underlays/javascript/ikiwiki.js

   1 // ikiwiki's javascript utility function library
   2
   3 var hooks;
   4
   5 // Run onload as soon as the DOM is ready, if possible.
   6 // gecko, opera 9
   7 if (document.addEventListener) {
   8         document.addEventListener("DOMContentLoaded", run_hooks_onload, false);
   9 }
  10 // other browsers
  11 window.onload = run_hooks_onload;
  12
  13 function run_hooks_onload() {
  14         // avoid firing twice
  15         if (arguments.callee.done)
  16                 return;
  17         arguments.callee.done = true;
  18
  19         run_hooks("onload");
  20 }
  21
  22 function run_hooks(name) {
  23         if (typeof(hooks) != "undefined") {
  24                 for (var i = 0; i < hooks.length; i++) {
  25                         if (hooks[i].name == name) {
  26                                 hooks[i].call();
  27                         }
  28                 }
  29         }
  30 }
  31
  32 function hook(name, call) {
  33         if (typeof(hooks) == "undefined")
  34                 hooks = new Array;
  35         hooks.push({name: name, call: call});
  36 }
  37
  38 function getElementsByClass(cls, node, tag) {
  39         if (document.getElementsByClass)
  40                 return document.getElementsByClass(cls, node, tag);
  41         if (! node) node = document;
  42         if (! tag) tag = '*';
  43         var ret = new Array();
  44         var pattern = new RegExp("(^|\\s)"+cls+"(\\s|$)");
  45         var els = node.getElementsByTagName(tag);
  46         for (i = 0; i < els.length; i++) {
  47                 if ( pattern.test(els[i].className) ) {
  48                         ret.push(els[i]);
  49                 }
  50         }
  51         return ret;
  52 }