Method refresh

packages/core/ui/repeater/index.ts:108–147

* Forces the Repeater to reload all its items.

()

	 * Forces the Repeater to reload all its items.
	 */
	public refresh() {
		if (this.itemsLayout) {
			this.itemsLayout.removeChildren();
		}

		if (!this.items) {
			return;
		}

		const length = this.items.length;
		for (let i = 0; i < length; i++) {
			const dataItem = this._getDataItem(i);
			let viewToAdd = null;

			if (this._itemTemplateSelector && this.itemTemplates) {
				const key = this._itemTemplateSelector(dataItem, i, this.items);
				const length2 = this.itemTemplates.length;
				for (let j = 0; j < length2; j++) {
					const template = <KeyedTemplate>this.itemTemplates[j];
					if (template.key === key) {
						viewToAdd = template.createView();
						break;
					}
				}
			}

			if (!viewToAdd) {
				if (__UI_USE_EXTERNAL_RENDERER__) {
					viewToAdd = isFunction(this.itemTemplate) ? (<Template>this.itemTemplate)() : this._getDefaultItemContent(i);
				} else {
					viewToAdd = this.itemTemplate ? Builder.parse(this.itemTemplate, this) : this._getDefaultItemContent(i);
				}
			}

			viewToAdd.bindingContext = dataItem;
			this.itemsLayout.addChild(viewToAdd);
		}

		this._isDirty = false;
	}

	public _onItemsChanged(data: ChangedData<any>) {
		// TODO: use the event args and optimize this code by remove/add single items instead of full rebuild.