/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 6 by bh, Tue Aug 28 15:41:52 2001 UTC revision 307 by bh, Fri Sep 6 10:01:16 2002 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  import os
16    
17  from wxPython.wx import *  from wxPython.wx import *
18    
19  import Thuban  import Thuban
20  from Thuban.Model.session import Session  from Thuban.Model.session import create_empty_session
 from Thuban.Model.map import Map  
21  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
22  from Thuban.Model.color import Color  from Thuban.Model.color import Color
23  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
# Line 27  import view Line 26  import view
26  import tree  import tree
27  import proj4dialog  import proj4dialog
28  import tableview, identifyview  import tableview, identifyview
29    from menu import Menu
30    
31  import main  from context import Context
32  from command import registry, Command  from command import registry, Command
33    from messages import SELECTED_SHAPE, VIEW_POSITION
34    
35    
36  # the directory where the toolbar icons are stored  # the directory where the toolbar icons are stored
# Line 39  bitmapext = ".xpm" Line 40  bitmapext = ".xpm"
40    
41  class MainWindow(wxFrame):  class MainWindow(wxFrame):
42    
43      def __init__(self, parent, ID):      def __init__(self, parent, ID, title, application, interactor,
44          wxFrame.__init__(self, parent, ID, 'Thuban',                   initial_message = None, size = wxSize(-1, -1)):
45                           wxDefaultPosition, wxSize(400, 300))          wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
46    
47            self.application = application
48            self.interactor = interactor
49    
50          self.CreateStatusBar()          self.CreateStatusBar()
51          self.SetStatusText("This is the wxPython-based "          if initial_message:
52                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
53    
54          self.identify_view = None          self.identify_view = None
55    
56          self.init_ids()          self.init_ids()
57    
58          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
59            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")  
60    
61          self.SetMenuBar(menuBar)          # Similarly, create the toolbar from main_toolbar
62            toolbar = self.build_toolbar(main_toolbar)
63          # toolbar          # call Realize to make sure that the tools appear.
64          toolbar = self.CreateToolBar(wxTB_3DBUTTONS)          toolbar.Realize()
         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)  
65    
66          # Create the map canvas          # Create the map canvas
67          canvas = view.MapCanvas(self, -1)          canvas = view.MapCanvas(self, -1, interactor)
68            canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
69          self.canvas = canvas          self.canvas = canvas
70    
71            self.init_dialogs()
72    
73            interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)
74    
75          EVT_CLOSE(self, self.OnClose)          EVT_CLOSE(self, self.OnClose)
76    
77      def init_ids(self):      def init_ids(self):
# Line 109  class MainWindow(wxFrame): Line 79  class MainWindow(wxFrame):
79          self.current_id = 6000          self.current_id = 6000
80          self.id_to_name = {}          self.id_to_name = {}
81          self.name_to_id = {}          self.name_to_id = {}
82            self.events_bound = {}
83    
84      def get_id(self, name):      def get_id(self, name):
85          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 121  class MainWindow(wxFrame): Line 92  class MainWindow(wxFrame):
92              self.name_to_id[name] = ID              self.name_to_id[name] = ID
93              self.id_to_name[ID] = name              self.id_to_name[ID] = name
94          return ID          return ID
95            
96        def bind_command_events(self, command, ID):
97            """Bind the necessary events for the given command and ID"""
98            if not self.events_bound.has_key(ID):
99                # the events haven't been bound yet
100                EVT_MENU(self, ID, self.invoke_command)
101                if command.IsDynamic():
102                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
103    
104        def build_menu_bar(self, menudesc):
105            """Build and return the menu bar from the menu description"""
106            menu_bar = wxMenuBar()
107    
108            for item in menudesc.items:
109                # here the items must all be Menu instances themselves
110                menu_bar.Append(self.build_menu(item), item.title)
111    
112            return menu_bar
113    
114        def build_menu(self, menudesc):
115            """Build and return a wxMenu from a menudescription"""
116            wxmenu = wxMenu()
117            last = None
118            for item in menudesc.items:
119                # here the items must all be Menu instances themselves
120                if item is None:
121                    # a separator. Only add one if the last item was not a
122                    # separator
123                    if last is not None:
124                        wxmenu.AppendSeparator()
125                elif isinstance(item, Menu):
126                    # a submenu
127                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
128                else:
129                    # must the name the name of a command
130                    self.add_menu_command(wxmenu, item)
131                last = item
132            return wxmenu
133    
134        def build_toolbar(self, toolbardesc):
135            """Build and return the main toolbar window from a toolbar description
136    
137            The parameter should be an instance of the Menu class but it
138            should not contain submenus.
