/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/tableview.py
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revision 1146 by bh, Tue Jun 10 12:00:16 2003 UTC revision 2032 by bh, Mon Dec 22 14:54:47 2003 UTC
# Line 17  from wxPython.grid import * Line 17  from wxPython.grid import *
17  from Thuban.Lib.connector import Publisher  from Thuban.Lib.connector import Publisher
18  from Thuban.Model.table import FIELDTYPE_INT, FIELDTYPE_DOUBLE, \  from Thuban.Model.table import FIELDTYPE_INT, FIELDTYPE_DOUBLE, \
19       FIELDTYPE_STRING, table_to_dbf, table_to_csv       FIELDTYPE_STRING, table_to_dbf, table_to_csv
20  import view  from dialogs import ThubanFrame
 from dialogs import NonModalNonParentDialog  
21    
22  from messages import SHAPES_SELECTED, SESSION_REPLACED  from messages import SHAPES_SELECTED, SESSION_REPLACED
23  from Thuban.Model.messages import TABLE_REMOVED, MAP_LAYERS_REMOVED  from Thuban.Model.messages import TABLE_REMOVED, MAP_LAYERS_REMOVED
24    from Thuban.UI.common import ThubanBeginBusyCursor, ThubanEndBusyCursor
25    
26  wx_value_type_map = {FIELDTYPE_INT: wxGRID_VALUE_NUMBER,  wx_value_type_map = {FIELDTYPE_INT: wxGRID_VALUE_NUMBER,
27                       FIELDTYPE_DOUBLE: wxGRID_VALUE_FLOAT,                       FIELDTYPE_DOUBLE: wxGRID_VALUE_FLOAT,
# Line 71  class DataTable(wxPyGridTableBase): Line 71  class DataTable(wxPyGridTableBase):
71      # Renderer understands the type too,) not just strings as in the      # Renderer understands the type too,) not just strings as in the
72      # C++ version.      # C++ version.
73      def GetValue(self, row, col):      def GetValue(self, row, col):
74          record = self.table.ReadRowAsDict(row)          record = self.table.ReadRowAsDict(row, row_is_ordinal = 1)
75          return record[self.columns[col][0]]          return record[self.columns[col][0]]
76    
77      def SetValue(self, row, col, value):      def SetValue(self, row, col, value):
# Line 102  class DataTable(wxPyGridTableBase): Line 102  class DataTable(wxPyGridTableBase):
102          return self.CanGetValueAs(row, col, typeName)          return self.CanGetValueAs(row, col, typeName)
103    
104    
105        #
106        def RowIdToOrdinal(self, rowid):
107            """Return the ordinal of the row given by its id"""
108            return self.table.RowIdToOrdinal(rowid)
109    
110        def RowOrdinalToId(self, ordinal):
111            """Return the id of the row given by its ordinal"""
112            return self.table.RowOrdinalToId(ordinal)
113    
114    
115  class NullRenderer(wxPyGridCellRenderer):  class NullRenderer(wxPyGridCellRenderer):
116    
# Line 150  class TableGrid(wxGrid, Publisher): Line 159  class TableGrid(wxGrid, Publisher):
159    
160          self.allow_messages_count = 0          self.allow_messages_count = 0
161    
162            # keep track of which rows are selected.
