/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/classification.py
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revision 637 by jonathan, Thu Apr 10 14:35:03 2003 UTC revision 2374 by jan, Sun Oct 3 21:01:31 2004 UTC
# Line 20  See the description of FindGroup() for m Line 20  See the description of FindGroup() for m
20  on the mapping algorithm.  on the mapping algorithm.
21  """  """
22        
23  # fix for people using python2.1  import copy, operator, types
 from __future__ import nested_scopes  
   
 import copy  
24    
25  from Thuban import _  from Thuban import _
26    
 from types import *  
   
27  from messages import \  from messages import \
28      LAYER_PROJECTION_CHANGED, \      LAYER_PROJECTION_CHANGED, \
29      LAYER_LEGEND_CHANGED, \      LAYER_LEGEND_CHANGED, \
30      LAYER_VISIBILITY_CHANGED      LAYER_VISIBILITY_CHANGED,\
31        CLASS_CHANGED
32    
33  from Thuban.Model.color import Color  from Thuban.Model.color import Color, Transparent, Black
34    from Thuban.Model.range import Range
35    
36  import Thuban.Model.layer  import Thuban.Model.layer
37    
38  class Classification:  from Thuban.Lib.connector import Publisher
39    
40    class Classification(Publisher):
41      """Encapsulates the classification of layer.      """Encapsulates the classification of layer.
42            
43      The Classification divides some kind of data into Groups which      The Classification divides some kind of data into Groups which
# Line 46  class Classification: Line 45  class Classification:
45      retrieved by matching data values to the appropriate group.      retrieved by matching data values to the appropriate group.
46      """      """
47    
48      def __init__(self, layer = None, field = None):      def __init__(self):
49          """Initialize a classification.          """Initialize a classification."""
   
         layer -- the Layer object who owns this classification  
   
         field -- the name of the data table field that  
                  is to be used to classify layer properties  
         """  
50    
         self.layer = None  
         self.field = None  
         self.fieldType = None  
51          self.__groups = []          self.__groups = []
52    
         self.__setLayerLock = False  
   
53          self.SetDefaultGroup(ClassGroupDefault())          self.SetDefaultGroup(ClassGroupDefault())
54    
         self.SetLayer(layer)  
         self.SetField(field)  
   
55      def __iter__(self):      def __iter__(self):
56          return ClassIterator(self.__groups)          return ClassIterator(self.__groups)
57    
58      def __deepcopy__(self, memo):      def __deepcopy__(self, memo):
59          clazz = Classification()          clazz = Classification()
60    
         # note: the only thing that isn't copied is the layer reference  
         clazz.field = self.field  
         clazz.fieldType = self.fieldType  
61          clazz.__groups[0] = copy.deepcopy(self.__groups[0])          clazz.__groups[0] = copy.deepcopy(self.__groups[0])
62    
63          for i in range(1, len(self.__groups)):          for i in range(1, len(self.__groups)):
# Line 85  class Classification: Line 67  class Classification:
67    
68      def __SendNotification(self):      def __SendNotification(self):
69          """Notify the layer that this class has changed."""          """Notify the layer that this class has changed."""
70          if self.layer is not None:          self.issue(CLASS_CHANGED)
             self.layer.ClassChanged()  
       
     def SetField(self, field):  
         """Set the name of the data table field to use.  
           
         If there is no layer then the field type is set to None,  
         otherwise the layer is queried to find the type of the  
         field data  
   
         field -- if None then all values map to the default data  
         """  
   
         if field == "":  
             field = None  
   
   
         if field is None:  
             if self.layer is not None:  
                 self.fieldType = None  
         else:  
             if self.layer is not None:  
                 fieldType = self.layer.GetFieldType(field)  
                 if fieldType is None:  
                     raise ValueError("'%s' was not found in the layer's table."  
                                      % self.field)  
   
