/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/projdialog.py
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revision 1806 by bh, Fri Oct 10 10:36:34 2003 UTC revision 2470 by bh, Thu Dec 16 11:00:10 2004 UTC
# Line 1  Line 1 
1  # Copyright (c) 2003 by Intevation GmbH  # Copyright (c) 2003, 2004 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]>
4  # Frank Koormann <[email protected]>  # Frank Koormann <[email protected]>
# Line 21  from Thuban import _ Line 21  from Thuban import _
21  from Thuban.Model.proj import Projection, ProjFile  from Thuban.Model.proj import Projection, ProjFile
22    
23  from Thuban.Model.resource import get_user_proj_file, get_system_proj_file, \  from Thuban.Model.resource import get_user_proj_file, get_system_proj_file, \
24                                    read_proj_file, write_proj_file                                    read_proj_file, write_proj_file, \
25                                      DEFAULT_PROJ_FILE, EPSG_PROJ_FILE, \
26                                      EPSG_DEPRECATED_PROJ_FILE
27  from Thuban.UI.dialogs import NonModalNonParentDialog  from Thuban.UI.dialogs import NonModalNonParentDialog
28    
29    from common import ThubanBeginBusyCursor, ThubanEndBusyCursor
30    from sizers import NotebookLikeSizer
31    from projlist import PROJ_SELECTION_CHANGED, ProjectionList
32    from common import ThubanBeginBusyCursor, ThubanEndBusyCursor
33    
34    
35    
 ID_PROJ_ADVANCED  = 4001  
36  ID_PROJ_PROJCHOICE = 4002  ID_PROJ_PROJCHOICE = 4002
37  ID_PROJ_ADDTOLIST    = 4003  ID_PROJ_ADDTOLIST    = 4003
38  ID_PROJ_NEW       = 4004  ID_PROJ_NEW       = 4004
# Line 51  class ProjFrame(NonModalNonParentDialog) Line 58  class ProjFrame(NonModalNonParentDialog)
58          """          """
59          NonModalNonParentDialog.__init__(self, parent, name, title)          NonModalNonParentDialog.__init__(self, parent, name, title)
60    
61          self.projection_panels = [          self.projection_panel_defs = [
62              ("tmerc", _("Transverse Mercator"), TMPanel),              ("tmerc", _("Transverse Mercator"), TMPanel),
63              ("utm", _("Universal Transverse Mercator"), UTMPanel),              ("utm", _("Universal Transverse Mercator"), UTMPanel),
64              ("lcc", _("Lambert Conic Conformal"), LCCPanel),              ("lcc", _("Lambert Conic Conformal"), LCCPanel),
65              ("latlong", _("Geographic"), GeoPanel)]              ("latlong", _("Geographic"), GeoPanel),
66                ("longlat", _("Geographic"), GeoPanel)]#longlat is an alias of proj
67          self.receiver = receiver          self.receiver = receiver
68          self.haveTried = False          self.haveTried = False
69          self.curProjPanel = None          self.curProjPanel = None
70            self.__usrProjFile = None
71            self._sys_proj_files = {}
72    
73          self.build_dialog()          self.build_dialog()
74          self.Layout()          self.Layout()
75    
76          self.originalProjection = self.receiver.GetProjection()          self.originalProjection = self.receiver.GetProjection()
77    
78          self.__DoOnProjAvail()          self.projection_list.SelectProjection(self.originalProjection)
79          self.button_ok.SetFocus()          self.projection_list.SetFocus()
         self.availprojs.SetFocus()  
80    
81      def build_dialog(self):      def build_dialog(self):
82          """Build the dialog's widgets and set the event handlers"""          """Build the dialog's widgets and set the event handlers"""
# Line 80  class ProjFrame(NonModalNonParentDialog) Line 89  class ProjFrame(NonModalNonParentDialog)
89          #    The projection list and associated controls          #    The projection list and associated controls
90          #          #
91          vbox = wxBoxSizer(wxVERTICAL)          vbox = wxBoxSizer(wxVERTICAL)
92          main_box.Add(vbox, 0, wxALL|wxEXPAND)          main_box.Add(vbox, 4, wxALL|wxEXPAND)
93    
