/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 1464 by bh, Fri Jul 18 18:20:40 2003 UTC revision 2051 by frank, Wed Jan 21 17:09:15 2004 UTC
# 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
27  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
28  from Thuban.Model.layer import Layer, RasterLayer  from Thuban.Model.layer import Layer, RasterLayer
29    from Thuban.Model.postgisdb import PostGISShapeStore, has_postgis_support
30  # XXX: replace this by  # XXX: replace this by
31  # from wxPython.lib.dialogs import wxMultipleChoiceDialog  # from wxPython.lib.dialogs import wxMultipleChoiceDialog
32  # when Thuban does not support wxPython 2.4.0 any more.  # when Thuban does not support wxPython 2.4.0 any more.
# Line 49  from about import About Line 47  from about import About
47    
48  from Thuban.UI.dock import DockFrame  from Thuban.UI.dock import DockFrame
49  from Thuban.UI.join import JoinDialog  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  import Thuban.Model.resource
53    
# Line 104  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 135  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 372  class MainWindow(DockFrame): Line 378  class MainWindow(DockFrame):
378    
379      def OpenSession(self):      def OpenSession(self):
380          if self.save_modified_session() != wxID_CANCEL:          if self.save_modified_session() != wxID_CANCEL:
381              dlg = wxFileDialog(self, _("Open Session"), ".", "",              dlg = wxFileDialog(self, _("Open Session"),
382                                   self.application.Path("data"), "",
383                                 "Thuban Session File (*.thuban)|*.thuban",                                 "Thuban Session File (*.thuban)|*.thuban",
384                                 wxOPEN)                                 wxOPEN)
385              if dlg.ShowModal() == wxID_OK:              if dlg.ShowModal() == wxID_OK:
386                  self.application.OpenSession(dlg.GetPath())                  self.application.OpenSession(dlg.GetPath(),
387                                                 self.run_db_param_dialog)
388                    self.application.SetPath("data", dlg.GetPath())
389              dlg.Destroy()              dlg.Destroy()
390    
391        def run_db_param_dialog(self, parameters, message):
392            dlg = DBDialog(self, _("DB Connection Parameters"), parameters,
393                           message)
394            return dlg.RunDialog()
395    
396      def SaveSession(self):      def SaveSession(self):
397          if self.application.session.filename == None:          if self.application.session.filename == None:
398              self.SaveSessionAs()              self.SaveSessionAs()
# Line 386  class MainWindow(DockFrame): Line 400  class MainWindow(DockFrame):
400              self.application.SaveSession()              self.application.SaveSession()
401    
402      def SaveSessionAs(self):      def SaveSessionAs(self):
403          dlg = wxFileDialog(self, _("Save Session As"), ".", "",          dlg = wxFileDialog(self, _("Save Session As"),
404                               self.application.Path("data"), "",
405                             "Thuban Session File (*.thuban)|*.thuban",                             "Thuban Session File (*.thuban)|*.thuban",
406                             wxSAVE|wxOVERWRITE_PROMPT)                             wxSAVE|wxOVERWRITE_PROMPT)
407          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
408              self.application.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
409              self.application.SaveSession()              self.application.SaveSession()
410                self.application.SetPath("data",dlg.GetPath())
411          dlg.Destroy()          dlg.Destroy()
412    
413      def Exit(self):      def Exit(self):
# Line 414  class MainWindow(DockFrame): Line 430  class MainWindow(DockFrame):
430    
431      def SetMap(self, map):      def SetMap(self, map):
432          self.canvas.SetMap(map)          self.canvas.SetMap(map)
433          self.__SetTitle(map.Title())          self.update_title()
434    
435          dialog = self.FindRegisteredDock("legend")          dialog = self.FindRegisteredDock("legend")
436          if dialog is not None:          if dialog is not None:
# Line 445  class MainWindow(DockFrame): Line 461  class MainWindow(DockFrame):
461          dlg.ShowModal()          dlg.ShowModal()
462          dlg.Destroy()          dlg.Destroy()
463    
464        def DatabaseManagement(self):
465            name = "dbmanagement"
466            dialog = self.get_open_dialog(name)
467            if dialog is None:
468                map = self.canvas.Map()
469                dialog = DBFrame(self, name, self.application.Session())
470                self.add_dialog(name, dialog)
471                dialog.Show()
472            dialog.Raise()
473    
474      def AddLayer(self):      def AddLayer(self):
475          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select one or more data files"),
