow(wxFrame):
248                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
249                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
250                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
251                    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              command.Execute(self)              command.Execute(self.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 = 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(self))              sensitive = command.Sensitive(context)
274              event.SetText(command.DynText(self))              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))
284              if command.IsCheckCommand():              if command.IsCheckCommand():
285                  event.Check(command.Checked(self))                      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 218  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 236  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 247  class MainWindow(wxFrame): Line 340  class MainWindow(wxFrame):
340          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
341          a cancel button, otherwise not.          a cancel button, otherwise not.
342          """          """
343          if main.app.session.WasModified():          if self.application.session.WasModified():
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 261  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          main.app.SetSession(create_empty_session())          self.prepare_new_session()
365            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              main.app.OpenSession(dlg.GetPath())              self.prepare_new_session()
372                self.application.OpenSession(dlg.GetPath())
373          dlg.Destroy()          dlg.Destroy()
374    
375      def SaveSession(self):      def SaveSession(self):
376          if main.app.session.filename == None:          if self.application.session.filename == None:
377              self.SaveSessionAs()              self.SaveSessionAs()
378          main.app.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              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
386              main.app.SaveSession()              self.application.SaveSession()
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.SetTitle("Thuban - " + map.Title())
407            #self.legendPanel.SetMap(map)
408    
409        def Map(self):
410            """Return the map displayed by this mainwindow"""
411    
412      def ShowSessionTree(self):          # sanity check
413            #assert(self.canvas.Map() is self.legendPanel.GetMap())
414    
415            return self.canvas.Map()
416    
417        def ToggleSessionTree(self):
418            """If the session tree is shown close it otherwise create a new tree"""
419          name = "session_tree"          name = "session_tree"
420          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
421          if dialog is None:          if dialog is None:
422              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
423              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
424              dialog.Show(true)              dialog.Show(True)
425          else:          else:
426              # FIXME: bring dialog to front here              dialog.Close()
427              pass  
428        def SessionTreeShown(self):
429            """Return true iff the session tree is currently shown"""
430            return self.get_open_dialog("session_tree") is not None
431    
432      def About(self):      def About(self):
433          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
434                             ("Thuban is a program for\n"                             _("Thuban v%s\n"
435                                #"Build Date: %s\n"
436                                "\n"
437                                "Thuban is a program for\n"
438                              "exploring geographic data.\n"                              "exploring geographic data.\n"
439                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
440                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
441                               % __ThubanVersion__), #__BuildDate__)),
442                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
443    
444      def AddLayer(self):      def AddLayer(self):
445          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
446                             wxOPEN)                             wxOPEN)
447          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
448              filename = dlg.GetPath()              filename = dlg.GetPath()
# Line 331  class MainWindow(wxFrame): Line 454  class MainWindow(wxFrame):
454                  map.AddLayer(layer)                  map.AddLayer(layer)
455              except IOError:              except IOError:
456                  # the layer couldn't be opened                  # the layer couldn't be opened
457                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
458                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
459              else:              else:
460                  if not has_layers:                  if not has_layers:
461                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
462                      # new map to the window                      # new map to the window
463                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
464          dlg.Destroy()          dlg.Destroy()
# Line 345  class MainWindow(wxFrame): Line 468  class MainWindow(wxFrame):
468          if layer is not None:          if layer is not None:
469              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
470    
471        def CanRemoveLayer(self):
472            """Return true if the currently selected layer can be deleted.
473    
474            If no layer is selected return False.
475    
476            The return value of this method determines whether the remove
477            layer command is sensitive in menu.
478            """
479            layer = self.current_layer()
480            if layer is not None:
481                return self.canvas.Map().CanRemoveLayer(layer)
482            return False
483    
484      def RaiseLayer(self):      def RaiseLayer(self):
485          layer = self.current_layer()          layer = self.current_layer()
486          if layer is not None:          if layer is not None:
487              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
488            
489      def LowerLayer(self):      def LowerLayer(self):
490          layer = self.current_layer()          layer = self.current_layer()
491          if layer is not None:          if layer is not None:
# Line 360  class MainWindow(wxFrame): Line 496  class MainWindow(wxFrame):
496    
497          If no layer is selected, return None          If no layer is selected, return None
498          """          """
499          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
500    
501      def has_selected_layer(self):      def has_selected_layer(self):
502          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
503          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
504    
505      def choose_color(self):      def choose_color(self):
506          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 382  class MainWindow(wxFrame): Line 518  class MainWindow(wxFrame):
518          dlg.Destroy()          dlg.Destroy()
519          return color          return color
520    
     def LayerFillColor(self):  
         layer = self.current_layer()  
         if layer is not None:  
             color = self.choose_color()  
             if color is not None:  
                 layer.SetFill(color)  
   
     def LayerTransparentFill(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetFill(None)  
   
     def LayerOutlineColor(self):  
         layer = self.current_layer()  
         if layer is not None:  
             color = self.choose_color()  
             if color is not None:  
                 layer.SetStroke(color)  
   
     def LayerNoOutline(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetStroke(None)  
   