                 #  
                 # unfortunately we cannot call SetFieldType() because it  
                 # requires the layer to be None  
                 #  
                 self.fieldType = fieldType  
                 #self.SetFieldType(fieldType)  
   
         self.field = field  
   
         self.__SendNotification()  
   
     def GetField(self):  
         """Return the name of the field."""  
         return self.field  
   
     def GetFieldType(self):  
         """Return the field type."""  
         return self.fieldType  
71    
72      def SetFieldType(self, type):      def __getattr__(self, attr):
73          """Set the type of the field used by this classification.          """Generate the compiled classification on demand"""
74            if attr == "_compiled_classification":
75          A ValueError is raised if the owning layer is not None and              self._compile_classification()
76          'type' is different from the current field type.              return self._compiled_classification
77          """          raise AttributeError(attr)
78    
79          if type != self.fieldType:      def _compile_classification(self):
80              if self.layer is not None:          """Generate the compiled classification
81                  raise ValueError()  
82              else:          The compiled classification is a more compact representation of
83                  self.fieldType = type          the classification groups that is also more efficient for
84                  self.__SendNotification()          performing the classification.
85    
86      def SetLayer(self, layer):          The compiled classification is a list of tuples. The first
87          """Set the owning Layer of this classification.          element of the tuple is a string which describes the rest of the
88            tuple. There are two kinds of tuples:
89          A ValueError exception will be thrown either the field or  
90          field type mismatch the information in the layer's table.            'singletons'
91          """  
92                The second element of the tuple is a dictionary which
93          # prevent infinite recursion when calling SetClassification()              combines several consecutive ClassGroupSingleton instances.
94          if self.__setLayerLock: return              The dictionary maps the values of the singletons (as
95                returned by the GetValue() method) to the corresponding
96          self.__setLayerLock = True              group.
97    
98          if layer is None:            'range'
99              if self.layer is not None:  
100                  l = self.layer              The tuple describes a ClassGroupRange instance. The tuples
101                  self.layer = None              second element is a tuple fo the form (lfunc, min, max,
102                  l.SetClassification(None)              rfunc, group) where group is the original group object,
103          else:              lfunc and rfuct are comparison functions and min and max are
104              assert isinstance(layer, Thuban.Model.layer.Layer)              lower and upper bounds of the range. Given a value and such
105                a tuple the group matches if and only if
106              old_layer = self.layer  
107                    lfunc(min, value) and rfunc(max, value)
108              self.layer = layer  
109                is true.
110              try:  
111                  self.SetField(self.GetField()) # this sync's the fieldType          The compiled classification is bound to
112              except ValueError:          self._compile_classification.
113                  self.layer = old_layer          """
114                  self.__setLayerLock = False          compiled = []
115                  raise ValueError          for group in self.__groups[1:]:
116                if isinstance(group, ClassGroupSingleton):
117                    if not compiled or compiled[-1][0] != "singletons":
118                        compiled.append(("singletons", {}))
119                    compiled[-1][1].setdefault(group.GetValue(), group)
120                elif isinstance(group, ClassGroupRange):
121                    left, min, max, right = group.GetRangeTuple()
122                    if left == "[":
123                        lfunc = operator.le
124                    elif left == "]":
125                        lfunc = operator.lt
126                    if right == "[":
127                        rfunc = operator.gt
128                    elif right == "]":
129                        rfunc = operator.ge
130                    compiled.append(("range", (lfunc, min, max, rfunc, group)))
131              else:              else:
132                  self.layer.SetClassification(self)                  raise TypeError("Unknown group type %s", group)
133            self._compiled_classification = compiled
134    
135          self.__setLayerLock = False      def _clear_compiled_classification(self):
136            """Reset the compiled classification.
137    
138      def GetLayer(self):          If will be created on demand when self._compiled_classification
139          """Return the parent layer."""          is accessed again.
         return self.layer  
140    
141            Call this method whenever self.__groups is modified.
142            """
143            try:
144                del self._compiled_classification
145            except:
146                pass
147    
148      #      #
149      # these SetDefault* methods are really only provided for      # these SetDefault* methods are really only provided for
# Line 196  class Classification: Line 156  class Classification:
156    
157          fill -- a Color object.          fill -- a Color object.
158          """          """
         assert isinstance(fill, Color)  
159          self.GetDefaultGroup().GetProperties().SetFill(fill)          self.GetDefaultGroup().GetProperties().SetFill(fill)
160          self.__SendNotification()          self.__SendNotification()
161                    
# Line 209  class Classification: Line 168  class Classification:
168    
169          color -- a Color object.          color -- a Color object.
170          """          """
         assert isinstance(color, Color)  
171          self.GetDefaultGroup().GetProperties().SetLineColor(color)          self.GetDefaultGroup().GetProperties().SetLineColor(color)
172          self.__SendNotification()          self.__SendNotification()
173                    
# Line 222  class Classification: Line 180  class Classification:
180    
181          lineWidth -- an integer > 0.          lineWidth -- an integer > 0.
182          """          """
183          assert isinstance(lineWidth, IntType)          assert isinstance(lineWidth, types.IntType)
184          self.GetDefaultGroup().GetProperties().SetLineWidth(lineWidth)          self.GetDefaultGroup().GetProperties().SetLineWidth(lineWidth)
185          self.__SendNotification()          self.__SendNotification()
186                    
# Line 244  class Classification: Line 202  class Classification:
202    
203          group -- group that the value maps to.          group -- group that the value maps to.
204          """          """
   