476                             wxOPEN)                             self.application.Path("data"), "",
477                               _("Shapefiles (*.shp)") + "|*.shp;*.SHP|" +
478                               _("All Files (*.*)") + "|*.*",
479                               wxOPEN | wxMULTIPLE)
480          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
481              filename = dlg.GetPath()              filenames = dlg.GetPaths()
482              title = os.path.splitext(os.path.basename(filename))[0]              for filename in filenames:
483              map = self.canvas.Map()                  title = os.path.splitext(os.path.basename(filename))[0]
484              has_layers = map.HasLayers()                  map = self.canvas.Map()
485              try:                  has_layers = map.HasLayers()
486                  store = self.application.Session().OpenShapefile(filename)                  try:
487              except IOError:                      store = self.application.Session().OpenShapefile(filename)
488                  # the layer couldn't be opened                  except IOError:
489                  self.RunMessageBox(_("Add Layer"),                      # the layer couldn't be opened
490                                     _("Can't open the file '%s'.") % filename)                      self.RunMessageBox(_("Add Layer"),
491              else:                                         _("Can't open the file '%s'.")%filename)
492                  layer = Layer(title, store)                  else:
493                  map.AddLayer(layer)                      layer = Layer(title, store)
494                  if not has_layers:                      map.AddLayer(layer)
495                      # if we're adding a layer to an empty map, fit the                      if not has_layers:
496                      # new map to the window                          # if we're adding a layer to an empty map, fit the
497                      self.canvas.FitMapToWindow()                          # new map to the window
498                            self.canvas.FitMapToWindow()
499                        self.application.SetPath("data",filename)
500          dlg.Destroy()          dlg.Destroy()
501    
502      def AddRasterLayer(self):      def AddRasterLayer(self):
503          dlg = wxFileDialog(self, _("Select an image file"), ".", "", "*.*",          dlg = wxFileDialog(self, _("Select an image file"),
504                               self.application.Path("data"), "", "*.*",
505                             wxOPEN)                             wxOPEN)
506          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
507              filename = dlg.GetPath()              filename = dlg.GetPath()
# Line 488  class MainWindow(DockFrame): Line 520  class MainWindow(DockFrame):
520                      # if we're adding a layer to an empty map, fit the                      # if we're adding a layer to an empty map, fit the
521                      # new map to the window                      # new map to the window
522                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
523                    self.application.SetPath("data", filename)
524            dlg.Destroy()
525    
526        def AddDBLayer(self):
527            """Add a layer read from a database"""
528            session = self.application.Session()
529            dlg = ChooseDBTableDialog(self, self.application.Session())
530    
531            if dlg.ShowModal() == wxID_OK:
532                dbconn, dbtable = dlg.GetTable()
533                try:
534                    title = str(dbtable)
535    
536                    # Chose the correct Interface for the database type
537                    store = PostGISShapeStore(dbconn, dbtable)
538                    session.AddShapeStore(store)
539                    layer = Layer(title, store)
540                except:
541                    # Some error occured while initializing the layer
542                    self.RunMessageBox(_("Add Layer from database"),
543                                       _("Can't open the database table '%s'")
544                                       % dbtable)
545    
546                map = self.canvas.Map()
547    
548                has_layers = map.HasLayers()
549                map.AddLayer(layer)
550                if not has_layers:
551                    self.canvas.FitMapToWindow()
552    
553          dlg.Destroy()          dlg.Destroy()
554    
555      def RemoveLayer(self):      def RemoveLayer(self):
# Line 529  class MainWindow(DockFrame): Line 591  class MainWindow(DockFrame):
591          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
592          return self.canvas.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
593    
594        def has_selected_shape_layer(self):
595            """Return true if a shape layer is currently selected"""
596            return isinstance(self.current_layer(), Layer)
597    
598      def has_selected_shapes(self):      def has_selected_shapes(self):