521      def HideLayer(self):      def HideLayer(self):
522          layer = self.current_layer()          layer = self.current_layer()
523          if layer is not None:          if layer is not None:
# Line 423  class MainWindow(wxFrame): Line 535  class MainWindow(wxFrame):
535              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
536              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
537              if dialog is None:              if dialog is None:
538                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
539                                                "Table: %s" % layer.Title(),                                                 _("Table: %s") % layer.Title(),
540                                                layer, table)                                                     layer, table)
541                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
542                  dialog.Show(true)                  dialog.Show(true)
543              else:              else:
# Line 449  class MainWindow(wxFrame): Line 561  class MainWindow(wxFrame):
561              map.SetProjection(proj)              map.SetProjection(proj)
562          proj4Dlg.Destroy()          proj4Dlg.Destroy()
563    
564        def LayerEditProperties(self):
565    
566            #
567            # the menu option for this should only be available if there
568            # is a current layer, so we don't need to check if the
569            # current layer is None
570            #
571    
572            layer = self.current_layer()
573            self.OpenLayerProperties(layer)
574    
575        def OpenLayerProperties(self, layer, group = None):
576            name = "layer_properties" + str(id(layer))
577            dialog = self.get_open_dialog(name)
578    
579            if dialog is None:
580                dialog = Classifier(self, name, layer, group)
581                self.add_dialog(name, dialog)
582                dialog.Show()
583            dialog.Raise()
584    
585    
586        def ShowLegend(self):
587            if not self.LegendShown():
588                self.ToggleLegend()
589    
590        def ToggleLegend(self):
591            """Show the legend if it's not shown otherwise hide it again"""
592            name = "legend"
593            dialog = self.FindRegisteredDock(name)
594    
595            if dialog is None:
596                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
597                legend.LegendPanel(dialog, None, self)
598                dialog.Dock()
599                dialog.GetPanel().SetMap(self.Map())
600                dialog.Show()
601            else:
602                dialog.Show(not dialog.IsShown())
603    
604        def LegendShown(self):
605            """Return true iff the legend is currently open"""
606            dialog = self.FindRegisteredDock("legend")
607            return dialog is not None and dialog.IsShown()
608    
609      def ZoomInTool(self):      def ZoomInTool(self):
610          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
611    
# Line 471  class MainWindow(wxFrame): Line 628  class MainWindow(wxFrame):
628      def PrintMap(self):      def PrintMap(self):
629          self.canvas.Print()          self.canvas.Print()
630    
631      def identify_view_on_demand(self, layer, shape):      def identify_view_on_demand(self, layer, shapes):
632          name = "identify_view"          name = "identify_view"
633          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
634              if not self.dialog_open(name):              if not self.dialog_open(name):
635                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
636                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
637                  dialog.Show(true)                  dialog.Show(True)
638              else:              else:
639                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
640                  pass                  pass
# Line 489  class MainWindow(wxFrame): Line 646  class MainWindow(wxFrame):
646    
647  # Helper functions to define common command implementations  # Helper functions to define common command implementations
648  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
649      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
650      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
651    
652  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
653                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
654      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
655      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
656                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
657                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
658    
659    def make_check_current_tool(toolname):
660        """Return a function that tests if the currently active tool is toolname
661    
662        The returned function can be called with the context and returns
663        true iff the currently active tool's name is toolname. It's directly
664        usable as the 'checked' callback of a command.
665        """
666        def check_current_tool(context, name=toolname):
667            return context.mainwindow.canvas.CurrentTool() == name
668        return check_current_tool
669    
670  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
671                    icon = ""):                    icon = "", sensitive = None):
672      """Add a tool command"""      """Add a tool command"""
673      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
674          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
675      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
676                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
677    
678  def _has_selected_layer(context):  def _has_selected_layer(context):
679      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
680      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
681    
682    def _can_remove_layer(context):
683        return context.mainwindow.CanRemoveLayer()
684    
685    def _has_tree_window_shown(context):
686        """Return true if the tree window is shown"""
687        return context.mainwindow.SessionTreeShown()
688    
689    def _has_visible_map(context):
690        """Return true iff theres a visible map in the mainwindow.
691    
692        A visible map is a map with at least one visible layer."""
693        map = context.mainwindow.Map()
694        if map is not None:
695            for layer in map.Layers():
696                if layer.Visible():
697                    return 1
698        return 0
699    
700    def _has_legend_shown(context):
701        """Return true if the legend window is shown"""
702        return context.mainwindow.LegendShown()
703    
704    
705  # File menu  # File menu
706  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
707  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
708  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
709  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
710  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
711  _method_command("exit", "&Exit", "Exit")                  checked = _has_tree_window_shown)
712    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
713                    checked = _has_legend_shown)
714    _method_command("exit", _("E&xit"), "Exit")
715    
716  # Help menu  # Help menu
717  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
718    
719    
720  # Map menu  # Map menu
721  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "Projection")
722    
723  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
724                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
725  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
726                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
727  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
728                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
729  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
730                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
731  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
732                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
733  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
734                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
735  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
736    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
737                  helptext = _("Add/Remove labels"), icon = "label",
738                  sensitive = _has_visible_map)
739    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
740                   helptext = _("Full Extent"), icon = "fullextent",
741                  sensitive = _has_visible_map)
742    _method_command("map_print", _("Prin&t"), "PrintMap",
743                    helptext = _("Print the map"))
744    
745  # Layer menu  # Layer menu
746  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_add", _("&Add Layer"), "AddLayer",
747                  helptext = "Add a new layer to active map")                  helptext = _("Add a new layer to active map"))
748  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
749                  helptext = "Remove selected layer(s)",                  helptext = _("Remove selected layer(s)"),
750                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
751  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
752                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Raise selected layer(s)"),
                 sensitive = _has_selected_layer)  
 _method_command("layer_transparent_fill", "&Transparent Fill",  
                 "LayerTransparentFill",  
                 helptext = "Do not fill the selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",  
                 helptext = "Set the outline color of selected layer(s)",  
753                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
754  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
755                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Lower selected layer(s)"),
756                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
757  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
758                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
759                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
760  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
761                  helptext = "Lower selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
762                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
763  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
764                  helptext = "Make selected layer(s) visible",                  helptext = _("Show the selected layer's table"),
765                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
766  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_properties", _("Properties"), "LayerEditProperties",
                 helptext = "Make selected layer(s) unvisible",  
767                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
 _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  
                 helptext = "Show the selected layer's table",  
                 sensitive = _has_selected_layer)  
   
