/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 20 by bh, Tue Sep 4 16:44:31 2001 UTC revision 517 by jonathan, Tue Mar 11 17:28:39 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001 by Intevation GmbH  # Copyright (C) 2001, 2002 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  import sys, os  __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"
16    #__BuildDate__ = "$Date$"
17    
18    import os
19    
20  from wxPython.wx import *  from wxPython.wx import *
21    
22  import Thuban  import Thuban
23  from Thuban.Model.session import Session  from Thuban import _
24  from Thuban.Model.map import Map  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
27  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
# Line 27  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    from menu import Menu
35    
36  import main  from context import Context
37  from command import registry, Command  from command import registry, Command, ToolCommand
38    from messages import SELECTED_SHAPE, VIEW_POSITION
39    
40    
41  # the directory where the toolbar icons are stored  # the directory where the toolbar icons are stored
# Line 39  bitmapext = ".xpm" Line 45  bitmapext = ".xpm"
45    
46  class MainWindow(wxFrame):  class MainWindow(wxFrame):
47    
48      def __init__(self, parent, ID):      def __init__(self, parent, ID, title, application, interactor,
49          wxFrame.__init__(self, parent, ID, 'Thuban',                   initial_message = None, size = wxSize(-1, -1)):
50                           wxDefaultPosition, wxSize(400, 300))          wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
51    
52            self.application = application
53            self.interactor = interactor
54    
55          self.CreateStatusBar()          self.CreateStatusBar()
56          self.SetStatusText("This is the wxPython-based "          if initial_message:
57                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
58    
59          self.identify_view = None          self.identify_view = None
60    
61          self.init_ids()          self.init_ids()
62    
63          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
64            self.SetMenuBar(self.build_menu_bar(main_menu))
         menu = wxMenu()  
         menuBar.Append(menu, "&File");  
         for name in ["new_session", "open_session", None,  
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["map_projection",  
                      None,  
                      "map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool",  
                      None,  
                      "map_full_extent",  
                      None,  
                      "map_print"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Layer");  
         for name in ["layer_add", "layer_remove",  
                      None,  
                      "layer_fill_color", "layer_transparent_fill",  
                      "layer_ourline_color", "layer_no_outline",  
                      None,  
                      "layer_raise", "layer_lower",  
                      None,  
                      "layer_show", "layer_hide",  
                      None,  
                      "layer_show_table"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Help");  
         self.add_menu_command(menu, "help_about")  
65    
66          self.SetMenuBar(menuBar)          # Similarly, create the toolbar from main_toolbar
67            toolbar = self.build_toolbar(main_toolbar)
         # toolbar  
         toolbar = self.CreateToolBar(wxTB_3DBUTTONS)  
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool"]:  
             self.add_toolbar_command(toolbar, name)  
68          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
69          toolbar.Realize()          toolbar.Realize()
70    
71          # Create the map canvas          # Create the map canvas
72          canvas = view.MapCanvas(self, -1)          canvas = view.MapCanvas(self, -1, interactor)
73            canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
74          self.canvas = canvas          self.canvas = canvas
75    
76            self.init_dialogs()
77    
78            interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)
79    
80          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
81    
82      def init_ids(self):      def init_ids(self):
# Line 111  class MainWindow(wxFrame): Line 84  class MainWindow(wxFrame):
84          self.current_id = 6000          self.current_id = 6000
85          self.id_to_name = {}          self.id_to_name = {}
86          self.name_to_id = {}          self.name_to_id = {}
87            self.events_bound = {}
88    
89      def get_id(self, name):      def get_id(self, name):
90          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 123  class MainWindow(wxFrame): Line 97  class MainWindow(wxFrame):
97              self.name_to_id[name] = ID              self.name_to_id[name] = ID
98              self.id_to_name[ID] = name              self.id_to_name[ID] = name
99          return ID          return ID
100            
101        def bind_command_events(self, command, ID):
102            """Bind the necessary events for the given command and ID"""
103            if not self.events_bound.has_key(ID):
104                # the events haven't been bound yet
105                EVT_MENU(self, ID, self.invoke_command)
106                if command.IsDynamic():
107                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
108    
109        def build_menu_bar(self, menudesc):
110            """Build and return the menu bar from the menu description"""
111            menu_bar = wxMenuBar()
112    
113            for item in menudesc.items:
114                # here the items must all be Menu instances themselves
115                menu_bar.Append(self.build_menu(item), item.title)
116    
117            return menu_bar
118    
119        def build_menu(self, menudesc):
120            """Return a wxMenu built from the menu description menudesc"""
121            wxmenu = wxMenu()
122            last = None
123            for item in menudesc.items:
124                if item is None:
125                    # a separator. Only add one if the last item was not a
126                    # separator
127                    if last is not None:
128                        wxmenu.AppendSeparator()
129                elif isinstance(item, Menu):
130                    # a submenu
131                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
132                else:
133                    # must the name the name of a command
134                    self.add_menu_command(wxmenu, item)
135                last = item
136            return wxmenu
137    
138        def build_toolbar(self, toolbardesc):
139            """Build and return the main toolbar window from a toolbar description
140    
141            The parameter should be an instance of the Menu class but it
142            should not contain submenus.