94          label = wxStaticText(self, -1, _("Available Projections:"))          #label = wxStaticText(self, -1, _("Available Projections:"))
95          vbox.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4)          #vbox.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4)
96    
97          hbox = wxBoxSizer(wxHORIZONTAL)          hbox = wxBoxSizer(wxHORIZONTAL)
98          vbox.Add(hbox, 1, wxALL|wxEXPAND)          vbox.Add(hbox, 1, wxALL|wxEXPAND)
99          self.availprojs = wxListBox(self, ID_PROJ_AVAIL,          proj_files = [self.load_user_proj(),
100                                      style=wxLB_EXTENDED|wxLB_SORT)                        self.load_system_proj(DEFAULT_PROJ_FILE)]
101          EVT_LISTBOX(self, ID_PROJ_AVAIL, self._OnProjAvail)          self.projection_list = ProjectionList(self, proj_files,
102          hbox.Add(self.availprojs, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4)                                                self.receiver.GetProjection())
103          self.__FillAvailList(selectCurrent = True)          hbox.Add(self.projection_list, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4)
104            self.projection_list.Subscribe(PROJ_SELECTION_CHANGED,
105                                           self.proj_selection_changed)
106    
107          # Projection List specific actions (Import/Export/Remove)          # Projection List specific actions (Import/Export/Remove)
108          buttons = wxBoxSizer(wxVERTICAL)          buttons = wxBoxSizer(wxVERTICAL)
# Line 107  class ProjFrame(NonModalNonParentDialog) Line 118  class ProjFrame(NonModalNonParentDialog)
118          EVT_BUTTON(self, ID_PROJ_REMOVE, self._OnRemove)          EVT_BUTTON(self, ID_PROJ_REMOVE, self._OnRemove)
119          buttons.Add(self.button_remove, 1, wxALL|wxEXPAND, 4)          buttons.Add(self.button_remove, 1, wxALL|wxEXPAND, 4)
120    
121            buttons.Add(20, 20, 0, wxEXPAND, 0)
122            label = wxStaticText(self, -1, _("Show EPSG:"))
123            buttons.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4)
124            self.check_epsg = wxCheckBox(self, -1, _("Normal"))
125            EVT_CHECKBOX(self, self.check_epsg.GetId(), self._OnShowEPSG)
126            buttons.Add(self.check_epsg, 1, wxALL|wxEXPAND, 4)
127            self.check_epsg_depr = wxCheckBox(self, -1, _("Deprecated"))
128            EVT_CHECKBOX(self, self.check_epsg_depr.GetId(), self._OnShowEPSG)
129            buttons.Add(self.check_epsg_depr, 1, wxALL|wxEXPAND, 4)
130    
131          # The file path          # The file path
132          self.projfilepath = wxStaticText(self, -1, "")          self.projfilepath = wxStaticText(self, -1, "")
133          vbox.Add(self.projfilepath, 0, wxALL|wxEXPAND)          vbox.Add(self.projfilepath, 0, wxALL|wxEXPAND)
# Line 116  class ProjFrame(NonModalNonParentDialog) Line 137  class ProjFrame(NonModalNonParentDialog)
137          #          #
138          self.edit_box = wxStaticBox(self, -1, _("Edit"))          self.edit_box = wxStaticBox(self, -1, _("Edit"))
139          sizer_edit = wxStaticBoxSizer(self.edit_box, wxHORIZONTAL)          sizer_edit = wxStaticBoxSizer(self.edit_box, wxHORIZONTAL)
140          main_box.Add(sizer_edit, 1, wxALL|wxEXPAND)          main_box.Add(sizer_edit, 5, wxALL|wxEXPAND)
141    
142          # Projection Specific Entries (Name/Projection)          # Projection Specific Entries (Name/Projection)
143          self.sizer_projctrls = wxBoxSizer(wxVERTICAL)          self.sizer_projctrls = wxBoxSizer(wxVERTICAL)
# Line 139  class ProjFrame(NonModalNonParentDialog) Line 160  class ProjFrame(NonModalNonParentDialog)
160          EVT_CHOICE(self, ID_PROJ_PROJCHOICE, self._OnProjChoice)          EVT_CHOICE(self, ID_PROJ_PROJCHOICE, self._OnProjChoice)
161          hbox.Add(self.projchoice, 1, wxALL|wxEXPAND, 4)          hbox.Add(self.projchoice, 1, wxALL|wxEXPAND, 4)
162          # Fill the projection choice list.          # Fill the projection choice list.
