MyTriggers

public class MyTriggers {
	/* Enum representing all the contexts available */
    public enum Evt {
        afterDelete, afterInsert,afterUndelete,afterUpdate,beforeDelete,beforeInsert,beforeUpdate
    }
    
    public interface Handler{
        void handle();
    }
    
    //Internal Mapping of handlers
    Map<String, List<Handler>> eventHandlerMapping = new Map<String, List<Handler>>();
    
    public MyTriggers attach(Evt event, Handler handler){
        List<Handler> handlers = eventHandlerMapping.get(event.name());
        if(handlers == null){
            handlers = new List<Handler>();
            eventHandlerMapping.put(event.name(),handlers);
        }
        handlers.add(handler);
        return this;
    }
    
    public void run(){
        Evt ev = null;
        if(Trigger.isInsert && Trigger.isBefore){
			ev = Evt.beforeinsert;
		} else if(Trigger.isInsert && Trigger.isAfter){
			ev = Evt.afterinsert;
		} else if(Trigger.isUpdate && Trigger.isBefore){
			ev = Evt.beforeupdate;
		} else if(Trigger.isUpdate && Trigger.isAfter){
			ev = Evt.afterupdate;
		} else if(Trigger.isDelete && Trigger.isBefore){
			ev = Evt.beforedelete;
		} else if(Trigger.isDelete && Trigger.isAfter){
			ev = Evt.afterdelete;
		} else if(Trigger.isundelete){
			ev = Evt.afterundelete;				
		}
        List<Handler> handlers = eventHandlerMapping.get(ev.name());
        if(handlers!=null && !handlers.isEmpty()){
            for(Handler h : handlers){
                h.handle();
            }
        }
    }
}