LeadTriggerFinal.apxt

trigger LeadTrigger on Lead (before insert, after insert, before update, after update,
                             before delete, after delete, after undelete) {
    
    if(Trigger.isBefore && Trigger.isInsert) {
        LeadTriggerHandler.handleBeforeInsert(Trigger.new);
    }
    
    if(Trigger.isAfter && Trigger.isInsert) {
        LeadTriggerHandler.handleAfterInsert(Trigger.new);
    }
    
    if(Trigger.isBefore && Trigger.isUpdate) {
        LeadTriggerHandler.handleBeforeUpdate(Trigger.new, Trigger.old,
                                              Trigger.newMap, Trigger.oldMap);
    }
    
    if(Trigger.isAfter && Trigger.isUpdate) {
        LeadTriggerHandler.handleAfterUpdate(Trigger.new, Trigger.old,
                                             Trigger.newMap, Trigger.oldMap);
    }
    
    if(Trigger.isBefore && Trigger.isDelete) {
        LeadTriggerHandler.handleBeforeDelete(Trigger.old);
    }
    
    if(Trigger.isAfter && Trigger.isDelete) {
        LeadTriggerHandler.handleAfterDelete(Trigger.old);
    }
    
    if(Trigger.isAfter && Trigger.isUndelete) {
        LeadTriggerHandler.handleAfterUndelete(Trigger.new);
    } 
}