163          for proj, name, clazz in self.projection_panels:          self.nbsizer = NotebookLikeSizer()
164              self.projchoice.Append(name, [clazz, None])          self.sizer_projctrls.Add(self.nbsizer, 1,
165                                     wxALL|wxEXPAND|wxADJUST_MINSIZE, 3)
166            self.projection_panels = []
167            self.projchoice.Append(_("<Unknown>"), "")
168            for proj_type, name, cls in self.projection_panel_defs:
169                self.projchoice.Append(name, proj_type)
170                panel = cls(self, self.receiver)
171                panel.Hide()
172                panel.projection_index = len(self.projection_panels)
173                panel.projection_type = proj_type
174                self.projection_panels.append(panel)
175                self.nbsizer.Add(panel)
176            self.unknown_projection_panel = UnknownProjPanel(self, self.receiver)
177            self.unknown_projection_panel.Hide()
178            self.nbsizer.Add(self.unknown_projection_panel)
179    
180          # Projection Specific actions (New/Save/Add)          # Projection Specific actions (New/Save/Add)
181          buttons = wxBoxSizer(wxVERTICAL)          buttons = wxBoxSizer(wxVERTICAL)
# Line 184  class ProjFrame(NonModalNonParentDialog) Line 219  class ProjFrame(NonModalNonParentDialog)
219          top_box.Fit(self)          top_box.Fit(self)
220          top_box.SetSizeHints(self)          top_box.SetSizeHints(self)
221    
222        def OnClose(self, event):
223            self.projection_list.Unsubscribe(PROJ_SELECTION_CHANGED,
224                                             self.proj_selection_changed)
225            # Destroy the projection list explicitly so that it properly
226            # unsubscribes everything. It would be cleaner if the projection
227            # could do this by itself but wx doesn't always send destroy
228            # events for non-top-level widgets
229            self.projection_list.Destroy()
230            NonModalNonParentDialog.OnClose(self, event)
231    
232      def OnApply(self, event):      def OnApply(self, event):
233          self.__SetProjection()          self.__SetProjection()
234          self.haveTried = True          self.haveTried = True
# Line 205  class ProjFrame(NonModalNonParentDialog) Line 250  class ProjFrame(NonModalNonParentDialog)
250    
251      def _OnNew(self, event):      def _OnNew(self, event):
252    
253          # clear all selections          self.projection_list.ClearSelection()
         sel = self.availprojs.GetSelections()  
         for index in sel:  
             self.availprojs.SetSelection(index, False)  
   
254          self.projname.Clear()          self.projname.Clear()
255    
256          # supply a projection panel if there wasn't one          # supply a projection panel if there wasn't one
# Line 217  class ProjFrame(NonModalNonParentDialog) Line 258  class ProjFrame(NonModalNonParentDialog)
258              self.projchoice.SetSelection(0)              self.projchoice.SetSelection(0)
259              self.__DoOnProjChoice()              self.__DoOnProjChoice()
260    
261          self.curProjPanel.Clear()          if self.curProjPanel is not None:
262                self.curProjPanel.Clear()
263    
264      def _OnSave(self, event):      def _OnSave(self, event):
265    
266          sel = self.availprojs.GetSelections()          sel = self.projection_list.selected_projections()
267          assert len(sel) == 1,  "button shouldn't be enabled"          assert len(sel) == 1,  "button shouldn't be enabled"
268    
269          proj, projfile = self.availprojs.GetClientData(sel[0])          proj, projfile = sel[0]
270    
271          assert proj is not None and projfile is not None          assert proj is not None and projfile is not None
272    
273          newproj = self.__GetProjection()          newproj = self.__GetProjection()
274    
275          if newproj is not None:          if newproj is not None:
276                # FIXME: we should only allow this for the user proj file.
277              projfile.Replace(proj, newproj)              projfile.Replace(proj, newproj)
278              try:              self.write_proj_file(projfile)
279                  write_proj_file(projfile)              self.projection_list.SelectProjection(newproj)
             except IOError, (errno, errstr):  
                 self.__ShowError(projfile.GetFilename(), errstr)  
             self.availprojs.SetClientData(sel[0], [newproj, projfile])  
   
             self.__FillAvailList( selectProj = newproj.GetName())  
280    
281      def _OnAddToList(self, event):      def _OnAddToList(self, event):
282    
283          proj = self.__GetProjection()          proj = self.__GetProjection()
284          if proj is not None:          if proj is not None:
285              self.__usrProjFile.Add(proj)              self.__usrProjFile.Add(proj)
286              try:              self.write_proj_file(self.__usrProjFile)
287                  write_proj_file(self.__usrProjFile)              self.projection_list.SelectProjection(proj)
             except IOError, (errno, errstr):  
                 self.__ShowError(self.__userProjFile.GetFilename(), errstr)  
   
             self.__FillAvailList( selectProj = proj.GetName())  
   
     def _OnProjAvail(self, event):  
         self.__DoOnProjAvail()  
288    
289      def show_warnings(self, title, filename, warnings):      def show_warnings(self, title, filename, warnings):
290          """Show the warnings (a list of strings) in a dialog          """Show the warnings (a list of strings) in a dialog
# Line 266  class ProjFrame(NonModalNonParentDialog) Line 297  class ProjFrame(NonModalNonParentDialog)
297              self.parent.RunMessageBox(title, text)              self.parent.RunMessageBox(title, text)
298    
299      def _OnImport(self, event):      def _OnImport(self, event):
300            """Handler for the 'Import' button
301    
302          dlg = wxFileDialog(self, _("Import"), style = wxOPEN)          Ask the user for a filename, read the projections from that file
303            add them to the user ProjFile object and write the user file
304            back to disk.