143            """
144            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
145    
146            # set the size of the tools' bitmaps. Not needed on wxGTK, but
147            # on Windows, although it doesn't work very well there. It seems
148            # that only 16x16 icons are really supported on windows.
149            # We probably shouldn't hardwire the bitmap size here.
150            toolbar.SetToolBitmapSize(wxSize(24, 24))
151    
152            for item in toolbardesc.items:
153                if item is None:
154                    toolbar.AddSeparator()
155                else:
156                    # assume it's a string.
157                    self.add_toolbar_command(toolbar, item)
158    
159            return toolbar
160    
161      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
162          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
163    
# Line 137  class MainWindow(wxFrame): Line 171  class MainWindow(wxFrame):
171                  ID = self.get_id(name)                  ID = self.get_id(name)
172                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
173                              command.IsCheckCommand())                              command.IsCheckCommand())
174                  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)  
175              else:              else:
176                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
177    
178      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
179          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 161  class MainWindow(wxFrame): Line 193  class MainWindow(wxFrame):
193                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
194                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
195                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
196                    self.bind_command_events(command, ID)
197              else:              else:
198                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
199    
200        def Context(self):
201            """Return the context object for a command invoked from this window
202            """
203            return Context(self.application, self.application.Session(), self)
204    
205      def invoke_command(self, event):      def invoke_command(self, event):
206          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
207          if name is not None:          if name is not None:
208              command = registry.Command(name)              command = registry.Command(name)
209              command.Execute(self)              command.Execute(self.Context())
210          else:          else:
211              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
212    
213      def update_command_ui(self, event):      def update_command_ui(self, event):
214          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
215            context = self.Context()
216          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
217          if command is not None:          if command is not None:
218              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
219              event.SetText(command.DynText(self))              event.Enable(sensitive)
220                if command.IsTool() and not sensitive and command.Checked(context):
221                    # When a checked tool command is disabled deselect all
222                    # tools. Otherwise the tool would remain active but it
223                    # might lead to errors if the tools stays active. This
224                    # problem occurred in GREAT-ER and this fixes it, but
225                    # it's not clear to me whether this is really the best
226                    # way to do it (BH, 20021206).
227                    self.canvas.SelectTool(None)
228                event.SetText(command.DynText(context))
229              if command.IsCheckCommand():              if command.IsCheckCommand():
230                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
231    
232      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
233          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
234          and return the result"""          and return the result"""
235          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
236            dlg.CenterOnParent()
237          result = dlg.ShowModal()          result = dlg.ShowModal()
238          dlg.Destroy()          dlg.Destroy()
239          return result          return result
240    
241        def init_dialogs(self):
242            """Initialize the dialog handling"""
243            # The mainwindow maintains a dict mapping names to open
244            # non-modal dialogs. The dialogs are put into this dict when
245            # they're created and removed when they're closed
246            self.dialogs = {}
247    
248        def add_dialog(self, name, dialog):
249            if self.dialogs.has_key(name):
250                raise RuntimeError(_("The Dialog named %s is already open") % name)
251            self.dialogs[name] = dialog
252    
253        def dialog_open(self, name):
254            return self.dialogs.has_key(name)
255    
256        def remove_dialog(self, name):
257            del self.dialogs[name]
258    
259        def get_open_dialog(self, name):
260            return self.dialogs.get(name)
261    
262        def view_position_changed(self):
263            pos = self.canvas.CurrentPosition()
264            if pos is not None:
265                text = "(%10.10g, %10.10g)" % pos
266            else:
267                text = ""
268            self.set_position_text(text)
269    
270        def set_position_text(self, text):
271            """Set the statusbar text showing the current position.
