/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 653 by jonathan, Fri Apr 11 14:28:29 2003 UTC revision 2364 by joey, Fri Oct 1 18:18:49 2004 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002, 2003 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003, 2004 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]>
5    # Frank Koormann <[email protected]>
6  #  #
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 11  The main window Line 12  The main window
12  """  """
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    # $Source$
16  __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"  # $Id$
 #__BuildDate__ = "$Date$"  
17    
18  import os  import os
19    import copy
20    
21  from wxPython.wx import *  from wxPython.wx import *
22    
23  import Thuban  import Thuban
24    
25  from Thuban import _  from Thuban import _
26    from Thuban.Model.messages import TITLE_CHANGED
27  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
28  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
29  from Thuban.Model.color import Color  from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
30  from Thuban.Model.proj import Projection  # XXX: replace this by
31    # from wxPython.lib.dialogs import wxMultipleChoiceDialog
32    # when Thuban does not support wxPython 2.4.0 any more.
33    from Thuban.UI.multiplechoicedialog import wxMultipleChoiceDialog
34    
35  import view  import view
36  import tree  import tree
 import proj4dialog  
37  import tableview, identifyview  import tableview, identifyview
38  from Thuban.UI.classifier import Classifier  from Thuban.UI.classifier import Classifier
39  import legend  import legend
# Line 36  from menu import Menu Line 41  from menu import Menu
41    
42  from context import Context  from context import Context
43  from command import registry, Command, ToolCommand  from command import registry, Command, ToolCommand
44  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, DOCKABLE_DOCKED, DOCKABLE_UNDOCKED, DOCKABLE_CLOSED  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, \
45         MAP_REPLACED
46  from Thuban.UI.dock import DockableWindow, DockFrame, DockPanel  from about import About
47    
48    from Thuban.UI.dock import DockFrame
49    from Thuban.UI.join import JoinDialog
50    from Thuban.UI.dbdialog import DBFrame, DBDialog, ChooseDBTableDialog
51  import resource  import resource
52    import Thuban.Model.resource
53    
54    import projdialog
 # the directory where the toolbar icons are stored  
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
   
 ID_WINDOW_LEGEND = 4001  
 ID_WINDOW_CANVAS = 4002  
55    
56    
57  class MainWindow(DockFrame):  class MainWindow(DockFrame):
# Line 59  class MainWindow(DockFrame): Line 62  class MainWindow(DockFrame):
62      # actually come from. This delegation is implemented in the      # actually come from. This delegation is implemented in the
63      # Subscribe and unsubscribed methods      # Subscribe and unsubscribed methods
64      delegated_messages = {LAYER_SELECTED: "canvas",      delegated_messages = {LAYER_SELECTED: "canvas",
65                            SHAPES_SELECTED: "canvas"}                            SHAPES_SELECTED: "canvas",
66                              MAP_REPLACED: "canvas"}
67    
68      # Methods delegated to some instance variables. The delegation is      # Methods delegated to some instance variables. The delegation is
69      # implemented in the __getattr__ method.      # implemented in the __getattr__ method.
70      delegated_methods = {"SelectLayer": "canvas",      delegated_methods = {"SelectLayer": "canvas",
71                           "SelectShapes": "canvas",                           "SelectShapes": "canvas",
72                             "SelectedLayer": "canvas",
73                             "SelectedShapes": "canvas",
74                           }                           }
75    
76      def __init__(self, parent, ID, title, application, interactor,      def __init__(self, parent, ID, title, application, interactor,
# Line 96  class MainWindow(DockFrame): Line 102  class MainWindow(DockFrame):
102          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
103          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)          canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
104          self.canvas = canvas          self.canvas = canvas
105            self.canvas.Subscribe(TITLE_CHANGED, self.title_changed)
106    
107          self.SetMainWindow(self.canvas)          self.SetMainWindow(self.canvas)
108    
# Line 103  class MainWindow(DockFrame): Line 110  class MainWindow(DockFrame):
110    
111          self.init_dialogs()          self.init_dialogs()
112    
113          EVT_CLOSE(self, self._OnClose)          self.ShowLegend()
114    
115            EVT_CLOSE(self, self.OnClose)
116    
117      def Subscribe(self, channel, *args):      def Subscribe(self, channel, *args):
118          """Subscribe a function to a message channel.          """Subscribe a function to a message channel.
# Line 125  class MainWindow(DockFrame): Line 134  class MainWindow(DockFrame):
134          """          """
135          if channel in self.delegated_messages:          if channel in self.delegated_messages:
136              object = getattr(self, self.delegated_messages[channel])              object = getattr(self, self.delegated_messages[channel])
137              object.Unsubscribe(channel, *args)              try:
138                    object.Unsubscribe(channel, *args)
139                except wxPyDeadObjectError:
140                    # The object was a wxObject and has already been
141                    # destroyed. Hopefully it has unsubscribed all its
142                    # subscribers already so that it's OK if we do nothing
143                    # here
144                    pass
145    
146      def __getattr__(self, attr):      def __getattr__(self, attr):
147          """If attr is one of the delegated methods return that method          """If attr is one of the delegated methods return that method
# Line 333  class MainWindow(DockFrame): Line 349  class MainWindow(DockFrame):
349          """          """
350          self.SetStatusText(text)          self.SetStatusText(text)
351    
352        def OpenOrRaiseDialog(self, name, dialog_class, *args, **kw):
353            """
354            Open or raise a dialog.
355    
356            If a dialog with the denoted name does already exist it is
357            raised.  Otherwise a new dialog, an instance of dialog_class,
358            is created, inserted into the main list and displayed.
