/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/classifier.py
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revision 473 by jonathan, Wed Mar 5 18:39:45 2003 UTC revision 1539 by bh, Fri Aug 1 14:27:57 2003 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001 by Intevation GmbH  # Copyright (c) 2001, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]>
4  #  #
# Line 18  from wxPython.wx import * Line 18  from wxPython.wx import *
18  from wxPython.grid import *  from wxPython.grid import *
19    
20  from Thuban import _  from Thuban import _
21  from Thuban.common import *  from Thuban.UI.common import Color2wxColour, wxColour2Color
 from Thuban.UI.common import *  
22    
23  from Thuban.Model.classification import *  from Thuban.Model.messages import MAP_LAYERS_REMOVED, LAYER_SHAPESTORE_REPLACED
24    from Thuban.Model.range import Range
25    from Thuban.Model.classification import \
26        Classification, ClassGroupDefault, \
27        ClassGroupSingleton, ClassGroupRange, ClassGroupMap, \
28        ClassGroupProperties
29    
30  from Thuban.Model.color import Color  from Thuban.Model.color import Transparent
31    
32  from Thuban.Model.layer import Layer, SHAPETYPE_ARC, SHAPETYPE_POLYGON, SHAPETYPE_POINT  from Thuban.Model.layer import Layer, RasterLayer
33    from Thuban.Model.data import SHAPETYPE_ARC, SHAPETYPE_POLYGON, SHAPETYPE_POINT
34    
35    from Thuban.UI.classgen import ClassGenDialog
36    
37    from dialogs import NonModalNonParentDialog
38    from messages import MAP_REPLACED
39    
 # widget id's  
 ID_PROPERTY_SELECT = 4010  
40  ID_CLASS_TABLE = 40011  ID_CLASS_TABLE = 40011
41    
 ID_CLASSIFY_OK = 4001  
 ID_CLASSIFY_CANCEL = 4002  
 ID_CLASSIFY_ADD = 4003  
 ID_CLASSIFY_GENRANGE = 4004  
 ID_CLASSIFY_REMOVE = 4005  
 ID_CLASSIFY_MOVEUP = 4006  
 ID_CLASSIFY_MOVEDOWN = 4007  
42    
43  # table columns  # table columns
44  COL_SYMBOL = 0  COL_VISIBLE = 0
45  COL_VALUE  = 1  COL_SYMBOL  = 1
46  COL_LABEL  = 2  COL_VALUE   = 2
47    COL_LABEL   = 3
48    NUM_COLS    = 4
49    
50  # indices into the client data lists in Classifier.fields  # indices into the client data lists in Classifier.fields
51  FIELD_CLASS = 0  FIELD_CLASS = 0
# Line 56  FIELD_NAME = 2 Line 59  FIELD_NAME = 2
59  import weakref  import weakref
60  class ClassGrid(wxGrid):  class ClassGrid(wxGrid):
61    
62      def __init__(self, parent):  
63        def __init__(self, parent, classifier):
64          """Constructor.          """Constructor.
65    
66          parent -- the parent window          parent -- the parent window
# Line 65  class ClassGrid(wxGrid): Line 69  class ClassGrid(wxGrid):
69                   use for display.                   use for display.
70          """          """
71    
72          wxGrid.__init__(self, parent, ID_CLASS_TABLE, size = (340, 160))          wxGrid.__init__(self, parent, ID_CLASS_TABLE, style = 0)
73          #self.SetTable(ClassTable(fieldData, layer.ShapeType(), self), true)  
74          self.SetSelectionMode(wxGrid.wxGridSelectRows)          self.classifier = classifier
75    
76            self.currentSelection = []
77    
78          EVT_GRID_CELL_LEFT_DCLICK(self, self._OnCellDClick)          EVT_GRID_CELL_LEFT_DCLICK(self, self._OnCellDClick)
79          EVT_GRID_RANGE_SELECT(self, self._OnSelectedRange)          EVT_GRID_RANGE_SELECT(self, self._OnSelectedRange)
80          EVT_GRID_SELECT_CELL(self, self._OnSelectedCell)          EVT_GRID_SELECT_CELL(self, self._OnSelectedCell)
81            EVT_GRID_COL_SIZE(self, self._OnCellResize)
82            EVT_GRID_ROW_SIZE(self, self._OnCellResize)
83    
84          self.currentSelection = []      #def GetCellAttr(self, row, col):
85            #print "GetCellAttr ", row, col
86            #wxGrid.GetCellAttr(self, row, col)
87    
88      def CreateTable(self, clazz, shapeType):      def CreateTable(self, clazz, fieldType, shapeType, group = None):
89    
90          assert(isinstance(clazz, Classification))          assert isinstance(clazz, Classification)
91    
         self.shapeType = shapeType  
92          table = self.GetTable()          table = self.GetTable()
93          if table is None:          if table is None:
94              self.SetTable(ClassTable(clazz, self.shapeType, self), true)              w = self.GetDefaultColSize() * NUM_COLS \
95          else:                  + self.GetDefaultRowLabelSize()
96              table.Reset(clazz, self.shapeType)              h = self.GetDefaultRowSize() * 4 \
97                    + self.GetDefaultColLabelSize()
98    
99                self.SetDimensions(-1, -1, w, h)
100                self.SetSizeHints(w, h, -1, -1)
101                table = ClassTable(self)
102                self.SetTable(table, True)
103    
104    
105            self.SetSelectionMode(wxGrid.wxGridSelectRows)
106          self.ClearSelection()          self.ClearSelection()
107    
108            table.Reset(clazz, fieldType, shapeType, group)
109    
110      def GetCurrentSelection(self):      def GetCurrentSelection(self):
111          """Return the currently highlighted rows as an increasing list          """Return the currently highlighted rows as an increasing list
112             of row numbers."""             of row numbers."""
# Line 95  class ClassGrid(wxGrid): Line 114  class ClassGrid(wxGrid):
114          sel.sort()          sel.sort()
115          return sel          return sel
116    
117      def SetCellRenderer(self, row, col):      def GetSelectedRows(self):
118          raise ValueError(_("Must not allow setting of renderer in ClassGrid!"))          return self.GetCurrentSelection()
119    
120        #def SetCellRenderer(self, row, col, renderer):
121            #raise ValueError(_("Must not allow setting of renderer in ClassGrid!"))
122    
123      #      #
124      # [Set|Get]Table is taken from http://wiki.wxpython.org      # [Set|Get]Table is taken from http://wiki.wxpython.org
# Line 128  class ClassGrid(wxGrid): Line 150  class ClassGrid(wxGrid):
150          # if only one thing is selected check if it is the default          # if only one thing is selected check if it is the default
151          # data row, because we can't remove that          # data row, because we can't remove that
152          if len(sel) == 1:          if len(sel) == 1:
153              group = self.GetTable().GetValueAsCustom(sel[0], COL_SYMBOL, None)              #group = self.GetTable().GetValueAsCustom(sel[0], COL_SYMBOL, None)
154                group = self.GetTable().GetClassGroup(sel[0])
155              if isinstance(group, ClassGroupDefault):              if isinstance(group, ClassGroupDefault):
156                  wxMessageDialog(self,                  wxMessageDialog(self,
157                                  "The Default group cannot be removed.",                                  "The Default group cannot be removed.",
# Line 160  class ClassGrid(wxGrid): Line 183  class ClassGrid(wxGrid):
183                  r = self.GetNumberRows() - 1                  r = self.GetNumberRows() - 1
184              self.SelectRow(r)              self.SelectRow(r)
185                    
186    
187        def SelectGroup(self, group, makeVisible = True):
188            if group is None: return
189    
190            assert isinstance(group, ClassGroup)
191    
192            table = self.GetTable()
193    
194            assert table is not None
195    
196            for i in range(table.GetNumberRows()):
197                g = table.GetClassGroup(i)
198                if g is group:
199                    self.SelectRow(i)
200                    if makeVisible:
201                        self.MakeCellVisible(i, 0)
202                    break
203    
204  #  #
205  # XXX: This isn't working, and there is no way to deselect rows wxPython!  # XXX: This isn't working, and there is no way to deselect rows wxPython!
206  #  #
# Line 172  class ClassGrid(wxGrid): Line 213  class ClassGrid(wxGrid):
213  #                                  sel = False))  #                                  sel = False))
214    
215      def _OnCellDClick(self, event):      def _OnCellDClick(self, event):
216          """Handle a double on a cell."""          """Handle a double click on a cell."""
217    
218          r = event.GetRow()          r = event.GetRow()
219          c = event.GetCol()          c = event.GetCol()
         if c == COL_SYMBOL:  
             group = self.GetTable().GetValueAsCustom(r, c, None)  
             prop = group.GetProperties()  
220    
221              # get a new ClassGroupProperties object and copy the          if c == COL_SYMBOL:
222              # values over to our current object              self.classifier.EditSymbol(r)
223              propDlg = SelectPropertiesDialog(NULL, prop, self.shapeType)          else:
224              if propDlg.ShowModal() == wxID_OK:              event.Skip()
                 new_prop = propDlg.GetClassGroupProperties()  
                 prop.SetProperties(new_prop)  
                 self.Refresh()  
             propDlg.Destroy()  
225    
226      #      #
227      # _OnSelectedRange() and _OnSelectedCell() were borrowed      # _OnSelectedRange() and _OnSelectedCell() were borrowed
# Line 214  class ClassGrid(wxGrid): Line 248  class ClassGrid(wxGrid):
248          #self.ConfigureForSelection()          #self.ConfigureForSelection()
249          event.Skip()          event.Skip()
250    
251        def _OnCellResize(self, event):
252            self.FitInside()
253            event.Skip()
254    
255  class ClassTable(wxPyGridTableBase):  class ClassTable(wxPyGridTableBase):
256      """Represents the underlying data structure for the grid."""      """Represents the underlying data structure for the grid."""
