public onNewItem(event){
     if(event.value){
         this.collection._items.unshift(event.value);
         for(let i in this.collection._items){
             this.collection._items[i].position = parseInt(i);
         }
         this.collection.itemsCount++;
         this.currentModal.close();
     }
 }

 public onCollectionUpdated(event){
     if(event.value){
         this.collection.title = event.value.title;
         this.collection.bio = event.value.bio;
         this.collection.color = event.value.color;
         this.collection.visibility = event.value.visibility;
         this.collection._thumbnail = event.value._thumbnail;
         this.emitUpdateHeaderEvent();
     }
     this.currentModal.close();
 }

 () => { this.modalRef.close(); }

 private onSaveSuccess(result: ProductOption) {
     this.modalRef.close();
     this.eventManager.broadcast({ name: 'optionValueListModification', content: 'OK'});
 }

 closeModal() {
   this.modal.close();
 }

 public onUpdateCollectionCanceled(){
     this.currentModal.close();
 }