// Semantic Radar / JS - user script
// version 1.0 [2006-11-13]
// Copyright (c) 2006, Uldis Bojars
//
// Released under the GPL license
// http://www.gnu.org/copyleft/gpl.html
//
// --------------------------------------------------------------------
//
// This is a Greasemonkey user script.
//
// To install, you need Greasemonkey: http://greasemonkey.mozdev.org/
// Then restart Firefox and revisit this script.
// Under Tools, there will be a new menu item to "Install User Script".
// Accept the default configuration and install.
//
// To uninstall, go to Tools/Manage User Scripts,
// select "Hello World", and click Uninstall.
// ==UserScript==
// @name Semantic Radar / JS
// @namespace http://sioc-project.org
// @description Detects presence of Semantic Web data on web pages
// @include *
// ==/UserScript==
// TO-DO List
/*
* 1) Optimize code (avoid re-testing for content)
* 2) Salabot izskatu ieksh laacz.lv
2.5) Looks funny on http://dig.csail.mit.edu/breadcrumbs/blog/2
* 3) Use Web-safe colors
* 4) Add Help link / create web page for Radar
* ...
* ) Displays 'detected' when RDF other then SIOC/FOAF/DOAP is found
* ...
* n) Add icons images in-line (into code)
*/
function findResults() {
return document.getElementsByTagName("link");
}
function detectRDF(event) {
// Redirect to browsers
var redirect_s = 'http://sparql.captsolo.net/browser/browser.py?url=';
var redirect_f = 'http://xml.mfd-consult.dk/foaf/explorer/?foaf=';
var redirect_d = 'http://sparql.captsolo.net/browser/browser.py?url=';
// Regular expressions
var re_foaf = /FOAF/i ;
var re_sioc = /SIOC/i ;
var re_doap = /DOAP/i ;
// var query_1 = "//link[@type='application/rdf+xml']";
// var result = document.evaluate(query_1, content.document, null, XPathResult.ANY_TYPE, null);
// Making a mess of changes to support Opera
var items = findResults();
var buf = ""
var is_DOAP = false;
var is_SIOC = false;
var is_FOAF = false;
var just_RDF = false;
for (var i = 0; i < items.length; i++) {
thisNode = items[i];
if ( 'application/rdf+xml' == thisNode.type ) {
buf += thisNode.title + " : " + thisNode.href + "\n";
if ( thisNode.title.search( re_doap ) != -1 )
is_DOAP = true;
if ( thisNode.title.search( re_foaf ) != -1 )
is_FOAF = true;
if ( thisNode.title.search( re_sioc ) != -1 )
is_SIOC = true;
just_RDF = true;
}
}
// UB: Add SemRadar code to the page + added status testing
if ( is_DOAP || is_FOAF || is_SIOC || just_RDF ) {
initRadar();
var item = document.getElementById("x-sem-radar");
item.style.display = 'block';
}
// UB: Changed IDs of elements
// !!! Need to eliminate repeated testing for autodetect LINKS !!!
var item = document.getElementById("x-sem-sioc");
// !!! WHY do 'x-sem-*' get lost on some Google pages ??? !!!