257    
258      NUM_COLS = 3      __col_labels = [_("Visible"), _("Symbol"), _("Value"), _("Label")]
259    
     __col_labels = [_("Symbol"), _("Value"), _("Label")]  
260    
261      def __init__(self, clazz, shapeType, view = None):      def __init__(self, view = None):
262          """Constructor.          """Constructor.
263    
264          shapeType -- the type of shape that the layer uses          shapeType -- the type of shape that the layer uses
# Line 230  class ClassTable(wxPyGridTableBase): Line 267  class ClassTable(wxPyGridTableBase):
267          """          """
268    
269          wxPyGridTableBase.__init__(self)          wxPyGridTableBase.__init__(self)
         self.SetView(view)  
         self.tdata = []  
270    
271          self.Reset(clazz, shapeType)          assert len(ClassTable.__col_labels) == NUM_COLS
272    
273            self.clazz = None
274            self.__colAttr = {}
275    
276      def Reset(self, clazz, shapeType):          self.SetView(view)
277    
278        def Reset(self, clazz, fieldType, shapeType, group = None):
279          """Reset the table with the given data.          """Reset the table with the given data.
280    
281          This is necessary because wxWindows does not allow a grid's          This is necessary because wxWindows does not allow a grid's
# Line 249  class ClassTable(wxPyGridTableBase): Line 289  class ClassTable(wxPyGridTableBase):
289          shapeType -- the type of shape that the layer uses          shapeType -- the type of shape that the layer uses
290          """          """
291    
292          assert(isinstance(clazz, Classification))          assert isinstance(clazz, Classification)
293    
294          self.GetView().BeginBatch()          self.GetView().BeginBatch()
295    
296          self.clazz = clazz          self.fieldType = fieldType
297          self.shapeType = shapeType          self.shapeType = shapeType
         self.renderer = ClassRenderer(self.shapeType)  
298    
299          old_len = len(self.tdata)          self.SetClassification(clazz, group)
300            self.__Modified(-1)
301    
302          self.tdata = []          self.__colAttr = {}
303    
304            attr = wxGridCellAttr()
305            attr.SetEditor(wxGridCellBoolEditor())
306            attr.SetRenderer(wxGridCellBoolRenderer())
307            attr.SetAlignment(wxALIGN_CENTER, wxALIGN_CENTER)
308            self.__colAttr[COL_VISIBLE] = attr
309    
310            attr = wxGridCellAttr()
311            attr.SetRenderer(ClassRenderer(self.shapeType))
312            attr.SetReadOnly()
313            self.__colAttr[COL_SYMBOL] = attr
314    
315            self.GetView().EndBatch()
316            self.GetView().FitInside()
317    
318        def GetClassification(self):
319            """Return the current classification."""
320            return self.clazz
321    
322        def SetClassification(self, clazz, group = None):
323            """Fill in the table with the given classification.
324            Select the given group if group is not None.
325            """
326    
327            self.GetView().BeginBatch()
328    
329            old_len = self.GetNumberRows()
330    
331            row = -1
332            self.clazz = clazz
333    
334            self.__NotifyRowChanges(old_len, self.GetNumberRows())
335    
336          #          #
337          # copy the data out of the classification and into our          # XXX: this is dead code at the moment
         # array  
338          #          #
339          for p in self.clazz:          if row > -1:
340              np = copy.copy(p)              self.GetView().ClearSelection()
341              self.__SetRow(-1, np)              self.GetView().SelectRow(row)
342                self.GetView().MakeCellVisible(row, 0)
343    
344            self.__Modified()
         self.__Modified(False)  
345    
         self.__NotifyRowChanges(old_len, len(self.tdata))  
346          self.GetView().EndBatch()          self.GetView().EndBatch()
347            self.GetView().FitInside()
348    
349      def __NotifyRowChanges(self, curRows, newRows):      def __NotifyRowChanges(self, curRows, newRows):
350            """Make sure table updates correctly if the number of
351            rows changes.
352            """
353          #          #
354          # silly message processing for updates to the number of          # silly message processing for updates to the number of
355          # rows and columns          # rows and columns
# Line 285  class ClassTable(wxPyGridTableBase): Line 359  class ClassTable(wxPyGridTableBase):
359                          wxGRIDTABLE_NOTIFY_ROWS_APPENDED,                          wxGRIDTABLE_NOTIFY_ROWS_APPENDED,
360                          newRows - curRows)    # how many                          newRows - curRows)    # how many
361              self.GetView().ProcessTableMessage(msg)              self.GetView().ProcessTableMessage(msg)
362                self.GetView().FitInside()
363          elif newRows < curRows:          elif newRows < curRows:
364              msg = wxGridTableMessage(self,              msg = wxGridTableMessage(self,
365                          wxGRIDTABLE_NOTIFY_ROWS_DELETED,                          wxGRIDTABLE_NOTIFY_ROWS_DELETED,
366                          curRows - newRows,    # position                          curRows,              # position
367                          curRows - newRows)    # how many                          curRows - newRows)    # how many
368              self.GetView().ProcessTableMessage(msg)              self.GetView().ProcessTableMessage(msg)
369                self.GetView().FitInside()
370    
371      def __SetRow(self, row, group):      def __SetRow(self, row, group):
372          """Set a row's data to that of the group.          """Set a row's data to that of the group.
373    
374          row -- if row is -1 or greater than the current number of rows          The table is considered modified after this operation.
375                 then group is appended to the end.  
376            row -- if row is < 0 'group' is inserted at the top of the table
377                   if row is >= GetNumberRows() or None 'group' is append to
378                        the end of the table.
379                   otherwise 'group' replaces row 'row'
380          """          """
381    
382          # either append or replace          # either append or replace
383          if row == -1 or row >= self.GetNumberRows():          if row is None or row >= self.GetNumberRows():
384              self.tdata.append(group)              self.clazz.AppendGroup(group)
385            elif row < 0:
386                self.clazz.InsertGroup(0, group)
387          else:          else:
388              self.tdata[row] = group              if row == 0:
389                    self.clazz.SetDefaultGroup(group)
390                else:
391                    self.clazz.ReplaceGroup(row - 1, group)
392    
393          self.__Modified()          self.__Modified()
394    
# Line 314  class ClassTable(wxPyGridTableBase): Line 399  class ClassTable(wxPyGridTableBase):
399      def GetRowLabelValue(self, row):      def GetRowLabelValue(self, row):
400          """Return the label for the given row."""          """Return the label for the given row."""
401    
402          group = self.tdata[row]          if row == 0:
403          if isinstance(group, ClassGroupDefault):   return _("Default")              return _("Default")
404          if isinstance(group, ClassGroupSingleton): return _("Singleton")          else:
405          if isinstance(group, ClassGroupRange):     return _("Range")              group = self.clazz.GetGroup(row - 1)
406          if isinstance(group, ClassGroupMap):       return _("Map")              if isinstance(group, ClassGroupDefault):   return _("Default")
407                if isinstance(group, ClassGroupSingleton): return _("Singleton")
408                if isinstance(group, ClassGroupRange):     return _("Range")
409                if isinstance(group, ClassGroupMap):       return _("Map")
410    
411          assert(False) # shouldn't get here          assert False # shouldn't get here
412          return _("")          return ""
413    
414      def GetNumberRows(self):      def GetNumberRows(self):
415          """Return the number of rows."""          """Return the number of rows."""
416          return len(self.tdata)          if self.clazz is None:
417                return 0
418    
419            return self.clazz.GetNumGroups() + 1 # +1 for default group
420    
421      def GetNumberCols(self):      def GetNumberCols(self):
422          """Return the number of columns."""          """Return the number of columns."""
423          return self.NUM_COLS          return NUM_COLS
424    
425      def IsEmptyCell(self, row, col):      def IsEmptyCell(self, row, col):
426          """Determine if a cell is empty. This is always false."""          """Determine if a cell is empty. This is always false."""
