examples/javascriptLaunch.html

   1 <!--
   2  * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
   3  * Copyright (C) $$Year-Rel$$ The Jalview Authors
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   5  * This file is part of Jalview.
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   7  * Jalview is free software: you can redistribute it and/or
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  17  * The Jalview Authors are detailed in the 'AUTHORS' file.
  18 -->
  19
  20 <div id="view_decorated" name="view_decorated"  style="margin:8px; padding:10px; border: 2px solid red; text-align:center; display:none;"><b>Click <a href="index.html#javascriptLaunch"> here</a> to view decorated page</b></div>
  21
  22 <!-- boiler plate link to alternate demopage -->
  23 <div style="width: 100%">
  24 <div style="width:35%; align:left; float:right;">
  25
  26 <div style="margin:8px; padding:10px; border: 2px solid black; align: left;">
  27 <p>Quick Links to jars for example:<br/><a href="jalviewApplet.jar">jalviewApplet.jar</a> and <a href="JmolApplet-14.2.14_2015.06.11.jar">JmolApplet.jar</a>
  28 </p></div>
  29 </div>
  30 </div>
  31
  32 <!-- content template start -->
  33   <SCRIPT type="text/javascript">
  34   /* <![CDATA[ // */
  35 // From http://snipplr.com/view.php?codeview&id=1272
  36 //----------------------------------------
  37 //Wrapper function for constructing a request object.
  38 //      Parameters:
  39 //              reqType: The HTTP request type, such as GET or POST.
  40 //              url: The URL of the server program.
  41 //              asynch: Whether to send the request asynchronously or not.
  42 //----------------------------------------
  43
  44 function httpRequest(reqType,url,asynch,respHandle) {
  45
  46         // Mozilla-based browsers
  47         if (window.XMLHttpRequest) {
  48                 request = new XMLHttpRequest();
  49         } else if (window.ActiveXObject) {
  50                 request = new ActiveXObject("Msxml2.XMLHTTP");
  51                 if (!request) {
  52                         request = new ActiveXObject("Microsoft.XMLHTTP");
  53                 }
  54         }
  55
  56         // Request could still be null if neither ActiveXObject
  57         //   initialization succeeded
  58         if (request) {
  59                 // If the reqType param is POST, then the fifth arg is the POSTed data
  60                 if (reqType.toLowerCase() != "post") {
  61                         initReq(reqType, url, asynch, respHandle);
  62                 } else {
  63                         // The POSTed data
  64                         var args = arguments[5];
  65                         if (args != null && args.length > 0) {
  66                                 initReq(reqType, url, asynch, respHandle, args);
  67                         }
  68                 }
  69         } else {
  70                 alert("Your browser does not permit the use of all " +
  71                         "of this application's features!");
  72         }
  73
  74 }
  75
  76 //----------------------------------------
  77 //Initialize a request object that is already constructed
  78 //----------------------------------------
  79
  80 function initReq(reqType, url, bool, respHandle) {
  81         try {
  82                 // Specify the function that will handle the HTTP response
  83                 request.onreadystatechange = respHandle;
  84                 request.open(reqType, url, bool);
  85                 // If the reqType param is POST, then the
  86                 //   fifth argument to the function is the POSTed data
  87                 if (reqType.toLowerCase() == "post") {
  88                         // Set the Content-Type header for a POST request
  89                         request.setRequestHeader("Content-Type", "application/x-ww-form-urlencoded; charset=UTF-8");
  90                         request.send(arguments[4]);
  91                 } else {
  92                         request.send(null);
  93                 }
  94         } catch (errv) {
  95                 alert("The application cannot contact the server at the moment. " +
  96                         "Please try again in a few seconds.\n" +
  97                         "Error detail: " + errv.message);
  98         }
  99 }
 100
 101 // jalview launching with fetched data
 102
 103 function startJalview(aligURL,title,alwvar) {
 104                 var aligment = "";
 105                 httpRequest("get",aligURL,true,function() {
 106                                 if (request.readyState == 4) {
 107                                         alignment = request.responseText;
 108                                         eval("var "+alwvar+" = document.JalviewLite.loadAlignment(alignment,title)");
 109                                 }
 110                 })
 111
 112 }
 113
 114 /* ]]> */
 115 </SCRIPT>
 116   <form name="Form1">
 117 <applet name="JalviewLite"  code="jalview.bin.JalviewLite"
 118 archive="jalviewApplet.jar,JmolApplet-14.2.14_2015.06.11.jar" width="0" height="0">
 119 <param name="debug" value="true"/>
 120 <param name="showbutton" value="false"/>
 121 </applet>
 122
 123 <h2>Javascript Launch Button</h2><p>The button below demonstrates how JalviewLite can be launched via a javascript action.</p>
 124
 125   <input type="button" name="Button1" value="Start"
 126 onClick="startJalview('plantfdx.fa','Button1.alignment','alwvar')"/>
 127   </form>
 128 <!-- content template end -->