/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 1309 by jonathan, Thu Jun 26 17:00:44 2003 UTC revision 2544 by bh, Mon Jan 24 11:19:53 2005 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002, 2003 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003, 2004, 2005 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    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    # $Source$
16  __ThubanVersion__ = "0.8" #"$THUBAN_0_2$"  # $Id$
 #__BuildDate__ = "$Date$"  
17    
18  import os  import os
19  import copy  import copy
20    
21  from wxPython.wx import *  from wxPython.wx import *
 from wxPython.wx import __version__ as wxPython_version  
22    
23  import Thuban  import Thuban
 import Thuban.version  
24    
25  from Thuban import _  from Thuban import _
26    from Thuban.Model.messages import TITLE_CHANGED, LAYER_PROJECTION_CHANGED, \
27         MAP_PROJECTION_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED
28    
29  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
30  from Thuban.Model.layer import Layer, RasterLayer  from Thuban.Model.layer import Layer, RasterLayer
31    from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
32  # XXX: replace this by  # XXX: replace this by
33  # from wxPython.lib.dialogs import wxMultipleChoiceDialog  # from wxPython.lib.dialogs import wxMultipleChoiceDialog
34  # when Thuban does not support wxPython 2.4.0 any more.  # when Thuban does not support wxPython 2.4.0 any more.
# Line 37  from Thuban.UI.multiplechoicedialog impo Line 37  from Thuban.UI.multiplechoicedialog impo
37  import view  import view
38  import tree  import tree
39  import tableview, identifyview  import tableview, identifyview
 from Thuban.UI.classifier import Classifier  
40  import legend  import legend
41  from menu import Menu  from menu import Menu
42    
43  from context import Context  from context import Context
44  from command import registry, Command, ToolCommand  from command import registry, Command, ToolCommand
45  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
46         MAP_REPLACED
47  from about import About  from about import About
48    
49  from Thuban.UI.dock import DockFrame  from Thuban.UI.dock import DockFrame
50  from Thuban.UI.join import JoinDialog  from Thuban.UI.join import JoinDialog
51    from Thuban.UI.dbdialog import DBFrame, DBDialog, ChooseDBTableDialog
52  import resource  import resource
53  import Thuban.Model.resource  import Thuban.Model.resource
54    
55  import projdialog  import projdialog
56    
57    from Thuban.Lib.classmapper import ClassMapper
58    
59    layer_properties_dialogs = ClassMapper()
60    
61  class MainWindow(DockFrame):  class MainWindow(DockFrame):
62    
# Line 63  class MainWindow(DockFrame): Line 66  class MainWindow(DockFrame):
66      # actually come from. This delegation is implemented in the      # actually come from. This delegation is implemented in the
67      # Subscribe and unsubscribed methods      # Subscribe and unsubscribed methods
68      delegated_messages = {LAYER_SELECTED: "canvas",      delegated_messages = {LAYER_SELECTED: "canvas",
69                            SHAPES_SELECTED: "canvas"}                            SHAPES_SELECTED: "canvas",
70                              MAP_REPLACED: "canvas"}
71    
72      # Methods delegated to some instance variables. The delegation is      # Methods delegated to some instance variables. The delegation is
73      # implemented in the __getattr__ method.      # implemented in the __getattr__ method.
# Line 73  class MainWindow(DockFrame): Line 77  class MainWindow(DockFrame):
77                           "SelectedShapes": "canvas",                           "SelectedShapes": "canvas",
78                           }                           }
79    
80        # Messages from the canvas that may require a status bar update.
81        # The update_status_bar method will be subscribed to these messages.