# Line 347  class ClassTable(wxPyGridTableBase): Line 438  class ClassTable(wxPyGridTableBase):
438          """          """
439    
440          self.SetValueAsCustom(row, col, None, value)          self.SetValueAsCustom(row, col, None, value)
         self.__Modified()  
441                
442      def GetValueAsCustom(self, row, col, typeName):      def GetValueAsCustom(self, row, col, typeName):
443          """Return the object that is used to represent the given          """Return the object that is used to represent the given
# Line 356  class ClassTable(wxPyGridTableBase): Line 446  class ClassTable(wxPyGridTableBase):
446          typeName -- unused, but needed to overload wxPyGridTableBase          typeName -- unused, but needed to overload wxPyGridTableBase
447          """          """
448    
449          group = self.tdata[row]          if row == 0:
450                group = self.clazz.GetDefaultGroup()
451            else:
452                group = self.clazz.GetGroup(row - 1)
453    
454    
455            if col == COL_VISIBLE:
456                return group.IsVisible()
457    
458          if col == COL_SYMBOL:          if col == COL_SYMBOL:
459              return group              return group.GetProperties()
460    
461          if col == COL_LABEL:          if col == COL_LABEL:
462              return group.GetLabel()              return group.GetLabel()
463    
464          # col must be COL_VALUE          # col must be COL_VALUE
465          assert(col == COL_VALUE)          assert col == COL_VALUE
466    
467          if isinstance(group, ClassGroupDefault):          if isinstance(group, ClassGroupDefault):
468              return _("DEFAULT")              return _("DEFAULT")
469          elif isinstance(group, ClassGroupSingleton):          elif isinstance(group, ClassGroupSingleton):
470              return group.GetValue()              return group.GetValue()
471          elif isinstance(group, ClassGroupRange):          elif isinstance(group, ClassGroupRange):
472              return _("%s - %s") % (group.GetMin(), group.GetMax())              return group.GetRange()
473    
474          assert(False) # shouldn't get here          assert False # shouldn't get here
475          return None          return None
476    
477      def __ParseInput(self, value):      def __ParseInput(self, value):
478          """Try to determine what kind of input value is          """Try to determine what kind of input value is
479             (string, number, or range)             (string, number, or range)
480    
481          Returns a tuple of length one if there is a single          Returns a tuple (type, data) where type is 0 if data is
482          value, or of length two if it is a range.          a singleton value, or 1 if is a range
483          """          """
484    
485          type = self.clazz.GetFieldType()          type = self.fieldType
486    
487          if type == FIELDTYPE_STRING:          if type == FIELDTYPE_STRING:
488              return (value,)              return (0, value)
489          elif type == FIELDTYPE_INT or type == FIELDTYPE_DOUBLE:          elif type in (FIELDTYPE_INT, FIELDTYPE_DOUBLE):
   
490              if type == FIELDTYPE_INT:              if type == FIELDTYPE_INT:
491                    # the float call allows the user to enter 1.0 for 1
492                  conv = lambda p: int(float(p))                  conv = lambda p: int(float(p))
493              else:              else:
494                  conv = lambda p: p                  conv = float
495    
496              #              #
497              # first try to take the input as a single number              # first try to take the input as a single number
498              # if there's an exception try to break it into              # if there's an exception try to break it into
499              # a range seperated by a '-'. take care to ignore              # a range. if there is an exception here, let it
500              # a leading '-' as that could be for a negative number.              # pass up to the calling function.
             # then try to parse the individual parts. if there  
             # is an exception here, let it pass up to the calling  
             # function.  
501              #              #
502              try:              try:
503                  return (conv(Str2Num(value)),)                  return (0, conv(value))
504              except ValueError:              except ValueError:
505                  i = value.find('-')                  return (1, Range(value))
                 if i == 0:  
                     i = value.find('-', 1)  
506    
507                  return (conv(Str2Num(value[:i])), conv(Str2Num(value[i+1:])))          assert False  # shouldn't get here
508            return (0,None)
         assert(False) # shouldn't get here  
               
509    
510      def SetValueAsCustom(self, row, col, typeName, value):      def SetValueAsCustom(self, row, col, typeName, value):
511          """Set the cell specified by 'row' and 'col' to 'value'.          """Set the cell specified by 'row' and 'col' to 'value'.
# Line 429  class ClassTable(wxPyGridTableBase): Line 519  class ClassTable(wxPyGridTableBase):
519          typeName -- unused, but needed to overload wxPyGridTableBase          typeName -- unused, but needed to overload wxPyGridTableBase
520          """          """
521    
522          assert(col >= 0 and col < self.GetNumberCols())          assert 0 <= col < self.GetNumberCols()
523          assert(row >= 0 and row < self.GetNumberRows())          assert 0 <= row < self.GetNumberRows()
524    
525          group = self.tdata[row]          if row == 0:
526                group = self.clazz.GetDefaultGroup()
527            else:
528                group = self.clazz.GetGroup(row - 1)
529    
530          mod = False          mod = True # assume the data will change
531    
532          if col == COL_SYMBOL:          if col == COL_VISIBLE:
533              self.__SetRow(row, value)              group.SetVisible(value)
534              mod = True          elif col == COL_SYMBOL:
535                group.SetProperties(value)
536            elif col == COL_LABEL:
537                group.SetLabel(value)
538          elif col == COL_VALUE:          elif col == COL_VALUE:
539              if isinstance(group, ClassGroupDefault):              if isinstance(group, ClassGroupDefault):
540                  # not allowed to modify the default value                  # not allowed to modify the default value
# Line 451  class ClassTable(wxPyGridTableBase): Line 547  class ClassTable(wxPyGridTableBase):
547                      dataInfo = self.__ParseInput(value)                      dataInfo = self.__ParseInput(value)
548                  except ValueError:                  except ValueError:
549                      # bad input, ignore the request                      # bad input, ignore the request
550                      pass                      mod = False
551                  else:                  else:
552    
553                        changed = False
554                      ngroup = group                      ngroup = group
555                      props = group.GetProperties()                      props = group.GetProperties()
556    
# Line 462  class ClassTable(wxPyGridTableBase): Line 559  class ClassTable(wxPyGridTableBase):
559                      # changing the underlying group type if the                      # changing the underlying group type if the
560                      # group was a singleton and a range was entered                      # group was a singleton and a range was entered
561                      #                      #
562                      if len(dataInfo) == 1:                      if dataInfo[0] == 0:
563                          if not isinstance(group, ClassGroupSingleton):                          if not isinstance(group, ClassGroupSingleton):
564                              ngroup = ClassGroupSingleton(prop = props)                              ngroup = ClassGroupSingleton(props = props)
565                          ngroup.SetValue(dataInfo[0])                              changed = True
566                      elif len(dataInfo) == 2:                          ngroup.SetValue(dataInfo[1])
567                        elif dataInfo[0] == 1:
568                          if not isinstance(group, ClassGroupRange):                          if not isinstance(group, ClassGroupRange):
569                              ngroup = ClassGroupRange(prop = props)                              ngroup = ClassGroupRange(props = props)
570                          ngroup.SetRange(dataInfo[0], dataInfo[1])                              changed = True
571                            ngroup.SetRange(dataInfo[1])
572                      else:                      else:
573                          assert(False)                          assert False
574                            pass
                     ngroup.SetLabel(group.GetLabel())  
   
                     self.__SetRow(row, ngroup)  
575    
576                      mod = True                      if changed:
577                            ngroup.SetLabel(group.GetLabel())
578                            self.SetClassGroup(row, ngroup)
579          elif col == COL_LABEL:          else:
580              group.SetLabel(value)              assert False # shouldn't be here
581              mod = True              pass
582    
583          if mod:          if mod:
584              self.__Modified()              self.__Modified()
585              self.GetView().Refresh()              self.GetView().Refresh()
586    
587      def GetAttr(self, row, col, someExtraParameter):      def GetAttr(self, row, col, someExtraParameter):
588          """Returns the cell attributes"""          """Returns the cell attributes"""
589    
590          attr = wxGridCellAttr()          return self.__colAttr.get(col, wxGridCellAttr()).Clone()
         #attr = wxPyGridTableBase.GetAttr(self, row, col, someExtraParameter)  
   
         if col == COL_SYMBOL:  
             attr.SetRenderer(ClassRenderer(self.shapeType))  
             attr.SetReadOnly()  
   
         return attr  
591    
592      def GetClassGroup(self, row):      def GetClassGroup(self, row):
593          """Return the ClassGroup object representing row 'row'."""          """Return the ClassGroup object representing row 'row'."""
594    
595          return self.GetValueAsCustom(row, COL_SYMBOL, None)          #return self.GetValueAsCustom(row, COL_SYMBOL, None)
596            if row == 0:
597                return self.clazz.GetDefaultGroup()
598            else:
599                return self.clazz.GetGroup(row - 1)
600    
601      def SetClassGroup(self, row, group):      def SetClassGroup(self, row, group):
602          self.SetValueAsCustom(row, COL_SYMBOL, None, group)          """Set the given row to properties of group."""
603            self.__SetRow(row, group)
604            self.GetView().Refresh()
605    
606      def __Modified(self, mod = True):      def __Modified(self, mod = True):
607          """Set the modified flag."""          """Adjust the modified flag.
608          self.modified = mod  
609            mod -- if -1 set the modified flag to False, otherwise perform
610                   an 'or' operation with the current value of the flag and
611                   'mod'
612            """
613    
614            if mod == -1:
615                self.modified = False
616            else:
617                self.modified = mod or self.modified
618    
619      def IsModified(self):      def IsModified(self):
620          """True if this table is considered modified."""          """True if this table is considered modified."""
621          return self.modified          return self.modified
622    
623      def DeleteRows(self, pos, numRows = 1):      def DeleteRows(self, pos, numRows = 1):
624          """Deletes 'numRows' beginning at row 'pos'.          """Deletes 'numRows' beginning at row 'pos'.
625    
626          The table is considered modified after this operation.          The row representing the default group is not removed.
627    
628            The table is considered modified if any rows are removed.
629          """          """
630    
631          assert(pos >= 0)          assert pos >= 0
632          old_len = len(self.tdata)          old_len = self.GetNumberRows()
633          for row in range(pos, pos - numRows, -1):          for row in range(pos, pos - numRows, -1):
634              group = self.GetValueAsCustom(row, COL_SYMBOL, None)              group = self.GetClassGroup(row)
635              if not isinstance(group, ClassGroupDefault):              if row != 0:
636                  self.tdata.pop(row)                  self.clazz.RemoveGroup(row - 1)
637                  self.__Modified()                  self.__Modified()
638            
639          if self.IsModified():          if self.IsModified():
640              self.__NotifyRowChanges(old_len, len(self.tdata))              self.__NotifyRowChanges(old_len, self.GetNumberRows())
641    
642      def AppendRows(self, numRows = 1):      def AppendRows(self, numRows = 1):
643          """Append 'numRows' empty rows to the end of the table."""          """Append 'numRows' empty rows to the end of the table.