139            """
140            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
141    
142            # set the size of the tools' bitmaps. Not needed on wxGTK, but
143            # on Windows, although it doesn't work very well there. It seems
144            # that only 16x16 icons are really supported on windows.
145            # We probably shouldn't hardwire the bitmap size here.
146            toolbar.SetToolBitmapSize(wxSize(24, 24))
147    
148            for item in toolbardesc.items:
149                if item is None:
150                    toolbar.AddSeparator()
151                else:
152                    # assume it's a string.
153                    self.add_toolbar_command(toolbar, item)
154    
155            return toolbar
156    
157      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
158          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
159    
# Line 135  class MainWindow(wxFrame): Line 167  class MainWindow(wxFrame):
167                  ID = self.get_id(name)                  ID = self.get_id(name)
168                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
169                              command.IsCheckCommand())                              command.IsCheckCommand())
170                  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)  
171              else:              else:
172                  print "Unknown command %s" % name                  print "Unknown command %s" % name
173    
# Line 159  class MainWindow(wxFrame): Line 189  class MainWindow(wxFrame):
189                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
190                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
191                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
192                    self.bind_command_events(command, ID)
193              else:              else:
194                  print "Unknown command %s" % name                  print "Unknown command %s" % name
195    
196        def Context(self):
197            """Return the context object for a command invoked from this window
198            """
199            return Context(self.application, self.application.Session(), self)
200    
201      def invoke_command(self, event):      def invoke_command(self, event):
202          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
203          if name is not None:          if name is not None:
204              command = registry.Command(name)              command = registry.Command(name)
205              command.Execute(self)              command.Execute(self.Context())
206          else:          else:
207              print "Unknown command ID %d" % event.GetId()              print "Unknown command ID %d" % event.GetId()
208    
209      def update_command_ui(self, event):      def update_command_ui(self, event):
210          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
211            context = self.Context()
212          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
213          if command is not None:          if command is not None:
214              event.Enable(command.Sensitive(self))              event.Enable(command.Sensitive(context))
215              event.Check(command.Checked(self))              event.SetText(command.DynText(context))
216              event.SetText(command.DynText(self))              if command.IsCheckCommand():
217                    event.Check(command.Checked(context))
218    
219        def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
220            """Run a modal message box with the given text, title and flags
221            and return the result"""
222            dlg = wxMessageDialog(self, text, title, flags)
223            result = dlg.ShowModal()
224            dlg.Destroy()
225            return result
226    
227        def init_dialogs(self):
228            """Initialize the dialog handling"""
229            # The mainwindow maintains a dict mapping names to open
230            # non-modal dialogs. The dialogs are put into this dict when
231            # they're created and removed when they're closed
232            self.dialogs = {}
233    
234        def add_dialog(self, name, dialog):
235            if self.dialogs.has_key(name):
236                raise RuntimeError("The Dialog named %s is already open" % name)
237            self.dialogs[name] = dialog
238    
239        def dialog_open(self, name):
240            return self.dialogs.has_key(name)
241    
242        def remove_dialog(self, name):
243            del self.dialogs[name]
244    
245        def get_open_dialog(self, name):
246            return self.dialogs.get(name)
247    
248        def view_position_changed(self):
249            pos = self.canvas.CurrentPosition()
250            if pos is not None:
251                text = "(%10.10g, %10.10g)" % pos
252            else:
253                text = ""
254            self.SetStatusText(text)
255    
256        def save_modified_session(self, can_veto = 1):
257            """If the current session has been modified, ask the user
258            whether to save it and do so if requested. Return the outcome of
259            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
260            dialog wasn't run return wxID_NO.
261    
262            If the can_veto parameter is true (default) the dialog includes
263            a cancel button, otherwise not.
264            """
265            if self.application.session.WasModified():
266                flags = wxYES_NO | wxICON_QUESTION
267                if can_veto:
268                    flags = flags | wxCANCEL
269                result = self.RunMessageBox("Exit",
270                                            ("The session has been modified."