768    
769  # the menu structure  # the menu structure
770  main_menu = Menu("<main>", "<main>",  main_menu = Menu("<main>", "<main>",
771                   [Menu("file", "&File",                   [Menu("file", _("&File"),
772                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
773                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
774                          "show_session_tree", None,                          "toggle_session_tree", None,
775                          "exit"]),                          "exit"]),
776                    Menu("map", "&Map",                    Menu("map", _("&Map"),
777                         ["layer_add", "layer_remove",                         ["layer_add", "layer_remove",
778                          None,                          None,
779                          "map_projection",                          "map_projection",
# Line 594  main_menu = Menu("<main>", "<main>", Line 783  main_menu = Menu("<main>", "<main>",
783                          None,                          None,
784                          "map_full_extent",                          "map_full_extent",
785                          None,                          None,
786                          "map_print"]),                          "toggle_legend",
                   Menu("layer", "&Layer",  
                        ["layer_fill_color", "layer_transparent_fill",  
                         "layer_outline_color", "layer_no_outline",  
787                          None,                          None,
788                          "layer_raise", "layer_lower",                          "map_print"]),
789                      Menu("layer", _("&Layer"),
790                            ["layer_raise", "layer_lower",
791                          None,                          None,
792                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
793                          None,                          None,
794                          "layer_show_table"]),                          "layer_show_table",
795                    Menu("help", "&Help",                          None,
796                            "layer_properties"]),
797                      Menu("help", _("&Help"),
798                         ["help_about"])])                         ["help_about"])])
799    
800  # the main toolbar  # the main toolbar
801    
802  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
803                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
804                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent", None,
805                         "map_identify_tool", "map_label_tool"])
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