tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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books.js (2426B)

      1 // An inefficient, but effective bubble sort
      2 function sort(collection, key) {
      3  var i, j;
      4  var count = collection.length;
      5  var parent, child;
      6 
      7  for (i = count - 1; i >= 0; i--) {
      8    for (j = 1; j <= i; j++) {
      9      if (collection[j - 1][key] > collection[j][key]) {
     10        // Move the item both in the local array and
     11        // in the tree
     12        child = collection[j];
     13        parent = child.parentNode;
     14 
     15        collection[j] = collection[j - 1];
     16        collection[j - 1] = child;
     17 
     18        parent.removeChild(child);
     19        parent.insertBefore(child, collection[j]);
     20      }
     21    }
     22  }
     23 }
     24 
     25 // Set user properties on the nodes in the collection
     26 // based on information found in its children. For example,
     27 // make a property "Author" based on the content of the
     28 // "Author" element found in the childNode list of the node.
     29 // This makes later sorting more efficient
     30 function collectInfo(nodes, propNames) {
     31  var i, j, k;
     32  var ncount = nodes.length;
     33  var pcount = propNames.length;
     34 
     35  for (i = 0; i < ncount; i++) {
     36    var node = nodes[i];
     37    var childNodes = node.childNodes;
     38    var ccount = childNodes.length;
     39 
     40    for (j = 0; j < ccount; j++) {
     41      var child = childNodes[j];
     42 
     43      if (child.nodeType == Node.ELEMENT_NODE) {
     44        var tagName = child.tagName;
     45 
     46        for (k = 0; k < pcount; k++) {
     47          var prop = propNames[k];
     48          if (prop == tagName) {
     49            node[prop] = child.firstChild.data;
     50          }
     51        }
     52      }
     53    }
     54  }
     55 }
     56 
     57 var enabled = true;
     58 function toggleStyleSheet() {
     59  if (enabled) {
     60    document.styleSheets[2].disabled = true;
     61  } else {
     62    document.styleSheets[2].disabled = false;
     63  }
     64 
     65  enabled = !enabled;
     66 }
     67 
     68 // XXX This is a workaround for a bug where
     69 // changing the disabled state of a stylesheet can't
     70 // be done in an event handler. For now, we do it
     71 // in a zero-delay timeout.
     72 function initiateToggle() {
     73  setTimeout(toggleStyleSheet, 0);
     74 }
     75 
     76 var sortableProps = ["Author", "Title", "ISBN"];
     77 var books = [];
     78 
     79 // We uppercase the tagName as a workaround for a bug
     80 // that loses the original case of the tag.
     81 var bookset = document.getElementsByTagName("Book");
     82 
     83 // We need to create a "non-live" array to operate on. Since
     84 // we'll be moving things around in this array, we can't use
     85 // the read-only, live one returned by getElementsByTagName.
     86 for (var i = 0; i < bookset.length; i++) {
     87  books[i] = bookset[i];
     88 }
     89 
     90 collectInfo(books, sortableProps);