305            """
306            dlg = wxFileDialog(self, _("Import"),
307                    self.parent.application.Path("projection"), style = wxOPEN)
308    
309          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
310              path = dlg.GetPath()              path = dlg.GetPath()
311    
312                ThubanBeginBusyCursor()
313              try:              try:
314                  projFile, warnings = read_proj_file(path)                  try:
315                  self.show_warnings(_("Warnings"), path, warnings)                      projFile, warnings = read_proj_file(path)
316                  for proj in projFile.GetProjections():                  except IOError, (errno, errstr):
317                      self.__usrProjFile.Add(proj)                      self.__ShowError(dlg.GetPath(), errstr)
318                  write_proj_file(self.__usrProjFile)                  else:
319              except IOError, (errno, errstr):                      self.show_warnings(_("Warnings"), path, warnings)
320                  self.__ShowError(dlg.GetPath(), errstr)                      for proj in projFile.GetProjections():
321                            self.__usrProjFile.Add(proj)
322              self.__FillAvailList()                      self.write_proj_file(self.__usrProjFile)
323                        self.parent.application.SetPath("projection", path)
324                finally:
325                    ThubanEndBusyCursor()
326          dlg.Destroy()          dlg.Destroy()
327    
328      def _OnExport(self, event):      def _OnExport(self, event):
329            """Handler for the 'Export' button.
330    
331          sel = self.availprojs.GetSelections()          Ask the user for a filename and write the selected projections
332            to that file.
333            """
334            sel = self.projection_list.selected_projections()
335          assert len(sel) != 0, "button should be disabled"          assert len(sel) != 0, "button should be disabled"
336    
337          dlg = wxFileDialog(self, _("Export"),          dlg = wxFileDialog(self, _("Export"),
338                          style = wxSAVE|wxOVERWRITE_PROMPT)                  self.parent.application.Path("projection"),
339                    style=wxSAVE|wxOVERWRITE_PROMPT)
340    
341          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
342              path = dlg.GetPath()              proj_file = ProjFile(dlg.GetPath())
343                for proj, pf in sel:
             projFile = ProjFile(path)  
   
             for i in sel:  
                 proj = self.availprojs.GetClientData(i)[CLIENT_PROJ]  
344                  if proj is not None:                  if proj is not None:
345                      projFile.Add(proj)                      proj_file.Add(proj)
346                self.write_proj_file(proj_file)
347              try:              self.parent.application.SetPath("projection", dlg.GetPath())
                 write_proj_file(projFile)  
             except IOError, (errno, errstr):  
                 self.__ShowError(dlg.GetPath(), errstr)  
348    
349          dlg.Destroy()          dlg.Destroy()
350    
351      def _OnRemove(self, event):      def _OnRemove(self, event):
352            """Handler for the 'Remove' button
353    
354          sel = self.availprojs.GetSelections()          Remove any selected projection that came from the user's
355            ProjFile. If the user ProjFile was modified write it back to
356            disk.
357            """
358            sel = self.projection_list.selected_projections()
359          assert len(sel) != 0, "button should be disabled!"          assert len(sel) != 0, "button should be disabled!"
360    
361          #          modified = False
362          # remove the items backwards so the indices don't change          for proj, pf in sel:
363          #              if proj is not None and pf is self.__usrProjFile:
364          sel = list(sel)                  pf.Remove(proj)
365          sel.sort()                  modified = True
         sel.reverse()  
   
         newselection = -1  
         if len(sel) == 1:  
             newselection = sel[0] - 1  
             if newselection < 0:  
                 newselection = 0  
   
         for i in sel:  
             proj, projfile = self.availprojs.GetClientData(i)  
   
             #  
             # this could be the case if they selected <None> or  
             # the currently used projection  
             #  
             if proj is not None and projfile is not None:  
                 projfile.Remove(proj)  
366    
367          try:          if modified:
368              write_proj_file(projfile)              self.write_proj_file(self.__usrProjFile)
         except IOError, (errno, errstr):  
             self.__ShowError(projfile.GetFilename(), errstr)  
369    
370          self.__FillAvailList()      def _OnShowEPSG(self, event):
371            """Handler for the EVT_CHECKBOX events from the EPSG check button
372    
373          #          If the button is checked add the EPSG_PROJ_FILE to the list of
374          # this *could* produce incorrect results if the .proj files          projfiles shown by the projection list. Otherwise remove it
375          # change between the last list update and this selection          """
376          # because the list has been repopulated.          proj_files = [self.load_user_proj(),
377          #                        self.load_system_proj(DEFAULT_PROJ_FILE)]
378          if newselection != -1 and self.availprojs.GetCount() > 0:          if self.check_epsg.IsChecked():
379              self.availprojs.SetSelection(newselection)              proj_files.append(self.load_system_proj(EPSG_PROJ_FILE))
380            if self.check_epsg_depr.IsChecked():
381          self.__VerifyButtons()              proj_files.append(self.load_system_proj(EPSG_DEPRECATED_PROJ_FILE))
382            self.projection_list.SetProjFiles(proj_files)
383    
384      def _OnProjName(self, event):      def _OnProjName(self, event):
385          self.__VerifyButtons()          self.__VerifyButtons()
386    
387      def __ShowError(self, filename, errstr):      def __ShowError(self, filename, errstr):
388          wxMessageDialog(self,          wxMessageDialog(self,
389              _("The following error occured:\n") +              _("The following error occured:\n") +
390              filename + "\n" + errstr,              filename + "\n" + errstr,
391              _("Error"), wxOK | wxICON_ERROR).ShowModal()              _("Error"), wxOK | wxICON_ERROR).ShowModal()
392    
393      def __VerifyButtons(self):      def __VerifyButtons(self):
394          """Enable or disable the appropriate buttons based on the          """Update button sensitivity"""
         current state of the dialog.  