359            """
360            dialog = self.get_open_dialog(name)
361    
362            if dialog is None:
363                dialog = dialog_class(self, name, *args, **kw)
364                self.add_dialog(name, dialog)
365                dialog.Show(True)
366            else:
367                dialog.Raise()
368                              
369      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
370          """If the current session has been modified, ask the user          """If the current session has been modified, ask the user
371          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 356  class MainWindow(DockFrame): Line 389  class MainWindow(DockFrame):
389              result = wxID_NO              result = wxID_NO
390          return result          return result
391    
     def prepare_new_session(self):  
         for d in self.dialogs.values():  
             if not isinstance(d, tree.SessionTreeView):  
                 d.Close()  
   
392      def NewSession(self):      def NewSession(self):
393          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
394          self.prepare_new_session()              self.application.SetSession(create_empty_session())
         self.application.SetSession(create_empty_session())  
395    
396      def OpenSession(self):      def OpenSession(self):
397          self.save_modified_session()          if self.save_modified_session() != wxID_CANCEL:
398          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", wxOPEN)              dlg = wxFileDialog(self, _("Open Session"),
399          if dlg.ShowModal() == wxID_OK:                                 self.application.Path("data"), "",
400              self.prepare_new_session()                                 "Thuban Session File (*.thuban)|*.thuban",
401              self.application.OpenSession(dlg.GetPath())                                 wxOPEN)
402          dlg.Destroy()              if dlg.ShowModal() == wxID_OK:
403                    self.application.OpenSession(dlg.GetPath(),
404                                                 self.run_db_param_dialog)
405                    self.application.SetPath("data", dlg.GetPath())
406                dlg.Destroy()
407    
408        def run_db_param_dialog(self, parameters, message):
409            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
410                           message)
411            return dlg.RunDialog()
412    
413      def SaveSession(self):      def SaveSession(self):
414          if self.application.session.filename == None:          if self.application.session.filename == None:
# Line 381  class MainWindow(DockFrame): Line 417  class MainWindow(DockFrame):
417              self.application.SaveSession()              self.application.SaveSession()
418    
419      def SaveSessionAs(self):      def SaveSessionAs(self):
420          dlg = wxFileDialog(self, _("Save Session As"), ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
421                             "*.thuban", wxOPEN)                             self.application.Path("data"), "",
422                               "Thuban Session File (*.thuban)|*.thuban",
423                               wxSAVE|wxOVERWRITE_PROMPT)
424          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
425              self.application.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
426              self.application.SaveSession()              self.application.SaveSession()
427                self.application.SetPath("data",dlg.GetPath())
428          dlg.Destroy()          dlg.Destroy()
429    
430      def Exit(self):      def Exit(self):
431          self.Close(False)          self.Close(False)
432    
433      def _OnClose(self, event):      def OnClose(self, event):
434          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
435          if result == wxID_CANCEL:          if result == wxID_CANCEL:
436              event.Veto()              event.Veto()
# Line 400  class MainWindow(DockFrame): Line 439  class MainWindow(DockFrame):
439              # wx's destroy event, but that isn't implemented for wxGTK              # wx's destroy event, but that isn't implemented for wxGTK
440              # yet.              # yet.
441              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)              self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
442              DockFrame._OnClose(self, event)              DockFrame.OnClose(self, event)
443                for dlg in self.dialogs.values():
444                    dlg.Destroy()
445                self.canvas.Destroy()
446              self.Destroy()              self.Destroy()
447    
448      def SetMap(self, map):      def SetMap(self, map):
449          self.canvas.SetMap(map)          self.canvas.SetMap(map)
450          self.__SetTitle(map.Title())          self.update_title()
451          #self.legendPanel.SetMap(map)  
452            dialog = self.FindRegisteredDock("legend")
453            if dialog is not None:
454                dialog.GetPanel().SetMap(self.Map())
455    
456      def Map(self):      def Map(self):
457          """Return the map displayed by this mainwindow"""          """Return the map displayed by this mainwindow"""
458    
         # sanity check  
         #assert(self.canvas.Map() is self.legendPanel.GetMap())  
   
459          return self.canvas.Map()          return self.canvas.Map()
460    
461      def ToggleSessionTree(self):      def ToggleSessionTree(self):
# Line 432  class MainWindow(DockFrame): Line 474  class MainWindow(DockFrame):
474          return self.get_open_dialog("session_tree") is not None          return self.get_open_dialog("session_tree") is not None
475    
476      def About(self):      def About(self):
477          self.RunMessageBox(_("About"),          dlg = About(self)
478                             _("Thuban v%s\n"          dlg.ShowModal()
479                              #"Build Date: %s\n"          dlg.Destroy()
480                              "\n"  
481                              "Thuban is a program for\n"      def DatabaseManagement(self):
482                              "exploring geographic data.\n"          name = "dbmanagement"
483                              "Copyright (C) 2001-2003 Intevation GmbH.\n"          dialog = self.get_open_dialog(name)
484                              "Thuban is licensed under the GNU GPL"          if dialog is None:
485                             % __ThubanVersion__), #__BuildDate__)),              map = self.canvas.Map()
486                             wxOK | wxICON_INFORMATION)              dialog = DBFrame(self, name, self.application.Session())
487                self.add_dialog(name, dialog)
488                dialog.Show()
489            dialog.Raise()
490    
491      def AddLayer(self):      def AddLayer(self):
492          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
493                               self.application.Path("data"), "",
494                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
495                               _("All Files (*.*)") + "|*.*",
496                               wxOPEN | wxMULTIPLE)
497            if dlg.ShowModal() == wxID_OK:
498                filenames = dlg.GetPaths()
499                for filename in filenames:
500                    title = os.path.splitext(os.path.basename(filename))[0]
501                    map = self.canvas.Map()
502                    has_layers = map.HasLayers()
503                    try:
504                        store = self.application.Session().OpenShapefile(filename)
505                    except IOError:
506                        # the layer couldn't be opened
507                        self.RunMessageBox(_("Add Layer"),
508                                           _("Can't open the file '%s'.")%filename)
509                    else:
510                        layer = Layer(title, store)
511                        map.AddLayer(layer)
512                        if not has_layers:
513                            # if we're adding a layer to an empty map, fit the
514                            # new map to the window
515                            self.canvas.FitMapToWindow()
516                        self.application.SetPath("data",filename)
517            dlg.Destroy()
518    
519        def AddRasterLayer(self):
520            dlg = wxFileDialog(self, _("Select an image file"),
521                               self.application.Path("data"), "", "*.*",
522                             wxOPEN)                             wxOPEN)
523          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
524              filename = dlg.GetPath()              filename = dlg.GetPath()
525              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
             layer = Layer(title, filename)  
526              map = self.canvas.Map()              map = self.canvas.Map()
527              has_layers = map.HasLayers()              has_layers = map.HasLayers()
528              try:              try:
529                  map.AddLayer(layer)                  layer = RasterLayer(title, filename)
530              except IOError:              except IOError:
531                  # the layer couldn't be opened                  # the layer couldn't be opened
532                  self.RunMessageBox(_("Add Layer"),                  self.RunMessageBox(_("Add Image Layer"),
533                                     _("Can't open the file '%s'.") % filename)                                     _("Can't open the file '%s'.") % filename)
534              else:              else:
535                    map.AddLayer(layer)
536                  if not has_layers:                  if not has_layers:
537                      # if we're adding a layer to an empty map, fit the                      # if we're adding a layer to an empty map, fit the
538                      # new map to the window                      # new map to the window
539                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
540                    self.application.SetPath("data", filename)
541            dlg.Destroy()
542    
543        def AddDBLayer(self):
544            """Add a layer read from a database"""
545            session = self.application.Session()
546            dlg = ChooseDBTableDialog(self, self.application.Session())
547    
548            if dlg.ShowModal() == wxID_OK:
549                dbconn, dbtable, id_column, geo_column = dlg.GetTable()
550                try:
551                    title = str(dbtable)
552    
553                    # Chose the correct Interface for the database type
554                    store = session.OpenDBShapeStore(dbconn, dbtable,
555                                                     id_column = id_column,
556                                                     geometry_column = geo_column)
557                    layer = Layer(title, store)
558                except:
559                    # Some error occured while initializing the layer
560                    self.RunMessageBox(_("Add Layer from database"),
561                                       _("Can't open the database table '%s'")
562                                       % dbtable)
563                    return
564    
565                map = self.canvas.Map()
566    
567                has_layers = map.HasLayers()
568                map.AddLayer(layer)
569                if not has_layers:
570                    self.canvas.FitMapToWindow()
571    
572          dlg.Destroy()          dlg.Destroy()
573    
574      def RemoveLayer(self):      def RemoveLayer(self):
# Line 483  class MainWindow(DockFrame): Line 589  class MainWindow(DockFrame):
589              return self.canvas.Map().CanRemoveLayer(layer)              return self.canvas.Map().CanRemoveLayer(layer)
590          return False          return False
591    
592        def LayerToTop(self):
593            layer = self.current_layer()
594            if layer is not None:
595                self.canvas.Map().MoveLayerToTop(layer)
596    
597      def RaiseLayer(self):      def RaiseLayer(self):
598          layer = self.current_layer()          layer = self.current_layer()
599          if layer is not None:          if layer is not None:
# Line 493  class MainWindow(DockFrame): Line 604  class MainWindow(DockFrame):
604          if layer is not None:          if layer is not None:
605              self.canvas.Map().LowerLayer(layer)              self.canvas.Map().LowerLayer(layer)
606    
607        def LayerToBottom(self):
608            layer = self.current_layer()
609            if layer is not None:
610                self.canvas.Map().MoveLayerToBottom(layer)
611    
612      def current_layer(self):      def current_layer(self):
613          """Return the currently selected layer.          """Return the currently selected layer.