599          """Return true if a shape is currently selected"""          """Return true if a shape is currently selected"""
600          return self.canvas.HasSelectedShapes()          return self.canvas.HasSelectedShapes()
# Line 664  class MainWindow(DockFrame): Line 730  class MainWindow(DockFrame):
730          return dialog is not None and dialog.IsShown()          return dialog is not None and dialog.IsShown()
731    
732      def TableOpen(self):      def TableOpen(self):
733          dlg = wxFileDialog(self, _("Open Table"), ".", "",          dlg = wxFileDialog(self, _("Open Table"),
734                               self.application.Path("data"), "",
735                             _("DBF Files (*.dbf)") + "|*.dbf|" +                             _("DBF Files (*.dbf)") + "|*.dbf|" +
736                             #_("CSV Files (*.csv)") + "|*.csv|" +                             #_("CSV Files (*.csv)") + "|*.csv|" +
737                             _("All Files (*.*)") + "|*.*",                             _("All Files (*.*)") + "|*.*",
# Line 680  class MainWindow(DockFrame): Line 747  class MainWindow(DockFrame):
747                                     _("Can't open the file '%s'.") % filename)                                     _("Can't open the file '%s'.") % filename)
748              else:              else:
749                  self.ShowTableView(table)                  self.ShowTableView(table)
750                    self.application.SetPath("data",filename)
751    
752      def TableClose(self):      def TableClose(self):
753          tables = self.application.session.UnreferencedTables()          tables = self.application.session.UnreferencedTables()
# Line 756  class MainWindow(DockFrame): Line 824  class MainWindow(DockFrame):
824    
825          # Second, let the user rename the layers          # Second, let the user rename the layers
826          for table in to_rename:          for table in to_rename:
827              dlg = wxTextEntryDialog(self, "Table Title: ", "Rename Table",              dlg = wxTextEntryDialog(self, _("Table Title:"), _("Rename Table"),
828                                      table.Title())                                      table.Title())
829              try:              try:
830                  if dlg.ShowModal() == wxID_OK:                  if dlg.ShowModal() == wxID_OK:
# Line 805  class MainWindow(DockFrame): Line 873  class MainWindow(DockFrame):
873          self.canvas.Print()          self.canvas.Print()
874    
875      def RenameMap(self):      def RenameMap(self):
876          dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",          dlg = wxTextEntryDialog(self, _("Map Title:"), _("Rename Map"),
877                                  self.Map().Title())                                  self.Map().Title())
878          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
879              title = dlg.GetValue()              title = dlg.GetValue()
880              if title != "":              if title != "":
881                  self.Map().SetTitle(title)                  self.Map().SetTitle(title)
                 self.__SetTitle(title)  
882    
883          dlg.Destroy()          dlg.Destroy()
884    
# Line 819  class MainWindow(DockFrame): Line 886  class MainWindow(DockFrame):
886          """Let the user rename the currently selected layer"""          """Let the user rename the currently selected layer"""
887          layer = self.current_layer()          layer = self.current_layer()
888          if layer is not None:          if layer is not None:
889              dlg = wxTextEntryDialog(self, "Layer Title: ", "Rename Layer",              dlg = wxTextEntryDialog(self, _("Layer Title:"), _("Rename Layer"),
890                                      layer.Title())                                      layer.Title())
891              try:              try:
892                  if dlg.ShowModal() == wxID_OK:                  if dlg.ShowModal() == wxID_OK:
# Line 853  class MainWindow(DockFrame): Line 920  class MainWindow(DockFrame):
920                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
921                  pass                  pass
922    
923      def __SetTitle(self, title):      def title_changed(self, map):
924          self.SetTitle("Thuban - " + title)          """Subscribed to the canvas' TITLE_CHANGED messages"""
925            self.update_title()
926    
927        def update_title(self):
928            """Update the window's title according to it's current state.
929    
930            In this default implementation the title is 'Thuban - ' followed
931            by the map's title or simply 'Thuban' if there is not map.
932            Derived classes should override this method to get different
933            titles.
934    
935            This method is called automatically by other methods when the
936            title may have to change. For the methods implemented in this
937            class this usually only means that a different map has been set
938            or the current map's title has changed.