         """  
395    
396          sel = self.availprojs.GetSelections()          num_sel = self.projection_list.GetSelectedItemCount()
397    
398          self.button_import.Enable(True)          self.button_import.Enable(True)
399          self.button_export.Enable(True)          self.button_export.Enable(True)
# Line 391  class ProjFrame(NonModalNonParentDialog) Line 415  class ProjFrame(NonModalNonParentDialog)
415          if self.curProjPanel is not None:          if self.curProjPanel is not None:
416              self.curProjPanel.Enable(True)              self.curProjPanel.Enable(True)
417    
418          if len(sel) == 0:          if num_sel == 0:
419              self.button_import.Enable(True)              self.button_import.Enable(True)
420              self.button_export.Enable(False)              self.button_export.Enable(False)
421              self.button_remove.Enable(False)              self.button_remove.Enable(False)
422              self.button_save.Enable(False)              self.button_save.Enable(False)
423    
424          elif len(sel) == 1:          elif num_sel == 1:
425    
426              proj, projFile = self.availprojs.GetClientData(sel[0])              selection = self.projection_list.selected_projections()
427                proj, projFile = selection[0]
428    
429              self.button_save.Enable(len(self.projname.GetValue()) > 0)              self.button_save.Enable(len(self.projname.GetValue()) > 0)
430              self.button_add.Enable(len(self.projname.GetValue()) > 0)              self.button_add.Enable(len(self.projname.GetValue()) > 0)
# Line 426  class ProjFrame(NonModalNonParentDialog) Line 451  class ProjFrame(NonModalNonParentDialog)
451          else:          else:
452              self.edit_box.Enable(False)              self.edit_box.Enable(False)
453    
454      def __DoOnProjAvail(self):      def proj_selection_changed(self, projs):
455            """Subscribed to the projection_list's PROJ_SELECTION_CHANGED message
         sel = self.availprojs.GetSelections()  
         if len(sel) == 1:  
   
             proj = self.availprojs.GetClientData(sel[0])[CLIENT_PROJ]  
             projfile = self.availprojs.GetClientData(sel[0])[CLIENT_PROJFILE]  
456    
457            Update the dialog to reflect the new selection.
458            """
459            if len(projs) == 0:
460                self.projfilepath.SetLabel(_("No Projections selected"))
461            elif len(projs) == 1:
462                proj, projfile = projs[0]
463              if proj is None:              if proj is None:
464                  # user selected <None>                  # user selected <None>
465                  self.projname.Clear()                  self.projname.Clear()
466                  self.projfilepath.SetLabel(_("Projection File: "))                  self.projfilepath.SetLabel("")
467              else:              else:
               
468                  if projfile is not None:                  if projfile is not None:
469                      self.projfilepath.SetLabel(_("Projection File: ") +                      filename = os.path.basename(projfile.GetFilename())
470                          os.path.basename(projfile.GetFilename()))                      self.projfilepath.SetLabel(_("Source of Projection: %s")
471                                                   % filename)
472                  else:                  else:
473                      # only None if the currently used projection is selected                      # only None if the currently used projection is selected
474                      self.projfilepath.SetLabel(_("Projection File: "))                      self.projfilepath.SetLabel("")
475    
476                  self.projname.SetValue(proj.GetName())                  self.projname.SetValue(proj.Label())
477    
478                  myProjType = proj.GetParameter("proj")                  myProjType = proj.GetParameter("proj")
479                  i = 0                  i = 0
480                  for projType, name, clazz in self.projection_panels:                  for projType, name, cls in self.projection_panel_defs:
481                      if myProjType == projType:                      if myProjType == projType:
482                          self.projchoice.Enable(True)                          self.projchoice.Enable(True)
483                          self.projchoice.SetSelection(i)                          self.projchoice.SetSelection(i + 1)
484                          self.__DoOnProjChoice()                          self.__DoOnProjChoice()
485    
486                          #                          #
# Line 467  class ProjFrame(NonModalNonParentDialog) Line 493  class ProjFrame(NonModalNonParentDialog)
493                          break                          break
494                      i += 1                      i += 1
495                  else:                  else:
496                        self.projchoice.Select(0)
497                      self.projchoice.Disable()                      self.projchoice.Disable()
498                      self._show_proj_panel(UnknownProjPanel(self,                      self._show_proj_panel(UnknownProjPanel)
499                                                             self.receiver))                      assert self.curProjPanel is not None
500                        self.curProjPanel.SetProjection(proj)
501            else:
502                self.projfilepath.SetLabel(_("Multiple Projections selected"))
503    
504          self.__VerifyButtons()          self.__VerifyButtons()
505    
# Line 490  class ProjFrame(NonModalNonParentDialog) Line 520  class ProjFrame(NonModalNonParentDialog)
520    
521          sel = choice.GetSelection()          sel = choice.GetSelection()
522          if sel != -1:          if sel != -1:
523              clazz, obj = choice.GetClientData(sel)              proj_type = choice.GetClientData(sel)
524              if obj is None:              for t, name, cls in self.projection_panel_defs:
525                  obj = clazz(self, self.receiver)                  if t == proj_type:
526                  choice.SetClientData(sel, [clazz, obj])                      self._show_proj_panel(cls)
527              self._show_proj_panel(obj)                      break
528            # FIXME: what to do if sel == -1?
