ToolWindow open close callback.

You can register the ToolWindowManagerListener listener and implement the stateChanged method, which may check:

ToolWindowManager.getInstance(project).getToolWindow(TOOL_WINDOW_ID).isActive

Keep in mind, that this method doesn't distinguish, which TW has changed the state (registering/deregistering TW, focus/blur events) - so it's quite verbose.

However, you can get the isActive state of your particular TW and fire another action when this flag has changed to throttle these events.

Thanks Jakub.

With

(ToolWindowManager.getInstance(project) as ToolWindowManagerEx).addToolWindowManagerListener(object :
    ToolWindowManagerListener {
    override fun stateChanged() {
        super.stateChanged()
        println("# " + toolWindow.isActive)
    }
})

I've managed to achieve what I what although `addToolWindowManagerListener` is marked as deprecated and I didn't find out what is the non-deprecated approach.

You can register such listener within plugin.xml file. Check out our documentation about Plugin Listeners.

Thanks