205          assert isinstance(group, ClassGroupDefault)          assert isinstance(group, ClassGroupDefault)
206          if len(self.__groups) > 0:          if len(self.__groups) > 0:
207              self.__groups[0] = group              self.__groups[0] = group
208          else:          else:
209              self.__groups.append(group)              self.__groups.append(group)
210            self.__SendNotification()
211    
212      def GetDefaultGroup(self):      def GetDefaultGroup(self):
213          """Return the default group."""          """Return the default group."""
# Line 264  class Classification: Line 222  class Classification:
222          self.InsertGroup(self.GetNumGroups(), item)          self.InsertGroup(self.GetNumGroups(), item)
223    
224      def InsertGroup(self, index, group):      def InsertGroup(self, index, group):
           
225          assert isinstance(group, ClassGroup)          assert isinstance(group, ClassGroup)
   
226          self.__groups.insert(index + 1, group)          self.__groups.insert(index + 1, group)
227            self._clear_compiled_classification()
228          self.__SendNotification()          self.__SendNotification()
229    
230      def RemoveGroup(self, index):      def RemoveGroup(self, index):
231          return self.__groups.pop(index + 1)          """Remove the classification group with the given index"""
232            self.__groups.pop(index + 1)
233            self._clear_compiled_classification()
234            self.__SendNotification()
235    
236      def ReplaceGroup(self, index, group):      def ReplaceGroup(self, index, group):
237          assert isinstance(group, ClassGroup)          assert isinstance(group, ClassGroup)
   
238          self.__groups[index + 1] = group          self.__groups[index + 1] = group
239            self._clear_compiled_classification()
240          self.__SendNotification()          self.__SendNotification()
241    
242      def GetGroup(self, index):      def GetGroup(self, index):
# Line 288  class Classification: Line 246  class Classification:
246          """Return the number of non-default groups in the classification."""          """Return the number of non-default groups in the classification."""
247          return len(self.__groups) - 1          return len(self.__groups) - 1
248    
   
249      def FindGroup(self, value):      def FindGroup(self, value):
250          """Return the associated group, or the default group.          """Return the group that matches the value.
251    
252          Groups are checked in the order the were added to the          Groups are effectively checked in the order the were added to
253          Classification.          the Classification.
254    
255          value -- the value to classify. If there is no mapping,          value -- the value to classify. If there is no mapping or value
256                   the field is None or value is None,                   is None, return the default properties
                  return the default properties  
257          """          """
258    
259          if self.GetField() is not None and value is not None:          if value is not None:
260                for typ, params in self._compiled_classification:
261              for i in range(1, len(self.__groups)):                  if typ == "singletons":
262                  group = self.__groups[i]                      group = params.get(value)
263                  if group.Matches(value):                      if group is not None:
264                      return group                          return group
265                    elif typ == "range":
266                        lfunc, min, max, rfunc, g = params
267                        if lfunc(min, value) and rfunc(max, value):
268                            return g
269    
270          return self.GetDefaultGroup()          return self.GetDefaultGroup()
271    
# Line 327  class Classification: Line 287  class Classification:
287          items = []          items = []
288    
289          def build_color_item(text, color):          def build_color_item(text, color):
290              if color is Color.Transparent:              if color is Transparent:
291                  return ("%s: %s" % (text, _("None")), None)                  return ("%s: %s" % (text, _("None")), None)
292    
293              return ("%s: (%.3f, %.3f, %.3f)" %              return ("%s: (%.3f, %.3f, %.3f)" %
# Line 354  class Classification: Line 314  class Classification:
314          for p in self:          for p in self:
315              items.append(build_item(p, p.GetDisplayText()))              items.append(build_item(p, p.GetDisplayText()))
316    
 #           if isinstance(p, ClassGroupDefault):  
 #               items.append(build_item(self.GetDefaultGroup(), _("'DEFAULT'")))  
 #           elif isinstance(p, ClassGroupSingleton):  
 #               items.append(build_item(p, str(p.GetValue())))  
 #           elif isinstance(p, ClassGroupRange):  
 #               items.append(build_item(p, "%s - %s" %  
 #                                          (p.GetMin(), p.GetMax())))  
   
