uibuilder dynamic SVG example - no framework needed
UPDATE May 2023: There was a slight bug in the index.js file. It was using an internal function that is no longer visible to end-user code. Sorry about that. I've fixed the code so it works again.
I thought it was high-time I produced a better and updated version of an old favourite - uibuilder, VueJS and SVG: Quick floorplan IoT example (flow) - Node-RED (nodered.org).
That example requires VueJS to work which seems overkill for a simple requirement. So this version does not use any frameworks, just plain old HTML, SVG, CSS and a bit of JavaScript thrown in.
The bulb images are cloned from a template and are clickable. Clicking them toggles them on and off as expected. And of course, you can control them from Node-RED as well.
The following is from the readme:
This example demonstrates how to use uibuilder with SVG images to create a dynamic home lighting dashboard.
Use a background-image (see index.css) and then clone the included "bulb" SVG (see index.html <template>) and change the properties of each bulb using uibuilder's reduced-code functions. Colours, size, position, etc are all controlled by CSS classes.
To use the example
As always deploy your flow after adding a uibuilder node, making sure the url setting is unique.
Then update the index.html, index.js and index.css files with the code provided.
Open the resulting page and play with controlling from Node-RED and try clicking on the bulb symbols on the page to see how all the interactions work.
This example demonstrates a hybrid way of working with uibuilder to create web pages.
There is some code and some Node-RED flow.
Hopefully, this illustrates how a little code can go a long way and that you are not constrained to use just one approach but can mix and match as desired.
[{"id":"1678f3c7ab967e39","type":"group","z":"278e7d113ed09433","style":{"stroke":"#999999","stroke-opacity":"1","fill":"none","fill-opacity":"1","label":true,"label-position":"nw","color":"#a4a4a4"},"nodes":["18b02b8e78a54427","68208d9442bc03c1","5f6a472f6435e598","389e05735379ed2e","db89d982a40f6c4d","3feb6c0d7c1c07b2","8ce7dd9a5d97b83b","06fa35d1c6063d4c","891a5f86c7c89917","3939b0bbde991557","2e40ef6c2172741a"],"x":128,"y":95,"w":1018,"h":532},{"id":"18b02b8e78a54427","type":"uibuilder","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"","topic":"","url":"uib-dynamic-svg-eg","fwdInMessages":false,"allowScripts":false,"allowStyles":false,"copyIndex":true,"templateFolder":"blank","extTemplate":"","showfolder":false,"reload":true,"sourceFolder":"src","deployedVersion":"6.4.1","showMsgUib":true,"x":620,"y":240,"wires":[["95af327f377fa565"],["5f6a472f6435e598"]]},{"id":"68208d9442bc03c1","type":"debug","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"Std output","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"true","targetType":"full","statusVal":"","statusType":"counter","x":1005,"y":300,"wires":[],"l":false},{"id":"5f6a472f6435e598","type":"debug","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"Ctrl output","active":false,"tosidebar":true,"console":false,"tostatus":true,"complete":"true","targetType":"full","statusVal":"","statusType":"counter","x":785,"y":300,"wires":[],"l":false},{"id":"389e05735379ed2e","type":"comment","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"uibuilder Dynamic SVG - Vanilla HTML, no framework needed. \\n Updated version of old example that used VueJS \\n Read this comment for details. Requires uibuilder v6.1 or above","info":"This example demonstrates how to use uibuilder\nwith SVG images to create a dynamic home\nlighting dashboard.