User:Mike Dillon/Scripts/imageLinksByNs.js

From Wikipedia, the free encyclopedia

If a message on your talk page led you here, please be wary of who left it. Code that you insert on this page could contain malicious content capable of compromising your account. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump. If this is a .js page, the code will be executed when previewing the page.
Note: After saving, you have to bypass your browser's cache to see the changes. In Internet Explorer and Firefox, hold down the Ctrl key and click the Refresh or Reload button. Opera users have to clear their caches through Tools→Preferences, see the instructions for Opera. Konqueror and Safari users can just click the Reload button. 
// Requires: [[User:Mike Dillon/Scripts/namespaces.js]]
// Requires: [[User:Mike Dillon/Scripts/easydom.js]]
 
//<pre><nowiki>
 
addOnloadHook(function () {
    var node = document.getElementById("filelinks");
    if (!node) return;
 
    // Find the first UL after the header with the id "filelinks"
    while (node = node.nextSibling) {
        if (node.tagName && node.tagName.match(/^[Uu][Ll]$/)) {
            break;
        }
    }
 
    // Couldn't find the node, so bail out
    if (!node) return;
 
    // Stash the parent and next sibling of the list for later
    var parent = node.parentNode;
    var nextSibling = node.nextSibling;
 
    // Remove list from parent to work offline
    parent.removeChild(node);
 
    // Hash to store per-namespace lists
    var namespaceLists = {};
 
    // Build up a list of links by namespace
    var fileLink;
    var fileLinks = node.getElementsByTagName("li");
    for (var i = 0; fileLink = fileLinks[i]; i++) {
        var ns = getNamespaceNumber(fileLink.firstChild.firstChild.data);
        if (!namespaceLists[ns]) {
            namespaceLists[ns] = new Array();
        }
        namespaceLists[ns].push(fileLink);
    }
 
    // Rebuild the new subdivided lists
    with (easydom) {
        var newList = ul();
        for (var ns in wgNamespaceNames) {
            var items = namespaceLists[ns];
            if (!items) continue;
 
            var nodeData = {};
            items.sort(function (a, b) {
                var aData = nodeData[a] ? nodeData[a] : a.firstChild.firstChild.data.toLowerCase();
                var bData = nodeData[b] ? nodeData[b] : b.firstChild.firstChild.data.toLowerCase();
                return aData > bData ? 1 : aData < bData ? -1 : 0;
            });
 
            var nsList = ul();
            for (var i in items) {
                nsList.appendChild(items[i]);
            }
 
            newList.appendChild(li(strong(wgNamespaceNames[ns]), nsList));
        }
    }
 
    // Put the new list back in the DOM in place of the original list
    if (nextSibling) {
        parent.insertBefore(newList, nextSibling);
    } else {
        parent.appendChild(newList);
    }
});
 
//</nowiki></pre>