529    
530      def _show_proj_panel(self, panel):      def _show_proj_panel(self, panel_class):
531          """Show the panel as the projection panel"""          """Show the panel as the projection panel"""
532          if self.curProjPanel is not None:          if panel_class is UnknownProjPanel:
533              self.curProjPanel.Hide()              self.button_ok.Disable()
534              self.sizer_projctrls.Remove(self.curProjPanel)              self.button_try.Disable()
535                self.edit_box.Disable()
536          self.curProjPanel = panel              self.nbsizer.Activate(self.unknown_projection_panel)
537          self.curProjPanel.Show()              self.curProjPanel = self.unknown_projection_panel
538            else:
539          self.sizer_projctrls.Add(self.curProjPanel, 1,              self.button_ok.Enable(True)
540              wxALL|wxEXPAND|wxADJUST_MINSIZE, 3)              self.button_try.Enable(True)
541          self.sizer_projctrls.Layout()              self.edit_box.Enable(True)
542          self.Layout()              self.unknown_projection_panel.Hide()
543          self.topBox.SetSizeHints(self)              for panel in self.projection_panels:
544                    if panel.__class__ is panel_class:
545                        self.nbsizer.Activate(panel)
546                        self.curProjPanel = panel
547    
548      def __SetProjection(self):      def __SetProjection(self):
549          """Set the receiver's projection."""          """Set the receiver's projection."""
# Line 527  class ProjFrame(NonModalNonParentDialog) Line 561  class ProjFrame(NonModalNonParentDialog)
561          Could be None.          Could be None.
562          """          """
563    
564          sel = self.availprojs.GetSelections()          assert self.projection_list.GetSelectedItemCount() < 2, \
565          assert len(sel) < 2, "button should be disabled"                 "button should be disabled"
   
566    
567            sel = self.projection_list.selected_projections()
568          if len(sel) == 1:          if len(sel) == 1:
569              proj = self.availprojs.GetClientData(sel[0])[CLIENT_PROJ]              if sel[0][0] is None:
             if proj is None:  
570                  # <None> is selected                  # <None> is selected
571                  return None                  return None
572    
573          #          # self.curProjPanel should always contain the most relevant data
574          # self.curProjPanel should always contain the most          # for a projection
         # relevant data for a projection  
         #  
575          if self.curProjPanel is not None:          if self.curProjPanel is not None:
576              return Projection(self.curProjPanel.GetParameters(),              parameters = self.curProjPanel.GetParameters()
577                                self.projname.GetValue())              if parameters is not None:
578                    return Projection(parameters, self.projname.GetValue())
579    
580          return None          return None
581    
582      def __FillAvailList(self, selectCurrent = False, selectProj = None):      def load_user_proj(self):
583          """Populate the list of available projections.          """Return the user's ProjFile
           
         selectCurrent -- if True, select the projection used by  
                          the receiver, otherwise select nothing.  
         selectProj    -- if set, select the projection found under the  
                          specified name. This overwrites any other  
                          selection estimate.  
         """  
584    
585          self.availprojs.Clear()          If the file has not yet been loaded by the dialog, load it first
586            with get_user_proj_file and cache it in self.__usrProjFile.
587    
588          #          Show a busy cursor while loading the file.
589          # the list can never be empty. there will always be      
590          # at least this one item          If the file is not available, leave a note to the console.
591          #          """
592          self.availprojs.Append("<None>", (None, None))          if self.__usrProjFile is None:
593                ThubanBeginBusyCursor()
594                try:
595                    projfile, warnings = get_user_proj_file()
596                    if warnings:
597                        sys.stderr.write("".join(warnings))
598                    self.__usrProjFile = projfile
599                finally:
600                    ThubanEndBusyCursor()
601            return self.__usrProjFile
602    
603        def load_system_proj(self, name):
604            """Load the system ProjFile with the given name.