644    
645            The table is considered modified if any rows are appended.
646            """
647    
648          old_len = len(self.tdata)          old_len = self.GetNumberRows()
649          for i in range(numRows):          for i in range(numRows):
650              np = ClassGroupSingleton()              np = ClassGroupSingleton()
651              self.__SetRow(-1, np)              self.__SetRow(None, np)
             #self.tdata.append([np, np.GetValue(), np.GetLabel()])  
             self.__Modified()  
652    
653          if self.IsModified():          if self.IsModified():
654              self.__NotifyRowChanges(old_len, len(self.tdata))              self.__NotifyRowChanges(old_len, self.GetNumberRows())
655    
656    
657  class Classifier(wxDialog):  ID_PROPERTY_REVERT = 4002
658        ID_PROPERTY_ADD = 4003
659      def __init__(self, parent, layer):  ID_PROPERTY_GENCLASS = 4004
660          wxDialog.__init__(self, parent, -1, _("Classify"),  ID_PROPERTY_REMOVE = 4005
661                            style = wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)  ID_PROPERTY_MOVEUP = 4006
662    ID_PROPERTY_MOVEDOWN = 4007
663    ID_PROPERTY_TRY = 4008
664    ID_PROPERTY_EDITSYM = 4009
665    ID_PROPERTY_SELECT = 4011
666    ID_PROPERTY_TITLE = 4012
667    ID_PROPERTY_FIELDTEXT = 4013
668    
669    BTN_ADD = 0
670    BTN_EDIT = 1
671    BTN_GEN = 2
672    BTN_UP = 3
673    BTN_DOWN = 4
674    BTN_RM = 5
675    
676    EB_LAYER_TITLE = 0
677    EB_SELECT_FIELD = 1
678    EB_GEN_CLASS = 2
679    
680    class Classifier(NonModalNonParentDialog):
681    
682        type2string = {None:             _("None"),
683                       FIELDTYPE_STRING: _("Text"),
684                       FIELDTYPE_INT:    _("Integer"),
685                       FIELDTYPE_DOUBLE: _("Decimal")}
686    
687        def __init__(self, parent, name, map, layer, group = None):
688            """Create a Properties/Classification dialog for a layer.
689            The layer is part of map. If group is not None, select that
690            group in the classification table.
691            """
692    
693            NonModalNonParentDialog.__init__(self, parent, name, "")
694    
695            self.__SetTitle(layer.Title())
696    
697            self.parent.Subscribe(MAP_REPLACED, self.map_replaced)
698          self.layer = layer          self.layer = layer
699            self.map = map
700    
701          topBox = wxBoxSizer(wxVERTICAL)          self.map.Subscribe(MAP_LAYERS_REMOVED, self.map_layers_removed)
702            self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
703                                 self.layer_shapestore_replaced)
704    
705          topBox.Add(wxStaticText(self, -1, _("Layer: %s") % layer.Title()),          self.genDlg = None
             0, wxALIGN_LEFT | wxALL, 4)  
         topBox.Add(wxStaticText(self, -1, _("Type: %s") % layer.ShapeType()),  
             0, wxALIGN_LEFT | wxALL, 4)  
706    
707          propertyBox = wxBoxSizer(wxHORIZONTAL)          ############################
708          propertyBox.Add(wxStaticText(self, -1, _("Field: ")),          # Create the controls
709              0, wxALIGN_CENTER | wxALL, 4)          #
   
         self.fields = wxComboBox(self, ID_PROPERTY_SELECT, "",  
                                      style = wxCB_READONLY)  
   
         self.num_cols = layer.table.field_count()  
         # just assume the first field in case one hasn't been  
         # specified in the file.  
         self.__cur_field = 0  
         clazz = layer.GetClassification()  
         field = clazz.GetField()  
   
         self.fields.Append("<None>")  
         self.fields.SetClientData(0, None)  
   
         for i in range(self.num_cols):  
             type, name, len, decc = layer.table.field_info(i)  
             self.fields.Append(name)  
   
             if name == field:  
                 self.__cur_field = i + 1  
                 self.fields.SetClientData(i + 1, clazz)  
             else:  
                 self.fields.SetClientData(i + 1, None)  
710    
711          self.fields.SetSelection(self.__cur_field)          panel = wxPanel(self, -1)
712    
713          propertyBox.Add(self.fields, 1, wxGROW|wxALL, 4)          text_title = wxTextCtrl(panel, ID_PROPERTY_TITLE, layer.Title())
714          EVT_COMBOBOX(self, ID_PROPERTY_SELECT, self._OnFieldSelect)          self.fieldTypeText = wxStaticText(panel, -1, "")
715    
716          topBox.Add(propertyBox, 0, wxGROW, 4)          if layer.HasClassification():
717                self.originalClass = self.layer.GetClassification()
718                self.originalClassField = self.layer.GetClassificationColumn()
719                field = self.originalClassField
720                fieldType = self.layer.GetFieldType(field)
721    
722          #              table = layer.ShapeStore().Table()
723          # Classification data table              #
724                # make field choice box
725                #
726                self.fields = wxChoice(panel, ID_PROPERTY_SELECT,)
727    
728                self.num_cols = table.NumColumns()
729                # just assume the first field in case one hasn't been
730                # specified in the file.
731                self.__cur_field = 0
732    
733                self.fields.Append("<None>")
734    
735                if fieldType is None:
736                    self.fields.SetClientData(0, copy.deepcopy(self.originalClass))
737                else:
738                    self.fields.SetClientData(0, None)
739    
740                for i in range(self.num_cols):
741                    name = table.Column(i).name
742                    self.fields.Append(name)
743    
744                    if name == field:
745                        self.__cur_field = i + 1
746                        self.fields.SetClientData(i + 1,
747                                                  copy.deepcopy(self.originalClass))
748                    else:
749                        self.fields.SetClientData(i + 1, None)
750    
751                button_gen = wxButton(panel, ID_PROPERTY_GENCLASS,
752                    _("Generate Class"))
753                button_add = wxButton(panel, ID_PROPERTY_ADD,
754                    _("Add"))
755                button_moveup = wxButton(panel, ID_PROPERTY_MOVEUP,
756                    _("Move Up"))
757                button_movedown = wxButton(panel, ID_PROPERTY_MOVEDOWN,
758                    _("Move Down"))
759                button_edit = wxButton(panel, ID_PROPERTY_EDITSYM,
760                    _("Edit Symbol"))
761                button_remove = wxButton(panel, ID_PROPERTY_REMOVE,
762                    _("Remove"))
763    
764                self.classGrid = ClassGrid(panel, self)
765    
766                # calling __SelectField after creating the classGrid fills in the
767                # grid with the correct information
768                self.fields.SetSelection(self.__cur_field)
769                self.__SelectField(self.__cur_field, group = group)
770    
771            button_try = wxButton(self, ID_PROPERTY_TRY, _("Try"))
772            button_revert = wxButton(self, ID_PROPERTY_REVERT, _("Revert"))
773            button_ok = wxButton(self, wxID_OK, _("OK"))
774            button_close = wxButton(self, wxID_CANCEL, _("Close"))
775            button_ok.SetDefault()
776    
777            ############################
778            # Layout the controls
779          #          #
780    
781          controlBox = wxBoxSizer(wxHORIZONTAL)          topBox = wxBoxSizer(wxVERTICAL)
782          self.classGrid = ClassGrid(self)          panelBox = wxBoxSizer(wxVERTICAL)
783    
784          self.__SetGridTable(self.__cur_field)          sizer = wxBoxSizer(wxHORIZONTAL)
785            sizer.Add(wxStaticText(panel, -1, _("Title: ")),
786                0, wxALIGN_LEFT | wxALL | wxALIGN_CENTER_VERTICAL, 4)
787            sizer.Add(text_title, 1, wxGROW, 0)
788    
789          controlBox.Add(self.classGrid, 1, wxGROW, 0)          panelBox.Add(sizer, 0, wxGROW, 4)
790    
791          controlButtonBox = wxBoxSizer(wxVERTICAL)          if isinstance(layer, RasterLayer):
792          controlButtonBox.Add(wxButton(self, ID_CLASSIFY_ADD,              type = "Image"
793              _("Add")), 0, wxGROW | wxALL, 4)          else:
794          controlButtonBox.Add(wxButton(self, ID_CLASSIFY_GENRANGE,              type = layer.ShapeType()
             _("Generate Ranges")), 0, wxGROW | wxALL, 4)  
795    
796          controlButtonBox.Add(wxButton(self, ID_CLASSIFY_MOVEUP,          panelBox.Add(wxStaticText(panel, -1, _("Type: %s") % type),
797              _("Move Up")), 0, wxGROW | wxALL, 4)              0, wxALIGN_LEFT | wxALL, 4)
         controlButtonBox.Add(wxButton(self, ID_CLASSIFY_MOVEDOWN,  
             _("Move Down")), 0, wxGROW | wxALL, 4)  
798    
799          controlButtonBox.Add(wxButton(self, ID_CLASSIFY_REMOVE,          if layer.HasClassification():
             _("Remove")), 0, wxGROW | wxALL | wxALIGN_BOTTOM, 4)  
800    
801          controlBox.Add(controlButtonBox, 0, wxGROW, 10)              classBox = wxStaticBoxSizer(
