scriptJob event for referenceUnloaded

[Kyle Burris]

I'm trying to trigger a UI refresh function when a referenced file is loaded and unloaded. The 'PostSceneRead' scriptJob event works great for loading, but I can't find a way to trigger a command when a reference is unloaded. I tired putting attributeChanged on a bunch of different attrs on the referenceNode, but that didn't work.

I stumbled on something online where someone was suggesting taking an attribute from a referenced node and then attaching a scriptJob to it with the attributeDeleted event. However since the files might not share any common attributes I'd have to randomly select a node.attr per referenced file and attach a scriptJob to it. That approach could work but seems clunky to me.

Anyone have any ideas?

Thanks,
Kyle

[Nicolas Combecave]

Recently, I used those two methods in a class creating an ui.
Maybe you could use them to get started...
RegisterCallbacks should be passed the string value of your main ui window I guess, even if it should work with any other type of ui element.

import maya.OpenMayaUI as omUI
import maya.OpenMaya as om

def theCallback(*args):
    pass

def registerCallbacks(attachCbToThisUi):
    createdCallBacks = []
    createdCallBacks.append(om.MSceneMessage.addCallback(om.MSceneMessage.kAfterCreateReference, theCallback, 'someData'))
    createdCallBacks.append(om.MSceneMessage.addCallback(om.MSceneMessage.kAfterLoadReference,   theCallback, 'someData'))
    createdCallBacks.append(om.MSceneMessage.addCallback(om.MSceneMessage.kAfterRemoveReference, theCallback, 'someData'))
    createdCallBacks.append(om.MSceneMessage.addCallback(om.MSceneMessage.kAfterUnloadReference, theCallback, 'someData'))

    omUI.MUiMessage.addUiDeletedCallback(attachCbToThisUi, removeCallbacks, createdCallBacks)

    return createdCallBacks

def removeCallbacks(cbIdsToRemove):
    for cbId in cbIdsToRemove:
        om.MMessage.removeCallback(cbId)

​

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[Nicolas Combecave]

Hi Kyle,

Any success with those callbacks?

[Kyle Burris]

Hi Combi,

Thanks for the reply, that looks really useful. I've had this page open as a tab in firefox for a week now, but production priorities changed and I haven't been able to touch the tool I was working on. I'll make a point of replying here once I get the time to take a stab at it.

Thanks again

[Nicolas Combecave]

Yeah, I understand, job priorities are sometimes very pressing!

What I could say is that once you touch maya Python API, difficult to come back from it!

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[Kyle Burris]

I finally had some time today to give this a go.

The kAfterUnloadReference worked great, but i found that the addUIDeletedCallBack only worked when the ui was deleted with code, and not when the X close button was pressed. So I was having a problem with callback trying to refresh a ui that wasn't there. Apparently when the X close button is clicked the ui is hidden, I think it still exists in some capacity, but was still causing my refresh function to fail. To get around this I got rid of the addUIDeletedCallBack and overrided the qt hideEvent function, and had that call removeCallbacks.

Thanks again for the help
Kyle

On Tuesday, December 8, 2015 at 2:27:22 PM UTC-5, combi wrote:

Yeah, I understand, job priorities are sometimes very pressing!

What I could say is that once you touch maya Python API, difficult to come back from it!

Le mardi 8 décembre 2015, Kyle Burris <kyleb...@gmail.com> a écrit :

Hi Combi,

Thanks for the reply, that looks really useful. I've had this page open as a tab in firefox for a week now, but production priorities changed and I haven't been able to touch the tool I was working on. I'll make a point of replying here once I get the time to take a stab at it.

Thanks again

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[Nicolas Combecave]

Glad it helped, Kyle!

2016-01-26 17:48 GMT+01:00 Kyle Burris <kyleb...@gmail.com>:

I finally had some time today to give this a go.

The kAfterUnloadReference worked great, but i found that the addUIDeletedCallBack only worked when the ui was deleted with code, and not when the X close button was pressed. So I was having a problem with callback trying to refresh a ui that wasn't there. Apparently when the X close button is clicked the ui is hidden, I think it still exists in some capacity, but was still causing my refresh function to fail. To get around this I got rid of the addUIDeletedCallBack and overrided the qt hideEvent function, and had that call removeCallbacks.

Thanks again for the help
Kyle

On Tuesday, December 8, 2015 at 2:27:22 PM UTC-5, combi wrote:

Yeah, I understand, job priorities are sometimes very pressing!

What I could say is that once you touch maya Python API, difficult to come back from it!

Le mardi 8 décembre 2015, Kyle Burris <kyleb...@gmail.com> a écrit :

Hi Combi,

Thanks for the reply, that looks really useful. I've had this page open as a tab in firefox for a week now, but production priorities changed and I haven't been able to touch the tool I was working on. I'll make a point of replying here once I get the time to take a stab at it.

Thanks again

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