/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 222 by bh, Thu Jul 18 13:03:08 2002 UTC revision 299 by bh, Fri Aug 30 17:41:04 2002 UTC
# Line 28  import proj4dialog Line 28  import proj4dialog
28  import tableview, identifyview  import tableview, identifyview
29  from menu import Menu  from menu import Menu
30    
 import main  
31  from context import Context  from context import Context
32  from command import registry, Command  from command import registry, Command
33  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import SELECTED_SHAPE, VIEW_POSITION
# Line 41  bitmapext = ".xpm" Line 40  bitmapext = ".xpm"
40    
41  class MainWindow(wxFrame):  class MainWindow(wxFrame):
42    
43      def __init__(self, parent, ID, interactor):      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          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    
# Line 193  class MainWindow(wxFrame): Line 193  class MainWindow(wxFrame):
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(Context(main.app, main.app.Session(), 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 = Context(main.app, main.app.Session(), self)          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(context))              event.Enable(command.Sensitive(context))
# Line 257  class MainWindow(wxFrame): Line 262  class MainWindow(wxFrame):
262          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
263          a cancel button, otherwise not.          a cancel button, otherwise not.
264          """          """
265          if main.app.session.WasModified():          if self.application.session.WasModified():
266              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
267              if can_veto:              if can_veto:
268                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
# Line 273  class MainWindow(wxFrame): Line 278  class MainWindow(wxFrame):
278    
279      def NewSession(self):      def NewSession(self):
280          self.save_modified_session()          self.save_modified_session()
281          main.app.SetSession(create_empty_session())          self.application.SetSession(create_empty_session())
282    
283      def OpenSession(self):      def OpenSession(self):
284          self.save_modified_session()          self.save_modified_session()
285          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, "Select a session file", ".", "",
286                             "*.thuban", 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          if main.app.session.filename == None:          if self.application.session.filename == None:
293              self.SaveSessionAs()              self.SaveSessionAs()
294          main.app.SaveSession()          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                             "*.thuban", 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):
# Line 313  class MainWindow(wxFrame): Line 318  class MainWindow(wxFrame):
318          name = "session_tree"          name = "session_tree"
319          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
320          if dialog is None:          if dialog is None:
321              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
322              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
323              dialog.Show(true)              dialog.Show(true)
324          else:          else:
# Line 355  class MainWindow(wxFrame): Line 360  class MainWindow(wxFrame):
360          if layer is not None:          if layer is not None:
361              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
362    
363        def CanRemoveLayer(self):
364            """Return true if the currently selected layer can be deleted.
365    
366            If no layer is selected return false.
367    
368            The return value of this method determines whether the remove
369            layer command is sensitive in menu.
370            """
371            layer = self.current_layer()
372            if layer is not None:
373                return self.canvas.Map().CanRemoveLayer(layer)
374            return 0
375    
376      def RaiseLayer(self):      def RaiseLayer(self):
377          layer = self.current_layer()          layer = self.current_layer()
378          if layer is not None:          if layer is not None:
# Line 433  class MainWindow(wxFrame): Line 451  class MainWindow(wxFrame):
451              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
452              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
453              if dialog is None:              if dialog is None:
454                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, self.interactor, name,
455                                                "Table: %s" % layer.Title(),                                                     "Table: %s" % layer.Title(),
456                                                layer, table)                                                     layer, table)
457                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
458                  dialog.Show(true)                  dialog.Show(true)
459              else:              else:
# Line 509  def _method_command(name, title, method, Line 527  def _method_command(name, title, method,
527                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
528                           sensitive = sensitive))                           sensitive = sensitive))
529    
530    def make_check_current_tool(toolname):
531        """Return a function that tests if the currently active tool is toolname
532    
533        The returned function can be called with the context and returns
534        true iff the currently active tool's name is toolname. It's directly
535        usable as the 'checked' callback of a command.
536        """
537        def check_current_tool(context, name=toolname):
538            return context.mainwindow.canvas.CurrentTool() == name
539        return check_current_tool
540    
541  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
542                    icon = ""):                    icon = ""):
543      """Add a tool command"""      """Add a tool command"""
     def check_current_tool(context, name=toolname):  
         return context.mainwindow.canvas.CurrentTool() == name  
544      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
545                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
546                           checked = check_current_tool))                           checked = make_check_current_tool(toolname)))
547    
548  def _has_selected_layer(context):  def _has_selected_layer(context):
549      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
550      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
551    
552    def _can_remove_layer(context):
553        return context.mainwindow.CanRemoveLayer()
554    
555    def _has_tree_window_shown(context):
556        """Return true if the tree window is shown"""
557        return context.mainwindow.get_open_dialog("session_tree") is None
558    
559  # File menu  # File menu
560  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", "&New Session", "NewSession")
561  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", "&Open Session", "OpenSession")
562  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", "&Save Session", "SaveSession")
563  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")
564  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",
565                    sensitive = _has_tree_window_shown)
566  _method_command("exit", "&Exit", "Exit")  _method_command("exit", "&Exit", "Exit")
567    
568  # Help menu  # Help menu
# Line 556  _method_command("layer_add", "&Add Layer Line 591  _method_command("layer_add", "&Add Layer
591                  helptext = "Add a new layer to active map")                  helptext = "Add a new layer to active map")
592  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",
593                  helptext = "Remove selected layer(s)",                  helptext = "Remove selected layer(s)",
594                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
595  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",
596                  helptext = "Set the fill color of selected layer(s)",                  helptext = "Set the fill color of selected layer(s)",
597                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
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