mochikit_v14/examples/view-source/view-source.js

   1 /*
   2
   3 Do syntax highlighting on every textarea inside of a "codeview" element
   4
   5 The content of textareas are URLs, not code!
   6
   7 */
   8 var viewSource = function () {
   9     var filename = location.hash;
  10     if (!filename) {
  11         filename = location.hash = "view-source/view-source.js";
  12     }
  13     filename = lstrip(filename, "#");
  14     var href = "../" + filename;
  15     replaceChildNodes("filename", "loading ", A({"href": href}, filename));
  16     replaceChildNodes("code", href);
  17     ext = filename.split(".").pop();
  18     var classes = {
  19         "html": "xml",
  20         "js": "javascript",
  21         "json": "javascript",
  22         "xml": "xml"
  23     };
  24     updateNodeAttributes("code", {"class": classes[ext]});
  25     syntaxHighlight(filename);
  26 };
  27
  28 var syntaxHighlight = function (filename) {
  29     var swapContents = function (dest, req) {
  30         replaceChildNodes(dest, req.responseText);
  31     };
  32
  33     var showParsing = function () {
  34         replaceChildNodes("filename",
  35             "parsing ",
  36             A({"href": "../" + filename}, filename)
  37         );
  38         return wait(0);
  39     };
  40
  41     var finishSyntaxHighlight = function () {
  42         dp.sh.HighlightAll("code", true, true, false);
  43         replaceChildNodes("filename", A({"href": "../" + filename}, filename));
  44         removeElementClass("codeview", "invisible");
  45     };
  46
  47     var elems = getElementsByTagAndClassName("textarea", null, "codeview");
  48     var dl = new Deferred();
  49     var deferredCount = 0;
  50     var checkDeferredList = function () {
  51         deferredCount -= 1;
  52         if (!deferredCount) {
  53             dl.callback();
  54         }
  55     };
  56     for (var i = 0; i < elems.length; i++) {
  57         var elem = elems[i];
  58         if (elem.name != "code") {
  59             continue;
  60         }
  61         var url = strip(scrapeText(elem))
  62         var d = doXHR(url).addCallback(
  63             partial(swapContents, elem)
  64         );
  65         deferredCount += 1;
  66         d.addCallback(checkDeferredList);
  67     }
  68     dl.addCallback(showParsing);
  69     dl.addCallback(finishSyntaxHighlight);
  70 };