\n\nUse a background-image (see index.css) and\nthen clone the included \"bulb\" SVG \n(see index.html `<template>`) and change the\nproperties of each bulb using uibuilder's \nreduced-code functions. Colours, size, position,\netc are all controlled by CSS classes.\n\n## To use the example\n\nAs always deploy your flow after adding a\nuibuilder node, making sure the url setting \nis unique.\n\nThen update the `index.html`, `index.js` and \n`index.css` files with the code provided.\n\nOpen the resulting page and play with\ncontrolling from Node-RED and try clicking\non the bulb symbols on the page to see \nhow all the interactions work.\n\nThis example demonstrates a hybrid way of \nworking with uibuilder to create web pages.\n\nThere is some code and some Node-RED flow.\n\nHopefully, this illustrates how a little code \ncan go a long way and that you are not \nconstrained to use just one approach but can \nmix and match as desired.","x":430,"y":160,"wires":[]},{"id":"db89d982a40f6c4d","type":"inject","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"Toggle Visible Msgs","props":[{"p":"_uib","v":"{\"command\":\"showMsg\"}","vt":"json"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","x":290,"y":300,"wires":[["06fa35d1c6063d4c"]]},{"id":"3feb6c0d7c1c07b2","type":"debug","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"Std output","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"true","targetType":"full","statusVal":"","statusType":"counter","x":1085,"y":180,"wires":[],"l":false},{"id":"8ce7dd9a5d97b83b","type":"link in","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"link in 10","links":["a4fb2160fb46d36c","06fa35d1c6063d4c"],"x":485,"y":240,"wires":[["18b02b8e78a54427"]]},{"id":"06fa35d1c6063d4c","type":"link out","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"link out 35","mode":"link","links":["8ce7dd9a5d97b83b"],"x":565,"y":360,"wires":[]},{"id":"891a5f86c7c89917","type":"group","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"Control lights from Node-RED","style":{"fill":"#ffbfbf","fill-opacity":"0.23","label":true,"color":"#000000"},"nodes":["ad6de73ba713120d","b2b85b92b1cf7da5","77193b09f79ec310","4c9d8f9adc268c35","f86567acf2326bad","36595c40107736a2"],"x":154,"y":339,"w":302,"h":242},{"id":"ad6de73ba713120d","type":"inject","z":"278e7d113ed09433","g":"891a5f86c7c89917","name":"LIGHTS (random)","props":[{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"LIGHTS","x":290,"y":380,"wires":[["b2b85b92b1cf7da5"]]},{"id":"b2b85b92b1cf7da5","type":"change","z":"278e7d113ed09433","g":"891a5f86c7c89917","name":"Randomly turn on/off all bulbs","rules":[{"t":"set","p":"_ui","pt":"msg","to":"(\t /* Generate a true/false for each bulb */\t $b1 := $random() >= 0.5;\t $b2 := $random() >= 0.5;\t $b3 := $random() >= 0.5;\t $b4 := $random() >= 0.5;\t /* Apply to msg._ui to randomly update all bulbs */\t [\t {\t \"method\":\"update\",\t \"components\": [\t {\t \"id\":\"bulb1\",\t \"attributes\": {\t /* NB: Give this one a different colour to the others */\t \"class\":\"bulb posn1 \" & ($b1 ? \"bulb-fail\" : \"\"),\t /* We use a data attribute to make it easier to track on/off state */\t \"data-state\": ($b1 ? \"on\" : \"off\")\t }\t }\t ]\t },\t {\t \"method\":\"update\",\t \"components\": [\t {\t \"id\":\"bulb2\",\t \"attributes\": {\t \"class\":\"bulb posn2 \" & ($b2 ? \"bulb-warn\" : \"\"),\t \"data-state\": ($b2 ? \"on\" : \"off\")\t }\t }\t ]\t },\t {\t \"method\":\"update\",\t \"components\": [\t {\t \"id\":\"bulb3\",\t \"attributes\": {\t \"class\":\"bulb posn3 \" & ($b3 ? \"bulb-warn\" : \"\"),\t \"data-state\": ($b3 ? \"on\" : \"off\")\t }\t }\t ]\t },\t {\t \"method\":\"update\",\t \"components\": [\t {\t \"id\":\"bulb4\",\t \"attributes\": {\t \"class\":\"bulb posn4 \" & ($b4 ? \"bulb-warn\" : \"\"),\t \"data-state\": ($b4 ? \"on\" : \"off\")\t }\t }\t ]\t }\t ]\t)","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":415,"y":380,"wires":[["06fa35d1c6063d4c"]],"l":false},{"id":"77193b09f79ec310","type":"inject","z":"278e7d113ed09433","g":"891a5f86c7c89917","name":"LIGHT 1 on","props":[{"p":"_ui","v":"[{\"method\":\"update\",\"components\":[{\"id\":\"bulb1\",\"attributes\":{\"class\":\"bulb posn1 bulb-fail\",\"data-state\":\"on\"}}]}]","vt":"json"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"LIGHT-1","x":310,"y":420,"wires":[["06fa35d1c6063d4c"]]},{"id":"4c9d8f9adc268c35","type":"inject","z":"278e7d113ed09433","g":"891a5f86c7c89917","name":"LIGHT 1 off","props":[{"p":"_ui","v":"[{\"method\":\"update\",\"components\":[{\"id\":\"bulb1\",\"attributes\":{\"class\":\"bulb posn1\",\"data-state\":\"off\"}}]}]","vt":"json"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"LIGHT-1","x":310,"y":460,"wires":[["06fa35d1c6063d4c"]]},{"id":"f86567acf2326bad","type":"inject","z":"278e7d113ed09433","g":"891a5f86c7c89917","name":"LIGHT 2 on","props":[{"p":"_ui","v":"[{\"method\":\"update\",\"components\":[{\"id\":\"bulb2\",\"attributes\":{\"class\":\"bulb posn2 bulb-warn\",\"data-state\":\"on\"}}]}]","vt":"json"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"LIGHT-2","x":310,"y":500,"wires":[["06fa35d1c6063d4c"]]},{"id":"36595c40107736a2","type":"inject","z":"278e7d113ed09433","g":"891a5f86c7c89917","name":"LIGHT 2 off","props":[{"p":"_ui","v":"[{\"method\":\"update\",\"components\":[{\"id\":\"bulb2\",\"attributes\":{\"class\":\"bulb posn2\",\"data-state\":\"off\"}}]}]","vt":"json"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"LIGHT-2","x":310,"y":540,"wires":[["06fa35d1c6063d4c"]]},{"id":"3939b0bbde991557","type":"group","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"User clicks turn on/off","style":{"fill":"#e3f3d3","fill-opacity":"0.26","label":true,"color":"#000000"},"nodes":["95af327f377fa565","c3bec95c24885417","a4fb2160fb46d36c"],"x":794,"y":159,"w":252,"h":109.5},{"id":"95af327f377fa565","type":"switch","z":"278e7d113ed09433","g":"3939b0bbde991557","name":"Switch out bulb clicks","property":"payload.state","propertyType":"msg","rules":[{"t":"eq","v":"on","vt":"str"},{"t":"eq","v":"off","vt":"str"},{"t":"else"}],"checkall":"false","repair":false,"outputs":3,"x":835,"y":220,"wires":[["c3bec95c24885417"],["c3bec95c24885417"],["68208d9442bc03c1"]],"outputLabels":["A bulb is currently ON","A bulb is currently OFF","Anything else"],"l":false},{"id":"c3bec95c24885417","type":"change","z":"278e7d113ed09433","g":"3939b0bbde991557","name":"Toggle clicked bulb state","rules":[{"t":"set","p":"_ui","pt":"msg","to":"(\t [\t {\t \"method\":\"update\",\t \"components\":[\t {\t \"id\": _ui.id,\t \"attributes\":{\t /* Toggle fill colour */\t \"class\":\"bulb \" & payload.posn & \" \" & (payload.state = \"off\" ? \"bulb-warn\" : \"\"),\t /* Toggle state */\t \"data-state\": (payload.state = \"on\" ? \"off\" : \"on\")\t }\t }\t ]\t }\t]\t)","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":905,"y":200,"wires":[["3feb6c0d7c1c07b2","a4fb2160fb46d36c"]],"l":false},{"id":"a4fb2160fb46d36c","type":"link out","z":"278e7d113ed09433","g":"3939b0bbde991557","name":"link out 