272    
273            By default the text is shown in field 0 of the status bar.
274            Override this method in derived classes to put it into a
275            different field of the statusbar.
276            """
277            self.SetStatusText(text)
278    
279        def save_modified_session(self, can_veto = 1):
280            """If the current session has been modified, ask the user
281            whether to save it and do so if requested. Return the outcome of
282            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
283            dialog wasn't run return wxID_NO.
284    
285            If the can_veto parameter is true (default) the dialog includes
286            a cancel button, otherwise not.
287            """
288            if self.application.session.WasModified():
289                flags = wxYES_NO | wxICON_QUESTION
290                if can_veto:
291                    flags = flags | wxCANCEL
292                result = self.RunMessageBox(_("Exit"),
293                                            _("The session has been modified."
294                                             " Do you want to save it?"),
295                                            flags)
296                if result == wxID_YES:
297                    self.SaveSession()
298            else:
299                result = wxID_NO
300            return result
301    
302        def prepare_new_session(self):
303            for d in self.dialogs.values():
304                if not isinstance(d, tree.SessionTreeView):
305                    d.Close()
306    
307      def NewSession(self):      def NewSession(self):
308          session = Session("")          self.save_modified_session()
309          session.AddMap(Map(""))          self.prepare_new_session()
310          main.app.SetSession(session)          self.application.SetSession(create_empty_session())
311    
312      def OpenSession(self):      def OpenSession(self):
313          dlg = wxFileDialog(self, "Select a session file", ".", "",          self.save_modified_session()
314                             "*.session", wxOPEN)          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", wxOPEN)
315          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
316              main.app.OpenSession(dlg.GetPath())              self.prepare_new_session()
317                self.application.OpenSession(dlg.GetPath())
318          dlg.Destroy()          dlg.Destroy()
319    
320      def SaveSession(self):      def SaveSession(self):
321          main.app.SaveSession()          if self.application.session.filename == None:
322                self.SaveSessionAs()
323            else:
324                self.application.SaveSession()
325    
326      def SaveSessionAs(self):      def SaveSessionAs(self):
327          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
328                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
329          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
330              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
331              main.app.SaveSession()              self.application.SaveSession()
332          dlg.Destroy()          dlg.Destroy()
333    
334      def Exit(self):      def Exit(self):
335          self.Close(false)          self.Close(false)
336    
337      def OnClose(self, event):      def OnClose(self, event):
338          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
339          if main.app.session.WasModified():          if result == wxID_CANCEL:
             flags = wxYES_NO | wxICON_QUESTION  
             if event.CanVeto():  
                 flags = flags | wxCANCEL  
             result = self.RunMessageBox("Exit",  
                                         ("The session has been modified."  
                                          " Do you want to save it?"),  
                                         flags)  
             if result == wxID_YES:  
                 self.SaveSession()  
             elif result == wxID_CANCEL:  
                 veto = 1  
   
         if veto:  
340              event.Veto()              event.Veto()
341          else:          else:
342                # FIXME: it would be better to tie the unsubscription to
343                # wx's destroy event, but that isn't implemented for wxGTK
344                # yet.