82        update_status_bar_messages = (VIEW_POSITION, LAYER_PROJECTION_CHANGED,
83                                      MAP_PROJECTION_CHANGED, MAP_LAYERS_ADDED,
84                                      MAP_LAYERS_REMOVED)
85    
86      def __init__(self, parent, ID, title, application, interactor,      def __init__(self, parent, ID, title, application, interactor,
87                   initial_message = None, size = wxSize(-1, -1)):                   initial_message = None, size = wxSize(-1, -1)):
88          DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)          DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
# Line 99  class MainWindow(DockFrame): Line 109  class MainWindow(DockFrame):
109    
110          # Create the map canvas          # Create the map canvas
111          canvas = view.MapCanvas(self, -1)          canvas = view.MapCanvas(self, -1)
         canvas.Subscribe(VIEW_POSITION, self.view_position_changed)  
112          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
113          self.canvas = canvas          self.canvas = canvas
114            self.canvas.Subscribe(TITLE_CHANGED, self.title_changed)
115    
116            for channel in self.update_status_bar_messages:
117                self.canvas.Subscribe(channel, self.update_status_bar)
118    
119          self.SetMainWindow(self.canvas)          self.SetMainWindow(self.canvas)
120    
# Line 133  class MainWindow(DockFrame): Line 146  class MainWindow(DockFrame):
146          """          """
147          if channel in self.delegated_messages:          if channel in self.delegated_messages:
148              object = getattr(self, self.delegated_messages[channel])              object = getattr(self, self.delegated_messages[channel])
149              object.Unsubscribe(channel, *args)              try:
150                    object.Unsubscribe(channel, *args)
151                except wxPyDeadObjectError:
152                    # The object was a wxObject and has already been
153                    # destroyed. Hopefully it has unsubscribed all its
154                    # subscribers already so that it's OK if we do nothing
155                    # here
156                    pass
157    
158      def __getattr__(self, attr):      def __getattr__(self, attr):
159          """If attr is one of the delegated methods return that method          """If attr is one of the delegated methods return that method
# Line 324  class MainWindow(DockFrame): Line 344  class MainWindow(DockFrame):
344      def get_open_dialog(self, name):      def get_open_dialog(self, name):
345          return self.dialogs.get(name)          return self.dialogs.get(name)
346    
347      def view_position_changed(self):      def update_status_bar(self, *args):
348            """Handler for a bunch of messages that may require a status bar update
349    
350            Currently this handles the canvas' VIEW_POSITION_CHANGED
351            messages as well as several messages about changes in the map
352            which may affect whether and how projections are used.
353    
354            These messages affect the text in the status bar in the following way:
355    
356            When VIEW_POSITION_CHANGED messages are sent and the mouse is
357            actually in the canvas window, display the current mouse
358            coordinates as defined by the canvas' CurrentPosition method.
359    
360            If there is no current position to show, check whether there is
361            a potential problem with the map and layer projections and
362            display a message about it.  Otherwise the status bar will
363            become empty.
364    
365            The text is displayed in the status bar using the
366            set_position_text method.
367            """
368            # Implementation note: We do not really have to know which
369            # message was sent.  We can simply call the canvas'
370            # CurrentPosition method and if that returns a tuple, it was a
371            # VIEW_POSITION_CHANGED message and we have to display it.
372            # Otherwise it was a VIEW_POSITION_CHANGED message where the
373            # mouse has left the canvas or it was a message about a change
374            # to the map, in which case we check the projections.
375            #
376            # When changing this method, keep in mind that the
377            # VIEW_POSITION_CHANGED message are sent for every mouse move in
378            # the canvas window, that is they happen very often, so the path
379            # taken in that case has to be fast.
380            text = ""
381          pos = self.canvas.CurrentPosition()          pos = self.canvas.CurrentPosition()
382          if pos is not None:          if pos is not None:
383              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
384          else:          else:
385              text = ""              for layer in self.canvas.Map().Layers():
386                    bbox = layer.LatLongBoundingBox()
387                    if bbox:
388                        left, bottom, right, top = bbox
389                        if not (-180 <= left <= 180 and
390                                -180 <= right <= 180 and
391                                -90 <= top <= 90 and
392                                -90 <= bottom <= 90):
393                            text = _("Select layer '%s' and pick a projection "
394                                     "using Layer/Projection...") % layer.title
395                            break
396    
397          self.set_position_text(text)          self.set_position_text(text)
398    
399      def set_position_text(self, text):      def set_position_text(self, text):
400          """Set the statusbar text showing the current position.          """Set the statusbar text to that created by update_status_bar
401    
402          By default the text is shown in field 0 of the status bar.          By default the text is shown in field 0 of the status bar.
403          Override this method in derived classes to put it into a          Override this method in derived classes to put it into a
404          different field of the statusbar.          different field of the statusbar.
405    
406            For historical reasons this method is called set_position_text
407            because at first the text was always either the current position
408            or the empty string.  Now it can contain other messages as well.