34","mode":"link","links":["8ce7dd9a5d97b83b"],"x":1005,"y":220,"wires":[]},{"id":"2e40ef6c2172741a","type":"group","z":"278e7d113ed09433","g":"1678f3c7ab967e39","name":"Copy these to the \\n appropriate files \\n ","style":{"fill":"#ffffbf","fill-opacity":"0.15","label":true,"color":"#000000","label-position":"n"},"nodes":["fbe4c7573f698409","4ca9ba62878dbad8","83f5b29fe8ebb1d7","5dce296a96d3f95e"],"x":654,"y":367,"w":212,"h":234},{"id":"fbe4c7573f698409","type":"comment","z":"278e7d113ed09433","g":"2e40ef6c2172741a","name":"index.html","info":"<!doctype html>\n<html lang=\"en\"><head>\n\n <meta charset=\"utf-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n <link rel=\"icon\" href=\"../uibuilder/images/node-blue.ico\">\n\n <title>Dynamic SVG Example - Node-RED uibuilder</title>\n <meta name=\"description\" content=\"Node-RED uibuilder - Dynamic SVG Example\">\n\n <!-- Your own CSS (defaults to loading uibuilders css)-->\n <link type=\"text/css\" rel=\"stylesheet\" href=\"./index.css\" media=\"all\">\n\n <!-- #region Supporting Scripts. These MUST be in the right order. Note no leading / -->\n <script defer src=\"../uibuilder/uibuilder.iife.min.js\"></script>\n <script defer src=\"./index.js\">/* custom code */</script>\n <!-- #endregion -->\n\n</head><body class=\"uib\">\n <template id=\"bulb-template\">\n <svg id=\"mybulb\" class=\"bulb\" height=\"3rem\" viewBox=\"0 0 1024 1024\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n <defs>\n <filter id=\"shadow\">\n <feDropShadow dx=\"1\" dy=\"1\" stdDeviation=\"5\" flood-opacity=\"50%\" />\n </filter>\n <filter id=\"glow\" filterUnits=\"userSpaceOnUse\"\n x=\"-50%\" y=\"-50%\" width=\"200%\" height=\"200%\">\n <!-- blur the text at different levels-->\n <feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"5\" result=\"blur5\"/>\n <feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"10\" result=\"blur10\"/>\n <feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"20\" result=\"blur20\"/>\n <feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"30\" result=\"blur30\"/>\n <feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"50\" result=\"blur50\"/>\n <!-- merge all the blurs except for the first one -->\n <feMerge result=\"blur-merged\">\n <feMergeNode in=\"blur10\"/>\n <feMergeNode in=\"blur20\"/>\n <feMergeNode in=\"blur30\"/>\n <feMergeNode in=\"blur50\"/>\n </feMerge>\n <!-- recolour the merged blurs red-->\n <feColorMatrix result=\"red-blur\" in=\"blur-merged\" type=\"matrix\"\n values=\"1 0 0 0 0\n 0 0.06 0 0 0\n 0 0 0.44 0 0\n 0 0 0 1 0\" />\n <feMerge>\n <!--<feMergeNode in=\"red-blur\"/> largest blurs coloured red -->\n <feMergeNode in=\"blur-merged\"/>\n <feMergeNode in=\"blur5\"/> <!-- smallest blur left white -->\n <feMergeNode in=\"SourceGraphic\"/> <!-- original -->\n </feMerge>\n </filter>\n </defs>\n <title>TITLE</title>\n <path name=\"icon\" d=\"M511.549861 803.293331H408.419043a73.232959 73.232959 0 0 1-67.1862-41.991375 59.795719 59.795719 0 0 1-6.71862-30.569722 207.60536 207.60536 0 0 0-33.593101-113.88061 196.519637 196.519637 0 0 0-27.882273-33.5931A463.248853 463.248853 0 0 1 217.274302 504.314738a399.086031 399.086031 0 0 1-36.95241-75.248544 242.542184 242.542184 0 0 1-15.116895-77.264131 349.032312 349.032312 0 0 1 8.062344-84.990544 314.76735 314.76735 0 0 1 51.733375-114.888403A367.172586 367.172586 0 0 1 361.724634 34.011334 327.532728 327.532728 0 0 1 433.949799 8.144647 369.524103 369.524103 0 0 1 528.682342 0.418234a333.579486 333.579486 0 0 1 126.310057 29.225997 326.860866 326.860866 0 0 1 70.881442 44.678824A382.625412 