939            """
940            map = self.Map()
941            if map is not None:
942                title = _("Thuban - %s") % (map.Title(),)
943            else:
944                title = _("Thuban")
945            self.SetTitle(title)
946    
947    
948  #  #
949  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 896  def _has_selected_layer(context): Line 985  def _has_selected_layer(context):
985      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
986      return context.mainwindow.has_selected_layer()      return context.mainwindow.has_selected_layer()
987    
988    def _has_selected_shape_layer(context):
989        """Return true if a shape layer is selected in the context"""
990        return context.mainwindow.has_selected_shape_layer()
991    
992  def _has_selected_shapes(context):  def _has_selected_shapes(context):
993      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
994      return context.mainwindow.has_selected_shapes()      return context.mainwindow.has_selected_shapes()
# Line 926  def _has_gdal_support(context): Line 1019  def _has_gdal_support(context):
1019      """Return True if the GDAL is available"""      """Return True if the GDAL is available"""
1020      return Thuban.Model.resource.has_gdal_support()      return Thuban.Model.resource.has_gdal_support()
1021    
1022    def _has_dbconnections(context):
1023        """Return whether the the session has database connections"""
1024        return context.session.HasDBConnections()
1025    
1026    def _has_postgis_support(context):
1027        return has_postgis_support()
1028    
1029    
1030  # File menu  # File menu
1031  _method_command("new_session", _("&New Session"), "NewSession",  _method_command("new_session", _("&New Session"), "NewSession",
1032                  helptext = _("Start a new session"))                  helptext = _("Start a new session"))
# Line 941  _method_command("toggle_session_tree", _ Line 1042  _method_command("toggle_session_tree", _
1042  _method_command("toggle_legend", _("Legend"), "ToggleLegend",  _method_command("toggle_legend", _("Legend"), "ToggleLegend",
1043                  checked = _has_legend_shown,                  checked = _has_legend_shown,
1044                  helptext = _("Toggle Legend on/off"))                  helptext = _("Toggle Legend on/off"))
1045    _method_command("database_management", _("&Database Connections..."),
1046                    "DatabaseManagement",
1047                    sensitive = _has_postgis_support)
1048  _method_command("exit", _("E&xit"), "Exit",  _method_command("exit", _("E&xit"), "Exit",
1049                  helptext = _("Finish working with Thuban"))                  helptext = _("Finish working with Thuban"))
1050    
# Line 990  _method_command("layer_add", _("&Add Lay Line 1094  _method_command("layer_add", _("&Add Lay
1094  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",  _method_command("rasterlayer_add", _("&Add Image Layer..."), "AddRasterLayer",
1095                  helptext = _("Add a new image layer to the map"),                  helptext = _("Add a new image layer to the map"),
1096                  sensitive = _has_gdal_support)                  sensitive = _has_gdal_support)
1097    _method_command("layer_add_db", _("Add &Database Layer..."), "AddDBLayer",
1098                    helptext = _("Add a new database layer to active map"),
1099                    sensitive = _has_dbconnections)
1100  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
1101                  helptext = _("Remove selected layer"),                  helptext = _("Remove selected layer"),
1102                  sensitive = _can_remove_layer)                  sensitive = _can_remove_layer)
# Line 1018  _method_command("layer_hide", _("&Hide") Line 1125  _method_command("layer_hide", _("&Hide")
1125                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
1126  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
1127                  helptext = _("Show the selected layer's table"),                  helptext = _("Show the selected layer's table"),
1128                  sensitive = _has_selected_layer)                  sensitive = _has_selected_shape_layer)
1129  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
1130                  sensitive = _has_selected_layer,                  sensitive = _has_selected_layer,
1131                  helptext = _("Edit the properties of the selected layer"))                  helptext = _("Edit the properties of the selected layer"))
1132  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",  _method_command("layer_jointable", _("&Join Table..."), "LayerJoinTable",
1133                  sensitive = _has_selected_layer,                  sensitive = _has_selected_shape_layer,
1134                  helptext = _("Join and attach a table to the selected layer"))                  helptext = _("Join and attach a table to the selected layer"))
1135    
1136  def _can_unjoin(context):  def _can_unjoin(context):
# Line 1065  _method_command("table_join", _("&Join.. Line 1172  _method_command("table_join", _("&Join..
1172                  helptext = _("Join two tables creating a new one"))                  helptext = _("Join two tables creating a new one"))
1173    
1174  #  Export only under Windows ...  #  Export only under Windows ...
1175  map_menu = ["layer_add", "rasterlayer_add", "layer_remove",  map_menu = ["layer_add", "layer_add_db", "rasterlayer_add", "layer_remove",
1176                          None,                          None,
1177                          "map_rename",                          "map_rename",
1178                          "map_projection",                          "map_projection",
1179                          None,                          None,
1180                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
1181                          "map_pan_tool",                          "map_pan_tool",
1182                          "map_full_extent",                          "map_full_extent",
1183                          "layer_full_extent",                          "layer_full_extent",
1184                          "selected_full_extent",                          "selected_full_extent",
1185                          None,                          None,
# Line 1089  main_menu = Menu("<main>", "<main>", Line 1196  main_menu = Menu("<main>", "<main>",
1196                   [Menu("file", _("&File"),                   [Menu("file", _("&File"),
1197                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
1198                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
1199                            "database_management", None,
1200                          "toggle_session_tree", None,                          "toggle_session_tree", None,
1201                          "exit"]),                          "exit"]),
1202                    Menu("map", _("&Map"), map_menu),                    Menu("map", _("&Map"), map_menu),
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