if (item)
item.style.display = ( is_SIOC ? 'inline' : 'none' );
testSioc();
var item = document.getElementById("x-sem-foaf");
if (item)
item.style.display = ( is_FOAF ? 'inline' : 'none' );
testFoaf();
var item = document.getElementById("x-sem-doap");
if (item)
item.style.display = ( is_DOAP ? 'inline' : 'none' );
testDoap();
// UB: We won't be pinging or updating status bar
/* dispStatus();
var need_to_ping = is_DOAP || is_FOAF || is_SIOC || just_RDF;
var can_ping = semrad_prefs.getBoolPref("do_pings");
if ( checkExcluded( content.document.URL ) ) {
alert(" This location is excluded from pings ");
can_ping = false;
}
if (need_to_ping && can_ping) {
pingSemWeb( content.document.URL, 'http://sparql.captsolo.net/ping/');
pingSemWeb( content.document.URL );
} */
}
function initRadar() {
var x_rad_html = document.createElement("div");
x_rad_html.innerHTML = '<div xmlns:html="http://www.w3.org/1999/xhtml" id="x-sem-radar"'+
'style="background: #FFE25F; padding: .5em; display:none; ' +
'font:13px verdana,sans-serif;*font-size:small;*font:x-small; ">' + // Avoid hacks that set non-standard font sizes
'<table style="width: 100%;"><tr><td style="text-align: left;">' +
'Detected' +
'<span id="x-sem-foaf"> - <a href="">FOAF</a></span>' +
'<span id="x-sem-sioc"> - <a href="">SIOC</a></span>' +
'<span id="x-sem-doap"> - <a href="">DOAP</a></span>' +
'</td><td style="text-align: right;">' +
'(<a href="javascript:void(document.getElementById(\'x-sem-radar\').style.display = ' +
'(document.getElementById(\'x-sem-radar\').style.display==\'none\' ? \'block\' : ' +
' \'none\')) ">hide</a>) ' +
'<a href="javascript:void(document.getElementById(\'x-sem-foaf\').style.display = ' +
'(document.getElementById(\'x-sem-radar\').style.display==\'none\' ? \'block\' : ' +
' \'none\')) " title="hide"><img border="0" src="http://www.w3.org/RDF/icons/rdf_flyer.24" ' +
'alt="RDF Resource Description Framework Flyer Icon"></a>' +
'</td></tr></table></div>';
document.body.insertBefore( x_rad_html, document.body.firstChild) ;
}
function findData( what ) {
if ( !what )
alert("findData: parameter 'what' should be supplied !");
// var query_1 = "//link[@type='application/rdf+xml'";
// var query_2 = "]";
var items = findResults();
var re_what = new RegExp( what, "i" );
for (var i = 0; i < items.length; i++) {
item = items[i];
if ( ('application/rdf+xml' == item.type) && (item.title.search(re_what) != -1) ) {
return item.href;
}
}
return '';
}
// !!! Changed element IDs and assigning to their HREF instead of 'location'
// GoTo SIOC
function testSioc() {
var span = document.getElementById("x-sem-sioc");
if ( !span )
return;
var items = span.getElementsByTagName("a");
// Get the URL of SIOC data
var dataURL = findData('SIOC');
// Redirect to RDF validator
// var redirect = 'http://www.w3.org/RDF/Validator/ARPServlet?PARSE=Parse+URI%3A+&TRIPLES_AND_GRAPH=PRINT_TRIPLES&FORMAT=PNG_EMBED&URI=';
// Redirect to SIOC browser
var redirect = 'http://sparql.captsolo.net/browser/browser.py?url=';
for (var i = 0; i < items.length; i++) {
item = items[i];
item.href = redirect + escape( dataURL );
}
}
// GoTo FOAF
function testFoaf() {
var span = document.getElementById("x-sem-foaf");
if ( !span )
return;
var items = span.getElementsByTagName("a");
// Get the URL of FOAF data
var dataURL = findData('FOAF');
// Redirect to FOAF browser
var redirect = 'http://xml.mfd-consult.dk/foaf/explorer/?foaf=';
for (var i = 0; i < items.length; i++) {
item = items[i];
item.href = redirect + escape( dataURL );
}
}
// GoTo DOAP
function testDoap() {
var span = document.getElementById("x-sem-doap");
if ( !span )
return;
var items = span.getElementsByTagName("a");
// Get the URL of DOAP data
var dataURL = findData('DOAP');
// Redirect to SIOC browser (due to a lack of DOAP explorer)
// var redirect = 'http://www.w3.org/RDF/Validator/ARPServlet?PARSE=Parse+URI%3A+&TRIPLES_AND_GRAPH=PRINT_TRIPLES&FORMAT=PNG_EMBED&URI=';
var redirect = 'http://sparql.captsolo.net/browser/browser.py?url=';
for (var i = 0; i < items.length; i++) {
item = items[i];
item.href = redirect + escape( dataURL );
}
}
detectRDF();