614    
# Line 504  class MainWindow(DockFrame): Line 620  class MainWindow(DockFrame):
620          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
621          return self.canvas.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
622    
623      def choose_color(self):      def has_selected_shape_layer(self):
624          """Run the color selection dialog and return the selected color.          """Return true if a shape layer is currently selected"""
625            return isinstance(self.current_layer(), Layer)
626          If the user cancels, return None.  
627          """      def has_selected_shapes(self):
628          dlg = wxColourDialog(self)          """Return true if a shape is currently selected"""
629          color = None          return self.canvas.HasSelectedShapes()
         if dlg.ShowModal() == wxID_OK:  
             data = dlg.GetColourData()  
             wxc = data.GetColour()  
             color = Color(wxc.Red() / 255.0,  
                           wxc.Green() / 255.0,  
                           wxc.Blue() / 255.0)  
         dlg.Destroy()  
         return color  
630    
631      def HideLayer(self):      def HideLayer(self):
632          layer = self.current_layer()          layer = self.current_layer()
633          if layer is not None:          if layer is not None:
634              layer.SetVisible(0)              layer.SetVisible(False)
635            
636      def ShowLayer(self):      def ShowLayer(self):
637          layer = self.current_layer()          layer = self.current_layer()
638          if layer is not None:          if layer is not None:
639              layer.SetVisible(1)              layer.SetVisible(True)
640    
641        def ToggleLayerVisibility(self):
642            layer = self.current_layer()
643            layer.SetVisible(not layer.Visible())
644    
645        def DuplicateLayer(self):
646            """Ceate a new layer above the selected layer with the same shapestore
647            """
648            layer = self.current_layer()
649            if layer is not None and hasattr(layer, "ShapeStore"):
650                new_layer = Layer(_("Copy of `%s'") % layer.Title(),
651                                  layer.ShapeStore(),
652                                  projection = layer.GetProjection())
653                new_classification = copy.deepcopy(layer.GetClassification())
654                new_layer.SetClassification(new_classification)
655                self.Map().AddLayer(new_layer)
656    
657        def CanDuplicateLayer(self):
658            """Return whether the DuplicateLayer method can create a duplicate"""
659            layer = self.current_layer()
660            return layer is not None and hasattr(layer, "ShapeStore")
661    
662      def LayerShowTable(self):      def LayerShowTable(self):
663            """
664            Present a TableView Window for the current layer.
665            In case the window is already open, bring it to the front.
666            In case, there is no active layer, do nothing.
667            In case, the layer has no ShapeStore, do nothing.
668            """
669          layer = self.current_layer()          layer = self.current_layer()
670          if layer is not None:          if layer is not None:
671              table = layer.table              if not hasattr(layer, "ShapeStore"):
672                    return
673                table = layer.ShapeStore().Table()
674              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
675              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
676              if dialog is None:              if dialog is None:
677                  dialog = tableview.LayerTableFrame(self, name,                  dialog = tableview.LayerTableFrame(self, name,
678                                                 _("Table: %s") % layer.Title(),                                           _("Layer Table: %s") % layer.Title(),
679                                                     layer, table)                                           layer, table)
680                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
681                  dialog.Show(true)                  dialog.Show(True)
682              else:              else:
683                  # FIXME: bring dialog to front here                  dialog.Raise()
                 pass  
684    
685      def Projection(self):      def MapProjection(self):
686          map = self.canvas.Map()  
687          proj = map.projection          name = "map_projection"
688          if proj is None:          dialog = self.get_open_dialog(name)
689              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())  
690          else:          if dialog is None:
691              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              map = self.canvas.Map()
692                                                 map.BoundingBox())              dialog = projdialog.ProjFrame(self, name,
693          if proj4Dlg.ShowModal() == wxID_OK:                       _("Map Projection: %s") % map.Title(), map)
694              params = proj4Dlg.GetParams()              self.add_dialog(name, dialog)
695              if params is not None:              dialog.Show()
696                  proj = Projection(params)          dialog.Raise()
697              else:  
698                  proj = None      def LayerProjection(self):
699              map.SetProjection(proj)  
700          proj4Dlg.Destroy()          layer = self.current_layer()
701    
702            name = "layer_projection" + str(id(layer))
703            dialog = self.get_open_dialog(name)
704    
705            if dialog is None:
706                map = self.canvas.Map()
707                dialog = projdialog.ProjFrame(self, name,
708                         _("Layer Projection: %s") % layer.Title(), layer)
709                self.add_dialog(name, dialog)
710                dialog.Show()
711            dialog.Raise()
712    
713      def LayerEditProperties(self):      def LayerEditProperties(self):
714    
# Line 575  class MainWindow(DockFrame): Line 722  class MainWindow(DockFrame):
722          self.OpenLayerProperties(layer)          self.OpenLayerProperties(layer)
723    
724      def OpenLayerProperties(self, layer, group = None):      def OpenLayerProperties(self, layer, group = None):
725          name = "layer_properties" + str(id(layer))          """
726          dialog = self.get_open_dialog(name)          Open or raise the properties dialog.
727    
728          if dialog is None:          This method opens or raises the properties dialog for the
729              dialog = Classifier(self, name, layer, group)          currently selected layer if one is defined for this layer
730              self.add_dialog(name, dialog)          type.
