How to create a popup(menu/window) in the actionPerformed event

I just want to make sure there is built widget or not. Or I need to build this widget from scratch.

Action Group: https://plugins.jetbrains.com/docs/intellij/grouping-action.html

Then show popup via com.intellij.openapi.ui.popup.JBPopupFactory#createActionsStep()

Thank you very much, I will have a try