802          topBox.Add(controlBox, 1, wxGROW, 10)                          wxStaticBox(panel, -1, _("Classification")), wxVERTICAL)
803    
         EVT_BUTTON(self, ID_CLASSIFY_ADD, self._OnAdd)  
         EVT_BUTTON(self, ID_CLASSIFY_REMOVE, self._OnRemove)  
         EVT_BUTTON(self, ID_CLASSIFY_GENRANGE, self._OnGenRange)  
         EVT_BUTTON(self, ID_CLASSIFY_MOVEUP, self._OnMoveUp)  
         EVT_BUTTON(self, ID_CLASSIFY_MOVEDOWN, self._OnMoveDown)  
804    
805          #              sizer = wxBoxSizer(wxHORIZONTAL)
806          # Control buttons:              sizer.Add(wxStaticText(panel, ID_PROPERTY_FIELDTEXT, _("Field: ")),
807          #                  0, wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL | wxALL, 4)
808          buttonBox = wxBoxSizer(wxHORIZONTAL)              sizer.Add(self.fields, 1, wxGROW | wxALL, 4)
809          buttonBox.Add(wxButton(self, ID_CLASSIFY_OK, _("OK")),  
810                        0, wxALL, 4)              classBox.Add(sizer, 0, wxGROW, 4)
811          buttonBox.Add(wxButton(self, ID_CLASSIFY_CANCEL, _("Cancel")),  
812                        0, wxALL, 4)              classBox.Add(self.fieldTypeText, 0,
813          topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 10)                          wxGROW | wxALIGN_LEFT | wxALL | wxADJUST_MINSIZE, 4)
814    
815          EVT_BUTTON(self, ID_CLASSIFY_OK, self._OnOK)              controlBox = wxBoxSizer(wxHORIZONTAL)
816          EVT_BUTTON(self, ID_CLASSIFY_CANCEL, self._OnCancel)              controlButtonBox = wxBoxSizer(wxVERTICAL)
817    
818                controlButtonBox.Add(button_gen, 0, wxGROW|wxALL, 4)
819                controlButtonBox.Add(button_add, 0, wxGROW|wxALL, 4)
820                controlButtonBox.Add(button_moveup, 0, wxGROW|wxALL, 4)
821                controlButtonBox.Add(button_movedown, 0, wxGROW|wxALL, 4)
822                controlButtonBox.Add(button_edit, 0, wxGROW|wxALL, 4)
823                controlButtonBox.Add(60, 20, 0, wxGROW|wxALL|wxALIGN_BOTTOM, 4)
824                controlButtonBox.Add(button_remove, 0,
825                                     wxGROW|wxALL|wxALIGN_BOTTOM, 4)
826    
827                controlBox.Add(self.classGrid, 1, wxGROW, 0)
828                controlBox.Add(controlButtonBox, 0, wxGROW, 10)
829    
830          self.SetAutoLayout(true)              classBox.Add(controlBox, 1, wxGROW, 10)
831                panelBox.Add(classBox, 1, wxGROW, 0)
832    
833    
834            buttonBox = wxBoxSizer(wxHORIZONTAL)
835            buttonBox.Add(button_try, 0, wxRIGHT|wxEXPAND, 10)
836            buttonBox.Add(button_revert, 0, wxRIGHT|wxEXPAND, 10)
837            buttonBox.Add(button_ok, 0, wxRIGHT|wxEXPAND, 10)
838            buttonBox.Add(button_close, 0, wxRIGHT|wxEXPAND, 10)
839    
840            panel.SetAutoLayout(True)
841            panel.SetSizer(panelBox)
842            panelBox.Fit(panel)
843            panelBox.SetSizeHints(panel)
844    
845            topBox.Add(panel, 1, wxGROW | wxALL, 4)
846            topBox.Add(buttonBox, 0, wxALIGN_RIGHT|wxBOTTOM|wxTOP, 10)
847    
848            self.SetAutoLayout(True)
849          self.SetSizer(topBox)          self.SetSizer(topBox)
850          topBox.Fit(self)          topBox.Fit(self)
851          topBox.SetSizeHints(self)          topBox.SetSizeHints(self)
852            self.Layout()
853    
854      def __BuildClassification(self, fieldIndex):          ###########
855    
856          clazz = Classification()          EVT_CHOICE(self, ID_PROPERTY_SELECT, self._OnFieldSelect)
857          fieldName = self.fields.GetString(fieldIndex)          EVT_TEXT(self, ID_PROPERTY_TITLE, self._OnTitleChanged)
858          fieldType = self.layer.GetFieldType(fieldName)          EVT_BUTTON(self, wxID_OK, self._OnOK)
859            EVT_BUTTON(self, ID_PROPERTY_TRY, self._OnTry)
860          clazz.SetField(fieldName)          EVT_BUTTON(self, wxID_CANCEL, self._OnCloseBtn)
861          clazz.SetFieldType(fieldType)          EVT_BUTTON(self, ID_PROPERTY_REVERT, self._OnRevert)
862    
863            EVT_BUTTON(self, ID_PROPERTY_ADD, self._OnAdd)
864            EVT_BUTTON(self, ID_PROPERTY_EDITSYM, self._OnEditSymbol)
865            EVT_BUTTON(self, ID_PROPERTY_REMOVE, self._OnRemove)
866            EVT_BUTTON(self, ID_PROPERTY_GENCLASS, self._OnGenClass)
867            EVT_BUTTON(self, ID_PROPERTY_MOVEUP, self._OnMoveUp)
868            EVT_BUTTON(self, ID_PROPERTY_MOVEDOWN, self._OnMoveDown)
869    
870            ######################
871    
872            text_title.SetFocus()
873            self.haveApplied = False
874    
875        def unsubscribe_messages(self):
876            """Unsubscribe from all messages."""
877            self.parent.Unsubscribe(MAP_REPLACED, self.map_replaced)
878            self.map.Unsubscribe(MAP_LAYERS_REMOVED, self.map_layers_removed)
879            self.layer.Unsubscribe(LAYER_SHAPESTORE_REPLACED,
880                                   self.layer_shapestore_replaced)
881    
882        def map_layers_removed(self, map):
883            """Subscribed to MAP_LAYERS_REMOVED. If this layer was removed,
884            Close self.
885            """
886            if self.layer not in self.map.Layers():
887                self.Close()
888    
889          numRows = self.classGrid.GetNumberRows()      def layer_shapestore_replaced(self, *args):
890            """Subscribed to the map's LAYER_SHAPESTORE_REPLACED message.
891    
892          assert(numRows > 0) # there should always be a default row          Close self.
893            """
894            self.Close()
895    
896        def map_replaced(self, *args):
897            """Subscribed to the mainwindow's MAP_REPLACED message. Close self."""
898            self.Close()
899    
900        def EditSymbol(self, row):
901            """Open up a dialog where the user can select the properties
902            for a group.
903            """
904          table = self.classGrid.GetTable()          table = self.classGrid.GetTable()
905          clazz.SetDefaultGroup(table.GetClassGroup(0))          prop = table.GetValueAsCustom(row, COL_SYMBOL, None)
906    
907          for i in range(1, numRows):          # get a new ClassGroupProperties object and copy the
908              clazz.AddGroup(table.GetClassGroup(i))          # values over to our current object
909            propDlg = SelectPropertiesDialog(self, prop, self.layer.ShapeType())
910    
911            self.Enable(False)
912            if propDlg.ShowModal() == wxID_OK:
913                new_prop = propDlg.GetClassGroupProperties()
914                table.SetValueAsCustom(row, COL_SYMBOL, None, new_prop)
915            self.Enable(True)
916            propDlg.Destroy()
917            
918        def _SetClassification(self, clazz):
919            """Called from the ClassGen dialog when a new classification has
920            been created and should be set in the table.
921            """
922            # FIXME: This could be implemented using a message
923            
924            self.fields.SetClientData(self.__cur_field, clazz)
925            self.classGrid.GetTable().SetClassification(clazz)
926    
927        def __BuildClassification(self, fieldIndex, copyClass=False, force=False):
928            """Pack the classification setting into a Classification object.
929            Returns (Classification, fieldName) where fieldName is the selected
930            field in the table that the classification should be used with.
931            """
932    
933    #       numRows = self.classGrid.GetNumberRows()
934    #       assert numRows > 0  # there should always be a default row
935    
936          return clazz          if fieldIndex == 0:
937                fieldName = None
938                fieldType = None
939            else:
940                fieldName = self.fields.GetString(fieldIndex)
941                fieldType = self.layer.GetFieldType(fieldName)
942    
943      def __SetGridTable(self, fieldIndex):          clazz = self.fields.GetClientData(fieldIndex)
944            if clazz is None or self.classGrid.GetTable().IsModified() or force:
945                clazz = self.classGrid.GetTable().GetClassification()
946                if copyClass:
947                    clazz = copy.deepcopy(clazz)
948    
949            return clazz, fieldName
950    
951        def __SetGridTable(self, fieldIndex, group = None):
952            """Set the table with the classification associated with the
953            selected field at fieldIndex. Select the specified group
954            if group is not None.
955            """
956    
957          clazz = self.fields.GetClientData(fieldIndex)          clazz = self.fields.GetClientData(fieldIndex)
958    
# Line 680  class Classifier(wxDialog): Line 960  class Classifier(wxDialog):
960              clazz = Classification()              clazz = Classification()
961              clazz.SetDefaultGroup(              clazz.SetDefaultGroup(
962                  ClassGroupDefault(                  ClassGroupDefault(
963                      self.layer.GetClassification().GetDefaultGroup().GetProperties()))                      self.layer.GetClassification().