317          return (_("Classification"), items)          return (_("Classification"), items)
318    
319  class ClassIterator:  class ClassIterator:
320      """Allows the Groups in a Classifcation to be interated over.      """Allows the Groups in a Classifcation to be interated over.
321    
# Line 375  class ClassIterator: Line 327  class ClassIterator:
327          """Constructor.          """Constructor.
328    
329          default -- the default group          default -- the default group
330    
331          points -- a list of singleton groups          points -- a list of singleton groups
332    
333          ranges -- a list of range groups          ranges -- a list of range groups
334    
335          maps -- a list of map groups          maps -- a list of map groups
336          """          """
337    
338          self.data = data #[default, points, ranges, maps]          self.data = data
339          self.data_index = 0          self.data_index = 0
         #self.data_iter = iter(self.data)  
         #self.iter = None  
340    
341      def __iter__(self):      def __iter__(self):
342          return self          return self
# Line 400  class ClassIterator: Line 350  class ClassIterator:
350              d = self.data[self.data_index]              d = self.data[self.data_index]
351              self.data_index += 1              self.data_index += 1
352              return d              return d
353            
 #       if self.iter is None:  
 #           try:  
 #               self.data_item = self.data_iter.next()  
 #               self.iter = iter(self.data_item)  
 #           except TypeError:  
 #               return self.data_item  
   
 #       try:  
 #           return self.iter.next()  
 #       except StopIteration:  
 #           self.iter = None  
 #           return self.next()  
         
354  class ClassGroupProperties:  class ClassGroupProperties:
355      """Represents the properties of a single Classification Group.      """Represents the properties of a single Classification Group.
356      
357      These are used when rendering a layer."""      These are used when rendering a layer."""
358    
359        # TODO: Actually, size is only relevant for point objects.
360        # Eventually it should be spearated, e.g. when introducing symbols.
361    
362      def __init__(self, props = None):      def __init__(self, props = None):
363          """Constructor.          """Constructor.
364    
365          props -- a ClassGroupProperties object. The class is copied if          props -- a ClassGroupProperties object. The class is copied if
366                   prop is not None. Otherwise, a default set of properties                   prop is not None. Otherwise, a default set of properties
367                   is created such that: line color = Color.Black, line width = 1,                   is created such that: line color = Black, line width = 1,
368                   and fill color = Color.Transparent                   size = 5 and fill color = Transparent
369          """          """
370    
         #self.stroke = None  
         #self.strokeWidth = 0  
         #self.fill = None  
   