345                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
346              self.Destroy()              self.Destroy()
347    
348      def SetMap(self, map):      def SetMap(self, map):
349          self.canvas.SetMap(map)          self.canvas.SetMap(map)
350    
351        def Map(self):
352            """Return the map displayed by this mainwindow"""
353            return self.canvas.Map()
354    
355        def ShowSessionTree(self):
356            name = "session_tree"
357            dialog = self.get_open_dialog(name)
358            if dialog is None:
359                dialog = tree.SessionTreeView(self, self.application, name)
360                self.add_dialog(name, dialog)
361                dialog.Show(True)
362            else:
363                # FIXME: bring dialog to front here
364                pass
365    
366    
367      def About(self):      def About(self):
368          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
369                             ("Thuban is a program for\n"                             _("Thuban v%s\n"
370                                #"Build Date: %s\n"
371                                "\n"
372                                "Thuban is a program for\n"
373                              "exploring geographic data.\n"                              "exploring geographic data.\n"
374                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
375                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
376                               % __ThubanVersion__), #__BuildDate__)),
377                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
378    
379      def AddLayer(self):      def AddLayer(self):
380          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
381                             wxOPEN)                             wxOPEN)
382          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
383              filename = dlg.GetPath()              filename = dlg.GetPath()
# Line 259  class MainWindow(wxFrame): Line 389  class MainWindow(wxFrame):
389                  map.AddLayer(layer)                  map.AddLayer(layer)
390              except IOError:              except IOError:
391                  # the layer couldn't be opened                  # the layer couldn't be opened
392                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
393                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
394              else:              else:
395                  if not has_layers:                  if not has_layers:
396                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, for the
# Line 273  class MainWindow(wxFrame): Line 403  class MainWindow(wxFrame):
403          if layer is not None:          if layer is not None:
404              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
405    
406        def CanRemoveLayer(self):
407            """Return true if the currently selected layer can be deleted.
408    
409            If no layer is selected return false.
410    
411            The return value of this method determines whether the remove
412            layer command is sensitive in menu.
413            """
414            layer = self.current_layer()
415            if layer is not None:
416                return self.canvas.Map().CanRemoveLayer(layer)
417            return 0
418    
419      def RaiseLayer(self):      def RaiseLayer(self):
420          layer = self.current_layer()          layer = self.current_layer()
421          if layer is not None:          if layer is not None:
422              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
423            
424      def LowerLayer(self):      def LowerLayer(self):
425          layer = self.current_layer()          layer = self.current_layer()
426          if layer is not None:          if layer is not None:
# Line 288  class MainWindow(wxFrame): Line 431  class MainWindow(wxFrame):
431    
432          If no layer is selected, return None          If no layer is selected, return None
433          """          """
434          tree = main.app.tree.tree          return self.interactor.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
435    
436      def has_selected_layer(self):      def has_selected_layer(self):
437          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
438          tree = main.app.tree.tree          return self.interactor.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
439    
440      def choose_color(self):      def choose_color(self):
441          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 321  class MainWindow(wxFrame): Line 458  class MainWindow(wxFrame):
458          if layer is not None:          if layer is not None:
459              color = self.choose_color()              color = self.choose_color()
460              if color is not None:              if color is not None:
461                  layer.SetFill(color)                  layer.GetClassification().SetDefaultFill(color)
462    
463      def LayerTransparentFill(self):      def LayerTransparentFill(self):
464          layer = self.current_layer()          layer = self.current_layer()
465          if layer is not None:          if layer is not None:
466              layer.SetFill(None)              layer.GetClassification().SetDefaultFill(Color.None)
467    
468      def LayerOutlineColor(self):      def LayerOutlineColor(self):
469          layer = self.current_layer()          layer = self.current_layer()
470          if layer is not None:          if layer is not None:
471              color = self.choose_color()              color = self.choose_color()
472              if color is not None:              if color is not None:
473                  layer.SetStroke(color)                  layer.GetClassification().SetDefaultLineColor(color)
474    
475      def LayerNoOutline(self):      def LayerNoOutline(self):
476          layer = self.current_layer()          layer = self.current_layer()
477          if layer is not None:          if layer is not None:
478              layer.SetStroke(None)              layer.GetClassification().SetDefaultLineColor(Color.None)
479    
480      def HideLayer(self):      def HideLayer(self):
481          layer = self.current_layer()          layer = self.current_layer()
# Line 353  class MainWindow(wxFrame): Line 490  class MainWindow(wxFrame):
490      def LayerShowTable(self):      def LayerShowTable(self):