409            The method will be renamed at one point.
410          """          """
411            # Note: If this method is renamed we should perhaps think about
412            # some backwards compatibility measures for projects like
413            # GREAT-ER which override this method.
414          self.SetStatusText(text)          self.SetStatusText(text)
415    
416        def OpenOrRaiseDialog(self, name, dialog_class, *args, **kw):
417            """
418            Open or raise a dialog.
419    
420            If a dialog with the denoted name does already exist it is
421            raised.  Otherwise a new dialog, an instance of dialog_class,
422            is created, inserted into the main list and displayed.
423            """
424            dialog = self.get_open_dialog(name)
425    
426            if dialog is None:
427                dialog = dialog_class(self, name, *args, **kw)
428                self.add_dialog(name, dialog)
429                dialog.Show(True)
430            else:
431                dialog.Raise()
432                              
433      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
434          """If the current session has been modified, ask the user          """If the current session has been modified, ask the user
435          whether to save it and do so if requested. Return the outcome of          whether to save it and do so if requested. Return the outcome of
# Line 364  class MainWindow(DockFrame): Line 453  class MainWindow(DockFrame):
453              result = wxID_NO              result = wxID_NO
454          return result          return result
455    
     def prepare_new_session(self):  
         for d in self.dialogs.values():  
             if not isinstance(d, tree.SessionTreeView):  
                 d.Close()  
   
456      def NewSession(self):      def NewSession(self):
457          if self.save_modified_session() != wxID_CANCEL:          if self.save_modified_session() != wxID_CANCEL:
             self.prepare_new_session()  
458              self.application.SetSession(create_empty_session())              self.application.SetSession(create_empty_session())
459    
460      def OpenSession(self):      def OpenSession(self):
461          if self.save_modified_session() != wxID_CANCEL:          if self.save_modified_session() != wxID_CANCEL:
462              dlg = wxFileDialog(self, _("Open Session"), ".", "",              dlg = wxFileDialog(self, _("Open Session"),
463                                   self.application.Path("data"), "",
464                                 "Thuban Session File (*.thuban)|*.thuban",                                 "Thuban Session File (*.thuban)|*.thuban",
465                                 wxOPEN)                                 wxOPEN)
466              if dlg.ShowModal() == wxID_OK:              if dlg.ShowModal() == wxID_OK:
467                  self.prepare_new_session()                  self.application.OpenSession(dlg.GetPath(),
468                  self.application.OpenSession(dlg.GetPath())                                               self.run_db_param_dialog)
469                    self.application.SetPath("data", dlg.GetPath())
470              dlg.Destroy()              dlg.Destroy()
471    
472        def run_db_param_dialog(self, parameters, message):
473            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
474                           message)
475            return dlg.RunDialog()
476    
477      def SaveSession(self):      def SaveSession(self):
478          if self.application.session.filename == None:          if self.application.session.filename == None:
479              self.SaveSessionAs()              self.SaveSessionAs()
# Line 391  class MainWindow(DockFrame): Line 481  class MainWindow(DockFrame):
481              self.application.SaveSession()              self.application.SaveSession()
482    
483      def SaveSessionAs(self):      def SaveSessionAs(self):
484          dlg = wxFileDialog(self, _("Save Session As"), ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
485                               self.application.Path("data"), "",
486                             "Thuban Session File (*.thuban)|*.thuban",                             "Thuban Session File (*.thuban)|*.thuban",
487                             wxSAVE|wxOVERWRITE_PROMPT)                             wxSAVE|wxOVERWRITE_PROMPT)
488          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
489              self.application.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
490              self.application.SaveSession()              self.application.SaveSession()
491                self.application.SetPath("data",dlg.GetPath())
492          dlg.Destroy()          dlg.Destroy()
493    
494      def Exit(self):      def Exit(self):
# Line 410  class MainWindow(DockFrame): Line 502  class MainWindow(DockFrame):
502              # FIXME: it would be better to tie the unsubscription to              # FIXME: it would be better to tie the unsubscription to
503              # wx's destroy event, but that isn't implemented for wxGTK              # wx's destroy event, but that isn't implemented for wxGTK
504              # yet.              # yet.