605    
606            If the file has not been loaded yet, load it first with
607            get_system_proj_file and put it into the cache. The name is
608            simply forwarded to get_system_proj_file.
609    
610          projfile, warnings = get_system_proj_file()          Show a busy cursor while loading the file.
611          self.show_warnings(_("Warnings"), projfile.GetFilename(), warnings)          """
612          for proj in projfile.GetProjections():          if name not in self._sys_proj_files:
613              self.availprojs.Append(proj.GetName(), [proj, projfile])              ThubanBeginBusyCursor()
614          self.__sysProjFile = projfile              try:
615                    projfile, warnings = get_system_proj_file(name)
616                    self.show_warnings(_("Warnings"), projfile.GetFilename(),
617                                       warnings)
618                    self._sys_proj_files[name] = projfile
619                finally:
620                    ThubanEndBusyCursor()
621            return self._sys_proj_files[name]
622    
623          projfile, warnings = get_user_proj_file()      def write_proj_file(self, proj_file):
624          self.show_warnings(_("Warnings"), projfile.GetFilename(), warnings)          """Write the ProjFile object proj_file back to its file
625          for proj in projfile.GetProjections():  
626              self.availprojs.Append(proj.GetName(), [proj, projfile])          Show a busy cursor while writing and if an error occurs show a
627          self.__usrProjFile = projfile          dialog with the error message.
628            """
629            try:
630                ThubanBeginBusyCursor()
631                try:
632                    write_proj_file(proj_file)
633                finally:
634                    ThubanEndBusyCursor()
635            except IOError, (errno, errstr):
636                self.__ShowError(proj_file.GetFilename(), errstr)
637    
         #  
         # We add the current projection to the list at last.  
         # Since the list is resorted immediately a following FindString()  
         # determines the index correctly.  
         #  
         proj = self.receiver.GetProjection()  
         if proj is not None:  
             proj_item = _("%s (current)") % proj.GetName()  
             self.availprojs.Append(proj_item, [proj, None])  
             if selectCurrent:  
                 self.availprojs.SetSelection(  
                         self.availprojs.FindString(proj_item)  
                     )  
         else:  
             if selectCurrent:  
                 self.availprojs.SetSelection(  
                         self.availprojs.FindString("<None>")  
                     )  
         if selectProj:  
             self.availprojs.SetSelection(  
                         self.availprojs.FindString(selectProj)  
                     )  
638    
639    
640  class ProjPanel(wxPanel):  class ProjPanel(wxPanel):
# Line 608  class ProjPanel(wxPanel): Line 644  class ProjPanel(wxPanel):
644          wxPanel.__init__(self, parent, -1)          wxPanel.__init__(self, parent, -1)
645    
646          self.__ellps = wxChoice(self, -1)          self.__ellps = wxChoice(self, -1)
647          self.ellpsData = [("airy"  , _("Airy")),          self.ellpsData = [("", _("<Unknown>")),
648                              ("airy"  , _("Airy")),
649                            ("bessel", _("Bessel 1841")),                            ("bessel", _("Bessel 1841")),
650                            ("clrk66", _("Clarke 1866")),                            ("clrk66", _("Clarke 1866")),
651                            ("clrk80", _("Clarke 1880")),                            ("clrk80", _("Clarke 1880")),
652                            ("GRS80" , _("GRS 1980 (IUGG, 1980)")),                            ("GRS80" , _("GRS 1980 (IUGG, 1980)")),
653                            ("intl"  , _("International 1909 (Hayford)")),                            ("intl"  , _("International 1909 (Hayford)")),
# Line 656  class ProjPanel(wxPanel): Line 693  class ProjPanel(wxPanel):
693          self.__ellps.SetSelection(0)          self.__ellps.SetSelection(0)
694    
695      def GetParameters(self):      def GetParameters(self):
696          return ["ellps=" + self.__ellps.GetClientData(          ellps = self.__ellps.GetSelection()
697                                          self.__ellps.GetSelection())]          if ellps > 0:
698                return ["ellps=" + self.__ellps.GetClientData(ellps)]
699            return []
700    
701    
702  ID_TMPANEL_LAT = 4001  ID_TMPANEL_LAT = 4001
# Line 673  class UnknownProjPanel(ProjPanel): Line 712  class UnknownProjPanel(ProjPanel):
712      def __init__(self, parent, receiver):      def __init__(self, parent, receiver):
713          ProjPanel.__init__(self, parent)          ProjPanel.__init__(self, parent)
714    
715            self.__text = _("Thuban does not know the parameters\n"
716                            "for the current projection and cannot\n"
717                            "display a configuration panel.\n\n"
718                            "The unidentified set of parameters is:\n\n")
719    
720            self.__textbox = wxTextCtrl(self, -1, self.__text, size=(100,200),
721                                style=wxTE_READONLY|wxTE_MULTILINE|wxTE_LINEWRAP)
722          self._DoLayout()          self._DoLayout()
723    
724      def _DoLayout(self):      def _DoLayout(self):
725          sizer = wxBoxSizer(wxVERTICAL)          sizer = wxBoxSizer(wxVERTICAL)
726    
727          sizer.Add(wxStaticText(self, -1,          sizer.Add(self.__textbox, 0, wxALL|wxEXPAND, 4)
                                _("Thuban does not know the parameters for the"  
                                  " current projection\n"  
                                  "and cannot display a configuration panel.")))  
