OverlayPanelTemplate.java

import org.primefaces.util.Constants;

    public static final String STYLE_CLASS = "ui-overlaypanel ui-widget ui-widget-content ui-overlay-hidden ui-corner-all ui-shadow";
    public static final String CONTENT_CLASS = "ui-overlaypanel-content";

    @Override
    public void processDecodes(FacesContext context) {
        if(isRequestSource(context)) {
            this.decode(context);
        }
        else {
            super.processDecodes(context);
        }
    }

    @Override
    public void processValidators(FacesContext context) {
        if(!isRequestSource(context)) {
            super.processValidators(context);
        }
    }

    @Override
    public void processUpdates(FacesContext context) {
        if(!isRequestSource(context)) {
            super.processUpdates(context);
        }
    }

    private boolean isRequestSource(FacesContext context) {
        return this.getClientId(context).equals(context.getExternalContext().getRequestParameterMap().get(Constants.RequestParams.PARTIAL_SOURCE_PARAM));
    }

    public boolean isContentLoadRequest(FacesContext context) {
        return context.getExternalContext().getRequestParameterMap().containsKey(this.getClientId(context) + "_contentLoad");
    }