505              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)              for channel in self.update_status_bar_messages:
506                    self.canvas.Unsubscribe(channel, self.update_status_bar)
507    
508              DockFrame.OnClose(self, event)              DockFrame.OnClose(self, event)
509              for dlg in self.dialogs.values():              for dlg in self.dialogs.values():
510                  dlg.Destroy()                  dlg.Destroy()
# Line 419  class MainWindow(DockFrame): Line 513  class MainWindow(DockFrame):
513    
514      def SetMap(self, map):      def SetMap(self, map):
515          self.canvas.SetMap(map)          self.canvas.SetMap(map)
516          self.__SetTitle(map.Title())          self.update_title()
517    
518          dialog = self.FindRegisteredDock("legend")          dialog = self.FindRegisteredDock("legend")
519          if dialog is not None:          if dialog is not None:
# Line 450  class MainWindow(DockFrame): Line 544  class MainWindow(DockFrame):
544          dlg.ShowModal()          dlg.ShowModal()
545          dlg.Destroy()          dlg.Destroy()
546    
547        def DatabaseManagement(self):
548            name = "dbmanagement"
549            dialog = self.get_open_dialog(name)
550            if dialog is None:
551                map = self.canvas.Map()
552                dialog = DBFrame(self, name, self.application.Session())
553                self.add_dialog(name, dialog)
554                dialog.Show()
555            dialog.Raise()
556    
557      def AddLayer(self):      def AddLayer(self):
558          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
559                             wxOPEN)                             self.application.Path("data"), "",
560                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
561                               _("All Files (*.*)") + "|*.*",
562                               wxOPEN | wxMULTIPLE)
563          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
564              filename = dlg.GetPath()              filenames = dlg.GetPaths()
565              title = os.path.splitext(os.path.basename(filename))[0]              for filename in filenames:
566              map = self.canvas.Map()                  title = os.path.splitext(os.path.basename(filename))[0]
567              has_layers = map.HasLayers()                  map = self.canvas.Map()
568              try:                  has_layers = map.HasLayers()
569                  store = self.application.Session().OpenShapefile(filename)                  try:
570              except IOError:                      store = self.application.Session().OpenShapefile(filename)
571                  # the layer couldn't be opened                  except IOError:
572                  self.RunMessageBox(_("Add Layer"),                      # the layer couldn't be opened
573                                     _("Can't open the file '%s'.") % filename)                      self.RunMessageBox(_("Add Layer"),
574              else:                                         _("Can't open the file '%s'.")%filename)
575                  layer = Layer(title, store)                  else:
576                  map.AddLayer(layer)                      layer = Layer(title, store)
577                  if not has_layers:                      map.AddLayer(layer)
578                      # if we're adding a layer to an empty map, fit the                      if not has_layers:
579                      # new map to the window                          # if we're adding a layer to an empty map, fit the
580                      self.canvas.FitMapToWindow()                          # new map to the window
581                            self.canvas.FitMapToWindow()
582                        self.application.SetPath("data",filename)
583          dlg.Destroy()          dlg.Destroy()
584    
585      def AddRasterLayer(self):      def AddRasterLayer(self):
586          dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select an image file"),
587                               self.application.Path("data"), "", "*.*",
588                             wxOPEN)                             wxOPEN)
589          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
590              filename = dlg.GetPath()              filename = dlg.GetPath()
# Line 493  class MainWindow(DockFrame): Line 603  class MainWindow(DockFrame):
603                      # if we're adding a layer to an empty map, fit the                      # if we're adding a layer to an empty map, fit the
604                      # new map to the window                      # new map to the window
605                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
606                    self.application.SetPath("data", filename)
607            dlg.Destroy()
608    
609        def AddDBLayer(self):
610            """Add a layer read from a database"""
611            session = self.application.Session()
612            dlg = ChooseDBTableDialog(self, self.application.Session())
613    
614            if dlg.ShowModal() == wxID_OK:
615                dbconn, dbtable, id_column, geo_column = dlg.GetTable()
616                try:
617                    title = str(dbtable)
618    
619                    # Chose the correct Interface for the database type
620                    store = session.OpenDBShapeStore(dbconn, dbtable,
621                                                     id_column = id_column,
622                                                     geometry_column = geo_column)
623                    layer = Layer(title, store)
624                except:
625                    # Some error occured while initializing the layer
626                    self.RunMessageBox(_("Add Layer from database"),
627                                       _("Can't open the database table '%s'")
628                                       % dbtable)
629                    return
630    
631                map = self.canvas.Map()
632    
633                has_layers = map.HasLayers()
634                map.AddLayer(layer)
635                if not has_layers:
636                    self.canvas.FitMapToWindow()
637    
638          dlg.Destroy()          dlg.Destroy()
639    
640      def RemoveLayer(self):      def RemoveLayer(self):
# Line 513  class MainWindow(DockFrame): Line 655  class MainWindow(DockFrame):
655              return self.canvas.Map().CanRemoveLayer(layer)              return self.canvas.Map().CanRemoveLayer(layer)
656          return False          return False
657    
658        def LayerToTop(self):
659            layer = self.current_layer()
660            if layer is not None:
661                self.canvas.Map().MoveLayerToTop(layer)
662    
663      def RaiseLayer(self):      def RaiseLayer(self):
664          layer = self.current_layer()          layer = self.current_layer()
665          if layer is not None:          if layer is not None:
# Line 523  class MainWindow(DockFrame): Line 670  class MainWindow(DockFrame):
670          if layer is not None:          if layer is not None:
671              self.canvas.Map().LowerLayer(layer)              self.canvas.Map().LowerLayer(layer)
672    
673        def LayerToBottom(self):
674            layer = self.current_layer()
675            if layer is not None:
676                self.canvas.Map().MoveLayerToBottom(layer)
677    
678      def current_layer(self):      def current_layer(self):
679          """Return the currently selected layer.          """Return the currently selected layer.
680    
# Line 534  class MainWindow(DockFrame): Line 686  class MainWindow(DockFrame):
686          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
687          return self.canvas.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
688    
689        def has_selected_shape_layer(self):
690            """Return true if a shape layer is currently selected"""
691            return isinstance(self.current_layer(), Layer)
692    
693      def has_selected_shapes(self):      def has_selected_shapes(self):
694          """Return true if a shape is currently selected"""          """Return true if a shape is currently selected"""
695          return self.canvas.HasSelectedShapes()          return self.canvas.HasSelectedShapes()
# Line 541  class MainWindow(DockFrame): Line 697  class MainWindow(DockFrame):
697      def HideLayer(self):      def HideLayer(self):
698          layer = self.current_layer()          layer = self.current_layer()
699          if layer is not None:          if layer is not None:
700              layer.SetVisible(0)              layer.SetVisible(False)
701    
702      def ShowLayer(self):      def ShowLayer(self):
703          layer = self.current_layer()          layer = self.current_layer()
704          if layer is not None:          if layer is not None:
705              layer.SetVisible(1)              layer.SetVisible(True)
706    
707        def ToggleLayerVisibility(self):
708            layer = self.current_layer()
709            layer.SetVisible(not layer.Visible())
710    
711      def DuplicateLayer(self):      def DuplicateLayer(self):
712          """Ceate a new layer above the selected layer with the same shapestore          """Ceate a new layer above the selected layer with the same shapestore
# Line 557  class MainWindow(DockFrame): Line 717  class MainWindow(DockFrame):
717                                layer.ShapeStore(),                                layer.ShapeStore(),
718                                projection = layer.GetProjection())                                projection = layer.GetProjection())
719              new_classification = copy.deepcopy(layer.GetClassification())              new_classification = copy.deepcopy(layer.GetClassification())
720                new_layer.SetClassificationColumn(
721                        layer.GetClassificationColumn())
722              new_layer.SetClassification(new_classification)              new_layer.SetClassification(new_classification)
723              self.Map().AddLayer(new_layer)              self.Map().AddLayer(new_layer)
724    
# Line 566  class MainWindow(DockFrame): Line 728  class MainWindow(DockFrame):
728          return layer is not None and hasattr(layer, "ShapeStore")          return layer is not None and hasattr(layer, "ShapeStore")
729    
730      def LayerShowTable(self):      def LayerShowTable(self):
731            """
