trigger ObjectTrigger on Object__c(before insert, after insert, before update, after update, before delete, after delete, after undelete) {
  ObjectTriggerHandler handler = new ObjectTriggerHandler(Trigger.isExecuting, Trigger.size);
  if(Trigger.isInsert) {
    if(Trigger.isBefore) {
      handler.OnBeforeInsert(Trigger.new);
    } else if(Trigger.isAfter) {
      handler.OnAfterInsert(Trigger.new);
    }
  } else if(Trigger.isUpdate) {
    if(Trigger.isBefore) {
      handler.OnBeforeUpdate(Trigger.old, Trigger.new, Trigger.newMap);
    } else if(Trigger.isAfter) {
      handler.OnAfterUpdate(Trigger.old, Trigger.new, Trigger.newMap);
    }
  } else if(Trigger.isDelete) {
    if(Trigger.isBefore) {
      handler.OnBeforeDelete(Trigger.old, Trigger.oldMap);
    } else if(Trigger.isAfter) {
      handler.OnAfterDelete(Trigger.old, Trigger.oldMap);
    }
  } else if(Trigger.isUndelete) {
    handler.OnAfterUndelete(Trigger.new);
  }
}

public with sharing class ObjectTriggerHandler {
  private boolean m_isExecuting = false;
  private Integer batchSize = 0;
  
  public ObjectTriggerHandler(boolean isExecuting, Integer size) {
    m_isExecuting = isExecuting;
    batchSize = size;
  }
  public void OnBeforeInsert(Object__c[] newObjects) {
    // TODO:LOGIC
  }
  public void OnAfterInsert(Object__c[] newObjects) {
    // TODO:LOGIC
  }
  public void OnBeforeUpdate(Object__c[] oldObjects, Object__c[] newObjects, Map newMap) {
    // TODO:LOGIC
  }
  public void OnAfterUpdate(Object__c[] oldObjects, Object__c[] newObjects, Map newMap) {
    // TODO:LOGIC
  }
  public void OnBeforeDelete(Object__c[] delObjects) {
    // TODO:LOGIC
  }
  public void OnAfterDelete(Object__c[] delObjects) {
    // TODO:LOGIC
  }
  public void OnAfterUndelete(Object__c[] restoredObjects) {
    // TODO:LOGIC
  }
  public boolean IsTriggerContext{
    get{ return m_isExecuting; }
  }
}