163            self.rows = {}
164    
165          self.table = DataTable(table)          self.table = DataTable(table)
166    
167          # The second parameter means that the grid is to take ownership          # The second parameter means that the grid is to take ownership
# Line 169  class TableGrid(wxGrid, Publisher): Line 181  class TableGrid(wxGrid, Publisher):
181          self.SetSelectionMode(wxGrid.wxGridSelectRows)          self.SetSelectionMode(wxGrid.wxGridSelectRows)
182    
183          self.ToggleEventListeners(True)          self.ToggleEventListeners(True)
184            EVT_GRID_RANGE_SELECT(self, self.OnRangeSelect)
185            EVT_GRID_SELECT_CELL(self, self.OnSelectCell)
186    
187          # Replace the normal renderers with our own versions which          # Replace the normal renderers with our own versions which
188          # render NULL/None values specially          # render NULL/None values specially
# Line 179  class TableGrid(wxGrid, Publisher): Line 193  class TableGrid(wxGrid, Publisher):
193          self.RegisterDataType(wxGRID_VALUE_FLOAT,          self.RegisterDataType(wxGRID_VALUE_FLOAT,
194                                NullRenderer(wxGridCellFloatRenderer()), None)                                NullRenderer(wxGridCellFloatRenderer()), None)
195    
196            EVT_WINDOW_DESTROY(self, self.OnDestroy)
197    
198        def OnDestroy(self, event):
199            Publisher.Destroy(self)
200    
201      def SetTableObject(self, table):      def SetTableObject(self, table):
202          self.table.SetTable(table)          self.table.SetTable(table)
203    
204      def OnRangeSelect(self, event):      def OnRangeSelect(self, event):
205          rows = dict([(i, 0) for i in self.GetSelectedRows()])          to_id = self.table.RowOrdinalToId
206            if self.handleSelectEvents:
207                self.rows = dict([(to_id(i), 0) for i in self.GetSelectedRows()])
208    
209                # if we're selecting we need to include the selected range and
210                # make sure that the current row is also included, which may
211                # not be the case if you just click on a single row!
212                if event.Selecting():
213                    for i in range(event.GetTopRow(), event.GetBottomRow() + 1):
214                        self.rows[to_id(i)] = 0
215                    self.rows[to_id(event.GetTopLeftCoords().GetRow())] = 0
216    
217          # if we're selecting we need to include the selected range and              self.issue(ROW_SELECTED, self.rows.keys())
         # make sure that the current row is also included, which may  
         # not be the case if you just click on a single row!  
         if event.Selecting():  
             for i in range(event.GetTopRow(), event.GetBottomRow() + 1):  
                 rows[i] = 0  
             rows[event.GetTopLeftCoords().GetRow()] = 0  
218    
         self.issue(ROW_SELECTED, rows.keys())  
219          event.Skip()          event.Skip()
220    
221      def OnSelectCell(self, event):      def OnSelectCell(self, event):
222          self.issue(ROW_SELECTED, self.GetSelectedRows())          to_id = self.table.RowOrdinalToId
223            if self.handleSelectEvents:
224                self.issue(ROW_SELECTED,
225                           [to_id(i) for i in self.GetSelectedRows()])
226          event.Skip()          event.Skip()
227    
228      def ToggleEventListeners(self, on):      def ToggleEventListeners(self, on):
229          if on:          self.handleSelectEvents = on
230              EVT_GRID_RANGE_SELECT(self, self.OnRangeSelect)  
231              EVT_GRID_SELECT_CELL(self, self.OnSelectCell)      def GetNumberSelected(self):
232          else:          return len(self.rows)
233              EVT_GRID_RANGE_SELECT(self, None)  
             EVT_GRID_SELECT_CELL(self, None)  
               
234      def disallow_messages(self):      def disallow_messages(self):
235          """Disallow messages to be send.          """Disallow messages to be send.
236    
# Line 234  class TableGrid(wxGrid, Publisher): Line 257  class TableGrid(wxGrid, Publisher):
257          if self.allow_messages_count == 0:          if self.allow_messages_count == 0:
258              Publisher.issue(self, *args)              Publisher.issue(self, *args)
259    
260        def SelectRowById(self, rowid, do_select):
261            """Select row with the id rowid"""
262            self.SelectRow(self.table.RowIdToOrdinal(rowid), do_select)
263    
264    
265  class LayerTableGrid(TableGrid):  class LayerTableGrid(TableGrid):
266    
# Line 250  class LayerTableGrid(TableGrid): Line 277  class LayerTableGrid(TableGrid):
277          nothing. If shape or layer is None also do nothing.          nothing. If shape or layer is None also do nothing.