732            Present a TableView Window for the current layer.
733            In case the window is already open, bring it to the front.
734            In case, there is no active layer, do nothing.
735            In case, the layer has no ShapeStore, do nothing.
736            """
737          layer = self.current_layer()          layer = self.current_layer()
738          if layer is not None:          if layer is not None:
739                if not hasattr(layer, "ShapeStore"):
740                    return
741              table = layer.ShapeStore().Table()              table = layer.ShapeStore().Table()
742              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
743              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
# Line 578  class MainWindow(DockFrame): Line 748  class MainWindow(DockFrame):
748                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
749                  dialog.Show(True)                  dialog.Show(True)
750              else:              else:
751                  # FIXME: bring dialog to front here                  dialog.Raise()
                 pass  
752    
753      def MapProjection(self):      def MapProjection(self):
754    
# Line 621  class MainWindow(DockFrame): Line 790  class MainWindow(DockFrame):
790          self.OpenLayerProperties(layer)          self.OpenLayerProperties(layer)
791    
792      def OpenLayerProperties(self, layer, group = None):      def OpenLayerProperties(self, layer, group = None):
793          name = "layer_properties" + str(id(layer))          """
794          dialog = self.get_open_dialog(name)          Open or raise the properties dialog.
795    
796          if dialog is None:          This method opens or raises the properties dialog for the
797              dialog = Classifier(self, name, self.Map(), layer, group)          currently selected layer if one is defined for this layer
798              self.add_dialog(name, dialog)          type.
799              dialog.Show()          """
800          dialog.Raise()          dialog_class = layer_properties_dialogs.get(layer)
801    
802            if dialog_class is not None:
803                name = "layer_properties" + str(id(layer))
804                self.OpenOrRaiseDialog(name, dialog_class, layer, group = group)
805    
806      def LayerJoinTable(self):      def LayerJoinTable(self):
807          layer = self.canvas.SelectedLayer()          layer = self.canvas.SelectedLayer()
# Line 663  class MainWindow(DockFrame): Line 836  class MainWindow(DockFrame):
836          else:          else:
837              dialog.Show(not dialog.IsShown())              dialog.Show(not dialog.IsShown())
838    
         self.canvas.FitMapToWindow()  
   
839      def LegendShown(self):      def LegendShown(self):
840          """Return true iff the legend is currently open"""          """Return true iff the legend is currently open"""
841          dialog = self.FindRegisteredDock("legend")          dialog = self.FindRegisteredDock("legend")
842          return dialog is not None and dialog.IsShown()          return dialog is not None and dialog.IsShown()
843    
844      def TableOpen(self):      def TableOpen(self):
845          dlg = wxFileDialog(self, _("Open Table"), ".", "",          dlg = wxFileDialog(self, _("Open Table"),
846                               self.application.Path("data"), "",
847                             _("DBF Files (*.dbf)") + "|*.dbf|" +                             _("DBF Files (*.dbf)") + "|*.dbf|" +
848                             #_("CSV Files (*.csv)") + "|*.csv|" +                             #_("CSV Files (*.csv)") + "|*.csv|" +
849                             _("All Files (*.*)") + "|*.*",                             _("All Files (*.*)") + "|*.*",
# Line 687  class MainWindow(DockFrame): Line 859  class MainWindow(DockFrame):
859                                     _("Can't open the file '%s'.") % filename)                                     _("Can't open the file '%s'.") % filename)
860              else:              else:
861                  self.ShowTableView(table)                  self.ShowTableView(table)
862                    self.application.SetPath("data",filename)
863    
864      def TableClose(self):      def TableClose(self):
865          tables = self.application.session.UnreferencedTables()          tables = self.application.session.UnreferencedTables()
# Line 740  class MainWindow(DockFrame): Line 913  class MainWindow(DockFrame):
913                                                 table)                                                 table)
914              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
915              dialog.Show(True)              dialog.Show(True)
916          # FIXME: else bring dialog to front          dialog.Raise()
917    
918      def TableRename(self):      def TableRename(self):
919          """Let the user rename a table"""          """Let the user rename a table"""
# Line 763  class MainWindow(DockFrame): Line 936  class MainWindow(DockFrame):
936    
937          # Second, let the user rename the layers          # Second, let the user rename the layers
938          for table in to_rename:          for table in to_rename:
939              dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",              dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
940                                      table.Title())                                      table.Title())
941              try:              try:
942                  if dlg.ShowModal() == wxID_OK:                  if dlg.ShowModal() == wxID_OK:
# Line 812  class MainWindow(DockFrame): Line 985  class MainWindow(DockFrame):
985          self.canvas.Print()          self.canvas.Print()
986    
987      def RenameMap(self):      def RenameMap(self):
988          dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",          dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
989                                  self.Map().Title())                                  self.Map().Title())
990          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
991              title = dlg.GetValue()              title = dlg.GetValue()
992              if title != "":              if title != "":
993                  self.Map().SetTitle(title)                  self.Map().SetTitle(title)
                 self.__SetTitle(title)  
994    
995          dlg.Destroy()          dlg.Destroy()
996    
# Line 826  class MainWindow(DockFrame): Line 998  class MainWindow(DockFrame):
998          """Let the user rename the currently selected layer"""          """Let the user rename the currently selected layer"""
999          layer = self.current_layer()          layer = self.current_layer()
1000          if layer is not None:          if layer is not None:
1001              dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",              dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
1002                                      layer.Title())                                      layer.Title())
1003              try:              try:
1004                  if dlg.ShowModal() == wxID_OK:                  if dlg.ShowModal() == wxID_OK:
# Line 860  class MainWindow(DockFrame): Line 1032  class MainWindow(DockFrame):
1032                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
1033                  pass                  pass
1034    
1035      def __SetTitle(self, title):      def title_changed(self, map):
1036          self.SetTitle("Thuban - " + title)          """Subscribed to the canvas' TITLE_CHANGED messages"""
1037            self.update_title()
1038    
1039        def update_title(self):
1040            """Update the window's title according to it's current state.
1041    
1042            In this default implementation the title is 'Thuban - ' followed
1043            by the map's title or simply 'Thuban' if there is not map.
1044            Derived classes should override this method to get different
1045            titles.
1046    
1047            This method is called automatically by other methods when the
1048            title may have to change. For the methods implemented in this
1049            class this usually only means that a different map has been set
1050            or the current map's title has changed.
1051            """
1052            map = self.Map()
1053            if map is not None:
1054                title = _("Thuban - %s") % (map.Title(),)
1055            else:
1056                title = _("Thuban")
1057            self.SetTitle(title)
1058    
1059    
1060  #  #
1061  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 903  def _has_selected_layer(context): Line 1097  def _has_selected_layer(context):
1097      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
1098      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
1099    
1100    def _has_selected_layer_visible(context):
1101        """Return true if a layer is selected in the context which is
1102        visible."""
1103        if context.mainwindow.has_selected_layer():
1104            layer = context.mainwindow.current_layer()
1105            if layer.Visible(): return True
1106        return False
1107    
1108    def _has_selected_shape_layer(context):
1109        """Return true if a shape layer is selected in the context"""
1110        return context.mainwindow.has_selected_shape_layer()
1111    
1112  def _has_selected_shapes(context):  def _has_selected_shapes(context):
1113      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
1114      return context.mainwindow.has_selected_shapes()      return context.mainwindow.has_selected_shapes()
# Line 922  def _has_visible_map(context): Line 1128  def _has_visible_map(context):
1128      if map is not None:      if map is not None:
1129          for layer in map.Layers():          for layer in map.Layers():
1130              if layer.Visible():              if layer.Visible():
1131                  return 1                  return True
1132      return 0      return False
1133    
1134  def _has_legend_shown(context):  def _has_legend_shown(context):
1135      """Return true if the legend window is shown"""      """Return true if the legend window is shown"""
# Line 933  def _has_gdal_support(context): Line 1139  def _has_gdal_support(context):
1139      """Return True if the GDAL is available"""      """Return True if the GDAL is available"""
1140      return Thuban.Model.resource.has_gdal_support()      return Thuban.Model.resource.has_gdal_support()
1141    
1142    def _has_dbconnections(context):
1143        """Return whether the the session has database connections"""
1144        return context.session.HasDBConnections()
1145    
1146    def _has_postgis_support(context):
1147        return has_postgis_support()
1148    
1149    
1150  # File menu  # File menu
1151  _method_command("new_session", _("&New Session"), "NewSession",  _method_command("new_session", _("&New Session"), "NewSession",
1152                  helptext = _("Start a new session"))                  helptext = _("Start a new session"))
# Line 948  _method_command("toggle_session_tree", _ Line 1162  _method_command("toggle_session_tree", _
1162  _method_command("toggle_legend", _("Legend"), "ToggleLegend",  _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1163                  checked = _has_legend_shown,                  checked = _has_legend_shown,