371          if props is not None:          if props is not None:
372              self.SetProperties(props)              self.SetProperties(props)
373          else:          else:
374              self.SetLineColor(Color.Black)              self.SetLineColor(Black)
375              self.SetLineWidth(1)              self.SetLineWidth(1)
376              self.SetFill(Color.Transparent)              self.SetSize(5)
377                self.SetFill(Transparent)
378    
379      def SetProperties(self, props):      def SetProperties(self, props):
380          """Set this class's properties to those in class props."""          """Set this class's properties to those in class props."""
# Line 445  class ClassGroupProperties: Line 382  class ClassGroupProperties:
382          assert isinstance(props, ClassGroupProperties)          assert isinstance(props, ClassGroupProperties)
383          self.SetLineColor(props.GetLineColor())          self.SetLineColor(props.GetLineColor())
384          self.SetLineWidth(props.GetLineWidth())          self.SetLineWidth(props.GetLineWidth())
385            self.SetSize(props.GetSize())
386          self.SetFill(props.GetFill())          self.SetFill(props.GetFill())
387            
388      def GetLineColor(self):      def GetLineColor(self):
389          """Return the line color as a Color object."""          """Return the line color as a Color object."""
390          return self.stroke          return self.__stroke
391    
392      def SetLineColor(self, color):      def SetLineColor(self, color):
393          """Set the line color.          """Set the line color.
# Line 457  class ClassGroupProperties: Line 395  class ClassGroupProperties:
395          color -- the color of the line. This must be a Color object.          color -- the color of the line. This must be a Color object.
396          """          """
397    
398          assert isinstance(color, Color)          self.__stroke = color
         self.stroke = color  
399    
400      def GetLineWidth(self):      def GetLineWidth(self):
401          """Return the line width."""          """Return the line width."""
402          return self.strokeWidth          return self.__strokeWidth
403    
404      def SetLineWidth(self, lineWidth):      def SetLineWidth(self, lineWidth):
405          """Set the line width.          """Set the line width.
406    
407          lineWidth -- the new line width. This must be > 0.          lineWidth -- the new line width. This must be > 0.
408          """          """
409          assert isinstance(lineWidth, IntType)          assert isinstance(lineWidth, types.IntType)
410          if (lineWidth < 1):          if (lineWidth < 1):
411              raise ValueError(_("lineWidth < 1"))              raise ValueError(_("lineWidth < 1"))
412    
413          self.strokeWidth = lineWidth          self.__strokeWidth = lineWidth
414    
415        def GetSize(self):
416            """Return the size."""
417            return self.__size
418    
419        def SetSize(self, size):
420            """Set the size.
421    
422            size -- the new size. This must be > 0.
423            """
424            assert isinstance(size, types.IntType)
425            if (size < 1):
426                raise ValueError(_("size < 1"))
427    
428            self.__size = size
429    
430      def GetFill(self):      def GetFill(self):
431          """Return the fill color as a Color object."""          """Return the fill color as a Color object."""
432          return self.fill          return self.__fill
433    
434      def SetFill(self, fill):      def SetFill(self, fill):
435          """Set the fill color.          """Set the fill color.
436    
437          fill -- the color of the fill. This must be a Color object.          fill -- the color of the fill. This must be a Color object.
438          """          """
439    
440          assert isinstance(fill, Color)          self.__fill = fill
         self.fill = fill  
441    
442      def __eq__(self, other):      def __eq__(self, other):
443          """Return true if 'props' has the same attributes as this class"""          """Return true if 'props' has the same attributes as this class"""
444    
445            #
446            # using 'is' over '==' results in a huge performance gain
447            # in the renderer
448            #
449          return isinstance(other, ClassGroupProperties)   \          return isinstance(other, ClassGroupProperties)   \
450              and self.stroke      == other.GetLineColor() \              and (self.__stroke is other.__stroke or      \
451              and self.strokeWidth == other.GetLineWidth() \                   self.__stroke == other.__stroke)        \
452              and self.fill        == other.GetFill()              and (self.__fill is other.__fill or          \
453                     self.__fill == other.__fill)            \
454                and self.__strokeWidth == other.__strokeWidth\
455                and self.__size == other.__size
456    
457      def __ne__(self, other):      def __ne__(self, other):
458          return not self.__eq__(other)          return not self.__eq__(other)
# Line 505  class ClassGroupProperties: Line 463  class ClassGroupProperties:
463      def __deepcopy__(self):      def __deepcopy__(self):
464          return ClassGroupProperties(self)          return ClassGroupProperties(self)
465    
466        def __repr__(self):
467            return repr((self.__stroke, self.__strokeWidth, self.__size,
468                        self.__fill))
469    
470  class ClassGroup:  class ClassGroup:
471      """A base class for all Groups within a Classification"""      """A base class for all Groups within a Classification"""
472    
