index.html

  
 <!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
        <title>Mol* Plugin Wrapper</title>
        <style>
            * {
                margin: 0;
                padding: 0;
                box-sizing: border-box;
            }
            #app {
                position: absolute;
                left: 160px;
                top: 100px;
                width: 600px;
                height: 600px;
                border: 1px solid #ccc;
            }

            #controls {
                position: absolute;
                width: 130px;
                top: 10px;
                left: 10px;
            }

            #controls > button {
                display: block;
                width: 100%;
                text-align: left;
            }

            #controls > hr {
                margin: 5px 0;
            }

            #controls > input, #controls > select {
                width: 100%;
                display: block;
            }
        </style>
        <link rel="stylesheet" type="text/css" href="app.css" />
        <script type="text/javascript" src="./index.js"></script>
    </head>
    <body>
        <div id='controls'>
            <h3>Source</h3>
            <input type='text' id='url' placeholder='url' />
            <input type='text' id='assemblyId' placeholder='assembly id' />
            <select id='format'>
                <option value='cif' selected>CIF</option>
                <option value='pdb'>PDB</option>
            </select>
        </div>
        <div id="app"></div>
        <script>      
            function $(id) { return document.getElementById(id); }
        
            var pdbId = '1grm', assemblyId= '1';
            var url = 'https://www.ebi.ac.uk/pdbe/static/entry/' + pdbId + '_updated.cif';
            var format = 'cif';
            
            $('url').value = url;
            $('url').onchange = function (e) { url = e.target.value; }
            $('assemblyId').value = assemblyId;
            $('assemblyId').onchange = function (e) { assemblyId = e.target.value; }
            $('format').value = format;
            $('format').onchange = function (e) { format = e.target.value; }