// widget_back.ysl2

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

    |     on_click: function(evt) {
    |         console.log("Back !");
    |         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)");
    |     },
}