731              dialog.Show()          """
732          dialog.Raise()          name = "layer_properties" + str(id(layer))
733            self.OpenOrRaiseDialog(name, Classifier, layer, group = group)
734            
735        def LayerJoinTable(self):
736            layer = self.canvas.SelectedLayer()
737            if layer is not None:
738                dlg = JoinDialog(self, _("Join Layer with Table"),
739                                 self.application.session,
740                                 layer = layer)
741                dlg.ShowModal()
742    
743        def LayerUnjoinTable(self):
744            layer = self.canvas.SelectedLayer()
745            if layer is not None:
746                orig_store = layer.ShapeStore().OrigShapeStore()
747                if orig_store:
748                    layer.SetShapeStore(orig_store)
749    
750      def ShowLegend(self):      def ShowLegend(self):
751          if not self.LegendShown():          if not self.LegendShown():
# Line 608  class MainWindow(DockFrame): Line 770  class MainWindow(DockFrame):
770          dialog = self.FindRegisteredDock("legend")          dialog = self.FindRegisteredDock("legend")
771          return dialog is not None and dialog.IsShown()          return dialog is not None and dialog.IsShown()
772    
773        def TableOpen(self):
774            dlg = wxFileDialog(self, _("Open Table"),
775                               self.application.Path("data"), "",
776                               _("DBF Files (*.dbf)") + "|*.dbf|" +
777                               #_("CSV Files (*.csv)") + "|*.csv|" +
778                               _("All Files (*.*)") + "|*.*",
779                               wxOPEN)
780            if dlg.ShowModal() == wxID_OK:
781                filename = dlg.GetPath()
782                dlg.Destroy()
783                try:
784                    table = self.application.session.OpenTableFile(filename)
785                except IOError:
786                    # the layer couldn't be opened
787                    self.RunMessageBox(_("Open Table"),
788                                       _("Can't open the file '%s'.") % filename)
789                else:
790                    self.ShowTableView(table)
791                    self.application.SetPath("data",filename)
792    
793        def TableClose(self):
794            tables = self.application.session.UnreferencedTables()
795    
796            lst = [(t.Title(), t) for t in tables]
797            lst.sort()
798            titles = [i[0] for i in lst]
799            dlg = wxMultipleChoiceDialog(self, _("Pick the tables to close:"),
800                                         _("Close Table"), titles,
801                                         size = (400, 300),
802                                         style = wxDEFAULT_DIALOG_STYLE |
803                                                 wxRESIZE_BORDER)
804            if dlg.ShowModal() == wxID_OK:
805                for i in dlg.GetValue():
806                    self.application.session.RemoveTable(lst[i][1])
807    
808    
809        def TableShow(self):
810            """Offer a multi-selection dialog for tables to be displayed
811    
812            The windows for the selected tables are opened or brought to
813            the front.
814            """
815            tables = self.application.session.Tables()
816    
817            lst = [(t.Title(), t) for t in tables]
818            lst.sort()
819            titles = [i[0] for i in lst]
820            dlg = wxMultipleChoiceDialog(self, _("Pick the table to show:"),
821                                         _("Show Table"), titles,
822                                         size = (400,300),
823                                         style = wxDEFAULT_DIALOG_STYLE |
824                                                 wxRESIZE_BORDER)
825            if (dlg.ShowModal() == wxID_OK):
826                for i in dlg.GetValue():
827                    # XXX: if the table belongs to a layer, open a
828                    # LayerTableFrame instead of QueryTableFrame
829                    self.ShowTableView(lst[i][1])
830    
831        def TableJoin(self):
832            dlg = JoinDialog(self, _("Join Tables"), self.application.session)
833            dlg.ShowModal()
834    
835        def ShowTableView(self, table):
836            """Open a table view for the table and optionally"""
837            name = "table_view%d" % id(table)
838            dialog = self.get_open_dialog(name)
839            if dialog is None:
840                dialog = tableview.QueryTableFrame(self, name,
841                                                   _("Table: %s") % table.Title(),
842                                                   table)
843                self.add_dialog(name, dialog)
844                dialog.Show(True)
845            dialog.Raise()
846    
847        def TableRename(self):
848            """Let the user rename a table"""
849    
850            # First, let the user select a table
851            tables = self.application.session.Tables()
852            lst = [(t.Title(), t) for t in tables]
853            lst.sort()
854            titles = [i[0] for i in lst]
855            dlg = wxMultipleChoiceDialog(self, _("Pick the table to rename:"),
856                                         _("Rename Table"), titles,
857                                         size = (400,300),
858                                         style = wxDEFAULT_DIALOG_STYLE |
859                                                 wxRESIZE_BORDER)
860            if (dlg.ShowModal() == wxID_OK):
861                to_rename = [lst[i][1] for i in dlg.GetValue()]
862                dlg.Destroy()
863            else:
864                to_rename = []
865    
866            # Second, let the user rename the layers
867            for table in to_rename:
868                dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
869                                        table.Title())
870                try:
871                    if dlg.ShowModal() == wxID_OK:
872                        title = dlg.GetValue()
873                        if title != "":
874                            table.SetTitle(title)
875    
876                            # Make sure the session is marked as modified.
877                            # FIXME: This should be handled automatically,
878                            # but that requires more changes to the tables
879                            # than I have time for currently.