1164                  helptext = _("Toggle Legend on/off"))                  helptext = _("Toggle Legend on/off"))
1165    _method_command("database_management", _("&Database Connections..."),
1166                    "DatabaseManagement",
1167                    sensitive = _has_postgis_support)
1168  _method_command("exit", _("E&xit"), "Exit",  _method_command("exit", _("E&xit"), "Exit",
1169                  helptext = _("Finish working with Thuban"))                  helptext = _("Finish working with Thuban"))
1170    
# Line 997  _method_command("layer_add", _("&Add Lay Line 1214  _method_command("layer_add", _("&Add Lay
1214  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1215                  helptext = _("Add a new image layer to the map"),                  helptext = _("Add a new image layer to the map"),
1216                  sensitive = _has_gdal_support)                  sensitive = _has_gdal_support)
1217    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1218                    helptext = _("Add a new database layer to active map"),
1219                    sensitive = _has_dbconnections)
1220  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1221                  helptext = _("Remove selected layer"),                  helptext = _("Remove selected layer"),
1222                  sensitive = _can_remove_layer)                  sensitive = _can_remove_layer)
# Line 1025  _method_command("layer_hide", _("&Hide") Line 1245  _method_command("layer_hide", _("&Hide")
1245                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1246  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1247                  helptext = _("Show the selected layer's table"),                  helptext = _("Show the selected layer's table"),
1248                  sensitive = _has_selected_layer)                  sensitive = _has_selected_shape_layer)
1249  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1250                  sensitive = _has_selected_layer,                  sensitive = _has_selected_layer,
1251                  helptext = _("Edit the properties of the selected layer"))                  helptext = _("Edit the properties of the selected layer"))
1252  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1253                  sensitive = _has_selected_layer,                  sensitive = _has_selected_shape_layer,
1254                  helptext = _("Join and attach a table to the selected layer"))                  helptext = _("Join and attach a table to the selected layer"))
1255    
1256    # further layer methods:
1257    _method_command("layer_to_top", _("&Top"), "LayerToTop",
1258                    helptext = _("Put selected layer to the top"),
1259                    sensitive = _has_selected_layer)
1260    _method_command("layer_to_bottom", _("&Bottom"), "LayerToBottom",
1261                    helptext = _("Put selected layer to the bottom"),
1262                    sensitive = _has_selected_layer)
1263    _method_command("layer_visibility", _("&Visible"), "ToggleLayerVisibility",
1264                    checked = _has_selected_layer_visible,
1265                    helptext = _("Toggle visibility of selected layer"),
1266                    sensitive = _has_selected_layer)
1267    
1268  def _can_unjoin(context):  def _can_unjoin(context):
1269      """Return whether the Layer/Unjoin command can be executed.      """Return whether the Layer/Unjoin command can be executed.
1270    
# Line 1072  _method_command("table_join", _("&Join.. Line 1304  _method_command("table_join", _("&Join..
1304                  helptext = _("Join two tables creating a new one"))                  helptext = _("Join two tables creating a new one"))
1305    
1306  #  Export only under Windows ...  #  Export only under Windows ...
1307  map_menu = ["layer_add", "rasterlayer_add", "layer_remove",  map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1308                          None,                          None,
1309                          "map_rename",                          "map_rename",
1310                          "map_projection",                          "map_projection",
1311                          None,                          None,
1312                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1313                          "map_pan_tool",                          "map_pan_tool",
1314                          "map_full_extent",                          "map_full_extent",
1315                          "layer_full_extent",                          "layer_full_extent",
1316                          "selected_full_extent",                          "selected_full_extent",
1317                          None,                          None,
# Line 1096  main_menu = Menu("<main>", "<main>", Line 1328  main_menu = Menu("<main>", "<main>",
1328                   [Menu("file", _("&File"),                   [Menu("file", _("&File"),
1329                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
1330                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
1331                            "database_management", None,
1332                          "toggle_session_tree", None,                          "toggle_session_tree", None,
1333                          "exit"]),                          "exit"]),
1334                    Menu("map", _("&Map"), map_menu),                    Menu("map", _("&Map"), map_menu),
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