Enabling/Disabling a menu item

Edit : I do not want to store its reference in a static variable in the menu item class itself.

You can use ActionManager.getInstance().getAction("MyActionId") to get the action or use AnActionEvent.getPresentation().setVisible()/setEnabled() in AnAction.update() call to hide or disable action depending on some condition.

ActionManager.getInstance().getAction("MyActionId") - this will give me the AnAction reference. How to get the presentation associated with it?

AnAction can have multiple presentations (ex: being added to multiple toolbars simultaneously). They can be accessed with AnActionEvent.getPresentation() in update()/actionPerformed() actions.

You can modify presentation defaults using AnAction.getTemplatePresentation().

Could you clarify, why do you need it?

I need to enable the current presentation associated with one AnAction based on project closing. 

I am able to do it using update()  but that does not seem the most suitable way to do it as per my problem. 

So I was thinking of getting the presentation in the project listener and enabling it. 

> but that does not seem the most suitable way to do it as per my problem. 

Why do you think so? If the issue is with "too slow" reaction time, ActionToolbar.updateActionsImmediately() might help.

Is it possible to check currently opened projects during update(), instead of registering listener?

The thing is my problem is to edit the presentation on project closing but I am working with it in update()  which does not really have any relation with project opening or closing. It works when the parent menu or the menu itself is clicked. Secondly it is run repeatedly which is not my requirement. 

So basically its not about slow reaction time,  its just that the solution is not in line with the use case.