728    
729          ProjPanel._DoLayout(self, sizer)          ProjPanel._DoLayout(self, sizer)
730    
# Line 689  class UnknownProjPanel(ProjPanel): Line 732  class UnknownProjPanel(ProjPanel):
732          return "Unknown"          return "Unknown"
733    
734      def SetProjection(self, proj):      def SetProjection(self, proj):
735          pass          """Append the available parameters to the info text."""
736            text = self.__text
737            for param in proj.GetAllParameters():
738                text = text + '%s\n' % param
739            self.__textbox.SetValue(text)
740    
741      def GetParameters(self):      def GetParameters(self):
742          return None          return None
# Line 702  class TMPanel(ProjPanel): Line 749  class TMPanel(ProjPanel):
749    
750          self.__latitude = wxTextCtrl(self, ID_TMPANEL_LAT)          self.__latitude = wxTextCtrl(self, ID_TMPANEL_LAT)
751          self.__longitude = wxTextCtrl(self, ID_TMPANEL_LONG)          self.__longitude = wxTextCtrl(self, ID_TMPANEL_LONG)
         self.__scale = wxTextCtrl(self, ID_TMPANEL_SCALE)  
752          self.__falseEast = wxTextCtrl(self, ID_TMPANEL_FASLE_EAST)          self.__falseEast = wxTextCtrl(self, ID_TMPANEL_FASLE_EAST)
753          self.__falseNorth = wxTextCtrl(self, ID_TMPANEL_FALSE_NORTH)          self.__falseNorth = wxTextCtrl(self, ID_TMPANEL_FALSE_NORTH)
754            self.__scale = wxTextCtrl(self, ID_TMPANEL_SCALE)
755    
756          self._DoLayout()          self._DoLayout()
757    
758      def _DoLayout(self):      def _DoLayout(self):
759    
760          sizer = wxFlexGridSizer(4, 4, 0, 0)          sizer = wxFlexGridSizer(4, 2, 0, 0)
761          sizer.Add(wxStaticText(self, -1, _("Latitude:")), 0, wxALL, 4)          sizer.Add(wxStaticText(self, -1, _("Latitude:")), 0, wxALL, 4)
762          sizer.Add(self.__latitude, 0, wxALL, 4)          sizer.Add(self.__latitude, 0, wxALL, 4)
         sizer.Add(wxStaticText(self, -1, _("False Easting:")), 0, wxALL, 4)  
         sizer.Add(self.__falseEast, 0, wxALL, 4)  
763          sizer.Add(wxStaticText(self, -1, _("Longitude:")), 0, wxALL, 4)          sizer.Add(wxStaticText(self, -1, _("Longitude:")), 0, wxALL, 4)
764          sizer.Add(self.__longitude, 0, wxALL, 4)          sizer.Add(self.__longitude, 0, wxALL, 4)
765            sizer.Add(wxStaticText(self, -1, _("False Easting:")), 0, wxALL, 4)
766            sizer.Add(self.__falseEast, 0, wxALL, 4)
767          sizer.Add(wxStaticText(self, -1, _("False Northing:")), 0, wxALL, 4)          sizer.Add(wxStaticText(self, -1, _("False Northing:")), 0, wxALL, 4)
768          sizer.Add(self.__falseNorth, 0, wxALL, 4)          sizer.Add(self.__falseNorth, 0, wxALL, 4)
769          sizer.Add(wxStaticText(self, -1, _("Scale Factor:")), 0, wxALL, 4)          sizer.Add(wxStaticText(self, -1, _("Scale Factor:")), 0, wxALL, 4)
# Line 839  class LCCPanel(ProjPanel): Line 886  class LCCPanel(ProjPanel):
886                    
887          self.__fspLatitude = wxTextCtrl(self, -1)          self.__fspLatitude = wxTextCtrl(self, -1)
888          self.__sspLatitude = wxTextCtrl(self, -1)          self.__sspLatitude = wxTextCtrl(self, -1)
         self.__originLat   = wxTextCtrl(self, -1)  
889          self.__meridian    = wxTextCtrl(self, -1)          self.__meridian    = wxTextCtrl(self, -1)
890            self.__originLat   = wxTextCtrl(self, -1)
891          self.__falseEast   = wxTextCtrl(self, -1)          self.__falseEast   = wxTextCtrl(self, -1)
892          self.__falseNorth  = wxTextCtrl(self, -1)          self.__falseNorth  = wxTextCtrl(self, -1)
893    
Legend:
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