Detect F5 or reload and always send it home. JSF

I need to know if there is any way to identify when a user reloads the page using f5 or update the browser button to schedule an action and that it always redirects to the homepage.

I am using a phase listener where I can compare before loading each page the id of the view and compare them if they are the same I do a re address to the navigation rule of the home.

The problem with this method is that they do not differ when I update, when the page is reloaded with Ajax , for example in the pager of a table.

Is there any option in which I can identify if the recharge comes from ajax or if it comes from f5 or browser update button?

This is the code of the listener . Thanks

import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;

@SuppressWarnings("serial")
public class PostRedirectGetListener implements PhaseListener {
private String previousPage = null;

public PhaseId getPhaseId() {

    return PhaseId.RENDER_RESPONSE;
}

public void beforePhase(PhaseEvent event) {

    String msg = "";
    UIViewRoot viewRoot = FacesContext.getCurrentInstance().getViewRoot();
    String id = viewRoot.getViewId();       
    if (previousPage == null) {
        msg = "First page ever";
    } else if (previousPage.equals(id)) {
        msg = "F5 or reload";
        FacesContext facesContext = FacesContext.getCurrentInstance();
        String outcome = "urlHome";
        facesContext.getApplication().getNavigationHandler()
                .handleNavigation(facesContext, null, outcome);
    } else if (FacesContext.getCurrentInstance().isPostback()) {
        msg = "It's a postback";
    } else
        msg = "It's a navigation";
    previousPage = id;
    System.out.println(msg);
}


public void afterPhase(PhaseEvent event) {

}

}