271                                             " Do you want to save it?"),
272                                            flags)
273                if result == wxID_YES:
274                    self.SaveSession()
275            else:
276                result = wxID_NO
277            return result
278    
279      def NewSession(self):      def NewSession(self):
280          session = Session("")          self.save_modified_session()
281          session.AddMap(Map(""))          self.application.SetSession(create_empty_session())
         main.app.SetSession(session)  
282    
283      def OpenSession(self):      def OpenSession(self):
284            self.save_modified_session()
285          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, "Select a session file", ".", "",
286                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
287          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
288              main.app.OpenSession(dlg.GetPath())              self.application.OpenSession(dlg.GetPath())
289          dlg.Destroy()          dlg.Destroy()
290    
291      def SaveSession(self):      def SaveSession(self):
292          main.app.SaveSession()          if self.application.session.filename == None:
293                self.SaveSessionAs()
294            self.application.SaveSession()
295    
296      def SaveSessionAs(self):      def SaveSessionAs(self):
297          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",
298                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
299          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
300              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
301              main.app.SaveSession()              self.application.SaveSession()
302          dlg.Destroy()          dlg.Destroy()
303    
304      def Exit(self):      def Exit(self):
305          self.Close(false)          self.Close(false)
306    
307      def OnClose(self, event):      def OnClose(self, event):
308          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
309          if main.app.session.WasModified():          if result == wxID_CANCEL:
             flags = wxYES_NO | wxICON_QUESTION  
             if event.CanVeto():  
                 flags = flags | wxCANCEL  
             dlg = wxMessageDialog(self,  
                                   ("The session has been modified."  
                                    " Do you want to save it?"),  
                                   "Exit", flags)  
             result = dlg.ShowModal()  
             dlg.Destroy()  
             if result == wxID_YES:  
                 self.SaveSession()  
             elif result == wxID_CANCEL:  
                 veto = 1  
   
         if veto:  
310              event.Veto()              event.Veto()
311          else:          else:
312                # FIXME: it would be better to tie the unsubscription to
313                # wx's destroy event, but that isn't implemented for wxGTK
314                # yet.
315                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
316              self.Destroy()              self.Destroy()
317    
318      def SetMap(self, map):      def SetMap(self, map):
319          self.canvas.SetMap(map)          self.canvas.SetMap(map)
320    
321        def ShowSessionTree(self):
322            name = "session_tree"
323            dialog = self.get_open_dialog(name)
324            if dialog is None:
325                dialog = tree.SessionTreeView(self, self.application, name)
326                self.add_dialog(name, dialog)
327                dialog.Show(true)
328            else:
329                # FIXME: bring dialog to front here
330                pass
331    
332      def About(self):      def About(self):
333          dlg = wxMessageDialog(self,          self.RunMessageBox("About",
334                                ("Thuban is a program for\n"                             ("Thuban is a program for\n"
335                                 "exploring geographic data.\n"                              "exploring geographic data.\n"
336                                 "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001 Intevation GmbH.\n"
337                                 "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GPL"),
338                                "About", wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
         dlg.ShowModal()  
         dlg.Destroy()  
339    
340      def AddLayer(self):      def AddLayer(self):
341          dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*",          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",
342                             wxOPEN)                             wxOPEN)
343          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
344              filename = dlg.GetPath()              filename = dlg.GetPath()
345              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
346              layer = Layer(title, filename)              layer = Layer(title, filename)
347              self.canvas.Map().AddLayer(layer)              map = self.canvas.Map()
348                has_layers = map.HasLayers()
349                try:
350                    map.AddLayer(layer)
351                except IOError:
352                    # the layer couldn't be opened
353                    self.RunMessageBox("Add Layer",
354                                       "Can't open the file '%s'." % filename)
355                else:
356                    if not has_layers:
357                        # if we're adding a layer to an empty map, for the
358                        # new map to the window
359                        self.canvas.FitMapToWindow()
360          dlg.Destroy()          dlg.Destroy()
361    
362      def RemoveLayer(self):      def RemoveLayer(self):
363          layer = self.current_layer()          layer = self.current_layer()
364          if layer is not None:          if layer is not None:
365              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
366          else:  
367              dlg = wxMessageDialog(self, "No layer is selected.\n",      def CanRemoveLayer(self):
368                                    "Remove layer", wxOK | wxICON_INFORMATION)          """Return true if the currently selected layer can be deleted.
