/**
* Observer for models
* Author: Jun Zheng
* License: UNLICENSED
*/
const Observer = require('./Observer');
class ModelObserver extends Observer {
/**
* Construct the ModelObserver
*/
constructor(){
super();
this._models = [];
}
/**
* Add a new model to currently observing list
* @param {Model} model
*/
addModel(model){
this._models.push(model);
}
/**
* Remove a model from currently observing list
* @param model
*/
removeModel(model){
let index = this._models.indexOf(model);
if(index > -1){
this._models.splice(index, 1);
}
}
}
module.exports = ModelObserver;