382.625412 0 0 1 808.848799 168.383736a314.095488 314.095488 0 0 1 41.991375 105.146403 312.751764 312.751764 0 0 1 6.382689 92.045095 275.799353 275.799353 0 0 1-20.15586 76.256338 449.139751 449.139751 0 0 1-61.139443 107.16199 497.513815 497.513815 0 0 1-33.5931 39.639858 160.575019 160.575019 0 0 0-31.241583 48.038134 215.331773 215.331773 0 0 0-18.812136 55.428615c-1.679655 11.757585 0 23.179239-2.687448 33.5931a171.660742 171.660742 0 0 1-3.695241 25.194826 69.873649 69.873649 0 0 1-33.593101 40.647651 74.576683 74.576683 0 0 1-39.639858 10.07793zM490.050277 88.768088c-11.085723 0-22.171446 2.351517-33.5931 4.031172a210.96467 210.96467 0 0 0-74.240752 26.538549 244.221839 244.221839 0 0 0-55.428616 44.342893 222.386324 222.386324 0 0 0-43.335099 63.82689 230.784599 230.784599 0 0 0-19.483998 94.732543 28.218204 28.218204 0 0 0 33.5931 28.890066 28.890066 28.890066 0 0 0 22.171446-26.202618v-13.773171a167.965501 167.965501 0 0 1 9.406068-49.045927 184.762052 184.762052 0 0 1 64.834684-83.98275 167.965501 167.965501 0 0 1 93.72475-33.593101 142.770676 142.770676 0 0 0 18.140274 0 23.851101 23.851101 0 0 0 19.148067-15.452826 33.5931 33.5931 0 0 0 0-19.483998 23.51517 23.51517 0 0 0-20.491791-18.140274 122.950747 122.950747 0 0 0-15.116895 0zM647.601917 943.040628a15.788757 15.788757 0 0 1-13.773171 15.116895H400.356699a17.468412 17.468412 0 0 1-16.460619-8.734206 18.812136 18.812136 0 0 1 0-20.15586 16.124688 16.124688 0 0 1 16.460619-4.703034h227.089358a19.148067 19.148067 0 0 1 19.148067 20.827722zM405.731595 899.369598a18.140274 18.140274 0 0 1-16.460619-12.765378 17.804343 17.804343 0 0 1 15.452826-23.851101H635.508401a18.812136 18.812136 0 0 1 17.804343 13.773171 19.819929 19.819929 0 0 1-10.749792 21.499584 24.187032 24.187032 0 0 1-8.734206 0H423.535938zM437.64504 1022.992207a17.132481 17.132481 0 0 1-15.452826-9.406068 18.140274 18.140274 0 0 1 15.116895-26.202618h139.411367a19.819929 19.819929 0 0 1 19.483998 17.804343 16.124688 16.124688 0 0 1-8.734206 15.788757 19.148067 19.148067 0 0 1-9.741999 3.023379H442.348074z\" />\n <!-- <circle name=\"default\" cx=\"50\" cy=\"50\" r=\"50\"></circle> -->\n </svg>\n </template>\n \n <h1 class=\"with-subtitle\">Dynamic SVG Example</h1>\n <div role=\"doc-subtitle\">Using the uibuilder IIFE library.</div>\n <p>\n This is a uibuilder example looking at how easy it is to create a dynamic view of IoT devices in a building\n using SVG images both for the background (floor-plan) and device indicators.\n </p>\n\n <div id=\"more\"><!-- '#more' is used as a parent for dynamic HTML content in examples --></div>\n\n <h2>My House, Ground Floor</h2>\n <div id=\"floorplan\" class=\"plan\"><!-- Bulb icons dynamically inserted here --></div>\n\n</body></html>\n","x":740,"y":440,"wires":[]},{"id":"4ca9ba62878dbad8","type":"comment","z":"278e7d113ed09433","g":"2e40ef6c2172741a","name":"index.css","info":"/* Load defaults from `<userDir>/node_modules/node-red-contrib-uibuilder/front-end/uib-brand.css`\n * This version auto-adjusts for light/dark browser settings but might not be as complete.