964                                   GetDefaultGroup().GetProperties()))
965    
966              fieldName = self.fields.GetString(fieldIndex)          fieldName = self.fields.GetString(fieldIndex)
967              fieldType = self.layer.GetFieldType(fieldName)          fieldType = self.layer.GetFieldType(fieldName)
             clazz.SetFieldType(fieldType)  
968                                    
969          self.classGrid.CreateTable(clazz, self.layer.ShapeType())          self.classGrid.CreateTable(clazz, fieldType,
970                                       self.layer.ShapeType(), group)
971    
972      def _OnFieldSelect(self, event):      def __SetFieldTypeText(self, fieldIndex):
973          clazz = self.__BuildClassification(self.__cur_field)          """Set the field type string using the data type of the field
974          self.fields.SetClientData(self.__cur_field, clazz)          at fieldIndex.
975            """
976            fieldName = self.fields.GetString(fieldIndex)
977            fieldType = self.layer.GetFieldType(fieldName)
978    
979          self.__cur_field = self.fields.GetSelection()          assert Classifier.type2string.has_key(fieldType)
         self.__SetGridTable(self.__cur_field)  
980    
981      def _OnOK(self, event):          text = Classifier.type2string[fieldType]
982    
983            self.fieldTypeText.SetLabel(_("Data Type: %s") % text)
984    
985        def __SelectField(self, newIndex, oldIndex = -1, group = None):
986            """This method assumes that the current selection for the
987            combo has already been set by a call to SetSelection().
988            """
989    
990            assert oldIndex >= -1
991    
992            if oldIndex != -1:
993                clazz, name = self.__BuildClassification(oldIndex, force = True)
994                self.fields.SetClientData(oldIndex, clazz)
995    
996            self.__SetGridTable(newIndex, group)
997    
998            self.__EnableButtons(EB_SELECT_FIELD)
999    
1000            self.__SetFieldTypeText(newIndex)
1001    
1002        def __SetTitle(self, title):
1003            """Set the title of the dialog."""
1004            if title != "":
1005                title = ": " + title
1006    
1007            self.SetTitle(_("Layer Properties") + title)
1008    
1009        def _OnEditSymbol(self, event):
1010            """Open up a dialog for the user to select group properties."""
1011            sel = self.classGrid.GetCurrentSelection()
1012    
1013            if len(sel) == 1:
1014                self.EditSymbol(sel[0])
1015    
1016        def _OnFieldSelect(self, event):
1017            index = self.fields.GetSelection()
1018            self.__SelectField(index, self.__cur_field)
1019            self.__cur_field = index
1020    
1021        def _OnTry(self, event):
1022          """Put the data from the table into a new Classification and hand          """Put the data from the table into a new Classification and hand
1023             it to the layer.             it to the layer.
1024          """          """
1025    
1026          clazz = self.fields.GetClientData(self.__cur_field)          if self.layer.HasClassification():
1027                clazz = self.fields.GetClientData(self.__cur_field)
1028    
1029          #              #
1030          # only build the classification if there wasn't one to              # only build the classification if there wasn't one to
1031          # to begin with or it has been modified              # to begin with or it has been modified
1032          #              #
1033          if clazz is None or self.classGrid.GetTable().IsModified():              self.classGrid.SaveEditControlValue()
1034              clazz = self.__BuildClassification(self.__cur_field)              clazz, name = self.__BuildClassification(self.__cur_field, True)
1035    
1036          clazz.SetLayer(self.layer)              self.layer.SetClassificationColumn(name)
1037                self.layer.SetClassification(clazz)
1038    
1039          self.layer.SetClassification(clazz)          self.haveApplied = True
1040    
1041          self.EndModal(wxID_OK)      def _OnOK(self, event):
1042            self._OnTry(event)
1043            self.Close()
1044    
1045      def _OnCancel(self, event):      def OnClose(self, event):
1046          """Do nothing. The layer's current classification stays the same."""          self.unsubscribe_messages()
1047          self.EndModal(wxID_CANCEL)          NonModalNonParentDialog.OnClose(self, event)
1048    
1049        def _OnCloseBtn(self, event):
1050            """Close is similar to Cancel except that any changes that were
1051            made and applied remain applied, but the currently displayed
1052            classification is discarded.
1053            """
1054    
1055            self.Close()
1056    
1057        def _OnRevert(self, event):
1058            """The layer's current classification stays the same."""
1059            if self.haveApplied:
1060                self.layer.SetClassificationColumn(self.originalClassField)
1061                self.layer.SetClassification(self.originalClass)
1062    
1063            #self.Close()
1064    
1065      def _OnAdd(self, event):      def _OnAdd(self, event):
1066          self.classGrid.AppendRows()          self.classGrid.AppendRows()
# Line 725  class Classifier(wxDialog): Line 1068  class Classifier(wxDialog):
1068      def _OnRemove(self, event):      def _OnRemove(self, event):
1069          self.classGrid.DeleteSelectedRows()          self.classGrid.DeleteSelectedRows()
1070    
1071      def _OnGenRange(self, event):      def _OnGenClass(self, event):
1072          print "Classifier._OnGenRange()"          """Open up a dialog for the user to generate classifications."""
1073    
1074            self.genDlg = ClassGenDialog(self, self.layer,
1075                              self.fields.GetString(self.__cur_field))
1076    
1077            EVT_CLOSE(self.genDlg, self._OnGenDialogClose)
1078    
1079            self.__EnableButtons(EB_GEN_CLASS)
1080    
1081            self.genDlg.Show()
1082    
1083        def _OnGenDialogClose(self, event):
1084            """Reenable buttons after the generate classification
1085            dialog is closed.
1086            """
1087            self.genDlg.Destroy()
1088            self.genDlg = None
1089            self.__EnableButtons(EB_GEN_CLASS)
1090    
1091      def _OnMoveUp(self, event):      def _OnMoveUp(self, event):
1092            """When the user clicks MoveUp, try to move a group up one row."""
1093          sel = self.classGrid.GetCurrentSelection()          sel = self.classGrid.GetCurrentSelection()
1094    
1095          if len(sel) == 1:          if len(sel) == 1:
# Line 741  class Classifier(wxDialog): Line 1102  class Classifier(wxDialog):
1102                  table.SetClassGroup(i, x)                  table.SetClassGroup(i, x)
1103                  self.classGrid.ClearSelection()                  self.classGrid.ClearSelection()
1104                  self.classGrid.SelectRow(i - 1)                  self.classGrid.SelectRow(i - 1)
1105                    self.classGrid.MakeCellVisible(i - 1, 0)
1106    
1107      def _OnMoveDown(self, event):      def _OnMoveDown(self, event):
1108            """When the user clicks MoveDown, try to move a group down one row."""
1109          sel = self.classGrid.GetCurrentSelection()          sel = self.classGrid.GetCurrentSelection()
1110    
1111          if len(sel) == 1:          if len(sel) == 1:
# Line 755  class Classifier(wxDialog): Line 1118  class Classifier(wxDialog):
1118                  table.SetClassGroup(i + 1, x)                  table.SetClassGroup(i + 1, x)
1119                  self.classGrid.ClearSelection()                  self.classGrid.ClearSelection()
1120                  self.classGrid.SelectRow(i + 1)                  self.classGrid.SelectRow(i + 1)
1121                    self.classGrid.MakeCellVisible(i + 1, 0)
1122    
1123        def _OnTitleChanged(self, event):
1124            """Update the dialog title when the user changed the layer name."""
1125            obj = event.GetEventObject()
1126    
1127            self.layer.SetTitle(obj.GetValue())
1128            self.__SetTitle(self.layer.Title())
1129    
1130            self.__EnableButtons(EB_LAYER_TITLE)
1131    
1132        def __EnableButtons(self, case):
1133            """Helper method that enables/disables the appropriate buttons
1134            based on the case provided. Cases are constants beginning with EB_.
1135            """
1136    
1137            list = {wxID_OK                 : True,
1138                    wxID_CANCEL             : True,
1139                    ID_PROPERTY_ADD         : True,
1140                    ID_PROPERTY_MOVEUP      : True,
1141                    ID_PROPERTY_MOVEDOWN    : True,
1142                    ID_PROPERTY_REMOVE      : True,
1143                    ID_PROPERTY_SELECT      : True,
1144                    ID_PROPERTY_FIELDTEXT   : True,
1145                    ID_PROPERTY_GENCLASS    : True,
1146                    ID_PROPERTY_EDITSYM     : True}
1147    
1148            if case == EB_LAYER_TITLE:  
1149                if self.layer.Title() == "":
1150                    list[wxID_OK] = False
1151                    list[wxID_CANCEL] = False
1152    
1153            elif case == EB_SELECT_FIELD:
1154                if self.fields.GetSelection() == 0:
1155                    list[ID_PROPERTY_GENCLASS] = False
1156                    list[ID_PROPERTY_ADD] = False
1157                    list[ID_PROPERTY_MOVEUP] = False
1158                    list[ID_PROPERTY_MOVEDOWN] = False
1159                    list[ID_PROPERTY_REMOVE] = False
1160    
1161            elif case == EB_GEN_CLASS:
1162                if self.genDlg is not None:
1163                    list[ID_PROPERTY_SELECT] = False
1164                    list[ID_PROPERTY_FIELDTEXT] = False
1165                    list[ID_PROPERTY_GENCLASS] = False
1166    
1167            for id, enable in list.items():
1168                win = self.FindWindowById(id)
1169                if win:
1170                    win.Enable(enable)
1171    
 ID_SELPROP_OK = 4001  
 ID_SELPROP_CANCEL = 4002  
1172  ID_SELPROP_SPINCTRL = 4002  ID_SELPROP_SPINCTRL = 4002
1173  ID_SELPROP_PREVIEW = 4003  ID_SELPROP_PREVIEW = 4003
1174  ID_SELPROP_STROKECLR = 4004  ID_SELPROP_STROKECLR = 4004
1175  ID_SELPROP_FILLCLR = 4005  ID_SELPROP_FILLCLR = 4005
1176    ID_SELPROP_STROKECLRTRANS = 4006
1177    ID_SELPROP_FILLCLRTRANS = 4007
1178    
1179  class SelectPropertiesDialog(wxDialog):  class SelectPropertiesDialog(wxDialog):
1180        """Dialog that allows the user to select group properties."""
