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node-red/nodes/core/core/89-trigger.js
2014-10-27 08:54:21 +00:00

92 lines
3.7 KiB
JavaScript

/**
* Copyright 2014 IBM Corp.
*
* 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";
var mustache = require("mustache");
function TriggerNode(n) {
RED.nodes.createNode(this,n);
this.op1 = n.op1 || "1";
this.op2 = n.op2 || "0";
this.op1type = n.op1type || "val";
this.op2type = n.op2type || "val";
this.extend = n.extend || false;
this.units = n.units || "ms";
this.duration = n.duration || 250;
if (this.duration <= 0) { this.duration = 0; }
else {
if (this.units == "s") { this.duration = this.duration * 1000; }
if (this.units == "min") { this.duration = this.duration * 1000 * 60; }
if (this.units == "hr") { this.duration = this.duration * 1000 *60 * 60; }
}
this.op1Templated = this.op1.indexOf("{{") != -1;
this.op2Templated = this.op2.indexOf("{{") != -1;
if (!isNaN(this.op1)) { this.op1 = Number(this.op1); }
if (!isNaN(this.op2)) { this.op2 = Number(this.op2); }
if (this.op1 == "true") { this.op1 = true; }
if (this.op2 == "true") { this.op2 = true; }
if (this.op1 == "false") { this.op1 = false; }
if (this.op2 == "false") { this.op2 = false; }
if (this.op1 == "null") { this.op1 = null; }
if (this.op2 == "null") { this.op2 = null; }
try { this.op1 = JSON.parse(this.op1); }
catch(e) { this.op1 = this.op1; }
try { this.op2 = JSON.parse(this.op2); }
catch(e) { this.op2 = this.op2; }
var node = this;
var tout = null;
var m2;
this.on("input", function(msg) {
if (msg.hasOwnProperty("reset")) {
clearTimeout(tout);
tout = null;
}
else {
if (!tout) {
if (node.op2type === "pay") { m2 = msg.payload; }
else if (node.op2Templated) { m2 = mustache.render(node.op2,msg); }
else { m2 = node.op2; }
if (node.op1type === "pay") { }
else if (node.op1Templated) { msg.payload = mustache.render(node.op1,msg); }
else { msg.payload = node.op1; }
if (node.op1type !== "nul") { node.send(msg); }
if (node.duration === 0) { tout = "infinite"; }
else {
tout = setTimeout(function() {
msg.payload = m2;
if (node.op2type !== "nul") { node.send(msg); }
tout = null;
},node.duration);
}
}
else if ((node.extend == "true") && (node.duration > 0)) {
clearTimeout(tout);
tout = setTimeout(function() {
msg.payload = m2;
if (node.op2type !== "nul") { node.send(msg); }
tout = null;
},node.duration);
}
}
});
this.on("close", function() {
if (tout) { clearTimeout(tout); }
});
}
RED.nodes.registerType("trigger",TriggerNode);
}