# Line 526  class ClassGroup: Line 488  class ClassGroup:
488      def GetLabel(self):      def GetLabel(self):
489          """Return the Group's label."""          """Return the Group's label."""
490          return self.label          return self.label
491    
492      def SetLabel(self, label):      def SetLabel(self, label):
493          """Set the Group's label.          """Set the Group's label.
494    
495          label -- a string representing the Group's label. This must          label -- a string representing the Group's label. This must
496                   not be None.                   not be None.
497          """          """
498          assert isinstance(label, StringType)          assert isinstance(label, types.StringTypes)
499          self.label = label          self.label = label
500    
501      def GetDisplayText(self):      def GetDisplayText(self):
# Line 572  class ClassGroup: Line 534  class ClassGroup:
534    
535      def __eq__(self, other):      def __eq__(self, other):
536          return isinstance(other, ClassGroup) \          return isinstance(other, ClassGroup) \
537                and self.label == other.label \
538              and self.GetProperties() == other.GetProperties()              and self.GetProperties() == other.GetProperties()
539    
540      def __ne__(self, other):      def __ne__(self, other):
541          return not self.__eq__(other)          return not self.__eq__(other)
542    
543        def __repr__(self):
544            return repr(self.label) + ", " + repr(self.GetProperties())
545            
546  class ClassGroupSingleton(ClassGroup):  class ClassGroupSingleton(ClassGroup):
547      """A Group that is associated with a single value."""      """A Group that is associated with a single value."""
# Line 605  class ClassGroupSingleton(ClassGroup): Line 570  class ClassGroupSingleton(ClassGroup):
570    
571      def GetValue(self):      def GetValue(self):
572          """Return the associated value."""          """Return the associated value."""
573          return self.value          return self.__value
574    
575      def SetValue(self, value):      def SetValue(self, value):
576          """Associate this Group with the given value."""          """Associate this Group with the given value."""
577          self.value = value          self.__value = value
578    
579      def Matches(self, value):      def Matches(self, value):
580          """Determine if the given value matches the associated Group value."""          """Determine if the given value matches the associated Group value."""
581    
582          """Returns True if the value matches, False otherwise."""          """Returns True if the value matches, False otherwise."""
583    
584          return self.value == value          return self.__value == value
585    
586      def GetDisplayText(self):      def GetDisplayText(self):
587          label = self.GetLabel()          label = self.GetLabel()
# Line 628  class ClassGroupSingleton(ClassGroup): Line 593  class ClassGroupSingleton(ClassGroup):
593      def __eq__(self, other):      def __eq__(self, other):
594          return ClassGroup.__eq__(self, other) \          return ClassGroup.__eq__(self, other) \
595              and isinstance(other, ClassGroupSingleton) \              and isinstance(other, ClassGroupSingleton) \
596              and self.GetValue() == other.GetValue()              and self.__value == other.__value
597    
598        def __repr__(self):
599            return "(" + repr(self.__value) + ", " + ClassGroup.__repr__(self) + ")"
600    
601  class ClassGroupDefault(ClassGroup):  class ClassGroupDefault(ClassGroup):
602      """The default Group. When values do not match any other      """The default Group. When values do not match any other
# Line 667  class ClassGroupDefault(ClassGroup): Line 635  class ClassGroupDefault(ClassGroup):
635              and isinstance(other, ClassGroupDefault) \              and isinstance(other, ClassGroupDefault) \
636              and self.GetProperties() == other.GetProperties()              and self.GetProperties() == other.GetProperties()
637    
638        def __repr__(self):
639            return "(" + ClassGroup.__repr__(self) + ")"
640    
641  class ClassGroupRange(ClassGroup):  class ClassGroupRange(ClassGroup):
642      """A Group that represents a range of values that map to the same      """A Group that represents a range of values that map to the same
643         set of properties."""         set of properties."""
644    
645      def __init__(self, min = 0, max = 1, props = None, label = "", group=None):      def __init__(self, _range = (0,1), props = None, label = "", group=None):
646          """Constructor.          """Constructor.
647    
648          The minumum value must be strictly less than the maximum.          The minumum value must be strictly less than the maximum.
649    
650          min -- the minimum range value          _range -- either a tuple (min, max) where min < max or
651                      a Range object
         max -- the maximum range value  
652    
653          prop -- a ClassGroupProperites object. If prop is None a default          prop -- a ClassGroupProperites object. If prop is None a default
654                   set of properties is created.                   set of properties is created.
# Line 686  class ClassGroupRange(ClassGroup): Line 656  class ClassGroupRange(ClassGroup):
656          label -- a label for this group.          label -- a label for this group.
657          """          """
658    
659          ClassGroup.__init__(self, label, props, None)          ClassGroup.__init__(self, label, props, group)
660            self.SetRange(_range)
         self.min = self.max = 0  
   