369              dlg.ShowModal()  
370              dlg.Destroy()          If no layer is selected return false.
371    
372            The return value of this method determines whether the remove
373            layer command is sensitive in menu.
374            """
375            layer = self.current_layer()
376            if layer is not None:
377                return self.canvas.Map().CanRemoveLayer(layer)
378            return 0
379    
380      def RaiseLayer(self):      def RaiseLayer(self):
381          layer = self.current_layer()          layer = self.current_layer()
382          if layer is not None:          if layer is not None:
383              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
384            
385      def LowerLayer(self):      def LowerLayer(self):
386          layer = self.current_layer()          layer = self.current_layer()
387          if layer is not None:          if layer is not None:
# Line 274  class MainWindow(wxFrame): Line 392  class MainWindow(wxFrame):
392    
393          If no layer is selected, return None          If no layer is selected, return None
394          """          """
395          tree = main.app.tree.tree          return self.interactor.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
396    
397      def has_selected_layer(self):      def has_selected_layer(self):
398          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
399          tree = main.app.tree.tree          return self.interactor.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
400    
401      def choose_color(self):      def choose_color(self):
402          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 339  class MainWindow(wxFrame): Line 451  class MainWindow(wxFrame):
451      def LayerShowTable(self):      def LayerShowTable(self):
452          layer = self.current_layer()          layer = self.current_layer()
453          if layer is not None:          if layer is not None:
454              tv = tableview.TableFrame(self, layer.table)              table = layer.table
455              tv.Show(true)              name = "table_view" + str(id(table))
456                dialog = self.get_open_dialog(name)
457                if dialog is None:
458                    dialog = tableview.LayerTableFrame(self, self.interactor, name,
459                                                       "Table: %s" % layer.Title(),
460                                                       layer, table)
461                    self.add_dialog(name, dialog)
462                    dialog.Show(true)
463                else:
464                    # FIXME: bring dialog to front here
465                    pass
466    
467      def Projection(self):      def Projection(self):
468          map = self.canvas.Map()          map = self.canvas.Map()
469          proj = map.projection          proj = map.projection
470          if proj is None:          if proj is None:
471              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())
472          else:          else:
473              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,
474                                                   map.BoundingBox())
475          if proj4Dlg.ShowModal() == wxID_OK:          if proj4Dlg.ShowModal() == wxID_OK:
476              params = proj4Dlg.GetParams()              params = proj4Dlg.GetParams()
477              if params is not None:              if params is not None:
# Line 368  class MainWindow(wxFrame): Line 491  class MainWindow(wxFrame):
491          self.canvas.PanTool()          self.canvas.PanTool()
492    
493      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)  
494          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
495            self.identify_view_on_demand(None, None)
496    
497      def LabelTool(self):      def LabelTool(self):
498          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 382  class MainWindow(wxFrame): Line 503  class MainWindow(wxFrame):
503      def PrintMap(self):      def PrintMap(self):
504          self.canvas.Print()          self.canvas.Print()
505    
506        def identify_view_on_demand(self, layer, shape):
507            name = "identify_view"
508            if self.canvas.CurrentTool() == "IdentifyTool":
509                if not self.dialog_open(name):
510                    dialog = identifyview.IdentifyView(self, self.interactor, name)
511                    self.add_dialog(name, dialog)
512                    dialog.Show(true)
513                else:
514                    # FIXME: bring dialog to front?
515                    pass
516    
517  #  #
518  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 390  class MainWindow(wxFrame): Line 521  class MainWindow(wxFrame):
521    
522  # Helper functions to define common command implementations  # Helper functions to define common command implementations
523  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
524      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
525      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
526    
527  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
528      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None):
529        """Add a command implemented by a method of the mainwindow object"""
530      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
531                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
532                             sensitive = sensitive))
533    
534    def make_check_current_tool(toolname):
535        """Return a function that tests if the currently active tool is toolname
536    
537        The returned function can be called with the context and returns
538        true iff the currently active tool's name is toolname. It's directly
539        usable as the 'checked' callback of a command.