278          """          """
279          if layer is not None \          if layer is not None \
280              and layer.table is self.table.table:              and layer.ShapeStore().Table() is self.table.table:
281    
282              self.disallow_messages()              self.disallow_messages()
283              try:              try:
284                  self.ClearSelection()                  self.ClearSelection()
285                  if len(shapes) > 0:                  if len(shapes) > 0:
286                      #                      # keep track of the lowest id so we can make it the
287                      # keep track of the lowest id so we can make it                      # first visible item
288                      # the first visible item                      first = -1
                     #  
                     first = shapes[0]  
289    
290                        to_ordinal = self.table.RowIdToOrdinal
291                      for shape in shapes:                      for shape in shapes:
292                          self.SelectRow(shape, True)                          row = to_ordinal(shape)
293                          if shape < first:                          self.SelectRow(row, True)
294                              first = shape                          if row < first:
295                                first = row
296    
297                      self.SetGridCursor(first, 0)                      self.SetGridCursor(first, 0)
298                      self.MakeCellVisible(first, 0)                      self.MakeCellVisible(first, 0)
# Line 273  class LayerTableGrid(TableGrid): Line 300  class LayerTableGrid(TableGrid):
300                  self.allow_messages()                  self.allow_messages()
301    
302    
303  class TableFrame(NonModalNonParentDialog):  class TableFrame(ThubanFrame):
304    
305      """Frame that displays a Thuban table in a grid view"""      """Frame that displays a Thuban table in a grid view"""
306    
307      def __init__(self, parent, name, title, table):      def __init__(self, parent, name, title, table):
308          NonModalNonParentDialog.__init__(self, parent, name, title)          ThubanFrame.__init__(self, parent, name, title)
309            self.panel = wxPanel(self, -1)
310    
311          self.table = table          self.table = table
312          self.grid = self.make_grid(self.table)          self.grid = self.make_grid(self.table)
313          self.app = self.parent.application          self.app = self.parent.application
# Line 286  class TableFrame(NonModalNonParentDialog Line 315  class TableFrame(NonModalNonParentDialog
315          self.session = self.app.Session()          self.session = self.app.Session()
316          self.session.Subscribe(TABLE_REMOVED, self.close_on_table_removed)          self.session.Subscribe(TABLE_REMOVED, self.close_on_table_removed)
317    
318        def OnDestroy(self, event):
319            """Extend inherited method to unsubscribe messages"""
320            self.app.Unsubscribe(SESSION_REPLACED, self.close_on_session_replaced)
321            self.session.Unsubscribe(TABLE_REMOVED, self.close_on_table_removed)
322            ThubanFrame.OnDestroy(self, event)
323    
324      def make_grid(self, table):      def make_grid(self, table):
325          """Return the table grid to use in the frame.          """Return the table grid to use in the frame.
326    
# Line 294  class TableFrame(NonModalNonParentDialog Line 329  class TableFrame(NonModalNonParentDialog
329          """          """
330          return TableGrid(self, table)          return TableGrid(self, table)
331    
     def OnClose(self, event):  
         self.app.Unsubscribe(SESSION_REPLACED, self.close_on_session_replaced)  
         self.session.Unsubscribe(TABLE_REMOVED, self.close_on_table_removed)  
         NonModalNonParentDialog.OnClose(self, event)  
   
332      def close_on_session_replaced(self, *args):      def close_on_session_replaced(self, *args):
333          """Subscriber for the SESSION_REPLACED messages.          """Subscriber for the SESSION_REPLACED messages.
334    
# Line 319  class TableFrame(NonModalNonParentDialog Line 349  class TableFrame(NonModalNonParentDialog
349    
350  ID_QUERY = 4001  ID_QUERY = 4001
351  ID_EXPORT = 4002  ID_EXPORT = 4002
352    ID_COMBOVALUE = 4003
353    ID_EXPORTSEL = 4004
354    
355  class QueryTableFrame(TableFrame):  class QueryTableFrame(TableFrame):
356    
# Line 332  class QueryTableFrame(TableFrame): Line 364  class QueryTableFrame(TableFrame):
364      def __init__(self, parent, name, title, table):      def __init__(self, parent, name, title, table):
365          TableFrame.__init__(self, parent, name, title, table)          TableFrame.__init__(self, parent, name, title, table)
366    
367          self.combo_fields = wxComboBox(self, -1, style=wxCB_READONLY)          self.combo_fields = wxComboBox(self.panel, -1, style=wxCB_READONLY)
368          self.choice_comp = wxChoice(self, -1,          self.choice_comp = wxChoice(self.panel, -1,
369                                choices=["<", "<=", "==", "!=", ">=", ">"])                                choices=["<", "<=", "==", "!=", ">=", ">"])
370          self.combo_value = wxComboBox(self, -1)          self.combo_value = wxComboBox(self.panel, ID_COMBOVALUE)
371          self.choice_action = wxChoice(self, -1,          self.choice_action = wxChoice(self.panel, -1,
372                                  choices=[_("Replace Selection"),                                  choices=[_("Replace Selection"),
373                                          _("Refine Selection"),                                          _("Refine Selection"),
374                                          _("Add to Selection")])                                          _("Add to Selection")])
375    
376          button_query = wxButton(self, ID_QUERY, _("Query"))          button_query = wxButton(self.panel, ID_QUERY, _("Query"))
377          button_saveas = wxButton(self, ID_EXPORT, _("Export"))          button_export = wxButton(self.panel, ID_EXPORT, _("Export"))
378            button_exportSel = wxButton(self.panel, ID_EXPORTSEL, _("Export Selection"))
379            button_close = wxButton(self.panel, wxID_CLOSE, _("Close"))
380    
381            self.CreateStatusBar()
382    
383          self.grid.SetSize((400, 200))          self.grid.SetSize((400, 200))
384    
# Line 355  class QueryTableFrame(TableFrame): Line 391  class QueryTableFrame(TableFrame):
391          # assume at least one field?          # assume at least one field?
