[Subversion] / Trellis / peak / events / trellis.py  

Diff of /Trellis/peak/events/trellis.py

Parent Directory | Revision Log

version 2476, Sun Jan 6 19:13:24 2008 UTC version 2477, Mon Jan 7 22:40:07 2008 UTC
Line 8 
Line 8 
     'Cell', 'Constant', 'rule', 'rules', 'value', 'values', 'optional',      'Cell', 'Constant', 'rule', 'rules', 'value', 'values', 'optional',
     'todo', 'todos', 'modifier', 'receiver', 'receivers', 'Component',      'todo', 'todos', 'modifier', 'receiver', 'receivers', 'Component',
     'discrete', 'repeat', 'poll', 'InputConflict', 'observer', 'ObserverCell',      'discrete', 'repeat', 'poll', 'InputConflict', 'observer', 'ObserverCell',
     'Dict', 'List', 'Set', 'mark_dirty', 'ctrl',      'Dict', 'List', 'Set', 'mark_dirty', 'ctrl', 'ConstantMixin'
 ]  ]
   
 NO_VALUE = symbols.Symbol('NO_VALUE', __name__)  NO_VALUE = symbols.Symbol('NO_VALUE', __name__)
Line 155 
Line 155 
     for name in [      for name in [
         'on_commit', 'on_undo', 'atomically', 'manage', 'savepoint',          'on_commit', 'on_undo', 'atomically', 'manage', 'savepoint',
         'rollback_to', 'schedule', 'cancel', 'lock', 'used', 'changed',          'rollback_to', 'schedule', 'cancel', 'lock', 'used', 'changed',
         'run_rule', 'change_attr',          'initialize', 'change_attr',
     ]:      ]:
         globals()[name] = getattr(ctrl, name)          globals()[name] = getattr(ctrl, name)
         if name not in __all__: __all__.append(name)          if name not in __all__: __all__.append(name)
Line 180 
Line 180 
                 atomically(schedule, self)                  atomically(schedule, self)
                 return self._value                  return self._value
             else:              else:
                 cancel(self); run_rule(self, False)                  cancel(self); initialize(self)
         if ctrl.current_listener is not None:          if ctrl.current_listener is not None:
             used(self)              used(self)
         return self._value          return self._value
Line 213 
Line 213 
             change_attr(self, '__class__', ConstantRule)              change_attr(self, '__class__', ConstantRule)
   
   
 class _ConstantMixin(AbstractCell):  class ConstantMixin(AbstractCell):
     """A read-only abstract cell"""      """A read-only abstract cell"""
   
     __slots__ = ()      __slots__ = ()
   
     def __setattr__(self, name, value):      def __setattr__(self, name, value):
         """Constants can't be changed"""          """Constants can't be changed"""
           if name == '__class__':
               object.__setattr__(self, name, value)
           else:
         raise AttributeError("Constants can't be changed")          raise AttributeError("Constants can't be changed")
   
     def __repr__(self):      def __repr__(self):
         return "Constant(%r)" % (self.value,)          return "Constant(%r)" % (self.value,)
   
   
 class Constant(_ConstantMixin):  class Constant(ConstantMixin):
     """A pure read-only value"""      """A pure read-only value"""
   
     __slots__ = 'value'      __slots__ = 'value'
Line 241 
Line 244 
   
   
   
   class ConstantRule(ConstantMixin, ReadOnlyCell):
   
   
 class ConstantRule(_ConstantMixin, ReadOnlyCell):  
     """A read-only cell that no longer depends on anything else"""      """A read-only cell that no longer depends on anything else"""
   
     __slots__ = ()      __slots__ = ()
Line 258 
Line 258 
     def run(self):      def run(self):
         """Constants don't run"""          """Constants don't run"""
   
     def __setattr__(self, name, value):  
         """Constants can't be changed"""  
         if name == '__class__':  
             object.__setattr__(self, name, value)  
         else:  
             super(ConstantRule, self).__setattr__(name, value)  
   
   
 class ObserverCell(stm.AbstractListener, AbstractCell):  class ObserverCell(stm.AbstractListener, AbstractCell):
     """Rule that performs non-undoable actions"""      """Rule that performs non-undoable actions"""
Line 285 
Line 278 
   
   
   
   
   
   
   
   
   
   
 class Cell(ReadOnlyCell, Value):  class Cell(ReadOnlyCell, Value):
     """Spreadsheet-like cell with automatic updating"""      """Spreadsheet-like cell with automatic updating"""
   
Line 306 
Line 306 
                 return self._value                  return self._value
             if self._set_by is _sentinel:              if self._set_by is _sentinel:
                 # No value set yet, so we have to run() first                  # No value set yet, so we have to run() first
                 cancel(self); run_rule(self, False)                  cancel(self); initialize(self)
         if ctrl.current_listener is not None:          if ctrl.current_listener is not None:
             used(self)              used(self)
         return self._value          return self._value
Line 598 
Line 598 
         except AttributeError: cells = Cells(ob)          except AttributeError: cells = Cells(ob)
         if isinstance(value, AbstractCell):          if isinstance(value, AbstractCell):
             name = self.__name__              name = self.__name__
             if name in cells and isinstance(cells[name], _ConstantMixin):              if name in cells and isinstance(cells[name], ConstantMixin):
                 raise AttributeError("Can't change a constant")                  raise AttributeError("Can't change a constant")
             cells[name] = value              cells[name] = value
         else:          else:

Generate output suitable for use with a patch program
Legend:
Removed from v.2476  
changed lines
  Added in v.2477
cvs-admin@eby-sarna.com

Powered by ViewCVS 1.0-dev

ViewCVS and CVS Help