Get the action command of the previous custom tool used

[likage]

I have run a custom tool in a maya scene.

Say, if I am going to perform `z` (undo) via the keyboard, I would want to set the evaluation mode to be 'off' if the previous action is/ belongs to my custom tool.

I tried using `cmds.scriptJob(listJobs=True)`, while the entire contents are somewhat similar, before/ after using the undo key, with the exception of the last line, I am unable to script in a proper manner that will sets off the evaluation mode.

What any other ways can I proceed with this?

[Marcus Ottosson]

Challenging!

I would want to set the evaluation mode to be ‘off’ if the previous action is/ belongs to my custom tool.

If you want to perform a specific command on undo, you could implement your tool as a Maya Command.

from maya import cmds
import myTool
myTool.install()
cmds.myTool()
# "Doing!"
# (press z)
# "Undoing.."

myTool.py

from maya import cmds
from maya.api import OpenMaya as om

class MyTool(om.MPxCommand):
    def doIt(self, args):
        print("Doing!")

    def undoIt(self):
        print("Undoing..")

    def redoIt(self):
        print("Redoing!")

    def isUndoable(self):
        # Without this, the above undoIt and redoIt will not be called
        return True

maya_useNewAPI = True

def initializePlugin(plugin):
    om.MFnPlugin(plugin).registerCommand("myTool", MyTool)

def uninitializePlugin(plugin):
    om.MFnPlugin(plugin).deregisterCommand("myTool")

def install():
    # Load command on `import myTool`
    cmds.loadPlugin(__file__)

If you put e.g. cmds.evaluationManager(mode="off") in the undoIt method, then whenever you undo this particular command, it’ll turn off (which is another word for DG) the evaluation manager.

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[likage]

Hi Marcus,

Many thanks for getting back! I will give it a try.

For my case and your solution, is making my tool the plugin the only way to go?

Additionally, regarding your code, where does "initializePlugin" and "uninitializePlugin" are called? Is it a default function that is handled by install()?