1181    
1182      def __init__(self, parent, prop, shapeType):      def __init__(self, parent, prop, shapeType):
1183            """Open the dialog with the initial prop properties and shapeType."""
1184    
1185          wxDialog.__init__(self, parent, -1, _("Select Properties"),          wxDialog.__init__(self, parent, -1, _("Select Properties"),
1186                            style = wxRESIZE_BORDER)                            style = wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
1187    
1188          self.prop = ClassGroupProperties(prop)          self.prop = ClassGroupProperties(prop)
1189    
# Line 780  class SelectPropertiesDialog(wxDialog): Line 1195  class SelectPropertiesDialog(wxDialog):
1195          previewBox = wxBoxSizer(wxVERTICAL)          previewBox = wxBoxSizer(wxVERTICAL)
1196          previewBox.Add(wxStaticText(self, -1, _("Preview:")),          previewBox.Add(wxStaticText(self, -1, _("Preview:")),
1197              0, wxALIGN_LEFT | wxALL, 4)              0, wxALIGN_LEFT | wxALL, 4)
1198          self.previewer = ClassDataPreviewer(None, self.prop, shapeType,  
1199                                              self, ID_SELPROP_PREVIEW, (40, 40))          self.previewWin = ClassGroupPropertiesCtrl(
1200          previewBox.Add(self.previewer, 1, wxGROW, 15)              self, ID_SELPROP_PREVIEW, self.prop, shapeType,
1201                (40, 40), wxSIMPLE_BORDER)
1202    
1203            self.previewWin.AllowEdit(False)
1204    
1205            previewBox.Add(self.previewWin, 1, wxGROW | wxALL, 4)
1206    
1207          itemBox.Add(previewBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)          itemBox.Add(previewBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)
1208    
1209          # control box          # control box
1210          ctrlBox = wxBoxSizer(wxVERTICAL)          ctrlBox = wxBoxSizer(wxVERTICAL)
1211          ctrlBox.Add(  
1212              wxButton(self, ID_SELPROP_STROKECLR, "Change Line Color"),          lineColorBox = wxBoxSizer(wxHORIZONTAL)
1213              0, wxALIGN_CENTER_HORIZONTAL | wxALL | wxGROW, 4)          button = wxButton(self, ID_SELPROP_STROKECLR, _("Change Line Color"))
1214            button.SetFocus()
1215            lineColorBox.Add(button, 1, wxALL | wxGROW, 4)
1216          EVT_BUTTON(self, ID_SELPROP_STROKECLR, self._OnChangeLineColor)          EVT_BUTTON(self, ID_SELPROP_STROKECLR, self._OnChangeLineColor)
1217    
1218            lineColorBox.Add(
1219                wxButton(self, ID_SELPROP_STROKECLRTRANS, _("Transparent")),
1220                1, wxALL | wxGROW, 4)
1221            EVT_BUTTON(self, ID_SELPROP_STROKECLRTRANS,
1222                       self._OnChangeLineColorTrans)
1223    
1224            ctrlBox.Add(lineColorBox, 0,
1225                        wxALIGN_CENTER_HORIZONTAL | wxALL | wxGROW, 4)
1226    
1227          if shapeType != SHAPETYPE_ARC:          if shapeType != SHAPETYPE_ARC:
1228              ctrlBox.Add(              fillColorBox = wxBoxSizer(wxHORIZONTAL)
1229                  wxButton(self, ID_SELPROP_FILLCLR, "Change Fill Color"),              fillColorBox.Add(
1230                  0, wxALIGN_LEFT | wxALL | wxGROW, 4)                  wxButton(self, ID_SELPROP_FILLCLR, _("Change Fill Color")),
1231                    1, wxALL | wxGROW, 4)
1232              EVT_BUTTON(self, ID_SELPROP_FILLCLR, self._OnChangeFillColor)              EVT_BUTTON(self, ID_SELPROP_FILLCLR, self._OnChangeFillColor)
1233                fillColorBox.Add(
1234                    wxButton(self, ID_SELPROP_FILLCLRTRANS, _("Transparent")),
1235                    1, wxALL | wxGROW, 4)
1236                EVT_BUTTON(self, ID_SELPROP_FILLCLRTRANS,
1237                           self._OnChangeFillColorTrans)
1238                ctrlBox.Add(fillColorBox, 0,
1239                            wxALIGN_CENTER_HORIZONTAL | wxALL | wxGROW, 4)
1240    
1241          spinBox = wxBoxSizer(wxHORIZONTAL)          spinBox = wxBoxSizer(wxHORIZONTAL)
1242          spinBox.Add(wxStaticText(self, -1, _("Line Width: ")),          spinBox.Add(wxStaticText(self, -1, _("Line Width: ")),
# Line 815  class SelectPropertiesDialog(wxDialog): Line 1254  class SelectPropertiesDialog(wxDialog):
1254          itemBox.Add(ctrlBox, 0, wxALIGN_RIGHT | wxALL | wxGROW, 0)          itemBox.Add(ctrlBox, 0, wxALIGN_RIGHT | wxALL | wxGROW, 0)
1255          topBox.Add(itemBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)          topBox.Add(itemBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)
1256    
   
1257          #          #
1258          # Control buttons:          # Control buttons:
1259          #          #
1260          buttonBox = wxBoxSizer(wxHORIZONTAL)          buttonBox = wxBoxSizer(wxHORIZONTAL)
1261          buttonBox.Add(wxButton(self, ID_CLASSIFY_OK, _("OK")),          button_ok = wxButton(self, wxID_OK, _("OK"))
1262                        0, wxALL, 4)          buttonBox.Add(button_ok, 0, wxRIGHT|wxEXPAND, 10)
1263          buttonBox.Add(wxButton(self, ID_CLASSIFY_CANCEL, _("Cancel")),          buttonBox.Add(wxButton(self, wxID_CANCEL, _("Cancel")),
1264                        0, wxALL, 4)                        0, wxRIGHT|wxEXPAND, 10)
1265          topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 10)          topBox.Add(buttonBox, 0, wxALIGN_RIGHT|wxBOTTOM|wxTOP, 10)
1266    
1267            button_ok.SetDefault()
1268                                                                                                                                                                    
1269          EVT_BUTTON(self, ID_SELPROP_OK, self._OnOK)          #EVT_BUTTON(self, wxID_OK, self._OnOK)
1270          EVT_BUTTON(self, ID_SELPROP_CANCEL, self._OnCancel)          #EVT_BUTTON(self, ID_SELPROP_CANCEL, self._OnCancel)
1271                                                                                                                                                                    
1272          self.SetAutoLayout(true)          self.SetAutoLayout(True)
1273          self.SetSizer(topBox)          self.SetSizer(topBox)
1274          topBox.Fit(self)          topBox.Fit(self)
1275          topBox.SetSizeHints(self)          topBox.SetSizeHints(self)
1276    
1277      def _OnOK(self, event):      def OnOK(self, event):
1278          self.EndModal(wxID_OK)          self.EndModal(wxID_OK)
1279    
1280      def _OnCancel(self, event):      def OnCancel(self, event):
1281          self.EndModal(wxID_CANCEL)          self.EndModal(wxID_CANCEL)
1282    
1283      def _OnSpin(self, event):      def _OnSpin(self, event):
1284          self.prop.SetLineWidth(self.spinCtrl.GetValue())          self.prop.SetLineWidth(self.spinCtrl.GetValue())
1285          self.previewer.Refresh()          self.previewWin.Refresh()
1286    
1287      def __GetColor(self, cur):      def __GetColor(self, cur):
1288          dialog = wxColourDialog(self)          dialog = wxColourDialog(self)
1289          dialog.GetColourData().SetColour(Color2wxColour(cur))          if cur is not Transparent:
1290                dialog.GetColourData().SetColour(Color2wxColour(cur))
1291    
1292          ret = None          ret = None
1293          if dialog.ShowModal() == wxID_OK:          if dialog.ShowModal() == wxID_OK:
1294              ret = wxColour2Color(dialog.GetColourData().GetColour())              ret = wxColour2Color(dialog.GetColourData().GetColour())
# Line 859  class SelectPropertiesDialog(wxDialog): Line 1301  class SelectPropertiesDialog(wxDialog):
1301          clr = self.__GetColor(self.prop.GetLineColor())          clr = self.__GetColor(self.prop.GetLineColor())
1302          if clr is not None:          if clr is not None:
1303              self.prop.SetLineColor(clr)              self.prop.SetLineColor(clr)
1304          self.previewer.Refresh() # XXX: work around, see ClassDataPreviewer          self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1305    
1306        def _OnChangeLineColorTrans(self, event):
1307            self.prop.SetLineColor(Transparent)
1308            self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1309            
1310      def _OnChangeFillColor(self, event):      def _OnChangeFillColor(self, event):
1311          clr = self.__GetColor(self.prop.GetFill())          clr = self.__GetColor(self.prop.GetFill())
1312          if clr is not None:          if clr is not None:
1313              self.prop.SetFill(clr)              self.prop.SetFill(clr)
1314          self.previewer.Refresh() # XXX: work around, see ClassDataPreviewer          self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1315    
1316        def _OnChangeFillColorTrans(self, event):
1317            self.prop.SetFill(Transparent)
1318            self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1319    
1320      def GetClassGroupProperties(self):      def GetClassGroupProperties(self):
1321          return self.prop          return self.prop
1322    
1323    
1324  class ClassDataPreviewer(wxWindow):  class ClassDataPreviewWindow(wxWindow):
1325        """A custom window that draws group properties using the correct shape."""