392          self.combo_fields.SetSelection(0)          self.combo_fields.SetSelection(0)
393          self.combo_value.SetSelection(0)          self.combo_value.SetSelection(0)
394            self.choice_action.SetSelection(0)
395            self.choice_comp.SetSelection(0)
396    
397            self.grid.Reparent(self.panel)
398    
399            self.UpdateStatusText()
400    
401          topBox = wxBoxSizer(wxVERTICAL)          topBox = wxBoxSizer(wxVERTICAL)
402    
403          sizer = wxStaticBoxSizer(wxStaticBox(self, -1,          sizer = wxStaticBoxSizer(wxStaticBox(self.panel, -1,
404                                    _("Selection")),                                    _("Selection")),
405                                    wxHORIZONTAL)                                    wxHORIZONTAL)
406          sizer.Add(self.combo_fields, 1, wxEXPAND|wxALL, 4)          sizer.Add(self.combo_fields, 1, wxEXPAND|wxALL, 4)
# Line 367  class QueryTableFrame(TableFrame): Line 409  class QueryTableFrame(TableFrame):
409          sizer.Add(self.choice_action, 0, wxALL, 4)          sizer.Add(self.choice_action, 0, wxALL, 4)
410          sizer.Add(button_query, 0, wxALL | wxALIGN_CENTER_VERTICAL, 4)          sizer.Add(button_query, 0, wxALL | wxALIGN_CENTER_VERTICAL, 4)
411          sizer.Add(40, 20, 0, wxALL, 4)          sizer.Add(40, 20, 0, wxALL, 4)
         sizer.Add(button_saveas, 0, wxALL | wxALIGN_CENTER_VERTICAL, 4)  
412    
413          topBox.Add(sizer, 0, wxEXPAND|wxALL, 4)          topBox.Add(sizer, 0, wxEXPAND|wxALL, 4)
414          topBox.Add(self.grid, 1, wxEXPAND|wxALL, 0)          topBox.Add(self.grid, 1, wxEXPAND|wxALL, 0)
415    
416            sizer = wxBoxSizer(wxHORIZONTAL)
417            sizer.Add(button_export, 0, wxALL, 4)
418            sizer.Add(button_exportSel, 0, wxALL, 4)
419            sizer.Add(60, 20, 1, wxALL|wxEXPAND, 4)
420            sizer.Add(button_close, 0, wxALL|wxALIGN_RIGHT, 4)
421            topBox.Add(sizer, 0, wxALL | wxEXPAND, 4)
422    
423            self.panel.SetAutoLayout(True)
424            self.panel.SetSizer(topBox)
425            topBox.Fit(self.panel)
426            topBox.SetSizeHints(self.panel)
427    
428            panelSizer = wxBoxSizer(wxVERTICAL)
429            panelSizer.Add(self.panel, 1, wxEXPAND, 0)
430          self.SetAutoLayout(True)          self.SetAutoLayout(True)
431          self.SetSizer(topBox)          self.SetSizer(panelSizer)
432          topBox.Fit(self)          panelSizer.Fit(self)
433          topBox.SetSizeHints(self)          panelSizer.SetSizeHints(self)
434    
435          self.grid.SetFocus()          self.grid.SetFocus()
436    
437          EVT_BUTTON(self, ID_QUERY, self.OnQuery)          EVT_BUTTON(self, ID_QUERY, self.OnQuery)
438          EVT_BUTTON(self, ID_EXPORT, self.OnSaveAs)          EVT_BUTTON(self, ID_EXPORT, self.OnExport)
439            EVT_BUTTON(self, ID_EXPORTSEL, self.OnExportSel)
440            EVT_BUTTON(self, wxID_CLOSE, self.OnClose)
441          EVT_KEY_DOWN(self.grid, self.OnKeyDown)          EVT_KEY_DOWN(self.grid, self.OnKeyDown)
442    
443            self.grid.Subscribe(ROW_SELECTED, self.UpdateStatusText)
444    
445        def UpdateStatusText(self, rows=None):
446            self.SetStatusText(_("%i rows (%i selected), %i columns")
447                % (self.grid.GetNumberRows(),
448                   self.grid.GetNumberSelected(),
449                   self.grid.GetNumberCols()))
450    
451      def OnKeyDown(self, event):      def OnKeyDown(self, event):
452          """Catch query key from grid"""          """Catch query key from grid"""
453          if event.AltDown() and event.GetKeyCode() == ord(QUERY_KEY):          if event.AltDown() and event.GetKeyCode() == ord(QUERY_KEY):
# Line 390  class QueryTableFrame(TableFrame): Line 456  class QueryTableFrame(TableFrame):
456          else:          else:
