scadalts-sample.js

/*
 * Example of what I think a Scada-LTS script would be written like.
 * 1 - Using DOM instead of strings
 * 2 - Using a native API to fetch info from backend
 */

var pontos = {};
for(let i = 1; i <= 15; i++) {
        pontos[i] = scada.getDatapointById(`user${i}`);
}

let select = document.createElement("select");
let on_change = `mango.view.setPoint(${point.id}, ${pointComponent.id}, ${this.options[this.selectedIndex].value})`;
select.setAttribute("onChange", on_change);

function make_option (id) {
        let default = "selecione o usuário";
        let last_value = id > 0 ? pontos[id].ultimoValor() : null;
        let text_str = id > 0 ? `Usuário ${id} - ${last_value}` : default;
        let option = document.createElement("option");
        option.setAttribute("value", id);
        if (id == value) {
                option.setAttribute("selected", "selected");
        }
        let text = document.createTextNode(text_str);
        option.appendChild(text);
        return option;
}

for(let i = 0; i <= 15; i++) {
        let option = make_option(i);
        select.appendChild(option);
}

return select;