Handle Event in JSF custom tag (1.2)

the key for event hanldling in JSF custom tag is the queueEvent() method of the Component.

1. for the input component, you can invoke
    queueEvent(new ValueChangeEvent(this, previous, newValue));
   such as dropdown list tag, in renderer class, you can set onchange="submint()"

    writer.startElement("select", component);
            writer.writeAttribute("name", alComp.getClientId(context), null);
            writer.writeAttribute("id", alComp.getClientId(context), null);
writer.writeAttribute("onchange", "submit()", null);
writer.startElement("option", component);
            writer.writeAttribute("value", "", null);
            writer.write(unselectedLabel);
            writer.endElement("option");
    writer.endElement("select");

2. for command component, if you want action and actionListener make sense, you need to invoke
    queueEvent(new ActionEvent(component));
   in renderer class, you can set onclick="submit()"
   such as commandLink
        writer.startElement("a", component);
        writer.writeAttribute("href", "#", null);
        writer.writeAttribute("onclick", "submit()", null);
        writer.write("CommandLink tag");
        writer.endElement("a");