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Add switch node

This commit is contained in:
Nicholas O'Leary 2013-10-13 20:28:21 +01:00
parent fff61861c1
commit 32fcd12919
3 changed files with 266 additions and 0 deletions

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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.
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.
-->
<script type="text/x-red" data-template-name="switch">
<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>
<div class="form-row" style="padding-top:10px;">
If msg.<input type="text" id="node-input-property" style="width: 200px;"/>
</div>
<div class="form-row">
<div id="node-input-rule-container-div" style="border-radius: 5px; height: 310px; padding: 5px; border: 1px solid #ccc; overflow-y:scroll;">
<ol id="node-input-rule-container" style=" list-style-type:none; margin: 0;">
</ol>
</div>
<a href="#" class="btn btn-mini" id="node-input-add-rule" style="margin-top: 4px;"><i class="icon-plus"></i> Add</a>
</div>
</script>
<script type="text/x-red" data-help-name="switch">
<p>A simple function node to route messages based on its properties.</p>
<p>When a message arrives, the selected property is evaluated against each
of the defined rules. The message is then sent to the output of <i>all</i>
rules that pass.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('switch',{
color:"#E2D96E",
category: 'function',
defaults: {
name: {value:""},
property: {value: "payload",required:true},
rules:{value:[{t:"eq",v:""}]},
outputs:{value:1}
},
inputs:1,
outputs:1,
icon: "switch.png",
label: function() {
return this.name;
},
oneditprepare: function() {
var operators = [
{v:"eq",t:"=="},
{v:"neq",t:"!="},
{v:"lt",t:"<"},
{v:"lte",t:"<="},
{v:"gt",t:">"},
{v:"gte",t:">="},
{v:"btwn",t:"is between"},
{v:"cont",t:"contains"},
{v:"regex",t:"matches regex"},
{v:"true",t:"is true"},
{v:"false",t:"is false"},
{v:"null",t:"is null"},
{v:"nnull",t:"is not null"}
];
function generateRule(i,rule) {
var container = $('<li/>',{style:"margin:0; padding:8px 0px; border-bottom: 1px solid #ccc;"});
var row = $('<div/>').appendTo(container);
var row2 = $('<div/>',{style:"padding-top: 5px; text-align: right;"}).appendTo(container);
var selectField = $('<select/>',{style:"width:120px; margin-left: 5px; text-align: center;"}).appendTo(row);
for (var d in operators) {
selectField.append($("<option></option>").val(operators[d].v).text(operators[d].t));
}
var valueField = $('<input/>',{class:"node-input-rule-value",type:"text",style:"margin-left: 5px; width: 145px;"}).appendTo(row);
var btwnField = $('<span/>').appendTo(row);
var btwnValueField = $('<input/>',{class:"node-input-rule-btwn-value",type:"text",style:"margin-left: 5px; width: 50px;"}).appendTo(btwnField);
btwnField.append(" and ");
var btwnValue2Field = $('<input/>',{class:"node-input-rule-btwn-value2",type:"text",style:"width: 50px;margin-left:2px;"}).appendTo(btwnField);
var finalspan = $('<span/>',{style:"float: right; margin-top: 3px;margin-right: 10px;"}).appendTo(row);
finalspan.append(' send to <span class="node-input-rule-index">'+i+'</span> ');
selectField.change(function() {
var type = selectField.children("option:selected").val();
if (type.length < 4) {
selectField.css({"width":"60px"});
} else if (type === "regex") {
selectField.css({"width":"147px"});
} else {
selectField.css({"width":"120px"});
}
if (type === "btwn") {
valueField.hide();
btwnField.show();
} else {
btwnField.hide();
if (type === "true" || type === "false" || type === "null" || type === "nnull") {
valueField.hide();
} else {
valueField.show();
}
}
});
var deleteButton = $('<a/>',{href:"#",class:"btn btn-mini", style:"margin-left: 5px;"}).appendTo(finalspan);
$('<i/>',{class:"icon-remove"}).appendTo(deleteButton);
deleteButton.click(function() {
container.css({"background":"#fee"});
container.fadeOut(300, function() {
$(this).remove();
$("#node-input-rule-container").children().each(function(i) {
$(this).find(".node-input-rule-index").html(i+1);
});
});
});
$("#node-input-rule-container").append(container);
selectField.find("option").filter(function() {return $(this).val() == rule.t;}).attr('selected',true);
if (rule.t == "btwn") {
btwnValueField.val(rule.v);
btwnValue2Field.val(rule.v2);
} else if (rule.v) {
valueField.val(rule.v);
}
selectField.change();
}
$("#node-input-add-rule").click(function() {
generateRule($("#node-input-rule-container").children().length+1,{t:"",v:"",v2:""});
$("#node-input-rule-container-div").scrollTop($("#node-input-rule-container-div").get(0).scrollHeight);
});
for (var i=0;i<this.rules.length;i++) {
var rule = this.rules[i];
generateRule(i+1,rule);
}
function switchDialogResize(ev,ui) {
$("#node-input-rule-container-div").css("height",(ui.size.height-260)+"px");
};
$( "#dialog" ).on("dialogresize", switchDialogResize);
$( "#dialog" ).one("dialogopen", function(ev) {
var size = $( "#dialog" ).dialog('option','sizeCache-switch');
if (size) {
switchDialogResize(null,{size:size});
}
});
$( "#dialog" ).one("dialogclose", function(ev,ui) {
$( "#dialog" ).off("dialogresize",switchDialogResize);
});
},
oneditsave: function() {
var rules = $("#node-input-rule-container").children();
var ruleset;
var node = this;
node.rules= [];
rules.each(function(i) {
var rule = $(this);
var type = rule.find("select option:selected").val();
var r = {t:type};
if (!(type === "true" || type === "false" || type === "null" || type === "nnull")) {
if (type === "btwn") {
r.v = rule.find(".node-input-rule-btwn-value").val();
r.v2 = rule.find(".node-input-rule-btwn-value2").val();
} else {
r.v = rule.find(".node-input-rule-value").val();
}
}
node.rules.push(r);
});
node.outputs = node.rules.length;
}
});
</script>

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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.
* 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.
**/
var RED = require("../../red/red");
var operators = {
'eq':function(a,b) { return a == b; },
'neq':function(a,b) { return a != b; },
'lt':function(a,b) { return a < b; },
'lte':function(a,b) { return a <= b; },
'gt':function(a,b) { return a > b; },
'gte':function(a,b) { return a >= b; },
'btwn':function(a,b,c) { return a >= b && a <= c; },
'cont':function(a,b) { return (a+"").indexOf(b) != -1; },
'regex': function(a,b) { return (a+"").match(new RegExp(b)); },
'true': function(a) { return a === true; },
'false': function(a) { return a === false; },
'null': function(a) { return a === null; },
'nnull': function(a) { return a !== null; }
};
function SwitchNode(n) {
RED.nodes.createNode(this,n);
this.rules = n.rules;
this.property = n.property;
this.ruleFuncs = [];
for (var i=0;i<this.rules.length;i+=1) {
}
var node = this;
this.on('input',function(msg) {
var onward = [];
for (var i=0;i<node.rules.length;i+=1) {
var rule = node.rules[i];
console.log(rule);
if (operators[rule.t](msg[node.property],rule.v,rule.v2)) {
onward.push(msg);
} else {
onward.push(null);
}
}
this.send(onward);
});
}
RED.nodes.registerType("switch",SwitchNode);

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