A Google Gadget for Bioinformatics.

As Pedro said on his blog: Google announced that their widgets (or gadgets) can now be used on third party webpages.. I've written ([here])a google gadget searching for pubmed or genbank using the NCBI EUtilies. Enjoy !

Pierre

Updated 2010-08-12: source code

<?xml version="1.0" encoding="UTF-8"?>
<Module>
<ModulePrefs
title="Search NCBI/__UP_db__"
directory_title="Search NCBI/__UP_db__"
description="Search Pubmed/Genbank at the National Center for Biotechnology Information (NCBI)"
author="Pierre Lindenbaum PhD"
author_email="plindenbaum+gadget4ncbi@yahoo.fr"
title_url="http://www.urbigene.com/googlegadget/index.html#gadget4ncbi"
author_affiliation="Integragen"
author_location="Evry,France"
height="200"
width="320"
scrolling="true"
singleton="true"
screenshot="http://www.urbigene.com/googlegadget/ncbi_screenshot.png"
thumbnail="http://www.urbigene.com/googlegadget/ncbi_thumbnail.png"
author_photo="http://www.urbigene.com/googlegadget/plindenbaum.png"
author_link="http://plindenbaum.blogspot.com"
author_aboutme="Bioinformatician at Integragen"
author_quote="A child of five would understand this. Send someone to fetch a child of five. "
>
<Locale lang="en"/>
<Locale lang="ja"/>
<Locale lang="fr"/>
<Locale lang="de"/>
<Locale lang="zn-cn"/>
<Locale lang="zh-tw"/>
</ModulePrefs>
<UserPref name="term"
display_name="Your Query"
datatype="string"
required="true"
default_value="Rotavirus"
/>
<UserPref name="db"
display_name="Database"
datatype="enum"
required="true"
default_value="pubmed">
<EnumValue value="pubmed" display_value="Pubmed"/>
<EnumValue value="nucleotide" display_value="Nucleotide"/>
<EnumValue value="protein" display_value="Protein"/>
</UserPref>
<UserPref name="retmax"
display_name="Number of items retrieved"
datatype="enum"
required="true"
default_value="10">
<EnumValue value="1" display_value="1"/>
<EnumValue value="2" display_value="2"/>
<EnumValue value="10" display_value="10"/>
<EnumValue value="15" display_value="15"/>
<EnumValue value="20" display_value="20"/>
<EnumValue value="25" display_value="25"/>
<EnumValue value="50" display_value="50"/>
<EnumValue value="100" display_value="100"/>
</UserPref>
<Content type="html"><![CDATA[
<style>
#content__MODULE_ID__ {
font-size: 9pt;
margin: 5px;
background-color: #FFFFBF;
}
dt {
font-size: 9pt;
}
dd {
font-size: 7pt;
}

</style>
<div id="content__MODULE_ID__"></div>
<script type="text/javascript">

var prefs__MODULE_ID__ = new _IG_Prefs(__MODULE_ID__);

function dom1__MODULE_ID__(node,tag)
{
if(node==null || tag==null) return null;
var n=node.firstChild;
while(n!=null)
{
if(n.nodeName==tag) return n;
n=n.nextSibling;
}
return null;
}

function dom2__MODULE_ID__(node)
{
if(node==null) return "undefined";
var c= node.firstChild;
if(c==null) return "undefined";
return c.nodeValue;
}

function pubmed__MODULE_ID__(response)
{
var nodes = response.getElementsByTagName("PubmedArticle");
var html="<div><dl>";
for (var i = 0; i < nodes.length ; i++)
{
var MedlineCitation= dom1__MODULE_ID__(nodes.item(i),"MedlineCitation");
var PMID= dom1__MODULE_ID__(MedlineCitation,"PMID");
var Article = dom1__MODULE_ID__(MedlineCitation,"Article");
var ArticleTitle = dom1__MODULE_ID__(Article,"ArticleTitle");
var Title = dom1__MODULE_ID__(dom1__MODULE_ID__(MedlineCitation,"MedlineJournalInfo"),"MedlineTA");
var AuthorList = dom1__MODULE_ID__(Article,"AuthorList");
var Author = dom1__MODULE_ID__(AuthorList,"Author");
var LastName = dom1__MODULE_ID__(Author,"LastName");

html+='<dt><a title=\"show this Article\" href=\"http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&amp;cmd=Retrieve&amp;dopt=AbstractPlus&amp;list_uids='+dom2__MODULE_ID__(PMID)+
'\" target=\"pubmed'+dom2__MODULE_ID__(PMID)+
'\">'+dom2__MODULE_ID__(ArticleTitle)+'</a></dt>';
html+='<dd><i>'+dom2__MODULE_ID__(Title)+'</i>. <u>'+dom2__MODULE_ID__(LastName)+'</u> &amp; al.</dd>';
}

html+="</dl></div>";
_gel("content__MODULE_ID__").innerHTML = html;