457              event.Skip()              event.Skip()
458    
   
459      def OnQuery(self, event):      def OnQuery(self, event):
460          wxBeginBusyCursor()          ThubanBeginBusyCursor()
461          try:          try:
462    
463              if self.combo_value.GetSelection() < 1:              text = self.combo_value.GetValue()
464                  value = self.combo_value.GetValue()              if self.combo_value.GetSelection() < 1 \
465                    or self.combo_value.FindString(text) == -1:
466                    value = text
467              else:              else:
468                  value = self.table.Column(self.combo_value.GetValue())                  value = self.table.Column(text)
469    
470              ids = self.table.SimpleQuery(              ids = self.table.SimpleQuery(
471                      self.table.Column(self.combo_fields.GetStringSelection()),                      self.table.Column(self.combo_fields.GetStringSelection()),
# Line 418  class QueryTableFrame(TableFrame): Line 485  class QueryTableFrame(TableFrame):
485              # the first element, which causes everything to be              # the first element, which causes everything to be
486              # updated properly.              # updated properly.
487              #              #
488              self.grid.ToggleEventListeners(False)              if ids:
489                    self.grid.ToggleEventListeners(False)
490    
491              if choice == 0:              if choice == 0:
492                  # Replace Selection                  # Replace Selection
# Line 440  class QueryTableFrame(TableFrame): Line 508  class QueryTableFrame(TableFrame):
508                  if firsttime:                  if firsttime:
509                      firsttime = False                      firsttime = False
510                  else:                  else:
511                      self.grid.SelectRow(id, True)                      self.grid.SelectRowById(id, True)
512    
513              self.grid.ToggleEventListeners(True)              self.grid.ToggleEventListeners(True)
514    
# Line 448  class QueryTableFrame(TableFrame): Line 516  class QueryTableFrame(TableFrame):
516              # select the first row              # select the first row
517              #              #
518              if ids:              if ids:
519                  self.grid.SelectRow(ids[0], True)                  self.grid.SelectRowById(ids[0], True)
520    
521          finally:          finally:
522              wxEndBusyCursor()              ThubanEndBusyCursor()
523            
524        def doExport(self, onlySelected):
525                    
     def OnSaveAs(self, event):  
526          dlg = wxFileDialog(self, _("Export Table To"), ".", "",          dlg = wxFileDialog(self, _("Export Table To"), ".", "",
527                             _("DBF Files (*.dbf)|*.dbf|") +                             _("DBF Files (*.dbf)|*.dbf|") +
528                             _("CSV Files (*.csv)|*.csv|") +                             _("CSV Files (*.csv)|*.csv|") +
# Line 462  class QueryTableFrame(TableFrame): Line 532  class QueryTableFrame(TableFrame):
532              filename = dlg.GetPath()              filename = dlg.GetPath()
533              type = os.path.basename(filename).split('.')[-1:][0]              type = os.path.basename(filename).split('.')[-1:][0]
534              dlg.Destroy()              dlg.Destroy()
535    
536                if onlySelected:
537                    records = self.grid.GetSelectedRows()
538                else:
539                    records = None
540    
541              if type.upper() == "DBF":              if type.upper() == "DBF":
542                  table_to_dbf(self.table, filename)                  table_to_dbf(self.table, filename, records)
543              elif type.upper() == 'CSV':              elif type.upper() == 'CSV':