491          layer = self.current_layer()          layer = self.current_layer()
492          if layer is not None:          if layer is not None:
493              tv = tableview.TableFrame(self, layer.table)              table = layer.table
494              tv.Show(true)              name = "table_view" + str(id(table))
495                dialog = self.get_open_dialog(name)
496                if dialog is None:
497                    dialog = tableview.LayerTableFrame(self, self.interactor, name,
498                                                       _("Table: %s") % layer.Title(),
499                                                       layer, table)
500                    self.add_dialog(name, dialog)
501                    dialog.Show(true)
502                else:
503                    # FIXME: bring dialog to front here
504                    pass
505    
506      def Projection(self):      def Projection(self):
507          map = self.canvas.Map()          map = self.canvas.Map()
508          proj = map.projection          proj = map.projection
509          if proj is None:          if proj is None:
510              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())
511          else:          else:
512              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,
513                                                   map.BoundingBox())
514          if proj4Dlg.ShowModal() == wxID_OK:          if proj4Dlg.ShowModal() == wxID_OK:
515              params = proj4Dlg.GetParams()              params = proj4Dlg.GetParams()
516              if params is not None:              if params is not None:
# Line 372  class MainWindow(wxFrame): Line 520  class MainWindow(wxFrame):
520              map.SetProjection(proj)              map.SetProjection(proj)
521          proj4Dlg.Destroy()          proj4Dlg.Destroy()
522    
523        def Classify(self):
524    
525            #
526            # the menu option for this should only be available if there
527            # is a current layer, so we don't need to check if the
528            # current layer is None
529            #
530    
531            layer = self.current_layer()
532            name = "classifier" + str(id(layer))
533            dialog = self.get_open_dialog(name)
534    
535            if dialog is None:
536                dialog = classifier.Classifier(self, self.interactor,
537                                               name, self.current_layer())
538                self.add_dialog(name, dialog)
539                dialog.Show()
540    
541      def ZoomInTool(self):      def ZoomInTool(self):
542          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
543    
# Line 382  class MainWindow(wxFrame): Line 548  class MainWindow(wxFrame):
548          self.canvas.PanTool()          self.canvas.PanTool()
549    
550      def IdentifyTool(self):      def IdentifyTool(self):
         if self.identify_view is None:  
             self.identify_view = identifyview.IdentifyView(self, main.app)  
             self.identify_view.Show(true)  
551          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
552            self.identify_view_on_demand(None, None)
553    
554      def LabelTool(self):      def LabelTool(self):
555          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 396  class MainWindow(wxFrame): Line 560  class MainWindow(wxFrame):
560      def PrintMap(self):      def PrintMap(self):
561          self.canvas.Print()          self.canvas.Print()
562    
563        def identify_view_on_demand(self, layer, shape):
564            name = "identify_view"
565            if self.canvas.CurrentTool() == "IdentifyTool":
566                if not self.dialog_open(name):
567                    dialog = identifyview.IdentifyView(self, self.interactor, name)
568                    self.add_dialog(name, dialog)
569                    dialog.Show(true)
570                else:
571                    # FIXME: bring dialog to front?
572                    pass
573    
574  #  #
575  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 404  class MainWindow(wxFrame): Line 578  class MainWindow(wxFrame):
578    
579  # Helper functions to define common command implementations  # Helper functions to define common command implementations
580  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
581      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
582      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
583    
584  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
585      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None):
586        """Add a command implemented by a method of the mainwindow object"""
587      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
588                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
589                             sensitive = sensitive))
590    
591    def make_check_current_tool(toolname):
592        """Return a function that tests if the currently active tool is toolname
593    
594        The returned function can be called with the context and returns
595        true iff the currently active tool's name is toolname. It's directly
596        usable as the 'checked' callback of a command.
597        """
598        def check_current_tool(context, name=toolname):
599            return context.mainwindow.canvas.CurrentTool() == name
600        return check_current_tool
601    
602  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
603                    icon = ""):                    icon = "", sensitive = None):
604      """Add a tool command"""      """Add a tool command"""
605      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
606          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
607      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
608                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
609    
610  def _has_selected_layer(context):  def _has_selected_layer(context):
611      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
612      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
613    
614    def _can_remove_layer(context):
615        return context.mainwindow.CanRemoveLayer()
616    
617    def _has_tree_window_shown(context):
618        """Return true if the tree window is shown"""
619        return context.mainwindow.get_open_dialog("session_tree") is None
620    
621    def _has_visible_map(context):
622        """Return true iff theres a visible map in the mainwindow.