\n */\n@import url(\"../uibuilder/uib-brand.css\");\n\n/* These variables build on existing variables in uib-brand.css\n * They will be incorporated into that file in uibuilder v6.2\n */\n:root {\n --warning-intense: hsl(\n var(--warning-hue) 100% 50%\n );\n --failure-intense: hsl(\n var(--failure-hue) 100% 50%\n );\n --surface5: hsl( /* additional background shade */\n var(--brand-hue)\n calc(100% * var(--surfaces-saturation))\n calc(\n 100% * (var(--surfaces-lightness)\n - (var(--surfaces-factor) * .20)\n + (var(--surfaces-factor) * var(--surfaces-bias)))\n )\n );\n}\n\n\n/* Bulb classes control look, colour and position */\n\n.bulb { /* Default \"off\" class plus standard style */\n z-index: 9999 !important; /* Bulbs HAVE to be in the top z-layer */\n cursor: pointer; \n position: absolute; /* allows exact positioning within the parent div */\n transition: filter 2s ease-in-out 0s;\n background-color: rgba(0, 0, 0, 0.001); /* transparent background */\n filter: url(\"#shadow\"); /* selects the shadow filter */\n}\n.bulb path {\n fill: grey;\n}\n\n.bulb-warn { /* Standard \"on\" class */\n filter: url('#glow'); /* selects the glow filter instead of shadow */\n}\n.bulb-warn path {\n fill: var(--warning-intense);\n}\n\n.bulb-fail { /* Alternative \"on\" class with different colour */\n filter: url('#glow');\n}\n.bulb-fail path {\n fill: var(--failure-intense);\n}\n\n/* Bulb position classes, change as needed\n * Positions are relative to the parent floorplan div\n */\n.posn1 {\n top: 100px; left: 100px; \n}\n.posn2 {\n top: 120px; left: 270px; \n}\n.posn3 {\n top: 120px; left: 650px; \n}\n.posn4 {\n top: 270px; left: 250px; \n}\n\n/* floorplan div class change anything\n * except the position:relative.\n * The background image location is relative\n * to your uibuilder front-end files.\n */\n.plan {\n position:relative; \n width:99%; height:30rem; \n background:url(\"./background.svg\");\n background-color: var(--surface5);\n}\n","x":740,"y":480,"wires":[]},{"id":"83f5b29fe8ebb1d7","type":"comment","z":"278e7d113ed09433","g":"2e40ef6c2172741a","name":"index.js","info":"// @ts-nocheck\n/** Dynamic SVG example */\n\n// uibuilder.logLevel = 1\n\n/** A clone of the uibuilder $ function so you don't have to install v6.2-dev\n * Simplistic jQuery-like document CSS query selector, returns an HTML Element\n * If the selected element is a <template>, returns the first child element.\n * type {HTMLElement}\n * @param {string} cssSelector A CSS Selector that identifies the element to return\n * @returns {HTMLElement|HTMLTemplateElement|null}\n */\nfunction mySelector(cssSelector) {\n let el = document.querySelector(cssSelector)\n\n if (!el) {\n log(1, 'mySelector', `No element found for CSS selector ${cssSelector}`)()\n return null\n }\n\n if (el.nodeName === 'TEMPLATE') {\n el = el.content.firstElementChild\n if (!el) {\n log(0, 'mySelector', `Template selected for CSS selector ${cssSelector} but it is empty`)()\n return null\n }\n }\n\n return el\n}\n\nfunction doMe(event) {\n uibuilder.eventSend(event)\n}\n\n/** Insert a clone of a template tag\n * NB: Template should have only a single direct child tag, nothing other than that tag and its contents will be cloned.\n * @param {HTMLTemplateElement} template The template to clone and insert\n * @param {HTMLElement} parent The parent within which to insert the clone\n * @param {object} [ui] Optional uib UI object that will apply changes to the cloned element (e.g. attribs, slot)\n */\nfunction htmlClone(template, parent, ui) {\n console.log(ui)\n if (!template || !(template instanceof Element)) {\n console.error('Template HTMLElement not provided or is not an HTML Element')\n return\n }\n if (!parent || !(parent instanceof Element)) {\n console.error('Parent HTMLElement not provided or is not an HTML Element')\n return\n }\n if (!ui) ui = {}\n if (!ui.position) ui.position = 'last'\n\n const clone = template.cloneNode(true)\n\n // Oops! Fns starting with `_` should not have been used - sorry. This fn no longer available directly.