89 lines
2.2 KiB
JavaScript
89 lines
2.2 KiB
JavaScript
"use strict";
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import m from "mithril";
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import * as taskQueue from "../task-queue";
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import * as store from "../store";
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import * as expression from "../../common/expression";
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import memoize from "../../common/memoize";
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import timeAgo from "../timeago";
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const memoizedParse = memoize(expression.parse);
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const evaluateParam = memoize((exp, obj, now) => {
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let timestamp = now;
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const params = new Set();
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const value = expression.evaluate(memoizedParse(exp), obj, now, e => {
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if (Array.isArray(e)) {
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if (e[0] === "PARAM") {
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params.add(e[1]);
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if (!Array.isArray(e[1])) {
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const p = obj[e[1]];
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if (p && p.valueTimestamp)
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timestamp = Math.min(timestamp, p.valueTimestamp);
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}
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}
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if (e[0] === "FUNC" && e[1] === "DATE_STRING" && !Array.isArray(e[2]))
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return new Date(e[2]).toLocaleString();
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}
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return e;
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});
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let parameter = params.size === 1 ? params.values().next().value : null;
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if (Array.isArray(parameter)) parameter = null;
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return { value, timestamp, parameter };
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});
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const component = {
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view: vnode => {
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const device = vnode.attrs.device;
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const { value, timestamp, parameter } = evaluateParam(
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vnode.attrs.parameter,
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vnode.attrs.device,
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store.getTimestamp()
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);
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if (value == null) return null;
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let edit;
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if (device[parameter] && device[parameter].writable) {
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edit = m(
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"button",
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{
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title: "Edit parameter value",
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onclick: () => {
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taskQueue.stageSpv({
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name: "setParameterValues",
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device: device["DeviceID.ID"].value[0],
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parameterValues: [
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[
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parameter,
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device[parameter].value[0],
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device[parameter].value[1]
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]
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]
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});
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}
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},
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"✎"
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);
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}
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return m(
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"span.parameter-value",
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{
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onmouseover: e => {
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e.redraw = false;
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const now = Date.now();
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const localeString = new Date(timestamp).toLocaleString();
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e.target.title = `${localeString} (${timeAgo(now - timestamp)})`;
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}
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},
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value,
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edit
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);
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}
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};
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export default component;
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