def undoLast(self):
if not self.undoStack:
return False
command = self.undoStack[-1]
if command is None or not command.isUndoable:
return False
exc_tb = None
exc_type = None
exc_value = None
# todo need to check against mayas undo?
try:
command.stats = base.CommandStats(command)
cmds.undo()
except errors.UserCancel:
command.stats.finish(None)
return
except Exception:
exc_type, exc_value, exc_tb = sys.exc_info()
traceback.print_exception(exc_type, exc_value, exc_tb)
raise
finally:
tb = None
if exc_type and exc_value and exc_tb:
tb = traceback.format_exception(exc_type, exc_value, exc_tb)
elif command.isUndoable:
self.undoStack.remove(command)
self.redoStack.append(command)
command.stats.finish(tb)
return True
def redoLast(self):
if not self.redoStack:
return
result = None
command = self.redoStack[-1]
if command is None:
return result
exc_tb = None
exc_type = None
exc_value = None
try:
command.stats = base.CommandStats(command)
cmds.redo()
except errors.UserCancel:
command.stats.finish(None)
return
except Exception:
exc_type, exc_value, exc_tb = sys.exc_info()
traceback.print_exception(exc_type, exc_value, exc_tb)
raise
finally:
tb = None
command = self.redoStack.pop()
if exc_type and exc_value and exc_tb:
tb = traceback.format_exception(exc_type, exc_value, exc_tb)
elif command.isUndoable:
self.undoStack.append(command)
command.stats.finish(tb)
return result
def execute(self, commandName=None, **kwargs):
"""Function to execute Zoo commands which lightly wrap maya MPXCommands.
Deals with prepping the Zoo plugin with the command instance. Safely opens and closes the undo chunks via
maya commands (cmds.undoInfo)
:param commandName: The command.id value
:type commandName: str
:param kwargs: A dict of command instance arguments, should much the signature of the command.doit() method
:type kwargs: dict
:return: The command instance returns arguments, up to the command developer
"""
command = self.findCommand(commandName)
if command is None:
raise ValueError(
"No command by the name -> {} exists within the registry!".
format(commandName))
if om2._COMMANDEXECUTOR is None:
om2._COMMANDEXECUTOR = self
command = command()
command._prepareCommand()
if not command.isEnabled:
return
try:
command._resolveArguments(kwargs)
except errors.UserCancel:
raise
except Exception:
raise
exc_tb = None
exc_type = None
exc_value = None
command.stats = base.CommandStats(command)
try:
if command.isUndoable:
cmds.undoInfo(openChunk=True)
om2._ZOOCOMMAND = command
cmds.zooAPIUndo(id=command.id)
except errors.UserCancel:
command.stats.finish(None)
except Exception:
exc_type, exc_value, exc_tb = sys.exc_info()
traceback.print_exception(exc_type, exc_value, exc_tb)
raise
finally:
tb = None
if exc_type and exc_value and exc_tb:
tb = traceback.format_exception(exc_type, exc_value, exc_tb)
if command.isUndoable and not tb:
self.undoStack.append(command)
cmds.undoInfo(closeChunk=True)
command.stats.finish(tb)
return command._returnResult