}

function sequence__MODULE_ID__(response)
{
var nodes = response.getElementsByTagName("TSeq");
var html="<div><dl>";
for (var i = 0; i < nodes.length ; i++)
{
var c=nodes.item(i);
var TSeq_seqtype = dom1__MODULE_ID__(c,"TSeq_seqtype");
var TSeq_gi = dom1__MODULE_ID__(c,"TSeq_gi");
var TSeq_accver = dom1__MODULE_ID__(c,"TSeq_accver");
var TSeq_orgname = dom1__MODULE_ID__(c,"TSeq_orgname");
var TSeq_defline = dom1__MODULE_ID__(c,"TSeq_defline");
var TSeq_length = dom1__MODULE_ID__(c,"TSeq_length");

html+='<dt><a title=\"Show this Sequence\" href=\"http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db='+
TSeq_seqtype.getAttribute("value")+
'&amp;val='+dom2__MODULE_ID__(TSeq_gi)+
'\" target=\"seq'+dom2__MODULE_ID__(TSeq_gi)+
'\">'+dom2__MODULE_ID__(TSeq_defline)+'</a></dt>'+
'<dd><i>'+
dom2__MODULE_ID__(TSeq_accver)+
'</i>. <i>'+dom2__MODULE_ID__(TSeq_orgname)+'</i>. (length:'+dom2__MODULE_ID__(TSeq_length)+')</dd>';
}

html+="</dl></div>";


_gel("content__MODULE_ID__").innerHTML = html;
}


function dofetch__MODULE_ID__(response)
{
if (response == null ||
typeof(response) != "object" ||
response.firstChild == null)
{
_gel("content__MODULE_ID__").innerHTML = "<i>Invalid data for efetch</i>";
return;
}
if(prefs__MODULE_ID__.getString("db")=="pubmed")
{
pubmed__MODULE_ID__(response);
}
else
{
sequence__MODULE_ID__(response);
}
}

function doesearch__MODULE_ID__(response)
{

if (response == null ||
typeof(response) != "object" ||
response.firstChild == null)
{
_gel("content__MODULE_ID__").innerHTML = "<i>Invalid data for search</i>";
return;
}
var nodes = response.getElementsByTagName("QueryKey");
if(nodes==null || nodes.length!=1)
{
_gel("content__MODULE_ID__").innerHTML = "<i>Error with QueryKey</i>";
return;
}
var QueryKey=nodes.item(0).firstChild.nodeValue;
nodes = response.getElementsByTagName("WebEnv");
if(nodes==null || nodes.length!=1)
{
_gel("content__MODULE_ID__").innerHTML = "<i>Error with WebEnv</i>";
return;
}
var WebEnv=nodes.item(0).firstChild.nodeValue;
var url= "http://www.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db="+
prefs__MODULE_ID__.getString("db")+
"&WebEnv="+escape(WebEnv)+
"&query_key="+escape(QueryKey)+
"&tool=gadget4ncbi"+
"&retmode=xml"+
"&usehistory=y"+
"&retmax="+prefs__MODULE_ID__.getString("retmax");

if(prefs__MODULE_ID__.getString("db")!="pubmed")
{
url+="&rettype=fasta";
}

_IG_FetchXmlContent(url,dofetch__MODULE_ID__);
}

function dogadget__MODULE_ID__()
{
var url= "http://www.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db="+
prefs__MODULE_ID__.getString("db")+
"&term="+escape(prefs__MODULE_ID__.getString("term"))+
"&tool=gadget4ncbi"+
"&retmode=xml"+
"&usehistory=y"+
"&retmax="+prefs__MODULE_ID__.getString("retmax");
_IG_FetchXmlContent(url,doesearch__MODULE_ID__);
}

_IG_RegisterOnloadHandler(dogadget__MODULE_ID__);

</script>
]]></Content>
</Module>