node-red/nodes/core/89-delay.html

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  Copyright 2013 IBM Corp.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
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<script type="text/x-red" data-template-name="delay">
    <div class="form-row">
        <label for="node-input-pauseType"><i class="icon-tasks"></i> Action</label>
        <select id="node-input-pauseType" style="width:270px !important">
          <option value="delay">Delay message</option>
          <option value="rate">Limit message rate</option>
        </select>
    </div>
    <div id="delay-details" class="form-row">
        <label for="node-input-timeout"><i class="icon-time"></i> For</label>
        <input type="text" id="node-input-timeout" placeholder="Time" style="direction:rtl; width:50px !important">
        <select id="node-input-timeoutUnits" style="width:200px !important">
          <option value="milliseconds">Milliseconds</option>
          <option value="seconds">Seconds</option>
          <option value="minutes">Minutes</option>
          <option value="hours">Hours</option>
          <option value="days">Days</option>
        </select>
    </div>
    <div id="rate-details" class="form-row">
        <label for="node-input-rate"><i class="icon-time"></i> To</label>
        <input type="text" id="node-input-rate" placeholder="1" style="direction:rtl; width:40px !important">
        <label for="node-input-rateUnits" style="width:120px !important">message(s) per</label>
        <select id="node-input-rateUnits" style="width:140px !important">
          <option value="second">Second</option>
          <option value="minute">Minute</option>
          <option value="hour">Hour</option>
          <option value="day">Day</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
</script>


<script type="text/x-red" data-help-name="delay">
    <p>Introduces a delay into a flow or rate limits messages</p>
    <p>Default delay is 5 seconds or rate limit of 1 message/second, but both can be configured</p>
    <p>The rate limiter will delay messages by buffering in a time released queue. A warning is generated if the buffer is larger than 1000 items.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('delay',{
        category: 'function',
        color:"#E6E0F8",
        defaults: {
            name: {value:""},
            pauseType: {value:"delay", required:true},
            timeout: {value:"5", required:true, validate:RED.validators.number()},
            timeoutUnits: {value:"seconds"},
            rate: {value:"1", required:true, validate:RED.validators.number()},
            rateUnits: {value: "second"}
        },
        inputs:1,
        outputs:1,
        icon: "timer.png",
        label: function() {
            if (this.pauseType == "delay") {
              var units = this.timeoutUnits ? this.timeoutUnits.charAt(0) : "s";
              return this.name||"delay "+this.timeout+" " + units;
            } else if (this.pauseType == "rate") {
              var units = this.rateUnits ? this.rateUnits.charAt(0) : "s";
              return this.name||"limit "+this.rate+" msg/"+ units;
            }
            return "";
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        oneditprepare: function() {
          $( "#node-input-timeout" ).spinner({ min:1, max:60 });
          $( "#node-input-rate" ).spinner({ min:1});

          if (this.pauseType == "delay") {
            $("#delay-details").show();
            $("#rate-details").hide();
          } else if (this.pauseType == "rate") {
            $("#delay-details").hide();
            $("#rate-details").show();
          }

          if (!this.timeoutUnits) {
            $("#node-input-timeoutUnits option").filter(function() {
              return $(this).val() == 'seconds';
            }).attr('selected', true);
          }

          $("#node-input-pauseType").on("change",function() {
            if (this.value == "delay") {
              $("#delay-details").show();
              $("#rate-details").hide();
            } else if (this.value == "rate") {
              $("#delay-details").hide();
              $("#rate-details").show();
            }
          });
        }
    });
</script>