\n // Will add an equivalent in a future release (post v6.4.1) probably called `uiEnhanceElement`\n // uibuilder._uiComposeComponent(clone, ui)\n clone.id = ui.id\n clone.classList.add(ui.attributes['data-posn'])\n clone.dataset.state = ui.attributes['data-state']\n clone.dataset.posn = ui.attributes['data-posn']\n clone.onclick = doMe //uibuilder.eventSend\n\n if (ui.position === 'first') {\n // Insert new el before the first child of the parent. Ref: https://developer.mozilla.org/en-US/docs/Web/API/Node/insertBefore#example_3\n parent.insertBefore(clone, parent.firstChild)\n } else if (Number.isInteger(Number(ui.position))) {\n elParent.insertBefore(clone, parent.children[ui.position])\n } else {\n // Append to the required parent\n parent.appendChild(clone)\n }\n\n}\nconst x = {\n \"id\": \"bulb1\",\n \"attributes\": {\n \"class\": \"bulb posn1\",\n \"data-state\": \"off\",\n \"data-posn\": \"posn1\"\n },\n \"events\": {\n \"click\": \"uibuilder.eventSend\"\n },\n \"position\": \"last\"\n}\n\n// The Template tag in index.html contains a template \"bulb\" SVG image\n// Here, we clone that multiple times and set some properties.\n// Note that `htmlClone` is a function that will land in the uibuilder client in v6.2\n// Also, the $ function is improved in v6.2 so a copy of that is included here for convenience.\n//\n// We track state and position class on data-* attributes so that it is much easier to process\n// click events in Node-RED without having to create a custom click handler, we can just use the standard eventSend.\n// CSS classes do all the clever stuff 😁\n\nhtmlClone($('#bulb-template'), $('#floorplan'), {\n // As always, we set a unique ID for every created element so it can be updated easily later\n id: 'bulb1',\n // You only need this if you want to choose 'first' or a position number,\n // the clone will be added at the specified child position of the parent.\n // position: 'last', \n attributes: {\n // Apply base bulb class and a positioning class\n class: 'bulb posn1',\n // Track the on/off state separately - makes processing in Node-RED easier\n 'data-state': 'off',\n // Track the position class separately - makes processing in Node-RED easier\n 'data-posn': 'posn1'\n },\n // We have to add event handlers after a clone, they cannot be included in the template\n events: {\n click: 'uibuilder.eventSend'\n }\n})\n\nhtmlClone(mySelector('#bulb-template'), mySelector('#floorplan'), {\n id: 'bulb2',\n attributes: {\n class: 'bulb posn2',\n 'data-state': 'off',\n 'data-posn': 'posn2'\n },\n events: {\n click: 'uibuilder.eventSend'\n }\n})\n\nhtmlClone(mySelector('#bulb-template'), mySelector('#floorplan'), {\n id: 'bulb3',\n attributes: {\n class: 'bulb posn3',\n 'data-state': 'off',\n 'data-posn': 'posn3'\n },\n events: {\n click: 'uibuilder.eventSend'\n }\n})\n\nhtmlClone(mySelector('#bulb-template'), mySelector('#floorplan'), {\n id: 'bulb4',\n attributes: {\n class: 'bulb posn4',\n 'data-state': 'off',\n 'data-posn': 'posn4'\n },\n events: {\n click: 'uibuilder.eventSend'\n },\n})\n","x":730,"y":520,"wires":[]},{"id":"5dce296a96d3f95e","type":"comment","z":"278e7d113ed09433","g":"2e40ef6c2172741a","name":"background.svg","info":"Can't include this directly here otherwise\nthe flow cannot be posted to the forum.\n\nThe example background file can be obtained\nhere:\n\nhttps://gist.github.com/TotallyInformation/02eb3716157db586f3f5b8a85c241009#file-background-svg\n\nCopy the text out of it and paste into a new \nfile, `background1.svg` in the same location \nas your `index.html` file.\n","x":760,"y":560,"wires":[]}]