         self.SetRange(min, max)  
661    
662      def __copy__(self):      def __copy__(self):
663          return ClassGroupRange(self.GetMin(),          return ClassGroupRange(self.__range,
664                                 self.GetMax(),                                 props = self.GetProperties(),
665                                 self.GetProperties(),                                 label = self.GetLabel())
                                self.GetLabel())  
666    
667      def __deepcopy__(self, memo):      def __deepcopy__(self, memo):
668          return ClassGroupRange(copy.copy(self.GetMin()),          return ClassGroupRange(copy.copy(self.__range),
                                copy.copy(self.GetMax()),  
669                                 group = self)                                 group = self)
670    
671      def GetMin(self):      def GetMin(self):
672          """Return the range's minimum value."""          """Return the range's minimum value."""
673          return self.min          return self.__range.GetRange()[1]
674    
675      def SetMin(self, min):      def SetMin(self, min):
676          """Set the range's minimum value.          """Set the range's minimum value.
# Line 714  class ClassGroupRange(ClassGroup): Line 679  class ClassGroupRange(ClassGroup):
679                 maximum value. Use SetRange() to change both min and max values.                 maximum value. Use SetRange() to change both min and max values.
680          """          """
681            
682          self.SetRange(min, self.max)          self.SetRange((min, self.__range.GetRange()[2]))
683    
684      def GetMax(self):      def GetMax(self):
685          """Return the range's maximum value."""          """Return the range's maximum value."""
686          return self.max          return self.__range.GetRange()[2]
687    
688      def SetMax(self, max):      def SetMax(self, max):
689          """Set the range's maximum value.          """Set the range's maximum value.
# Line 726  class ClassGroupRange(ClassGroup): Line 691  class ClassGroupRange(ClassGroup):
691          max -- the new maximum. Note that this must be greater than the current          max -- the new maximum. Note that this must be greater than the current
692                 minimum value. Use SetRange() to change both min and max values.                 minimum value. Use SetRange() to change both min and max values.
693          """          """
694          self.SetRange(self.min, max)          self.SetRange((self.__range.GetRange()[1], max))
695    
696      def SetRange(self, min, max):      def SetRange(self, _range):
697          """Set a new range.          """Set a new range.
698    
699          Note that min must be strictly less than max.          _range -- Either a tuple (min, max) where min < max or
700                      a Range object.
701    
702          min -- the new minimum value          Raises ValueError on error.
         min -- the new maximum value  
703          """          """
704    
705          if min >= max:          if isinstance(_range, Range):
706              raise ValueError(_("ClassGroupRange: %i(min) >= %i(max)!") %              self.__range = _range
707                               (min, max))          elif isinstance(_range, types.TupleType) and len(_range) == 2:
708          self.min = min              self.__range = Range(("[", _range[0], _range[1], "["))
709          self.max = max          else:
710                raise ValueError()
711    
712      def GetRange(self):      def GetRange(self):
713          """Return the range as a tuple (min, max)"""          """Return the range as a string"""
714          return (self.min, self.max)          return self.__range.string(self.__range.GetRange())
715    
716        def GetRangeTuple(self):
717            return self.__range.GetRange()
718    
719      def Matches(self, value):      def Matches(self, value):
720          """Determine if the given value lies with the current range.          """Determine if the given value lies with the current range.
# Line 753  class ClassGroupRange(ClassGroup): Line 722  class ClassGroupRange(ClassGroup):
722          The following check is used: min <= value < max.          The following check is used: min <= value < max.
723          """          """
724    
725          return self.min <= value < self.max          return operator.contains(self.__range, value)
726    
727      def GetDisplayText(self):      def GetDisplayText(self):
728          label = self.GetLabel()          label = self.GetLabel()
729    
730          if label != "": return label          if label != "": return label
731    
732          return _("%s - %s") % (self.GetMin(), self.GetMax())          return self.__range.string(self.__range.GetRange())
733    
734      def __eq__(self, other):      def __eq__(self, other):
735          return ClassGroup.__eq__(self, other) \          return ClassGroup.__eq__(self, other) \
736              and isinstance(other, ClassGroupRange) \              and isinstance(other, ClassGroupRange) \
737              and self.GetRange() == other.GetRange()              and self.__range == other.__range
738    
739        def __repr__(self):
740            return "(" + str(self.__range) + ClassGroup.__repr__(self) + ")"
741    
742  class ClassGroupMap(ClassGroup):  class ClassGroupMap(ClassGroup):
743      """Currently, this class is not used."""      """Currently, this class is not used."""
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