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As described in the prototype wayf.jsp file the sites are available via the request attribute terms “sites”. The code segment below sets up a JavaScript associative array of icons (logos of size 16x16) and logos selected for best fit (according to the same rules that the Shibboleth EDS uses). Again language is ignored but could be trivially added.
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<% double bestRatio = Math.log(80.0/60.0); sites = (TreeSet<IdPSite>) request.getAttribute("sites"); %> <script type="text/javascript"> var theIcons =[]; var theLogos=[]; <% for (IdPSite site:sites) { if (null == site.getExtensions()) { continue; } List<XMLObject> list = site.getExtensions().getOrderedChildren(); UIInfo info=null; for (XMLObject o:list) { if (o instanceof UIInfo) { info = (UIInfo) o; break; } } if (info == null) { continue;} if (null == info.getLogos() || 0 == info.getLogos().size()) { continue;} String logoUrl = null; String iconUrl = null; double curRatio = 0; for (Logo logo : info.getLogos()) { if (logo.getHeight() <= 16 && logo.getWidth() <= 16) { iconUrl = logo.getURL(); continue; } if (logoUrl == null) { logoUrl = logo.getURL(); curRatio = Math.log(logo.getWidth()/logo.getHeight()); continue; } double ratio = Math.log(logo.getWidth()/logo.getHeight()); double him = Math.abs(bestRatio - curRatio); double me = Math.abs(bestRatio - curRatio); if (him > me) { logoUrl = logo.getURL(); curRatio = ratio; } } if (logoUrl != null) { %> theLogos['<%=site.getName()%>']='<%=logoUrl%>'; <% } if (iconUrl != null) { %> theIcons['<%=site.getName()%>']='<%=iconUrl%>'; <% } } %> </script> |
Accessing other information
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