544                  table_to_csv(self.table, filename)                  table_to_csv(self.table, filename, records)
545              else:              else:
546                  dlg = wxMessageDialog(None, "Unsupported format: %s" % type,                  dlg = wxMessageDialog(None, "Unsupported format: %s" % type,
547                                        "Table Export", wxOK|wxICON_WARNING)                                        "Table Export", wxOK|wxICON_WARNING)
# Line 474  class QueryTableFrame(TableFrame): Line 550  class QueryTableFrame(TableFrame):
550          else:          else:
551              dlg.Destroy()              dlg.Destroy()
552    
553        def OnExport(self, event):
554            self.doExport(False)
555    
556        def OnExportSel(self, event):
557            self.doExport(True)
558    
559      def OnClose(self, event):      def OnClose(self, event):
560          TableFrame.OnClose(self, event)          TableFrame.OnClose(self, event)
561    
562      def get_selected(self):      def get_selected(self):
563          """Return a dictionary of the selected rows.          """Return a dictionary of the selected rows.
564            
565          The dictionary has sthe indexes as keys."""          The dictionary has the indexes as keys."""
566          return dict([(i, 0) for i in self.grid.GetSelectedRows()])          to_id = self.table.RowOrdinalToId
567            return dict([(to_id(i), 0) for i in self.grid.GetSelectedRows()])
568    
569    
570  class LayerTableFrame(QueryTableFrame):  class LayerTableFrame(QueryTableFrame):
571    
# Line 503  class LayerTableFrame(QueryTableFrame): Line 587  class LayerTableFrame(QueryTableFrame):
587          # accordingly          # accordingly
588          sel = self.get_selected().keys()          sel = self.get_selected().keys()
589          for i in sel:          for i in sel:
590              self.grid.SelectRow(i, True)              self.grid.SelectRowById(i, True)
591    
592        def OnDestroy(self, event):
593            """Extend inherited method to unsubscribe messages"""
594            # There's no need to unsubscribe from self.grid's messages
595            # because it will get a DESTROY event too (since destroying the
596            # frame basically means that all child windows are also
597            # destroyed) and this it will clear all subscriptions
598            # automatically.  It may even have been destroyed already (this
599            # does happen on w2000 for instance) so calling any of its
600            # methods here would be an error.
601            self.parent.Unsubscribe(SHAPES_SELECTED, self.select_shapes)
602            self.map.Unsubscribe(MAP_LAYERS_REMOVED, self.map_layers_removed)
603            QueryTableFrame.OnDestroy(self, event)
604    
605      def make_grid(self, table):      def make_grid(self, table):
606          """Override the derived method to return a LayerTableGrid.          """Override the derived method to return a LayerTableGrid.
# Line 516  class LayerTableFrame(QueryTableFrame): Line 613  class LayerTableFrame(QueryTableFrame):
613          """          """
614          return dict([(i, 0) for i in self.parent.SelectedShapes()])          return dict([(i, 0) for i in self.parent.SelectedShapes()])
615    
     def OnClose(self, event):  
         """Override the derived method to first unsubscribed."""  
         self.parent.Unsubscribe(SHAPES_SELECTED, self.select_shapes)  
         self.grid.Unsubscribe(ROW_SELECTED, self.rows_selected)  
         self.map.Unsubscribe(MAP_LAYERS_REMOVED, self.map_layers_removed)  
         QueryTableFrame.OnClose(self, event)  
   
616      def select_shapes(self, layer, shapes):      def select_shapes(self, layer, shapes):
617          """Subscribed to the SHAPES_SELECTED message.          """Subscribed to the SHAPES_SELECTED message.
618    
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