1326    
1327      def __init__(self, rect, prop, shapeType,      def __init__(self, rect, prop, shapeType,
1328                         parent = None, id = -1, size = wxDefaultSize):                         parent = None, id = -1, size = wxDefaultSize):
1329            """Draws the appropriate shape as specified with shapeType using
1330            prop properities.
1331            """
1332          if parent is not None:          if parent is not None:
1333              wxWindow.__init__(self, parent, id, size=size)              wxWindow.__init__(self, parent, id, (0, 0), size)
1334              EVT_PAINT(self, self._OnPaint)              EVT_PAINT(self, self._OnPaint)
1335    
1336          self.rect = rect          self.rect = rect
1337    
1338          self.prop = prop          self.prop = prop
1339          self.shapeType = shapeType          self.shapeType = shapeType
1340            self.previewer = ClassDataPreviewer()
1341    
1342        def GetProperties():
1343            return self.prop
1344    
1345      def _OnPaint(self, event):      def _OnPaint(self, event):
1346          dc = wxPaintDC(self)          dc = wxPaintDC(self)
# Line 889  class ClassDataPreviewer(wxWindow): Line 1348  class ClassDataPreviewer(wxWindow):
1348          # XXX: this doesn't seem to be having an effect:          # XXX: this doesn't seem to be having an effect:
1349          dc.DestroyClippingRegion()          dc.DestroyClippingRegion()
1350    
1351          self.Draw(dc, None)          if self.rect is None:
1352                w, h = self.GetSize()
1353                rect = wxRect(0, 0, w, h)
1354            else:
1355                rect = self.rect
1356    
1357            self.previewer.Draw(dc, rect, self.prop, self.shapeType)
1358    
1359      def Draw(self, dc, rect, prop = None, shapeType = None):  class ClassDataPreviewer:
1360        """Class that actually draws a group property preview."""
1361    
1362          if prop is None: prop = self.prop      def Draw(self, dc, rect, prop, shapeType):
1363          if shapeType is None: shapeType = self.shapeType  
1364            assert dc is not None
1365            assert isinstance(prop, ClassGroupProperties)
1366    
1367          if rect is None:          if rect is None:
1368              x = y = 0              x = 0
1369              w, h = self.GetClientSizeTuple()              y = 0
1370                w, h = dc.GetSize()
1371          else:          else:
1372              x = rect.GetX()              x = rect.GetX()
1373              y = rect.GetY()              y = rect.GetY()
# Line 906  class ClassDataPreviewer(wxWindow): Line 1375  class ClassDataPreviewer(wxWindow):
1375              h = rect.GetHeight()              h = rect.GetHeight()
1376    
1377          stroke = prop.GetLineColor()          stroke = prop.GetLineColor()
1378          if stroke is Color.None:          if stroke is Transparent:
1379              pen = wxTRANSPARENT_PEN              pen = wxTRANSPARENT_PEN
1380          else:          else:
1381              pen = wxPen(Color2wxColour(stroke),              pen = wxPen(Color2wxColour(stroke),
# Line 914  class ClassDataPreviewer(wxWindow): Line 1383  class ClassDataPreviewer(wxWindow):
1383                          wxSOLID)                          wxSOLID)
1384    
1385          stroke = prop.GetFill()          stroke = prop.GetFill()
1386          if stroke is Color.None:          if stroke is Transparent:
1387              brush = wxTRANSPARENT_BRUSH              brush = wxTRANSPARENT_BRUSH
1388          else:          else:
1389              brush = wxBrush(Color2wxColour(stroke), wxSOLID)              brush = wxBrush(Color2wxColour(stroke), wxSOLID)
# Line 928  class ClassDataPreviewer(wxWindow): Line 1397  class ClassDataPreviewer(wxWindow):
1397                             wxPoint(x + w/2, y + h/4*3),                             wxPoint(x + w/2, y + h/4*3),
1398                             wxPoint(x + w, y)])                             wxPoint(x + w, y)])
1399    
1400          elif shapeType == SHAPETYPE_POINT or \          elif shapeType == SHAPETYPE_POINT:
              shapeType == SHAPETYPE_POLYGON:  
1401    
1402              dc.DrawCircle(x + w/2, y + h/2,              dc.DrawCircle(x + w/2, y + h/2,
1403                            (min(w, h) - prop.GetLineWidth())/2)                            (min(w, h) - prop.GetLineWidth())/2)
1404    
1405            elif shapeType == SHAPETYPE_POLYGON:
1406                dc.DrawRectangle(x, y, w, h)
1407    
1408  class ClassRenderer(wxPyGridCellRenderer):  class ClassRenderer(wxPyGridCellRenderer):
1409        """A wrapper class that can be used to draw group properties in a
1410        grid table.
1411        """
1412    
1413      def __init__(self, shapeType):      def __init__(self, shapeType):
1414          wxPyGridCellRenderer.__init__(self)          wxPyGridCellRenderer.__init__(self)
1415          self.previewer = ClassDataPreviewer(None, None, shapeType)          self.shapeType = shapeType
1416            self.previewer = ClassDataPreviewer()
1417    
1418      def Draw(self, grid, attr, dc, rect, row, col, isSelected):      def Draw(self, grid, attr, dc, rect, row, col, isSelected):
1419          data = grid.GetTable().GetValueAsCustom(row, col, None)          data = grid.GetTable().GetClassGroup(row)
1420    
1421          dc.SetClippingRegion(rect.GetX(), rect.GetY(),          dc.SetClippingRegion(rect.GetX(), rect.GetY(),
1422                               rect.GetWidth(), rect.GetHeight())                               rect.GetWidth(), rect.GetHeight())
# Line 951  class ClassRenderer(wxPyGridCellRenderer Line 1426  class ClassRenderer(wxPyGridCellRenderer
1426                           rect.GetWidth(), rect.GetHeight())                           rect.GetWidth(), rect.GetHeight())
1427    
1428          if not isinstance(data, ClassGroupMap):          if not isinstance(data, ClassGroupMap):
1429              self.previewer.Draw(dc, rect, data.GetProperties())              self.previewer.Draw(dc, rect, data.GetProperties(), self.shapeType)
1430    
1431          if isSelected:          if isSelected:
1432              dc.SetPen(wxPen(wxColour(0 * 255, 0 * 255, 0 * 255),              dc.SetPen(wxPen(wxBLACK, 1, wxSOLID))
                       4, wxSOLID))  
1433              dc.SetBrush(wxTRANSPARENT_BRUSH)              dc.SetBrush(wxTRANSPARENT_BRUSH)
1434    
1435              dc.DrawRectangle(rect.GetX(), rect.GetY(),              dc.DrawRectangle(rect.GetX(), rect.GetY(),
1436                               rect.GetWidth(), rect.GetHeight())                               rect.GetWidth(), rect.GetHeight())
1437    
1438          dc.DestroyClippingRegion()          dc.DestroyClippingRegion()
1439    
1440    
1441    class ClassGroupPropertiesCtrl(wxWindow, wxControl):
1442        """A custom window and control that draw a preview of group properties
1443        and can open a dialog to modify the properties if the user double-clicks
1444        it.
1445        """
1446    
1447        def __init__(self, parent, id, props, shapeType,
1448                     size = wxDefaultSize, style = 0):
1449    
1450            wxWindow.__init__(self, parent, id, size = size, style = style)
1451    
1452            self.parent = parent
1453    
1454            self.SetProperties(props)
1455            self.SetShapeType(shapeType)
1456            self.AllowEdit(True)
1457    
1458            EVT_PAINT(self, self._OnPaint)
1459            EVT_LEFT_DCLICK(self, self._OnLeftDClick)
1460    
1461            self.previewer = ClassDataPreviewer()
1462    
1463        def _OnPaint(self, event):
1464            dc = wxPaintDC(self)
1465    
1466            # XXX: this doesn't seem to be having an effect:
1467            dc.DestroyClippingRegion()
1468    
1469            w, h = self.GetClientSize()
1470    
1471            self.previewer.Draw(dc,
1472                                wxRect(0, 0, w, h),
1473                                self.GetProperties(),
1474                                self.GetShapeType())
1475    
1476    
1477        def GetProperties(self):
1478            return self.props
1479    
1480        def SetProperties(self, props):
1481            self.props = props
1482            self.Refresh()
1483    
1484        def GetShapeType(self):
1485            return self.shapeType
1486    
1487        def SetShapeType(self, shapeType):
1488            self.shapeType = shapeType
1489            self.Refresh()
1490    
1491        def AllowEdit(self, allow):
1492            """Allow/Disallow double-clicking on the control."""
1493            self.allowEdit = allow
1494    
1495        def DoEdit(self):
1496            """Open the properties selector dialog."""
1497    
1498            if not self.allowEdit: return
1499    
1500            propDlg = SelectPropertiesDialog(self.parent,
1501                                             self.GetProperties(),
1502                                             self.GetShapeType())
1503    
1504            if propDlg.ShowModal() == wxID_OK:
1505                new_prop = propDlg.GetClassGroupProperties()
1506                self.SetProperties(new_prop)
1507                self.Refresh()
1508    
1509            propDlg.Destroy()
1510    
1511        def _OnLeftDClick(self, event):
1512            self.DoEdit()
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