880                            self.application.session.changed()
881                finally:
882                    dlg.Destroy()
883    
884    
885      def ZoomInTool(self):      def ZoomInTool(self):
886          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
887    
# Line 627  class MainWindow(DockFrame): Line 901  class MainWindow(DockFrame):
901      def FullExtent(self):      def FullExtent(self):
902          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
903    
904        def FullLayerExtent(self):
905            self.canvas.FitLayerToWindow(self.current_layer())
906    
907        def FullSelectionExtent(self):
908            self.canvas.FitSelectedToWindow()
909    
910        def ExportMap(self):
911            self.canvas.Export()
912    
913      def PrintMap(self):      def PrintMap(self):
914          self.canvas.Print()          self.canvas.Print()
915    
916      def RenameMap(self):      def RenameMap(self):
917          dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",          dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
918                                  self.Map().Title())                                  self.Map().Title())
919          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
920              title = dlg.GetValue()              title = dlg.GetValue()
921              if title != "":              if title != "":
922                  self.Map().SetTitle(title)                  self.Map().SetTitle(title)
                 self.__SetTitle(title)  
923    
924          dlg.Destroy()          dlg.Destroy()
925    
926        def RenameLayer(self):
927            """Let the user rename the currently selected layer"""
928            layer = self.current_layer()
929            if layer is not None:
930                dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
931                                        layer.Title())
932                try:
933                    if dlg.ShowModal() == wxID_OK:
934                        title = dlg.GetValue()
935                        if title != "":
936                            layer.SetTitle(title)
937                finally:
938                    dlg.Destroy()
939    
940      def identify_view_on_demand(self, layer, shapes):      def identify_view_on_demand(self, layer, shapes):
941            """Subscribed to the canvas' SHAPES_SELECTED message
942    
943            If the current tool is the identify tool, at least one shape is
944            selected and the identify dialog is not shown, show the dialog.
945            """
946            # If the selection has become empty we don't need to do
947            # anything. Otherwise it could happen that the dialog was popped
948            # up when the selection became empty, e.g. when a new selection
949            # is opened while the identify tool is active and dialog had
950            # been closed
951            if not shapes:
952                return
953    
954          name = "identify_view"          name = "identify_view"
955          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
956              if not self.dialog_open(name):              if not self.dialog_open(name):
# Line 652  class MainWindow(DockFrame): Line 961  class MainWindow(DockFrame):
961                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
962                  pass                  pass
963    
964      def __SetTitle(self, title):      def title_changed(self, map):
965          self.SetTitle("Thuban - " + title)          """Subscribed to the canvas' TITLE_CHANGED messages"""
966            self.update_title()
967    
968        def update_title(self):
969            """Update the window's title according to it's current state.
970    
971            In this default implementation the title is 'Thuban - ' followed
972            by the map's title or simply 'Thuban' if there is not map.
973            Derived classes should override this method to get different
974            titles.
975    
976            This method is called automatically by other methods when the
977            title may have to change. For the methods implemented in this
978            class this usually only means that a different map has been set
979            or the current map's title has changed.
980            """
981            map = self.Map()
982            if map is not None:
983                title = _("Thuban - %s") % (map.Title(),)
984            else:
985                title = _("Thuban")
986            self.SetTitle(title)
987    
988    
989  #  #
990  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 695  def _has_selected_layer(context): Line 1026  def _has_selected_layer(context):
1026      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
1027      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
1028    
1029    def _has_selected_layer_visible(context):
1030        """Return true if a layer is selected in the context which is
1031        visible."""
1032        if context.mainwindow.has_selected_layer():
1033            layer = context.mainwindow.current_layer()
1034            if layer.Visible(): return True
1035        return False
1036    
1037    def _has_selected_shape_layer(context):
1038        """Return true if a shape layer is selected in the context"""
1039        return context.mainwindow.has_selected_shape_layer()
1040    
1041    def _has_selected_shapes(context):
1042        """Return true if a layer is selected in the context"""
1043        return context.mainwindow.has_selected_shapes()
1044    
1045  def _can_remove_layer(context):  def _can_remove_layer(context):
1046      return context.mainwindow.CanRemoveLayer()      return context.mainwindow.CanRemoveLayer()
1047    
# Line 710  def _has_visible_map(context): Line 1057  def _has_visible_map(context):
1057      if map is not None:      if map is not None:
1058          for layer in map.Layers():          for layer in map.Layers():
1059              if layer.Visible():              if layer.Visible():
1060                  return 1                  return True
1061      return 0      return False
1062    
1063  def _has_legend_shown(context):  def _has_legend_shown(context):
1064      """Return true if the legend window is shown"""      """Return true if the legend window is shown"""
1065      return context.mainwindow.LegendShown()      return context.mainwindow.LegendShown()
1066    
1067    def _has_gdal_support(context):
1068        """Return True if the GDAL is available"""
1069        return Thuban.Model.resource.has_gdal_support()
1070    
1071    def _has_dbconnections(context):
1072        """Return whether the the session has database connections"""
1073        return context.session.HasDBConnections()
1074    
1075    def _has_postgis_support(context):
1076        return has_postgis_support()
1077    
1078    
1079  # File menu  # File menu
1080  _method_command("new_session", _("&New Session"), "NewSession")  _method_command("new_session", _("&New Session"), "NewSession",
1081  _method_command("open_session", _("&Open Session"), "OpenSession")                  helptext = _("Start a new session"))
1082  _method_command("save_session", _("&Save Session"), "SaveSession")  _method_command("open_session", _("&Open Session..."), "OpenSession",
1083  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")                  helptext = _("Open a session file"))
1084    _method_command("save_session", _("&Save Session"), "SaveSession",
1085                    helptext =_("Save this session to the file it was opened from"))
1086    _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs",
1087                    helptext = _("Save this session to a new file"))