540        """
541        def check_current_tool(context, name=toolname):
542            return context.mainwindow.canvas.CurrentTool() == name
543        return check_current_tool
544    
545  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
546                    icon = ""):                    icon = ""):
547      """Add a tool command"""      """Add a tool command"""
     def check_current_tool(context, name=toolname):  
         return context.canvas.CurrentTool() == name  
548      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
549                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
550                           checked = check_current_tool))                           checked = make_check_current_tool(toolname)))
551    
552  def _has_selected_layer(context):  def _has_selected_layer(context):
553      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
554      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
555    
556    def _can_remove_layer(context):
557        return context.mainwindow.CanRemoveLayer()
558    
559    def _has_tree_window_shown(context):
560        """Return true if the tree window is shown"""
561        return context.mainwindow.get_open_dialog("session_tree") is None
562    
563  # File menu  # File menu
564  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", "&New Session", "NewSession")
565  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", "&Open Session", "OpenSession")
566  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", "&Save Session", "SaveSession")
567  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")
568    _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",
569                    sensitive = _has_tree_window_shown)
570  _method_command("exit", "&Exit", "Exit")  _method_command("exit", "&Exit", "Exit")
571    
572  # Help menu  # Help menu
# Line 434  _tool_command("map_identify_tool", "&Ide Line 586  _tool_command("map_identify_tool", "&Ide
586                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = "Switch to map-mode 'identify'", icon = "identify")
587  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",
588                helptext = "Add/Remove labels", icon = "label")                helptext = "Add/Remove labels", icon = "label")
589  _method_command("map_full_extent", "&Full extent", "FullExtent")  _method_command("map_full_extent", "&Full extent", "FullExtent",
590                   helptext = "Full Extent", icon = "fullextent")
591  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")
592    
593  # Layer menu  # Layer menu
594  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_add", "&Add Layer", "AddLayer",
595                  helptext = "Add a new layer to active map")                  helptext = "Add a new layer to active map")
596  _method_command("layer_remove", "&Remove", "RemoveLayer",  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",
597                  helptext = "Remove selected layer(s)",                  helptext = "Remove selected layer(s)",
598                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
599  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",
600                  helptext = "Set the fill color of selected layer(s)",                  helptext = "Set the fill color of selected layer(s)",
601                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
# Line 450  _method_command("layer_transparent_fill" Line 603  _method_command("layer_transparent_fill"
603                  "LayerTransparentFill",                  "LayerTransparentFill",
604                  helptext = "Do not fill the selected layer(s)",                  helptext = "Do not fill the selected layer(s)",
605                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
606  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",
607                  helptext = "Set the outline color of selected layer(s)",                  helptext = "Set the outline color of selected layer(s)",
608                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
609  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",
# Line 471  _method_command("layer_hide", "&Hide", " Line 624  _method_command("layer_hide", "&Hide", "
624  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",
625                  helptext = "Show the selected layer's table",                  helptext = "Show the selected layer's table",
626                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
627    
628    
629    # the menu structure
630    main_menu = Menu("<main>", "<main>",
631                     [Menu("file", "&File",
632                           ["new_session", "open_session", None,
633                            "save_session", "save_session_as", None,
634                            "show_session_tree", None,
635                            "exit"]),
636                      Menu("map", "&Map",
637                           ["layer_add", "layer_remove",
638                            None,
639                            "map_projection",
640                            None,
641                            "map_zoom_in_tool", "map_zoom_out_tool",
642                            "map_pan_tool", "map_identify_tool", "map_label_tool",
643                            None,
644                            "map_full_extent",
645                            None,
646                            "map_print"]),
647                      Menu("layer", "&Layer",
648                           ["layer_fill_color", "layer_transparent_fill",
649                            "layer_outline_color", "layer_no_outline",
650                            None,
651                            "layer_raise", "layer_lower",
652                            None,
653                            "layer_show", "layer_hide",
654                            None,
655                            "layer_show_table"]),
656                      Menu("help", "&Help",
657                           ["help_about"])])
658    
659    # the main toolbar
660    
661    main_toolbar = Menu("<toolbar>", "<toolbar>",
662                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
663                         "map_identify_tool", "map_label_tool", "map_full_extent"])
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