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node-red/nodes/core/logic/16-range.js
Dave Conway-Jones a11a279c00
add msg. select to range and yaml nodes,
re-order son node (name to bottom)
add common.label.property to messages list
2018-01-16 10:59:44 +00:00

55 lines
2.2 KiB
JavaScript

/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
module.exports = function(RED) {
"use strict";
function RangeNode(n) {
RED.nodes.createNode(this, n);
this.action = n.action;
this.round = n.round || false;
this.minin = Number(n.minin);
this.maxin = Number(n.maxin);
this.minout = Number(n.minout);
this.maxout = Number(n.maxout);
this.property = n.property||"payload";
var node = this;
this.on('input', function (msg) {
var value = RED.util.getMessageProperty(msg,node.property);
if (value !== undefined) {
var n = Number(value);
if (!isNaN(n)) {
if (node.action == "clamp") {
if (n < node.minin) { n = node.minin; }
if (n > node.maxin) { n = node.maxin; }
}
if (node.action == "roll") {
var divisor = node.maxin - node.minin;
n = ((n - node.minin) % divisor + divisor) % divisor + node.minin;
}
value = ((n - node.minin) / (node.maxin - node.minin) * (node.maxout - node.minout)) + node.minout;
if (node.round) { value = Math.round(value); }
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else { node.log(RED._("range.errors.notnumber")+": "+value); }
}
else { node.send(msg); } // If no payload - just pass it on.
});
}
RED.nodes.registerType("range", RangeNode);
}