// widget_back.ysl2

template "widget[@type='Back']", mode="widget_defs" {

param "hmi_element";

| on_click: function(evt) {

| if(jump_history.length > 1){

| jump_history.pop();

| let [page_name, index] = jump_history.pop();

| switch_page(page_name, index);

| }

| },

| init: function() {

| this.element.setAttribute("onclick", "hmi_widgets['«$hmi_element/@id»'].on_click(evt)");

| },

}