1088  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
1089                  checked = _has_tree_window_shown)                  checked = _has_tree_window_shown,
1090                    helptext = _("Toggle on/off the session tree analysis window"))
1091  _method_command("toggle_legend", _("Legend"), "ToggleLegend",  _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1092                  checked = _has_legend_shown)                  checked = _has_legend_shown,
1093  _method_command("exit", _("E&xit"), "Exit")                  helptext = _("Toggle Legend on/off"))
1094    _method_command("database_management", _("&Database Connections..."),
1095                    "DatabaseManagement",
1096                    sensitive = _has_postgis_support)
1097    _method_command("exit", _("E&xit"), "Exit",
1098                    helptext = _("Finish working with Thuban"))
1099    
1100  # Help menu  # Help menu
1101  _method_command("help_about", _("&About"), "About")  _method_command("help_about", _("&About..."), "About",
1102                    helptext = _("Info about Thuban authors, version and modules"))
1103    
1104    
1105  # Map menu  # Map menu
1106  _method_command("map_projection", _("Pro&jection"), "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection",
1107                    helptext = _("Set or change the map projection"))
1108    
1109  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
1110                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
# Line 753  _tool_command("map_label_tool", _("&Labe Line 1123  _tool_command("map_label_tool", _("&Labe
1123                helptext = _("Add/Remove labels"), icon = "label",                helptext = _("Add/Remove labels"), icon = "label",
1124                sensitive = _has_visible_map)                sensitive = _has_visible_map)
1125  _method_command("map_full_extent", _("&Full extent"), "FullExtent",  _method_command("map_full_extent", _("&Full extent"), "FullExtent",
1126                 helptext = _("Full Extent"), icon = "fullextent",                 helptext = _("Zoom to the full map extent"), icon = "fullextent",
1127                sensitive = _has_visible_map)                sensitive = _has_visible_map)
1128    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
1129                    helptext = _("Zoom to the full layer extent"),
1130                    icon = "fulllayerextent", sensitive = _has_selected_layer)
1131    _method_command("selected_full_extent", _("&Full selection extent"),
1132                    "FullSelectionExtent",
1133                    helptext = _("Zoom to the full selection extent"),
1134                    icon = "fullselextent", sensitive = _has_selected_shapes)
1135    _method_command("map_export", _("E&xport"), "ExportMap",
1136                    helptext = _("Export the map to file"))
1137  _method_command("map_print", _("Prin&t"), "PrintMap",  _method_command("map_print", _("Prin&t"), "PrintMap",
1138                  helptext = _("Print the map"))                  helptext = _("Print the map"))
1139  _method_command("map_rename", _("&Rename"), "RenameMap",  _method_command("map_rename", _("&Rename..."), "RenameMap",
1140                  helptext = _("Rename the map"))                  helptext = _("Rename the map"))
1141    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
1142  # Layer menu                  helptext = _("Add a new layer to the map"))
1143  _method_command("layer_add", _("&Add Layer"), "AddLayer",  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1144                  helptext = _("Add a new layer to active map"))                  helptext = _("Add a new image layer to the map"),
1145                    sensitive = _has_gdal_support)
1146    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1147                    helptext = _("Add a new database layer to active map"),
1148                    sensitive = _has_dbconnections)
1149  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1150                  helptext = _("Remove selected layer(s)"),                  helptext = _("Remove selected layer"),
1151                  sensitive = _can_remove_layer)                  sensitive = _can_remove_layer)
1152    
1153    # Layer menu
1154    _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
1155                    sensitive = _has_selected_layer,
1156                    helptext = _("Specify projection for selected layer"))
1157    _method_command("layer_duplicate", _("&Duplicate"), "DuplicateLayer",
1158                    helptext = _("Duplicate selected layer"),
1159              sensitive = lambda context: context.mainwindow.CanDuplicateLayer())
1160    _method_command("layer_rename", _("Re&name ..."), "RenameLayer",
1161                    helptext = _("Rename selected layer"),
1162                    sensitive = _has_selected_layer)
1163  _method_command("layer_raise", _("&Raise"), "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
1164                  helptext = _("Raise selected layer(s)"),                  helptext = _("Raise selected layer"),
1165                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1166  _method_command("layer_lower", _("&Lower"), "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
1167                  helptext = _("Lower selected layer(s)"),                  helptext = _("Lower selected layer"),
1168                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1169  _method_command("layer_show", _("&Show"), "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
1170                  helptext = _("Make selected layer(s) visible"),                  helptext = _("Make selected layer visible"),
1171                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1172  _method_command("layer_hide", _("&Hide"), "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
1173                  helptext = _("Make selected layer(s) unvisible"),                  helptext = _("Make selected layer unvisible"),
1174                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1175  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1176                  helptext = _("Show the selected layer's table"),                  helptext = _("Show the selected layer's table"),
1177                    sensitive = _has_selected_shape_layer)
1178    _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1179                    sensitive = _has_selected_layer,
1180                    helptext = _("Edit the properties of the selected layer"))
1181    _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1182                    sensitive = _has_selected_shape_layer,
1183                    helptext = _("Join and attach a table to the selected layer"))
1184    
1185    # further layer methods:
1186    _method_command("layer_to_top", _("&Top"), "LayerToTop",
1187                    helptext = _("Put selected layer to the top"),
1188                    sensitive = _has_selected_layer)
1189    _method_command("layer_to_bottom", _("&Bottom"), "LayerToBottom",
1190                    helptext = _("Put selected layer to the bottom"),
1191                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1192  _method_command("layer_properties", _("Properties"), "LayerEditProperties",  _method_command("layer_visibility", _("&Visible"), "ToggleLayerVisibility",
1193                    checked = _has_selected_layer_visible,
1194                    helptext = _("Toggle visibility of selected layer"),
1195                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1196    
1197  # the menu structure  def _can_unjoin(context):
1198  main_menu = Menu("<main>", "<main>",      """Return whether the Layer/Unjoin command can be executed.