623    
624        A visible map is a map with at least one visible layer."""
625        map = context.mainwindow.Map()
626        if map is not None:
627            for layer in map.Layers():
628                if layer.Visible():
629                    return 1
630        return 0
631    
632    
633  # File menu  # File menu
634  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
635  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
636  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
637  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
638  _method_command("exit", "&Exit", "Exit")  _method_command("show_session_tree", _("Show Session &Tree"), "ShowSessionTree",
639                    sensitive = _has_tree_window_shown)
640    _method_command("exit", _("E&xit"), "Exit")
641    
642  # Help menu  # Help menu
643  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
644    
645    
646  # Map menu  # Map menu
647  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "Projection")
648    
649  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
650                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
651  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
652                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
653  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
654                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
655  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
656                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
657  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
658                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
659  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
660  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
661                  sensitive = _has_visible_map)
662    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
663                  helptext = _("Add/Remove labels"), icon = "label",
664                  sensitive = _has_visible_map)
665    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
666                   helptext = _("Full Extent"), icon = "fullextent",
667                  sensitive = _has_visible_map)
668    _method_command("map_print", _("Prin&t"), "PrintMap",
669                    helptext = _("Print the map"))
670    
671  # Layer menu  # Layer menu
672  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_add", _("&Add Layer"), "AddLayer",
673                  helptext = "Add a new layer to active map")                  helptext = _("Add a new layer to active map"))
674  _method_command("layer_remove", "&Remove", "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
675                  helptext = "Remove selected layer(s)",                  helptext = _("Remove selected layer(s)"),
676                    sensitive = _can_remove_layer)
677    _method_command("layer_fill_color", _("&Fill Color"), "LayerFillColor",
678                    helptext = _("Set the fill color of selected layer(s)"),
679                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
680  _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",  
681                  "LayerTransparentFill",                  "LayerTransparentFill",
682                  helptext = "Do not fill the selected layer(s)",                  helptext = _("Do not fill the selected layer(s)"),
683                    sensitive = _has_selected_layer)
684    _method_command("layer_outline_color", _("&Outline Color"), "LayerOutlineColor",
685                    helptext = _("Set the outline color of selected layer(s)"),
686                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
687  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_no_outline", _("&No Outline"), "LayerNoOutline",
688                  helptext = "Set the outline color of selected layer(s)",                  helptext= _("Do not draw the outline of the selected layer(s)"),
689                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
690  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
691                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Raise selected layer(s)"),
692                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
693  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
694                  helptext = "Raise selected layer(s)",                  helptext = _("Lower selected layer(s)"),
695                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
696  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
697                  helptext = "Lower selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
698                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
699  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
700                  helptext = "Make selected layer(s) visible",                  helptext = _("Make selected layer(s) unvisible"),
701                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
702  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
703                  helptext = "Make selected layer(s) unvisible",                  helptext = _("Show the selected layer's table"),
704                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
705  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  
706                  helptext = "Show the selected layer's table",  _method_command("layer_classifier", _("Classify"), "Classify",
707                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
708    
709    # the menu structure
710    main_menu = Menu("<main>", "<main>",
711                     [Menu("file", _("&File"),
712                           ["new_session", "open_session", None,
713                            "save_session", "save_session_as", None,
714                            "show_session_tree", None,
715                            "exit"]),
716                      Menu("map", _("&Map"),
717                           ["layer_add", "layer_remove",
718                            None,
719                            "map_projection",
720                            None,
721                            "map_zoom_in_tool", "map_zoom_out_tool",
722                            "map_pan_tool", "map_identify_tool", "map_label_tool",
723                            None,
724                            "map_full_extent",
725                            None,
726                            "map_print"]),
727                      Menu("layer", _("&Layer"),
728                           ["layer_fill_color", "layer_transparent_fill",
729                            "layer_outline_color", "layer_no_outline",
730                            None,
731                            "layer_raise", "layer_lower",
732                            None,
733                            "layer_show", "layer_hide",
734                            None,
735                            "layer_show_table",
736                            None,
737                            "layer_classifier"]),
738                      Menu("help", _("&Help"),
739                           ["help_about"])])
740    
741    # the main toolbar
742    
743    main_toolbar = Menu("<toolbar>", "<toolbar>",
744                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
745                         "map_full_extent", None,
746                         "map_identify_tool", "map_label_tool"])
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