def reDo(self):
"""
perform a redo operation
"""
self.__logger.debug('reDo')
try:
_activeRedo = self.__UndoDb.dbRedo()
self.__EntityDb.markUndoVisibility(_activeRedo, 1)
self.__EntityDb.performCommit()
self.undoRedoEvent(self, None)
except UndoDb:
raise UndoDb("Generical problem to perform reDo")
def unDo(self):
"""
perform an undo operation
"""
self.__logger.debug('unDo')
try:
self.__EntityDb.markUndoVisibility(self.__UndoDb.getActiveUndoId(),
0)
_newUndo = self.__UndoDb.dbUndo()
self.__EntityDb.performCommit()
self.undoRedoEvent(self, None)
except UndoDb:
raise UndoDb("Generical problem to perform undo")
def __init__(self, dbPath=None):
"""
init of the kernel
"""
self.__logger = logging.getLogger('DbKernel')
self.__logger.debug('__init__')
BaseDb.__init__(self)
# set the events
self.__logger.debug('set events')
self.saveEntityEvent = PyCadEvent()
self.deleteEntityEvent = PyCadEvent()
self.massiveDeleteEvent = PyCadEvent()
self.showEntEvent = PyCadEvent()
self.hideEntEvent = PyCadEvent()
self.updateShowEntEvent = PyCadEvent()
self.undoRedoEvent = PyCadEvent()
self.handledErrorEvent = PyCadEvent()
#create Connection
self.createConnection(dbPath)
# inizialize extentionObject
self.__UndoDb = UndoDb(self.getConnection())
self.__EntityDb = EntityDb(self.getConnection())
self.__RelationDb = RelationDb(self.getConnection())
# Some inizialization parameter
self.__bulkCommit = False
self.__bulkUndoIndex = -1 # undo index are always positive so we do not brake in case missing entity id
self.__entId = self.__EntityDb.getNewEntId()
# set the default style
self.__logger.debug('Set Style')
self.__activeStyleObj = None
self.__activeStyleObj = self.getMainStyle()
self.__settings = self.getDbSettingsObject()
self.__property = {}
#************************
#Inizialize Layer structure
#************************
self.__logger.debug('Inizialize layer structure')
try:
self.__LayerTree = LayerTree(self)
except StructuralError:
raise StructuralError('Unable to create LayerTree structure')
self.__logger.debug('Done inizialization')