1199                   [Menu("file", _("&File"),  
1200                         ["new_session", "open_session", None,      This is the case if a layer is selected and that layer has a
1201                          "save_session", "save_session_as", None,      shapestore that has an original shapestore.
1202                          "toggle_session_tree", None,      """
1203                          "exit"]),      layer = context.mainwindow.SelectedLayer()
1204                    Menu("map", _("&Map"),      if layer is None:
1205                         ["layer_add", "layer_remove",          return 0
1206        getstore = getattr(layer, "ShapeStore", None)
1207        if getstore is not None:
1208            return getstore().OrigShapeStore() is not None
1209        else:
1210            return 0
1211    _method_command("layer_unjointable", _("&Unjoin Table..."), "LayerUnjoinTable",
1212                    sensitive = _can_unjoin,
1213                    helptext = _("Undo the last join operation"))
1214    
1215    
1216    def _has_tables(context):
1217        return bool(context.session.Tables())
1218    
1219    # Table menu
1220    _method_command("table_open", _("&Open..."), "TableOpen",
1221                    helptext = _("Open a DBF-table from a file"))
1222    _method_command("table_close", _("&Close..."), "TableClose",
1223           sensitive = lambda context: bool(context.session.UnreferencedTables()),
1224                    helptext = _("Close one or more tables from a list"))
1225    _method_command("table_rename", _("&Rename..."), "TableRename",
1226                    sensitive = _has_tables,
1227                    helptext = _("Rename one or more tables"))
1228    _method_command("table_show", _("&Show..."), "TableShow",
1229                    sensitive = _has_tables,
1230                    helptext = _("Show one or more tables in a dialog"))
1231    _method_command("table_join", _("&Join..."), "TableJoin",
1232                    sensitive = _has_tables,
1233                    helptext = _("Join two tables creating a new one"))
1234    
1235    #  Export only under Windows ...
1236    map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1237                          None,                          None,
1238                            "map_rename",
1239                          "map_projection",                          "map_projection",
1240                          None,                          None,
1241                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1242                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
                         None,  
1243                          "map_full_extent",                          "map_full_extent",
1244                            "layer_full_extent",
1245                            "selected_full_extent",
1246                          None,                          None,
1247                          "toggle_legend",                          "map_identify_tool", "map_label_tool",
1248                          None,                          None,
1249                          "map_print",                          "toggle_legend",
1250                          None,                          None]
1251                          "map_rename"]),  if wxPlatform == '__WXMSW__':
1252        map_menu.append("map_export")
1253    map_menu.append("map_print")
1254    
1255    # the menu structure
1256    main_menu = Menu("<main>", "<main>",
1257                     [Menu("file", _("&File"),
1258                           ["new_session", "open_session", None,
1259                            "save_session", "save_session_as", None,
1260                            "database_management", None,
1261                            "toggle_session_tree", None,
1262                            "exit"]),
1263                      Menu("map", _("&Map"), map_menu),
1264                    Menu("layer", _("&Layer"),                    Menu("layer", _("&Layer"),
1265                          ["layer_raise", "layer_lower",                         ["layer_rename", "layer_duplicate",
1266                            None,
1267                            "layer_raise", "layer_lower",
1268                          None,                          None,
1269                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
1270                          None,                          None,
1271                            "layer_projection",
1272                            None,
1273                          "layer_show_table",                          "layer_show_table",
1274                            "layer_jointable",
1275                            "layer_unjointable",
1276                          None,                          None,
1277                          "layer_properties"]),                          "layer_properties"]),
1278                      Menu("table", _("&Table"),
1279                           ["table_open", "table_close", "table_rename",
1280                           None,
1281                           "table_show",
1282                           None,
1283                           "table_join"]),
1284                    Menu("help", _("&Help"),                    Menu("help", _("&Help"),
1285                         ["help_about"])])                         ["help_about"])])
1286    
# Line 821  main_menu = Menu("<main>", "<main>", Line 1288  main_menu = Menu("<main>", "<main>",
1288    
1289  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
1290                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
1291                       "map_full_extent", None,                       "map_full_extent",
1292                         "layer_full_extent",
1293                         "selected_full_extent",
1294                         None,
1295                       "map_identify_tool", "map_label_tool"])                       "map_identify_tool", "map_label_tool"])
1296    
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