iot-backend/software/flow/node_modules/node-red-dashboard/nodes/ui_button.js

85 lines
3 KiB
JavaScript
Raw Normal View History

2023-02-22 17:26:41 +01:00
module.exports = function(RED) {
var ui = require('../ui')(RED);
function ButtonNode(config) {
RED.nodes.createNode(this, config);
var node = this;
var group = RED.nodes.getNode(config.group);
if (!group) { return; }
var tab = RED.nodes.getNode(group.config.tab);
if (!tab) { return; }
var payloadType = config.payloadType;
var payload = config.payload;
if (payloadType === 'flow' || payloadType === 'global') {
try {
var parts = RED.util.normalisePropertyExpression(payload);
if (parts.length === 0) {
throw new Error();
}
}
catch(err) {
node.warn("Invalid payload property expression - defaulting to node id")
payload = node.id;
payloadType = 'str';
}
}
else {
payload = payload || node.id;
}
node.on("input", function(msg) {
node.topi = RED.util.evaluateNodeProperty(config.topic,config.topicType || "str",node,msg);
});
var done = ui.add({
node: node,
tab: tab,
group: group,
emitOnlyNewValues: false,
forwardInputMessages: config.passthru || false,
storeFrontEndInputAsState: false,
control: {
type: 'button',
label: config.label,
tooltip: config.tooltip,
color: config.color,
bgcolor: config.bgcolor,
className: config.className,
icon: config.icon,
order: config.order,
value: payload,
format: config.bgcolor,
width: config.width || group.config.width || 3,
height: config.height || 1
},
beforeSend: function (msg,m2) {
var t = RED.util.evaluateNodeProperty(config.topic,config.topicType || "str",node,msg)
if (typeof t === "undefined") { t = node.topi; }
if (t !== undefined) { msg.topic = t; }
if (((config.topicType || "str") === "str") && t == "") { delete msg.topic; }
if (m2 !== undefined) { msg.event = m2.event; }
},
convertBack: function (value) {
if (payloadType === "date") {
value = Date.now();
}
else {
try {
value = RED.util.evaluateNodeProperty(payload,payloadType,node);
}
catch(e) {
if (payloadType === "bin") { node.error("Badly formatted buffer"); }
else { node.error(e,payload); }
}
}
return value;
}
});
node.on("close", done);
}
RED.nodes.registerType("ui_button", ButtonNode);
};